I like the hcl peroxide process, I had some copper with gold in it and welded to steel by accident. I used the AP process to dissolve the iron and copper, leaving me with some gold in solution and some as solids. The AP drop with smb works great. Thanks for another trick for recovering gold
Awesome reaction Sreetips!!! Yes very impressive and spectacular!!! Thank you for always providing great content, information and education over the years!!
H2O2 is hydrogen peroxide, Muriatic acid is HCl in acid solution. H2O2 released O2 (oxygen bubbles) and metallic gold dissolves as HAuCl4 yellow solution. It crystallizes as a yellow solid, HAuCl4.3H2O, gold(III) is not metallic now, but a salt complex. There after he will reduce Au(III) to metallic gold with sulfur(IV) dioxide. SO2 )gas) gives 2 electrons to gold(III) and ends up as sulfate, thus been reduced to Au(0). Impurities will remain in solution. He just have to rinse Au(0) with H2O to separate impurities from metallic gold.
@@vperez4796 Yes, but tetrachloroaurate(III) is yellow, and metallic gold is a dark precipitate. Therefore, the gold has to be present as a colorless species at the point that the solution turns clear but before metallic gold precipitates. The question is what that species is. I was speculating that contains gold(I), which is plausible as an intermediate oxidation state if it's gradually being reduced by the SO2.
the pink / red colour of the gold is from the light reflecting off the gold particles, way back when they used gold on stained glass to make shades of red coloured glass. a bit of gold history for everyone :)
Surface plasmons; light activates a metal surface, creating waves in the shared valence electrons. The waves act much like a diffraction grating, reflecting light of specific colors. For many years, Ruby glass was though to be gold dissolved into glass, but it turns out the gold exists as nano-scale spheres suspended in a clear glass matrix. This gives us the pinkish solution.
Pink/purple are the colors of gold. I accidentally added too much silver one time and the Inquarted gold fell apart into a powder. It had the most fantastic looking color layers in the liquid after settling completely. From blue to purple to red to pink. It was awesome and I’ve never been able to reproduce it. Long ago when I first started refining.
wow - super cool video showing how this is done , thanks to people like you who openly share and contribute positive and informative content like this - awesome work :) thank you!
The tital of you video is what drew me to your sot. I myself do gold recovery (from electronics) also from jewelry. After listening to you and hearing your take on the economy I subscribed. Nice to see there are others smart and not afraid to speak about the fact they are killing our economy with all the free money printing crap they are pulling. Thank you for the vision about gold refining as well .
This was really cool. I knew this was a way to purify gold, but this is the first video I’ve seen doing it. You’ve inspired me to give this method a try on my next batch of gold.
Absolutely spectacular! Very well presented, thank you Sir. It has been returned to its state at conception…well, pretty close to it anyway. It’d be neat to see a sample under high magnification.
Hey sreetips, thanks for another great video! I've got a question for ya. Could there be any adverse byproducts of applying this method to black sand containing very fine placer gold? As far as I know, black sand is mostly iron bearing rock (hematite and magntite mostly). Love your stuff, bud, keep up the great work.
wow this is along the lines of my question above. I see videos of alot of panners who discard so much "flour" gold just because it's time consuming to clean up.Hematite being magnetic would be easy enough and since sand is basically glass, chemical extraction should be doable. My thought with clay sediment is to dissolve/ suspend the gold, let the dust settle and pour the gold off the top.
@@MH-ql8ue around here both magnetite and hematite carry a bit of gold. I need a reagent to precipitate the gold out after I used the same process as the video.
Really great video, love watching your refines. Could this have been dropped with just standard SMB ? i know you mentioned it is a cleaner drop with the gas so just wondering. sorry for the newbie question, still learning the trade. many thanks Weremouse workshop
Sweet! I've never tried hydrogen peroxide and muriatic. I made SO2 gas by adding an excess of powdered sulfur to sulfuric acid and bringing it to a boil.
Yup, this is how it works in the modern monetary system. I don't like the term "printing money" because it was historically used to mean something different: it used to mean *government* literally printing banknotes and keeping them. The result was akin to taxation, just done differently. Today, money is created by taking loans. As long as interest rates are low (and they are stupidly low), lots of loans are made, and this increases money supply. But no evil "them" is actively doing it (or keeping it), the new money goes to whoever is willing to borrow.
Nixon should have never taken us off the Gold standard! This fiat “currency” (created by the PRIVATE Federal Reserve) will be the death of the Republic! END THE FED!
Bani din aur???🤔🙄🤣 Chiar credeti asa ceva???😂 Sa circule aur ca moneda de sschimb pt mancare???🤔😂 Pai, luai aurul si fugeai dracu, erai bogat!!☝️🤣 Ori e o mare vrajeala ordinara, ori oamenii erau atat de prosti, incat nu stiau ce inseamna aur sau ca au in mana monezi de aur!!☝️ Daca oamenii sunt acum atat de idioti, daramite atunci....era de inteles ca aveau aur in mana si ei se credeau saraci!!☝️🤣 Dar, secretul pe care nu vi.l spune nimeni, este ca; voi sunteti aurul Planetei!!☝️Voi produceti aur pana muriti!!☝️Ei, ucigasii de medici si farmacistii, scot aurul din voi, cu diferite substante chimice sub forma de pastile, ca sa fiti bolnavi sau sa muriti!!☝️Aurul este Viata!!☝️ Fara Aur in organism esti mort!!☝️
He had no choice. If he didn’t do it then all of our gold (currently 8000 tons) would have left the country. After WWII we made everything and the world paid us for it. But they paid in gold. Our reserves soared to 22,000 tons. If they tried to buy our goods with their currency they would be left empty handed. But as we began to spend more than we took in back in the 50s and 60s our gold reserves tumbled. Foreigners noticed this and wanted gold instead of dollars. They showed up with billions in paper dollars and demanded gold. We had a place open that allowed that. But they closed that window in 1971 when the president, who realized that all of America’s gold would be gone in very short order, so that the currency could no longer be exchanged for gold. No one batted an eye. And that is when it all started. Printing money without restriction. Our fiat system will fail with 100% certainty. Not what I want to see happen. It’s bad for everyone. And the public don’t realize this nor do they care. Try explaining it and you’ll lose their attention very quickly.
Hydrogen peroxide 3% in Denmark costs around 3,5 dollar per 250 ml And yeah.. nitric acid and all kinds of nitric salts are banned for private use by our terror law. And yeah.. sulfuric can’t be bought over 30%. I’m just ranting 😎 nice video sreetips 👍
It really gives me hope to be able to replicate a similar process by watching this. DG hydrogen peroxide 3% is in great abundance to me. I like your style of cutting costs using consumer grade chemicals. Also, no wedding rings were harmed in the filming of this process!
@@bormisha this isn't the type of chemistry to be bothered with high purity expensive reagent. You gotta know when it's important to spend money on the good stuff
@@jacobkudrowich This statement is applicable to all areas of life as well! I struggle with this. I keep buying the nicest or top 10 percent of whatever i am interested in ... When the reality is that i could be just as satisfied and save much more money by buying a much cheaper product.... It is a hard lesson to learn.
Wow amazing reaction. Ive collected a good amount of gold flakes from electronic scrap and went ss far as buying the Nitric Acid = 66 % but chickened out on carrying through with the recovery
That's pretty cool. I assume this wouldn't work well if the gold wasn't pretty pure already with no silver mixed in but seems like a good method for secondary refining, especially since hydrogen peroxide is cheap and has no special hazmat requirements to ship up to 12%. One thing is it starts to break down much past the boiling point of water so you may have lost some that way.
@@sreetips Maybe inquart with copper instead of your usual silver. Or don't inquart at all and just dissolve the carat gold directly. I'm thinking you'll get Silver Chloride precipitate, and you know how fun that is to filter. :-)
If you're looking for interesting new gold precipitants a try, try using sodium nitrite (recommended in Hoke's book for separating gold from PGMs).After filtering, remove as much HCl as you can from your solution and then add NaNO2 powder bit by bit until the solution decolorizes. It drops gold from solution but leaves all of the platinum group metals in solution-- worked a treat on some crude gold powder I had!
Wait a minute…I’ve always been told to remove any potassium nitrate, completely, or NO GOLD DROP will occur. Is sodium nitrate a replacement for nitric acid, too? I know that a two year old video with comments will probably go unanswered, but I thought I’d give it whirl. 😊
This is a bit troubling. Because I don't have access to nitric, I have used hot HCl + H2O2 to take non-precious metals into solution, with the filtered solids assumed to contain the gold. I was not aware gold was soluble this way. Obviously I have been losing gold into the waste stream. I learned something.
You may have dumped a colorless AuCl dispersion. I suggest you keep all metallic waste solutions. Let the it evaporate into a vented hood. Check if the acidity has decreased (use pH paper) you can use active metal filings, like metallic Zn. Metallic Zn limings shall oxidize to ZnCl2 and the Au(I) shall be reduced to metallic Au. Careful where you dump metallic waste, some organizations can get very nervous about that. I can safely argue that Zn(II) is part of our enzymes and also comes in vitamins supplements. Most living beings (vegetables and animals) use Zn(II) for their metabolism. IF YOU MUST DISPOSE of ZnCl2, I suggest you use sodium bicarbonate to precipitate Zn(HCO3)2, a white insoluble solid, Dry it out, keep it dry in a plastic container. Large amounts of metallic salts in the ground or rivers are not acceptable to most legislations, check out in your local library about state regulations. AuCl3 salts are reduced to Au nuggets by bacteria in the rivers and down the bottom of the seas.
HCl with H2O2 method is an environmentally friendly way to reduce Au(III) (aka AuCl3) to metallic gold. H2O2 is oxidized to O2 +H2O, the safest possible byproducts. In an alternative method where they use HClO, aka bleach, you precipitate copper (CuCl2) from electronic fingers as Cu(OH)2 , a greenish solid left in the filters. CAUTION; The moment you mix HCl with bleach, chlorine gas evolves (used in WWI as poison gas). You better stick to muriatic acid with hydrogen peroxide method. WARNING; Using H2S gas produce SO2 and H2SO4 in acidic conditions.
@@joestreet7036 Better don't store HNO3 at home. Some safety issues and also legal issues may apply depending on the State you live in. Be sure you read the legal regulations about HNO3 in your local library. Besides the regulations, I must warn you that concentrated HNO3 damage the human skin and possibly provoque burns and wounds. In addition hot HNO3 is a strong OXIDIZER, that is why you use it to dissolve metals. You MUST be a qualified technician to store and/or handle this acid. In addition any HOT strong acid like muriatic, is equally dangerous in to your health. Besides HCl is an oxidizer in the presence of Hydrogen Peroxide. Did any YoUTuve channel warned you about the above the precautions stated above?
Wow thank you so much for that. Fascinating to see the oxidation power of hydrogen peroxide taking over from nitric acid. Any idea of why not all of the gold powder dissolved? Maybe that portion was lower purity or contained a trace impurity level that prevented dissolution? Maybe it was coarser or microscopically had a low surface area form that prevented efficient dissolution? Peroxide can be tricky as it is so ready to react with anything, any impurities in the water or solids can result in a poor efficiency. Amazing watching the sulphur dioxide slowly taking effect and finally precipitating the gold. I would think we were seeing the SO2 react with residual peroxide in solution as SO2 is reducing/peroxide is oxidising. The inflection point was beautiful.
@@sreetips No worries - thanks as always for the reply. Thank you again for this demonstration of this reaction. Really enjoyed the precipitation of gold with the sulphur dioxide.
You do this so easily. I just tried to drop my gold out of AR and when I added SMD to my solution it turned dark black and then it turned right back to yellow color it was prior to SMD. Not sure what happened so any opinion would be well received. Thanks for everything you do.
You had excess nitric acid in your solution. The SMB dropped the gold, and the AR re-dissolved it. Use urea to denox the solution. Best if you do what Streetips always does: Start with the HCL and only add as much nitric as needed to dissolve the gold -- no more. That's why he doesn't need to add urea. Any tiny amount of excess nitric he added will be used up by the SMB. I guess as a alternative you could keep adding SMB to your solution until the nitric was used up re-dissolving your gold. It's just wasteful, but eventually the gold will drop out and stay.
@@guygordon2780 thank you sir for the great explanation and this makes sense to me. It looked so awesome when it turned that dark color then the wa wa wa moment. This will help me as I left it alone so now I can go back to it hopefully I can bring it back out of solution. Thank you again I really appreciate the help.
@@sharkozym Any time you get a black powder there's a good chance it contains precious metals. So don't dispose of it. Add it to your stock pot or dissolve it with AR. You absolutely need to use a drop of stannous chloride solution to test your solutions for precious metals before you add them to your waste bucket.
Every time I see your gold in solution I think back to what the lube oil samples from the main reduction gears looked like. Always called it clear and bright.
Clear and bright with zero BS&W! One destroyer that I was on, a messenger opened the wrong valve and allowed one of the settling tanks to gravity flow into the main sump on the reduction gears. It ruined the journals on the turbines. Had a civilian tech come to the ship in Naples. I remember that the LP turbine rotor journals looked like rusty pipes! He rigged an air motor to the turbine rotor and a dummy bearing and actually cut the journals and fitted new bearings. That was aft engine room. It got us home from across the pond.
@@sreetips We wiped out the aft bearing on our low pressure turbine in #2 engine room (DDG 12). They stopped and locked that shaft and reworked the bearing with a razor blade until clearances were in spec. That bearing was still running cool after a trip from American Samoa to Pearl Harbor and back to San Diego. I really miss the steam plants. MM3, USS Robison, DDG-12.
Witchcraft!! You're an Alchemist! LOL, precipitation always fascinates me, thank you really enjoyed this and your excellent narration that goes with it. Having had to wear gloves in my work what I use to do to help with the sweating is cut small holes in the backs of the gloves. Of course I didn't work with the acids that you do too. Thought I would mention it. Thanks again, very fascinating.
Props on Another awesome video! I was curious if silver could be refined in the same way? Or what would be the process used to drop the silver out of hcl or H2SO4 AP? Nitric acid is rather hard to get
That's really cool. I am wondering where you got the gold powder. I have some pay dirt that probably has some ultra fine powder in it, looks next to impossible to seperate.
It would be interesting to see an assay of the material going into the process, and then again at the end of the process to see the degree of refining taking place.
Mr sreetips I have a question in earlier videos you mentioned that platinum group metals tend to follow gold in smb so recently I tried ferrous sulphate to drop the gold because it's said to drop only the gold and it worked beautifully and no nasty smells so my question is why don't you use it regularly also any benefits to not
Ferrous sulfate brings down the gold, all the gold, and nothing but the gold. SMB it easier, and faster but will tend to bring down traces of PGMs if present. Each has benefits and drawbacks
Brilliant Mr Sreetips......A little tip for you, when working in labs with reagents always hold the bottle with the label in the palm of your hand, then if someone forgets to rinse it none of use get contaminated....all the best mate and thanks.
Would you recommend the copper sulfate electrolysis method for electronics parts melted into a single block of mixed metals? I'm looking for the most efficient way of removing base metal from electronics, and since copper is the highest percentage in most parts, I'm thinking electrolysis for the first step, which should leave precious metal-enriched anode mud.
I’d say acid/peroxide with an air bubbler tube. It will dissolve the copper substrate and release the gold foils for recovery. Might take a while, but the bubbler does all the work for you.
I am rewatching this and got to the part where you mention the ceramic chipping off the stirrer/hot plate. Could you use a plate of tempered glass between the hot plate and beaker/flask to protect the equipment while still properly transferring the heat?
is any one method better than an other? I watched one the other day where you made an acid, had to bring up the ph, ran out, had to make more... ive seen lots of SMB granule videos, personally, I like watching the SO2 gas precip myself.. is anyone better than the other? is one just cheaper therefore preferred?
Adding powdered SMB straight in is the easiest and most convenient. Ferrous sulfate is good if other metals such as platinum are in with the gold because ferrous sulfate will precipitate the gold, all the gold and nothing but the gold. But it bulky and cumbersome to set up. SO2 gas is supposed to be superior to all other methods but it’s a huge pain to set up the gas generator. Oxalic acid is a “polishing step” and the gold must be high purity to begin with. And it’s a pain because the of the pH adjustment and having both solution boiling for a successful precipitation. I like SMB because it’s simple and easy.
Love it. The commentary on inflation. Still and so much more relevant today. We’re near a banking collapse across the country, a liquidity shortage and a global reset.
I just want to thank you for this video, I live in a country where acids are not easy to come by, in particular nitric acid, even nitric salts are not easily available for the public to buy to make poor man's aqua regia. So I used this method to dissolve gold foils from pins after I had dissolved base metals. It was my first e waste refining attempt. I am just waiting for the shops to reopen so I can go get some smb to drop the gold from solution.
Would you be willing to tell the ingredients? And I use electrolysis with non magnetic stainless steel as the sacrifice anode. Works good but you have to geek your eye it very closely, because otherwise other metals will get in the mix, in this case its copper, nickle, aluminum platted with gold and silver. You just need a 12 volt power supply with the built in serge protector I started using salt and house hold distilled vingar but my mixture tended to turn brown, then I used baking soda and vinegar, I have not refined one bit of it yet because the acid is expensive and we only shop Amazon.
Hey steetips 😊 love your videos ♥️ but I got 2 questions : Can you use 19% peroxide instead of the 3% ? and can you add the smb to the solution directly instead of the gas method? Best regards 😊😉
I'm glad you did this video when you research this there isn't a lot of good info on the reaction now here's another interesting fact there's alot of videos showing using costic soda to remove Solder mask to expose more gold well this past week I did just that on about 80 flip phone circuit boards had them on low heat about an hour when I rinsed and started cleaning I noticed about 10 percent of the round gold circles under keys had faded and some were gone I don't know if it was simply eroded away and now was in particle form or had gone into solution because I dumped in toilet before looking since it is just drain cleaner you have any thoughts
When somethign dissolves into solution does the solutions volume go up? Or just the density? Things going into and out of Solutions is probably my favorite aspect of chemistry. Precipitation and recrystallizations specifically .. so cool
Hey Streetips... One thing I have a lot of his RAM sticks really old ones like DDR1 with the ceramic IC chips that are heavy on the gold from long before the $2,000 an ounce gold days that I haven't been having much success processing and I was wondering if maybe you'd like to do a video on how to effectively do that because it sure has me stymied
Fascinating content, I have a question perhaps someone might offer an opinion. I've got a zip-loc samitch bag full of gold leaf. Not much weight probably gram or so it's dirty from a mouse making a nest in a suitcase that had the gold leaf in it. Should I use mercury to amalgam the gold and retort to recover the mercury? Or is there a way to consolidate The Fluffy gold? I guess that's two questions. Thanks
Might not be gold at all. Take a piece, add 18k gold test acid and observe. If it dissolves, turns blue (or green) and the solids disappear then it’s probably Nordic gold - an alloy of copper that contains no gold. But if nothing happens then it might be actual gold.
Would this work well for the initial refining if you have computer scraps with high levels of base metals, or would this be better for a second/third refining?
It is possible to find SO2 gas in cylinders. I think it is used in the food packaging industry to sterilize. It may be prohibitively expensive, but the technique of bubbling the gas into the solution to precipitate Gold is a pretty good one.
@@sreetips I see... Did not know about the rental. I thought it would be purchased. It is toxic, though, and could be used to harm others, or could do so unintentionally as well. Not surprised that the sale is restricted.
Hi Sreetips. Are there other methods to precipitate the gold from the solution? Could you add SMB directly to the gold solution, like you would with a Aqua Regia, or do you have to use SO2 gas when you use peroxide as a solvent? Thanks Sreetips
Love your videos sir!! Can one expect to drop gold from the solution with only dissolved SMB or is the gas generator needed for the drop from this solution?
Thanks for the quick response. I will have to give this a shot. I have a several ounces of foils I have liberated from pins and other electronics that I’ve been stock piling until I acquire some nitric. However it seems using this method is already have the things required. Thanks for all the knowledge sir!
Great and learnt! Is this method safe to inhale, meaning no any poisoning gases fumed out during the process? How do you turn/ the original mixed gold (like jewelleries) to the powdery state before beginning the actual chemical separation process?
There is an episode of Monk, where someone dissolves gold and then makes ink with it, which is used to write a bunch of journals and hide the gold. I watched the episode like 20 years ago, and it still sticks in my mind.
Would this method work with silver or copper inquarted gold? Just thinking this method may be a little safer than aqua regia? Or will it only work with pure gold?
Sreetips, Do you know of this practice or any other practices such as aqua regia used to refine high grade gold concentrates? Current problem, 1 tonne of high grade concentrates, head grade 880 grams per tonne Sodium Cyanide is only giving about 300 gram per tonne recovery after ultra fine grinding, Roasting brings this recovery to around 600 grams per tonne recovery. Thinking Hydrogen Peroxide would burn off the sulfides and help recovery?
sir, is it possible to drop the gold directely out of ap. i did some pins and i think i do lose gold. today i there where no more foils, only goldcrystals forming on the little pins. i have no more tin to make a stannous. i dont want to lose it because it was a 2kg mid-high grade batch. maybe copper works but can i drop it directely out of the ap with just smb accessible? ps i only added 100ml h2o2/3% to 2lhcl/33% and still something went wrong
SO2 precipitation, isn't that what actually happens when you use SMB? Since SO2 loves to react with the Chlorine ions which causes the gold to fall out of solution, would Potassium metabisulphite (Campden tablets/powder) work as well as SMB? I use Potassium metsbisulphite in Meadmaking, (so i always have some around) its the SO2 released by the reaction with acids that sterilizes the must Maybe a little slower since the Potassium bond is a little stronger? Or would the Potassium make some unwanted byproduct/precipitate?
It’s the SO2 gas that’s produced by adding SMB directly to the chloroauric acid solution that precipitated the gold. But adding the powder and bubbling the gas produce different results, the gas bubble being superior. I’ve never tried postassium metabisulfite not sure if that will work or not
When you pour off into the temp waste container do you ever boil off the water? I would think that it could save space as you wouldn’t need as many different containers
@@sreetips I wonder if trying under a vacuum would cause it to boil off faster and more efficient. Downside is you would have to tie up equipment while you do it
I have no clue about chemistry but this is one of the most fascinating channels on here, I cant stop watching. Keep it going good sir.
The colour change on adding the SO2 gas was cool, Thank you for sharing your experience and knowledge.
Hallelujah! Preach and teach what’s happening with the country brother!!! It helps others to understand.❤
You made my day. I absolutely love your channel.
Now that's what I call a *clean* reaction. Good Job Streetips.
I like the hcl peroxide process, I had some copper with gold in it and welded to steel by accident. I used the AP process to dissolve the iron and copper, leaving me with some gold in solution and some as solids. The AP drop with smb works great.
Thanks for another trick for recovering gold
Never tired of watching the refining process experiments. Thanks 👍
That is a really amazing reaction. To see that in real-time is unreal.
Awesome reaction Sreetips!!! Yes very impressive and spectacular!!! Thank you for always providing great content, information and education over the years!!
Sreetips thanks for posting this tonight, your channel is such a calming relief from what most of UA-cam has become. Always awesome content here!
Tha k for the videos iv just starting off .you video help out a lot thank you for all the advice
What are you useing for the testing to see if you got all the gold out
Stannous chloride: ua-cam.com/video/j3SlZphCjj4/v-deo.html
That was awesome! I really wasn't expecting a video on this that soon, thank you for what you do sir
The reaction with SO2 is really neat. Just amazing how the solution turns completely colourless, before going dark.
Could the colorless ion be some gold(I) species?
H2O2 is hydrogen peroxide, Muriatic acid is HCl in acid solution. H2O2 released O2 (oxygen bubbles) and metallic gold dissolves as HAuCl4 yellow solution. It crystallizes as a yellow solid, HAuCl4.3H2O, gold(III) is not metallic now, but a salt complex. There after he will reduce Au(III) to metallic gold with sulfur(IV) dioxide. SO2 )gas) gives 2 electrons to gold(III) and ends up as sulfate, thus been reduced to Au(0). Impurities will remain in solution. He just have to rinse Au(0) with H2O to separate impurities from metallic gold.
@@vperez4796 Yes, but tetrachloroaurate(III) is yellow, and metallic gold is a dark precipitate. Therefore, the gold has to be present as a colorless species at the point that the solution turns clear but before metallic gold precipitates. The question is what that species is.
I was speculating that contains gold(I), which is plausible as an intermediate oxidation state if it's gradually being reduced by the SO2.
the pink / red colour of the gold is from the light reflecting off the gold particles, way back when they used gold on stained glass to make shades of red coloured glass.
a bit of gold history for everyone :)
Surface plasmons; light activates a metal surface, creating waves in the shared valence electrons.
The waves act much like a diffraction grating, reflecting light of specific colors.
For many years, Ruby glass was though to be gold dissolved into glass, but it turns out the gold exists as nano-scale spheres suspended in a clear glass matrix.
This gives us the pinkish solution.
Pink/purple are the colors of gold. I accidentally added too much silver one time and the Inquarted gold fell apart into a powder. It had the most fantastic looking color layers in the liquid after settling completely. From blue to purple to red to pink. It was awesome and I’ve never been able to reproduce it. Long ago when I first started refining.
wow - super cool video showing how this is done , thanks to people like you who openly share and contribute positive and informative content like this - awesome work :) thank you!
Yes, but distrust of the channels that doesn't inform you of negative effects on you. If they only share with you the precautions to be taken.
Thanks,
May be I can improve in future video.
I'm three episodes behind but really cool to see the different chemicals you can use to do gold with
Thanks for explaining inflation perfectly. I have a $10,000,000,000,000 note from Zimbabwe as a reminder.
Another great, relaxing video to send me off to hit the rack... thanks for the show! Nice to learn about the H2O2 method!
The tital of you video is what drew me to your sot. I myself do gold recovery (from electronics) also from jewelry. After listening to you and hearing your take on the economy I subscribed. Nice to see there are others smart and not afraid to speak about the fact they are killing our economy with all the free money printing crap they are pulling. Thank you for the vision about gold refining as well .
The gold just arrived today and it’s beyond amazing! Thank you!
Excellent! Thank you!
This was really cool. I knew this was a way to purify gold, but this is the first video I’ve seen doing it.
You’ve inspired me to give this method a try on my next batch of gold.
No excess nitric to worry about
Absolutely spectacular! Very well presented, thank you Sir. It has been returned to its state at conception…well, pretty close to it anyway. It’d be neat to see a sample under high magnification.
Thumps up sir, another great video and i love it..i never seen this process before.. i always saying thanks for sharing your best idea..
Always a joy to get to see a video from you
Lovely reactions, that nice gold/yellow colour are the hydrogen peroxide dissolve is a thing of beauty.
Absolutely amazing video !! You are a outstanding teacher !! WOW I just learned a bunch !! Thank-you sir !!
Hola - always entertaining sree. Thanks for the video. I love the multiple refine jobs you do. Silver, gold etc..
Loved the inflation note lol..
Thank you sir for your precious time.
I always love watching your videos. Keep em coming. 😁
Hey sreetips, thanks for another great video! I've got a question for ya. Could there be any adverse byproducts of applying this method to black sand containing very fine placer gold? As far as I know, black sand is mostly iron bearing rock (hematite and magntite mostly). Love your stuff, bud, keep up the great work.
I’m not sure. I’ve only done this once (twice if you consider my current work).
wow this is along the lines of my question above. I see videos of alot of panners who discard so much "flour" gold just because it's time consuming to clean up.Hematite being magnetic would be easy enough and since sand is basically glass, chemical extraction should be doable. My thought with clay sediment is to dissolve/ suspend the gold, let the dust settle and pour the gold off the top.
@@MH-ql8ue around here both magnetite and hematite carry a bit of gold. I need a reagent to precipitate the gold out after I used the same process as the video.
17:00
Just curious but, wouldn't it take less peroxide if using 20% volume peroxide? And, maybe faster as well
Really great video, love watching your refines. Could this have been dropped with just standard SMB ? i know you mentioned it is a cleaner drop with the gas so just wondering. sorry for the newbie question, still learning the trade. many thanks Weremouse workshop
Yes, I could have just added SMB to the solution to drop the gold as usual.
@@sreetips thank you for your reply sir keep up the excellent work 👍
Thank you very much. Watching for years.
Sweet! I've never tried hydrogen peroxide and muriatic. I made SO2 gas by adding an excess of powdered sulfur to sulfuric acid and bringing it to a boil.
Every time a bank makes a loan, they are creating "money" out of thin air.
Yup, this is how it works in the modern monetary system. I don't like the term "printing money" because it was historically used to mean something different: it used to mean *government* literally printing banknotes and keeping them. The result was akin to taxation, just done differently.
Today, money is created by taking loans. As long as interest rates are low (and they are stupidly low), lots of loans are made, and this increases money supply. But no evil "them" is actively doing it (or keeping it), the new money goes to whoever is willing to borrow.
Lack of interest and understanding is what allows them to do it, unchallenged.
Nixon should have never taken us off the Gold standard! This fiat “currency” (created by the PRIVATE Federal Reserve) will be the death of the Republic! END THE FED!
Bani din aur???🤔🙄🤣 Chiar credeti asa ceva???😂 Sa circule aur ca moneda de sschimb pt mancare???🤔😂 Pai, luai aurul si fugeai dracu, erai bogat!!☝️🤣 Ori e o mare vrajeala ordinara, ori oamenii erau atat de prosti, incat nu stiau ce inseamna aur sau ca au in mana monezi de aur!!☝️ Daca oamenii sunt acum atat de idioti, daramite atunci....era de inteles ca aveau aur in mana si ei se credeau saraci!!☝️🤣 Dar, secretul pe care nu vi.l spune nimeni, este ca; voi sunteti aurul Planetei!!☝️Voi produceti aur pana muriti!!☝️Ei, ucigasii de medici si farmacistii, scot aurul din voi, cu diferite substante chimice sub forma de pastile, ca sa fiti bolnavi sau sa muriti!!☝️Aurul este Viata!!☝️ Fara Aur in organism esti mort!!☝️
He had no choice. If he didn’t do it then all of our gold (currently 8000 tons) would have left the country. After WWII we made everything and the world paid us for it. But they paid in gold. Our reserves soared to 22,000 tons. If they tried to buy our goods with their currency they would be left empty handed. But as we began to spend more than we took in back in the 50s and 60s our gold reserves tumbled. Foreigners noticed this and wanted gold instead of dollars. They showed up with billions in paper dollars and demanded gold. We had a place open that allowed that. But they closed that window in 1971 when the president, who realized that all of America’s gold would be gone in very short order, so that the currency could no longer be exchanged for gold. No one batted an eye. And that is when it all started. Printing money without restriction. Our fiat system will fail with 100% certainty. Not what I want to see happen. It’s bad for everyone. And the public don’t realize this nor do they care. Try explaining it and you’ll lose their attention very quickly.
By the way, thank you for your service ⚓️
Thank you!
Fascinating and such simple chemicals!
Damn, I love this channel. Great video!
Hydrogen peroxide 3% in Denmark costs around 3,5 dollar per 250 ml
And yeah.. nitric acid and all kinds of nitric salts are banned for private use by our terror law.
And yeah.. sulfuric can’t be bought over 30%.
I’m just ranting 😎 nice video sreetips 👍
They penalize everyone for the misdeeds of a few.
It really gives me hope to be able to replicate a similar process by watching this. DG hydrogen peroxide 3% is in great abundance to me. I like your style of cutting costs using consumer grade chemicals. Also, no wedding rings were harmed in the filming of this process!
Consumer grade chemicals might be less pure than reagent grade lab chemicals, but I suppose Sreetips knows what he's doing.
@@bormisha this isn't the type of chemistry to be bothered with high purity expensive reagent. You gotta know when it's important to spend money on the good stuff
@@jacobkudrowich This statement is applicable to all areas of life as well! I struggle with this.
I keep buying the nicest or top 10 percent of whatever i am interested in ... When the reality is that i could be just as satisfied and save much more money by buying a much cheaper product.... It is a hard lesson to learn.
Hey SREETIPS…thank you for your great teaching!!!!
Wow amazing reaction. Ive collected a good amount of gold flakes from electronic scrap and went ss far as buying the Nitric Acid = 66 % but chickened out on carrying through with the recovery
That's pretty cool. I assume this wouldn't work well if the gold wasn't pretty pure already with no silver mixed in but seems like a good method for secondary refining, especially since hydrogen peroxide is cheap and has no special hazmat requirements to ship up to 12%. One thing is it starts to break down much past the boiling point of water so you may have lost some that way.
I’ll give it a try on some inquarted gold to see what happens
@@sreetips Maybe inquart with copper instead of your usual silver. Or don't inquart at all and just dissolve the carat gold directly. I'm thinking you'll get Silver Chloride precipitate, and you know how fun that is to filter. :-)
@@sreetips Good morrning! Happy Easter weekend. How did the new experimemt go on the inquarted gold?
Thanks Streetips. Your the best.
Not sure which one you’re referring to. But so far each attempt has went well
It would take less if it.
If you're looking for interesting new gold precipitants a try, try using sodium nitrite (recommended in Hoke's book for separating gold from PGMs).After filtering, remove as much HCl as you can from your solution and then add NaNO2 powder bit by bit until the solution decolorizes. It drops gold from solution but leaves all of the platinum group metals in solution-- worked a treat on some crude gold powder I had!
Sounds like a cool reaction, would be cool to see him do this.
Sounds like a good one to use on a computer e-waste process, leaving all the palladium off the MLCCs and chip internals still in solution.
I’ll look it up, thank you
Wait a minute…I’ve always been told to remove any potassium nitrate, completely, or NO GOLD DROP will occur. Is sodium nitrate a replacement for nitric acid, too? I know that a two year old video with comments will probably go unanswered, but I thought I’d give it whirl. 😊
SO2 gas Precipitation is pure bliss. So gratifying cleanness.
Love watching your vids. Thanks for sharing!
This is a bit troubling. Because I don't have access to nitric, I have used hot HCl + H2O2 to take non-precious metals into solution, with the filtered solids assumed to contain the gold. I was not aware gold was soluble this way. Obviously I have been losing gold into the waste stream. I learned something.
You may have dumped a colorless AuCl dispersion. I suggest you keep all metallic waste solutions. Let the it evaporate into a vented hood. Check if the acidity has decreased (use pH paper) you can use active metal filings, like metallic Zn. Metallic Zn limings shall oxidize to ZnCl2 and the Au(I) shall be reduced to metallic Au. Careful where you dump metallic waste, some organizations can get very nervous about that. I can safely argue that Zn(II) is part of our enzymes and also comes in vitamins supplements. Most living beings (vegetables and animals) use Zn(II) for their metabolism. IF YOU MUST DISPOSE of ZnCl2, I suggest you use sodium bicarbonate to precipitate Zn(HCO3)2, a white insoluble solid, Dry it out, keep it dry in a plastic container. Large amounts of metallic salts in the ground or rivers are not acceptable to most legislations, check out in your local library about state regulations. AuCl3 salts are reduced to Au nuggets by bacteria in the rivers and down the bottom of the seas.
HCl with H2O2 method is an environmentally friendly way to reduce Au(III) (aka AuCl3) to metallic gold. H2O2 is oxidized to O2 +H2O, the safest possible byproducts. In an alternative method where they use HClO, aka bleach, you precipitate copper (CuCl2) from electronic fingers as Cu(OH)2 , a greenish solid left in the filters. CAUTION; The moment you mix HCl with bleach, chlorine gas evolves (used in WWI as poison gas). You better stick to muriatic acid with hydrogen peroxide method. WARNING; Using H2S gas produce SO2 and H2SO4 in acidic conditions.
Same here.i have dissolved base metal's but know now I still have gold in solution
@@joestreet7036 Better don't store HNO3 at home. Some safety issues and also legal issues may apply depending on the State you live in. Be sure you read the legal regulations about HNO3 in your local library. Besides the regulations, I must warn you that concentrated HNO3 damage the human skin and possibly provoque burns and wounds. In addition hot HNO3 is a strong OXIDIZER, that is why you use it to dissolve metals. You MUST be a qualified technician to store and/or handle this acid. In addition any HOT strong acid like muriatic, is equally dangerous in to your health. Besides HCl is an oxidizer in the presence of Hydrogen Peroxide. Did any YoUTuve channel warned you about the above the precautions stated above?
@@joestreet7036 A renowned character said: "The needs of the many outweigh the needs of the one". It is no joke.
Wow thank you so much for that. Fascinating to see the oxidation power of hydrogen peroxide taking over from nitric acid. Any idea of why not all of the gold powder dissolved? Maybe that portion was lower purity or contained a trace impurity level that prevented dissolution? Maybe it was coarser or microscopically had a low surface area form that prevented efficient dissolution? Peroxide can be tricky as it is so ready to react with anything, any impurities in the water or solids can result in a poor efficiency. Amazing watching the sulphur dioxide slowly taking effect and finally precipitating the gold. I would think we were seeing the SO2 react with residual peroxide in solution as SO2 is reducing/peroxide is oxidising. The inflection point was beautiful.
I could have got the last few gold pieces to go, but it was getting late and I was more interested in getting the video up for my subscribers.
@@sreetips No worries - thanks as always for the reply. Thank you again for this demonstration of this reaction. Really enjoyed the precipitation of gold with the sulphur dioxide.
I like your suttle hints to exchange paper for gold/silver.
They are the only two elements suitable to be used as money.
Good stuff, very interesting process indeed. Thanks for sharing.
You do this so easily. I just tried to drop my gold out of AR and when I added SMD to my solution it turned dark black and then it turned right back to yellow color it was prior to SMD. Not sure what happened so any opinion would be well received. Thanks for everything you do.
You had excess nitric acid in your solution. The SMB dropped the gold, and the AR re-dissolved it.
Use urea to denox the solution.
Best if you do what Streetips always does: Start with the HCL and only add as much nitric as needed to dissolve the gold -- no more. That's why he doesn't need to add urea. Any tiny amount of excess nitric he added will be used up by the SMB.
I guess as a alternative you could keep adding SMB to your solution until the nitric was used up re-dissolving your gold. It's just wasteful, but eventually the gold will drop out and stay.
@@guygordon2780 thank you sir for the great explanation and this makes sense to me. It looked so awesome when it turned that dark color then the wa wa wa moment. This will help me as I left it alone so now I can go back to it hopefully I can bring it back out of solution. Thank you again I really appreciate the help.
@@sharkozym Any time you get a black powder there's a good chance it contains precious metals. So don't dispose of it. Add it to your stock pot or dissolve it with AR. You absolutely need to use a drop of stannous chloride solution to test your solutions for precious metals before you add them to your waste bucket.
Every time I see your gold in solution I think back to what the lube oil samples from the main reduction gears looked like. Always called it clear and bright.
Clear and bright with zero BS&W! One destroyer that I was on, a messenger opened the wrong valve and allowed one of the settling tanks to gravity flow into the main sump on the reduction gears. It ruined the journals on the turbines. Had a civilian tech come to the ship in Naples. I remember that the LP turbine rotor journals looked like rusty pipes! He rigged an air motor to the turbine rotor and a dummy bearing and actually cut the journals and fitted new bearings. That was aft engine room. It got us home from across the pond.
@@sreetips We wiped out the aft bearing on our low pressure turbine in #2 engine room (DDG 12). They stopped and locked that shaft and reworked the bearing with a razor blade until clearances were in spec. That bearing was still running cool after a trip from American Samoa to Pearl Harbor and back to San Diego. I really miss the steam plants. MM3, USS Robison, DDG-12.
Witchcraft!! You're an Alchemist! LOL, precipitation always fascinates me, thank you really enjoyed this and your excellent narration that goes with it. Having had to wear gloves in my work what I use to do to help with the sweating is cut small holes in the backs of the gloves. Of course I didn't work with the acids that you do too. Thought I would mention it. Thanks again, very fascinating.
Props on Another awesome video! I was curious if silver could be refined in the same way? Or what would be the process used to drop the silver out of hcl or H2SO4 AP? Nitric acid is rather hard to get
Silver is cemented on clean copper. Then melted, poured into shot, then run through the electrolytic silver cell.
that was a cool reaction change. well done sreetips
I think the H202 boils quartz or sand making h20 with the ashes makes avcaustic acid or soda when h20 added to acid boils then microwaving ?
That's really cool. I am wondering where you got the gold powder. I have some pay dirt that probably has some ultra fine powder in it, looks next to impossible to seperate.
It would be interesting to see an assay of the material going into the process, and then again at the end of the process to see the degree of refining taking place.
Mr sreetips I have a question in earlier videos you mentioned that platinum group metals tend to follow gold in smb so recently I tried ferrous sulphate to drop the gold because it's said to drop only the gold and it worked beautifully and no nasty smells so my question is why don't you use it regularly also any benefits to not
Ferrous sulfate brings down the gold, all the gold, and nothing but the gold. SMB it easier, and faster but will tend to bring down traces of PGMs if present. Each has benefits and drawbacks
Very interesting I never saw it done that way Thanks for sharing
Enjoy every refining session, I find it amazing ea time !
Brilliant Mr Sreetips......A little tip for you, when working in labs with reagents always hold the bottle with the label in the palm of your hand, then if someone forgets to rinse it none of use get contaminated....all the best mate and thanks.
As always a most thorough and helpful video 💥💯💥
Would you recommend the copper sulfate electrolysis method for electronics parts melted into a single block of mixed metals?
I'm looking for the most efficient way of removing base metal from electronics, and since copper is the highest percentage in most parts, I'm thinking electrolysis for the first step, which should leave precious metal-enriched anode mud.
I’d say acid/peroxide with an air bubbler tube. It will dissolve the copper substrate and release the gold foils for recovery. Might take a while, but the bubbler does all the work for you.
I am rewatching this and got to the part where you mention the ceramic chipping off the stirrer/hot plate. Could you use a plate of tempered glass between the hot plate and beaker/flask to protect the equipment while still properly transferring the heat?
I don’t know, I’ve never tried that.
is any one method better than an other? I watched one the other day where you made an acid, had to bring up the ph, ran out, had to make more... ive seen lots of SMB granule videos, personally, I like watching the SO2 gas precip myself.. is anyone better than the other? is one just cheaper therefore preferred?
Adding powdered SMB straight in is the easiest and most convenient. Ferrous sulfate is good if other metals such as platinum are in with the gold because ferrous sulfate will precipitate the gold, all the gold and nothing but the gold. But it bulky and cumbersome to set up. SO2 gas is supposed to be superior to all other methods but it’s a huge pain to set up the gas generator. Oxalic acid is a “polishing step” and the gold must be high purity to begin with. And it’s a pain because the of the pH adjustment and having both solution boiling for a successful precipitation. I like SMB because it’s simple and easy.
Love it. The commentary on inflation. Still and so much more relevant today. We’re near a banking collapse across the country, a liquidity shortage and a global reset.
It’s not the banks, it’s the value of the money that’s collapsing as they print money to bail everybody out.
I just want to thank you for this video, I live in a country where acids are not easy to come by, in particular nitric acid, even nitric salts are not easily available for the public to buy to make poor man's aqua regia. So I used this method to dissolve gold foils from pins after I had dissolved base metals.
It was my first e waste refining attempt.
I am just waiting for the shops to reopen so I can go get some smb to drop the gold from solution.
Would you be willing to tell the ingredients? And I use electrolysis with non magnetic stainless steel as the sacrifice anode. Works good but you have to geek your eye it very closely, because otherwise other metals will get in the mix, in this case its copper, nickle, aluminum platted with gold and silver. You just need a 12 volt power supply with the built in serge protector I started using salt and house hold distilled vingar but my mixture tended to turn brown, then I used baking soda and vinegar, I have not refined one bit of it yet because the acid is expensive and we only shop Amazon.
That was fun! Looks like a spice! Keep the videos coming!
Hey steetips 😊 love your videos ♥️ but I got 2 questions : Can you use 19% peroxide instead of the 3% ? and can you add the smb to the solution directly instead of the gas method?
Best regards 😊😉
19% will work much faster, less waste. SMB can be added directly. I do it all the time.
I really enjoyed the time lapses
I'm glad you did this video when you research this there isn't a lot of good info on the reaction now here's another interesting fact there's alot of videos showing using costic soda to remove Solder mask to expose more gold well this past week I did just that on about 80 flip phone circuit boards had them on low heat about an hour when I rinsed and started cleaning I noticed about 10 percent of the round gold circles under keys had faded and some were gone I don't know if it was simply eroded away and now was in particle form or had gone into solution because I dumped in toilet before looking since it is just drain cleaner you have any thoughts
I’ve never used lye to dissolve solder mask. No experience with that.
When somethign dissolves into solution does the solutions volume go up? Or just the density? Things going into and out of Solutions is probably my favorite aspect of chemistry. Precipitation and recrystallizations specifically .. so cool
The density increases for the exact same volume. I demo that in this video: ua-cam.com/video/zDfujDqEPMo/v-deo.html
@@sreetips thank you so much! Watching it now
Hey Streetips...
One thing I have a lot of his RAM sticks really old ones like DDR1 with the ceramic IC chips that are heavy on the gold from long before the $2,000 an ounce gold days that I haven't been having much success processing and I was wondering if maybe you'd like to do a video on how to effectively do that because it sure has me stymied
Fascinating content, I have a question perhaps someone might offer an opinion. I've got a zip-loc samitch bag full of gold leaf. Not much weight probably gram or so it's dirty from a mouse making a nest in a suitcase that had the gold leaf in it. Should I use mercury to amalgam the gold and retort to recover the mercury? Or is there a way to consolidate The Fluffy gold? I guess that's two questions. Thanks
Might not be gold at all. Take a piece, add 18k gold test acid and observe. If it dissolves, turns blue (or green) and the solids disappear then it’s probably Nordic gold - an alloy of copper that contains no gold. But if nothing happens then it might be actual gold.
Outstanding job
Would this work well for the initial refining if you have computer scraps with high levels of base metals, or would this be better for a second/third refining?
It would probably work well for refining the gold foils AFTER the gold foils have been recovered. Not sure though because I’ve never done it.
@@sreetips thanks, ill definitely give it a try and see what kind of results i get
It is possible to find SO2 gas in cylinders. I think it is used in the food packaging industry to sterilize. It may be prohibitively expensive, but the technique of bubbling the gas into the solution to precipitate Gold is a pretty good one.
It is sold in cylinders. But the gas company won’t sell it to just anybody. Plus the bottle is rented at about a dollar a day.
@@sreetips I see... Did not know about the rental. I thought it would be purchased. It is toxic, though, and could be used to harm others, or could do so unintentionally as well. Not surprised that the sale is restricted.
Hi Sreetips. Are there other methods to precipitate the gold from the solution? Could you add SMB directly to the gold solution, like you would with a Aqua Regia, or do you have to use SO2 gas when you use peroxide as a solvent?
Thanks Sreetips
I can add the SMB right in, no need to gas
Love your videos.
17:19 I love the rapid color change during this reaction....
Thank you for sharing!
That crossover was most epic!!!
Love your videos sir!!
Can one expect to drop gold from the solution with only dissolved SMB or is the gas generator needed for the drop from this solution?
Thank you!
I could add the SMB directly. But bubbling the gas is the same except it’s much cleaner precipitation
Thanks for the quick response.
I will have to give this a shot. I have a several ounces of foils I have liberated from pins and other electronics that I’ve been stock piling until I acquire some nitric. However it seems using this method is already have the things required. Thanks for all the knowledge sir!
Great and learnt! Is this method safe to inhale, meaning no any poisoning gases fumed out during the process? How do you turn/ the original mixed gold (like jewelleries) to the powdery state before beginning the actual chemical separation process?
The karat gold jewelry is alloyed with silver and boiled in hot dilute nitric. After that the gold can be dissolved.
@@sreetips just watching yout video the process you mentioned on your answer!👍😊
Look at that beautiful, bright yellow gold sponge! Sreetips, your skills are the bee's knees!😅
Thank you!
Thank you for the video!
There is an episode of Monk, where someone dissolves gold and then makes ink with it, which is used to write a bunch of journals and hide the gold. I watched the episode like 20 years ago, and it still sticks in my mind.
That’s cool. Wonder if it really works
Would this method work with silver or copper inquarted gold?
Just thinking this method may be a little safer than aqua regia?
Or will it only work with pure gold?
No, the HCl would react with the silver and form silver chloride. Probably make a mess with copper also - but not sure because I’ve never tried it
Hydrogen Peroxide goes up 31 cents and sreetips goes on a minute long rant about inflation and U.S. monetary policy. Absolutely love it.
31% price increase due to inflation of the money supply is worth a good “rant.” I may include more examples - they’re everywhere.
@@sreetips when did we ever get a 31% increase in pay for risking our lives? Never.
@@sreetips Rant away. I am tired of everyone ripping us off.
AMAZING JOB RESPECT
Sreetips, Do you know of this practice or any other practices such as aqua regia used to refine high grade gold concentrates?
Current problem, 1 tonne of high grade concentrates, head grade 880 grams per tonne
Sodium Cyanide is only giving about 300 gram per tonne recovery after ultra fine grinding, Roasting brings this recovery to around 600 grams per tonne recovery.
Thinking Hydrogen Peroxide would burn off the sulfides and help recovery?
I’m not sure about that. I don’t have much experience at that level.
Q: if you wanted to do this to make gold electroplating would you use as is or would you need to neutralise or anything
I don’t know I’ve never done it before
I wonder how faster it would react with , say, 30% H202 and maybe also some more concentrated HCl???
I don’t know if this was asked by another viewer, is it possible to make gold crystals like you have done with silver?
Yes: ua-cam.com/video/zDfujDqEPMo/v-deo.html
Nice one mate.
Whats the percentage of ur hcl that you are using?
Thanks
Label says 31.45%
sir, is it possible to drop the gold directely out of ap. i did some pins and i think i do lose gold. today i there where no more foils, only goldcrystals forming on the little pins. i have no more tin to make a stannous. i dont want to lose it because it was a 2kg mid-high grade batch. maybe copper works but can i drop it directely out of the ap with just smb accessible? ps i only added 100ml h2o2/3% to 2lhcl/33% and still something went wrong
I think SMB will drop the gold from a/p solution. But I’ve never tried it
SO2 precipitation, isn't that what actually happens when you use SMB?
Since SO2 loves to react with the Chlorine ions which causes the gold to fall out of solution, would Potassium metabisulphite (Campden tablets/powder) work as well as SMB?
I use Potassium metsbisulphite in Meadmaking, (so i always have some around) its the SO2 released by the reaction with acids that sterilizes the must
Maybe a little slower since the Potassium bond is a little stronger?
Or would the Potassium make some unwanted byproduct/precipitate?
It’s the SO2 gas that’s produced by adding SMB directly to the chloroauric acid solution that precipitated the gold. But adding the powder and bubbling the gas produce different results, the gas bubble being superior. I’ve never tried postassium metabisulfite not sure if that will work or not
When you pour off into the temp waste container do you ever boil off the water? I would think that it could save space as you wouldn’t need as many different containers
I tried evaporating but it’s not very efficient.
@@sreetips I wonder if trying under a vacuum would cause it to boil off faster and more efficient. Downside is you would have to tie up equipment while you do it
Very impressive video ,Thanks Sir
Lovely tips about economy.
Would this work for refining my jewellers sweeps, and other mixed alloy gold/silver?
Maybe if you get it hot enough.