It would be cool to see a video explaining the cost to profit ratio. Like how much you spend on chemicals, electricity, and metals compared to the value of the finished product.
I believe it is negative. The scrap metal cost is fixed at scrap value. The refining costs are expensive. If you add up the two costs it is a big loss. Also, a percentage of the scrap material is lost during refining. The gold value in dollars per weight is the same regardless of purity. I don't think the cost in dollars is his mission. The silver from karat scrap is very profitable IMHO. 👍 The costs of equipment repairs, replacements, and upgrades and now replacements again, has been significant.
-That white gold in your 14k portion is Rh plated. -You could use the Au electroplated material to inquart. The Au is plated on brass, which is Ni and then Au electroplated. Just assume that all the electroplated weight is 'inquart.' You'd be adding in the same Cu and Zn that's part of your Au filled material. -That junk metal is 'brass' or 'Zn diecast', that is zincate immersion (Na2ZnO3) coated, Cu flashed, Cu plated, Ni flashed, then Au flashed. Zn is just as useful to inquart as Cu or Ag. It all comes out when you do your HNO3 boils. -The material at the bottom of your melt dish is likely stainless steel. -I'm surprised at how little slag you have floating on top. That'd be your Zn or maybe Pb oxides. Looks like they might have been rinsed out into the drain when you spatter cast your melt into the cooling water tank. -The activity series isn't going to predict reactivity with acid. If anything, the reaction you got would be from the amount of Cu and Zn in the inquarted gold. Whatever Zn you add to your process will pas all the way through to your final Fe waste stream and be discharged in any liquid supernate. -Jeez. I didn't even consider Sn. -That white sediment on the bottom of the beaker, after the HCl boil, is your PbSO4. -Double, triple or even quadruple up on your filter paper for the Buchner funnel. In the old days, we'd use an asbestos fiber filter mat. I'd think you could use an activated carbon layer on top of the filter papers to help you get your clear solution. Of course, you'd need to add the carbon to your filter paper stash for later metal recovery. Yes, the filtration step will be slow, but less sensitive to high pressure vacuum. That IS nice Au! Long road to well done!
Mr. Foote. Thank you for the lesson of the day. You answered my ?’s and I’m sure some of SREETIPS’ as well. Keep posting here please. I’ll be watching for my next lesson sir. 😊
49:17 "It's getting late. I'm tired. This is when mistakes happen." This quote should be noted as it is knownledge to live by. Not only pertaining to gold refining but just in general. Stay safe everyone!
Twenty years of oil field machining with many late nights on a big lathe because everyone is waiting on ya! I’m surprised I’m not dead. Thanks for sharing and I did learn something.
I did twenty years in the Navy. I remember waiting on the MR (machinery repairman) to cut new wearing rings for one of the fresh water pumps on the distilling plant. We had no water to take showers while underway until he got them rings cut. Them the whole ship was waiting on us to reassemble the pump and get the evaps back up and running so they could wash up. But that’s ok, I work better under pressure.
Beautifully done. Stepping into something new, having it act in a very unexpected way, and you made the great save. Thanks for sharing. Steady wins the race.
There is nothing... and I mean NOTHING.. like the feeling of PURE GOLD.. in the palm of your hand. Always love hearing you say that. Beautiful gold bar and great pour lines. Thanks for uploading.
Thank yoy sir again. This was very informative as initially I was like wow that’s really smart. Until I saw the results now I know not worth the hassle. Thank you.
Excellent video once again thank you 😊 the struggle is real with the filtering process!!! I play with Escrap only because my feed stock is basically Free !!! The amount of time refining this material is insane but fun
I love the chemistry of every one of your refineries. I read, liked all your comments. I agree with everything you mentioned. Keep up the good work & keep putting out this content. I've learned a lot from you. Thank you!
I love to see the honest results of experiments like this. The bulk of the brass is copper, which should be no problem when inquarting, but that 15% zinc and the lead tin soldier really changed everything. Awesome video Sreetips. Its cool to see you experimenting and showing why its better to stick with a sterling silver inquartation when possible. If not, use pure copper or pure silver.
Not only is the Zinc more reactive, but as it is removed early, it's absence will leave channels through the remaining mostly copper alloy. Those channels will add a lot of surface area, thus speeding up the remainder of the extraction. You might find yourself using this more often, to save time. Lets hope it doesn't add any problems. Of course, you could also inquart using a mixture of sterling silver and gold filled scrap.
I think he spent maybe up to 10 hours extra to recover 6 extra grams from the gold filled scrap. Combined with the extra headache, I think it's not worth using this method.
@@lazyman114 Trying something new always takes more time. Doesn't mean it's not worth trying. Best way to learn something new. The problem Steetips ran into is not inherent to this method. It's a problem whenever the inquarted gold is much less than 25%. At 25% you get a gold sponge.
I have watched so many of these videos now and I still find it fascinating. I am sure some time in the past person or group figured out how to do this in antiquity. That knowledge was lost and that is how the rumor of alchemy turning lead int gold came about.
I think this video perfectly illustrates the difference between how things work in theory and how they work in reality. I thought using gf scrap was a great idea, but I never would have thought you had the troubles with it that you did. Great video.
This gentleman sound's like a Airplane Captain I feel save to fly with. I am watching this for 3 days, it is really interesting. Thank you. Good bless America and it's service to the world.
I think he kinda had to with this round. He said during one of his recent platinum videos that Mrs. Sreetips wasnt happy with him getting behind due to the platinum stuff.
Don't know whether this might be useful but I used to have to extract settled sediments from the liquids, the problem was you couldn't Syphon off all of the liquid, so I got a wine bottle with a plastic screw top, cut off the bottom with a tile saw, then you could fill with the liquid and leave it, the sediments settled on the plastic cap right in the neck, so you could Syphon off almost all the liquid without disturbing the sediment, it's also how the painters extract pigment from water based paint out of brushes, it just flows out of the brush and falls to the bottom without circulation,
Appreciate the video! I know it’s kind of a taboo subject on UA-cam but I’m really interested in the financials behind buying scrap gold / finding the chemicals for the best prices / selling the refined gold for profit etc. Thanks again!
Great work as usual Sreetips. The zinc and copper will use a little more nitric acid than the silver would have because these metals both have a valence of 2 rather than the valence of 1 for silver. Interestingly, under some controlled reaction conditions, zinc will form nitrous oxide "laughing gas" instead of the brown nitrogen dioxide that usually forms.
Considering that a lot of colloidal gold went to your temporary waste container while cleaning the precipitated gold, the yield was really good. I believe it was so close to the theoretical yield because of the extra from the gold filled material, about 5 to 6 grams. Anyway, that's a messy alternative to be used when you have no silver/copper readily available, but it is surely not ideal.
Your most perfect bar yet, and at today's spot price just a bit over $7300. And it seems that the high-purity gold precipitate tends to clump together (so that less of it gets poured off with the waste solution) than the low-purity stuff earlier.
I see the benefits of using the gold filled material for inquarting. I wonder what the cost benefit is compared to silver. A higher gold yeald, but not much silver to recover. Still fun to watch.
I refine silver also. The 1st step is to dissolve it in hot dilute nitric. So I missed an opportunity to get some more silver dissolved. I have much sterling that needs to be dissolved. But I’ve also got a bunch that needs to be melted, granulized, and run through my silver cell. I’m way behind on everything.
Excellent video! Really proves the point that your silver enquartation approach works really well compared to using gold filled scrap. Still, in spite of the extra work you produced another stunning bar with a very good yield. Well done! 👍
I love to sit and watch your videos I learn so very much . Even though I don't do experiment such as yours . It's always good learn something new from a learn Ed person such as you .
Even in these difficult situations,...you produced an excellent yield and excellent content. Must be difficult to concentrate on the video-content side, while working on a stubborn process.
Ended up with a good looking bar! First drop the liquid was the same color skin turns when wearing gold filled jewelry! Have you thought about going to a greater gold percentage with the alloy to see if it prevents it from going colloidal?
@@sreetips the other thought would be to re-melt after the first couple of nitric acid baths when you are no longer getting a reaction and most of the zinc is gone. You would be left with mostly copper and some silver and it might keep it from breaking down into colloidal.
My idea for a cool bit of video, or video in itself, is showing how the lead in solution reacts to the sulphuric acid by adding a bit of lead or solder to what would be a gold refining process Obviously it would only be a proof of concept video and not actually include the use of gold in solution, but maybe some weighed out (gram or two) before and after lead/solder to a silver or copper solution? Just a thought. Thank you for the awesome videos.
You are welcome! Tremendous video of a tremendous effort with a tremendous result that I watched in tre instalments and which I give tre tumbs up--->👍👍👍
I enjoyed the longer video. This was a fun one to watch. I knew in the end. You were going to produce an amazing looking bar of pure .999 gold. I'm looking forward in you tackling the gold refining waste. This gold filled experiment throw a lot if junk into it im guessing. Fun stuff Sreetips.
Me and my wife recently discovered your channel and we have been bingewatching your content. It has a very strong ASMR video feel to it. Now we got talking about your accent and im thinking Boston, the wife is saying Vermont. How wrong are we?? Absolutely enjoying the video's!
Wow. Did not expect that much difference (powder instead of a sponge.) Looks like you could cut back on the amount of base metal when it contains zinc. I don't think you made a mistake trying this. You just need to tweak the process a bit, and it could well work out better than using just sterling silver.
I agree, though he uses sterling to refine both the gold and the silver. I figured it'd be easier to refine the GF than it would be to increase the karat yield. Would be nice if he tried again at some point.
Gold filled takes several days to get it done. I can refine gold to high purity in ten or twelve hours. Combining the two processes into one, like in this video, seems that it defaults to to longer of the two processes, time wise.
Been doing my revision. (You've got me doing my balanced equations again!!) Seems to me that the white clouding solid making that first filtering a nightmare was almost certainly Lead sulphate. Anyone agree? Sree mentioned that lead solder was likely present in the Gold Filled material. Honestly, this channel is reigniting my love of chemistry all over again! If I'm ever at a pub quiz, I'm definitely going to know what Muriatic Acid is more properly known as!! Thanks again for all your effort.
Very interesting to see you use the gold filled scrap this time and very interesting to hear the facts of "gold plated", I will never buy this now after learning this from you. Nice that the yield was close, I wonder how much gold is in the stockpot? Awesome video. 👍
36:39 You no need to waste hydrochloric acid for silver test. Use for it medium to high saturated solution of sodium chloride (cooking salt times cheaper than muriatic acid). And salt will not rise acidity of solution, but gives same precipitation result as acid. 36:50 That green cloud is copper dichloride (CuCl2) and possibly zinc tetrachlorocuprate (Zn[CuCl4]), both salts quite unstable(especially second) in nitric acid or it's salts solutions 43:44 Nasty ortostannic acid (or fine tin oxide, from G.F. material) clogging filters in minutes or go though it if not fine enough. Using filter "sandwich" will help alittle. Filter Sandwich from top to bottom: rude filter (cotton pad), semifine filter/filters(quick and/or medium flow class) and fine filter (slow flow class a.k.a. "blue tape"). To prevent forming tin oxide add citric acid as inhibitor (about 24 gram per 100 ml HNO3) and avoid to heat solution above 50°C. 53:46 forgot stannous chloride test
About that silver test, I'd say it is inconclusive, led chloride will also precipitate. The way to distinguish led and silver is to take a bit of that precipitate, (try to) dissolve it in ammonia and add some potassium iodide. Led chloride won't dissolve in ammonia and silver iodide will give a nice, bright yellow precipitate.
@@apveening Lead chloride precipitate only in concentrated solutions, in diluted solution it's redissolves. Solubility difference between lead and silver chlorides is significant: for PbCl2 is about 1gram per 100ml (at 25°C), and for AgCl is about 20micrograms per 100ml (or 0.2gram per tonne)
Hooyah Shipmate!!! I love your videos. You do great work. I have an idea, could you put your fume hood over a regular glass topped stove? Then you would have four burners at the ready and you wouldn’t need to keep replacing the single burner so often. Thank you.
Also a self cleaning oven gets like up to like 900 degrees. That might help instead of using your outside oven/ kiln. I hope not to be nosy, but after seeing your videos from years ago it seems like you are constantly trying to improve your processes. I’m mostly thinking of how I’m gonna make my refining work center. You motivate me!! If you can do it I can too.
I really enjoy these longer videos like this. I prefer a long video to multiple shorter ones I think. I’m guessing you won’t be enquarting with gold fill again anytime soon… ouch… still, pulled it off. Challenge complete. Lol… 👍💪💪
Today I am increasingly aggravated by my state legislative branch. Again, they have reached into my pocket and helped themselves to take money which does not belong to them. I am distraught to the very wickedness of their hands and I am resolved to halt this ongoing molestation of my very person. FU legislation!
Zinc is about a third less dense than silver, so every 1 gram of zinc you add takes up the volume of 1.47 grams of silver. So a larger fraction of the volume of the alloy is going to be base metals. With the same amount of gold stretched over a larger volume, the resulting gold particles will be smaller. So it's basically the same adding way too much silver, which would also end up giving you that annoying fine powder. At least, that's my reasoning. Density in alloys is probably not that simple. Somebody who knows more can correct me.
When you get the purple gold nanoparticles in suspension, I wonder if adding a small amount of SMB would act as a surfactant, and cause them to condense? I know that it can make particles of many atoms when it reacts with chloroauric, but I wonder if it can have the same effect on particles in suspension. Next time you get some 'purple gold' it might be worth putting some in your spot wells and trying different remedies like copperous, or even lye. If you can find an additive that efficiently condenses colloidal gold, it might open up other refining options.
Seems like no matter how you process GF scrap it's a pain the ass. If there was only a way to figure out how to streamline the extra time it takes it would be a great way to use up all that GF scrap you got stashed away.
would be nice if he tried again at some point. Was hoping it would streamline the GF process. Maybe he needs to add less GF and more karat due to the zinc?
Wow at the final dissolve in aqua regia, it seems the solution was so saturated with dissolved gold I think that's why it was having trouble dissolving more until you added more Hcl! You can tell when that auric chloride is that dark the yield is going to be crazy! Amazing video, and it was a dirty procedure, but as usual, you turned it into a win!
So glad to see a happy ending on this. It sounded like it wasn't going too well and I was afraid of what the actual yield was going to be, but in the end, it's a gorgeous bar and very little (temporary) loss of gold!
I think the expression is "Can you do it? Well, yes. Should you do it? Heck no!" Interesting reactions there. Would be interested to know what dropped out of the Blue Nitric residues - would guess a whole heap of copper!
Beautiful bar! Super interesting process this time. It looked like you were loosing quite a bit when the gold was in that finely divided state during the pouring off process. It’s really interesting the different states the gold goes through during the process. Any ideas for future inquarting, i.e different metals or just going to stick with sterling?
Awesome video love it. I would like to see you refine gold-plated material I think that would be cool to see starting weight vs refined weight, just a suggestion. Thanks again
@@NOFX0890 Gold plated scrap is not worth refining, probably even with a stripping cell. It might be profitable for a big refinery that could treat it as a secondary recovered material. Heap leaching might also be worthwhile if you have a few tons of the scrap - but that process is really nasty.
I’d have to say you did a great job considering how nasty the solution looked prior to the first filtration. I think I’d have to agree with your conclusion too. Only reason to inquart with gf is if you were desperate and really couldn’t get your hands on some silver or copper.
For every 108 g of silver you need 2 moles of hno3. 2 moles / 14 M is 1/7 of a liter of concentrated hno3, or 140 ml of concentrated hno3. For every 65 g in of zinc, it’s also 2 moles or 140 ml of hno3. Zinc will gas out with 22 liters of h2 gas for every 65 g of zinc. This is why zinc dissolution turns into a frothy mess.
Thanks for a different method something new I learnt about gold filled jewellery to gold plated. You have great patience. I reckon that would be very beneficial especially with gold. Well done 👍 A big problem I have is not all gold is marked. But I've come across 18 K with no marks. It must be jewellery that is home made perhaps??
Sometimes a jeweler will size a ring and cut out the karat stamp. The jeweler doesn’t care about being able to ID the metal that the ring is made of. Only about getting it to fit the customer properly. The jeweler will put 10k clasp on a 14k chain because it’s a more durable alloy than 14k - according to him (the jeweler).
I have seen gold from Thailand, although many decades ago, that was in the range of 18k to 20k and unmarked. Really soft jewelry however, not good for everyday wear.
is home refining profitable? aside from when you purchase for demonstration purposes & overpay... Also I was thinking Instead of just doing a straight nitric to pull out the base metals only, you could do it another way without having to inquart. Why not do aqua regia to put all metals in solution then precipitate/filter & do nitric pulls when it is a dried powder? I think it would do it better with fewer nitric boil pour offs... I could be wrong, I have as yet to do my first refine with all this e-waste from computers I found that I couldn't just rebuild & give away... Surprised that some of these old processors can go for quite a bit of cash... same as the ram & other hardware... almost like it was when it was cutting edge technology... lol..
You could put the karat gold directly into aqua regia without inquarting with silver. But two major problems would arise. 1) it makes a very dirty solution that looks like used motor oil. 2) any of the gold that contains much silver would passivate. The HCl in the AR would react with the silver and form a tough layer of silver chloride that would shield the gold from the acid. To remedy it must be removed before the gold will go into solution. Both problems are completely eliminated by inquarting with silver (or clean copper) and parting with hot dilute nitric boils BEFORE going to aqua regia. Plus, I refine silver and the first step is to dissolve it in hot dilute nitric acid. So why not use it to inquart? Like refining both metals at the same time.
113.08 i noticed that after your 2nd refining the gold became more solid or not as fine particulated as the 1st refining did, It poured out alot easier.
Comment on your torches Dude. Spark up a normal propane torch and look at the flame. Inner cone is about a 1/2” cone out, in the centre. Outer cone is a longer 2”-3” cone, just outside of the inner cone. The tip of this is the hottest part of your flame. Outer flame. Residual gases burning off. Look like your outer cone is tipping at the bottom of the dish with a massive load in the dish. Too far out causes carbon build up. Awesome video 0.3G Was there an estimate on the gold filled? 6g?
@@sreetips one day when your big and rich and want the cleanest flame - Pick Hydrogen. Super clean gas. People us is for clear and white enamaling. Melting the beads onto a metal base, by hydrogen flame. Amazingly clear. Which means 0% contamination from your flames.
Why can't you filter your gold waste liquid and add it back to the Aqua regia? Thanks for another very interesting video. I'm a finish carpenter and respect/enjoy all forms of precision videos. CEE Engineering and Sreetips are always a must watch for me.
I could do that, but that would add time to an already lengthy process. Plus, letting it build up in the waste container is like a little off-line savings account.
Sreetips, instead of using gold filled jewelry, maybe try zinc pennies. 125 grams of clean zinc for 50 cents. No springs, hardware or colloidal gold. Dean
$7411.00 as of today. I'm amazed how much I've learned from these vids. I found myself thinking "That color looks terrible" and what step came next. Why do you sometimes dry the gold on a hotplate before melting and other times just go straight to the melt?
Hi Screetips… could you please weight one of your gold liquids some time? I know it is an obvious thing but everyday people pick up a carton of milk and know how much it will weigh… just interesting to see a liquid of the same volume could weight three times heavier than “normal” ;)
I've wondered before if you could use pure copper to inquart instead of silver. This video almost answers that, but it sounds like the zinc is what caused most of the issues. At least in the amount it was. Still, interesting to see alternatives and the pros/cons.... mostly cons lol.
Great video and it seems like a real pain to process it this way. But at least it turned out a beautiful bar. Seemed to break the gold down a lot more than silver.
why not Throw it all in a crucible add borax iron potassium nitrate and lead oxide to oxidize away base metals use bone Ash to oxidize LED away precious metal button.. add half the weight of the button with previously refined gold melt together.. use AR filter silver cheaper and faster.
@@sreetips I don't do videos. But is easy pyro chemistry to remove base metals and recovered precious metal. Inquart button with more gold. Part precious metal button with aqua chemistry AR. Inquarting karat gold with previously refine gold instead of silver or copper is also faster.
_Video ends_ "Hol' up. That was over an hour? I don't even notice." Enrapturing. I don't think I'll ever get over the color of that chloroauric solution.
It would be cool to see a video explaining the cost to profit ratio. Like how much you spend on chemicals, electricity, and metals compared to the value of the finished product.
I believe it is negative. The scrap metal cost is fixed at scrap value. The refining costs are expensive. If you add up the two costs it is a big loss. Also, a percentage of the scrap material is lost during refining. The gold value in dollars per weight is the same regardless of purity. I don't think the cost in dollars is his mission. The silver from karat scrap is very profitable IMHO. 👍
The costs of equipment repairs, replacements, and upgrades and now replacements again, has been significant.
@@anthonyrstrawbridge Diamonds have no resale value. None.
He’s not doing it for profit. It’s a hobby so profit isn’t the primary mover.
@@Heymrk 👍👍👍♥️✌️
@@anthonyrstrawbridge And don't forget the UA-cam revenue.
-That white gold in your 14k portion is Rh plated.
-You could use the Au electroplated material to inquart. The Au is plated on brass, which is Ni and then Au electroplated. Just assume that all the electroplated weight is 'inquart.' You'd be adding in the same Cu and Zn that's part of your Au filled material.
-That junk metal is 'brass' or 'Zn diecast', that is zincate immersion (Na2ZnO3) coated, Cu flashed, Cu plated, Ni flashed, then Au flashed. Zn is just as useful to inquart as Cu or Ag. It all comes out when you do your HNO3 boils.
-The material at the bottom of your melt dish is likely stainless steel.
-I'm surprised at how little slag you have floating on top. That'd be your Zn or maybe Pb oxides. Looks like they might have been rinsed out into the drain when you spatter cast your melt into the cooling water tank.
-The activity series isn't going to predict reactivity with acid. If anything, the reaction you got would be from the amount of Cu and Zn in the inquarted gold. Whatever Zn you add to your process will pas all the way through to your final Fe waste stream and be discharged in any liquid supernate.
-Jeez. I didn't even consider Sn.
-That white sediment on the bottom of the beaker, after the HCl boil, is your PbSO4.
-Double, triple or even quadruple up on your filter paper for the Buchner funnel. In the old days, we'd use an asbestos fiber filter mat. I'd think you could use an activated carbon layer on top of the filter papers to help you get your clear solution. Of course, you'd need to add the carbon to your filter paper stash for later metal recovery.
Yes, the filtration step will be slow, but less sensitive to high pressure vacuum.
That IS nice Au!
Long road to well done!
Mr. Foote. Thank you for the lesson of the day. You answered my ?’s and I’m sure some of SREETIPS’ as well. Keep posting here please. I’ll be watching for my next lesson sir. 😊
49:17 "It's getting late. I'm tired. This is when mistakes happen." This quote should be noted as it is knownledge to live by. Not only pertaining to gold refining but just in general. Stay safe everyone!
You stay safe! I'll LIVE! Thank you!
Yup. Always quit if you get tired.
@@datbeast767 Nothing much would get done if I stop after getting tired. In my case, I get most productive when it's bedtime.
Interesting to see how different this went in comparison to using silver. another great vid!
Twenty years of oil field machining with many late nights on a big lathe because everyone is waiting on ya! I’m surprised I’m not dead.
Thanks for sharing and I did learn something.
I did twenty years in the Navy. I remember waiting on the MR (machinery repairman) to cut new wearing rings for one of the fresh water pumps on the distilling plant. We had no water to take showers while underway until he got them rings cut. Them the whole ship was waiting on us to reassemble the pump and get the evaps back up and running so they could wash up. But that’s ok, I work better under pressure.
If for nothing else, this was very interesting. To see a different inquartation with something different than silver. Thanks for the hard work.
That trick with dissolving the gold off the inside of the beaker was pretty cool.
Beautifully done. Stepping into something new, having it act in a very unexpected way, and you made the great save. Thanks for sharing. Steady wins the race.
There is nothing... and I mean NOTHING.. like the feeling of PURE GOLD.. in the palm of your hand.
Always love hearing you say that. Beautiful gold bar and great pour lines. Thanks for uploading.
Nice recovery Sreetips!....and the bar looked very uniform. A++++
Thank yoy sir again. This was very informative as initially I was like wow that’s really smart. Until I saw the results now I know not worth the hassle. Thank you.
80 Minutes of goodness on a Saturday morning. Thank you good Sir.
Excellent video once again thank you 😊 the struggle is real with the filtering process!!! I play with Escrap only because my feed stock is basically Free !!! The amount of time refining this material is insane but fun
Great video. It’s a lot more work this way. The gold bar is beautiful. Awesome job.
THis is the kind of thing they need to be teaching in chemistry classes, way more interesting to watch and see actual results.
tbh i think they try to teach this, ot least my teacher did, but i was too young to get it
I took a chemistry class in high school 50 years ago and got a “D” and never took another.
Your process is wonderful to watch and your voice is extremely soothing thank you for another excellent video
I love the chemistry of every one of your refineries. I read, liked all your comments. I agree with everything you mentioned. Keep up the good work & keep putting out this content. I've learned a lot from you. Thank you!
All these videos and still my favorite part is the melt table. Thanks Sreetips
I love to see the honest results of experiments like this. The bulk of the brass is copper, which should be no problem when inquarting, but that 15% zinc and the lead tin soldier really changed everything. Awesome video Sreetips. Its cool to see you experimenting and showing why its better to stick with a sterling silver inquartation when possible. If not, use pure copper or pure silver.
Although this didn't all go to plan, it was a great thing to watch, to see you think on you feet, and get a great result is a testament to you sir!
Not only is the Zinc more reactive, but as it is removed early, it's absence will leave channels through the remaining mostly copper alloy. Those channels will add a lot of surface area, thus speeding up the remainder of the extraction.
You might find yourself using this more often, to save time. Lets hope it doesn't add any problems. Of course, you could also inquart using a mixture of sterling silver and gold filled scrap.
Might be worth experimenting to see at what percent of zinc does the gold start to fall apart and form suspensions.
Using silver feeds the silver cell.
I think he spent maybe up to 10 hours extra to recover 6 extra grams from the gold filled scrap. Combined with the extra headache, I think it's not worth using this method.
@@lazyman114 Trying something new always takes more time. Doesn't mean it's not worth trying. Best way to learn something new.
The problem Steetips ran into is not inherent to this method. It's a problem whenever the inquarted gold is much less than 25%. At 25% you get a gold sponge.
I have watched so many of these videos now and I still find it fascinating. I am sure some time in the past person or group figured out how to do this in antiquity. That knowledge was lost and that is how the rumor of alchemy turning lead int gold came about.
Thank you for doing this video. I love it when people put themselves in situations that they're new at.
Great video, it’s fun to watch you try new things…always learning! Maybe due to the increased reactivity of the base metal less is required.
I think this video perfectly illustrates the difference between how things work in theory and how they work in reality.
I thought using gf scrap was a great idea, but I never would have thought you had the troubles with it that you did. Great video.
I was anticipating the gold falling apart. It just didn’t happen as quickly as I was expecting.
Now this is gold content. Love the experimentation vids.
This gentleman sound's like a Airplane Captain I feel save to fly with. I am watching this for 3 days, it is really interesting. Thank you. Good bless America and it's service to the world.
Thank you!
Don't thank me, please I didn't do anything. But this videos are Legendary.
ua-cam.com/video/5z0wUA4q1yA/v-deo.html this person has all the hacks on UA-cam.
Fascinating video as always I thought the splatter board idea was quite ingenious in its simplicity.
Really good idea, getting even more efficient with the process for gold filled material. I love seeing a new process or idea
I think he kinda had to with this round. He said during one of his recent platinum videos that Mrs. Sreetips wasnt happy with him getting behind due to the platinum stuff.
OMG! I am so excited to watch this just because it's an hour and 20 minutes! Can't wait!
Don't know whether this might be useful but I used to have to extract settled sediments from the liquids, the problem was you couldn't Syphon off all of the liquid, so I got a wine bottle with a plastic screw top, cut off the bottom with a tile saw, then you could fill with the liquid and leave it, the sediments settled on the plastic cap right in the neck, so you could Syphon off almost all the liquid without disturbing the sediment, it's also how the painters extract pigment from water based paint out of brushes, it just flows out of the brush and falls to the bottom without circulation,
Appreciate the video! I know it’s kind of a taboo subject on UA-cam but I’m really interested in the financials behind buying scrap gold / finding the chemicals for the best prices / selling the refined gold for profit etc.
Thanks again!
Great work as usual Sreetips. The zinc and copper will use a little more nitric acid than the silver would have because these metals both have a valence of 2 rather than the valence of 1 for silver. Interestingly, under some controlled reaction conditions, zinc will form nitrous oxide "laughing gas" instead of the brown nitrogen dioxide that usually forms.
I noticed some white foam during the nitric boils.
Considering that a lot of colloidal gold went to your temporary waste container while cleaning the precipitated gold, the yield was really good. I believe it was so close to the theoretical yield because of the extra from the gold filled material, about 5 to 6 grams.
Anyway, that's a messy alternative to be used when you have no silver/copper readily available, but it is surely not ideal.
well sure it is messier, BUT on the other hand you do 2 refinings in one, scrap and carat, so it seems like it does save work, and quite a bit
Thank you streetips. The audio quality is almost perfect.
Your most perfect bar yet, and at today's spot price just a bit over $7300. And it seems that the high-purity gold precipitate tends to clump together (so that less of it gets poured off with the waste solution) than the low-purity stuff earlier.
You've gotten way safer with your technique in these videos. Love this and really enjoy the content you make. Awesome content!
I see the benefits of using the gold filled material for inquarting. I wonder what the cost benefit is compared to silver. A higher gold yeald, but not much silver to recover. Still fun to watch.
I refine silver also. The 1st step is to dissolve it in hot dilute nitric. So I missed an opportunity to get some more silver dissolved. I have much sterling that needs to be dissolved. But I’ve also got a bunch that needs to be melted, granulized, and run through my silver cell. I’m way behind on everything.
Excellent video! Really proves the point that your silver enquartation approach works really well compared to using gold filled scrap. Still, in spite of the extra work you produced another stunning bar with a very good yield. Well done! 👍
I love to sit and watch your videos I learn so very much . Even though I don't do experiment such as yours . It's always good learn something new from a learn Ed person such as you .
Even in these difficult situations,...you produced an excellent yield and excellent content. Must be difficult to concentrate on the video-content side, while working on a stubborn process.
Man I fell asleep last night at 1:04:09 !! Finishing now! Man this reminds me of inquiring with too much copper!! Nasty mess lol so much extra work
A lot less loss than anticipated
Ended up with a good looking bar! First drop the liquid was the same color skin turns when wearing gold filled jewelry! Have you thought about going to a greater gold percentage with the alloy to see if it prevents it from going colloidal?
Didn’t think of it for this run. But it’s not a bad idea.
@@sreetips the other thought would be to re-melt after the first couple of nitric acid baths when you are no longer getting a reaction and most of the zinc is gone. You would be left with mostly copper and some silver and it might keep it from breaking down into colloidal.
Your Videos have soul cleansing quality.
I got a kick out of the aqua regia cleaning up that nasty looking glass! Great video!
My idea for a cool bit of video, or video in itself, is showing how the lead in solution reacts to the sulphuric acid by adding a bit of lead or solder to what would be a gold refining process Obviously it would only be a proof of concept video and not actually include the use of gold in solution, but maybe some weighed out (gram or two) before and after lead/solder to a silver or copper solution? Just a thought. Thank you for the awesome videos.
Coming up, good suggestion.
@@sreetips Cool :D
You are welcome! Tremendous video of a tremendous effort with a tremendous result that I watched in tre instalments and which I give tre tumbs up--->👍👍👍
I enjoyed the longer video. This was a fun one to watch. I knew in the end. You were going to produce an amazing looking bar of pure .999 gold. I'm looking forward in you tackling the gold refining waste. This gold filled experiment throw a lot if junk into it im guessing. Fun stuff Sreetips.
I’m might jump right on the waste and get that gold out of there.
@@sreetips I was thinking about that.
Me and my wife recently discovered your channel and we have been bingewatching your content. It has a very strong ASMR video feel to it. Now we got talking about your accent and im thinking Boston, the wife is saying Vermont. How wrong are we?? Absolutely enjoying the video's!
Iowa
@@sreetips oh lord.... haha tnx for your reply. Love what you are doing
Wow. Did not expect that much difference (powder instead of a sponge.) Looks like you could cut back on the amount of base metal when it contains zinc.
I don't think you made a mistake trying this. You just need to tweak the process a bit, and it could well work out better than using just sterling silver.
I agree, though he uses sterling to refine both the gold and the silver. I figured it'd be easier to refine the GF than it would be to increase the karat yield. Would be nice if he tried again at some point.
Gold filled takes several days to get it done. I can refine gold to high purity in ten or twelve hours. Combining the two processes into one, like in this video, seems that it defaults to to longer of the two processes, time wise.
I may try it again with a smaller quantity of karat scrap and reduce the amount of gold filled I add.
@@sreetips The basic idea was sound. But yeah, it was a large amount for a trial run.
if you use a stainless screen that's touching the water you can get a finer beads of inquarted medals
'Atta boy. That's more like the result we're used to. And the pour lines on that little bar are amongst the nicest I've seen from you lately.
Love watching you work sreetips. I never miss a video.
Been doing my revision. (You've got me doing my balanced equations again!!) Seems to me that the white clouding solid making that first filtering a nightmare was almost certainly Lead sulphate. Anyone agree? Sree mentioned that lead solder was likely present in the Gold Filled material. Honestly, this channel is reigniting my love of chemistry all over again! If I'm ever at a pub quiz, I'm definitely going to know what Muriatic Acid is more properly known as!! Thanks again for all your effort.
Tin and nitric form metastannic acid, or tin paste. It will clog a filter like trying to pull Elmer’s glue through a filter paper.
@@sreetips and this is why I should not be trusted to get out the chemistry set!! thank you!
Very interesting to see you use the gold filled scrap this time and very interesting to hear the facts of "gold plated", I will never buy this now after learning this from you. Nice that the yield was close, I wonder how much gold is in the stockpot? Awesome video. 👍
36:39 You no need to waste hydrochloric acid for silver test. Use for it medium to high saturated solution of sodium chloride (cooking salt times cheaper than muriatic acid). And salt will not rise acidity of solution, but gives same precipitation result as acid.
36:50 That green cloud is copper dichloride (CuCl2) and possibly zinc tetrachlorocuprate (Zn[CuCl4]), both salts quite unstable(especially second) in nitric acid or it's salts solutions
43:44 Nasty ortostannic acid (or fine tin oxide, from G.F. material) clogging filters in minutes or go though it if not fine enough. Using filter "sandwich" will help alittle. Filter Sandwich from top to bottom: rude filter (cotton pad), semifine filter/filters(quick and/or medium flow class) and fine filter (slow flow class a.k.a. "blue tape").
To prevent forming tin oxide add citric acid as inhibitor (about 24 gram per 100 ml HNO3) and avoid to heat solution above 50°C.
53:46 forgot stannous chloride test
About that silver test, I'd say it is inconclusive, led chloride will also precipitate. The way to distinguish led and silver is to take a bit of that precipitate, (try to) dissolve it in ammonia and add some potassium iodide. Led chloride won't dissolve in ammonia and silver iodide will give a nice, bright yellow precipitate.
Or, just add a piece of copper. Silver will cement out, the lead won’t.
I didn’t do stannous at a couple spots. I’m so used to not do it then I forget while shooting the video.
@@sreetips Works ... in a non-acidic solution.
@@apveening Lead chloride precipitate only in concentrated solutions, in diluted solution it's redissolves. Solubility difference between lead and silver chlorides is significant: for PbCl2 is about 1gram per 100ml (at 25°C), and for AgCl is about 20micrograms per 100ml (or 0.2gram per tonne)
Over an hour sree refining video on a Friday night 😎😎.
😊🇺🇲
Thanks for showing us that experiment.
Hooyah Shipmate!!! I love your videos. You do great work. I have an idea, could you put your fume hood over a regular glass topped stove? Then you would have four burners at the ready and you wouldn’t need to keep replacing the single burner so often. Thank you.
Also a self cleaning oven gets like up to like 900 degrees. That might help instead of using your outside oven/ kiln. I hope not to be nosy, but after seeing your videos from years ago it seems like you are constantly trying to improve your processes. I’m mostly thinking of how I’m gonna make my refining work center. You motivate me!! If you can do it I can too.
That’s not a bad idea except, the stone wouldn’t hold up to exposure to the acid fumes.
@7:00 here the stories, the memories, the tears and the smiles, the efforts and struggles of a multitude of humans is molten down into oblivion...
This has been happening since ancient times. Biblical.
I really enjoy these longer videos like this. I prefer a long video to multiple shorter ones I think. I’m guessing you won’t be enquarting with gold fill again anytime soon… ouch… still, pulled it off. Challenge complete. Lol… 👍💪💪
Today I am increasingly aggravated by my state legislative branch. Again, they have reached into my pocket and helped themselves to take money which does not belong to them. I am distraught to the very wickedness of their hands and I am resolved to halt this ongoing molestation of my very person. FU legislation!
Most people are clueless about how their finances are being plundered.
From the pimple to a mighty dimple bar! Very nice!
Beautiful recovery from what looked like a colossal mess.
I've been learning so much. I might try my hand at metals recovery.
Thank you for the demonstrations of the process of “Aqua Regia”.
Glad to do it.
Zinc is about a third less dense than silver, so every 1 gram of zinc you add takes up the volume of 1.47 grams of silver. So a larger fraction of the volume of the alloy is going to be base metals. With the same amount of gold stretched over a larger volume, the resulting gold particles will be smaller. So it's basically the same adding way too much silver, which would also end up giving you that annoying fine powder. At least, that's my reasoning. Density in alloys is probably not that simple. Somebody who knows more can correct me.
When you get the purple gold nanoparticles in suspension, I wonder if adding a small amount of SMB would act as a surfactant, and cause them to condense? I know that it can make particles of many atoms when it reacts with chloroauric, but I wonder if it can have the same effect on particles in suspension. Next time you get some 'purple gold' it might be worth putting some in your spot wells and trying different remedies like copperous, or even lye. If you can find an additive that efficiently condenses colloidal gold, it might open up other refining options.
Seems like no matter how you process GF scrap it's a pain the ass. If there was only a way to figure out how to streamline the extra time it takes it would be a great way to use up all that GF scrap you got stashed away.
would be nice if he tried again at some point. Was hoping it would streamline the GF process. Maybe he needs to add less GF and more karat due to the zinc?
Trying to process both at the same time usually defaults, time wise, to the slower of the two processes. Seems like.
Wow at the final dissolve in aqua regia, it seems the solution was so saturated with dissolved gold I think that's why it was having trouble dissolving more until you added more Hcl! You can tell when that auric chloride is that dark the yield is going to be crazy! Amazing video, and it was a dirty procedure, but as usual, you turned it into a win!
So glad to see a happy ending on this. It sounded like it wasn't going too well and I was afraid of what the actual yield was going to be, but in the end, it's a gorgeous bar and very little (temporary) loss of gold!
That’s exactly how I was feeling
Another stunning looking bar of gold, well done Sir..🙂👍
I think the expression is "Can you do it? Well, yes. Should you do it? Heck no!"
Interesting reactions there. Would be interested to know what dropped out of the Blue Nitric residues - would guess a whole heap of copper!
Correct
That test for silver with HCl in the small beaker was inconclusive, led will give the exact same reaction.
Beautiful bar! Super interesting process this time. It looked like you were loosing quite a bit when the gold was in that finely divided state during the pouring off process. It’s really interesting the different states the gold goes through during the process. Any ideas for future inquarting, i.e different metals or just going to stick with sterling?
I have more sterling that needs to be dissolved so I’ll probably use that.
As always, great video,beautiful bar.
Awesome video love it. I would like to see you refine gold-plated material I think that would be cool to see starting weight vs refined weight, just a suggestion. Thanks again
Search for his vids on sulphuric acid stripping cell.
He has a video where he does exactly that, if I recall correctly.
@@buggsy5 certainly.
Then not long after, he sold all his gold plated scrap.
Telling.....
Is the juice worth the squeeze.
@@NOFX0890 Gold plated scrap is not worth refining, probably even with a stripping cell.
It might be profitable for a big refinery that could treat it as a secondary recovered material. Heap leaching might also be worthwhile if you have a few tons of the scrap - but that process is really nasty.
This is my favorite show.
That's a good looking pour sir! Cheers from Canada! 🇨🇦👍
Great save, i was worried when it was splattering and turning into black mud!
I was a bit concerned about the yield. Was relieved to see it was very close.
I’d have to say you did a great job considering how nasty the solution looked prior to the first filtration. I think I’d have to agree with your conclusion too. Only reason to inquart with gf is if you were desperate and really couldn’t get your hands on some silver or copper.
I've literally been binge watching now for like 3 days and that's the first time you've worn a mask lol
@SRESSEGKL get a life scammer
For every 108 g of silver you need 2 moles of hno3. 2 moles / 14 M is 1/7 of a liter of concentrated hno3, or 140 ml of concentrated hno3. For every 65 g in of zinc, it’s also 2 moles or 140 ml of hno3. Zinc will gas out with 22 liters of h2 gas for every 65 g of zinc. This is why zinc dissolution turns into a frothy mess.
“Frothy mess” is right
Thanks for a different method something new I learnt about gold filled jewellery to gold plated. You have great patience. I reckon that would be very beneficial especially with gold. Well done 👍 A big problem I have is not all gold is marked. But I've come across 18 K with no marks. It must be jewellery that is home made perhaps??
Sometimes a jeweler will size a ring and cut out the karat stamp. The jeweler doesn’t care about being able to ID the metal that the ring is made of. Only about getting it to fit the customer properly. The jeweler will put 10k clasp on a 14k chain because it’s a more durable alloy than 14k - according to him (the jeweler).
I have seen gold from Thailand, although many decades ago, that was in the range of 18k to 20k and unmarked. Really soft jewelry however, not good for everyday wear.
is home refining profitable? aside from when you purchase for demonstration purposes & overpay...
Also I was thinking Instead of just doing a straight nitric to pull out the base metals only, you could do it another way without having to inquart. Why not do aqua regia to put all metals in solution then precipitate/filter & do nitric pulls when it is a dried powder? I think it would do it better with fewer nitric boil pour offs... I could be wrong, I have as yet to do my first refine with all this e-waste from computers I found that I couldn't just rebuild & give away... Surprised that some of these old processors can go for quite a bit of cash... same as the ram & other hardware... almost like it was when it was cutting edge technology... lol..
You could put the karat gold directly into aqua regia without inquarting with silver. But two major problems would arise. 1) it makes a very dirty solution that looks like used motor oil. 2) any of the gold that contains much silver would passivate. The HCl in the AR would react with the silver and form a tough layer of silver chloride that would shield the gold from the acid. To remedy it must be removed before the gold will go into solution. Both problems are completely eliminated by inquarting with silver (or clean copper) and parting with hot dilute nitric boils BEFORE going to aqua regia. Plus, I refine silver and the first step is to dissolve it in hot dilute nitric acid. So why not use it to inquart? Like refining both metals at the same time.
113.08 i noticed that after your 2nd refining the gold became more solid or not as fine particulated as the 1st refining did, It poured out alot easier.
Higher purity tends to settle quickly and clump together nicely.
Comment on your torches Dude.
Spark up a normal propane torch and look at the flame.
Inner cone is about a 1/2” cone out, in the centre.
Outer cone is a longer 2”-3” cone, just outside of the inner cone. The tip of this is the hottest part of your flame.
Outer flame. Residual gases burning off.
Look like your outer cone is tipping at the bottom of the dish with a massive load in the dish. Too far out causes carbon build up.
Awesome video
0.3G
Was there an estimate on the gold filled?
6g?
I seen you previous post on the flame. And I agree with you. The estimated yield on just the GF scrap was about 6.6 grams.
@@sreetips one day when your big and rich and want the cleanest flame - Pick Hydrogen.
Super clean gas. People us is for clear and white enamaling. Melting the beads onto a metal base, by hydrogen flame. Amazingly clear.
Which means 0% contamination from your flames.
Why can't you filter your gold waste liquid and add it back to the Aqua regia? Thanks for another very interesting video. I'm a finish carpenter and respect/enjoy all forms of precision videos. CEE Engineering and Sreetips are always a must watch for me.
I could do that, but that would add time to an already lengthy process. Plus, letting it build up in the waste container is like a little off-line savings account.
Sreetips, instead of using gold filled jewelry, maybe try zinc pennies. 125 grams of clean zinc for 50 cents. No springs, hardware or colloidal gold. Dean
$7411.00 as of today. I'm amazed how much I've learned from these vids. I found myself thinking "That color looks terrible" and what step came next. Why do you sometimes dry the gold on a hotplate before melting and other times just go straight to the melt?
I started drying the gold because the wet gold powder stains my melt dish. And the dry gold seems to melt cleaner.
You should try using your silver shot to inquart and use the same constants you use for Sterling.
Hi Screetips… could you please weight one of your gold liquids some time? I know it is an obvious thing but everyday people pick up a carton of milk and know how much it will weigh… just interesting to see a liquid of the same volume could weight three times heavier than “normal” ;)
I did that exact experiment in my electrolytic gold refining videos type wohlwill into search block on my channel,
I've wondered before if you could use pure copper to inquart instead of silver. This video almost answers that, but it sounds like the zinc is what caused most of the issues. At least in the amount it was. Still, interesting to see alternatives and the pros/cons.... mostly cons lol.
Yes, clean copper actually works better than sterling silver. Less silver chloride to deal with.
MAKE AMERICA GREAT AGAIN!!! LOVE YOUR VIDEOS!
Great video and it seems like a real pain to process it this way. But at least it turned out a beautiful bar. Seemed to break the gold down a lot more than silver.
Very Beautiful bar I love how it has a fingerprint look on it . Keep up your terrific videos . 👍👍👏👏
Gooood evening from central Florida! Hope everyone has a great night!
Same to you😊
Goooood evening!
why not Throw it all in a crucible add borax iron potassium nitrate and lead oxide to oxidize away base metals use bone Ash to oxidize LED away precious metal button.. add half the weight of the button with previously refined gold melt together.. use AR filter silver cheaper and faster.
I’d like to see that in a video. Sounds interesting.
@@sreetips I don't do videos. But is easy pyro chemistry to remove base metals and recovered precious metal. Inquart button with more gold. Part precious metal button with aqua chemistry AR. Inquarting karat gold with previously refine gold instead of silver or copper is also faster.
finally, a very long videos like the old days!
_Video ends_
"Hol' up. That was over an hour? I don't even notice." Enrapturing. I don't think I'll ever get over the color of that chloroauric solution.