Gold Bump-Sluice Shaker Table
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- Опубліковано 26 сер 2023
- I show the design and operation of a bump-sluice shaker table for the fast and efficient extraction of gold and other heavy materials. I perform an experiment to measure the concentration ratio and extraction efficiency of the machine.
Keywords: Gold Extraction, Gold Prospecting, Gold Shaker Table, Gold Sluice, Gold Bump-Sluice, Gold Ore, Gold Mining, Bulk Ore Sampling
You reinvented the Wilfley table. The heart of most gravity concentrating circuits.
Yes, thanks.
Really love your innovations! Almost nobody is advancing mining tech other than you.
Cool setup indeed fam. Keep on having fun getting that Au and living the dream. Gold Squad Out 🤠
Awesome job
by far the most well engineered and effectively designed home made shaker table i've seen - this is the first table i've seen that I cannot think of any improvements. ~excellent work Orophilia~ No table gets 100% recovery, they all miss a %, and i'd say yours is far above average. In a pinch, you could use litharge for testing, and it's yellow for contrast vs fine lead powder which also works well for table testing -200 mesh and beyond. I melt all my hardrock fine gold into buttons, but let me check and see what I have.
I have litharge. That's quite a nice idea. -- Dave
Very nice!
Great job
I hope that you filed a provisional patent for this already. Otherwise, the design is now public domain.
That being said, I love this little machine! I think you are getting close to your goal of creating a small, lightweight, and portable machine. Bravo!
Thanks! My intention is to put everything into the public domain via YT. -- Dave
@@orophilia that is Nobel. If you want to make money on your inventions, you certainly could. You could even make plans and sell those. Get in touch if you want to talk about it.
Hans
@@HansHartman i would buy one... haha. i'm not skilled enough to build one of these
@@HansHartman MBMMLLC made a big one of these about 5 years ago, there have been a few other identical small ones over the years as well. Its a good basic design.
very noble of you . Get it done and contact me . I would be honored to be your first customer .. I am serious . love your table ..BRAVO
Excellent evolution!
By making the lid of the controller box inverted from how it is now you avoid the recessed lid that now would trap water and act to funnel it into the box. Especially if opened in the field. It also allows you to put the screws on the outside of any seal you may wish to use.
There is a top to the box (not shown) that should protect the electronics. I appreciate your ideas! -- Dave
excelent. It is clear and wonderful.
Excelente 👏
Looking good.
Nice Job Well done
New supporter from Canada! What a unit you got there.!! Absolutely loved it 🎸🎸
I grew up outside of Toronto and spent a lot of time with my dad rockhounding around Bancroft. Glad to meet you. -- Dave
@@orophilia I also spent tons of time with the old man prospecting/detecting. I’m on the Island and definitely a pleasure to meet you.
Mitch or Rusted ✨
@@RustedPioneering A pleasure, Rusted.
Thats wild Dave! Love the color as well. Im still in the "learning to prospect" phase, your video came through my feed and I watched your entire video with fascination. Your explanation of your build was easily understandable. Thanks
🌟New Subscriber🌟
Thanks!
@@orophilia 😢
As Freddy Prince would always say looking gooooodddddd
I'm impressed. I'm just building some machinery to extract gold. I'd definitely like to build a table of some sort. Problem is supplies to make something
Base: You can make the top of your base a hollow box that you can fill with sand so it has more mass than the shaker table. Then the stiffness of the legs won’t matter as much. At the end of the day, dump the sand so you base can be very light in transport mode.
Hi John, Yeah, that's a good plan. Rocks also will work well. -- Dave
I can fit about 30 lbs of gold bearing black sands from Benson Beach at Cape Disappointment in Washington State into a medium flat rate box. It is the most difficult material I have ever run across. If you can effectively separate this material, anything else will be easy. Get in touch and we can work out the details.
Thanks so much for the wonderful offer! At this time I'm not able to run the table, but I should be back in business soon.
@@orophilia The offer stands. Let me know where to send it when you can play with the table again.
Great seeing an inventor at work ! Check out the flour gold wizard guy, he does a lot of beach sand mining.
I appreciate your comment on your panning 👍⛏️😎
Sukses mantap hasilnya
Very nicely done sir!
Really good size for hobby prospecting and mining. I like the material you used to build your table.
Enjoyed thanks much
Peace Prospector Tripp
Thanks, Tripp!
This is so cool seeing one of the first table builders I started watching on shaker table builds commenting on another great table builders video. So awesome to see see the mutual respect you 2 have towards each other. Both of you are extremely bright and inspiring guys to watch.
@@f5stwista Yeah, I learned a lot from watching his videos. -- Dave
That's a nice compact machine! It's a smaller version of mbmm huge set-up. You should get in touch with Jason from flour gold wizards and ask about some flour gold and he can advertise your machine if you want to produce it for people. He's got quite a big following 👍❤️💛💚 I would send some but I don't have very much.
Yeah, the table is a nice size for the back of a pickup. Thanks for the comment! If you know Jason tell him that I need a bit of that flour. -- Dave
Machine looks great. Not using rubber mat also saves a lot of weight.
Yes, for sure. -- Dave
You are the Master of putting your ideas into a finished product. It would seem that you may get a better capture rate with less slope or have a mid grade port as well..
Yeah, there are a lot of variations and tunings of this type of table. I've been out of action for a while but I'm getting ready to try several more ideas.
I'll buy one!
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
That's a great build, I have thought about building a shaker table before but have not yet done one. Great work! I love DIY stuff, New subscriber!
I have some very fine gold from the upper Mississippi. I have been selling pay dirt with this gold in it mixed with some gold from Alaska. I have very little at this time, but will be acquiring more in the near future. This gold is 100 to 200 mesh.
Hi Rick, that would be great. When you get a little bit please let me know. -- Dave
@@orophilia I will contact you next week 🙂
@@rick9297 Super!
I would recommend a double sliding conc splitter. That way you get your high grade cut and a middlings cut
Thanks, Tom, I'll see if I can figure out how to implement it in the next iteration. -- Dave
I now found a use for my rusty Blackstone grille
Yeah, you can watch the gold marching as you BBQ your T-bone. 😋
@@orophilia oh ya...
Good job. Wish I knew how to make somthing like this. If I wanted to build one. What do you think are the most important parts of allowing the design to work?
Howdy. I have a build video coming, so you can take a look at the details. -- Dave
I can't wait to run our ore and cons over your table Dave! Wonderful design and engineering! 👏 Will there be a 2tph table in the future?
I'm looking forward to it also. I've been working out strategies for larger throughput and I don't see why not. If you find the material then we'll get it done. I don't think a single huge table is the way to go because the weight and cost of the table grows much faster than the throughput. So, there's an optimum size for the table, probably around 3' X 6'. The job then is to engineer a feed system to make it automatic. -- Dave
How many turns of the 24 gauge copper wire and the dielectric material did you directly connect to the BT5796 High Power Drive module? Did you directly connect one of the DafuRui pulse width modulation control unit to the PWM inputs of the BT5796? Also did the 12 volts battery connect directly to the BT5796 High Power Drive module B+ B-? I'd like to build a version of the table drive mechanism that you built. Any insights appreciated.
I'm travelling, so I have to remember the details without seeing the unit. I didn't count the turns on the coil because I really didn't need to. Counting turns is a pain and I had already estimated the number of turns and the force that would be generated. The inner diameter of the coil is 2 inches and the outer diameter is 3.25 inches. The coil is about 3/4" thick and as I recall it has 8 ohms impedance. The magnets are 3/4 X 1 X 2 (I think, but it doesn't sound right. I'll look it up.) and they are backed by a 1/4" A16 plate. With 12V I would only get 1.25 Amps through the coil (not enough), so I used a step-up switcher to produce 18V for the high-current switch. With that I can get 2 Amps through the coil. I run the table at 5.85 Hz and about 50% on the PWM. I'm an old engineer, so I consider that marginal. I would prefer at least 3 Amps for the coil, i.e., 24 V from the switching power supply. The high-current switch is driven from the microcontroller because I wanted to play with acceleration profiles. The acceleration profile is not needed; in the end I just drive the table one way for half the time and the other way half the time. However, I consider it important to have adjustments for both the frequency and the amplitude. This allows fine adjustments that can really affect the performance of the table. If you are not familiar with programming micros perhaps I can help. I used an ESP32, but that's total overkill, a simple Aduino would do. Be careful with the total moving mass. My table has about 5.5 kg, including everything except the dirt. The bump adjustment is also very important. It's a fun project and after a bit of tuning it works remarkably well. -- Dave
The linear motor that you point out in the video, did you build it yourself? I get the sense of changing magnetic fields interacting with the two magnets causing the displacement. The greater the linear field the greater the displacement. I'm assuming that changing the PWM by adjusting the pot increases is the adjustment. I also notices that you had two other power supplies in the box. What DC voltages were needed to for the current bridge?
Yes, the motor and controller are homemade. Yes, the pot controls the PWM amplitude (the width of the pulse). I added two other PWM controllers to control the pump and a spare that's not in use. I use 12 V from the battery.
Talk to Chris at Vogus Prospecting. He has a lot of tiny gold. Also Dan Hurd. Both UA-cam channels. Both seem like really nice guys.
Thanks, John.
Flour gold wizards the man hence the name 👍❤️💛💚
@@rastaralph7154 Do you know how to get in touch with him?
Damn you make some wonderful equipment and wonderful tapes.
Am wondering what angle you run left to right , and what angle front to back your table ?
Hi GSF. I'm currently running 1/2" per foot back to front (2.5 degrees) and level left to right. I can adjust this for higher feed rates (3.5 degrees) and a slight downhill left to right tilt, or for lower feed rates (1.5 degrees) and slight uphill tilt left to right. The latter works well for cleaning. -- Dave
@@orophilia So is it the BUMP that causes the left to right movement of particles ?
@@MohammedNovalija Yes, exactly. The bump is like the tap on the side of a gold pan. It preferentially moves the higher density material. -- Dave
How big are the magnets and how big of a coil. Thanks this thing is great im going to try and build one
The magnets are 2" X 1" X 0.75" N52 Neodymium Iron Boron. The coil is 0.5" thick and has an inner diameter of 2" and an outer diameter of 3.5". The wire is #24 AWG and the coil resistance is 10 ohms. I have a complete build video coming so stay tuned. -- Dave
@@orophiliathanks I’m ready to order parts this is a great design.
Are you still planning to do a video on table and electronic construction. Would be great to see a schematic wiring diagram.
Good idea. I think I have all the footage to put together a decent build video. I'm a bit under the weather at the moment but I'll start reviewing what I have. Yes, driver-control box is interesting.
I really enjoy your videos.. so this one was a good suprise today 👍... your new table and run gear looks really sweet!!.
I like it.. i have a question for you.. Are your Table groove slots just Squared cut 1/4" deep?? Or are your cuts at a slight bevel?
More of a V groove? Looking forward to more of your videos... :)
Hello. The grooves are 1/4" wide and 0.09" deep. I've found that that works well for this kind of table. They are completely square x-section but the ends of the grooves that allow the gold to run onto the table have a special profile. I'll cover that in the next video. -- Dave
@@orophilia Thanks a bunch Dave.. i appreciate the reply.. Looking forward to it.. i see you've had alot of videos that my Notifications never gave me.. wtg UA-cam.. haha Really dug your grinder rock crusher design also!!! Good Stuff Dave 👍
@@tadvanallen YT is an enigma, for sure. -- Dave
Just how fine of gold are you looking for? I beach mine on Lake Superior. A good portion of my gold is -100 mesh. Honestly never tried screening it smaller than that. I'd be happy to send you a bit for testing if you'd like.
That's super generous of you. Yes, beach and river gold is what I'm looking for to test and tune the machine. Please leave an email at . Just 30 or 50 mg is enough, and good or bad, I'll make a video. The finer the better. -- Dave
Will you be including a circuit diagram in your build vid? I'm an old guy with some electronics experience - but mostly of the "Popular Electronics" magazine and "Heath Kit" variety if those references are familiar. But I'm a "Builder Bob" kind of guy and would really like to try building one of those things! Really have enjoyed your other videos.
I have all the 'footage' to make a build video and I'll be doing that next. I'll include the circuit diagram that I used with the micro and I'll also suggest an easier circuit. -- Dave
Ok, best I subscribe then 😏
Dave the 24 AWG magnet wire that you used where can I buy I buy it? What spacing for the fixed neodymium magnets did you set? Also what was the dimension of the4 flex material that the table top was connected to?
Hi Stephen. I'm about to publish a video on the construction of the table. Please take a look.
Hi Dave great to hear you will post how to build the table.
Thanks so much Dave!
Q: How hard was it to get the plywood as flat as possible? (I'm thinking of asking a local machinist to mill me a 36" X 30" sheet of aluminum perfectly flat but don't want to waste the effort if it's not necessary )
Q: Is there any special sauce in the V grooves as far as depth and shape is concerned?
Thanks again, what a wonderful job you did!
I used 1/2" Baltic birch plywood for the top. The plywood was laminated to a hardwood frame measuring 3/4" X 1.25" and I divided up the internal volume in a 3X2 array with more of the same hardwood frame material. This structure is called a torsion box. It's very stiff and flat.
Wow! Such a nice machine! Home size of mbmmllc shaker tables!
Di you thought about a movable divider in the collection canal, so you can choose how much black sand goes to tailings, and how pure concentrate is collected? Or it will be technically harder to build?
Also, will longer long slots be beneficial, or this is their optimal length? Just curious
Good morning! All good questions. The grooves may not be optimized but they do work. -- Dave
@@orophilia i see they work XD
i was thinking if making them longer would not help with bringing more concentrate to the right corner, longer route for it to interact with waater and beeing shaken could lead to better separation in my mind.
I am very curious, because i see potential for home PCB refining, and other electroscrap XD
And this bump and low frquency is crucial? vibration motors work worse?
@@ejkozan The bump motion is the critical part. The velocity at the time of impact determines the distance that the gold and other material moves per bump. The rate of bumping determines the overall rate that material is transported. The water flow and table tilt determine the rate that the material flows downward into the tailings tray. All the possible adjustments interact with each other. -- Dave
@@orophiliainteresting. i am asking because mbmmllc's shaking tables seems too use only vibration and your is different. i expect it exploits inertia of particles when bump (sudden braking of table) happens. a bit like tapping of panning bowl
@@ejkozan It's my understanding that the mbmmllc tables rely on a different principle, i.e., the flexures are angled backwards and the table is driven sinusoidally with an electric motor. See my very first video on this channel.
Also what kind of lcd did you use for readout?
I used two LCD displays with 172x320 resolution because they were hanging around. An easy and cheaper way is to use a microcontroller with an integrated display like the Lilygo T-Display-S3 or similar. Be aware that there's a lot to do to program these micros.
I have some black sand from Washington’s Cape Disappointment if interested. It has very fine micro gold in it.
I’d love to try to separate it. please contact me at. orophilia.gold@gmail.com
What if the table top were 1/2 aluminum plate instead? You could router the grooves which would be a more consistant size and depth I t would weight less as well
Yes, certainly Aluminum would work. 1/2" thick Al plate would be very heavy relative to plywood. -- Dave
Hi Dave I have ordered motor controllers 20A DC 10-60V PWM Motor Speed Controller kit, neodymium magnets, Arduino Uno microcontroller, and BTS7960 DC motor Driver. I found a source for code to load on the motor controller. A have also located speaker copper wire 24 gauge on Ebay and have a question if this was your source used in the video. The wire is 0.6-2.0mm 0.1-2.4mH Amplifier Speaker Crossover Inductor Oxygen-Free Copper Wire and as I understand it the choice of inductance differs when the wire 0.1 mH (better at high frequency) to 2.4 mH (better low frequency). I'm assuming you chose higher inductance wire and that you didn't include a core. Any insight on wire selection and source would be helpful and if a core would improve the magnetic field strength without having to increase the current flow as you pointed out in your last post. I to am a engineer but with limited experience build a linear motor as you had built for your table.
Hi Stephen, You'll need 24AWG magnet wire, not speaker wire. When you say you've found code, is that for the Arduino? You'll need a microcontroller to drive the H-bridge switch.
Did you receive extremely fine gold? I have some in dense black sand.
Hi Bob, Thanks so much for the offer, but yes, I have enough for testing. Appreciate it. -- Dave
Can you tell me what the max hz is that this type of motor can run at before starting to over heat ?
I can run the motor for hours at full current without overheating. That's 1.8 amps at 18 V, or roughly 32 Watts. I run the table at about 6 Hz bump rate. -- Dave
Thank you Dave for responding . Ray
Ive watched several videos of yours, I live in California, would you happen to know if there are any affordable shakers for sale. Whether you or someone yoi know. I got some black sand I just need to run it, but very little time to build something. I have access to really fine gold, I am interested in sending you some just to see how you would extract it.
I will be out of touch for a while, but when I'm back in business I'll send you a message by this comment. I'd love to run some of your material to see if the machine will work for you.
Thanks for the new video of shaker table do you sell them?
Sorry, but I don't sell them. -- Dave
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Where to buy this table?
I want to buy something like this that separates gold from sand. Where can I find the nearest store to buy it?
There are shaker tables on the market. I would do an internet search.
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
It’s great what you’re doing, but we still want more!
Concentration that you’re getting is good especially for in the feild. Can you slow it down, change the angle and separate the black sands from the gold?
I want to help but the price to send dirt to the state’s from Australia is a bit of a burden.
Yeah, I want to do the same thing, remove more of the black sand. I'm working on it slowly, trying to understand the factors that improve performance. There are a lot of adjustments that can be made to the table, and there are three competing desires: High feed rate, high concentration ratio and low gold loss rate. -- Dave
Wrap a magnet in plastic wrap and stick it into your concentrate. I bet youll pull most of that black sand out, and you can use the plastic wrap (or a baggie) to remove it from the magnet
Agreed.
Very nice machine, do you sell these?
Sorry, I don't make these for sale.
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Where can I buy a grooved rubber mat like yours
I buy the Neoprene rubber sheets from Rubber Sheet Warehouse and I cut the grooves with a router.
@@orophilia How did you determine the spacing, depth and various angles that you cut out of the rubber mat. I would greatly appreciate a picture to some scale so I could cut my own.
@@tomsmith295 Hi Tom, Please see my latest video. It shows all the steps involved in cutting the grooves in the plywood. If you have further questions, please ask. -- Dave
Need one
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
I have ultra fine gold to sell to you for your bump table testing, or if you have a bump table to trade for some fine gold?
Thanks, but I now have enough fine gold for testing.
you should sell the electronic part with bumper.
would you sell one of them?
Hi Gary, Not at the moment. I'm still working on it but when it's done I'll give your question some consideration. -- Dave
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Got ultra fine gold from hard rock mining from Mojave desert rand mining district and rademacher mining districts I can send it in crushed pre or concentrates or both love to help lmk
I'd love to have a bit of the crushed ore. Thanks so much. Please contact me at
Would love to buy one from you please
Thanks, Steven. I'm still working on the design, but I may have something in the future. Or, maybe someone else will pick up the ideas and make a product out of it. -- Dave
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Get a hold of the flower gold wizard or Klesh
I've tried to contact Jason at FGW without success. -- Dave
Also wanted to mention that I used ChatGPT to tell me how much 24 AWG wire is required to measure a impedance of 8 ohms. Answer: 319.83 feet.
I use ChatGPT all the time now. I'm very careful to check the answers.
Sign me up.
Where do I get this?
Hi Brian, I'm thinking about this carefully. I believe the table would have to be made out of something more durable than wood to have some confidence in its reliability for field use. For me it's OK. If it breaks I'll fix it, but to sell it is another story entirely. I'm not yet sure what materials are suitable but I'll continue to work on it. Thanks so much. -- Dave
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Do you sell these?
Hi Kevin. Sorry, I don't sell the table.
@@orophilia would be interested in making one for me?
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Nice are you selling these?
Hi Fringe, Sorry, I don't plan on selling the machine. It would need a lot more work to make it a product, and the field reliability would need to be tested. I don't think it would survive long as it is, made from plywood. -- Dave
@@orophilia well it looks great. Good job!
ua-cam.com/video/R5bQ11V3Saw/v-deo.htmlfeature=shared
Can you show the technique you used to cut the grooves in the table? I’ve always wondered how this was done.
Sure. I have a build video coming. -- Dave
cost
Sorry, I don't make these for sale.
Hi, I'm a producer at RAW TV, we're the producers of Gold Rush and all of its spin off shows. Whats the best way of contacting you?
Hi Rys, Please email me at Orophilia.gold@gmail.com
Try to contact the flour gold wizard here on UA-cam
Thanks, I've been trying. -- Dave
Looks to me that if the table was a little wider you would remove more of the black sand.
Hi Drew, Yes you are right. There is a tradeoff between table dimensions, feed rate, concentration ratio and efficiency. Each table can be set up to optimize for feed rate, concentration ratio (purity) or efficiency (loss rate). Larger tables can have better performance in any (or all) of these categories and the expense of size and weight. -- Dave
@@orophilia Maybe you could put a neo magnet on an angle under the table to catch a lot of black sand.
@@drewconrad7093 Yeah, that works but it's a lot of trouble and it only catches the magnetic stuff, leaving over half of the fine black sand anyway. -- Dave
why not just buy some gold and use a file to get really small shavings?
That is a great idea! I'm going to try it right now.
Make me jaun
Thanks.
I have some hard rock ultra fine gold that I am willing to let you have if you like
May have some desert sand that I have not run yet that always has micro gold in it
@@DwanParsons-ei5fl Wow, that would be wonderful. Please send an email to me at orophilia.gold@gmail.com. Thanks so much!. -- Dave
Hou wee can test may sand ?
I will be ready in a couple of weeks. -- Dave
@@orophiliao ok I be in bodfish let me know when you free
Чёрный противный песок который лишний. Это платина + железо. Плотность Большая.