Silver Recovery From Tantalum Capacitors

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Here I process 250g of mixed tantalum capacitors to recover the silver they contain. First I pulverize them in my Mighty Mill, then I treat them with nitric acid to dissolve out the silver content. How much silver did I recover? Watch the video to find out. Please visit the Urban Gold Mining section of my web site at mdpub.com/UrbanGoldMining/ for more information.
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Chemicals used in these videos:
Nitric Acid: xelexo.net/index.php?main_page=product_info&cPath=1_162_414&products_id=8876
Custom Building Products Sulfamic Acid amzn.to/3lc3aSy
Hi-Yield Iron Sulfate (4 lbs.) amzn.to/3p788RA
Bonide 1-Pound Granules Stump-Out, 4 Pack amzn.to/2Vlty1y
Sulfuric Acid Drain Opener, 32 fl oz (2) amzn.to/3iX7Hpc
Tin Shot (1 Pound | 99.9+% Pure) Raw Tin Metalamzn.to/3fclLKl
Easy Peasy Urea Fertilizer amzn.to/38q5Xjx
Equipment and supplies used in these videos:
Compact 8lb Magnetic Pickup Tool with Quick Release amzn.to/3VjQjwO
3pcs Glass Graduated Beaker Set 500ml, 1000ml, 2000ml amzn.to/3faaHO3
12PK Watch Glasses, 6" (15cm) - Cover Lids for Beakers & Flasks amzn.to/3j5MHMS
Filtering Flask, 1000ml - Borosilicate Glass - Conical Shape, with Integral Side Arm www.amazon.com/gp/product/B01DKSY9WI
United Scientific Supplies JBF1150 Buchner Funnel, 1150 ml, Diameter 150 mm amzn.to/2WAamh7
1 Stage HVAC Vacuum Pump 4.5cfm, 1/3hp 110V amzn.to/3Sip451
Aroma Housewares AHP-303 Single Burner Hot Plate, Black amzn.to/378jL1p
300PCS 3ML Plastic Transfer Pipettes amzn.to/3f9JQ4B
AMMEX Clear Vinyl Medical Gloves amzn.to/2WBzB2A
Refining Precious Metal Wastes by C. M Hoke amzn.to/3oNtvr0

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Опубликовано:

27 янв 2023

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Комментарии : 62

@Enjoymentboy Год назад

I did a batch of a little over 400gm of these a few years ago and if I recall I got just over 40gm silver and a couple gm of palladium. The dust that was left over had those same shiny bits and under a strong magnifying glass I could see they appeared to be silicon (they remained after an AR boil). I still had over 300gm of dust left over and I was curious as to how much of that was the tantalum. I had a small counter-top gold sluice I'd made years before and tried that out and it did a surprisingly good job in collecting the heavy stuff. I wound up selling the tantalum powder for more than the silver. Now I just save all the dust after I do the nitric soaks and let it all collect until I have enough saved up to process in a larger batch. It's not always easy to find a buyer for the tantalum but when I do they seem rather eager and I get what I feel is a decent price. Oh...and for that foam I find a small butane torch on low does a great job of breaking it down without causing issues.

@jamisontaylor878 Год назад

Cool excellent video thank you 😊 I use my magnetic stirring plate with heat cuts down on rinse water washing and really helps in the conversion process

@richardhulbert9480 7 месяцев назад

We have two companies nearby that buy tantalum capacitors. I called they were $14 a pound. Think I have about $10 saved up so far.

@southernoregonprospector9074 Год назад

I'm finishing up the latest batch of mills right now, so I can't wait to watch this video later! Already "thumbs up'ed" though, cause I know it's gonna be good! :-)

@MikeB2217 10 месяцев назад

Tantalum's has a very high melting point of 3017 °C (boiling point 5458 °C)

@macfixer01 Год назад

I noticed you were not wearing a mask or respirator while using your precious little mill there and dust was visibly floating out of it. You might want to Google the toxicity of inhaled Manganese Dioxide, which is also contained in those capacitors.

@damianstasek8946 Год назад

Lol a youtuber actually wearing proper PPE? First day on the internet huh?

@robertcase4579 11 месяцев назад

could you boil of the waste water and save room

@ashleymussell6655 Год назад

Good day, if you boil a pot of water place a plastic bowl in the pot and cover with an hourglass lid the water that condenses off the lid and fall in the bowl should be distilled

@corybuckles8492 День назад

Given that Florida is so humid, running a dehumidifier would produce copious amounts of distilled water for very little cost.

@dr.a006 4 месяца назад

I’ve definitely been keeping these for the past several years, someday to recover silver.👍

@OnsloVest Год назад

Enjoyed this. Always hear about tantalum capacitors but not seen them processed. Cheers mate

@aussiescraphunter7808 Год назад

great result

@afineliner740 Год назад

That was a good % recovery. 👍

@frankzahn7773 Год назад

If you run ALL your rinses through a filter, and burn it when melt the silver, you would get a little more silver.

@M0DiFiEDZ Год назад

Incinerating beforehand may eliminate the foaming issue and you could place a piece of copper in the nitrate solution to precipitate the silver as a readily meltable metal

@jessewilson8676 6 месяцев назад

I was thinking the foam was coming from the plastics also..

@juliengallot6193 Год назад

Nice vid thank you. I'd really like to see what would come out of this mill if we put connectors with pins inside like ide connectors or sata connector that would have been desoldered from a mother board.

@omegageek64 Год назад

I have some videos like that. Check out my channel.

@Sunshine-ji4gp 3 месяца назад

I am surprise of the result..I have collected 10 kg TA capacitors in 3 years..difficult to find a buyer here in the Philippines...

@colonialcharlie8702 Год назад

Would it surprise you to find gold bonding wire in some of the black tantalum? I have bunch of new old stock. Drawers emptied into baggies from closed business, that sold online. Cracking open some of the tantalum from different baggies, i found gold bonding wire in some of the black ones. I have maybe 5 to 6 kg of tantalum from the old stock. So I'm not sure how common the gold ones are yet. I set it aside for now.

@DJEuphoria24 10 месяцев назад

If you have it already dissolved into the Nitric- Acid why not just Drop the Silver with Copper. Then to use Lye and Sugar to make more steps to your process. When using copper will drop the silver and leave you with two less steps.

@goldensadventures1229 Год назад

Thanks Mike: Dang I been throwing these away I guess I should start saving them

@jeffholmes1362 Год назад

Good video, thanks for sharing, I was surprised you didn’t pyrolyse the material before processing, even if there is nothing in the plastic, it reduces the amount of material while dissolving the silver. But a great result, nice job

@adambuysyuckyhouses 10 месяцев назад

What do u do with your rinse water i just let mine evaporate. Leaves very little. U can straight melt silver chloride the lye is only for youtube

@saint27573 Год назад

The greenish liquid is from nickel in solution .

@robertsletten7466 Год назад

Awesome ... sorting T-caps as I'm seeing you do them ... Points of order .. Would it help to boil in HCL & wash ... before going to Nitric? 2nd would it not be easier to cement out the silver from AgNO3 on copper? Great stuff thanks for making my life simpler.

@scrapman502 Год назад

I was wondering if the value of silver you recover exceeds the expense of the acids being used. I've been passing up on thousands of tantalum capacitors over the years. Right now, I have over 300 old laptops to scrap out. I have seen several tantalum capacitors on each motherboard. I am just interested in recovering the gold from the IC's and connectors and I have not been collecting the capacitors. I just tell myself that I'm leaving something for the next guy to recover. If anyone is intersted in the leftovers, just hit me up. I figure it's going to take me at least a year just to recover the gold and I don't have the time or patience to recover the other precious metals, or even recover the copper.

@terryfolkerts6379 Год назад

I believe you said you had older capacitors mixed in . I wonder if somehow contaminates were introduced.i am saying this becouse I do the same process and have many times never foamed on me and it settled quickly on my rinses

@renegonzalez8070 2 месяца назад

As Mr sreetips always says incineration incineration incineration

@terryfolkerts6379 Год назад

Have you tried piranha salutiont to remove the plastic

@frankzahn7773 Год назад

What about the palladium and tantalum?? Can those be gotten also?? Palladium for sure. Another good good video.

@dragtrucks Год назад

Does the hydrophobic powder contain any minerals?

@kwinterburn Год назад

As far as filtering goes, the Russians patented a filter, it was open cell foam like the filter media of tropical fish filters, but they compressed the thick filter to a thin disc, used it to filter the fine solids out, then released the pressure and washed out the solids, it was quite an inspired idea I thought

@theonewhowas7709 3 дня назад

lol maybe the foam is from the nitric reactic with the powdered shells of the caps or something like that... if was using a larger beaker.. couldve maybe just added more distilled water to dilute the nitric a bit more

@sddirt6840 6 месяцев назад

"Stirring seems to make it worse".... continues to stir it for 10 minutes

@chrisneal7798 Год назад

On rinsing, I've seen a video where after sugar is added and conversion is complete, they add water and place on heat. After short time the liquid will turn yellow/brown and then decant/ syphon off and only a few rinses required.....

@chrisneal7798 Год назад

Also, a boil in HCL will clean that up to nearly 3 nines fine.

@johnross8939 Год назад

Can't you just melt the silver chloride and reprocess the pellet?

@spirit_wolf123 Год назад

Question why not just use copper and cement out silver medal rather than go the silver chloride way. Of course if you have silver chloride to start with makes sense if you don't ?

@omegageek64 Год назад

My cement silver always seems to be contaminated with a little bit of copper. Reduction from silver chloride produces very pure silver.

@spirit_wolf123 Год назад

@@omegageek64 silver chloride and cement silver both come out 98 to 99 % pure both require a silvercel to be pure. I rinse my silver cement with hot water and then 20% dilute sulfuric acid to remove residual copper. Happy refining

@omegageek64 Год назад

@@spirit_wolf123 Thanks for the tip.

@johnlance1272 Год назад

Can you use regular tap water we are in shortage of distilled water in Tennessee too

@omegageek64 Год назад

No. Tap water generally contains chlorine.

@rockman531 Год назад

Hi Mike, Great video! Excellent silver recovery! One of the tantalum recycling companies offers pictures of the older tantalum capacitors . I wonder what the silver content is in those older ones?? Did you save the sludge to recover the tantalum bits? Take Care, Jim

@omegageek64 Год назад

Yep. I've been saving the tantalum.

@shaneyork300 Год назад

Great Video!! Hopefully the most common magnetic MLCCs are coming up this year to see how much silver you can get with them? Also what about using copper to drop the silver? Just wondering what your thoughts are on that?

@omegageek64 Год назад

I think the lye and sugar method produces purer silver, but I've done cementation on copper too.

@shaneyork300 Год назад

@@omegageek64 I did not know that! Thanks

@iamanempoweredone6064 Год назад

What I’m wondering is who buys tantalum besides the guy in Florida. I have over 100 lbs of tantalum silver capacitors. 1/2 tubular and the other ceramic.

@frankzahn7773 10 месяцев назад

Rubbing alcohol in a spray bottle will take the foam down in a heart beat. Try it.

@jordankennedy3298 Год назад

Before watching I will guess ~15gr of silver recovered. Now I will watch and see how close I was. Been saving these but they take a while to build up.

@kwinterburn Год назад

Just watching you trying to separate the silver chloride, what about a flocculating agent added to the first wash that would drop the solids then wash away, used in wine and beer making Bentonite I think is one

@johannesthe5th154 Год назад

Burn some dicyanoacetylene with oxygen. Then you have your surface of the sun temperature. Otherwise acetylene and oxygen should be able to (just barely) surpass the ~3020 C. Melting point of tantalum 👍

@mr.g-sez Год назад

and what do you do with the tantalum? is there a method to recover it? i mean is it even worth going for the tantalum?!

@GamerLoggos Год назад

Tantalum is pretty much valueless as a scrap metal. When processing these you are only after the silver.

@TheZamiboy Год назад

I was wondering the same but it seems like tantalum value is something like 150-160$/kilo.

@GamerLoggos Год назад

@@TheZamiboy Yeah its got value but the issue is purifying and smelting the stuff. Its super chemically resistant and it has a melting point just shy of 3,000°C. The expense of processing would likely offset any profit you might had made on selling it.

@TheZamiboy Год назад

@@GamerLoggos You are right about it. Also, i have no idea who would buy tantalum. It is not commonly traded metal like silver, gold and platinum group metals.

@iamanempoweredone6064 Год назад

Wear a dust mask. The ceramic dust can lead to cancer

@sddirt6840 6 месяцев назад

It helps if you know what the crap you're doing...