r/PreciousMetalRefining

Image 1 — 4th of July Silver Cell Run 🏃‍♂️
Image 2 — 4th of July Silver Cell Run 🏃‍♂️
Image 3 — 4th of July Silver Cell Run 🏃‍♂️
Image 4 — 4th of July Silver Cell Run 🏃‍♂️
Image 5 — 4th of July Silver Cell Run 🏃‍♂️
Image 6 — 4th of July Silver Cell Run 🏃‍♂️
Image 7 — 4th of July Silver Cell Run 🏃‍♂️
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4th of July Silver Cell Run 🏃‍♂️

So I had some time off this 4th July weekend decided I wanted to run the Silver Cell. In the pass I really didn’t keep good notes on the whole process from making the electrolyte, to adding shot to the anode basket. So here’s what I have.

300g of silver.999 dissolved into electrolyte

550ml of distilled water

300ml of nitric acid

Total Hours to dissolve the silver 15hrs

Total yield of Silver Nitrate 750ml with about 100ml of loss fluids more than likely due to evaporation from the heat.

478g of silver shot to feed the Cell

Silver Cell Info:3QT =2.839 L

Voltage 3.50

Amps 2.54

Silver Cell Startup

7/4/26. 10:30pm

7/6/26 8:00am shut down left for work

7/6/26. 5:00pm start up

u/Then_Marionberry_259 — 3 hours ago
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Question for Experienced Refiners: Do You Prefer Acid Peroxide, Nitric Acid, or Reverse Electroplating for processing gold plated connectors?

I recently finished processing 1,500 grams of gold-plated telecom pins and used the cupric chloride (acid peroxide) process to dissolve the base metals before recovering the gold foils. It took forever to dissolve the pins…

I know there are several ways to tackle this, including nitric acid and reverse electroplating, and I'm curious what experienced refiners here prefer. If you've used more than one method, what are the biggest advantages and disadvantages you've found?

I documented the entire experiment in a 5 minute video in case anyone is interested in seeing my process from start to finish.

https://youtu.be/Z02j6FTaGIg

u/Spiritual-Process-96 — 6 hours ago
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Patte composant plaqué Or

Bonjour je possède 1,6 kg de pattes de composant plaqué or.

Je voudrais savoir quel pourcentage d'or je pourrais récupérer.

Est ce vendable en l'état ?

u/Grand_Quit_1477 — 1 day ago
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Gold in motherboards

​

Is this all gold in these motherboards??

It seems like quite a lot compared to the others I have ..

First timer. Learning the ropes as I go. Thanks for your help.

😘

u/Jaded_Catch2281 — 2 days ago
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Physical stores with nitric?

Hey everybody,

I’ve been ordering my nitric acid through USA Labs and they’ve been alright, but just ran out of nitric halfway through a gold fill refine and was wondering if anyone knows any national physical locations where I might be able to get some

reddit.com
u/EngineerinSquid — 2 days ago
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The ultimate beginner’s guide to refining scrap/sterling silver: From scrap/sterling to silver concrete to a poured bar

I didn't know this subreddit existed! Created my own subreddit and posted this to it, but when it recommended I repost it to this subreddit I immediately joined. I'm just posting a link here not because I don't want to post the full guide here, but because it kept getting removed by the filters on this subreddit. I'm sure guides equally as thorough probably exist here too, but I spent too much time making this guide to not have it seen. Just let me know if this isn't allowed - I'm not intending at too to plug the stupid subreddit I made, I'm only linking to it because the filter here keeps removing it. I promise it's a very safety-oriented guide with detailed instructions. If the mods here will allow me to make the full post here - I'd love to!

https://www.reddit.com/r/PMRefiners/s/jwxTVc1rR2

reddit.com
u/Then_Marionberry_259 — 2 days ago
▲ 54 r/PreciousMetalRefining+1 crossposts

First little 2oz Pirate Coin Pour from the silver cell!

Just harvested 25oz from the silver cell and decided to pour this little beauty!

Thinking of getting some additional molds. Any ideas?

u/EHMetals — 4 days ago
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Trace metals

Material is gold filled mixed. I'm getting close, 97% typically but the weird thing is the majority of the trace metals are silver. That doesn't make any sense to me since AG should turn to chloride in AR should it not? Copper would be understandable, but AG? Unless it is undissolved but that doesn't make any sense to me either. On the final nitric I usually am 50/50 with distilled water and have very little if any reaction. Any pointers?

reddit.com
u/Free_Ad_2664 — 6 days ago

Impurities or casting issues

Both pieces were refined via agcl precipitation and sugar/lye reduction. The left was melted in a propane foundry while the right was melted in a melt dish with map gas. Would the surface finish give any insight into purity concerns or is this a casting issue.

u/Early_Meal6945 — 6 days ago
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Question for the electronics scrappers

My company has been storing several hundred of these industrial lamp ballasts against a warranty claim. We’re about to toss them, and I thought I'd salvage what’s worth removing.

I’ve identified the copper in the inductors and transformers and pulled the gold contacts from the relay. Is there anything else worth messing with?

Thanks!!

u/SenorElPresident — 6 days ago
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Acceptable loss

Around what percent yield do you aim for when refining silver. I ran my first batch of sterling and had a 84% yield, I’m not sure if I lost silver during the sugar and lye reduction after decanting or what. Any advice would be appreciated.

reddit.com
u/Early_Meal6945 — 7 days ago
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Need help identifying

I found this bag of what I thought was silver shot at a yard sale. none of the tests make any sense the precious metal place also was confused. This is what the XRF says but doesn't seem heavy enough. What other materials would match this readout? It is a high end table top XRF not a handheld too.

u/Ashamed-Cheetah-3385 — 11 days ago
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Best way to get gold dust out of silt and sand when panning?

I’ve got a bucket of dirt/rocks that my uncle brought back from his trip to Alaska. After he passed I found it at his house and have taken up the task of panning it out.
Ive ran it all through a screen and gotten down to concentrates.
I’ve added Dawn to my pan to get the dust to settle but not sure how to get it separated from the silt and such.
I also have some mercury I found as well at my uncles but not sure how to get that to work properly.
I do have a schematic to build a tort that filter thru water to recollect mercury. So any advice on the amalgam method would be appreciated.

reddit.com
u/Nutlesswonder — 9 days ago
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Selective oxidation via h2o2 and h2so4

Not quite sure on the chemistry but I have heard copper can be selectively oxidized while leaving another metal (such as silver untouched). I was wondering if dilute sulfuric acid and 3% hydrogen peroxide could dissolve physical copper contamination while leaving silver alone. Is there any truth to this?

reddit.com
u/Early_Meal6945 — 11 days ago
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Best guess what this is??

Found this at a garage sale awhile back. Chat and Grok seem to think it is some kind of silver scrap.

Its non magnetic, uniformly matte gray, brittle in that it shatters when squeezed in my linesmans pliers, the pieces are all uniform matte gray when shattered, and the container feels heavy in that i initially thought lead or tungsten scrap. It doesn't scratch glass and it doesnt leave any marks or streaks on white paper.

Any guesses?

u/Then_Marionberry_259 — 12 days ago
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What do you think of these guys

I don’t know what they are for but some guy who works for the company can take the old ones.

Another dealer in town has been paying him 50.00 for the bag.

I melted one down

Gold plating

The rest is aluminum

I don’t do any chemical refining my self but I am trying to figure out what I could sell these for per pound.

u/NorthStarGold — 13 days ago