Is there an alternative to sulfuric acid for lead precipitation

[Watts1027]

Off-topic I can’t figure out how to put a damn message on this forum so I refined some 925 Sterling with distilled water nitric acid and I did this several times using copper to precipitate out the silver but for some reason I cannot get this shit to melt for anything and I’m using mapp gas any ideas on what’s going on

 

[FrugalRefiner]

Off-topic I can’t figure out how to put a damn message on this forum so I refined some 925 Sterling with distilled water nitric acid and I did this several times using copper to precipitate out the silver but for some reason I cannot get this shit to melt for anything and I’m using mapp gas any ideas on what’s going on

First, try to find a way to express yourself without the need for profanity/vulgarity. It's just not needed.

I'm not sure what you mean by your difficulty in putting a message on this forum. You've managed to make a post, so I'm not sure what you're not able to do.

Refining silver by dissolving with nitric acid and distilled water is one issue. Melting the resulting silver cement is another. If you're having trouble melting silver cement, you probably need to add insulation around your melting dish. You need to be able to put heat into your melt faster than it escapes from the metal and the dish to be successful.

Dave

 

[FilthyMidasJoe]

My first choice is having a system where you perform recovery of gold then refining of gold. In the recovery stage, the solution is filtered till crystal clear, dropped with Ferrous Sulphate, and the powder washed in 50/50 HCl and water.

You can HCL wash Silver out of your powder. Wash, pour off, wash in water. Check for white residue in the water stage, then repeat the "acid then water" process until the wash water is completely clear. There's no need for Ammonia, it's just an additional stage that complicates things.

You can clean most gold to over 99% like this.

Hope that helps- any queries just ask away.

Jon

Hi, I'm wondering if you could please explain the recovery process of gold to me, Jon.

 

[Yggdrasil]

Hi, I'm wondering if you could please explain the recovery process of gold to me, Jon.

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