Copper in my silver cement

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tensecondsdown
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Copper in my silver cement

Postby tensecondsdown » April 14th, 2018, 2:56 pm

Hi, I refined some gold by inquartation and that worked fine. I put a copper plate in the silver nitrate to cement the silver out. I think there was still some nitric acid in it but I read that it would not matter as it would just re dissolve the silver until it was used up then cement out fully. I rinsed the powder a bunch of times and dried it and the powder has a blue tinge to it so I don't thin I got all the copper out. Should I just rinse it some more or is there something I can use to dissolve just the copper? Thanks.


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Palladium
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Re: Copper in my silver cement

Postby Palladium » April 14th, 2018, 3:41 pm

If your going to use it for inquarting it won't matter that it has some copper mixed in.
What are you going to use it for?
The difference between stupidity and genius is that genius has its limits. Albert Einstein
1. Refining Precious Metal Wastes C.M. Hoke http://tinyurl.com/mfnyhs
(REV) (Free Download)
2. Get the (FREE) Gold Refining Forum Handbook VOL 1 here >> http://tinyurl.com/nyutnp
3. Get the (FREE) Gold Refining Forum Handbook VOL 2 (Final) here >> http://tinyurl.com/y9w5y73
4. Silver cell setup video here (FREE) >> https://tinyurl.com/jhzadse
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Topher_osAUrus
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Re: Copper in my silver cement

Postby Topher_osAUrus » April 14th, 2018, 9:40 pm

Blue tinge eh?

I like to use dilute sulfuric acid as a rinse (it has a liking for copper oxide [blue tinge] not silver) The blue tinge will be solvated, and leave pure silver. The blue rinse can be evaporated down and used as a copper cell electrolyte. When i do this, i only use 10 to 20% concentration of sulfuric acid.

tensecondsdown
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Re: Copper in my silver cement

Postby tensecondsdown » April 15th, 2018, 4:47 pm

Palladium wrote:If your going to use it for inquarting it won't matter that it has some copper mixed in.
What are you going to use it for?


I wanted to melt it back down to .999

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Palladium
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Re: Copper in my silver cement

Postby Palladium » April 15th, 2018, 10:14 pm

You won't get .999 by the cementation method. You need to melt it and run it through a silver cell.
The difference between stupidity and genius is that genius has its limits. Albert Einstein
1. Refining Precious Metal Wastes C.M. Hoke http://tinyurl.com/mfnyhs
(REV) (Free Download)
2. Get the (FREE) Gold Refining Forum Handbook VOL 1 here >> http://tinyurl.com/nyutnp
3. Get the (FREE) Gold Refining Forum Handbook VOL 2 (Final) here >> http://tinyurl.com/y9w5y73
4. Silver cell setup video here (FREE) >> https://tinyurl.com/jhzadse
ALL FREE-----ALL THE TIME


tensecondsdown
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Re: Copper in my silver cement

Postby tensecondsdown » April 17th, 2018, 3:00 pm

Topher_osAUrus wrote:Blue tinge eh?

I like to use dilute sulfuric acid as a rinse (it has a liking for copper oxide [blue tinge] not silver) The blue tinge will be solvated, and leave pure silver. The blue rinse can be evaporated down and used as a copper cell electrolyte. When i do this, i only use 10 to 20% concentration of sulfuric acid.


Awesome thanks, the sulfuric acid did the trick.

Topher_osAUrus
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Re: Copper in my silver cement

Postby Topher_osAUrus » April 24th, 2018, 9:09 pm

tensecondsdown wrote:
Awesome thanks, the sulfuric acid did the trick.


How did it look after the melt?

If the only copper that made it into the cement was oxidized and then eaten up by the sulfuric acid, i bet it was pretty darn pure and shined like a new dime.

But, palladium is right, for triple 9 plus, you need a silver cell.
Even if you dont needneed it, it is fascinating to watch


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