Stripping silver from copper

Thomas:

There may be some ways to electrolytically strip silver. Some Googling revealed some patents and that Technic seems to have something. See:

Pittsburgh Pete

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reverse current in hot NaCN solution.

"beavith" skrev i en meddelelse news: snipped-for-privacy@4ax.com...

Oh... I would like to avoid cyanides too. Forgot to mention. However - None of us are familiar with cyanides and our facilities aren't geared to handle such chemicals. But thanks for the reply anyway.

Best regards Thomas Demant

its really not a big deal. you shouldn't panic. you'd need some minor exhaust ventilation and the ability to batch treat any wastewater with bleach at an alkaline pH to a measurable ORP. you'd collect the Ag as AgCl as a recoverable sludge, and discharge salt water. Personal protective equipment needed would be rubber/neoprene gloves. that's it.

right. and you'd also need a small amount of rectified DC power.

be careful about proprietary strippers. they could be some pretty funky chemistry (read that: dangerous) too.

Have a look at the process outlined at:

Sounds strange and slow, if working at all. However, thank you for your input.

Thanks. I'm going having a closer look on that one to see if it's possible to use cyanides.

Must be the reason their're shipped along with an MSDS :-)