Pyrometallurgy: Roasting, Smelting, Refining & Electrowinning

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Getting gold,silver and platinum from black sands (2 replies and 1 comment)

(unknown)

6 years ago

(unknown) 6 years ago

Have been told there are ways to use certain chemicals to help break down black sands, then cook it and kiln it to make a Dore bead. Have sands with gold, silver and platinum but is very fine and is attached in the sand unless it is ground up.  Any help would be great! 

Mike

6 years ago

Mike 6 years ago

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Sounds like you are asking about fire assaying: http://www.mine-engineer.com/mining/assay2.htm  and https://redesign.911metallurgist.com/blog/fire-assay

If so you can get the equipment here:  https://redesign.911metallurgist.com/equipment/fire-assay-kit/

J

jtw@veritek.com

6 years ago

jtw@veritek.com 6 years ago

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I've experimented with bio leaching to convert the iron and liberate the gold.  My fire assays have gone from 4 ounces to 36 ounces gold.  Recovery of gold by chemical extraction is 0 ounces before due to the iron.  Recovery on 1Kg of bio treated black sand is underway.

 

(unknown)

6 years ago

What chemical do you use for the bio leaching process? You can give a call or text if you don't want to post to the world 307-272-9814. Have another guy says Clorox and table salt will pop open and break down the iron, but since you have something that works I would like to try it also.. thanks

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