Details:

Personal Author:
Sandberg, R. G. (Richard G.) ; Huiatt, J. L. ;
Sandberg, R. G. (Richard G.) ; Huiatt, J. L. ; Less -
Corporate Authors:
.United States. Bureau of Mines. ;
Description:
"The Bureau of Mines investigated a hydrometallurgical procedure to recover gold, silver, and byproduct lead from a complex lead-zinc sulfide ore. A ferric chloride (fecl3) preleach, at 40 deg c in 6 h, extracted about 50 pct of the zinc and formed insoluble silver and lead chlorides. Subsequent acid thiourea leaching, for 1 to 3 h at 40 deg c, extracted about 85 pct of the gold and silver. Lead chloride was solubilized from the remaining residue with nacl brine solution at 55 deg c in 1 h. Lead metal was recovered from the brine solution in an electrolytic cell with an anion permselective membrane at a current efficiency of 95 pct and current density of 100 a/m2. Spent fecl3 leach solution was reoxidized in the anode compartment at a current efficiency between 75 and 95 pct." - NIOSHTIC-2 NIOSHTIC no. 10005114
Subject:
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Ferric Chloride.
Gold -- Metallurgy.
Leaching.
Lead -- Metallurgy.
Silver -- Metallurgy.
Sodium Chloride.

Document Type:
Report ;
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:7041fdeb5a5251c52962411cce5767392615b04c1ed0aa96ccb71260941b6591
File Type:

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