Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1993-04-15
1994-05-03
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75741, C01G 314
Patent
active
053083814
ABSTRACT:
Gold and silver are extracted from their elemental state or from complex ores and alloys by leaching them with a solution containing ammonia, ammonium salts and one or more oxidants. The process is particularly effective for refractory gold ores including sulfide and carbonaceous ores.
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Han Kenneth N.
Meng Xinghui
Presta Frank P.
Rosenberg Peter D.
South Dakota School of Mines & Techology
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