NOBLE METAL EXTRACTION METHOD Russian patent published in 1996 - IPC

Abstract SU 1598459 A1

FIELD: hydraulic metallurgy. SUBSTANCE: method involves introducing 5-15 pellets (about 2-5 g) of intermetallic lead-sodium compound, preferably Na₄Pb, into solution containing 0.02-0.2 mcg/ml of gold, platinum or palladium, and hydrochloric acid and sodium chloride; mixing and filtering precipitant containing 20 mcg of metal, with solution being free of metal. EFFECT: increased extraction extent, simplified process and reduced toxicity of process. 1 tbl

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SU 1 598 459 A1

Authors

Styrkas A.D.

Tikhomirova V.I.

Dates

1996-03-27—Published

1988-12-27—Filed