METHOD OF HYDROMETALLURGIC GOLD EXTRACTION FROM THE GOLD-CONTAINING MATERIAL Russian patent published in 1995 - IPC

Abstract RU 2046150 C1

FIELD: gold-containing raw processing. SUBSTANCE: method involves the stage of material treatment with acid leaching solution containing thiourea and ferric ions. Solition for leaching has also complexing agent for ferric ions. Complexing agent can be taken from the group involving di- and tricarboxylic acids, phosphoric acid and its salts, thiocyanates, fluorides, fluosilicic acid and its salts (fluosilicates), ethylenediaminetetraacetic acid (EDTA) and its salts, and mixtures of compounds indicated above. EFFECT: improved method of gold extraction. 6 cl, 3 tbl

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RU 2 046 150 C1

Authors

Krehg Klinton Kenna[Au]

Dates

1995-10-20—Published

1991-02-19—Filed