Processes to recover and reconcentrate gold from its ores with m

Details Processes to recover and reconcentrate gold from its ores with m Processes to recover and reconcentrate gold from its ores with m

1990-11-26

1992-11-10

Lewis, Michael

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423DIG17, 75744, C22B 1100

Patent

active

051621053

ABSTRACT:
A variety of processes for recovering gold from gold ore are disclosed. Briefly, the methods include culturing at least one microorganism species capable of producing cyanide ion under conditions wherein the microorganism produces cyanide ion, thus forming a cyanide ion-containing culture; contacting the cyanide ion-containing culture with gold ore, causing production of gold ion-cyanide ion complexes and biosorption of said complexes to said cultures; and recovering gold from the culture. The invention may be practiced with a variety of microorganisms, including Chromobacterium violaceum and Chlorella vulgaris.

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