Treating refractory gold ores via oxygen-enriched roasting

Details Treating refractory gold ores via oxygen-enriched roasting Treating refractory gold ores via oxygen-enriched roasting

1988-06-03

1990-04-24

Stoll, Robert L.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

423 29, 423 30, 423 31, 204109, C22B 1100

Patent

active

049197150

ABSTRACT:
Gold-containing ores, having refractory sulfidic matter or a combination of refractory sulfidic matter and refractory carbonaceous matter, are processed to recover their gold values. The process uses an ore roasting procedure that utilizes a two-state, fluidized bed roaster. The process also employs a pure oxygen atmosphere during roasting. A carbon-in-leach step is desirably used to extract gold values from the roasted ore.

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Grant, Julius, Hackh's Chemical Dictionary, 4th Ed. (1984) p. 585.

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