TREATING REFRACTORY GOLD ORES VIA OXYGEN ENRICHED ROASTING

摘要

ABSTRACTGold-containing ores, having refractory sulfidic matter or acombination of refractory sulfidic matter and refractorycarbonaceous matter, are processed to recover their gold values.The process uses an ore roasting procedure that utilizes atwo-stage, fluidized bed roaster. The process also employs a pureoxygen atmosphere during roasting. A carbon-in-leach step isdesirably used to extract gold values from the roasted ore.