C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/370
C22B 3/00 (2006.01) C22B 11/08 (2006.01)
Patent
CA 1221842
ABSTRACT OF THE DISCLOSURE This invention relates to a process for the recovery of one or more of the metals gold, silver, copper, zinc, vanadium, germanium and cobalt from pyrite concentrate. The first step of the process comprises mixing pyrite concentrate with cyanide solvent so that the metals dissolve in the solvent. The solvent and pyrite slurry is then dewatered to yield pyrite free of the metals and a cyanide solvent containing the metals. The pyrite is separated from the cyanide solvent. A first stream of the cyanide solvent is recycled to the first step and a second stream of the cyanide solvent is passed through activated charcoal. The gold and some of the silver present in the solvent are adsorbed on the charcoal leaving the solvent barren in gold. At least one of the metals remaining in the solvent is extracted by means of ion exchange, leaving solvent and an eluate of cyanide waste. The cyanide waste is neutralized or destroyed and the solvent is recycled to the first step. The continuous nature of the process minimizes the quantity of water required and the pyrite is almost completely separated into its useful components, with minimal waste.
455496
Coburn Arthur E.
Deal Roger
Bereskin & Parr
Helsco Metals Inc.
LandOfFree
Treatment of ores does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treatment of ores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of ores will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1297520