Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Preparing single metal
Patent
1996-01-26
1999-05-11
Phasge, Arun S.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Preparing single metal
205583, 205584, 205604, 205606, 205607, 205609, 423 24, 423 27, 423 99, 423109, 209165, 23293S, C22B1/00
Patent
active
059024747
ABSTRACT:
A process for the extraction of precious metals from a copper sulphide ore or concentrate, by treating a leach residue of the ore or concentrate, includes the steps of removing elemental sulphur from the leach residue to obtain a low sulphur residue and subjecting the low sulphur residue to an oxidative leach at elevated temperature and pressure to oxidize sulphur and precious metal compounds present in the low sulphur residue to produce a residue for the extraction of the precious metals therefrom.
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Cominco Engineering Services Ltd.
de Kock Elbie R.
Phasge Arun S,.
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