C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/226
C22B 11/08 (2006.01)
Patent
CA 1215843
ABSTRACT A method is disclosed for leaching a gold ore which is refractory due to the presence of sulphide minerals of arsenic and antimony. The ground ore is leached with cyanide in a pipe reactor at a pressure of between 5 and 8 MPa. The terminal pH value of the pulp is controlled to be 10 or less than 10.
436091
Hendriks Leonard P.
Muir Colin W.a.
Consolidated Murchison Limited
Gowling Lafleur Henderson Llp
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