08252254 cites 285 patents.

The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by hot curing of the autoclave discharge slurry followed by decomposition of argentojarosite using strong acid consumers.

Title
Process for reduced alkali consumption in the recovery of silver
Application Number
11/761103
Publication Number
8252254 (B2)
Application Date
June 11, 2007
Publication Date
August 28, 2012
Inventor
Jacques McMullen
Oakville
CA
Peter D Kondos
Toronto
CA
Yeonuk Choi
Oakville
CA
Agent
Sheridan Ross P C
Assignee
Barrick Gold Corporation
CA
IPC
C01G 3/10
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