Abstract: A method for recovering a precious metal from a host material, comprises the steps of subjecting the host material to an oxidative pressure leach process, in the presence of a halide ion constituent which is reactive with the precious metal, and at a temperature sufficient to cause at least a portion of the precious metal to be extracted by a leach solution; and recovering the precious metal from the leach solution.
Type:
Grant
Filed:
April 28, 1999
Date of Patent:
November 13, 2001
Assignee:
International PGM Technologies Ltd
Inventors:
Christopher A. Fleming, David Dreisinger, P. Terry O'Kane