C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/06 (2006.01) C22B 3/22 (2006.01) C22B 3/24 (2006.01)
Patent
CA 2520275
According to the present invention a process for recovering one or more platinum group metals (PGMs) from a source of one or more PGMs comprises the steps of (i) providing a particulated starting material in the form of a source of one or more PGMs, which source also includes non-PGM material; (ii) subjecting the starting material to mechanical separation to remove non-PGM material to provide an upgraded PGM material; (iii) subjecting the upgraded PGM material of step (ii) to leaching with a solution containing a source of chloride to form a solution of chloro complexes of one or more PGMs; and (iv) extraction of one or more PGMs from the solution of step (iii).
Blake Cassels & Graydon Llp
North-West University
LandOfFree
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