Process for extracting platinum group metals

Details Process for extracting platinum group metals Process for extracting platinum group metals

C - Chemistry, Metallurgy

22

B

C22B 3/04 (2006.01) C22B 1/02 (2006.01) C22B 3/00 (2006.01) C22B 11/08 (2006.01)

Patent

CA 2480229

PGMs can be extracted from a source material by heat-treating the source material to form a residue containing PGMs in a cyanide leachable condition and, thereafter, cyanide leaching the resudue using a solution containing cyanide to form a pregnant cyanide leach liquor containing PGMs in solution.

L'invention concerne les métaux du groupe du platine (PGMs), que l'on peut extraire d'un matériau source par traitement à la chaleur du matériau source pour former un résidu contenant des PGMs dans un état pouvant être lixivié par cyanuration, puis par lixiviation par cyanuration du résidu à l'aide d'une solution contenant du cyanure pour former une liqueur d'attaque de lixiviation par cyanuration contenant des PGMs en solution.

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