C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/00 (2006.01) C22B 3/12 (2006.01) C22B 3/44 (2006.01) C25C 1/20 (2006.01)
Patent
CA 2617415
Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes employ the use of low molecular oxygen levels in at least one of the thiosulfate leach solution and the pregnant thiosulfate leach solution to inhibit thiosulfate decomposition.
On présente des procédés permettant de récupérer les métaux précieux contenus dans des matières réfractaires au moyen de lixiviants de thiosulfate. Les procédés font appel à l'utilisation de faibles niveaux d'oxygène moléculaire dans au moins une des solutions de lixiviation de thiosulfate et de la liqueur-mère de la solution de lixiviation de thiosulfate pour inhiber la décomposition du thiosulfate.
Fleming Christopher Andrew
Hackl Ralph Peter
Ji Jinxing
West-Sells Paul George
Mbm Intellectual Property Law Llp
Placer Dome Technical Services Limited
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