C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/18 (2006.01) C22B 3/16 (2006.01) C22B 23/00 (2006.01)
Patent
CA 2402456
A process for leaching an ore that contains nickel and magnesium includes mixing a microorganism that is capable of producing an organic acid, a nutrient, and an ore that contains nickel and magnesium for a period of time to dissolve the nickel and form a solution containing a nickel salt and a magnesium salt, separating the nickel from the magnesium in the salt solution. The organic acid is preferably oxalic acid, citric acid, humic acid or mixtures thereof.
L'invention concerne un procédé de lixiviation de minerai contenant du nickel et du magnésium. Le procédé comporte les étapes consistant à mélanger un micro-organisme capable de produire un acide organique, une substance nutritive et un minerai contenant du nickel et du magnésium pendant une durée donnée afin de dissoudre le nickel et de former une solution contenant un sel de nickel et un sel de magnésium ; et à séparer le nickel du magnésium dans la solution saline.
Duyvesteyn Willem P. C.
Liu Houyuan
Bhp Minerals International Inc.
Sim & Mcburney
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