Method of extraction of nickel and copper from the nodules...

Details Method of extraction of nickel and copper from the nodules... Method of extraction of nickel and copper from the nodules...

C - Chemistry, Metallurgy

22

B

53/289, 53/304,

C22B 3/00 (2006.01) C22B 3/08 (2006.01) C22B 47/00 (2006.01)

Patent

CA 1052584

Abstract of the Disclosure The method comprises the steps of crushing of the ore, neutralization by a mixture of water and sulphurio acid, introduction of a controlled quantity of sulphur dioxide gas at a pH value between 1.5 and 4 for promoting dissolution of nickel, copper and a desired quantity of manganese, leaching of the ore with sulphuric acid at a pH value between 1 and 3 for selectively dissolving the nickel and copper, separation of the solid and liquid phases, and separation of the metals contained in the liquid phase.

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