Bioleaching of sulphide minerals

Details Bioleaching of sulphide minerals Bioleaching of sulphide minerals

C - Chemistry, Metallurgy

22

B

C22B 3/18 (2006.01) C22B 3/02 (2006.01) C22B 3/04 (2006.01)

Patent

CA 2381157

A method of bioleaching a slurry containing sulphide minerals which includes the step of supplying a feed gas containing in excess of 21% oxygen by volume, to the slurry, increases the rate of oxygen transfer from the gas to the liquid phase. Combined with the use of high temperatures between 50 °C and 100 °C and thermophile microorganisms the rate of sulphide mineral leaching is greatly enhanced.

La présente invention concerne un procédé de lixiviation biologique d'une suspension contenant des minéraux à sulfures qui consiste à alimenter la suspension avec un gaz contenant plus de 21 % d'oxygène en volume.

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