Aluminium extraction process

Details Aluminium extraction process Aluminium extraction process

C - Chemistry, Metallurgy

22

B

53/236

C22B 21/02 (2006.01)

Patent

CA 1076366

ABSTRACT The invention provides a process for recovering aluminium values from aluminium-containing minerals, such as oxides of aluminium and aluminosilicates. The process involves heating an intimate mixture of an aluminium-containing mineral and a solid carbonisable organic material, preferably a fibrous cellulosic material, so as to carbonise the organic material, and chlorinating the solid residue from the carbonisation step. The solid residue contains carbon in very finely divided form distributed throughout the aluminium-containing mineral, The surface area and reactivity of this carbon is much higher than that of powdered coal and the chlorination reaction thus takes place in a most efficient manner.

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