Process for producing magnesium

Details Process for producing magnesium Process for producing magnesium

C - Chemistry, Metallurgy

22

B

53/262

C22B 26/22 (2006.01) C22B 4/00 (2006.01) C22B 4/02 (2006.01) C22B 5/10 (2006.01)

Patent

CA 1232140

A B S T R A C T PROCESS FOR PRODUCING MAGNESIUM Magnesium is produced by carbothermic conversion of magnesia in a process which comprises effecting the reaction in the presence of a liquid slag comprising oxides or mixed oxides and carbides of magnesium, calcium and aluminium in relative weight proportions, calculated as atomic metal:metal ratios, which by continued introduction of appropriate feedstock into the reactor are being kept within the following ranges (i) Mg:Ca from 0.28:1 to 1.34:1 (ii) Al:Mg from 0.79:1 to 3.16:1 (iii)Ca:Al from 0.48:1 to 1.50:1 under the proviso that the total amount gramatom aluminium is less than 51 % of the total amount gramatoms aluminium, calcium and magnesium contained in the slag.

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