Method of producing magnesium by the metallothermic...

Details Method of producing magnesium by the metallothermic... Method of producing magnesium by the metallothermic...

C - Chemistry, Metallurgy

22

B

53/266

C22B 26/22 (2006.01) C22B 4/00 (2006.01) C22B 5/04 (2006.01) C22B 9/22 (2006.01)

Patent

CA 1332789

Magnesium is produced by the metallothermic reduction of MgO in a molten slag bath comprised of MgO, Al2O3 and CaO together with oxide formed from the reducing metal. The composition of the slag is controlled during at least a first stage of the reduction so that it is wholly within the periclased region of its phase diagram and, at least in the surface region, has a substantially constant liquidus temperature. The surface region of the slag is maintained by direct heating (e.g. by a plasma) at or close to the liquidus temperature.

571643

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