Metallothermal process for the simultaneous production of...

Details Metallothermal process for the simultaneous production of... Metallothermal process for the simultaneous production of...

C - Chemistry, Metallurgy

22

B

53/259, 53/265

C22B 26/20 (2006.01)

Patent

CA 1115065

ABSTRACT OF THE DISCLOSURE The invention relates to a new process for the simultaneous production of magnesium and cement from calcined dolomite or calcium and cement from calcined lime. According to the invention calcined dolomite or calcined lime is reduced under a pressure lower than 10 torr and at a temperature of 1300 to 1600 °C with a reducing agent containing silicon and aluminium in a weight ratio of 4:1 to 1:1, wherein the total amount of silicon and aluminium comprises 50 to 100 % by weight. 100 to 200 parts by weight of the reducing agent are applied to convert 600 to 800 parts by weight of calcined dolomite or 700 to 1000 parts by weight of calcined lime. In contrast to the known procedures, the new method according to the invention provides cement as by-product instead of a useless slag.

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