Preparation of anhydrous magnesium chloride

Chemistry of inorganic compounds – Halogen or compound thereof – Binary compound containing metal

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C01F 534

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active

042698162

ABSTRACT:
The invention relates to a process for the preparation of anhydrous magnesium chloride from magnesium carbonate preferably magnesium carbonate ores such as magnesite. The process comprises reacting solid magnesium carbonate pieces preferably screened ore in a packed bed reactor comprising the magnesium carbonate pieces with gaseous chlorine in the presence of carbon monoxide at a temperature above the melting point of magnesium chloride and below 1200.degree. C. The off-gas predominantly carbon dioxide is withdrawn from above the packed bed and molten anhydrous magnesium chloride is withdrawn from below the packed bed. The invention provides a process having low energy requirements which can be applied industrially on a continuous basis using simple apparatus.

REFERENCES:
patent: 1331257 (1920-02-01), Heap
patent: 1933499 (1933-10-01), Moschel
patent: 2355367 (1944-08-01), Cooper
patent: 2384479 (1945-09-01), Lepsoe
patent: 2567419 (1951-09-01), Bengston
patent: 3411880 (1968-11-01), Kent
Engineering and Mining Journal, Oct. 1943, pp. 61-67.

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