Method of producing very pure magnesium oxide

Details Method of producing very pure magnesium oxide Method of producing very pure magnesium oxide

1983-08-29

1985-04-02

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423165, 423175, 423431, 423470, 423497, 423637, C01F 1104

Patent

active

045086907

ABSTRACT:
Very pure magnesium oxide is obtained from ore containing magnesium, more particularly ore containing magnesium carbonate, by calcining the ore and leaching the resulting magnesium oxide with carbon dioxide and calcium chloride solution to produce magnesium chloride solution. Carbon dioxide and ammonia are added, so as to precipitate magnesium carbonate trihydrate, which is decomposed to magnesium oxide.

REFERENCES:
patent: 1838587 (1931-12-01), Sperr
patent: 2400360 (1946-05-01), MacMullin et al.
patent: 2941860 (1960-06-01), Annis
Hackh's Chemical Dictionary, Fourth Edition, McGraw Hill Book Co. (1969), p. 401.
Kirk Othmer, Encyclopedia of Chemical Technology, Second Edition, vol. 12, pp. 711, 712 (1967), Interscience Publishers.

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