Method for production of magnesium chloride

Details Method for production of magnesium chloride Method for production of magnesium chloride

1990-04-17

1992-05-12

Niebling, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423163, 423497, 423498, C01F 532

Patent

active

051125846

ABSTRACT:
Method for production of magnesium chloride, to be used for production of magnesium, by leaching of magnesite in hydrochloric acid. A two-stage leaching process is used where in a first reactor magnesite lumps are dissolved in hydrochloric acid. The magnesium chloride containing solution is led to a second reactor, where finely ground magnesite or hydrochloric acid is added to obtain approximate equivalence between magnesium and chlorine. To precipitate the impurities an excess of magnesium oxide or magnesium hydroxide is added in one or several purification stages.

REFERENCES:
patent: 2288610 (1942-07-01), Dean
patent: 2398493 (1946-04-01), Butt et al.
patent: 2473534 (1949-06-01), Lloyd
patent: 3479135 (1969-11-01), Pray et al.
patent: 3980753 (1976-09-01), Grill et al.
patent: 4100254 (1978-07-01), Grohmann et al.
Bailar, J. C. et al, "Chemistry" Academic Press, New York, 1978, pp. 419-420.

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