Manufacture of magnesium hydroxide

Details Manufacture of magnesium hydroxide Manufacture of magnesium hydroxide

1982-11-16

1985-02-05

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

210665, 210667, 210681, 423155, C01F 522

Patent

active

044977816

ABSTRACT:
A process for making magnesium hydroxide which comprises treating brine with an adsorptive magnesium hydroxide whereby at least part of the boron ions contained in the brine are adsorbed on to the adsorptive magnesium hydroxide, the brine being mixed counter-currently with the adsorptive magnesium hydroxide in a series of stages such that at each stage the brine is successively contacted with adsorptive magnesium hydroxide from a succeeding stage and there is recovered from the final stage a brine of reduced boron ion content, reacting the brine of reduced boron ion content with alkali to precipitate a low boron magnesium hydroxide and recovering the low boron magnesium hydroxide.

REFERENCES:
patent: 2692816 (1954-10-01), Vettel et al.
patent: 2703748 (1955-03-01), Clarke et al.
patent: 2893840 (1959-07-01), Vettel et al.
patent: 3425804 (1969-02-01), Rastrelli
patent: 3787558 (1974-01-01), Briggs et al.
patent: 4035469 (1977-07-01), Richmond et al.
patent: 4229423 (1980-10-01), Housh et al.

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