Industrial process of preparing magnesia of high purity

Details Industrial process of preparing magnesia of high purity Industrial process of preparing magnesia of high purity

1976-11-18

1978-07-11

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423164, 423166, 423497, 423555, C01F 506

Patent

active

041002547

ABSTRACT:
In an industrial process of preparing high-purity magnesia from an impure magnesium-containing starting material, wherein the starting material is dissolved in HCl and the resultant acidic solution is subjected to a multistep treatment for precipitating the impurities out of the solution, the precipitate is separated from the residual purified magnesium chloride solution, and the magnesium chloride is thermally decomposed to obtain magnesia, the purified magnesium chloride solution is first concentrated and sulfate ions are then added thereto to precipitate calcium ions from the concentrated solution as calcium sulfate.

REFERENCES:
patent: 1090125 (1914-03-01), Graves et al.
patent: 3341290 (1967-09-01), Bornemann et al.
patent: 3980753 (1976-09-01), Grill et al.
Sienko et al., Chemistry, Second Ed., (1961), McGraw-Hill Book Co., Inc., pp. 344-346.

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