Process for preparation of micaceous iron oxide

Details Process for preparation of micaceous iron oxide Process for preparation of micaceous iron oxide

1980-05-19

1981-09-15

Cooper, Jack

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423632, 106304, C01G 4906

Patent

active

042897467

ABSTRACT:
High purity hexagonal plate-like .alpha.-Fe.sub.2 O.sub.3, commonly called micaceous iron oxide, is prepared by a hydrothermal treatment of either magnetite or an iron ore, or an iron oxide, of which principal component is magnetite together with an oxidizer in an aqueous alkali solution. Main advantage of this process is a great decrease in the consumption of alkali. Pure magnetite for use in this process can be prepared economically by a hydrothermal treatment of an iron ore, or an oxide, of which principal component is an oxide of trivalent iron in an aqueous alkali solution together with a compound of divalent iron and/or metallic iron.

REFERENCES:
patent: T867010 (1969-10-01), Pearlman
patent: 2705188 (1955-03-01), Swaney
patent: 3987156 (1976-10-01), Nobuoka

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