Method for manufacture of micaceous .alpha.-iron oxide

Details Method for manufacture of micaceous .alpha.-iron oxide Method for manufacture of micaceous .alpha.-iron oxide

1975-04-25

1976-10-19

Peters, G. O.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423551, 106304, C01D 4902

Patent

active

039871568

ABSTRACT:
Ferric sulfate obtained by the oxidation of ferrous sulfate or ferric sulfate available in its original state is added to an alkali hydroxide at a ratio such that the amount of said alkali hydroxide will be in excess of its stoichiometric proportion, so as to form a pasty substance. Then, this pasty substance is subjected to a hydrothermal treatment. From the resultant product of the treatment, there are obtained micaceous .alpha.-iron oxide crystals and aqueous solutions of sodium sulfate and alkali hydroxide.

REFERENCES:
patent: 2558302 (1951-06-01), Marcot et al.
patent: 2696426 (1954-12-01), Marcot
patent: 3706531 (1972-12-01), Cozza et al.

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