Method for manufacturing lepidocrocite

Details Method for manufacturing lepidocrocite Method for manufacturing lepidocrocite

1987-01-20

1988-05-31

Garvin, Patrick P.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

252 6256, C01G 4906

Patent

active

047480173

ABSTRACT:
Lepidocrocite suitable for obtaining excellent magnetic powders and magnetic recording media is manufactured by oxidizing an aqueous suspension of ferrous hydroxide obtained from a ferrous salt and an alkali by blowing an amount of an oxygen-containing gas into the suspension, in which the blowing amount of the oxygen-containing gas is appropriately controlled in three steps, according to three steps of the oxidation reaction of the ferrous hydroxide. In a preferred embodiment, average oxygen absorption rates in the three oxidization steps are defined and the blowing of the oxygen-containing gas is controlled thereby.

REFERENCES:
patent: 2560971 (1951-07-01), Martin
patent: 3082067 (1963-03-01), Huna
patent: 3904540 (1975-09-01), Bennetch et al.
patent: 4061726 (1977-12-01), Ohlinger et al.
patent: 4061727 (1977-12-01), Vaeth et al.
patent: 4086174 (1978-04-01), Bennetch
patent: 4176172 (1979-11-01), Bennetch et al.
patent: 4221776 (1980-09-01), Autzen et al.
patent: 4396596 (1983-08-01), Ogisu et al.
patent: 4464352 (1984-08-01), Autzen et al.
patent: 4497723 (1985-02-01), Ohlinger et al.

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