Process for producing hydrated iron oxide having silicon and pho

Details Process for producing hydrated iron oxide having silicon and pho Process for producing hydrated iron oxide having silicon and pho

1980-04-24

1982-04-06

Cooper, Jack

Compositions

Magnetic

Iron-oxygen compound containing

252 6256, 252 6262, 423633, 423634, C01G 4906

Patent

active

043234640

ABSTRACT:
A hydrated iron oxide comprising a silicon component and a phosphorus component is produced by adding a silicate and a phosphate in an aqueous solution of a base and mixing it with an aqueous solution of a ferrous if necessary with a small amount of zinc ion and oxidizing it under controlling pH in a range of 5.5 to 7.5.

REFERENCES:
patent: 3931025 (1976-01-01), Woditsch et al.
patent: 4082905 (1978-04-01), Stephan
patent: 4136158 (1979-01-01), Okuda et al.
patent: 4201761 (1980-05-01), Seitzer

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