Process to produce barium and strontium ferrite

Details Process to produce barium and strontium ferrite Process to produce barium and strontium ferrite

1975-10-21

1977-05-24

Cooper, Jack

Compositions

Magnetic

Iron-oxygen compound containing

423594, C04B 3526

Patent

active

040254496

ABSTRACT:
A method to produce a magnetic barium or strontium ferrite comprising solubilizing an alkaline earth metal compound in an aqueous solution containing about 20 to about 60 weight percent alkali metal hydroxide. The resulting solution is heated to within the range of about 90.degree. to about 130.degree. C and thereafter admixed with a sufficient amount of a soluble iron compound to form a magnetic precipitate. A crystalline, magnetic ferrite is formed by heating the precipitate to within the range of about 800.degree. to about 1500.degree. C.

REFERENCES:
patent: 3596350 (1971-08-01), Steingrover
patent: 3629118 (1971-12-01), Isserlis
patent: 3634254 (1972-01-01), Micheli
patent: 3810973 (1974-05-01), Arendt et al.
patent: 3830743 (1974-08-01), Schlaudt et al.
patent: 3855374 (1974-12-01), Brailowsky

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