Production of magnetite from ferrous salt solutions

Details Production of magnetite from ferrous salt solutions Production of magnetite from ferrous salt solutions

C - Chemistry, Metallurgy

01

G

23/269

C01G 49/08 (2006.01) G11B 5/706 (2006.01)

Patent

CA 1111230

ABSTRACT OF THE DISCLOSURE A process for producing magnetite from ferrous sulphate or ferrous chloride solution includes heating the ferrous salt solution to a temperature above about 50°C., adding an ammonia compound to the solution to provide an ammonia to salt anion ratio of about the valency of the salt anion, and treating the solution with oxygen at a partial pressure in the range of from about 50 to about 170 kPa. The ammonia compound may be ammonia, ammonium hydroxide or ammonium carbonate.

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