Filtration of solid-containing titanyl sulfate solutions

Details Filtration of solid-containing titanyl sulfate solutions Filtration of solid-containing titanyl sulfate solutions

C - Chemistry, Metallurgy

01

G

182/19, 23/85

C01G 23/00 (2006.01) B01D 36/00 (2006.01) C22B 34/12 (2006.01)

Patent

CA 1081620

ABSTRACT OF THE DISCLOSURE In the production of a solid-free solution of titanyl sulfate by digesting ilmenite or titanium slag with sulfuric acid, and filtering the resulting solid-containing solution of titanyl sulfate to separate the solids, the improvement which comprises filtering the solution under a pressure of from 1 to 16 bars to form a filter cake of a thickness of from 10 to 35 mm. The filter cake is washed with from 0.1 to 0.5 m3 of water per m3 of filtrate, the wash water is passed through the filter cake at a flow rate of from 0.1 to 1.2 m/h under a pressure of from 1 to 16 bars, and the filter cake is then squeezed to a solid content of from 50 to 70% by weight.

239557

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