Filtration of solid-containing titanyl sulfate solutions

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

1975-11-05

1977-03-22

Stern, Edward

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423544, 423615, C01G 2300, C01G 2304

Patent

active

040137554

ABSTRACT:
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 about 1 to 16 bars to form a filter cake of a thickness of about 10 to 35 mm. The filter cake is washed with about 0.1 to 0.5 m.sup.3 of water per m.sup.3 of filtrate, the wash water is passed through the filter cake at a flow rate of about 0.1 to 1.2 m/h under a pressure of about 1 to 16 bars, and the filter cake is then squeezed to a solid content of about 50 to 70% by weight.

REFERENCES:
patent: 2287861 (1942-06-01), Bousquet et al.
Book "Titanium" by Jelks Barksdale, 2nd Ed., 1966, pp. 214-215, The Ronald Press Co., New York.
Book "Industrial Filtration of Liquids", 2nd Ed., 1971, by D. B. Purchas, pp. 223, 225 and 227, Leonard Hill Books, London.

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