Recovery of titanium from perovskite using sulfuric acid leachin

Details Recovery of titanium from perovskite using sulfuric acid leachin Recovery of titanium from perovskite using sulfuric acid leachin

1984-08-27

1985-11-12

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423 85, 423 86, 423544, C01G 2300

Patent

active

045527300

ABSTRACT:
A method of recovering titanium from perovskite by leaching with a strong sulfuric acid solution is disclosed. The leaching produces a sulfate solution containing titanium and a calcium sulfate residue when the time and temperature of leaching are controlled as a function of the grind size of the perovskite and concentration of the sulfuric acid. The titanium-containing solution and the calcium sulfate residue are then separated. The titanium in the leach solution is precipitated by heating, as a mixture of titanium sulfates, which are then redissolved in water or dilute acid solution. Titanium dioxide may then be prepared by hydrolysis of the titanium in the resulting aqueous solution.

REFERENCES:
patent: 3760058 (1973-09-01), Langmesser et al.
patent: 4288416 (1981-09-01), Davis et al.
patent: 4321236 (1982-03-01), Stambaugh et al.

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