Recovery of titanium from titanium bearing materials

Details Recovery of titanium from titanium bearing materials Recovery of titanium from titanium bearing materials

2007-08-21

2007-08-21

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

C423S610000, C423S114000

Reexamination Certificate

active

10484240

ABSTRACT:
A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, if present, treating the solution to remove calcium and/or iron, precipitating out the aluminium as aluminium ammonium sulphate, hydrolysing the remaining titanyl sulphate solution and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.

REFERENCES:
patent: 2837426 (1958-06-01), Kamlet
patent: 2 109 356 (1983-06-01), None
patent: 96/10096 (1996-04-01), None
Abstract of SU 1490127, Jun. 30, 1989.

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