Process for preparing a pigmentary titanium dioxide

Details Process for preparing a pigmentary titanium dioxide Process for preparing a pigmentary titanium dioxide

1986-01-21

1988-07-26

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423 82, 423 84, 423610, C01G 23047, C01G 23053

Patent

active

047599162

ABSTRACT:
A process for preparing pigmentary titanium dioxide by grinding and mixing a titanium-bearing material, such as sorelslag, with an alkali metal compound such as sodium hydroxide, and roasting the mixture. The roasted material is ground followed by washing and filtering. Thereafter, the solid residue is digested with hydrochloric acid. After removing the acid by filtration and washing the solid residue, the residue is calcined to provide a titanium dioxide pigment.

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