METHOD OF PRODUCING TITANIUM-CONTAINING PRODUCT Russian patent published in 2012 - IPC C01G23/04 C09C1/36 

FIELD: chemistry.

SUBSTANCE: invention can be used in production of titanium-containing pigments and sorbents. 5-20% ammonia solution is added to titanium sulphate solution with TiO₂ concentration of 50-100 g/l and pH 1.25-2.5 to achieve pH 0.2-0.5 with formation of a titanium hydroxide dispersion. The obtained dispersion is heated to 50-70°C, held for 1.0-1.5 hours and added to solution of a precipitation agent to form a titanium-containing precipitate in form of microgranules. The solution of precipitation agent used is 20-25% ammonia solution or 50-70% phosphoric acid solution. The formed titanium-containing precipitate is separated and washed with water to pH 2-5 and then thermally treated. Thermal treatment is carried out at temperature 60-100°C to obtain a titanium-containing sorbent or at temperature 680-820°C to obtain a titanium-containing pigment.

EFFECT: using an integrated process to obtain nanosized titanium-containing products in form of pigments with the following characteristics: whiteness 97,5-98,5%, reducing power 800-1200 arbitrary units, covering power 39,5-60,1 g/m², as well sorbents with Sr²⁺ sorption capacity of 48-155 mg/g.

3 cl, 11 ex