Method for producing particulate titanium oxides

Details Method for producing particulate titanium oxides Method for producing particulate titanium oxides

C - Chemistry, Metallurgy

01

G

23/261

C01G 23/053 (2006.01)

Patent

CA 2019387

Method for Producing Particulate Titanium Oxides Abstract The invention relates to a method for the preparation of particulate pigmentary titanium dioxide. The method comprises reacting, in solution, a precursor titanium tetrahalide with sulfuric acid to produce an intermediate titanyl sulfate product. Following crystallization and recovery of this intermediate product from solution the crystallized intermediate is redissolved in an aqueous solvent medium and hydrolyzed at elevated temperatures to provide a particulate amorphous titanium dioxide intermediate product. After separation from the aqueous solvent medium, this intermediate product then is subjected to calcination at elevated temperatures to produce the desired particulate titanium dioxide end product.

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