Preparation of TiO.sub.2 and artificial rutile from sodium titan

Details Preparation of TiO.sub.2 and artificial rutile from sodium titan Preparation of TiO.sub.2 and artificial rutile from sodium titan

1974-08-14

1976-08-24

Stern, Edward

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423499, 423551, 423552, C01G 2308, C01D 304, C01D 500

Patent

active

039767612

ABSTRACT:
Pigment TiO.sub.2 is prepared from sodium titanate by mixing with sulfuric acid, calcining at from 600.degree. to above about 900.degree.C, thereafter quenching in water, dissolving out the soluble sodium sulfate and recovering TiO.sub.2. By operating at 900.degree.C and above, artificial rutile is obtained. Instead of sulfuric acid, other mineral acids, their anhydrides, ammonium and alkali metal acid salts of said acids and borax may be employed.

REFERENCES:
patent: 2801900 (1957-08-01), Benning et al.
patent: 3424555 (1969-01-01), von Bichowsky
Jelks Barksdale's Book "Titanium", Second Edition, 1966, p. 324, The Ronald Press Co., New York.
J. W. Mellor's "A Comprehensive Treatise on Inorganic and Theo. Chemistry", vol. 7, pp. 51, 52, Longmans, Green & Co., N.Y.

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