Manufacture of titanium dioxide pigment seed from a titanium sul

Details Manufacture of titanium dioxide pigment seed from a titanium sul Manufacture of titanium dioxide pigment seed from a titanium sul

1975-05-27

1978-02-14

Peters, G. O.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C01G 2306

Patent

active

040738779

ABSTRACT:
The application is concerned with a process for the manufacture of a titanium dioxide pigment from a titanium sulfate solution by hydrolysis in the presence of nuclei. The latter may be formed externally from any suitable source of titanium sulfate solution and preferably, but not exclusively, from a portion of the titanium sulfate solution used in forming the hydrous TiO.sub.2 ; the nuclei being prepared by mixing the titanium sulfate solution, from whatever source, simultaneously with an alkaline reacting solution and subsequently curing the mixture at elevated temperature. In the present application "titanium sulfate solution" is understood to be a solution which may also contain other substances besides titanium sulfate; and may be obtained, for example, by digestion of titaniferous ores or slags using sulfuric acid, followed by dissolution of the resulting digestion cake.

REFERENCES:
patent: RE18854 (1933-05-01), Blumenfeld
patent: 1758528 (1930-05-01), Mecklenberg
patent: 2564365 (1951-08-01), Kingsbury
patent: 3071439 (1963-01-01), Solomka
patent: 3501271 (1970-03-01), Twist et al.
patent: 3859212 (1975-01-01), Smalley
patent: 3898321 (1975-08-01), Marsh

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