Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1981-06-29
1982-06-01
Hearn, Brian E.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
423 74, 423149, C22B 108, C22B 110
Patent
active
043326153
ABSTRACT:
Titaniferous ore is beneficiated to essentially pure titanium dioxide use in the production of titanium dioxide pigments by continuously chlorinating, in the presence of carbon and at high temperature, the ore in a first reactor wherein the iron content is maintained at about 3.5%, by weight, continuously passing the beneficiate-carbon mixture to a second reactor wherein the ratio of the diameters of the first reactor and the second reactor is in the range of 10:1 and wherein the beneficiate-carbon mixture is maintained at an iron content of about 0.1 to 1%, by weight, said beneficiate being continuously chlorinated while continuously removing the beneficiate and coke from the second reactor and continuously separating the product therefrom.
REFERENCES:
patent: 2657976 (1953-11-01), Rowe
patent: 3105736 (1963-10-01), Groves
patent: 3144303 (1964-08-01), Engelmann
patent: 4085189 (1978-04-01), Dunn
Hearn Brian E.
Titanium Technology (Australia) Ltd.
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