Pre-leaching or reduction treatment in the beneficiation of tita

Details Pre-leaching or reduction treatment in the beneficiation of tita Pre-leaching or reduction treatment in the beneficiation of tita

1974-09-10

1976-07-06

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 21, 75101R, C22B 100

Patent

active

039679543

ABSTRACT:
The purity of titanium dioxide obtained by the acid leaching of a titaniferous iron ore, such as ilmenite, is improved by heating the ore prior to acid leaching with a reducing agent mixture of (a) a carbonaceous reducing agent and/or hydrogen and (b) sulfur to convert and lower the ferric oxide contaminant content of the ore to acid-soluble ferrous oxide and ferrous sulfide.

REFERENCES:
patent: 3450523 (1969-06-01), Socolescu
patent: 3457037 (1969-07-01), Aramendia
patent: 3649243 (1972-03-01), Williams
patent: 3660029 (1972-05-01), Naguib
patent: 3677740 (1972-07-01), Williams
patent: 3753686 (1973-08-01), Wilder
patent: 3764651 (1973-10-01), Henkel
patent: 3803287 (1974-04-01), Fukushima

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