Chlorine treatment of titaniferous ores

Details Chlorine treatment of titaniferous ores Chlorine treatment of titaniferous ores

1974-03-13

1976-04-13

Stern, Edward

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423148, 423149, 423610, C01G 2304, C01G 4910

Patent

active

039504891

ABSTRACT:
Artificial rutile of high TiO.sub.2 grade is produced by chlorine treatment of titaniferous ore such as ilmenite which comprises a combination of (1) a pretreatment step in which the ore is oxidized by roasting at a temperature below the sintering temperature thereof thereby to activate the ore, (2) a chloridization step in which the pretreated ore is subjected to a chlorine treatment in a fluidized bed chloridization furnace thereby to chloridize and remove selectively iron oxides within the ore without the formation of TiCl.sub.4, and (3) an aftertreatment step which comprises subjecting the ore to magnetic separation with a magnetic field of at least 20,000 gauses and further treatments thereafter, as necessary, such as a wet table treatment and electrostatic separation at from 5,000 to 30,000 volts.

REFERENCES:
patent: 2183365 (1939-12-01), Booge
patent: 2961298 (1960-11-01), Tikkanen
patent: 3112178 (1963-11-01), Judd
patent: 3291599 (1966-12-01), Reeves
patent: 3428427 (1969-02-01), Raicevic
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patent: 3699206 (1972-10-01), Dunn, Jr.
patent: 3784670 (1974-01-01), Yamada et al.
patent: 3803287 (1974-04-01), Fukushima et al.

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