Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1981-06-28
1983-06-21
Hearn, Brian E.
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
423 75, 423 79, 423149, 423613, 423633, 75 1TI, C01G 23047, C22B 100
Patent
active
043893910
ABSTRACT:
An improved method of beneficiating ilmenite using two chlorinators in order to oxidize by-product iron chlorides to chlorine in the vapor phase and eliminate the necessity of separating the chlorine from combustion gas by cryogenic methods comprising using a first stage which produces beneficiated ore, and, inter alia, carbon dioxide, iron chlorides, predominantly ferrous chloride, which are condensed to gain the separation from CO.sub.2 ; solid iron chlorides are fed to an oxidation zone in the void above the second stage beneficiator and reacted with oxygen; heat required for vaporization of the condensed chlorides is supplied in part by beneficiation within the second stage. The fluidized bed overflow of the second stage beneficiator is magnetically separated to separate practically pure T.sub.1 O.sub.2, useful as a starting material for T.sub.1 O.sub.2 pigment and a recycle stream of magnetic partially beneficiated ore.
REFERENCES:
patent: 2657976 (1953-11-01), Rowe
patent: 3105736 (1963-10-01), Groves
patent: 3144303 (1964-08-01), Engelmann
patent: 3865920 (1975-02-01), Dunn
patent: 3925057 (1975-12-01), Fukushima
patent: 4094954 (1978-06-01), Bonsack
patent: 4174381 (1979-11-01), Reeves
Abramo Samuel V.
Hearn Brian E.
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