C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
23/125, 23/270,
C01G 49/06 (2006.01) C01B 7/03 (2006.01) C01B 17/02 (2006.01) C01B 17/45 (2006.01) C01B 31/28 (2006.01) C01G 49/10 (2006.01) C22B 34/12 (2006.01)
Patent
CA 1085589
A B S T R A C T The invention relates to the recovery of chlorine values from iron chloride by-produced from the chlorination of a titaniferous material containing more than 5% by weight iron oxide, and particularly from the carbo-chlorination of ilmenite, which, for example, can be the first stage in the so-called chloride route to form titanium dioxide pigment. The iron chloride which may be ferric chloride or ferrous chloride is subjected to a combination of reduction and oxidation reactions. In the reduction reaction, ferric chloride is dechlorinated to ferrous chloride by a reducing agent suitable for producing a chloride compound for recycle to the chlorination/process or for sale and in the oxidation reaction ferrous chloride is oxidised to ferric oxide and ferric chloride, the ferric chloride being recycled to the reduction reaction. By this method the chlorine values are recovered from by-product iron chloride by a route which avoids the difficult reaction between ferric chloride and oxygen to produce chlorine and ferric oxide.
290744
Shackleton Charles E.e.
Turner John H.w.
George H. Riches And Associates
Mineral Process Licensing Corporation B.v.
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