Acid/microwave leaching of titanium ore and then flotation...

Details Acid/microwave leaching of titanium ore and then flotation... Acid/microwave leaching of titanium ore and then flotation...

2002-10-08

2009-10-13

Bos, Steven (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

C423S083000

Reexamination Certificate

active

07601313

ABSTRACT:
A process of producing 99% plus titanium dioxide product by using conventional and microwave heating and leaching of the titanium compound feedstock using acid and oxidants. The solid residue from the leaching is used to produce the high quality titanium oxide by froth flotation. Hydrochloric acid can be recovered by multi-stage evaporation. The process can be modified to produce nano-size titanium dioxide product.

REFERENCES:
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patent: 3803287 (1974-04-01), Fukushima et al.
patent: 3922164 (1975-11-01), Reid et al.
patent: 4097574 (1978-06-01), Auger et al.
patent: WO96/24555 (1996-08-01), None

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