C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/152
C22B 1/00 (2006.01) C22B 34/12 (2006.01)
Patent
CA 1117766
ABSTRACT OF THE DISCLOSURE: Invention Patent of "PROCESS FOR BENEFICIATION OF TITANIUM ORES" which basically consists of the removal of impurities contained in titanium ores, in which such impurities appear as oxides and cannot be eliminated by conventional mechanical processes for ore concentration. The process includes scrubbing, desliming; electromagnetic separation of the thick fraction for the removal of magnetite and decrease of the iron content, grinding of the non-magnetic fraction and its flotation for removal of part of the phosphates, calcining and reduction of the concentrate and both magnetic and electro- static separation. The latter is carried out in stages which eliminate the impurities and make it possible to obtain a pre-concentrate, which undergoes another electrostatic separa- tion in order to obtain a final concentrate with a high TiO2 content and a middling concentrate which is recycled to the system.
313820
Jardim Paixao Jose Marcio
Magalhaes Gustavo
Companhia Vale Do Rio Doce
Robic Robic & Associes/associates
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