Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub

Details Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub

1991-11-19

1993-02-16

Morris, Theodore

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 82, 423 83, 423 85, 423 86, 423151, 423594, C01G 23047

Patent

active

051869209

ABSTRACT:
The iron content of the TiO.sub.2 -containing precursor is subjected to a direct reduction to effect a metallization of at least 90%. The reduced product is separated into magnetic and nonmagnetic fractions by magnetic separation. To oxidize the metallic iron, the magnetic fraction is subjected to an oxidation in an acid medium with agitation at a pH value below 2, under a pressure of 12 to 24 bars, and at a temperature from 150.degree. to 210.degree. C. with a supply of an oxygen-containing gas that contains at least 90% oxygen. When the suspension has been pressure-relieved, the hematite which has been formed is separated from the TiO.sub.2 concentrate.

REFERENCES:
patent: 1831852 (1931-11-01), Farup
patent: 3112178 (1963-11-01), Judd
patent: 3457037 (1969-06-01), Aramendia et al.
patent: 3765868 (1973-11-01), Moklebust
patent: 3816099 (1974-06-01), Stewart et al.
patent: 4085190 (1978-04-01), Shiah
patent: 4089675 (1978-05-01), Preston et al.
patent: 4098868 (1978-07-01), Tolley
patent: 4119696 (1978-10-01), Tolley
patent: 4172878 (1979-10-01), Tolley
patent: 4197276 (1980-08-01), Tolley et al.
patent: 4199552 (1980-04-01), Rado
patent: 4288416 (1981-09-01), Davis et al.

Affiliated with

Also associated with

Rating

Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2146857