Process for the production of coarse, scrubbing aggregates of ti

Details Process for the production of coarse, scrubbing aggregates of ti Process for the production of coarse, scrubbing aggregates of ti

1987-09-21

1988-11-15

Stoll, Robert L.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 76, 423 85, 501134, C01G 2308

Patent

active

047848413

ABSTRACT:
A process for the production of coarse scrubbing aggregates of TiO.sub.2 particles by vapor phase oxidation of titanium tetrachloride. The particle aggregates of sizes above 0.15 mm are separated from the TiO.sub.2 fines by wet screening on a moving screen, calcined and returned to the process. In a preferred embodiment of the process, the titanium dioxide prior to calcination is admixed with 0.01 to 0.3% by weight alkaline hydroxides (related to anhydrous TiO.sub.2), hard particle aggregates of sizes between 0.2 to 2.0 mm being generated that are returned to the hot reaction mixture and used for the prevention of deposit formation on the surfaces of the heat exchanger.
The process can be carried through in such a way that the quantities of coarse scrubbing TiO.sub.2 aggregates per unit of time consumed by abrasion and newly formed by sintering are equal, their percentages in recycling TiO.sub.2 thus remaining constant which simplifies the TiO.sub.2 production process.

REFERENCES:
patent: 2721626 (1955-10-01), Rick
patent: 2899278 (1959-08-01), Lewis
patent: 3310377 (1967-03-01), Stern et al.
patent: 3361525 (1968-01-01), De Rycke et al.
patent: 4569387 (1986-02-01), Hartmann et al.
patent: 4633935 (1987-01-01), Hartmann et al.
Perry's Chemical Engineers' Handbook, 6th Ed., Perry McGraw Hill, N.Y., 1973, pp. 23-13-15.

Affiliated with

Also associated with

Rating

Process for the production of coarse, scrubbing aggregates of ti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of coarse, scrubbing aggregates of ti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of coarse, scrubbing aggregates of ti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1102714