TITANIUM DIOXIDE PRODUCTION, AND METHODS OF CONTROLLING PARTICLE SIZE THEREOF

摘要

Disclosed is a method/system for the production of titanium dioxide particles. The titanium dioxide particles are produced by oxidizing titanium tetrachloride in the presence of an agent which includes ultrafine titanium dioxide particles, and optionally, the presence of a Group 1a metal compound. The presence of the agent, with or without the optional Group 1a metal compound, also serves to control the particle size of the produced titanium dioxide particles.

主权项

1. A method for producing titanium dioxide particles comprising:
a) introducing titanium tetrachloride, oxygen, and an agent to an oxidizer; wherein the agent comprises ultrafine titanium dioxide particles; and wherein the ultrafine titanium dioxide particles are in a form selected from the group consisting of anatase, rutile, amorphous, and combinations thereof; and b) oxidizing at least some of the titanium tetrachloride with at least some of the oxygen in the presence of the agent to form an oxidizer effluent comprising a titanium dioxide product having titanium dioxide particles.