Process for removing chemisorbed and interstitial chlorine and chlorides from a hot titanium dioxide beneficiate-carbon mixture

摘要

This invention relates to a process for removing hydrogen chloride, chlorine, chlorides, oxychlorides and metal chlorides from a beneficiate produced by contacting a titaniferous ore with chlorine at high temperatures preferably in the presence of carbon wherein the beneficiate mixed with carbon is contacted at temperatures of about 1000 DEG C. with steam, moist air or moist inert gas. The beneficiate which is essentially titanium dioxide is useful as a starting material for the manufacture of titanium dioxide pigments.