TITANIUM DIOXIDE, A PROCESS FOR ITS PRODUCTION AND ITS USE

摘要

TITANIUM DIOXIDE, A PROCESS FOR ITS PRODUCTION AND ITS USE A titanium dioxide composition useful as the opacifier agent for vitreous enamels and fusion enamels comprises TiO2 predominantly in the form of isometric primary particles from 0.5 to 5.0 .mu.m in size, which are aggregated to predominantly spherolithic particles 1 to 100 .mu.m in diameter, with a BET surface of 1 to 4.5m2/g and an apparent density of 0.2 to 1.3 kg/l, is prepared by subjecting titanium dioxide hydrate having a BET surface of from 50 to 500 m2/g to accelerated calcination at temperatures of 800 to 1600.degree.C.