Effect of Calcination Temperature on Pigment Properties and Particle Size of Anatase Titanium Dioxide

The effect of calcination temperature on the achromic ability,whiteness,morphology and particle size of anatase titanium dioxide were studied in this paper,and the calcinated samples were characterized by Raman spectra,pigments properties test and SEM. The results show that with calcination temperature increasing from 915 ℃ to 970 ℃,the achromic ability of the sample gradually increases while its blue phase gradually decreases. The particles of titanium dioxide sinters under higher temperatures and the average particle size increases to 310 nm,with heterogeneous particle size distribution. The optimum calcination temperature is determined to be 935~945 ℃,under which the titanium dioxide owning narrow size distribution can be obtained with 260 nm of particle size,more than 1 500 of achromic ability and more than 4.0 of blue phase.