Using low concentration industrial titanyl sulfate solution as raw material, rutile titanium white pigment was prepared via the self-seeded thermal hydrolysis sulfate process. The effects of pre-adding water, feeding rate and aging time on the particle morphologies, particle size distribution and pigment properties of rutile titanium dioxide white pigment were investigated. The as-prepared samples were characterized by particle size distribution test, SEM, XPS, TEM and pigment properties test. The results showed that the optimal hydrolysis operating conditions was the pre-adding water ratio of 23 % of, the feeding rate of 8.7 r/min, and the aging time was of 28 min. The obtained rutile titanium white pigment was with suitable particle size, narrow particle size distribution and good pigment properties. The effects order on the pigment performances from large to small was the pre-adding water volume ratio, the feeding rate and the aging time.

Rutile titanium dioxide pigment production from low concentration industrial TiOSO<sub>4</sub> solution

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Rutile titanium dioxide pigment production from low concentration industrial TiOSO4 solution

Rutile titanium dioxide pigment production from low concentration industrial TiOSO₄ solution