High purity TiO₂ was prepared by authigenic seed thermal hydrolysis route from industrial low concentration titanyl sulfate solution via the short sulfate process. The hydrolysis conditions had important influences on the hydrolysis process. The appropriate induced water volume ratio and hydrolysis time were conducive to form appropriate quantity and quality of hydrolysis seeds, adjust and control the precipitation, crystal growth, particle growth and aggregation velocity for the hydrated TiO₂, which could obtain the hydrated TiO₂ with smaller average particle size and specific surface area. These effects were beneficial to reduce the adsorption of impurities, and improve the purity of TiO₂. The hydrolysis conditions had internal influencing relationship between them. The optimized hydrolysis conditions were the induced water volume ratio was of 60%, the hydrolysis time was of 120 min, and the high purity, monodisperse titanium dioxide over 99.98% content could be obtained.

以工业低浓度硫酸氧钛溶液为原料，通过短硫酸盐法，采用自生种子热水解法制备高纯度TiO ₂。水解条件对水解过程有重要影响。适当的诱导水体积比和水解时间有利于形成适当数量和质量的水解种子，调节和控制水合TiO ₂的沉淀、晶体生长、颗粒生长和聚集速度，可以获得更小的水合TiO ₂。平均粒径和比表面积。这些作用有利于减少杂质的吸附，提高TiO ₂的纯度. 水解条件之间存在内在的影响关系。优化的水解条件为诱导水体积比为60 %，水解时间为120 min，可获得含量99.98 %以上的高纯度、单分散二氧化钛。