Abstract：TiO₂-barite pigments were prepared through mechano-chemistry method taking barite powders as raw materials. By comparing the dry and wet process obtained TiO₂-barite composite pigments, dry preparation was determined. The dry preparation of TiO₂-barite pigment process conditions impact on the properties was focused. The results show that the optimum technical conditions are that the recombination time is 1.5 h, the TiO₂ content is 40%, the mass ratio of ball to powder is 4:1. Under these conditions, the hiding power of TiO₂-barite pigments can reach more than 80% of TiO₂ powders and the coating effect is best.

Keywords：barite-TiO₂ pigment; mechano-chemistry method; hiding power