Chlorination process titanium dioxide primary product pre-dispersion method

• Main Authors: XIAO YONGLI, GAN WENJUN, LIU JIA, LIU QI, LUO JING
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

The pre-dispersing method for the chlorination process titanium dioxide primary product comprises the following steps: stirring and dispersing slurry prepared from the chlorination process titanium dioxide primary product, pumping the slurry into a sand mill for grinding and sieving, adding a pre-dispersing agent into an undersize product, and stirring to obtain pre-dispersed chlorination process titanium dioxide primary product slurry. The pre-dispersing agent used in the method does not contain nitrogen and phosphorus, and has no pollution to the environment. No acid or alkali needs to be added to adjust the pH value of the slurry in the dispersion process. Therefore, the chlorination process titanium dioxide primary product is ensured to have better dispersity and dispersion stability in the pre-dispersion process. 一种氯化法钛白初品预分散方法，包括：将氯化法钛白初品制备的浆料搅拌分散后泵送至砂磨机研磨并过筛，向筛下物中加入预分散剂并搅拌，得到预分散后的氯化法钛白初品浆料。本发明方法使用的预分散剂不含氮和磷，对环境无污染。分散过程不需要添加酸或碱调节浆料pH值。因此确保氯化法钛白初品在预分散过程中具有较好的分散性和分散稳定性。