May 6, 2025 – In the realm of titanium dioxide manufacturing, Chemours Chemical (Tianjin) Co., Ltd. consistently stands at the forefront of the industry, thanks to its cutting – edge technologies and stringent quality control measures. The company’s titanium dioxide production process is a marvel of precision and complexity, with every step embodying technical ingenuity and a dedication to excellence.
The production of titanium dioxide commences with the acidolysis process, where concentrated sulfuric acid reacts vigorously with titanium ore to produce soluble titanium sulfates. This reaction demands extreme precision in terms of reaction conditions; even minor deviations in temperature, proportions, or other parameters can significantly impact subsequent production stages. Leveraging years of accumulated expertise and advanced automated control systems, Chemours’ professional team acts like a “smart brain” for the reactions, ensuring that each acidolysis process consistently yields high – quality results. After acidolysis, leaching, and reduction, the solution still contains stubborn impurities, including some colloidal compounds of silicon and aluminum, as well as prematurely hydrolyzed titanium. Here, Chemours’ self – developed special settling agents play a crucial role, enhancing the sedimentation and clarification process to effectively separate these impurities. During the residue washing stage, plate – and – frame filter presses operate efficiently, recovering a large amount of soluble titanium while properly disposing of insoluble impurities.
According to AsiaMB, the crystallization stage further showcases Chemours’ technical prowess. The freeze – crystallization method utilizes the evaporative heat absorption of refrigerants like liquid ammonia to lower the temperature of the chilled brine and separate crystal water, while the vacuum crystallization method relies on the principle of adiabatic evaporation of the solution to rapidly evaporate and cool the water. With these two crystallization methods at its disposal, the company can flexibly switch according to different product requirements, maximizing resource utilization. When filtering the titanium liquid, charcoal powder and other filter aids are used. Thanks to their strong adsorption capabilities, even tiny suspended impurities in the titanium liquid can be completely removed, achieving deep purification. The concentration process takes advantage of the reduced boiling point of the solution under vacuum conditions, increasing the concentration of the titanium liquid at low temperatures and preparing it for the hydrolysis stage.
Hydrolysis, the core of titanium dioxide production, determines the transformation of titanium dioxide from a liquid phase to a solid phase. Chemours strictly controls the heating rate, ensuring that the titanium liquid reacts as programmed to produce water and titanium dioxide particles. The hydrated titanium dioxide obtained after hydrolysis still contains various impurity ions. The company employs multiple washing steps, taking advantage of the concentration difference between the washing water and the impurity ions, to remove these impurities one by one. In the subsequent bleaching stage, the addition of concentrated sulfuric acid and aluminum powder reduces tetravalent titanium to trivalent titanium, further enhancing the washing effect.
During the salt treatment stage, Chemours adds different types of additives according to product characteristics to ensure a stable and controlled calcination process, endowing the finished titanium dioxide with excellent properties such as a stable crystal form, outstanding color performance, and good dispersibility. After a series of processes including high – temperature calcination, crushing, and classification, the final product is a titanium dioxide highly sought after in the market.
The titanium dioxide products manufactured by Chemours Chemical (Tianjin) Co., Ltd. are widely used in various industries such as coatings and plastics, earning the trust of numerous enterprises. With a significant domestic market share, these products are also exported overseas, winning acclaim from global customers for their superior quality. Looking ahead, Chemours Chemical (Tianjin) Co., Ltd. has stated that it will continue to increase investment in technological innovation and product research and development, continuously optimize the titanium dioxide production process, and inject strong impetus into the high – quality development of the industry.