China Nonferrous Metallurgy

There are huge reserves of titanium resources in vanadium-titanium magnetite in Panxi area of Sichuan Province, China, which are mainly recycled in the form of titanium concentrate and mainly used as raw materials for the production of titanium dioxide and acid-soluble titanium slag by sulfuric acid method. Its output accounts for more than 75% of the national titanium raw material market.The process technology of titanium dioxide by sulfuric acid method is mature, but the co-production technology of titanium dioxide by sulfuric acid method has not been fully broken through. The technology of smelting acid-soluble titanium slag by electric furnace is relatively mature,and the main process is the continuous smelting process of titanium concentrate without pretreatment-solid circular electrode-closed circular electric furnace. The new process of titanium slag such as titanium concentrate acid oxidation pellet-electric furnace smelting one-step process and high-power rectangular circular electric furnace smelting acid-soluble titanium slag has developed rapidly and has a large development space, which is the main development direction in the future.At present, one of the main problems in the development of titanium industry in Panxi area is the lack of high-grade titanium resources required by the boiling chlorination titanium dioxide process.In the future, it is necessary to break through the key technology of removing impurities and improving the quality of Panxi high-calcium magnesium ilmenite concentrate to produce high-grade high-titanium slag.At the same time, the recovery and recycling technologies of green vitriol and titanium gypsum, the technology of titanium extraction and comprehensive utilization of blast furnace titanium slag, the new technology of non-blast furnace ironmaking of vanadium-titanium iron concentrate, and the technology of preparing titanium-containing and titanium-based new materials with titanium concentrate, titanium slag or titanium dioxide as raw materials shouldbe studied and developed, in order to obtain the healthy and sustainable development of Panxi titanium industry.