China Nonferrous Metallurgy

About 4 million tons of titanium-bearing blast furnace slag is produced domestically each year, and currently stockpiles have been exceeded 80 million tons. TiO₂ content in the titanium-bearing high slag from west region of Panzhihua is greater than 20% and has higher utilization value. Currently extracted titanium products mainly include the following several technical branches: the preparation of TiO₂, the preparation of TiC/TiCI4 and the preparation of titanium alloys. Technical introduction and state of application of the three technical branches are described herein. Patent application, applicant type, the main applicant, international patent classification and cited times are analyzed from the patent perspective. On this basis, research and judgment of the future development of titanium extraction technology on the titanium bearing blast furnace slag are made. The technical research on the Ti-extracting product with TiO₂ will be the focus in the future, technology of Ti-extracting by selective precipitation separation or by acid soak hydrolysis hydrometallurgy will be the main process technology, and improving efficiency of Ti-extracting, or reducing acid consumption or pollution on environment by improving process of separation, acid leaching or hydrolysis will be the main direction of researching; The technical research on the Ti-extracting product with TiC/TiCl4 will be based on high temperature reduction, and will be purposed on improving titanium conversion efficiency and production efficiency. The technical research on the Ti-extracting product with Ti alloy will be focused on changing reducing agent, improving process of producing metal Ti, or widening the product range of Ti alloy.