(1. National Engineering and Research Center of Continuous Casting Technology,Central Iron and Steel Research Institute,Beijing 100081,China 2. School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 3. Central Iron and Steel Research Institute,Hesteel Group,Shijiazhuang 050023,Hebei,China 4. Chengde Branch,Hebei Iron and Steel Co.,Ltd.,Chengde 067002,Hebei,China)
Abstract:Comprehensive utilization of Ti-bearing blast furnace slag has long been hot and difficult research topic in solid wastes field of iron and steel industry. Current situations of comprehensive utilization of Ti-bearing blast furnace slag was summarized, and the technology of comprehensive utilization and industrialization difficulty and effect on the environment influence was indicated. The results show that extracting titanium process is relatively complex, with high energy consumption, harmful to the environment by strong acid or alkali, and high temperature chlorination or carbide from titanium-containing blast furnace slag. It shows that it is wasteful for the titanium to use Ti-bearing blast furnace slag to make building materials although it is environmentally friendly. Ti-bearing blast furnace slag can be fully used by being made catalyst, antibacterial materials and fertilizer and no tailings and pollutants are produced. A variety of compositions in Ti-bearing blast furnace slag should be usd comprehensively, to improve the ratio of comprehensive utilization and make comprehensive utilization of Ti-bearing blast furnace slag harmonious with environment.
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