关键词: 钒钛磁铁矿, 含钛高炉渣, 综合利用, 提钛

Abstract: The titanium resources of vanadium titanomagnetite concentrate are enriched in the Ti-bearing blast furnace slag after the blast furnace smelting in China.The Ti-bearing blast furnace slag has complex compositions so that it can′t be comprehensive utilized.The Ti-bearing blast furnace slag not only brings a huge environment pollution but also lead to the waste of titanium resource.The development of study on comprehensive utilization of Ti-bearing blast furnace slag were summarized，emphases the problems existing on the direct-utilization methods and extraction of titanium from Ti-bearing blast furnace slag.Directly utilize the slag(such as make building material and function material) have a disappoint results of titanium utilization efficiency and has little beneficiation value，although it can solve the environmental problems caused by the accumulation.The methods of extracting titanium，via direct acid preparation or alkaline treatment，product quality and economical efficiency is low，can cause secondary pollution;blast furnace slag containing titanium produce titanium alloy cost is high，the product application range is narrow;titanium minerals shift not thoroughly by selective enrichment and separation method to extractive titanium，and high energy consumption，large consumption of additives，titanium recovery rate is not high;High temperature carbonization and low temperature chlorination process，the high temperature carbonization process can make use of physical heat of liquid slag，greatly reduce the carbonization process of energy consumption，low temperature chlorination process can be realized in 400 ~ 550 ℃ TiC selective chlorination，avoid the influence of impurities such as calcium，magnesium，and chloride products of low content of impurities，titanium recovery rate is high，the product value is high.On this basis，points out that the high temperature carbonization and low temperature chlorination method has industrialization prospect,deserves further research.

Key words: Vanadium titanomagnetite, Ti-bearing blast furnace slag, Comprehensive utilization, Extracting titanium