Research Progress of Selective Enrichment and Precipitation of Titanium in High Titanium Blast Furnace Slag

Based on lots of research work on Ti-bearing blast furnace slag utilization,current situations of comprehensive utilization of Ti-bearing blast furnace slag and technologies of enrichment and precipitation of Ti in high titanium slag were summarized. The ways of titanium extraction from Ti-bearing slag mainly include titanium alloy production,acid treatment,alkali treatment or high-temperature carbonization and low-temperature chlorination of high titanium slag,and extraction of Ti-enriched phases by selective separation techniques.The research progress of crystallization behaviors of Ti enrichment phases such as perovskite,rutile and anosovite in high titanium slag was emphatically introduced. The effective enrichment and separation of Ti-containing phases and industrial production are the research focus and direction.It is important to effectively extract Ti from high titanium slag,which has great economic value and practical significance for comprehensive utilization of Ti-bearing slag.