Experimental Researches on Removal of Chloride in Blast Furnace Slag after Extracting Titanium

The chloride-containing tailings produced in the process of titanium extraction from high titanium blast furnace slag were analyzed.For achieving the non-hazardous treatment,the technologies of chloride removal for tailings after extracting titanium by washing and high-temperature calcination were investigated.The results show that the 4 processes of washing,calcination with trace amount of water,washing-calcination and multistage washing-calcination all can remove chloride in the tailings to a certain content,of which the chloride is most effectively removed and the tailings are made satisfying the national construction industry standards by multistage washing-calcination process.It is expected that the tailings after extracting titanium can be extensively and synthetically utilized in construction industry by the technologies mentioned above.