Study On Process Mineralogy And Titanium Separation Of Ti-Bearing EAF Slag

摘要

Panzhihua Steel Plant adopts a new process - "rotary hearth furnace (RHF) direct reduction - electric arc furnace (EAF) deep reduction" - to manufacture iron, and the resultant Ti-bearing slag contains 44.03% titanium dioxide and has higher contents of impurities such as calcium, magnesium and silicon, so it cannot be prepared titanium dioxide alone. In order to effectively utilize the slag, process mineralogical research and a large number of mineral processing tests have been conducted so as to ascertain the separability of Ti-bearing slag. The results show that flotation technology is an effective way to dispose the slag, comparing with other beneficiation methods. Finally, titanium concentrate indexes, TiO_2 grade of 66.49% and recovery of 71.91%, were obtained by using open circuit flow of "2-roughing and 4-concentrate".