Influence of TiO₂ Content on Gathering of Iron in Titania Bearing Blast Furnace Slag

The viscosity of vanadium titano-magnetite slag from Chengde iron ＆ steel company is greater than the common slag,the separation of the slag-iron is difficult and the iron content in slag is about 2%,all of which make the usage of slag difficult and production cost higher.This study had been done to figure out the existence form of iron in slag,the influence of TiO₂ content on iron gathering as well as the gathering mechanism of iron.The results show that with of TiO₂ content increasing,the quantity of gathering iron decreases,and the location of gathering iron changes from bottom and side to side and top,meanwhile there are high melting point Ti（C,N） particle appearing at the slag and the graphite crucible interface.With the content of TiO₂ increasing,iron content in slag increases from 0.4% to 1%.