There are lots of V-Ti bearing magnetite in Pan-Xi Zone, which accounts for 90.54% of total titanium resource in China. In present process, 53% Ti entries V-Ti bearing magnetite concentrate obtained by mineral separation, which was refined By blast furnace, almost all of titanium entry the slag phase and form the blast furnace slag including 22%~25% TiO_2. Nowadays, there are no effective methods to recover this slag, which is piled by large. It is not only waste of Ti resource, but polluting env...