Investigative Test of Iron Separation Process of a Panzhihua Lower Grade Vanadium-bearing Titanomagnetite Ore

Investigative test of iron separation process of a kind of Panzhihua lower grade vanadium-bearing titanomagnetite ore,including crushing,grinding and magnetic separation were carried out.Two options were tested:（a） treat the ore by grinding and magnetic separation after crushing;（b） enrich the ore by pre-magnetic separation after crushing,then treat the concentrate by grinding and magnetic separation.The results show that the ore with average iron content of 17.79% can be crushed from 500~30 mm to 25 mm below by three steps of crushing;then it can be grinded and separated,or pre-magnetic separated before grinding and separation to obtain concentrate with iron content higher than 56%.In the case of pre-magnetic separation,iron content of the ore before grinding and separation can be increased to 19.57% with amount of material consumption reduced by 33.54%.