攀枝花某极贫钒钛磁铁矿选铁工艺探索

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

探索了攀枝花矿区某极贫钒钛磁铁矿的破碎、球磨、磁选工艺。对破碎后全矿磨选工艺,以及破碎后预磁选抛尾、预选精矿磨选工艺进行了试验。结果表明,通过三次破碎,可将平均含铁17.79%、块度500～30 mm的原矿,破碎到25 mm以下;破碎后物料全部磨选或经预磁选抛尾后磨选,可获得含铁56%以上的铁精矿;预磁选可将入磨选品位提高到19.57%、物料量降低33.54%。

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%.