钒钛磁铁矿浮钛时残余钛磁铁矿的影响(英文)

我国钒钛磁铁矿资源丰富,最具代表性的攀枝花地区钒钛磁铁矿的选矿多是经弱磁选铁后,磁选尾矿再选钛.用于选钛的矿石中主要含钛矿物是钛铁矿,但仍有少量残余的钛磁铁矿.在磁选尾矿的浮选中,钛磁铁矿具有比钛铁矿更好的可浮性,同时由于残余磁铁矿的剩磁较大,加之磨矿加剧了磁团聚,部分脉石会随钛磁铁矿一起进去精矿,从而影响品位和回收率,也造成药剂的浪费.钒钛磁铁矿浮钛时残余钛磁铁矿有十分不利的影响,应在浮选前采取多次弱磁处理,尽量把钛磁铁矿去除干净.

Effect of Residual Titano-Magnetite on Floating Ilmenite from Vanadium Titano-Magnetite

China is rich in the vanadium titano-magnetite resources. The main utilization mode of vanadium titano-magnetite in Panzhihua district is firstly separating titano-magnetite by low intensity magnetic separation, and then concentrating ilmenite from magnetic separation tailings. Magnetic separation tailings mainly contain ilmenite, but there is still a small quantity of titano-magnetite. It is found that titano-magnetite presents more optimal floatability than ilmenite. Magnetic agglomeration of titano-magnetite occurs because of the existence of remanence and pre-floatation grinding. Therefore some gangues wrapped by titano-magnetite go into the floatation concentrate. In a word, titano-magnetite has adverse effect on ilmenite floatation by decreasing the grade and recovery of concentrate and increasing the reagent consumption. The pre-removal of residual titano-magnetite by low intensity magnetic separation before floating ilmenite from vanadium titano-magnetite is suggested.