攀西某钒钛磁铁矿选铁尾矿选钛试验研究

Study on Ilmenite Separation from the Iron tailings of a Vandium-titanium Magnetite Ore in Panxi Area

攀西某钒钛磁铁矿选铁尾矿TiO_2含量为8.61%,主要金属矿物为钛铁矿、磁黄铁矿和黄铁矿,主要脉石矿物为普通辉石、橄榄石、普通角闪石和绿泥石。矿石组成复杂,橄榄石含量高。针对选铁尾矿性质,采用强磁-浮选流程选钛,选铁尾矿经过强磁选预选后TiO_2品位由8.61%提升至15.96%,强磁作业回收率77.93%;浮选采用自行研制的调整剂EMZT-01配合硫酸和草酸使用,以EMZB-01作为浮钛捕收剂配合中性油煤油强化捕收,以一粗一扫四次精选的工艺流程获得了较好的试验指标。小型试验获得了TiO_2品位47.78%、浮选作业回收率为61.25%的钛精矿产品,对选铁尾矿TiO_2回收率达到47.73%。

The study aims at separating ilmenite from the iron tailings of a vandium-titanium magnetite ore in Panxiareaamong,which the content of TiOz was 8.61%, and the main metallic minerals are ilmenite, pyrrhotite and pyrite. Themain gangue minerals are augite, olivine, hornblende and chlorite. According to the properties of iron tailings,with thecomplex ore composition and high olivine content,the proper process for separation ilmenite is the high-intensity magneticseparation-flotation flowsheet,and the grade of TiO2 was increased from 8.61% to 15.96% and the operation recoveryrate is 77.93%. Good test index has obtained by flotation, by using self-made regulator EMZT-01,sulfuric acid and oxalicacid, and using collector EMZB-01 with kerosene as an auxiliary collector.The ilmenite concentrate with the TiO2 gradeof 47.78% and the flotation operation recovery of 61.25%, has obtained, and to the iron tailings TiO2 recovery achieves47.73%by adepting the process of one-roughing, onescavenging and four cleaning in the small-scale test.