某鲕状赤铁矿反浮选降硅正交试验研究

The Orthogonal Research for an Oolitic Hematite to Reduce the Content of Quartz

某宣龙鲕状赤铁矿含铁45.18%,为了获得合格的铁精矿,采用阴离子反浮选工艺对磁化焙烧后磁选的精矿进行浮选提纯,采用三因素三水平正交试验确定合理的浮选药剂制度。最后确定的最佳药剂制度为淀粉用量为1 000 g/t、石灰用量为2 000 g/t、捕收剂用量为1 280 g/t,可获得铁品位63.83%、回收率84.59%的铁精矿。

In order to obtain qualified iron concentrate from a Xuanlong oolitic hematite ore with TFe content of 71 .84%, the anionic reverse flotation process was used to separate quartz from roasted magnetic concentrate .A three factor-three level orthogonal experiment was designed to de-termine the appropriate reagent regime .The best result was got when the dosage of starch was 1 000 g/t, lime was 2 000 g/t and collector was1 280 g/t.A final iron concentrate with an iron grade of 63 .83%and a recovery of 84 .59%was obtained .