新疆某铁精矿浮选脱硫试验

新疆某选矿厂铁精矿硫含量较高,达1.07%,明显高于入炉原料硫含量要求。为确定铁精矿的合理脱硫工艺,进行了浮选试验。结果表明,试验以FS为活化剂、异丁基黄药为捕收剂、2#油为起泡剂,在粗选用量分别为2 000、200、30 g/t,精选用量分别为500、100、20 g/t的情况下,采用1粗1精闭路流程处理试样,最终获得了铁品位为64.53%、铁回收率为97.13%、含硫0.21%的铁精矿,达到了入炉铁精矿含硫质量要求。

Experiment on Flotation Desulphurization of an Iron Concentrate in Xinjiang

The sulfur content of an iron concentrate in plant from Xinjiang is relatively high reaching 1.07%， which is significantly higher than the sulfur content of the raw materials in the furnace. Flotation test was carried out to determine the rational desulfurization process of iron concentrate. The results showed that FS was used as activator， isobutyl xanthate was used as collector， and 2# oil was used as foaming agent. The rough flotation dosage was 2 000，200，30 g/t， and cleaning flotation dosage is 500，100，20 g/t， respectively. The sample was treated with one roughing one cleaning closed circuit process， and finally iron concentrate with iron grade of 64.53%， iron recovery of 97.13%， and sulfur content of 0.21% was obtained. The quality requirement of sulfur content in iron concentrate has been achieved.