司家营铁矿阳离子反浮选降硅正交试验

Orthogonal Experimental Study on Cationic Reverse Flotation of a Magnetite and Hematite Mixed Iron Ore in Sijiaying Iron Mine

为了简化流程,降低成本,以淀粉为抑制剂,GE-609为捕收剂,对司家营铁矿选矿厂的混磁精矿进行了阳离子反浮选降硅试验研究。试验中采用二因素二水平的正交试验考查了抑制剂及捕收剂用量对反浮选效果的影响,最后确定的药剂制度为粗选淀粉用量1500 g/t,GE-609用量300 g/t。闭路流程试验结果表明,采用一次粗选、一次精选、两次扫选的浮选流程,可获得品位65.10%、回收率85.39%的铁精矿,尾矿品位降至11.91%,实现了低成本条件下的资源高效回收。

In order to simplify process and reduce beneficiation cost,the cationic reverse flotation tests were carried out by using starch as inhibitor and GE-609 as collector for the magnetic concentrate from an iron plant in Sijiaying Iron Mine. A two-factor two-level orthogonal test was designed to examine the effect of inhibitor and collector dosage on the anti-flotation. The test results were got when the starch dosage of roughing was 1500 g/t and GE-609 was 300 g/t. The results of the closed-circuit showed that a final iron concentrate with TFe grade of 65.10% and iron recovery of 85.39% was obtained according to the flowsheet of one roughing, one cleaning and two scavengings, which achieved efficient recovery of resources at low cost. Meanwhile, the grade of the tailing was reduced to 11.91%.