摘要
为了合理开发利用广东某高硫铁矿石,针对铁精矿硫含量超标难以销售的问题,在矿石性质研究的基础上,进行了阶段磨矿—阶段磁选、浮选—磁选—浮选、磁选—浮选—磁选3种工艺方案的对比探索试验。试验结果表明:磁选—浮选—磁选工艺对该高硫铁矿石的脱硫效果最好,在一段磨矿细度为-0.074 mm 65%,磁场强度为80 kA/m的条件下进行弱磁选,可得到磁性产品和非磁性产品;将磁性产品再磨至-0.045 mm 90%,固定新型活化剂X用量3000 g/t,捕收剂丁基黄药用量90 g/t,起泡剂2^(#)油用量60 g/t,通过1粗1扫反浮选脱除硫铁矿,扫选尾矿在磁场强度为80 kA/m的条件下进行弱磁选,最终获得了铁品位64.88%、含硫0.42%、全铁回收率50.68%的合格铁精矿。
In order to rationally develop and utilize a high-sulfur iron ore in Guangdong,aiming at the problem that the sulfur content of iron concentrate exceeds the standard and is difficult to sell,based on the study of ore properties,a comparative exploration test of three process schemes of stage grinding-stage magnetic separation,flotation-magnetic separation-flotation,magnetic separation-flotation-magnetic sepa⁃ration is carried out.The test results show that the magnetic separation-flotation-magnetic separation pro⁃cess has the best desulfurization effect on the high-sulfur iron ore.Magnetic products and non-magnetic products can be obtained by low intensity magnetic separation under the condition of first-stage grinding fineness of-0.074 mm 65%and magnetic field strength of 80 kA/m.The magnetic product is reground to-0.045 mm 90%,the dosage of new activator X was fixed at 3000 g/t,the dosage of collector butyl xanthate is 90 g/t,and the dosage of foaming agent 2^(#)oil is 60 g/t.The pyrite is removed by one roughing and one scavenging reverse flotation,and the scavenging tailings are subjected to low intensity magnetic separation under the condition of magnetic field strength of 80 kA/m.Finally,a qualified iron concentrate with iron grade of 64.88%,sulfur content of 0.42%and total iron recovery of 50.68%was obtained.
作者
刘群
钟国建
冯宁
胡文英
丁声强
许冲
艾光华
赵冠飞
LIU Qun;ZHONG Guojian;FENG Ning;HU Wenying;DING Shengqiang;XU Chong;AI Guanghua;ZHAO Guanfei(Guangdong Dabaoshan Mining Co.,Ltd.;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology)
出处
《现代矿业》
CAS
2024年第6期159-162,共4页
Modern Mining
关键词
高硫铁矿石
脱硫
磁滚筒
磁选
反浮选
high sulfur iron ore
desulfurization
magnetic drum
magnetic separation
reverse flotation
