某超细粒级磁铁矿艾砂磨机三段磨矿半工业试验  

Semi-industrial Test of an Ultra-fine Grain Size Magnetite with Three-stage Grinding by Aisha Mill

作　　者：张春田 孙希乐 邓庆超 许新跃 张林 赵尚 曾鹏毅 郭淑飞 ZHANG Chuntian;SUN Xile;DENG Qingchao;XU Xinyue;ZHANG Lin;ZHAO Shang;ZENG Pengyi;GUO Shufei(Jiajiabu Iron Mine Co.,Ltd.,Benxi Iron and Steel Group;Zhejiang ALC Minerals Technology Co.,Ltd.)

机构地区：[1]本溪钢铁(集团)贾家堡铁矿有限责任公司 [2]浙江艾领创矿业科技有限公司

出　　处：《现代矿业》2024年第1期168-171,共4页Modern Mining

摘　　要：本钢集团某超细粒级磁铁矿为了解决铁精矿品位低的问题,针对原磨矿设备效率低和磨矿产品过磨、欠磨的问题,采用ALC-1000L型艾砂磨机开展了半工业试验研究。通过从生产流程中分流部分二段磁选粗精矿进入艾砂磨机磨矿,与生产中的三段磨矿分级流程平行作业,艾砂磨排矿并入现场三段磁选流程。试验结果表明:艾砂磨机磨矿产品粒级分布更窄,艾砂磨排矿与现场三段球磨旋流器溢流相比,经磁选后的铁精矿品位提高了3.65个百分点,尾矿品位降低了2.18个百分点,艾砂磨机分选指标较好,且节能降耗效果显著。In order to solve the problem of low grade of iron concentrate in an ultra-fine grain size magnetite of Benxi Iron and Steel Group,aiming at the problems of low efficiency of the original grinding equipment and overgrinding and undergrinding of grinding products,a semi-industrial experimental study was carried out by using ALC-1000L type Aisha mill.The semi-industrial test was carried out by diverting part of the two-stage magnetic separation rough concentrate from the production process into the grinding of the Aisha mill,which was operated in parallel with the three-stage grinding and classification process in the production,and the drainage-mine from the Aisha mill was incorporated into the three-stage magnetic sepa⁃ration process on site.The test results show that the particle size distribution of the grinding products of the Aisha mill is narrower.Compared with the overflow of the three-stage ball mill cyclone on site,the grade of iron concentrate after magnetic separation of Aisha mill drainage-mine is increased by 3.65 percentage points,and the grade of tailings is reduced by 2.18 percentage points.The separation index of the Aisha mill is better,and the energy saving and consumption reducing effect is remarkable.

关 键 词：磁铁矿 细粒级嵌布 选择性磨矿 窄粒级分布 艾砂磨机 

分 类 号：TD951[矿业工程—选矿]