酒钢悬浮焙烧磁铁矿选矿工艺优化研究  

Optimization of Beneficiation Process for JISCO′s Magnetite from Suspension Magnetization Roasting

作　　者：高泽宾[1] 王永刚[1] 张丽丽[2] GAO Zebin;WANG Yonggang;ZHANG Lii(Hongxing Iron and Steel Co Ltd,JISCO,Jiayuguan 735100,Gansu,China;Technology Center of Jiuquan Iron&Steel Group Limited Company,Jiayuguan 735100,Gansu,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100 [2]酒钢集团技术中心,甘肃嘉峪关735100

出　　处：《矿冶工程》2024年第3期68-72,共5页Mining and Metallurgical Engineering

基　　金：中央引导地方科技发展资金项目(22ZY1QB002)。

摘　　要：对酒钢悬浮焙烧磁铁矿进行了磨矿-选矿工艺优化研究。采用110 mT低场强磁选机预提精、中矿再磨后采用磁选富集抛尾、富集精矿经阳离子反浮选,最终获得TFe品位60.06%、SiO_(2)含量5.17%、金属回收率84.27%的综合精矿;与原工艺指标相比,精矿TFe品位提高了1.96个百分点,金属回收率提高了1.38个百分点,SiO_(2)含量降低了1.06个百分点。Based on the process mineralogy study,an experimental study on grinding-separation technique was performed for JISCO′s magnetite obtained from its suspension magnetization roasting process.In the experiment,a 110 mT low-intensity magnetic separator was firstly adopted for pre-concentration.The middlings were reground and processed by magnetic separation for enrichment and tailings discarding,and the obtained concentrate was subjected to reverse cationic flotation.Finally,the whole process produced the comprehensive concentrate grading 60.06%TFe and containing 5.17%SiO_(2),with metal recovery of 84.27%.In comparison with the previous processing technique,the TFe grade of concentrate is improved by 1.96 percentage points and the metal recovery is increased by 1.38 percentage points,while the SiO_(2) content falls by 1.06 percentage points.

关 键 词：磁化焙烧 磨矿解离度 可磨度 磁选 阳离子反浮选 铁精矿 提铁降硅 

分 类 号：TD92[矿业工程—选矿]