河北某铁矿石选矿试验研究  

Experimental Study on Beneficiation of an Iron Ore from Hebei Province

作　　者：田一安 于茜 陈洲 TIAN Yian;YU Xi;CHEN Zhou(Sinosteel Australia Western Mining Co.,Ltd.;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;The National Engineering Research Center for High Efficient Recycle and Utilization of Huawei Metallic Mineral Resources Co.,Ltd.;School of Resources and Civil Engineering,Northeastern University)

机构地区：[1]中钢澳洲中西矿业有限公司 [2]中钢集团马鞍山矿山研究总院股份有限公司 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司 [4]东北大学资源与土木工程学院

出　　处：《现代矿业》2022年第11期104-107,共4页Modern Mining

摘　　要：为合理开发利用河北某矿业铁矿石,在矿石性质研究的基础上进行了选矿工艺试验研究。试验结果表明:原矿经干式磁选预选(50~0 mm)—湿式磁选预选(12~0 mm)—磨矿(-0.076 mm55%)—弱磁选流程选别,可获得铁品位65.67%、硫含量0.51%、铁回收率83.95%、磁性铁回收率96.09%的铁精矿,该铁精矿为半自熔性铁精矿粉;对该铁精矿采用浮选方法脱硫,铁精矿中的硫可降至0.23%;将磨矿细度提高到-0.076 mm75%,用弱磁选方法选别后,可获得铁品位68.50%、硫含量0.43%、铁回收率82.86%的铁精矿,说明提高磨矿细度和增加浮选作业均可降低铁精矿中的硫含量,提高铁精矿品位。In order to rationally develop and utilize an iron ore in Hebei,the beneficiation process test was carried out on the basis of ore properties.The results show that the iron concentrate with iron grade of 65.67%,sulfur content of 0.51%,iron recovery of 83.95%and magnetic iron recovery of 96.09%can be obtained by dry magnetic separation preconcentration(50~0 mm)-wet magnetic separation preconcentra⁃tion(12~0 mm)-grinding(-0.076 mm55%)-low intensity magnetic separation process.The iron concen⁃trate is semi-self-fluxing iron concentrate powder.The iron concentrate is desulfurized by flotation,and the sulfur in the iron concentrate can be reduced to 0.23%.By increasing the grinding fineness to-0.076 mm75%,the iron concentrate with iron grade of 68.50%,sulfur content of 0.43%and iron recovery of 82.86%can be obtained by low intensity magnetic separation.It shows that increasing the grinding fineness and increasing the flotation operation can reduce the sulfur content in the iron concentrate and improve the iron concentrate grade.

关 键 词：磁性铁矿石 干式预选 湿式预选 弱磁选 磨选工艺 

分 类 号：TD951[矿业工程—选矿]