高压辊磨超细碎优化七角井矿分选流程研究  

Research on ultra-fine crushing of HPGR to optimize separation process flow for Qijiaojing

作　　者：曹克杰 展仁礼[1] 陈铁军[2,3] 姜翔波 CAO Kejie;ZHAN Renli;CHEN Tiejun;JIANG Xiangbo(Hongxing Iron and Steel Co.,Ltd.,Jiuquan Iron and Steel Group,Jiayuguan 735100,Gansu,China;School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan 430081,Hubei,China)

机构地区：[1]酒钢集团宏兴股份公司,甘肃嘉峪关735100 [2]武汉科技大学资源与环境工程学院,甘肃嘉峪关7351001 [3]冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《矿山机械》2024年第2期38-43,共6页Mining & Processing Equipment

摘　　要：为优化酒钢集团某矿厂铁矿分选工艺流程,提高入磨矿品位,降低选矿成本,开展了高压辊磨超细碎—预先磁选抛尾试验研究。结果表明,一段磁选抛尾精矿铁品位为24.85%,磁性铁回收率为98.91%,尾矿磁性铁品位为1.58%;二段磁选精矿铁品位为26.73%,磁性铁回收率为98.58%,尾矿磁性铁品位为2.38%;在高压辊磨磁选试验中,湿式磁选抛尾效果较好,在3 mm湿式磁选抛尾工艺中,磁选精矿品位为28.62%,回收率为94.83%;在5 mm湿式磁选抛尾工艺中,磁选精矿品位为28.35%,回收率为95.54%。In order to optimize the separation process of the iron ore in a mine of Jiuquan Iron and Steel Group,improve the grade of the ore entering the mill and reduce the mineral processing cost,the experiment of ultra-fine crushing of HPGR and pre-magnetic separation for tailing discarding was carried out.The results showed that the iron grade of the concentrate was 24.85%,the recovery rate of the magnetic iron was 98.91%,and the magnetic iron grade of the tailings was 1.58%at the first stage of magnetic separation for tailing discarding.Then,the iron grade of the concentrate was 26.73%,the recovery rate of the magnetic iron was 98.58%,and the magnetic iron grade of the tailings was 2.38%at the second stage of magnetic separation.In the magnetic separation experiment of HPGR,the effect of wet magnetic separation was better.In the 3 mm wet magnetic separation for tailing discarding process,the magnetic concentrate grade was 28.62%and the recovery rate was 94.83%.In the 5 mm wet magnetic separation for tailing discarding process,the magnetic concentrate grade was 28.35%and the recovery rate was 95.54%.

关 键 词：高压辊磨 贫铁矿 超细碎 湿式磁选 磁选抛尾 

分 类 号：TD951[矿业工程—选矿]