攀枝花某细粒嵌布铁矿石分选工艺  

Study on Separation Process of a Fine-disseminated Iron Ore in Panzhihua

作　　者：唐昊 赵通林 Tang Hao;Zhao Tonglin(School of Mining Engineering,University of Science and Technology Liaoning,Anshan,Liaoning,China;Angang Mining Engineering Corporation,Anshan,Liaoning,China)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁鞍山114051 [2]鞍钢集团矿业设计研究院有限公司,辽宁鞍山114002

出　　处：《矿产综合利用》2022年第6期131-137,共7页Multipurpose Utilization of Mineral Resources

摘　　要：攀枝花某铁矿原矿石中有用矿物为磁铁矿,其磁性铁分布率为79.53%,有少量的赤铁矿、褐铁矿,钒钛含量极低无法进行物理选别,脉石矿物主要为云母、长石等硅酸盐矿物,矿石中的有用矿物因嵌布粒度细导致极难回收利用。为了高效开发利用该类矿石资源,经磨矿、磁选条件实验及重选探索实验,确定了单作业较佳工艺参数,经工艺流程实验,确定采用阶段磨矿、阶段选别、单一磁选工艺处理该矿石。工艺流程实验结果表明,在原矿石中铁品位36.78%,经三次磨矿、五次磁选,在-43μm含量98%的最终磨矿粒度条件下,最终获得铁精矿品位为65.50%,产率41.77%,金属回收率为74.39%的铁精矿,为有效利用细粒嵌布类型攀枝花铁矿提供了新的参考工艺。Valuable minerals in the raw iron ore in Panzhihua is magnetite,in which the ratio of magnetic iron ore is 79.53%,followed by hematite and limonite,with extreme low content of vanadium and titanium that unable to concentrate,the gangue minerals are silicate minerals such as mica,feldspar,etc.Due to its fine-disseminated particle size,the raw iron ore is difficult to recycle.In order to develop and utilize this kind of ore resources efficiently,a combined flow sheet of stage grinding-stage separation-certain magnetic separation is finally determined to treat this ore after several grinding and magnetic separation condition tests and gravity election investigated test.The beneficiation process results show that the final concentrate with iron grade of 65.50%,yield of 41.77%and metal recovery of 74.39%can be obtained when the iron grade of raw ore is 36.78%and the content of-43μm is 98%of the final grinding particle size.It provides a new reference process for the Panzhihua fine disseminated iron ore.

关 键 词：磁铁矿 细粒嵌布 阶段磨矿 单一磁选 

分 类 号：TD924[矿业工程—选矿]