东鞍山磁选混合精矿浮选选铁试验  

Experiment on Flotation for Iron-selection from Mixed Concentrate after Magnetic Separation in Donganshan

作　　者：任鹏园 侯英 赵通林 林松 REN Pengyuan;HOU Ying;ZHAO Tonglin;LIN Song(School of Mining Engineering,University of Science and Technology Liaoning;Engineering and Technology Research Center of High-efficiency Mining-processing and Utilization of Metal Mineral Resources,Liaoning Province)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁省鞍山市114000 [2]辽宁省金属矿产资源高效采选与利用工程技术研究中心

出　　处：《现代矿业》2023年第2期9-11,共3页Modern Mining

基　　金：辽宁省教育厅项目(编号:2019LNQN09);辽宁科技大学大学生创新创业训练计划项目(编号:S202110146006S)。

摘　　要：东鞍山烧结厂的弱磁选、强磁选混合精矿铁品位为45.48%,其中的主要矿物为磁铁矿、赤铁矿、菱铁矿,石英、绿泥石等少量。为获得较高品位的铁精矿,进行了分步浮选试验。结果表明,在正浮选淀粉用量800 g/t、TD-Ⅱ用量200 g/t,反浮选粗选淀粉用量500 g/t、氧化钙用量800 g/t、TD-Ⅱ用量800 g/t,反浮选精选TD-Ⅱ用量400 g/t的情况下,试样采用1次正浮选,1粗1精3扫、中矿顺序返回流程处理,最终获得品位65.58%、回收率71.97%的精矿。The iron grade of the mixed concentrate after low-intensity magnetic separation or high-intensity magnetic separation in Donganshan sintering plant is 45.48%,in which the main minerals are magnetite,hematite and siderite,along with few quartz and chlorite.In order to obtain higher grade iron concentrate,step-by-step flotation test was carried out.The results showed that under the conditions of 800 g/t for starch and 200 g/t for TD-Ⅱin direct flotation,500 g/t for starch and 800 g/t for calcium oxide and 800 g/t for TD-Ⅱin reverse flotation during coarsing,and 400 g/t for TD-Ⅱin reverse flotation during cleaning,the sample is subjected to once direct flotation.A concentrate with grade of 65.58%and recovery rate of71.97%was obtained with one roughing,one cleaning,three scavenging and middling ore return in sequence.

关 键 词：磁选混合精矿 分步浮选 淀粉 氧化钙 

分 类 号：TD951[矿业工程—选矿] TD923