甘肃某镜铁矿块矿分选试验研究  

Experimental Study on Separation of a Specularite Ore in Gansu

作　　者：池永沁 何波 周坤强 王韬 薛嘉仁 CHI Yongqin;HE Bo;ZHOU Kunqiang;WANG Tao;XUE Jiaren(Shaanxi Daxigou Mining Co.,Ltd.;Shaanxi Binchang Dafosi Mining Industry Co.,Ltd.)

机构地区：[1]陕西大西沟矿业有限公司 [2]陕西彬长大佛寺矿业有限公司

出　　处：《现代矿业》2024年第7期139-141,共3页Modern Mining

摘　　要：甘肃某镜铁矿随着不断开采,矿石性质变差,使用选厂原本工艺已无法得到铁品位合格的铁精矿。针对该矿开展选矿试验研究,结果表明,在煤气量为4590 m^(3)/h,煤气热值为4000 kJ/m^(3),加热空气量为3600 m^(3)/h,还原带温度为510℃条件下进行焙烧,对焙烧产品进行1粗3精弱磁选,磁选精矿的铁品位为52.50%,回收率为85.07%。磁选精矿以YG-328B为阳离子捕收剂,淀粉为抑制剂,进行1粗1精4扫反浮选闭路试验,获得了浮选精矿铁品位57.96%、作业回收率91.29%,对原矿回收率77.66%的指标。试验结果不仅可以有助于选厂生产组织,也为国内其他类型矿山生产组织提供了参考。With the continuous mining of a specularite mine in Gansu Province,the ore properties be⁃come worse,and the iron concentrate with qualified iron grade can not be obtained by using the original pro⁃cess of the concentrator.The ore dressing test is carried out for the mine.The results show that the roasting is carried out under the conditions of gas volume of 3400 m^(3)/h,gas calorific value of 4000 kJ/m^(3),heating air volume of 3600 m^(3)/h and reduction zone temperature of 510℃.The concentrate of the roasted product is subjected to one roughing and three cleaning low intensity magnetic separation.The iron grade of the magnet⁃ic separation concentrate is 52.50%and the recovery rate is 85.07%.The closed-circuit test of one rough⁃ing,one cleaning and four scavenging reverse flotation was carried out with YG-328B as cationic collector and starch as inhibitor.The flotation concentrate grade is 57.96%,the recovery rate is 91.29%,and the re⁃covery rate of raw ore is 77.66%.The test results can not only help the production organization of the concen⁃trator,but also provide reference for the production organization of other types of mines in China.

关 键 词：镜铁矿 磁化焙烧 磁选 反浮选 

分 类 号：TD951[矿业工程—选矿] TD924