贵州观音山菱铁矿选矿试验  

Beneficiation Test on Guanyingshan Qingsha Siderite Ore

作　　者：喻荣高[1,2] 杨大兵[1,2] 唐庆华[3] 张东升[3] 吴明[1,2] 

机构地区：[1]武汉科技大学资源与环境工程学院 [2]钢铁冶金及资源利用省部共建教育部重点实验室 [3]首钢水城钢铁(集团)有限责任公司观音山矿业公司

出　　处：《金属矿山》2011年第6期74-77,共4页Metal Mine

摘　　要：为有效利用贵州观音山地区的菱铁矿资源,对该矿石进行了重选、强磁选及磁化焙烧—弱磁选试验。结果表明:重选和强磁选都难以获得品位合格的铁精矿;在焙烧温度为850℃、焙烧时间为60 min、还原剂用量为4%、最终磨矿细度为-325目占80%、磁感应强度为150 mT的条件下,观音山菱铁矿经过磁化焙烧和两段磨矿、两段弱磁选,可以获得铁品位为64.41%、S和P含量分别为0.19%和0.024%、铁回收率为87.41%铁精矿。In order to make use of the siderite resources in Guanyingshan district of Guizhou province,the beneficiation tests of gravity separation-high intensity magnetic separation and the magnetic roasting-low intensity magnetic separation on this ore is carried out.The results showed that only the process of gravity separation and magnetic separation can not obtain the qualified iron concentrate.Under conditions of roasting temperature at 850 ℃ for 60 min,the dosage of reducing agent of 4%,the final grinding fineness of-325 mesh 80%,and the magnetic intensity of 150 mT,iron concentrate with Fe grade of 64.41%,S and P content of 0.19% and 0.024% and Fe recovery of 87.41% were obtained by the process of magnetic roasting-two-stage grinding-two-stage low intensity magnetic separation for Guanxinshan siderite ores.

关 键 词：菱铁矿 重选 强磁选 磁化焙烧—弱磁选 

分 类 号：TD951.1[矿业工程—选矿]