大红山铁矿400万t/a选厂磁场筛选机工业试验  

Industrial Tests of the Magnetic Field Screening Separator in Dahongshan Iron Ore's 4 million t/a Concentrator

作　　者：李迎国[1,2] 雷晴宇[1,2] 

机构地区：[1]中国地质科学院郑州矿产综合利用研究所 [2]国家非金属矿资源综合利用工程技术研究中心

出　　处：《金属矿山》2010年第9期47-50,共4页Metal Mine

摘　　要：为了进一步提高大红山铁矿精矿品位,采用磁场筛选机对大红山400万t/a选厂的2次和3次弱磁选精矿进行工业分流精选试验,经对3次弱磁选精矿进行磁筛精选后,精矿铁品位由65.16%提高到67.27%,精选作业铁回收率89.24%,精矿中S iO2由5.82%降到了3.97%,说明磁筛对该矿具有显著地提铁降硅的效果。In order to further enhance iron ore concentrate grade of Dahongshan,an industrial cleaning separation test is carried out for the second-stage and third-stage weak magnetic concentrate by adopting the magnetic field screening separator in Dahongshan 4 million t/a processing plant.After three magnetic separations,iron concentrate grade is increased from 65.16% up to 67.27% with iron recovery of 89.24%.And SiO2 content in concentrate is dropped to 3.97% from 5.82%.It is shown that the magnetic screen has a significant effect on iron increase and silicon reduction.

关 键 词：磁铁矿 弱磁选精矿 磁筛精选 提铁降硅 

分 类 号：TD924.11[矿业工程—选矿]