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金属矿山 ›› 2010, Vol. 39 ›› Issue (09): 47-50.

• 矿物工程 • 上一篇    下一篇

大红山铁矿400万t/a选厂磁场筛选机工业试验

李迎国1,2,雷晴宇1,2   

  1. 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
  • 出版日期:2010-09-15 发布日期:2010-11-09
  • 通讯作者: 李迎国,450006 河南省郑州市陇海西路328号。
  • 作者简介:李迎国(1964—),男,中国地质科学院郑州矿产综合利用研究所,国家非金属矿资源综合利用工程技术研究中心,研究员。

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

Li Yingguo1,2,Lei Qingyu1,2   

  1. 1. Chinese Academy of Geological Sciences, Zhengzhou Institute of Multipurpose Utilization of Mineral Resources;2. National Engineering Center for Multipurpose Utilization of Non-metallic Mineral Resources
  • Online:2010-09-15 Published:2010-11-09

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SiO2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。

关键词: 磁铁矿, 弱磁选精矿, 磁筛精选, 提铁降硅

Abstract: 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.

Key words: Magnetite, Weak magnetic concentrate, Cleaning separation by magnetic screening, Iron improvement and silicon reduction