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金属矿山 ›› 2015, Vol. 44 ›› Issue (11): 66-69.

• 矿物工程 • 上一篇    下一篇

重庆某菱铁矿石磁化焙烧—磁选试验

蔡新伟,葛英勇,瞿军   

  1. 武汉理工大学资源与环境工程学院,湖北 武汉 430070
  • 出版日期:2015-11-15 发布日期:2015-12-16

Magnetization Roasting-Magnetic Separation on a Siderite Ore from Chongqing

Cai Xinwei,Ge Yingyong,Qu Jun   

  1. School of Resources and Environmental,Wuhan University of Technology,Wuhan 430070,China
  • Online:2015-11-15 Published:2015-12-16

摘要: 为了确定重庆某高度氧化的菱铁矿资源的开发利用方案,采用磁化焙烧—磨矿—弱磁选工艺进行了选矿试验。结果表明:在磁化焙烧温度为800 ℃、焙烧时间为50 min、配碳量为10%、磁化焙烧产物的磨矿细度为-200目占88%、弱磁选磁场强度为119.43 kA/m的情况下,可获得铁品位为58.94%、铁回收率为76.38%的弱磁选精矿;弱磁选精矿中Al2O3、MgO、MnO的含量较高,是仅次于SiO2的影响精矿铁品位的因素,这些杂质有待后续反浮选试验脱除。

关键词: 菱铁矿, 磁化焙烧, 弱磁选

Abstract: In order to confirm the utilization scheme of a highly oxidized siderite ore from Chongqing Province,the experimental study of the magnetic roasting-grinding-low intensity magnetic separation process was carried out.Under the conditions of roasting temperature at 800 ℃ for 50 min,the consumption of coal of 10%,the grind fineness of roasted product for 88% passing 200 mesh,low intensity magnetic separation of magnetic field intensity of 119.43 kA/m,low intensity magnetic concentrate with iron grade of 58.94%,and iron recovery of 76.38% were obtained.After SiO2,the high contents of MgO,MnO and Al2O3 in the weak magnetic separation concentrate are the factors that affect the iron grade of concentrate.

Key words: Siderite, Magnetic roasting, Low intensity magnetic separation