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金属矿山 ›› 2010, Vol. 39 ›› Issue (04): 64-67+88.

• 矿物工程 • 上一篇    下一篇

某微细粒赤铁矿选矿工艺研究

 胡义明, 刘军, 张永   

  1. 中钢集团马鞍山矿山研究院有限公司
  • 出版日期:2010-04-15 发布日期:2010-11-09
  • 基金资助:

    “十一五”国家科技支撑计划项目(编号:2006BAB02A04)。

Study on the Beneficiation Process of a Certain Micro-fine-grained Hematite

 HU  Yi-Ming, LIU  Jun, ZHANG  Yong   

  1. Sinosteel Maanshan Institute of Mining Research Co.,Ltd.
  • Online:2010-04-15 Published:2010-11-09

摘要: 对某微细粒赤铁矿分别采用阶段磨矿—重选—弱磁选—高梯度强磁选—反浮选工艺流程和阶段磨矿—弱磁选—高梯度强磁选—反浮选工艺流程进行了选别试验,前者获得的铁精矿铁品位为64.88%,铁回收率为79.91%,后者获得的铁精矿铁品位为65.45%,铁回收率为79.84%。从选别指标、流程结构及磨矿成本考虑,推荐采用阶段磨矿—弱磁选—高梯度强磁选—反浮选工艺流程。

关键词: 微细粒赤铁矿, 阶段磨矿, 高梯度强磁选, 反浮选

Abstract: The two beneficiation flow-sheet experiments are carried out for a certain micro-fine-grained hematite,respectively,which consist of the process of stage grinding- gravity separation - low intensity magnetic separation - high gradient and intensity magnetic separation- inverse flotation and the process of grinding- low intensity magnetic separation-high gradient and intensity magnetic separation-inverse flotation. The first process got the iron concentrate upgrading of 64.88% with 79.91% iron recovery; The second process obtained iron concentrate upgrading of 65.45% with 79.84% iron recovery. Considering the separation index,flow-sheet structure and grinding costs,the process of stage grinding-low intensity magnetic separation-high gradient and intensity magnetic separation-inverse flotation is recommended.

Key words: Micro-fine-grained hematite, Stage grinding, High-gradient high intensity magnetic separation,, Reverse flotation