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金属矿山 ›› 2011, Vol. 40 ›› Issue (08): 72-75+85.

• 矿物工程 • 上一篇    下一篇

某鞍山式贫赤铁矿石选矿试验

高淑玲,魏德洲,崔宝玉,刘文刚,张瑞洋   

  1. 东北大学资源与土木工程学院
  • 出版日期:2011-08-09 发布日期:2011-08-11

Tests on Beneficiation of an Anshan-type Low-grade Hematite Ore

Gao Shuling,Wei Dezhou,Cui Baoyu,Liu Wengang,Zhang Ruiyang   

  1. College of Resources and Civil Engineering, Northeastern University
  • Online:2011-08-09 Published:2011-08-11

摘要: 为了给某鞍山式贫赤铁矿石的开发利用提供依据,对该矿石进行了磨矿钢球制度优化和选别工艺试验研究。结果表明:对于试验所用φ160 mm×180 mm球磨机,以直径为15、20和25 mm的3种钢球(质量比依次为24%、36%、40%)作为磨矿介质,可为后续分选提供泥化程度较轻的磨矿产品。在该钢球制度下,将矿石磨至-0.071 mm占75%,采用分级—重选—磁选—反浮选工艺流程进行分选,可获得铁品位和铁回收率分别为66.69%和76.22%的综合铁精矿。  

关键词: 鞍山式贫赤铁矿石, 分级, 重选, 磁选, 反浮选, 磨矿钢球制度

Abstract: In order to provide a basis for development and utilization of a poor Anshan-type hematite ore, the optimization of the steel ball system of grinding and the concentration tests were carried out. The results showed that with the ball mill of φ160 mm×180 mm, the products with slight sliming in grinding process was supplied for the latter beneficiation when the ball diameters were 15, 20 and 25 mm (its mass ratio are 24%, 36%, 40% respectively). When the ore was ground to the size of 75% -0.071 mm under the steel ball system of grinding, a combined concentrate with iron grade and recovery of 66.69% and 76.22% separately was obtained through the beneficiation flow-sheet of classification-gravity concentration-magnetic separation-reverse flotation.

Key words: Anshan-type low-grade hematite ore, Classification, Gravity concentration, Magnetic separation, Reverse flotation, Steel ball system of grinding