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金属矿山 ›› 2018, Vol. 47 ›› Issue (03): 116-121.

• 矿物工程 • 上一篇    下一篇

罗河铁矿选矿工艺流程优化

刘军1,丁开振2,王炬1   

  1. 1.中钢集团马鞍山矿山研究院有限公司,安徽 马鞍山 243071;2.安徽马钢罗河矿业有限责任公司,安徽 合肥 231562
  • 出版日期:2018-03-15 发布日期:2018-03-20
  • 基金资助:

    基金项目:安徽省重点研究与开发计划面上攻关项目(编号:1704a0802126)。

Optimization of Mineral Processing Flowsheet for Luohe Iron Mine

Liu Jun1,Ding Kaizhen2,Wang Ju1   

  1. 1.Sinosteel Maanshan Institute of Mining Research Co.,Ltd.Maanshan 243071,China;2.Masteel Luohe Mining Co.,Ltd.Hefei 231562,China
  • Online:2018-03-15 Published:2018-03-20

摘要: 马钢罗河铁矿选矿厂自建成投产以来,存在一段球磨机处理能力不能达到设计要求、弱磁选铁精矿含硫超标、赤铁矿精矿选别指标差、硫精矿中的铜未能回收利用等问题。为解决上述问题,在对选矿厂磨选系统进行全流程考查的基础上,研究了矿石的可磨性特征,参照现场硫浮选、弱磁选、强磁选、重选作业的工艺参数,在实验室进行了选别效果验证试验,并详细研究了含铜硫精矿的铜硫分离工艺。根据研究结果,对选矿厂所存在的突出问题提出了改进措施。在完成磁铁精矿降硫和铜硫分离工艺优化改造后,有望使现场磁铁精矿S含量由0.51%降到0.30%以下;从硫精矿中分离出产率(对硫精矿)为0.82%、Cu品位为17.51%、Cu回收率(对硫精矿)为59.54%的铜精矿。

关键词: 硫浮选, 弱磁选, 强磁选, 重选, 铜硫分离, 可磨性, 机械夹杂

Abstract: Since the iron ore concentrator of Masteel Luohe Iron Mine was put into operation,there are such problems needed to be solved,that the capacity of stageⅠball mill can′t meet the design requirements,the sulfur content in the iron concentrate of LIMS is over the standard,the separation index of the hematite concentrate is poor and the copper in the sulfur concentrate is not recycled.In order to solve the problems above,on the basis of the whole process investigation on the grinding and dressing system in the dressing plant,the grindability of the ore was researched to verify the processing effect in the laboratory tests with referencing the process parameters of field sulfur flotation,LIMS,HIMS and gravity separation operation.The separation process of copper and sulfur in the sulfur concentrate which contains copper was studied.According to the research results,the improvement measures for the outstanding problems in the dressing plant were put forward.After the completion of sulfur reduction in the magnetite concentrate and copper-sulfur separation,the S content of the field magnetite concentrate will be reduced from 0.51% to less than 0.30%;copper concentrate separated from sulfur concentrate with production rate of 0.82% ( to sulfur concentrate),Cu grade of 17.51%,recovery rate of 59.54% (to sulfur concentrate) was obtained.

Key words: Sulphur flotation,LIMS, HIMS,Gravity separation, Separation of copper and sulfur, Grindability, Mechanical inclusion