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金属矿山 ›› 2008, Vol. 38 ›› Issue (03): 98-102.

• 矿物工程 • 上一篇    下一篇

提高某银锰矿选银回收率的试验研究

孙达1,牛福生1,李玉红2,高志明1   

  1. 1.河北理工大学;2.北京东方燕京地质矿山设计院
  • 出版日期:2008-03-15 发布日期:2011-07-21

Experimental Study on Improving Silver Recovery of A Certain Silver-Manganese Ore

Sun Da1,Niu Fusheng1,Li Yuhong2,Gao Zhiming1   

  1. 1.Heibei Polytechnic University;2.Beijing Oriental Yanjing Project Engineering Institute for Geology & Mining
  • Online:2008-03-15 Published:2011-07-21

摘要: 对某银锰矿进行了工艺矿物学研究,该矿石中的银主要以银锰矿和自然银两种矿物存在,而且软锰矿含量较高,在磨矿过程中易产生细泥。通过各种条件试验,最终采用粗磨-强磁选-细磨-浮选银-浮选锰泥的流程进行闭路试验,可以得到强磁精矿含银595.7 g/t,浮选银精矿含银7 328.0 g/t,浮选锰矿泥含银288.7 g/t,银的总回收率81.44%,合并3种精矿的平均品位为586.8 g/t的选矿指标。

关键词: 银锰矿, 软锰矿, 强磁选, 浮选

Abstract: Process mineralogy was made on a certain silver-manganese ore, where the silver mainly occurs in silver-manganese ore and natural silver mineral phases and the content of pyrolusite is high, which is apt to produce fine slime in grinding process. Based on conditional tests, a closed-circuit test was made on the flowsheet consisting of primary grinding, high intensity magnetic separation (HIMS), secondary grinding, silver flotation and manganese flotation. As a result, a HIMS concentrate containing 595.7 g/t, flotation silver concentrate grading 7 328.0 g/t and flotation manganese slime containing 288.7 g/t were obtained, with the total silver recovery being 81.44% and an average silver grade of the three concentrates being 586.8 g/t.

Key words: Silver-manganese ore, Pyrolusite, HIMS, Flotation