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首页   >    选矿与冶炼

某贫硫化物含铅银难选矿石选矿试验研究

  • 作者:
  • 黄宇林|杨宁
  • 作者单位:
  • 洛阳坤宇矿业有限公司|洛阳坤宇矿业有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 黄宇林(1979—),男,广西梧州人,高级工程师,博士,从事选矿技术和矿山生产经营管理工作;河南省洛阳市洛宁县兴宁中路,洛阳坤宇矿业有限公司,471700;E-mail:huangyulin2008@163.com
  • 通讯作者:
  • isnull
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Experimental study on the beneficiation of a refractory leadbearing silver ore with poor sulfide content

  • English Author:
  • Luoyang Kunyu Mining Co.,Ltd.|Luoyang Kunyu Mining Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

河南某含铅银矿石具有氧化率高、含泥量大的特点,属贫硫化物含铅银氧化矿石,现场生产中尾矿银流失率高。针对矿石性质,进行了原矿重选—重选尾矿浮选试验研究,考察了不同磨矿细度、药剂用量下的选别效果。结果表明:采用原矿重选—重选尾矿浮选闭路流程,在碳酸钠用量300 g/t、硫化钠用量200 g/t及其他最佳试验条件下,可获得银品位8 892.40 g/t、铅品位18.35 %的重选精矿,银品位8 855.50 g/t、铅品位17.87 %、铜品位1.560 %的浮选精矿;银总回收率为81.31 %、铅总回收率为71.92 %、铜总回收率为73.12 %,各金属都得到了较好的富集回收。

关键词:

银矿石;浮选;氧化矿石;重选;铅

Abstract:

A refractory lead-bearing silver ore from Henan is characterized by high oxidation rate,high mud content,and belongs to lead-bearing silver ore with poor sulfide content.In production,the silver loss rate of tailings is high.Based on the ore property,experimental study on run-of-mill ore gravity separation-gravity separation tailings flotation was carried out and the beneficiation performance under different grinding fineness and reagent regime was investigated.The results show that when the dosage of Na2CO3 is 300 g/t,Na2S is 200 g/t and other parameters are optimal for the closed-circuit flowsheet of run-of-mill ore gravity separation-gravity separation tailings flotation,the gravity concentrate with silver grade of 8 892.40 g/t,lead grade of 18.35 % can be obtained,as well as the flotation concentrate with silver grade of 8 855.50 g/t,lead grade of 17.87 %,and copper grade of 1.560 %;the total recovery rates of silver,lead and copper are 81.31 %,71.92 %and 73.12 %respectively.Each metal gets well concentrated and recovered.

Keywords:

silver ore;flotation;oxide ore;gravity separation;lead