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某高硫含砷难处理金矿选冶试验研究

  • 李建华|孙小俊
  • 作者单位:
  • 大冶有色金属集团控股有限公司|大冶有色金属集团控股有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 李建华(1984—),男,高级工程师,从事有色金属开发利用及矿山管理工作;E-mail:lijianhua129@126.com
  • 通讯作者:
  • 孙小俊(1984—),女,高级工程师,从事有色金属开发利用工作;E-mail:sxj547636@126.com
  • PDF下载

Experimental research of a refractory gold ore with high sulfur and arsenic content

  • English Author:
  • Daye Nonferrous Metals Group Holding Company Ltd.|Daye Nonferrous Metals Group Holding Company Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

针对某金矿中硫、砷含量过高且易泥化导致金回收率低的问题,采用阶段磨矿阶段浮选—浮选尾矿非氰浸出工艺流程开展试验研究。研究结果表明:在一段磨矿细度-0.074 mm占75.6 %、二段磨矿细度-0.043 mm占78.1 %,酸化水玻璃用量为1 650 g/t,硫酸铜用量为350 g/t,丁基黄药+丁铵黑药用量为(240+96) g/t,松醇油用量为160 g/t的条件下进行浮选试验,浮选尾矿采用非氰浸出剂进行非氰浸出,最终获得了浮选金精矿金回收率84.40 %,浮选尾矿金浸出率10.52 %,总金回收率94.92 %的回收指标。研究结果对开发该类金矿资源具有重要指导意义。

关键词:

难处理金矿;含硫;含砷;非氰浸出剂;黏土矿物

Abstract:

In response to the problem of low gold recovery caused by high sulfur and arsenic content in a gold ore,which is prone to sludging,an experimental study was conducted using a staged grinding,staged flotation-non-cyanide leaching process for flotation tailings.The research results showed that under the conditions of a first-stage grinding fineness of -0.074 mm accounting for 75.6 % and a second-stage grinding fineness of -0.043 mm accounting  for 78.1 %,with the addition of 1 650 g/t acidified water glass,350 g/t copper sulfate,(240+96)g/t of butyl xanthate+ammonium dibutyl dithiophosphate,and 160 g/t terpilenol,a flotation process was tested,and the flotation tailings were subjected to non-cyanide leaching using leaching agent.The final recovery indicators obtained were an 84.40 % gold recovery rate for flotation concentrate,a 10.52 % gold leaching rate for flotation tailings,and a total gold recovery rate of 94.92 %.The research findings have important guiding significance for the development of similar gold resources.

Keywords:

refractory gold ore;sulfur content;arsenic content;non-cyanide leaching agent;clay minerals