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某浮选尾矿氧压预处理—氰化浸出金银试验研究

  • 作者:
  • 白成庆|陈国兰|付绸琳|付高明
  • 作者单位:
  • 湖南水口山有色金属集团有限公司|湖南水口山有色金属集团有限公司|湖南水口山有色金属集团有限公司|湖南水口山有色金属集团有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 白成庆(1983—),男,山东荷泽人,高级工程师?邮掠猩鹗粞】蠊ぷ鳎缓鲜『庋羰兴谏秸蚨煽诼罚纤谏接猩鹗艏庞邢薰荆?21513;E-mail:zuoshou339@163.com
  • 通讯作者:
  • isnull
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Experimental research on gold and silver recovery from certain flotation tailings with oxygen pressure pretreatment-cyanidation leaching

  • English Author:
  • Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.|Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.|Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.|Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

某浮选尾矿中金、银品位分别高于2.5 g/t、100 g/t,具有回收利用价值。试验采用氧压预处理—氰化浸出进行回收,考察了氧压、温度、反应时间、液固比及添加剂等因素对金、银浸出率的影响。结果表明:在预处理氧压1.5~1.8 MPa、温度180 ℃~200 ℃、反应时间1.0 h、液固比3∶1的条件下,预处理后浮选尾矿氰化浸出金浸出率为81.77 %,银浸出率为33.29 %;添加剂的添加有利于提高银浸出率。该研究为浮选尾矿工业回收金、银提供技术参考。

关键词:

氧压预处理;氰化浸出;浮选尾矿;金回收;浸出率

Abstract:

The gold and silver grades in certain flotation tailings are higher than 2.5 g/t and 100 g/t respectively,making the tailings worth recovering.The experiment used oxygen pressure pretreatment-cyanidation leaching for recovery,and investigated the effect of oxygen pressure,temperature,reaction time,liquid-solid ratio and additives on gold and silver leaching rates.The results show that when the pretreatment oxygen pressure is 1.5-1.8 MPa,tempera-ture is 180 ℃-200 ℃,reaction time is 1.0 h and liquid-solid ratio is 3∶1,the gold cyanidation leaching rate of flotation tailings after pretreatment is 81.77 % and silver leaching rate is 33.29 %;the addition of additives is beneficial to improving silver leaching rate.The research can provide technical reference for industrial recovery of gold and silver from flotation tailings.

Keywords:

oxygen pressure pretreatment;cyanidation leaching;flotation tailings;gold recovery;leaching rate