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首页   >    选矿与冶炼

高铜载金炭铁盐法脱铜试验研究

  • 作者:
  • 陈庆根
  • 作者单位:
  • is null
  • 基金项目:

  • 福建省科技计划重点项目(2013I0014)
  • 详细信息:

  • 作者简介:
  • 陈庆根(1979—),男,江西峡江人,高级工程师,硕士,从事有色及贵金属湿法冶金、化工环保水处理技术试验应用研究工作;福建省厦门市翔安火炬产业高新区舫山南路3号,厦门紫金矿冶技术有限公司,361101;E-mail:chenqinggen@zijinmining.com
  • 通讯作者:
  • isnull
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Experimental study on copper removal from high copper content gold-loaded carbon with ferric salt method

  • English Author:
  • State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores&Xiamen Zijin Mining and Metallurgy Technology Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

某高铜载金炭中金品位2.58 kg/t,铜品位50.85 kg/t。针对该载金炭中铜品位高,影响吸附作业的问题,采用铁盐法进行脱铜试验研究,并考察脱铜液再生利用的影响因素。结果表明:采用铁盐法脱铜工艺处理高铜载金炭,在液炭比9∶1,脱铜时间 6 h,脱铜温度25 ℃,氯化铁用量6 kg/t,硫酸用量15 kg/t的条件下,脱铜率可达97.52 %,且金基本不被浸出;脱铜液采用萃取—反萃工艺处理,可实现铜的综合回收,萃余液通过空气氧化后返回脱铜作业循环利用,脱铜率可达到97.46 %。

关键词:

高铜载金炭;铁盐法;氯化铁;脱铜;萃取;脱铜液

Abstract:

The gold grade is 2.58 kg/t and the copper grade is 50.85 kg/t in a high copper content gold-loaded carbon.Since adsorption is affected by the high copper content in the gold-loaded carbon,experimental study is carried out with ferric salt method to remove copper and investigates the factors that influence the regeneration of copper removal solutions.The results show that when copper is removed from the high copper content gold-loaded carbon with ferric salt method and the conditions are:liquid-carbon ratio 9∶1,copper removal time 6 h,copper removal temperature 25 ℃,ferric chloride dosage 6 kg/t,sulfuric acid dosage 15 kg/t,the copper removal rate can reach 97.52 % while gold is hardly leached; copper removal solutions are treated by solvent extraction-reverse extraction process,which can achieve the comprehensive recovery of copper.The raffinate can be recycled to copper removal operation after air oxidation and can still obtain a copper removal rate of 97.46 %.

Keywords:

high copper content gold-loaded carbon;ferric salt method;ferric chloride;copper removal;solvent extraction;copper removal solution