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某黄金冶炼企业高浓度含氰洗涤水净化技术研究

  • 作者:
  • 刘影|邱陆明|崔崇龙|迟崇哲|降向正
  • 作者单位:
  • 长春黄金研究院有限公司|长春黄金研究院有限公司|长春黄金研究院有限公司|长春黄金研究院有限公司|长春黄金研究院有限公司
  • 基金项目:

  • 国家重点研发计划项目(2018YFC1902001)
  • 详细信息:

  • 作者简介:
  • 刘影(1985—),女,吉林长春人,高级工程师,从事黄金矿山含氰废水、废渣处理工作;长春市南湖大路6760号,长春黄金研究院有限公司环境保护研究所,130012;E-mail:1030061870@qq.com
  • 通讯作者:
  • E-mail:hbsccz@sohu.com,13596151686
  • PDF下载

Technical research on purification of high concentration Cyanide-containing washing water in a gold smelting enterprise

  • English Author:
  • Changchun Gold Research Institute Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.|Changchun Gold Research Institute Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

以某黄金冶炼企业含高浓度铁氰络合物和铜氰络合物的氰化尾渣洗涤水为处理对象,采用“酸化沉铜—亚铁盐沉氰—中和”和“硫化沉铜—亚铁盐沉氰—中和”工艺对洗涤水中氰化物进行净化,对最佳试验参数进行考察,并对2种工艺进行对比。在最佳条件下,2种工艺最终处理后洗涤水中总氰化合物质量浓度低于50 mg/L,铜质量浓度低于20 mg/L,铁质量浓度低于50 mg/L,达到洗涤回用水质要求。2种工艺均可实现铁氰络合物和铜氰络合物的高效分离,回收有价金属铜的同时,深度去除废水中氰化物,但工艺需严格控制反应条件,对反应设备和管理要求较高。

关键词:

含氰废水;酸化沉铜;硫化沉铜;亚铁盐沉淀法;硫酸亚铁

Abstract:


The cyanide tailings washing water containing a high concentration of ferricyanide complex and copper cyanide complex in a gold smelting enterprise was used as the treatment object to purify the cyanide in washing water by the processes of copper precipitation by acidification-cyanide precipitation from ferrous salt-neutralization and copper precipitation by sulfuration-cyanide precipitation from ferrous salt-neutralization.The optimal test parameters were investigated and the 2 processes were compared.Under the optimal conditions,the total cyanide mass concentration in the washing water was less than 50 mg/L,the copper mass concentration was less than 20 mg/L,and iron mass concentration was less than 50 mg/L,meeting the requirements of the process reuse standards.The 2 processes both can achieve effective separation of ferricyanide complex and copper cyanide complex,recovering valuable metal copper while deeply removing cyanide from wastewater.However,the reaction conditions should be strictly controlled in the process and the reaction equipment and management are demanding.


Keywords:

cyanide-containing wastewater;copper precipitation by acidification;copper precipitation by sulfuration;ferrous salt precipitation method;ferrous sulfate