• captcha

中国科技核心期刊

美国化学文摘社(CAS)数据库

美国EBSCO学术数据库

日本科学技术振兴机构数据库(JST)

期刊导读

首页   >    安全与环保

某冶炼废液中金银的回收

  • 周立红|李广有|周西林
  • 作者单位:
  • 河南省三门峡黄金工业学校|三门峡市有色金属科学质量研究所|重庆市计量质量检测研究院
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 周立红(1965—),女,湖南湘阴人,工程师,主要从事贵金属及有色金属产品分析检测及化验员理论实操培训工作;河南省三门峡市上阳南路,河南省三门峡黄金工业学校,472000;E-mail:715740153@qq.com
  • 通讯作者:
  • isnull
  • 此文档没有上传!

Recovery of gold and silver from certain smelting waste solution

  • English Author:
  • Sanmenxia Gold Industrial School of Henan Province|Sanmenxia Quality Scientific Research Institute for Nonferrous Metals|Chongqing Academy of Metrology and Quality Inspection
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

某黄金冶炼厂冶炼废液中含有金、银等贵金属离子,直接外排不仅浪费资源,还会造成环境污染。试验采用金属置换还原法进行金、银的回收,并对选择性还原法和预处理还原法进行对比,确定最佳处理方法及条件。采用预处理还原法进行工业应用表明,冶炼废液处理量600 kg/d,锌粉消耗量0.72 kg/d、氢氧化钠消耗量2.4 kg/d、室温下反应时间1.0 h,可提取金12.03 g/d、银30.0 g/d。该工艺流程简单,无环境污染,可操作性强。

关键词:

冶炼废液;贵金属;回收;预处理还原法;选择性还原法

Abstract:

The smelting waste solution of a gold smeltery contains precious metal ions such as gold and silver.So if the solution is directly discharged,it will be a waste of resources and cause environmental pollution.Therefore,the experiment used metal replacement reduction method to recover gold and silver,compared selective reduction and pre-treatment reduction,and determined optimum treatment method and conditions.The industrial application of pretreatment reduction shows that when smelting waste solution treatment capacity is 600 kg/d,zinc powder consumption is 0.72 kg/d,sodium hydroxide consumption is 2.4 kg/d,reaction time in room temperature is 1.0 h,the gold and silver recovery can be 12.03 g/d and 30.0 g/d respectively.The process has simple flowsheet,no environmental pollution and good operability.

Keywords:

smelting waste solution;precious metal;recovery;pretreatment reduction method;selective reduction method