• 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

无氰电镀雷酸金清洗废水回收金试验研究

  • 作者:
  • 徐剑瑛|丁志超|王兵强|王绍娟
  • 作者单位:
  • 山东招金金银精炼有限公司|山东招金金银精炼有限公司|山东招金金银精炼有限公司|山东招金金银精炼有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 徐剑瑛(1993—),男,山东烟台人,助理工程师,从事贵金属检验、检测方法研究工作;山东省招远市金晖路289号,山东招金金银精炼有限公司,265400;E-mail:xujianying.vip@qq.com
  • 通讯作者:
  • isnull
  • PDF下载

Experimental study on gold recovery from gold fulminate cleaning wastewater in cyanide-free electroplating

  • English Author:
  • Shandong Zhaojin Gold & Silver Refinery Co.,Ltd.|Shandong Zhaojin Gold & Silver Refinery Co.,Ltd.|Shandong Zhaojin Gold & Silver Refinery Co.,Ltd.|Shandong Zhaojin Gold & Silver Refinery Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

无氰电镀工艺中,制备雷酸金过程会产生大量含金废水,具有回收利用价值。以水合肼作为还原剂,研究了pH、反应温度、反应时间、水合肼用量等因素对金回收的影响,并在最佳条件下开展了中试试验。结果表明:采用水合肼还原法回收雷酸金清洗废水中金,处理后废水中金质量浓度降至0.25~0.41 mg/L,金回收率97.93 %~99.13 %。该工艺在提高金回收率的同时,极大地改善了工作环境,有效保护了员工身体健康。

关键词:

雷酸金清洗废水;金;无氰电铸;水合肼;金回收率

Abstract:

In cyanide-free electroplating process,the preparation of gold fulminate generates much wastewater that contains a large amount of gold worth recovering.With hydrazine hydrate used as reducing agent,the influence of pH,reaction temperature,reaction time and hydrazine hydrate dosage on the gold recovery is studied,based on which pilot test is carried out under optimal conditions.The results show when hydrazine hydrate reduction is used to recover gold from gold fulminate cleaning wastewater,the gold concentration in the treated wastewater decreases to 0.25-0.41 mg/L,the gold recovery is 97.93 %-99.13 %.Besides gold recovery improvement,the process greatly improves working environment and effectively protects the health of employees.

Keywords:

gold fulminate cleaning wastewater;gold;cyanide-free electroplating;hydrazine hydrate;gold recovery rate