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某焙烧冶炼企业酸性废水综合治理回收试验研究
- 作者：
- 刘影|邱陆明|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
基金项目：
- isnull
详细信息：
- 作者简介：
- 刘影（1985—），女，吉林长春人，工程师，从事黄金矿山环境保护研究工作；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：
- isnull
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Experimental research on comprehensive treatment and recovery of acid wastewater in a roasting and 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.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
某金精矿焙烧冶炼企业产生的酸性废水采用萃取电沉积法回收铜，而大量锌未得到有效回收，造成资源浪费。试验采用氢氧化钠中和沉淀法对酸性废水中的铁进行预去除，之后采用硫化沉淀法回收锌。结果表明：预除铁阶段H2O2投加量为4.0 mL/L，pH值控制在3.6时，Fe去除率可达99.41 %；硫化沉淀阶段在Na2S·9H2O投加量为14.0 g/L，pH值为3.6条件下，Zn回收率接近100.00 %；Zn综合回收率为99.64 %。该研究可为金精矿焙烧冶炼企业酸性废水中金属锌回收的工业化应用提供参考。
关键词:
金精矿；焙烧冶炼；酸性废水；中和沉淀法；硫化沉淀法；锌
Abstract:
A comprehensive treatment of acid wastewater from a gold concentrate roasting and smelting enterprise is implemented with extraction electrodeposition method to recover copper.However,a large amount of zinc is not recovered in the process which is a waste of resources.In the experiment,the iron in wastewater was pre-emoved by sodium hydroxide neutralization precipitation method,and the zinc was recovered with vulcanization precipitation.The results show that the removal rate of iron is 99.41 % when the dosage of H2O2 is 4.0 mL/L,pH is 3.6 in the iron pre-emoval phase;The recovery rate of zinc is near 100.00 % when the dosage of Na2S·9H2O is 14.0 g/L,pH is 3.6;the comprehensive recovery rate of zinc is 99.64 %.The research can be referred to for industrial application of zinc recovery from acid wastewater in gold concentrate roasting and smelting enterprises.
Keywords:
gold concentrate;roasting and smelting;acid wastewater;neutralization precipitation method;vulcanization precipitation method;zinc
