| 某冶炼废液中金银的回收 |
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| 引用本文： | 周立红,李广有,周西林.某冶炼废液中金银的回收[J].黄金,2019,40(6):75-77. |
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| 作者姓名： | 周立红 李广有 周西林 |
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| 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 |
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| 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600kg/d,锌粉消耗量0.72kg/d、氢氧化钠消耗量2.4kg/d、室温下反应时间1.0h,可提取金12.03g/d、银30.0g/d。该工艺流程简单,无环境污染,可操作性强。
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| 关 键 词： | 冶炼废液 贵金属 回收 预处理还原法 选择性还原法 |
Recovery of gold and silver from certain smelting waste solution |
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| Zhou Lihong,Li Guangyou,Zhou Xilin.Recovery of gold and silver from certain smelting waste solution[J].Gold,2019,40(6):75-77. |
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| Authors: | Zhou Lihong Li Guangyou Zhou Xilin |
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| Affiliation: | (Sanmenxia Gold Industrial School of Henan Province;Sanmenxia Quality Scientific Research Institute for Nonferrous Metals;Chongqing Academy of Metrology and Quality Inspection) |
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| 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. |
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| Keywords: | smelting waste solution precious metal recovery pre-treatment reduction method selective reduction method |
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