| 铜烟尘加压浸出工艺研究 |
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| 引用本文： | 范旷生,何贵香,刘平,陈科云.铜烟尘加压浸出工艺研究[J].矿冶工程,2018,38(3):108-110. |
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| 作者姓名： | 范旷生 何贵香 刘平 陈科云 |
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| 作者单位： | 1.桂林理工大学 南宁分校, 广西 南宁 530001;
2.广西冶金研究院, 广西 南宁 530001 |
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| 基金项目： | 广西高校科研中青年教师基础能力提升项目资助(2017KY0248) |
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| 摘 要： | 采用加压酸浸工艺处理铜烟尘, 研究了反应温度、反应时间、初始硫酸浓度、液固比、氧压等对铜、锌浸出率的影响。最佳浸出工艺条件为：初始酸度0.5 mol/L、液固比10∶1、反应温度115 ℃、反应时间2 h、搅拌转速500 r/min、氧压0.4 MPa, 此时Cu、Zn浸出率分别为95.4%和97.6%, Fe、As浸出率分别为6.6%和14.0%, 同时Pb、Ag等有价金属在浸出渣中得到富集, 实现了有价金属的综合回收。
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| 关 键 词： | 铜烟尘 加压浸出 氧压 酸浸 铜 锌 |
| 收稿时间： | 2017-12-05 |
Technique of Pressure Leaching of Copper Dust |
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| FAN Kuang-sheng,HE Gui-xiang,LIU Ping,CHEN Ke-yun.Technique of Pressure Leaching of Copper Dust[J].Mining and Metallurgical Engineering,2018,38(3):108-110. |
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| Authors: | FAN Kuang-sheng HE Gui-xiang LIU Ping CHEN Ke-yun |
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| Affiliation: | 1.Guilin University of Technology at Nanning, Nanning 530001, Guangxi, China;
2.Guangxi Metallurgical Research Institute, Nanning 530001, Guangxi, China |
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| Abstract: | The technique of pressure acid leaching was adopted in the treatment of copper dust, and effects of reaction temperature and time, initial sulfuric acid concentration, liquid/solid ratio and oxygen pressure on the leaching rates of copper and zinc were investigated. It is found that, with the following optimal leaching conditions: an initial sulfuric acid concentration at 0.5 mol/L, liquid/solid ratio of 10∶1, leaching temperature of 115 ℃ and leaching time of 2 h, agitation speed of 500 r/min and oxygen partial pressure of 0.4 MPa, leaching rates of copper and zinc reached 95.4% and 97.6%, respectively, and leaching rate of Fe and As were 6.6% and 14.0%, respectively. Furthermore, the valuable metals of Pb and Ag were all concentrated in the leaching residue, thus a comprehensive recovery of valuable metals was realized by this process. |
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| Keywords: | copper dust pressure leaching oxygen pressure acid leaching copper zinc |
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