| 高铬混合型电镀污泥酸浸回收有价金属及其反应动力学 |
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| 引用本文： | 徐喆,羌志文,吕晋芳,孔令宇,魏民. 高铬混合型电镀污泥酸浸回收有价金属及其反应动力学[J]. 矿冶, 2023, 32(5): 94-98 |
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| 作者姓名： | 徐喆 羌志文 吕晋芳 孔令宇 魏民 |
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| 作者单位： | 昆明理工大学国土资源工程学院,昆明理工大学国土资源工程学院,昆明理工大学国土资源工程学院,昆明理工大学国土资源工程学院,昆明理工大学国土资源工程学院 |
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| 基金项目： | 国家自然科学(52264028,51904129)；云南省“兴滇英才支持计划”青年人才项目(KKRD202221039)；云南省大学生创新创业训练计划项目(202110674003)。 |
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| 摘 要： | 采用硫酸为浸出剂，浸出高铬混合型电镀污泥中的有价金属铬、镍、铜、锌。结果表明，常温条件下，当硫酸浓度为4 mol/L、固液比为1∶10、反应时间为75 min时，污泥中铬、镍、铜、锌的浸出率分别可达94.2%、96.5%、92.9%、95.3%。反应动力学分析结果表明，硫酸浸出电镀污泥中铬、铜、锌时受界面传质和固体膜层扩散共同控制，而浸出镍时主要受化学反应控制。
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| 关 键 词： | 高铬电镀污泥 有价金属 酸浸 浸出动力学 |
| 收稿时间： | 2023-05-24 |
| 修稿时间： | 2023-06-05 |
Recovery of valuable metals by acid leaching of high chromium electroplating sludge and reaction kinetics analysis |
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| XU Zhe,QIANG Zhiwen,LV Jinfang,KONG Lingyu and WEI Min. Recovery of valuable metals by acid leaching of high chromium electroplating sludge and reaction kinetics analysis[J]. Mining & Metallurgy, 2023, 32(5): 94-98 |
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| Authors: | XU Zhe QIANG Zhiwen LV Jinfang KONG Lingyu WEI Min |
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| Affiliation: | Faculty of Land Resource Engineering,Kunming University of Science and Technology,Yunnan,Kunming,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Yunnan,Kunming,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Yunnan,Kunming,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Yunnan,Kunming,Faculty of Land Resource Engineering,Kunming University of Science and Technology,Yunnan,Kunming |
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| Abstract: | Chromium, nickel, copper and zinc were extracted from high chromium electroplating sludge with sulfuric acid as leaching reagent. Under room temperature conditions, the leaching ratios of chromium, nickel, copper and zinc in sludge reached 94.2%, 96.5%, 92.9% and 95.3%, respectively, when the sulfuric acid concentration was 4mol/L, the ratio of solid to liquid was 1:10 and the reaction time was 75min. The kinetic analysis showed that chromium, copper and zinc were controlled by interfacial mass transfer and solid film diffusion, while nickel was controlled by chemical reaction. |
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| Keywords: | High chromium electroplating sludge Valuable metals Acid leaching Leaching kinetic |
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