甘氨酸浸出金属铜的行为特性及动力学机制研究

现代矿业 ›› 2025, Vol. 41 ›› Issue (05): 93-97.

甘氨酸浸出金属铜的行为特性及动力学机制研究

单浩轩^1，2 赵留成^1，2，3李绍英^1，2，3尹佳欣^1，2 李丁丁^1，2 张雅宁¹ 秦建秋¹ 赵礼兵¹

1. 华北理工大学矿业工程学院；2. 矿产资源绿色开发与生态修复协同创新中心； 3. 河北省矿业开发与安全技术重点实验室

出版日期:2025-05-25 发布日期:2025-07-30

Study on the Behavior characteristics and Kinetic Mechanism of Copper Laching by Glycine

1. North China University of Science and Technology School of Mining Engineering； 2. Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources； 3. Hebei Province Key Laboratory of Mining Development and Security Technology

Online:2025-05-25 Published:2025-07-30

摘要/Abstract

摘要： 为了探讨甘氨酸浸出金属铜的行为特性及动力学机制，系统探究了浸出温度、甘氨酸浓度、搅拌速度等因素对铜浸出行为的影响，构建了甘氨酸浸铜动力学模型。研究结果表明：浸出温度和甘氨酸浓度对铜浸出率及浸出速度具有显著影响；在浸出温度60℃、甘氨酸浓度0.5 mol/L、搅拌转速 400 r/min、浸出时间 48 h的条件下，铜浸出率达 99%以上；浸出过程符合收缩核模型，铜颗粒由外向内逐渐溶蚀，表面由光滑圆润逐渐变得凹凸粗糙，但仍保持球形轮廓。动力学分析表明，反应表观活化能为51.5 kJ/mol，属于化学控制过程，甘氨酸和搅拌速度的反应级数分别为2.0和0.8。该研究为电子废弃物中铜资源的清洁高效回收提供了理论基础。

关键词: 甘氨酸, 金属铜, 浸出行为, 动力学机制, 收缩核模型

Abstract: In order to explore the behavior characteristics and kinetic mechanism of copper leaching by glycine，the effects of leaching temperature，glycine concentration and stirring speed on copper leaching behavior were systematically investigated，and the kinetic model of copper leaching by glycine was con⁃ structed. The results show that the leaching temperature and glycine concentration have a significant effect on the copper leaching rate and leaching frequency. Under the conditions of leaching temperature of 60 ℃， glycine concentration of 0.5 mol/L，stirring speed of 400 r/min and leaching time of 48 h，the leaching rate of copper is more than 99%. The leaching process conforms to the shrinking core model. The copper parti⁃ cles gradually dissolve from the outside to the inside，and the surface gradually becomes concave and rough from smooth and round，but still maintains a spherical profile. The kinetic analysis showed that the apparent activation energy of the reaction was 51.5 kJ/mol，which belonged to the chemical control process. The reac⁃ tion orders of glycine and stirring speed are 2.0 and 0.8，respectively. This study provides a theoretical basis for the clean and efficient recovery of copper resources in e-waste.

Key words: glycine, metal copper, leaching behavior, kinetic mechanism, shrinking core model

单浩轩, 赵留成, 李绍英, 尹佳欣, 李丁丁, 张雅宁, 秦建秋, 赵礼兵. 甘氨酸浸出金属铜的行为特性及动力学机制研究[J]. 现代矿业, 2025, 41(05): 93-97.

SHAN Haoxuan, ZHAO Liucheng, LI Shaoying, YIN Jiaxin, LI Dingding, ZHANG Yaning QIN Jianqiu ZHAO Libing. Study on the Behavior characteristics and Kinetic Mechanism of Copper Laching by Glycine[J]. Modern Mining, 2025, 41(05): 93-97.

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