含铜硫化渣加压浸出回收有价金属  

Pressure Leaching for Recovery of Valuable Metals from Copper-containing Sulfide Slag

作　　者：聂思怡 李田玉 全温灿 徐志峰 王瑞祥[1,2] 张忠堂 严康[1,2] NIE Siyi;LI Tianyu;QUAN Wencan;XU Zhifeng;WANG Ruixiang;ZHANG Zhongtang;YAN Kang(Institute of Green Metallurgy and Process Intensification,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Engineering Technology Research Center of Green Metallurgy and Process Intensification,Ganzhou 341000,Jiangxi,China;Heilongjiang Zijin Copper Co.,Ltd.,Qiqihar 161000,Heilongjiang,China;School of Material Engineering,Jiangxi College of Applied Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学,绿色冶金与过程强化研究所,江西赣州341000 [2]赣州市绿色冶金与过程强化工程技术研究中心,江西赣州341000 [3]黑龙江紫金铜业有限公司,黑龙江齐齐哈尔161000 [4]江西应用技术职业学院,江西赣州341000

出　　处：《有色金属（冶炼部分）》2024年第10期49-57,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2023YFC2907901);江西省自然科学基金面上项目(20232BAB204036);江西省科学技术厅江西省主要学科学术和技术带头人培养计划青年人才项目(2021BCJL23052);赣鄱俊才支持计划·青年科技人才托举项目(2024QT06);国家自然科学基金资助项目(52464047)。

摘　　要：采用加压浸出工艺处理含铜硫化渣,通过试验探究了初始硫酸浓度、浸出温度、液固比、氧分压和浸出时间等对渣中Co、Ni、Mn、Li、Al及Cu浸出率的影响。结果表明,最优条件为:初始酸浓度120 g/L、浸出温度140℃、液固比5 mL/g、氧分压1.1 MPa、浸出时间3 h。在最优条件下,含铜硫化渣中主要金属Co、Ni、Mn、Li、Al及Cu的一次浸出率分别为99.80%、99.10%、98.42%、98.49%、93.89%和96.91%。表明含铜硫化渣基本完全消解,实现有价金属的综合浸出。此外,通过将一次浸出液经过3次循环加压浸出,实现了Al和Cu的水解脱除。The pressure leaching process was employed to treat the copper-containing sulfide slag.The effects of initial sulfuric acid concentration,leaching temperature,liquid-solid ratio(L S),oxygen partial pressure,and leaching time on the leaching efficiency of Co,Ni,Mn,Li,Al and Cu in the slag were examined through experiments.The resuls show that the single-step leaching rate of Co,Ni,Mn,Li,Al and Cu in the copper-containing sulfide slag is 99.80%,99.10%,98.42%,98.49%,93.89%and 96.91%,respectively under the optimal conditions including initial sulfuric acid concentration of 120 g L,leaching temperature of 140℃,L S of 5 mL g,oxygen partial pressure of 1.1 MPa,and leaching time of three hours.The results show that the copper-containing sulfide slag is basically completely dissolved and the comprehensive leaching of valuable metals is realized.In addition,the hydrolysis removal of Al and Cu is achieved through three rounds of pressure leaching of the initial leaching solution.

关 键 词：加压浸出 硫化渣 铜 钴 

分 类 号：TF811[冶金工程—有色金属冶金] TF816[环境科学与工程—环境工程] X758