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| 氧化氨浸工艺回收硫化砷渣中的铜 | |
| 引用本文： | 肖红霞, 李任, 杜冬云. 氧化氨浸工艺回收硫化砷渣中的铜[J]. 环境工程学报, 2016, 10(2): 893-898. doi: 10.12030/j.cjee.20160260 |
| 作者姓名： | 肖红霞 李任 杜冬云 |
| 作者单位： | 1.中南民族大学环境科学与工程研究所, 中南民族大学资源与环境学院/催化材料 科学国家民委-教育部共建重点实验室, 武汉 430074 |
| 基金项目： | 湖北省科技支撑计划项目(2014BEC029) |
| 摘 要： | 对在(NH4)2S2O8-NH3-H2O体系中氧化浸出硫化砷渣(砷渣)中的铜进行热力学分析;讨论了浸出温度、c(NH3 )/c(NH4+)、液固比、浸出时间及总氨浓度对铜浸出率的影响,确定了从砷渣中回收铜最佳浸出工艺条件;采用XRD和SEM对浸出渣进行表征。结果表明,氧化氨浸回收铜工艺具有热力学可行性;在浸出温度35 ℃, c(NH3 )/c(NH4+)1:7,液固比6:1,浸出时间3 h,总氨浓度4 mol/L的条件下,铜的浸出率为70.74%;大量S0均匀分布在浸出渣中。 |
| 关 键 词： | 硫化砷渣 热力学 氧化氨浸 过硫酸铵 铜 |
| 收稿时间： | 2014-12-22 |
Recovery of copper from arsenic sulfide residue by oxidizing ammonium leaching |
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| Xiao Hongxia, Li Ren, Du Dongyun. Recovery of copper from arsenic sulfide residue by oxidizing ammonium leaching[J]. Chinese Journal of Environmental Engineering, 2016, 10(2): 893-898. doi: 10.12030/j.cjee.20160260 | |
| Authors: | Xiao Hongxia Li Ren Du Dongyun |
| Affiliation: | 1.Institute of Environmental Science and Engineering, School of Resources and Environmental Science, Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China |
| Abstract: | The thermodynamics of oxidized leaching copper from arsenic sulfide residue(ASR) in mixing solution system of (NH4)2S2O8-NH3-H2O was analyzed. The effects of different parameters on the leaching of copper, including temperature, the ratio of c(NH3 )/c(NH4+), liquid-to-solid ratio, leaching time and total ammonia concentration, were investigated and its optimum parameters were determined. The leaching residue was characterized by XRD and SEM. The results showed that the oxidizing ammonia leaching method had thermodynamics feasibility. The leaching rate of copper was 70.74% with temperature of 35 ℃,c(NH3):c(NH4+) of 1:7, liquid-to-solid ratio of 6:1, leaching time of 3 h, the total ammonia concentration of 4 mol/L. The leaching residue was mainly composed of S0. |
| Keywords: | arsenic sulfide residue thermodynamics oxidizing ammonium leaching ammonium persulfate copper |
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