从铜渣中获得工业醋酸铜(Ⅱ)溶液的常压浸出条件和浸出动力学研究
Investigation of atmospheric pressure leaching conditions and leaching kinetics in the obtaining of industrial copper(Ⅱ)acetate solution from copper slags
Zeynel Abidin SARI 1M.Deniz TURAN2
作者信息
- 1. Department of Metallurgy-Iskenderun Vocational School of Higher Education,Iskenderun Technical University,Hatay 31200,Turkey
- 2. Department of Metallurgy and Materials Engineering,Fırat University,Elazığ 23119,Turkey
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摘要
从铜渣中回收有价金属的技术虽然很多,但其经济和环境相容性都不理想.用双氧水和有机酸乙酸研究了铜渣中金属在常压下的溶解行为.该渣为转炉渣和闪速炉渣的混合物,含Cu 6.74%,Zn 4.34%,Fe 36.45%.常规的常压浸出实验在100 mL的玻璃烧杯中进行,在磁力搅拌器中使用涂有聚四氟乙烯的磁性搅拌棒.在最佳浸出条件下,铜提取率为98.04%,锌提取率为28.8%,铁提取率为2%.拉曼光谱显示Cu2+/Zn2+与AcO-(乙酸)存在配位.溶解过程用一级动力学方程描述.表观活化能为23.7 kJ/mol,表明溶解过程受扩散控制.H2O2和CH3COOH的反应级数分别为1.24和0.1.本文提出的湿法冶金新工艺简单、环保,在常规条件下从铜渣中获得醋酸铜溶液的性能明显优于其他方法.
Abstract
Although many technologies have been introduced to recover valuable metals from copper slags,their economic and environmental compatibilities were not satisfactory.The dissolution behaviors of metals from copper slag,were investigated at atmospheric pressure using hydrogen peroxide and acetic acid known as organic acid.The slag was a mixture of converter and flash furnace slag containing 6.74％Cu,4.34％Zn and 36.45％Fe.Conventional leaching experiments in atmospheric pressure were conducted in a 100 mL glass beaker using a teflon coated magnetic stirring bar in the magnetic stirrer.Under the optimum leaching conditions,the metal extractions of 98.04％Cu,28.8％Zn,and 2％Fe were obtained.The Raman spectroscopy revealed the presence of coordination of Cu2+/Zn2+ with AcO-(acetate).The dissolution process was described by the first order kinetics equation.The apparent activation energy of 23.7 kJ/mol suggested that the dissolution process was under diffusion control.The reaction orders for H2O2 and CH3COOH were established to be 1.24 and 0.1,respectively.The proposed new hydrometallurgical process method is simple,environmentally friendly and remarkably superior to other methods in terms of obtaining copper(Ⅱ)acetate solution from copper slag under conventional conditions.
关键词
铜渣/醋酸铜溶液/选择性浸出/过氧化氢/醋酸Key words
copper slag/copper(Ⅱ)acetate solution/selective leaching/hydrogen peroxide/acetic acid引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据