Investigation of Leaching Conditions and Leaching Kinetics of Oxidized Copper Ore Malachite at Atmospheric Pressure Using Tartaric Acid Solution

IF 1.6 4区 材料科学 Q2 Materials Science
Feride N. Türk, Hasan Arslanoğlu
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Abstract

In this study, the dissolution conditions and dissolution kinetics of copper from malachite in the presence of organic acid (C4H6O6) as an organic leaching reagent were examined. The effects of particle size, acid concentration, time, solid/liquid ratio, temperature, and mixing speed on the dissolution process of copper were investigated. According to the test results, optimum dissolution conditions are as follows: particle size was 74 µm; organic acid concentration was 0.2 mol/L; duration was 60 min; solid/liquid ratio was 1/10; the temperature was determined as 25 °C and the stirring speed was 300 rpm; and the copper extraction value was obtained as 73.18% under optimum experimental conditions. Kinetic models were applied to the dissolution efficiencies obtained to determine the dissolution kinetics of copper in the presence of organic acid, and it was found that the dissolution process was controlled by the film diffusion model. In light of the data obtained, it can be said that organic acid, which is an economical and environmentally friendly leaching reagent, can be used in the dissolution of copper from malachite \((\text{Cu}(\text{OH}{)}_{2}{\text{CuCO}}_{3})\), as well as in the leaching of other precious metals such as copper, zinc, and cobalt from oxide and carbonate ores.

Abstract Image

常压下使用酒石酸溶液浸出氧化铜矿孔雀石的条件和浸出动力学研究
本研究考察了孔雀石中的铜在有机酸(C4H6O6)作为有机浸出试剂存在下的溶解条件和溶解动力学。研究了粒度、酸浓度、时间、固液比、温度和搅拌速度对铜溶解过程的影响。试验结果表明,最佳溶解条件为:粒度为 74 µm;有机酸浓度为 0.2 mol/L;持续时间为 60 min;固液比为 1/10;温度为 25 °C,搅拌速度为 300 rpm;在最佳实验条件下,铜的提取率为 73.18%。将动力学模型应用于所获得的溶解效率,以确定铜在有机酸存在下的溶解动力学,结果发现溶解过程受膜扩散模型控制。根据所获得的数据,可以说有机酸是一种经济环保的浸出试剂,可用于孔雀石中铜的溶出((text{Cu}(text{OH}{)}_{2}{text{CuCO}}_{3})\),也可用于从氧化物和碳酸盐矿石中浸出铜、锌和钴等其他贵金属。
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来源期刊
Transactions of The Indian Institute of Metals
Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys
CiteScore
2.60
自引率
6.20%
发文量
3
期刊介绍: Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.
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