利用焦炭和生物炭从铜冶炼渣中回收金属

IF 2.5 3区材料科学 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Journal of Sustainable Metallurgy Pub Date : 2024-02-29 DOI:10.1007/s40831-024-00793-7

Min Chen, Dmitry Sukhomlinov, Pekka Taskinen, Joseph Hamuyuni, Radoslaw M. Michallik, Mari Lindgren, Ari Jokilaakso

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摘要

为了回收金属值，本研究采用等温还原/滴淬技术，在 1250 °C 的氩气环境下用焦炭和生物炭还原铜渣。采用电子探针显微分析法（EPMA）测定了金属、锍和渣的相组成。研究了还原时间和还原剂用量的影响。根据 EPMA 测定的元素浓度，确定了金属/锍和熔渣之间的元素分布。研究发现，焦炭和生物炭可在 5 分钟内将炉渣中的铜浓度有效降至约 0.4-0.6 wt%。沉降完成后，铜和镍也可成功回收到铜合金相中。

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Recovery of Metals from Copper Smelting Slag Using Coke and Biochar

With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 °C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of reduction time and amount of reductant were investigated. The distribution of elements between metal/matte and slag was ascertained based on the elemental concentrations determined by EPMA. It was found that copper concentration in slag can be effectively decreased to approximately 0.4–0.6 wt% within 5 min by coke and biochar. Copper and nickel can also be successfully recovered into the copper alloy phase once settling has been accomplished.

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来源期刊

Journal of Sustainable Metallurgy Materials Science-Metals and Alloys

CiteScore

4.00

自引率

12.50%

发文量

151

期刊介绍： Journal of Sustainable Metallurgy is dedicated to presenting metallurgical processes and related research aimed at improving the sustainability of metal-producing industries, with a particular emphasis on materials recovery, reuse, and recycling. Its editorial scope encompasses new techniques, as well as optimization of existing processes, including utilization, treatment, and management of metallurgically generated residues. Articles on non-technical barriers and drivers that can affect sustainability will also be considered.