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| Study on the influence of process conditions on energy consumption in electrolytic copper powder process |
| WANG Hong-dan, XIA Wen-tang, REN Bing-zhi, SUN Ya-feng, DENG You-ming |
| School of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China |
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Abstract Electrolytic process has the highest energy consumption in copper powder production, and process conditions have an important impact on electrolytic energy consumption, which needs in-depth research and optimization. Copper powder was prepared by electrolysis. The effects of interelectrode gap, Cu 2＋ concentration, sulfuric acid concentration, electrolyte temperature, current density and scraping period on cell voltage, current efficiency and DC power consumption in electrolytic copper powder process were studied. The results show that increasing Cu 2＋concentration, electrolyte temperature and powder scraping period are conducive to reducing cell voltage and improving current efficiency, thus reducing DC power consumption. The cell voltage, current efficiency and DC power consumption of electrolytic copper powder increase when the interelectrode gap is increased. However, when the concentration of sulfuric acid is increased, the cell voltage, current efficiency and DC power consumption of electrolytic copper powder are reduced. When the current density is increased, the cell voltage of electrolytic copper powder is significantly increased and the current efficiency is slightly decreased, resulting in a significant increase in DC power consumption. The optimum process parameters of electrolytic copper powder are: interelectrode gap 20-40 mm, Cu 2＋ concentration 10-15 g/L, sulfuric acid concentration 150 g/L, electrolyte temperature 40-50 ℃, current density 1 500 A/m2, and powder scraping period 45 min.
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Received: 17 November 2017
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Corresponding Authors:
任兵芝（1982—），男，博士，讲师，主要从事冶金单元过程模拟仿真优化研究。
E-mail: hongdan520@126.com
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2019, Vol. 29 
