Abstract：The electrolytic copper powder was prepared by using a new type of electrolytic cell with parallel feed device under the condition of total flow rate of 18 L/min. The effects of electrolyte feeding mode on cell voltage, current efficiency, energy consumption and copper powder properties were studied. The energy saving and consumption reduction of copper powder electrolysis process were also explored. The results show that the energy consumption is 3.01×106 kJ/t, the current efficiency is 94.42%, the particle size of copper powder is 3.47 μm, and the particle size distribution is concentrated by wing traditional injection method. The cell voltage and energy consumption of electrolysis process can be effectively reduced by using the traditional mode of parallel and bilateral flow. With the increase of the flow rate of bilateral parallel flow, the current efficiency increases and the energy consumption decreases, but the particle size of copper powder increases. When the flow rate of the spray nozzle is 6 L/min, the electrolysis energy consumption of 2.55×106 kJ/t is low, the average particle size of copper powder is 4.65 μm, the particle size of more than 95% copper powder is less than 7.2 μm, and the copper powder has obvious dendritic structure. There is no obvious difference in the properties of copper powder obtained from traditional electrolysis. When the nozzle flow rate further increases to 9 L/min, the energy consumption of electrolysis decreases to 2.17×106 kJ/t, and the current efficiency increases to 96.95%, but the particle size of copper powder increases to 45.76 μm, and the particle size distribution is obviously graded.
向小艳, 夏文堂, 杨文强, 尹建国. 电解液循环方式对电解能耗及铜粉性能的影响[J]. 粉末冶金材料科学与工程, 2019, 24(1): 21-26.
XIANG Xiaoyan, XIA Wentang, YANG Wenqiang, YIN Jianguo. Effects of electrolyte circulation form on energy consumption and properties of electrolytic copper powder. Materials Science and Engineering of Powder Metallurgy, 2019, 24(1): 21-26.
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