超声场辅助矿浆电解法制备超细铜粉

来源期刊:中国有色金属学报2008年第7期

论文作者:刘维平 邱定蕃 于月光

文章页码:1347 - 1347

关键词:超细铜粉;超声场;矿浆电解

Key words:ultrafine copper powder; ultrasonic field; slurry electrolysis

摘    要:

采用铜精矿为原料,通过机械活化和超声场的辅助作用,直接在矿浆电解槽中将铜精矿制备成平均粒度小于10 μm的超细铜粉。分析矿浆电解制备超细铜粉的基本原理,研究电流密度和超声波对超细铜粉粒度和形貌的影响。结果表明:提高电流密度有利于超细铜粉的形成,随着电流密度的增加,铜粉粒度不断下降,比表面积不断上升;与未经超声处理相比,采用超声场辅助矿浆电解法制备得到的铜粉粒度趋于下降,比表面积上升,且随着超声时间的延长,粒度下降越多,比表面积增加越大。

Abstract: Using copper concentrate as raw material, ultrafine copper powder by using slurry electrolysis with average size of less than 10 μm was gained in the slurry electrolysis cell under ultrasonic field and mechanical activation pretreatment. The basic principle of using slurry electrolysis to prepare ultrafine copper powder was briefly analyzed, and the influence of current density and ultrasonic on the size and shape of ultrafine copper powder were studied. The results show that high current density is propitious to the forming of ultrafine copper powder, the particle size of copper powder decreases and the specific surface area increases with increasing current density. Compared with the non-ultrasonic process, the size of copper powder produced by slurry electrolysis under ultrasonic field decreases, and the specific surface area increases. The particle size of copper powder decreases more while the specific surface area increases more with prolonging ultrasonic treating time.

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