摘要
以铜精矿为原料,通过活化预处理,采用超声场辅助矿浆电解的方法直接将铜精矿制备成平均粒度小于10μm的细铜粉。采用高能球磨方法对铜精矿进行预处理,分析了预处理后铜精矿粒度和结构的变化;讨论了电解温度对铜浸出率和铜粉粒度的影响规律;研究了电流密度和超声波对铜粉粒度和比表面积的影响;研究了抗氧化处理后铜粉纯度及形貌的变化。结果表明:铜浸出率和铜粉粒度随着电解温度的升高而增加;电流密度的增加有利于细铜粉的形成;超声波可以明显地改善细铜粉的分散性能;铜粉经油酸和丙酮的表面改性处理后,纯度和抗氧化性能得到提高。
Copper concentrate was adopted in the trial as raw material, fine copper powder which average size is less than 10μm was gained in the slurry electrolysis cell under ultrasonic field and mechanical activation pretreatment. Copper concentrate was pretreated by high energy hall mill. The size and structural of pretreated copper concentrate were analysed. The influence of electrolysis temperature on the copper leaching rate and size were studied. The influence of currentdensity and ultrasonic on the copper powder size and specifc surface area were studied. The purity and shape of copper powder was analysed after antioxidation treatment. The results show that copper leaching rate and copper powder size increase with the increasing of electrolysis temperature; high current density is propitious to the forming of finer copper powder; the dispersivity of copper powder is improved by ultrasonic; the purity and antioxidation performance of copper powder are increased by oleic acid and acetone surface treatment.
出处
《粉末冶金技术》
EI
CAS
CSCD
北大核心
2008年第5期360-364,共5页
Powder Metallurgy Technology
关键词
铜粉
超声
矿浆电解
copper powder
ultrasonic
slurry electrolysis
