Comparison of effective parameters for copper powder production <Emphasis Type="Italic">via</Emphasis> electrorefining and electrowinning cells and improvement using DOE methods |
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Authors: | Ebrahim Akbarzadeh Sayyed Esmaeil Shakib |
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Institution: | 1.Department of Materials Science and Metallurgical Engineering,Shahid Bahonar University of Kerman,Kerman,Iran |
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Abstract: | The influences of cupric ion concentration (5–35 g/L), current density (500–2000 A/m2), circulation rate of the electrolyte solution (15–120 mL/min), and temperature (25–60°C) on the physical and chemical properties
of copper powders obtained in electrolysis cells were investigated. Two industrial processes, electrorefining (ER) cells with
a synthetic electrolyte and electrowinning (EW) cells with an original solution of copper mineral leaching, were utilized
to produce copper powders. Finally, the statistical full factorial method of design of experiments (DOE) was employed to investigate
the interaction or the main effects of processes. The results show that increasing the copper concentration and temperature
can increase the grain size, apparent density, and electrical energy consumption. On the other hand, increasing the current
density and circulation rate of the electrolyte can decrease them. This production process is optimized via DOE to control the interactive and main effects to produce copper powders with favorable properties. |
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