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The Effect of Arsenic on Copper Electrodeposition in Copper-Sulfate Solutions in Copper-Electrorefining

동 전해정련시 황산구리 수용액 중의 Arsenic이 구리의 전해전착에 미치는 영향

  • Kim, Do-Hyung (School of Materials Science and Engineering, Pusan National University) ;
  • Kim, Yong-Hwan (School of Materials Science and Engineering, Pusan National University) ;
  • Chung, Won-Sub (School of Materials Science and Engineering, Pusan National University)
  • Published : 2009.06.30

Abstract

The effect of Arsenic in copper-sulfate solutions during electrorefining of copper was investigated using scanning electron microscopy, X-ray diffraction and cyclic voltammetry analysis. Electrodeposition was carried out using Arsenic, Antimony and bismuth addition to sulfate electrolytes: 45 g/l $Cu^{2+}$ and 170 g/l $H_2SO_4$. Arsenic in sulfate electrolytes changed the morphology and structure of the copper deposits as compared with those obtained from impurity free solutions. When arsenic was present in the sulfate electrolytes, $Cu-3$As intermetallic phase was formed locally on the deposits.

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