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Recovery of High Purity Tin from Waste Solution of the Tin Plating by Ion-exchange and Cyclone-electrowinning

주석도금폐액으로부터 이온교환 및 사이클론 전해채취를 이용한 고순도 주석의 회수

  • Kang, Yong-Ho (Research & Development Center, Incheon Chemical Ltd.) ;
  • Shin, Gi-Wung (Research & Development Center, Incheon Chemical Ltd.) ;
  • Ahn, Jae-Woo (Department of Advanced Materials Sci. & Eng., Daejin University)
  • Received : 2016.05.27
  • Accepted : 2016.07.07
  • Published : 2016.08.31

Abstract

A research for the recovery of the metal with high purity from the waste tin plating solution was carried out. First, tin plating waste solution was tested to remove the organic substances and metallic impurities such as Fe, Zn, Na etc. using ion exchange resin having iminodiacetic functional groups (Lewatit TP 207). Second, the tin solution was purified to obtain the high purity tin solution using ion exchange resin having ethylhexyl-phosphate functional groups (Lewatit VPOC 1026). Finally, 99.98% of the high purity of tin metal can be recovered from the purified solution by cyclone type electrowinning method.

주석도금폐액으로부터 고순도 주석 금속을 회수하는 연구를 실시하였다. 먼저 주석도금폐액을 Iminodiacetic 관능기를 가진 이온교환수지(Lewatit TP 207)를 사용하여 1차적으로 유기물 및 Fe, Zn, Na 등의 불순물을 제거하였고, 2차적으로 Ethylhexyl-phosphate의 관능기를 가진 이온교환수지(Lewatit VPOC 1026)를 사용하여 잔류하고 있는 불순물들을 모두 제거하여 고순도의 주석용액으로 회수하였다. 회수된 주석용액으로부터 고순도 금속주석으로 회수하기 위하여 사이클론식 전해방법을 사용하였으며, 전해채취 결과 약 99.98% 순도의 주석을 회수할 수 있었다.

Keywords

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