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유리생산공정 폐주석산화물에서 건식제련에 의한 주석회수기술

Recovery of Tin from Tin Oxide Resulted from Glass Manufacturing Process by Pyrometallurgy

  • 이상로 (목포대학교 공과대학 신소재공학과) ;
  • 김상열 ((주)에이원엔지니어링) ;
  • 이만승 (목포대학교 공과대학 신소재공학과) ;
  • 박만복 (순천대학교 산학협력단)
  • Lee, Sang-Ro (Dept. of Advanced Materials Science&Engineering, MokPo National University) ;
  • Kim, Sang-Yeol (A1 engineering Inc.) ;
  • Lee, Man-Seung (Dept. of Advanced Materials Science&Engineering, MokPo National University) ;
  • Park, Man-Bok (Foundation of University-Industry Cooperation, Sunchon National University)
  • 투고 : 2014.12.19
  • 심사 : 2015.01.20
  • 발행 : 2015.04.30

초록

현재 국내에서 소비되는 주석의 대부분은 수입에 의존하고 있다. 본 연구에서는 평판 유리, LCD 패널 유리 기판 생산시 발생하는 주석 용탕에 함유된 주석산화물을 건식법으로 회수하는 공정을 조사하였다. 환원반응온도를 변화시키며 주석의 회수율을 조사한 결과 $1350^{\circ}C$에서 최대 회수율을 얻을 수 있었다. 또한 주석 산화물의 1차 제련과 슬래그의 2차 제련을 통해 88%의 회수율을 얻었다. 건식공정으로 회수된 조주석을 전해정련처리하여 99.9%의 순도를 지닌 주석 금속을 제조하였다.

Most of the domestic need for tin rely on imports. In this work, a pyrometallurgical process was investigated to recover pure tin from the tin oxides in tin bath which results from the production of flat glass and LCD panel. From the results on the effect of reaction temperature, the highest recovery percentage of tin was obtained at $1350^{\circ}C$. The recovery percentage of tin was improved to 88% by employing the first and second smelting step. Electrorefining of the crude tin thus obtained led to pure tin with purity higher than 99.9%.

키워드

참고문헌

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