재활용 천연광물 연마재의 연마성능

Ability of the Natural Abrasives Recovered from Sludge

  • 조성백 (한국지질자원연구원 광물자원연구본부) ;
  • 서명덕 (한국지질자원연구원 광물자원연구본부) ;
  • 조건준 (한국지질자원연구원 광물자원연구본부) ;
  • 이수정 (한국지질자원연구원 광물자원연구본부)
  • Cho, Sung-Baek (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Seo, Myeong-Deok (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Cho, Keon-Joon (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Su-Jeong (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
  • 발행 : 2009.12.30

초록

CRT 브라운관 패널의 연마과정에서 배출되는 폐연마슬러지로부터 석류석 등의 연마재를 회수하고, 연마성능을 평가하였다. 재활용 부석과 석류석으로 연마한 유리의 평균표면거칠기값(Ra = $0.025{\mu}m$, = $0.029{\mu}m$)은 새 연마재로 연마한 유리에서의 값(Ra = $0.039{\mu}m$, $0.031{\mu}m$)보다 작았으며 표면의 선이나 홈도 적었다. 루즈의 경우 유리 파편이 혼입되어 연마재로 재활용하기에는 적합하지 않다. 본 기술을 이용하여 폐연마슬러지에 함유된 천연연마재 광물자원인 부석과 석류석을 회수한다면 CRT 유리 연마공정에서 재활용할 수 있고, 슬러지 매립으로 발생되는 처리비용과 환경오염문제를 줄일 수 있을 것이다.

The ability of natural abrasives which were recovered from CRT glass polishing process was evaluated. Comparing the center line average roughness values of a glass polished with new pumice (Ra = $0.039{\mu}m$) and with new garnet (Ra = $0.031{\mu}m$), the glass surface polished with the recycled pumice and the garnet had less pits on the surface with smaller Ra values (Ra = $0.025{\mu}m$ for recycled pumice and Ra = 0.029 for recycled garnet). Recycled rouge contains amorphous glass fragments so that it should be used as a cement replacement rather than recycle into an abrasive. Nnatural abrasives, pumice and garnet powder, which are used in CRT glass polishing process can be recycled into abrasives so that it can help to minimize costs and environmental impact from the production of abrasives and the disposal of waste sludge.

키워드

참고문헌

  1. 추용식, 이종규, 김원기, 심광보 (2003) 유리연마슬러지를 사용한 단열골재 제조에 관한 연구, 한국폐기물학회지, 20, 765-772
  2. Cook, L.M. (1990) Chemical processes in glass polishing, J. Non-Cryst. Sol., 120, 152-171 https://doi.org/10.1016/0022-3093(90)90200-6
  3. Kasai, T., Horio, K., Yamazaki, T., Komoda, M., Doy, T.K., and Kubo, N. (1994) Polishing to reveal microdefects on glass, J. Non-Cryst. Sol., 17, 397-404 https://doi.org/10.1016/0022-3093(94)90554-1
  4. Kim, Y.-J., Kim S.-B., Park H.-H., and Cho, S.-B. (2007) Effect of disagglomeration on the recovery of abrasives from waste ludge, Geosystem Eng., 10, 37-40 https://doi.org/10.1080/12269328.2007.10541270
  5. Mear, F., Yot, P., Cambon, M., and Ribes, M. (2006) The characterization of waste cathode-ray tube glass, Waste Management, 26, 1468-1476 https://doi.org/10.1016/j.wasman.2005.11.017
  6. Stephen, E., M., Jang, Y.-C., Townsend, T. G., and Chung, I.-H. (2000) Characterization of lead leachability from cathode ray tubes using the toxicity characteristic leaching procedure, Environ. Sci. Technol., 34, 4376-4381 https://doi.org/10.1021/es0009020