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Preparation of Glass-Ceramic by Recycling of Various Slags and Its Properties

다종슬래그를 재활용한 Glass-Ceramic의 제조 및 물성

  • Lee, Duk-Hee (Advanced Materials & Processing Center, Institute for Advanced Engineering) ;
  • Shin, Dongyoon (Advanced Materials & Processing Center, Institute for Advanced Engineering) ;
  • Yoon, Mijung (Dongdo Basalt Ind. Co.) ;
  • Park, Hyun Seo (Technical Research Laboratories Gwangyang Research Lab., POSCO) ;
  • Yoon, Jin-Ho (Advanced Materials & Processing Center, Institute for Advanced Engineering)
  • 이덕희 (고등기술연구원 신소재공정센터) ;
  • 신동윤 (고등기술연구원 신소재공정센터) ;
  • 윤미정 ((주)동도바잘트) ;
  • 박현서 (포스코 광양 기술연구소) ;
  • 윤진호 (고등기술연구원 신소재공정센터)
  • Received : 2016.03.22
  • Accepted : 2016.04.12
  • Published : 2016.05.27

Abstract

Glass-ceramics were developed many years ago and have been applied in many fields such as electronics, chemistry, optics, etc. Much is already known about glass-ceramic technology, but many challenges in glass-ceramic research are still unresolved. Recently, large amounts of slag have steadily increased in the steel industry as by-products. To promote recycling of industrial waste, including steel industry slags, many studies have been performed on the fabrication of basalt-based high-strength glass-ceramics. In this study, we have fabricated such ceramics using various slags to replace high performance cast-basalt, which is currently imported. Glass-ceramic material was prepared in similar chemical compositions with commercial cast-basalt through a pyro process using slags and power plant by-product (Fe-Ni slag, converter slag, dephosphorization slag, Fly ash). The properties of the glass-ceramic material were characterized using DTA, XRD, and FE-SEM; measurements of compressive strength, Vicker's hardness, and abrasion were carefully performed. It is found that the prepared glass-ceramic material showed better performance than that of commercial cast-basalt.

Keywords

References

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