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

다종슬래그를 재활용한 Glass-Ceramic의 제조 및 물성

Lee, Duk-Hee;Shin, Dongyoon;Yoon, Mijung;Park, Hyun Seo;Yoon, Jin-Ho

  • Received : 2016.03.22
  • Accepted : 2016.04.12
  • Published : 2016.05.27


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.


slag;glass-ceramic;cast-basalt;pyro processing


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Supported by : Korea Institute of Energy Technology Evaluation and Planning(KETEP)