화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.27, No.5, 281-288, May, 2017
DOI10.3740/MRSK.2017.27.5.281  Export Citation
철강산업 슬래그를 이용하여 제조한 바잘트 소재의 특성
Characteristics of Basalt Materials Derived from Recycling Steel Industry Slags
정우광†, 백구슬1, 윤미정2, 이지욱
  • 국민대학교 신소재공학부
  • 1국민대학교 대학원 신소재공학과
  • 2동도바잘트산업(주)
Woo-Gwang Jung†, Gu-Seul Back1, Mi-Jung Yoon2, and Jee-Wook Lee
  • School of Materials Science and Engineering, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
  • 1Department of Materials Science and Engineering, Graduate School of Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, Republic of Korea
  • 2Dongdo Basalt Industry Co. Ltd., 56 Taksil-gil, Angang, Gyeongju-si 38028, Republic of Korea
E-mail:
In this study, Fe-Ni slag, converter slag and dephosphorization slag generated from the steel industry, and fly ash or bottom ash from a power plant, were mixed at an appropriate mixing ratio and melted in a melting furnace in a massproduction process for glass ceramics. Then, glass ceramic products, having a basalt composition with SiO2, Al2O3, CaO, MgO, and Fe2O3 components, were fabricated through casting and heat treatment process. Comparison was made of the samples before and after the modification of the process conditions. Glass ceramic samples before and after the process modification were similar in chemical composition, but Al2O3 and Na2O contents were slightly higher in the samples before the modification. Before and after the process modification, it was confirmed that the sample had a melting temperature below 1250 °C, and that pyroxene and diopside are the primary phases of the product. The crystallization temperature in the sample after modification was found to be higher than that in the sample before modification. The activation energy for crystallization was evaluated and found to be 467 kJ/mol for the sample before the process modification, and 337 kJ/mol for the sample after the process modification. The degree of crystallinity was evaluated and found to be 82% before the process change and 87% after the process change. Mechanical properties such as compressive strength and bending strength were evaluated and found to be excellent for the sample after process modification. In conclusion, the samples after the process modification were evaluated and found to have superior characteristics compared to those before the modification.
Keywords:basalt;slag recycling;Kissinger method;crystallinity;mechanical strength
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