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J. Korean Ceram. Soc. > Volume 36(8); 1999 > Article
Journal of the Korean Ceramic Society 1999;36(8): 876.
턴디쉬용 마그네시아질 댐블록의 제조와 그특성
정두화, 김상모, 이석근
포항산업과학연구원 재료공정연구센터
characteristics of Magnesia Dam Block for Tundish Vessel in Steel Making Process
In order to develop high performance basic dam block for tundish vessel in steel-making binders and additives on hydration and thermal characteristics of magnesiz castable refractories were studied. Crack initiation and propagation in cement bonded magnesia castables due to slaking of magnesia clinker at drying process were suppressed by using spinel clinker instead of magnesia powder. In case of Na2O$.$2CaO$.$P2O5(NC2P) bonded castable crack initiation due to slaking of magnesia clinker did not occur but bending strength at high temperature was low. Mechanical properties of NC2P bonded castable refractories at high temperature were improved by using magnesia clinker that contains low SiO2 contents.
Key words: Steel-making, Tundish, Basic refractories, Castables, Dam block, Magnesia, Slaking
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