Studies on Wear Mechanism of High Alumina Brick for Arc-furnace Roof

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J. Korean Ceram. Soc. > Volume 23(2); 1986 > Article

Journal of the Korean Ceramic Society 1986;23(2): 55.

아-크로 천정용 고알루미나질 벽돌의 용손기구에 관한 연구

허삼덕, 오기동

부산대학교 무기재료공학과

Studies on Wear Mechanism of High Alumina Brick for Arc-furnace Roof

ABSTRACT

In variuos physcial and chemical cause of damage of refractories for steel makin the clarification of the wear mechanism of brick is situated on important factor. In the present paper the wear mechanism of high alumina brick for the arc-furnace roof were inves-tigated by means of XRD, EPMA. SEM and microscopy. The results obtained were summerized as follows : (1) The altered layers which exist in high alumina brick used for arc-furnace roof were verified by mineral chemical analysis and EPMA. (2) The diffusion of materials combined with slag dust and iron oxide from furnace atmosphere in high basic process from hot face to interior was verified. (3)Activation energy for the synthesized slag permeated into the unused brick texture was 47-51 kcal per mole.