Wear Mechanism of MgO-C Refractory with Thermite Reaction Products of MgO and Al

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J. Korean Ceram. Soc. > Volume 33(7); 1996 > Article

Journal of the Korean Ceramic Society 1996;33(7): 832.

MgO와 Al의 테르밋 반응생성물이 첨가된 MgO-C계 내화재료의 용손 기구

최태현, 전병세¹

경남대학교 무기재료공학과
¹전남대학교 무기재료공학과

Wear Mechanism of MgO-C Refractory with Thermite Reaction Products of MgO and Al

ABSTRACT

Thermite reaction products of MgO and Al were added to MgO-C refractory to improve the properties of corrosion against the attack of slag, oxidation and mechanical spalling. Corrosion rate of MgO-C-MgAl2O4 spinel refractory at the ratio of 3.3(CaO/SiO2) slag was smaller than that of MgO-C and MgO-C-Al refractory. The excellent corrosion resistance of the MgO-C-MgAl2O4 spinel refractory against the slag attack was appeared by Al and MgAl2O4 spinel with high melting point and corrosion resistance and the high thermal conductivity and low thermal expansion of AIN. Hot M.O.R at 140$0^{circ}C$ and the resistance of oxidation weight loss at 90$0^{circ}C$ were 210kg/cm2 and -12% respectively.

Key words: Thermite, MgO-C, Refractory, Corrosion, Spalling