Anisotropy of expansion coefficient and slag resistance of spinel carbon bricks

Yang Ding'ao; Yuan Shouqian; Jiang Mingxue; Dong Sunzhen; Zhao Zijian

doi:10.1007/BF02840862

Journal of Wuhan University of Technology Materials Science Edition ›› 2006, Vol. 21 ›› Issue (2) : 142 -145. DOI: 10.1007/BF02840862

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Anisotropy of expansion coefficient and slag resistance of spinel carbon bricks

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Abstract

Effects of the pressure direction on the thermal expansion and slag corrosion resistance were investigated and anisotropic microstructures of flaky graphite in spinel carbon bricks were examined. The experimental results show that slag corrosion velocities in the direction parallel to the pressure direction display a decrease of 34% compared to those in the vertical direction. Meantime, the linear expansion coefficient in the direction parallel to the pressure direction is 2.45 times as large as that in the vertical pressure direction. Slag corrosion velocities of spinel carbon bricks soaked in the AOD melting slag display a 46%–47% decrease compared to those of magnesia carbon bricks. The microstructure observation shows that spinel carbon bricks have a high degree of preferred orientation.

Keywords

anisotropy / spinel carbon / slog resistance / expansion coefficient

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Yang Ding'ao, Yuan Shouqian, Jiang Mingxue, Dong Sunzhen, Zhao Zijian. Anisotropy of expansion coefficient and slag resistance of spinel carbon bricks. Journal of Wuhan University of Technology Materials Science Edition, 2006, 21(2): 142-145 DOI:10.1007/BF02840862

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