Reactive wetting phenomena of MgO-C refractories in contact with CaO-SiO2 slag |
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Authors: | Seon-Hwa HEO Kyuyong LEE Yongsug CHUNG |
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Affiliation: | Department of Advanced Materials Engineering,Korea Polytechnic University,Siheung-City,Gyeonggi-Do 429-793,Korea;2.Department of Consilience,Korea Polytechnic University,Siheung-City,Gyeonggi-Do 429-793,Korea; |
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Abstract: | Wetting phenomena between MgO C and CaO SiO2 slags were investigated by varying carbon content.A sessile drop technique was adopted to study the wetting phenomena in conjunction with a high speed camera for the observation of intrinsic wetting phenomena.The results show that the high content of SiO2 and the presence of Al2O3 in slags enhance the diffusion of Mg2+,leading to the promotion of reactive wetting.The carbon in MgO C refractory impedes the penetration of slags by repelling the slag and slowing the diffusion of Mg2+.This accounts for the non-wetting behavior of the slag on MgO C refractory with 17% (mass fraction) carbon similar to that of graphite. |
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