Reactive wetting phenomena of MgO-C refractories in contact with CaO-SiO2 slag
Reactive wetting phenomena of MgO-C refractories in contact with CaO-SiO2 slag
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DOI：
10.1016/s1003-6326(12)61818-4
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发表时间：
2012-12-01
影响因子：
4.5
通讯作者：
Chung, Yongsug
中科院分区：
文献类型：
--
作者：
Heo, Seon-Hwa;Lee, Kyuyong;Chung, Yongsug
通过改变碳含量，研究了MgO-C渣和CaO-SiO2渣之间的润湿现象。采用座滴技术研究润湿现象，结合高速摄像机观察固有润湿现象。结果表明，渣中SiO2含量高和Al 2 O3的存在促进了Mg 2+的扩散，从而促进了反应润湿。MgO-C耐火材料中的碳通过排斥熔渣和减缓Mg ~（2+）的扩散而阻碍熔渣的渗透。这是炉渣在含碳量为17%（质量分数）的MgO-C耐火材料上表现出与石墨相似的不润湿性的原因。
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.