The wetting and corrosion behavior of slag with different alkalinity and MgO-C refractories were studied through high-temperature wetting experiments. The results showed that as the alkalinity of the slag increased, the final contact angle between the slag and the MgO-C refractory gradually decreased, and the penetration depth of the slag into the refractory gradually decreased. The CaO and SiO₂ in the slag penetrated into the MgO-C refractory along the pores or surface cracks formed by carbon oxidation, and reacted with MgO to generate a large amount of low-melting compound (CaO-MgO-SiO₂), which accelerated the corrosion of the refractory. As the alkalinity increased, the content of CaO in the slag increased, the viscosity of the slag increased and the fluidity became worse, so the mass transfer and diffusion of molecules or ions in the slag were weakened. In addition, the increase of CaO content reduced the activity of FeO in the slag, which inhibited the interfacial chemical reaction, thereby weakening the wetting effect caused by the reaction.

通过高温润湿实验研究了不同碱度炉渣和MgO-C耐火材料的润湿腐蚀行为。结果表明，随着炉渣碱度的增加，炉渣与MgO-C耐火材料的最终接触角逐渐减小，炉渣对耐火材料的渗透深度逐渐减小。炉渣中的CaO和SiO ₂沿碳氧化形成的孔隙或表面裂纹渗入MgO-C耐火材料中，与MgO反应生成大量低熔点化合物（CaO-MgO-SiO ₂)，加速了耐火材料的腐蚀。随着碱度的增加，渣中CaO的含量增加，渣的粘度增加，流动性变差，因此渣中分子或离子的传质和扩散减弱。此外，CaO含量的增加降低了渣中FeO的活性，抑制了界面化学反应，从而减弱了反应引起的润湿作用。