Liu Zhaoyang, Yu Jingkun, Yang Xin, Jin Endong, Yuan Lei
School of Metallurgy, Northeastern University, Shenyang 110819, China.
Materials (Basel). 2018 May 24;11(6):883. doi: 10.3390/ma11060883.
: Various carbon contents in the MgO-C refractory were studied with respect to the oxidation resistance and the wetting behavior with slag. The bulk density, apparent porosity, cold crushing strength, oxidation rate, and mass loss rate of the fired MgO-C refractories with various carbon contents were measured and compared. The wetting and penetration behavior of the cured MgO-C refractory with the molten slag were observed in-situ. The contact angle and the shape parameters of molten slag, including the apparent radius, height, and volume were compared. The results showed that the regenerated MgO effectively restrained the carbon oxidation in the MgO-C refractory, which was more evident at the low carbon content refractory. The contact angle between the MgO-C refractory and the molten slag increased as the carbon content increased. The increased contact angle decreased the penetration of the molten slag.
针对氧化镁-碳质耐火材料中不同的碳含量，研究了其抗氧化性以及与熔渣的润湿性。测量并比较了不同碳含量的烧成氧化镁-碳质耐火材料的体积密度、显气孔率、常温耐压强度、氧化速率和质量损失率。原位观察了固化氧化镁-碳质耐火材料与熔渣的润湿和渗透行为。比较了熔渣的接触角和形状参数，包括表观半径、高度和体积。结果表明，再生氧化镁有效地抑制了氧化镁-碳质耐火材料中的碳氧化，在低碳含量的耐火材料中这种抑制作用更为明显。随着碳含量的增加，氧化镁-碳质耐火材料与熔渣之间的接触角增大。增大的接触角降低了熔渣的渗透。
