不同碳含量镁碳砖与熔渣间的润湿和侵蚀行为研究  

Study on wetting and erosion behavior between magnesia carbon brick with different carbon content and slag

作　　者：于河[1] 高源 刘吉辉[2] 张媛媛[2] 杨鑫 何志军[2] Yu He;Gao Yuan;Liu Jihui;Zhang Yuanyuan;Yang Xin;He Zhijun(Liaoning University of International Business;University of Science and Technology Liaoning)

机构地区：[1]辽宁对外经贸学院 [2]辽宁科技大学材料与冶金学院

出　　处：《冶金能源》2023年第1期9-13,共5页Energy For Metallurgical Industry

基　　金：国家自然科学基金资助项目(51874171、51974154)。

摘　　要：文章通过高温润湿实验研究了不同碳含量的镁碳砖与四元熔渣的润湿和侵蚀行为。由高温润湿实验可知,随着镁碳砖中碳含量的降低,熔渣与MgO-C耐火材料间的接触角逐渐减小,在相同温度下熔渣与含碳量高的镁碳砖的接触角更大,在润湿反应结束后,只有碳含量为16%的镁碳砖与熔渣的接触角仍大于90°;随着镁碳砖中碳含量的增加,炉渣向耐火材料内部的渗透深度也逐渐减小,由94.90μm(12%C)降低至31.65μm(16%C)。镁碳砖中的碳含量的降低,可为熔渣的扩散、溶解和渗透等界面反应提供动力学条件,最终致使熔渣对镁碳砖的侵蚀更为严重。The wetting and erosion behavior of magnesium-carbon bricks and quaternary slag with different carbon content were studied by high temperature wettability experiment. It can be seen from the high temperature wetting experiment that the contact angle between slag and MgO-C refractory decreases gradually with the decrease of carbon content in magnesia-carbon brick, and the contact angle between slag and magnesia-carbon brick with high carbon content is larger at the same temperature. After the wetting reaction, only the contact angle of the magnesia-carbon brick with a carbon content of 16% is still greater than 90°;With the increase of carbon content in magnesia-carbon brick, the penetration depth of slag into refractory decreased from 94.90 μm(12% C) to 31.65 μm(16% C). The reduction of carbon content in magnesia-carbon bricks can provide kinetic conditions for the interface reactions such as diffusion, dissolution and penetration of slag, which ultimately leads to more serious erosion of magnesium-carbon bricks by slag.

关 键 词：减碳绿色发展 MGO-C耐火材料 碳含量 润湿 侵蚀 

分 类 号：TQ175.1[化学工程—硅酸盐工业]