摘要
碱侵蚀是高炉、回转窑、匣钵等高温装置重要部位损毁的主要原因,不同于熔渣导致的溶解侵蚀和物理冲刷导致的蚀损,碱侵蚀有着其特殊的作用机制。本文首先介绍了碱的物理性质并计算了其与耐火氧化物反应的吉布斯自由能和体积效应,以此为出发点综述了碱对典型高温装置关键部位的侵蚀过程及机制,并概述了碱性耐火材料、铝硅系耐火材料、非氧化物耐火材料、新型合成材料抗碱侵蚀的研究与应用新进展,同时对比了几种国内外抗碱侵蚀标准或方法,最后对耐火材料抗碱侵蚀性研究提出了几点建议。
Many high temperature furnaces have confronted with a more serious anti-alkali situation, such as blast furnace, cement rotary kiln and sagger for cathode material, while corrosion mechanism by alkali is different from other corrosion medium of dissolution and scouring. This paper briefly introduces the physical properties of alkali metal compounds, and describes the reactions between alkali oxides and aluminum siliceous refractories by thermodynamics calculating, as well as the volume effect by the model E. Additionally, this paper sums up the corrosion process and mechanism for some typical furnaces, especially the same characteristics, and focuses on the research progress of alkali resistant refractories, and alkali evaluation method. Finally, the shortcomings of the future research directions are summarized.
作者
钱凡
李红霞
郭海荣
于建宾
李坚强
马渭奎
马北越
杨文刚
QIAN Fan;LI Hongxia;GUO Hairong;YU Jianbin;LI Jianqiang;MA Weikui;MA Beiyue;YANG Wengang(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,Henan,China;State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China;Institute of Research of Iron and Steel,Shagang,Suzhou 215625,Jiangsu,China;School of Metallurgy,Northeastern University,Shenyang 110819,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第11期66-77,共12页
Materials Reports
基金
国家重点研发计划(2021YFB3701400)
国家自然科学基金(51932008)。
