作者：XU Guotao1ZHAO Yuan2WU Jie1ZHANG Honglei1LIU Li1ZHANG Yanwen3ZHOU Wangzhi1

作者单位：1. Baosteel Central Research Institute2. Manufacturing Department of Wuhan Iron and Steel Company Limited3. Technical Center of Wuhan Iron and Steel Company Limited

刊名：China’s Refractories

ISSN：1004-4493

出版年：2023-03-15

卷：32

期：1

起页：1-5

止页：

分类号：TF701;TQ175.7

语种：中文

关键词：

内容简介

The abnormal corrosion of hot iron ladles was investigated.The performance,the composition and the structure of bricks for hot iron ladles were analyzed.The results show that(1) compared with the alumina-silicon carbide-carbon bricks for the ladle bottom,those for the ladle wall have more pyrophyllite and the Al2O3 content of 36.32 mass%;their bulk density,apparent porosity and cold compressive strength are lower than the requirement of industry standard;they have poor anti-oxidation performance and are oxidized to form a porous layer during service,which loosens the brick lining structure thus leading to fracture,local wear and structural damage of bricks;(2) without preheating,steel scraps are not completely melted,resulting in slag or steel attachment at the mouth or the bottom of ladles thus increasing damage of ladles;(3) and the residual bricks react with the attached slag to form low melting point phases affecting their hot properties.The refractories for the lining of hot iron ladles must be improved in combination with process changes,not entirely by raw materials replacement to reduce costs.