摘要
在热力学分析的基础上,分析了钾、钠、氯元素在热风炉耐火材料中的分布,研究了引起耐火材料软化收缩的原因,并提出了预防耐火材料软化破损的措施。研究结果表明,渗入到耐火材料中的钾、钠与Al2O3、SiO2等物质反应生成低熔点化合物,HCl和Al2O3反应生成气态氯化物,这是引起热风炉耐火材料软化收缩的主要原因。耐火材料表面处理、烧结矿使用低氯添加剂、及时更换破损布袋是防止热风炉耐火材料软化的主要措施。
Based on thermodynamic analysis, the distribution of K, Na and Cl in hot blast stove refractory material were analyzed. Causes of softening contraction of refractory material were studied and measures to avoid softening breakage were put forward. The results show that after seeping into the refractory materials, K and Na react with Al2O3 and SiO2 generating low melting point compound and HCl reacts with Al2O3 to generate gaseous chloride, which is the main cause of refractory materials softening contraction. Refractory materials surface treatment, using low chloride additives in sinter and changing broken bag in time are the main measures to prevent refractory materials from softening.
出处
《钢铁》
CAS
CSCD
北大核心
2015年第4期23-26,共4页
Iron and Steel
基金
国家自然科学基金资助项目(51174074)
河北省自然科学基金资助项目(E2011209022)
关键词
热风炉
耐火材料
软化
氯元素
hot blast stove
refractory material
softening
chlorine
