The construction and operation principle of a long melting life water-cooledcupola was described.
介绍长龄水冷冲天炉的结构及工作原理，分析风眼漏水和炉体挂渣的原因。
2
The fundamental key points of the debugging and using with the water-cooledcupola have been illustrated too.
并且说明了水冷冲天炉调试和使用的基本要点。
3
Main design problems of the cupola tuyere cooled by consecutive water have been discussed with detailed explanation of points in manufacturing through a actual example.