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1.背景近年来,随着高炉的大型化,高温高压操作、富氧、从风口喷入辅助燃料等技术也飞速发展。在这些高难度操作技术中,突然发生的风口破损是妨碍稳定操作的重大原因。因此,防止风口破损已成为提高产量的重要课题。 2.研制经过风口破损大致可分为熔损和磨损两类,但临时性休风的原因大部分是由熔损所致。因此,根据风口的冷却方式以及熔损风口的解剖检查,进行了导热分析;并在研究风口结构的同时,还进行了风口表面喷涂材料的研究,最后研究出具有耐熔损和节能两大优点的偏心型高流速水冷风口。
1. Background In recent years, with the large-scale blast furnace, high temperature and high pressure operation, oxygen enrichment, from the outlet into the auxiliary fuel and other technologies are also rapidly developing. In these difficult operating techniques, sudden damage to the tuyere is a major cause of interference with stable operation. Therefore, to prevent the tuyere damage has become an important issue to increase production. 2. Development After the tuyere can be roughly divided into two types of damage and wear and tear, but most of the reasons for the temporary break caused by melting loss. Therefore, based on the cooling way of the tuyere and the anatomical inspection of the melt loss tuyere, the thermal analysis was carried out. At the same time the tuyere structure was studied, and the material of the tuyere surface was also studied. Finally, the two major advantages of erosion resistance and energy saving Eccentric high-speed water-cooled air outlet.