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在当代高炉熔炼工艺下,把鼓风温度提高到1400℃或更高,在经济上是有好处的。鼓风温度的进一步提高,要求拟定新结构的高风温热风炉。这方面的主要途径,看来是消除高燃烧室所固有的缺点和创建无竖风道型的顶燃式热风炉。 创建无竖风道型热风炉的工作很早就开始了,而且许多国家都在进行此项工作。对这种热风炉提出了许多结构,大体可分为2类:一类是把单个烧嘴和预燃室布置在拱顶之上,另一类是把烧嘴布置在拱顶的侧向和
In contemporary blast furnace smelting processes, it is economically advantageous to raise the blast temperature to 1400 ° C or higher. Blast temperature further improved, requiring the development of a new structure of the high temperature hot stove. The main approach in this regard appears to be to eliminate the inherent disadvantages of high combustors and to create a top-fired hot blast stove with no vertical duct. The work of creating a free-air duct stove started very early and is underway in many countries. A number of structures have been proposed for such stoves, which can be divided into two categories: one is to arrange single burners and pre-burners over the vaults, and the other is to arrange burners in the lateral direction of the vault