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在冲天爐的整个熔化过程中,燃料发生的热量,真正被用来熔化铁料的只占50％左右,其余的50％被爐气带走,以及被爐壁吸收。其中被爐气带走的热量占40％左右。因此,如何利用爐气中的热量是有重大意义的。最有效的措施是利用爐气中的热量来預热送入爐内去的新鮮空气,以提高铁水温度和节省焦炭用量。这种方法,不論在国内或国外,最近都推广得很快。我厂在改裝为水冷冲天爐的基础上,又安置了預热送风的装置,經过半年来的生产使用,效果良好,現介紹如下: 一、預热送风装置的构造冲天爐熔化率每小时为2.5吨,采用机械化的单轨吊車和开底式的料罐自动装料。加料口尺寸为:高2.5米,寬0.8米。爐子有效高为3.88米。由于
During the entire melting process of the cupola, the amount of heat generated by the fuel is actually about 50% used to melt the iron material, and the remaining 50% is taken away by the furnace gas and absorbed by the furnace wall. Which is taken away by the furnace gas accounted for about 40% of the heat. Therefore, how to use the heat in the furnace gas is of great significance. The most effective measure is to use the heat in the furnace gas to preheat the fresh air sent into the furnace to increase the temperature of the molten iron and save the coke amount. This method has recently been promoted very rapidly both at home and abroad. I plant converted to water-cooled cupola on the basis of the installation of preheated air supply device, after six months of production and use, the effect is good, are as follows: First, the structure of the preheating air blowing cupola melting rate 2.5 tons an hour, using mechanized monorail cranes and open-end tank automatic loading. Feeding mouth size: 2.5 meters high, 0.8 meters wide. The effective height of the stove is 3.88 meters. due to