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管式热风炉自推行多咀燃烧的先进经验以后,风温有了普遍提高,这对降低焦比保证生铁质量起了显著作用。但当前一般铁厂热风炉不耐烧,有的备用热风炉还没检修好,使用的热风炉已经跑风很厉害,因此就忙于更换,换后烧不久又漏风,造成长时间产量质量不稳定,炉况不顺行,事故多,生产情况不正常的局面。长沙暮云市铁厂有两座8m~3小高炉,同是42m~3的罗茨式鼓风机,使用70%白煤,30%熊炭炼铁。一座热风炉不跑风,日产生铁5.15t,焦比1.61,矿比2.52;
Since the introduction of the advanced experience of multi-burner combustion in the tubular hot stove, the temperature of the air has generally increased, which has played a significant role in reducing the coke ratio and ensuring the quality of pig iron. However, the current iron stove blast furnace is not resistant to burn, and some spare hot stove has not been properly repaired, the use of hot stove has a very powerful winds, so busy with the replacement, after a short burning again air leakage, resulting in a long time the quality of output instability , The furnace is not running smoothly, the accident, the production situation is not normal situation. Changsha Muyun Iron and Steel Mill has two 8m ~ 3 small blast furnace, with 42m ~ 3 Roots blower, the use of 70% white coal, 30% charcoal iron. A hot stove does not wind, daily production of iron 5.15t, coke ratio of 1.61, ore ratio of 2.52;