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一、问题的提出自二次世界大战后,由于炼铁技术的发展,世界生铁产量逐年大幅度增加,焦煤益感不足,降低焦比已成为炼铁的关键问题之一。而降低焦比与提高风温、加大燃料(粉煤、重油)喷吹量、精料、富氧和强化高炉操作等措施是紧密相联,其中提高风温与降低焦比关系更为突出,因此提高热风温度,不但是过去研
First, the question raised Since the Second World War, due to the development of ironmaking technology, the world pig iron production increased significantly year by year, coking coal lack of interest, reduce the coke ratio has become one of the key issues of ironmaking. Reducing the coke ratio and increasing the air temperature, increasing the fuel (pulverized coal, heavy oil) injection volume, concentrate, oxygen enrichment and enhanced blast furnace operation and other measures are closely linked, of which the relationship between increased air temperature and reduce the coke more prominent , So to increase hot air temperature, not only in the past research