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日本《钢铁界报》七月一日刊载题为《世界最高水准的高炉燃料比》的文章,摘要如下: 高炉燃料比是表明高炉经济性的重要指标。在过去二十年中,日本燃料比从九百一十五公斤降至四百九十五公斤。降低燃料比的技术有: 一、高炉入炉料的改善 炉料的尺寸应能使炉内反应快而且透气性良好。目前块矿经破碎、筛分后,粒度下限为八至十毫米,上限为二十五至三十毫米。对烧结矿和焦炭也筛除粉末,并规定粒度上限。
Japan’s “Iron and Steel Tribune,” July 1 published an article entitled “the world’s highest level of blast furnace fuel ratio,” the article is summarized as follows: Blast furnace fuel ratio is an important indicator of blast furnace economy. In the past two decades, Japan’s fuel ratio has dropped from 915 kilograms to 495 kilograms. Techniques to reduce the fuel ratio are: First, the blast furnace into the charge to improve the size of the charge should be able to make the furnace reaction fast and good air permeability. At present, lump ore is crushed and sieved, the grain size lower limit is eight to ten millimeters and the upper limit is twenty-five to thirty millimeters. Sinter and coke also screen the powder, and provides the upper limit of particle size.