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一九七四年世界钢产量为7.85亿吨,其中2/3是用铁,1/3是用废钢生产的,而铁中98.5％是用高炉生产的。钢铁工业的能量消耗约占世界总能量消耗的11％,尽管高炉在产量和燃料消耗上取得了重大改进,发挥了高炉的巨大优越性,由于焦炭不仅是还原剂,而且是炉内料柱的支撑骨架,必须用高强度冶金焦作燃材构成了高炉无法克服的缺点,这不仅严重阻碍着焦化资源不足地区钢铁工业的发展,而且冶金焦比其它燃料贵的多,为此各国冶金工作者在发展高炉的同时积极研究非高炉炼铁工艺,所用方法约近百
In 1974, the world’s steel production was 785 million tons, of which two-thirds were made of steel and one-third were made of scrap, while 98.5% of the iron was made from blast furnaces. The energy consumption of the steel industry accounts for about 11% of the world’s total energy consumption, and although the blast furnace has made significant improvements in output and fuel consumption, it exerts tremendous advantages in blast furnaces. Since coke is not only a reducing agent but also a furnace column The support skeleton must be made of high-strength metallurgical coke as a fuel can not overcome the shortcomings of the blast furnace, which not only seriously hindered the development of the iron and steel industry in coking less-resourced areas, but also more expensive than other fuels metallurgical coke, metallurgical workers in various countries Blast furnace at the same time actively study the non-blast furnace ironmaking process, the method used in about a hundred