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1962年,各资本主义国家由于增加了炉料中的球团矿比例,和向高炉炉缸吹气体、液体、固体燃料以及富氧鼓风、提高风温等措施后,高炉冶炼指标继续有了改进。 (一)使用球团矿方面。目前美国和加拿大在高炉炉料中广泛地使用球团矿。西德、瑞典、芬兰和其他国家也采用球团矿。如美国伯利恒钢铁公司拉卡瓦纳工厂所用炉料,是由40％烧结矿、10％块矿和50％未选矿石组成的,后在四座炉子上以含62.5～64.5％Fe的球团矿代替了40％的未选矿;这样使生产能力提高了15％,焦炭消耗显降低了18％,出渣量由525公斤/吨生铁降低到400公斤/吨生
In 1962, the blast furnace smelting indicators continued to improve as a result of measures such as increasing the proportion of pellets in the charge and blowing gas, liquid, solid fuels and oxygen-enriched blast to the blast furnace in various capitalist countries in 1962 and raising the air temperature . (A) the use of pellets. Currently, the United States and Canada use pellets extensively in blast furnace charge. Pellets are also used in West Germany, Sweden, Finland and other countries. Such as the United States Bethlehem Iron and Steel Company La Kavanai plant used charge, is composed of 40% sinter, 10% lump ore and 50% of the ore is not selected composition, and then in the four furnace with 62.5 to 64.5% Fe pellets instead of 40% of the non-beneficiation; so that production capacity increased by 15%, coke consumption decreased significantly by 18%, the amount of slag from 525 kg / tonne pig iron reduced to 400 kg / tonne