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精料是高炉炼铁的基础。从五十年代以来,通过生产实践加深了对原料物理化学性质重要性的认识,从而大大地促进了高炉生产率的上升和焦比的降低,高炉产量成倍地提高,焦比下降了二分之一,甚至还要多。高效生产对高炉最重要的原料的焦炭提出了更高的要求。辅助燃料喷吹的发展,使得焦炭做为高炉内还原气体的来源有了某种程度的降低,同时由于矿石原料的改善和辅助燃料的喷吹,相应地增大了矿焦比,这就要求更进一步改善焦炭的物理化学性质,保持高炉
Concentrate is the basis of blast furnace ironmaking. Since the 1950s, awareness of the importance of the physico-chemical properties of raw materials has been deepened through the practice of production, which has greatly contributed to the increase of blast furnace productivity and the reduction of coke ratio. The blast furnace output has been doubled and the coke ratio has dropped by half One, even more. Efficient production of the most important raw materials for the blast furnace coke put forward higher requirements. The development of the auxiliary fuel injection makes the coke as a source of reduction gas in the blast furnace to a certain extent, and at the same time, the ore-coke ratio is correspondingly increased due to the improvement of ore raw materials and the injection of auxiliary fuel, which requires Further improve the physical and chemical properties of coke to maintain the blast furnace