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前言 虽然早在150年前就已经发明了高炉喷煤技术,但直到60年代初才首次成功用于工业生产。在以后的年代里,高炉喷煤几乎停滞不前。只是在近十年来,高炉喷煤技术才最终得到了飞速发展,并且这一发展趋势还在不断继续。不仅喷煤高炉的数目有所增加(图1),而且喷煤量也提高了,焦比能降到297kg/tHM。 80年代初,人们突然对高炉喷煤重新产生兴趣,原因是石油产品短缺,价格上涨,导致能源危机。由此,必须恢复“全焦操作”,从而使高炉操作不再拥有过去从风口喷吹的显著特性。喷吹煤粉(PCI)的最初目的是在喷煤量达到60～100kg煤/tHM的大喷煤量时使高炉操作顺
Foreword Although blast furnace coal injection technology was invented as early as 150 years ago, it was first successfully used in industrial production in the early 1960s. In the later years, blast furnace PCI almost stagnated. Only in the past ten years, blast furnace coal injection technology finally got rapid development, and this trend is still continuing. Not only did the number of blast furnaces increased (Figure 1), but also the amount of coal sprayed increased as coke ratios were reduced to 297 kg / tHM. In the early 1980s, people suddenly rekindled their interest in injecting coal into the blast furnace because of the shortage of oil products and the price hikes that led to the energy crisis. As a result, “full-range operation” must be resumed so that blast furnace operations no longer have the salient features of past blow-throughs. The primary purpose of PCI is to operate the blast furnace at a high PCI rate of 60 to 100 kg coal / tHM