一、历史回顾焦炭是高炉的燃料,其作用不仅限于供给热能和还原剂,很大程度上还影响着高炉的冶炼状态,因此评价高炉焦炭应与高炉冶炼技术的发展和要求连系起来。从使用焦炭炼铁到十九世纪末,人们经历了长期适应过程,直到二十世纪初无论炼铁或炼焦在技术上都已基本定型,完成了适应焦炭炼铁的一系列技术需要。例如炼铁方面的高炉炉型、大风量的风机、使用热风等等,炼焦方面机械化带副产回收焦炉的发展、煤经洗选降低灰硫、改善气孔率提高反应性等等。炼铁和炼焦这一技术上的配合,使得1850年到1900年间全世界生铁产量几乎每十年翻一番。随着炼铁生产迅速发展,渐渐感到好的炼焦煤不足,那种完全以低灰低硫单种煤炼焦方式已经不能立足,于是开始了多种煤配煤炼焦,这就带来焦炭强度问题,二十世纪 First, the historical review Coke is a blast furnace fuel, its role is not limited to the supply of heat and reducing agent, to a large extent also affect the state of blast furnace smelting, blast furnace coke should be evaluated with the blast furnace smelting technology and requirements linked. From using coke to ironmaking to the end of the nineteenth century, people underwent a long-term adaptation process. Until the early twentieth century, both ironmaking and coking technologies were basically technically shaped, completing a series of technological needs for cokemaking. For example, the blast furnace furnace in the iron and steel industry, the fan with large air volume, the use of hot air and so on, the development of mechanization by-product coke oven with coking, the reduction of ash sulfur by washing and dressing, the improvement of porosity and reactivity, etc. The technical cooperation between ironmaking and coking has enabled the world pig iron production to double almost every decade between 1850 and 1900. With the rapid development of ironmaking production, and gradually feel good coking coal shortage, the kind of completely low-ash, low-sulfur single-coking coal has been unable to gain a foothold, so began a variety of coal blending coking, which brings coke strength problems Twentieth Century