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一、引言众所周知,焦炭的性质不仅直接影响高炉的透气性,而且影响炉内反应进程。近几年来考虑到严格控制环境污染和节约能源,许多钢铁厂采用了干熄焦装置(简称CDQ)以回收赤热焦炭的热能。使用CDQ工艺后焦炭将会有各种各样性质的变化,从而使高炉操作也会出现不同情况。1977年1月份,川崎钢铁公司的千叶厂1号CDQ装置投产,使6号高炉所用焦炭的55%为干熄焦。1981年4月,2号CDQ投产,为6号高炉提供了70%和5号高炉100%的干熄焦。这篇文章介绍了5号高炉全部使用干熄焦的调查情况。
I. Introduction As we all know, the nature of coke not only directly affect the permeability of the blast furnace, but also affect the furnace reaction process. In recent years, in consideration of strict control of environmental pollution and energy conservation, many steel mills have adopted a CDQ device to recover the heat of red-hot coke. There will be a wide range of changes in the properties of coke after the CDQ process, resulting in different conditions for blast furnace operation. In January 1977, Kawasaki Steel’s Chiba Plant No. 1 CDQ plant was put into operation, making 55% of the coke used on the No. 6 blast furnace for CDQ. In April 1981, CDQ No. 2 was put into operation, providing 70% of No.6 blast furnace and 100% of CDQ of No.5 blast furnace. This article describes the investigation of the use of CDQ for all of No.5 blast furnaces.