济钢1~#1750m^3高炉长期休复风操作实践

Practice of Long Time Blowing Down and Reblowingof Jinan Steel's No.1 1750m^3 BF

济钢1~#1 750 m^3高炉在2016年10月进行了为期3 d的休风操作。在休风前的准备、休风操作、复风后炉况恢复等方面积累了一定经验。休风前提高焦比、降低配料碱度等准备工作,确保炉况顺行,炉缸状态良好。复风后,通过合理控制风量、喷煤及出铁等关键环节,实现送风后炉况的快速恢复。

In October 2016, operation of long-time blowing-down and reblowing for 3 days has been carried out atfirst 1 750 m^3 blast furnace inJisteel.Much experience such as the preparation of blowing-down, operation of blowing-down, operation ofrecovery blast furnace conditions of reblowing etc. has been summed up. The preparations of blowing-downsuch as raising coke ratio, reducing acid-to-base ratio of batch and so on have been ensured regular furnace conditions and hearth working condition well. After starting-up, fast recovery blast furnace condi- tions of reblowing has been realized by control critical joints such as blast volume, pulverized coal injection, tapping iron and so on.