Causes and Control of Wall Accretion in Shougang No.2 BF
Wall accretion occurs in No.2 BF of Shougang Co.,Ltd.,and the furnace condition fluctuates for a long time due to deterioration of raw material and fuel quality,poor adaptability to the raw material quality fluctuation,and delayed opera-tion adjustment,etc.After lowering down the coke load,adjusting the charging system,reducing the slag alkalinity,char-ging fluorite for slugging,and changing the tuyere,the furnace goes back to the normal condition.It is believed that:(1)any unqualified incoming coke quality,if found,should be reported in time to the corresponding department to prevent BF operation problem;(2)if the quality of raw material and fuel is found unstable,measures shall be taken to ensure smooth gas flow path,especially the central gas flow path,so as to enhance the furnace adaptability to the said quality fluctu-ation;(3)in case of fluctuation of raw material and fuel conditions as well as their quality,corresponding adjustments should be carried out in time to ensure smooth running the furnace.
blast furnacewall accretionquality of raw material and fuelfurnace condition fluctuation,furnace slugging
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