Control of Operating Profile of Tangshan Steel BF Smelting with High Percentage of Pellets
The blast furnace of Tangsteel New Area is designed based on the philosophy of"modernized and environment-friendly"with 50％of pellets to be used.To adapt to the furnace operating under high percentage of pellets,the design a-dopts optimized furnace operating profile and all-cast iron cooling stave.However,the furnace operating profile is found hard to control because of unstable furnace condition at the edge and easy formation of wall accretion while the furnace running un-der high percentage of pellets.To cope with this situation,the steel producer strengthens the quality control of raw materials and fuel,properly conditions the blasting system and burden distribution system,controls the water temperature difference to a reasonable level,and handle the wall accretion in due course.As a result,the furnace achieves long-run stable and smooth operation,and various technical indicators keep on improving.Since the second half of 2022,the productivity of fur-nace keeps at 2.74-2.97t/(m3·d).The all-cast iron cooling stave design is proved adaptive to the intensive smelting un-der high percentage of pellets.
blast furnacefurnace operating profilehigh percentage of pelletsall-cast iron cooling stavewall accretion
万方数据
维普
