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.
关键词
高炉/操作炉型/高比例球团矿/全铸铁冷却壁/炉墙结厚
Key words
blast furnace/furnace operating profile/high percentage of pellets/all-cast iron cooling stave/wall accretion
维普
万方数据