Application of optimization technology for vanadium titanate smelting index in 1 750 m3 blast furnace of Pangang Group
Up to now,the blast furnace ironmaking is still one of the most energy-efficient processes in ironmaking technology.The stable condition of blast furnace has a significant impact on the production and quality of molten iron.The development and comprehensive utilization of vanadium titanium magnetite resources are major national strategies.Pangang Group has overcome the technical challenge of smelting vanadium titanium magnetite with ordi-nary blast furnaces,and has built a comprehensive utilization and development base for vanadium titanium magnetite resources in Panzhihua West(Panxi region),which has achieved the large-scale utilization of Fe,V,and Ti elements in vanadium titanium magnetite.The characteristics of raw materials and fuels in Panxi region are shortage of coking coal resources and high content of harmful elements in ores.Due to various factors that affect the stability and smooth operation of blast furnaces,fluctuations in furnace conditions occur during the smelting process.How to en-sure stable and smooth operation of the blast furnace and low-carbon smelting are important prerequisite for effec-tively utilizing the vanadium and titanium resources in Panxi region.The smelting technology of vanadium titanium ore based on the resource characteristics of Panxi region and 1 750 m3 blast furnace type of Xichang Steel Vanadium were analyzed.Starting from air supply system,slag making system,thermal system,and charging system,through theoretical analysis,regression of actual production data,and benchmarking of blast furnaces with similar raw materials,fuels,or furnace type parameters,the reasonable operating system for maintaining long-term stabili-ty of vanadium titanium ore smelting in 1 750 m3 blast furnaces was elucidated,as well as the technical path and im-plementation effect of rapid recovery for special furnace conditions.The result can provide theoretical and practical guidance for efficient smelting of vanadium titanium magnetite resources in blast furnaces.
blast furnacevanadium titanium magnetitereasonable operation systemstable furnace conditiontechnological pathproductive practice
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