富氧率提升下的钒钛矿高炉冶炼  

Production Practice of Improving Oxygen Enrichment Rate in Vanadium Titanium Ore Blast Furnace Smelting

作　　者：李红艳 胡心光 Li Hongyan;Hu Xinguang(Ironmaking Business Department,HBIS Group Chengde Vanadium Titanium New Material Co.,Ltd.,Chengde Hebei 067102,China)

机构地区：[1]河钢承德钒钛新材料有限公司炼铁事业部,河北承德067102

出　　处：《山西冶金》2024年第5期123-125,共3页Shanxi Metallurgy

摘　　要：对承德钒钛某2500 m3高炉提高富氧率的生产实践进行了总结,系统地分析了富氧率提高对钒钛矿高炉冶炼生产的影响。高炉提富氧后,在相同的w[Si+Ti]条件下,理论燃烧温度有所提高,降低w[Si+Ti]仍能保证铁水有充足的物理热;通过合理配煤,炉况更容易稳定,在铁水温度不变的前提下,更适合于低w[Si+Ti]冶炼。根据研究结果,从高炉工艺操作制度、理论燃烧温度控制、高富氧条件下生产组织优化以及提高富氧对炉缸活跃程度的影响等方面入手,研究了钒钛矿冶炼高炉长期保持高富氧率的工艺操作方法。通过对装料制度、送风制度以及喷煤工艺的优化调整以及加强炉前管理等一系列措施,实现了钒钛矿高炉冶炼在高富氧条件下的长周期稳定生产,钒回收率与以往相比显著提高。A summary was made on the practice of increasing oxygen enrichment rate in a 2500 m3 blast furnace of vanadium titanium in Chengde.A systematic analysis was conducted on the impact of increasing oxygen enrichment rate on the smelting production of vanadium titanium ore in blast furnaces.After oxygen enrichment in the blast furnace,under the same w[Si+Ti]conditions,the theoretical combustion temperature is increased,while reducing w[Si+Ti]can still ensure that the molten iron has sufficient physical heat.By rational coal blending,the furnace condition is easier to stabilize,and it is more suitable for low w[Si+Ti]smelting under the premise of constant iron temperature.Based on the research results,starting from the aspects of blast furnace process operation system,theoretical combustion temperature control,production organization optimization under high oxygen rich conditions,and the impact of increasing oxygen rich on the activity of the furnace hearth,the process operation methods for vanadium titanium ore smelting blast furnace to maintain high oxygen rich rate in the long term were studied.By optimizing and adjusting the loading system,air supply system,and coal injection process,as well as strengthening pre furnace management,a series of measures have been taken to achieve long-term stability in blast furnace production of vanadium titanium ore under high oxygen rich conditions,and the vanadium recovery rate has significantly improved compared to the past.

关 键 词：钒钛矿 高炉 喷煤 理论燃烧温度 富氧率 

分 类 号：TF631[冶金工程—钢铁冶金]