Simulation of operation inner profile of blast furnace with smelting vanadium-titanium magnetite
Based on the design parameters and production conditions of a vanadium-titanium magnetite smelting blast furnace,a numerical model of the vanadium-titanium blast furnace operation inner model was established through a MATLAB calculation software in order to study the slag adhering situation of the furnace wall within high temperature zone of the blast furnace operation.The predicated results show that the heat load of the furnace wall within high temperature zone is mostly below than 12 kW/(m2 s)due to the weaker airflow control at the edge of the blast furnace.The temperature on cooling staves is close to that on shell.Besides,It is higher than 100 mm,and the slag skull thickness at the hot surface on staves is generally higher than 100 mm while unevenly distributed,even reaching up to more than 200 mm at specific directions.Compared with ordinary blast furnaces,vanadium-titanium magnetite smelting blast furnaces show stronger slag adhering capacity within high-temperature zones given the same thermal load.Considering safety and slag skull stability,the heat load of vanadium-ti-tanium blast furnace cooling staves should be controlled within 10.50～34.50 kW/(m2·s).
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