Numerical Study on Reduction Smelting Process Based on Multi-Physical Field Coupling of Submerged Arc Furnace
A transient 3D mathematical model was established to analyze the distribution of multiple physical fields in submerged arc furnace smelting process.The model used the user custom function(UDF)to realize electric thermal conversion,electromagnetic induction and reduction reaction,and the electric field,magnetic field,temperature field and mass fraction field in the furnace were simulated.The results showed that with the increase of electrode insertion depth,the maximum temperature of the pool gradually increased;Joule heat increased with time,and there were obvious skin effect and proximity effect on the inner edge of arc;nickel oxide reacted strongly below the arc and gradually decreased on the sides,and the reaction above the arc slowed down,and 2.1 m was the best electrode insertion depth.
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