Saevarsdottir: IEEE MTT-S, Reykjavik, 2018. Magnetic potential vector (V s/m) \(\vec\) An optimum electrode insertion depth exists according to the simulation results. Cr 2O 3 mainly reacts under the arc bottom, while iron oxides are reduced less in the same location. means any furnace wherein electrical energy is converted to heat energy by transmission of current between electrodes. When the electrode insertion depth is 1.99 and 1.79 m, the maximum magnetic field intensity around the electrode bottom is of 0.068 and 0.063 T. In theory, the molten pool should be an effective range for electrothermal conversion, so the size of the. The submerged arc furnace is basically heated by electricity. With the increase of electrode insertion depth, the average voltage drop of three arc zones is 11.43, 11.12, 10.83, and 10.35 V, respectively. The submerged arc furnace is a melting furnace, and the main size of the furnace body is the size of the molten pool, that is, its length and width (or diameter) and depth. The temperature distribution is similar with current density. Submerged arc furnace is divided into three layer arrangement The 1st layer is furnace body (including furnace bottom support, furnace shell, furnace lining), tapping system (including the ladle or pot and ladle car), arc burner, etc. The high-temperature area of furnace charge is near the arc zone. The result shows that the temperature of arc zone is maximum, which is 5897.17 K. The predicted temperature distribution of high temperature is in agreement with the measurement and simulation results.
Aiming to search the optimum design for more efficient industrial operation, the electrode insertion depth is investigated. The furnace internal structure consists of arc and furnace charge, for which the physical properties include temperature dependence.
The multi-physics model integrates electromagnetic, fluid flow, reduction reaction, and thermodynamics phenomenon in unison computational framework. A three-dimensional transient multi-physical field model with comprehensive reduction reaction consideration has been developed to capture the complex processes of a three-phase submerged arc furnace.
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