Analysis on Electro/Magnetic/Thermal Multiphysics Coupled Thermal Stress Field of Mine Heat Furnace
In order to explore the distribution of thermal stress of the furnace body during stable operation,a large-scale ore furnace electrical/magnetic/thermal multiphysics coupled multiphase flow heat transfer mass transfer and thermal stress calculation model was established,and Fluent software user-defined functions(UDFs)were used to realize the electrothermal conversion phenomenon(arc heat and resistance heat),ore melting heat transfer,electrical/magnetic/thermal multiphysics coupling simulation analysis in the furnace,and the heat and mass transfer mechanism of ore/slag/alloy liquid/furnace lining in AC ore furnace under multi-physical field coupling conditions was explored,combined with the thermal-structure coupling method,the simulation calculation of the thermal stress of the furnace lining under the working condition of the large-scale mine hot furnace was carried out,and the deformation position and deformation amount of the furnace lining were accurately predicted.The results showed that with the increase of electrode insertion depth,the pressure in the furnace and the shape variable of the furnace body decreased.
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