ANALYSIS OF TEMPERATURE AND STRESS FIELD INSIDE FERRONICKEL SUBMERGED ARC FURNACE
This article establishes a three-dimensional coupled electro-magnetic-thermal-stress coupling model of multi physics fields inside a submerged arc furnace.The current density and temperature field of the molten pool,as well as the temperature field and thermal stress distribution of the submerged arc furnace body,are calculated using numerical simulation methods.Two different lining materials,namely high alumina bricks and silicon carbide bricks,are selected at the same position.The temperature field and thermal stress distribution of the submerged arc furnace body are calcu-lated.The results indicate that the current density is concentrated on both sides of the arc and satisfies the skin effect and proximity effect principles of alternating current.At the bottom of the furnace,the highest temperature occurs di-rectly below the high-temperature crucible area in the molten pool,reaching 2 156 K.The maximum stress and defor-mation of the outer furnace shell are located at a height of Z=3.15 m.The insulation performance and service life of the furnace lining using high alumina bricks are better than those of silicon carbide bricks.
current densitytemperature fieldthermal stressnumerical simulation
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