A Vacuum Aluminum Oxide Reduction Furnace Temperature Field Simulation And Experimental Research

Aluminum is a kind of light metals, with silver metal luster and is known as universal metal in industry. At present, the world of aluminium production and consumption are second only to steel. Aluminum is widely used in mechanical electrical, oil chemical industry, culture, public health, metallurgy, electric power, telecom, agriculture construction, transportation, aerospace, defense military and other important industry. In this paper, the metal aluminium metallurgical industry in the development course and the present situation, aluminum metallurgy of new technology of the current research status were summarized and the large general software ANSYS were briefly reviewed in this paper, at the same time, a brief analysis of the aluminum oxide vacuum carbon reduction in the process of hot chloride some problems need to be solved and the feasibility of the method to solve.Reduction furnace of transient temperature simulation research shows that:in the ac voltage for220V, reduction furnace current for200A or so, the pressure for70～90pa under the conditions of the heating60min, then in pressure for60～80pa, the voltage is120V, current for100A about the condition of the reduction furnace below the sublimation device connected aluminium heat60min, during the course of alumina in response, this time under different pressure simulate reduction furnace transient temperature reduction furnace from the bottom to electrode reduction furnace condensing area decrease distribution rule:about6cm for A zone, each interval about101℃to decline one by one; The highest temperature range is from1545.0to1688.0, the lowest temperature range for:384.0～527.8; Carbon reduction of the heat on alumina within the crucible highest temperature interval1487.5±6.5℃, the aluminum oxide chloride process temperature range of646.25condensation area℃±7.25℃Through to simulate the reduction furnace of the main node transient temperature of thermodynamic analysis and numerical calculation shows that, within the crucible reduction furnace, aluminum carbon reduction reaction heat vacuum, chlorination and effect of the QiHua decomposition reaction correlation response equation in the thermodynamics theory is there.Trough the concrete experimental results show that aluminum oxide vacuum carbon reduction furnace temperature and thermal simulation of the actual measured the maximum error for2.51%numerical; The minimum error is1.95%; The average error of2.14%. Through to the size of the reduction furnace were magnified2times change the thermostat input power of transient temperature field simulation, add a heat source and magnification of2times the size will change the thermostat input power of transient temperature field simulation, will restore type furnace of the current cylindrical to rectangular (i.e. rectangular change) and magnification of2times the size will change the thermostat input power of transient temperature field simulation research, provide some reduction furnace optimization design thoughts and the important practical thermodynamic data, at the same time in the thermodynamics theory proved the feasibility of the optimum of design.