Internal Temperature Field Simulation And Experimental Study On Carbon-Bearing Pellets Of Vanadium Titano-Magnetite

Our country has plenty of vanadium titano-magnetite resources in panxi region, in order to make full use of the resources of vanadium titano-magnetite.From previous blast furnace smelting to present non-blast furnace smelting, constantly develop new technology to improve resource utilization, vanadium titano-magnetite by rotary hearth furnace coal-based direct reduction technology represented. By the pellets of carbon-bearing vanadium titano-magnetite reduction procedure can improve the comprehensive and efficient utilization of iron,vanadium, titanium etc.resources. But the heat transfer in the process of the pellets of carbon-bearing vanadium titano-magnetite in the reduction becoming a restrictive link in smelting, therefore, this thesis aimed at the the theory and experiment research of temperature field of the pellets of carbon-bearing vanadium titano-magnetite in the reduction process.Through a single the pellets of carbon-bearing vanadium titano-magnetite in internal heat transfer mechanism and combined with the ANSYS finite element analysis method, with ANSYS simulation internal heat transfer process of pellets to explore the changing situation of temperature field of the pellets with the change of time. Combined with the pellets of carbon-bearing vanadium titano-magnetite heat transfer test conditions, the thermal physical parameters(thermal conductivity, specific heat, density) of the pellets were measured under different temperature and combined with the actual situation calculated the heat generation rate of the pellets in the reduction process with chemical reaction.Determination of pellets(single pellet, multilayer pellets) in preparation of different process parameters(mine coal ratio, molding pressure) and pellet reduction parameters(temperature) of the internal temperature distribution, and the determination of carbon-bearing vanadium titano-magnetite test sample at different temperature with carbon in specific heat at constant pressure data.Through the simulation analysis, it is concluded that the pellets in the Isothermal boundary condition(1300?), non-isothermal(heating rate 20/min) boundary conditions:temperature field distribution of different time cloud;And it is concluded that the pellets and1/2 r center node and boundary node temperature change curve over time.More intuitive understanding in internal heat transfer change trend of pellets and its influence to the pellet reduction.And through the corresponding pellets heat transfer experiments verify the feasible of the simulation results.In a word, through the ANSYS simulation of temperature field, heat transfer analysis for pellets provide plenty of theoretical guidance, promote the ANSYS finite element analysis technique in pellets temperature field analysis and application in engineering.