Refractory Iron Depth Reduction Furnace’s Experimental Research and Key Issues’Discussion
|Course||Thermal Power Engineering|
|Keywords||Depth reduction Regenerative Combustion furnace pressure resistanceloss ignition burner|
Lin-Jiang refractory iron depth reduction-efficient separation project is a863project declared by Metallurgical Technology Institute, Northeastern University. Depth reduction furnace’s R&D and experimental is the important sub-topic in this863project and determines whether the reduction process could achieve.According to the process characteristics of refractory iron ore depth reduction, proposes a new reduction process and device, Which uses regenerative combustion technology as the foundation, double-sided heating, reducing gas returning, This paper completes the experimental of reduction furnace and the discussion of key issues, the main contents include:(1)Propos overall structure design idea and situation in all aspects, Using regenerative combustion to achieve structural design of double layer burning heating.(2)Conducting a thermal test of the furnace, through the heat balance calculations, Analysis of the furnace’s energy use and problems.(3)Under the six different switching time, Conducting the experiments of regenerator heat transfer. Calculated the efficiency of the smoke temperature and heat recovery efficiency under each switching time. Analysis and determine the best switching time.(4)Establishing a furnace One-dimensional gas flow mathematical model and analyzed the cause of furnace pressure problem. Proposing the improvements.(5)Analysis the regenerator and pipe pressure loss of the furnace. Find the largest part of the resistance and made improvements.(6)Conducting the experimental of ignition burner’s combustion, Determined the best pressure ratio when ignition burner burning. By comparing the defects in several ignition burner on the structure and principles, put forward a new ignition burner program.The paper advansed experimental study and theoretical analysis in-depth, The research result provides important theoretical basis for the industrial experiment of refractory ore depth reduction furnace.