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Refractory Iron Depth Reduction Experimental Furnace’s R&D and Key Issues’ Discussion

Author: JinZuo
Tutor: ZhangWeiJun
School: Northeastern University
Course: Thermal Power Engineering
Keywords: depth reduction-efficient separation process reduction regenerative burner temperature uniformity numerical simulation
CLC: TF06
Type: Master's thesis
Year: 2010
Downloads: 25
Quote: 0
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Abstract


LinJiang refractory iron depth reduction-efficient separation project is a863project declared by Metallurgical Technology Institute, Northeastern University. Depth reduction furnace’s R&D is an 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 reburning. This paper completes the design of reduction furnace and the discussion of key issues, the main contents include:(1) Propose overall structure design idea, using regenerative combustion to achieve structural design of double layer burning heating.(2) Obtain the furnace’s best thermal design parameters by simulating thermal structure parameters and key operating parameters.(3) In order to study temperature uniformity problem along the width direction by using regenerative combustion, establish the flame length thermal model by using semi-mechanism model method, discuss different combustion models on the impact of temperature uniformity.(4) Simulate how to select fuel combustion excess air ratio to meet the heating requirements, and obtain the curve about furnace temperature under different air coefficient.(5) Calculating thermal balance of the furnace, analysis of energy saving effect of the new furnace.(6) To further examine the effect of reduction, calculate the furnace temperature and gas flow with fluent software, and contrast the simulation results about different fuel supply programs.This paper is a new attempt of using a mathematical model to guide the structure design, the research result provides important theoretical basis for the industrial experiment of refractory ore depth reduction furnace.

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