Development Of Blast Furnace Hearth ErosionCalculation Software

The blast furnace is one of the important throat equipment in the steel metallurgical production and the main equipment carrier in the iron-making procedure, its construction maintenance costs huge. The blast furnace longevity has the great significance to improve the economic benefit, and the erosion state of the blast furnace bottom is the main factor to decide the blast furnace life. When the blast furnace lining erosion reaches a certain extent, the furnace bottom will burst and thereby causes a serious accident. Premature boiler stop will lead to great waste, but if it not be stopped timely may cause a major accident. So real-time monitoring of the furnace hearth bottom erosion state has the practical significance to the extension of furnace life as far as possible while ensure its production safety.This article based on the heat transfer as the basic theory, on the basis of establishing mathematical model which describes the furnace hearth heat-transfer process, emphasis on the overall structure design of in-line analysis operation of the erosion system, then research and develop the technology of the erosion morphology of the furnace hearth and the temperature filed visualization of the shaft section, at last, complete the development work of the blast furnace lining erosion on-line analysis system.(1) Based on the heat transfer theory, the author summarizes the basic types of the blast furnace lining erosion analysis and researches the mathematical model calculation method of the blast furnace lining erosion analysis, through analysis and comparison, obtains the best analysis model in the diffident conditions. Then, select the most appropriate and accurate calculating method for the different erosion analysis model.(2) Combined with the specific conditions of the target balst furnace, the author detetmined to calculate the target blast furnace erosion boundary by two-dimensional axisymmetric I level model. She set16measuring point and form the temperature point surrounding the blast furnace through designing the layout of the target blast furnace. After in-depth research, struct the boundary conditions and the geometric boundary of the target blast furnace, calculated the initial erosion border vertices, and through reconstruction of the model and boundary mobile, The author calculated the lining erosion boundary of the target blast furnace.At last, she developed the blast furnace lining erosion analyisis system.(3) Based on the Visual C++platform, build the general framework of the blast furnace lining erosion analysis system and complete the system function design and logical processing. Using the interface technology between Visual C++and APDL and using the object-oriented programming method, packaging the APDL in the background to realize it nest Visual C++, then, develop the finite element analysis and calculation system. Using the interface technology between OpenGL and Visual C++, realize the furnace bottom surface erosion lined with three-dimensional visualization and provide users the overall erosion effect of the furnace.The research result has formed a special system, and has been used in the target blast furnace. It provides measures in lined with erosion and technology tools for real-time monitoring hearth in the operation of the target blast furnace.