| Hot stove is the one of the key equipments of blast furnace ironmaking and the core of iron and steel enterprises, and to keep its well functioning is what manufacturers and designers often care about. The complicate force situation of furnace shell and the calculation of shell structure play a significant role in the designation of whole furnace, and serve as one of the important factors in the well manufacturing and functioning of ironmaking equipments. Since the founding of the nation, the designation of hot stove shell in China has made some achievements, such as the deep recognition of its force characteristics and accumulation of measured data plus successful designing experience. However, due to the complicate and special structure type and variable loads of hot stove, we have the limits on the recognition of the force situation of its shell, and lack the relative data accumulated, especially lacking the global stress analysis on the shell structure of hot stove. In a word, the shell structure designation of hot stove is still on the stage with the focus on experience supplemented by calculation. We haven't had the unified design concept of blast furnace and hot stove, and each iron and steel design institute comply with different standard of shell designation, which is inconsistent with the title as a big iron and steel country. Therefore, ministry of construction put the respective technical code of melting technological furnace on the list of formulation plan of engineering construction standard in 2006.According to the geometry size, load case, standard grade of steel, mechanical properties, boundary conditions and displacement difference of a 4350m~3 external combustion hot stove manufactured by an iron and steel group, this essay designs a whole space model through large universal finite element software, and analyzes in detail the stress and displacement under the elastic and elastic-plastic of hot stove shell by means of analysis and design method, including the analysis on each single load case and on the elastic and elastic-plastic of the most disadvantageous load effect combination. In addition, this essay analyzes and calculates the tensile capacity of concerning anchor bolt, and the displacement difference of the vault between regenerator and combustion chamber, the force of vault ring beam, as well as compares all these elements with simplified formula. At the same time, according to domestic statistics date, this essay makes one variant linear regression analysis on the thickness and corresponding diameter of every shell segment, makes out the calculation formula of shell thickness, and compares with the relevant formulae of steel pressure vessel.Through the overall analysis, calculation and comparison, the essay makes some valuable conclusions, and based on these conclusions, puts forward corresponding provisions and provision explanations for the technical code edited soon.
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