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Evaluation method of bottom bottom tuyere integrity of bottom blown converter, method of extending life of bottom tuyere, and operation method of bottom blown converter
Evaluation method of bottom bottom tuyere integrity of bottom blown converter, method of extending life of bottom tuyere, and operation method of bottom blown converter
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机译:底吹转炉的底部风口完整性评价方法,延长底风口寿命的方法以及底吹转换器的操作方法
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摘要
PROBLEM TO BE SOLVED: To evaluate safety in a furnace bottom tuyere of a bottom blowing converter in a short time period and accurately.SOLUTION: There is provided a furnace bottom tuyere safety evaluation method of a bottom blowing converter 1 comprising furnace bottom tuyeres 4 having a double pipe structure of an inner pipe blowing refining oxygen gas and an outer pipe blowing cooling propane gas, which comprises a photographing step of taking photographs of the plurality of furnace bottom tuyeres with a camera 9 comprising an optical element after completion of discharging residue from the bottom blowing converter, a mushroom detecting step of detecting mushrooms 10 formed on each of the furnace bottom tuyeres from furnace bottom image including the plurality of furnace bottom tuyeres photographed in the photographing step, an area calculation step of calculating area of each mushroom detected in the detection step, an area comparison step of comparing the mushroom area calculated in the area calculation step with a predetermined reference area so as to carried out comparison whether the calculated mushroom area is within the reference area, and a tuyere safety determination step of determining that the furnace bottom tuyeres are safety based on the result in the area comparison step.SELECTED DRAWING: Figure 1
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