Design method of converter bottom transition brick

Abstract

The invention discloses a design method of a converter bottom transition brick. The design method comprises the following steps that S1, design parameters are determined; S2, a circular converter bottom area is designed; S3, the relative height of the lower surface of the lowermost converter body brick layer is designed; and S4, the transition brick is designed to be of a radiation type hexahedron structure, and the size of the transition brick is determined according to the design results of S2 and S3. According to the design method of the converter bottom transition brick, the structure of a transition area is optimized, the integrity of a converter bottom, a molten pool and a converter body is higher, the thermal stress of the converter bottom and the molten pool area is effectively dispersed and decomposed, and the melting loss of magnesia carbon bricks of the converter bottom and the molten pool is reduced.

Description

technical field [0001] The invention belongs to the technical field of converter lining in the metallurgical industry, in particular, the invention relates to a design method of transition bricks at the bottom of a converter. Background technique [0002] The existing converter bottom usually adopts "circular design, return to flat and turn over", that is, it is composed of magnesia carbon bricks for the furnace body, flat magnesia carbon bricks for the melting pool, flattened magnesia carbon bricks for the furnace bottom, triangular area and round furnace bottom magnesia carbon bricks Composition (structure such as Figure 6 shown). The structure of the circular furnace bottom and the molten pool and the flattening area of ​​the furnace bottom are not tight, and there are obvious triangular joints, which increases the risk of molten steel leakage; Brick melting loss is fast; in the follow-up maintenance process, it is difficult to maintain the ideal state of "concave in th...

AI Technical Summary

Problems solved by technology

The structure of the circular furnace bottom and the melting pool and the flattening area of ​​the furnace bottom are not tight, and there are obvious triangular joints, which increases the risk of molten steel leakage; Brick melting loss is fast; in the follow-up maintenance process, it is difficult to maintain the ideal state of "concave in the middle and convex edge" at the bottom of the furnace, the effect of reblowing and mixing is not good, the effective reblowing ratio is low, and there are great hidden dangers in production safety

[0003] Moreover, the transition brick or brick type designed by the existing method is single, and the integrity is not strong; or the characteristics of the transition section are not fully considered, the design parameters are single, and the brick cutting, grinding, and filling volume are large during single-layer, layer-to-layer masonry.

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