Design Method of Converter Bottom Transition Brick

Abstract

The invention discloses a method for designing a transition brick at the bottom of a converter, comprising the steps of: S1, determining design parameters; S2, designing a circular furnace bottom area; S3, designing the relative height of the lower surface of the lowermost furnace body brick layer; S4 1. Design the transition brick as a radial hexahedron structure, and determine the size of the transition brick according to the design results of steps S2 and S3. The design method of the converter bottom transition brick of the present invention optimizes the structure of the transition zone, the integrity of the furnace bottom-melting pool and the furnace body is stronger, the thermal stress of the furnace bottom and the melting pool area is effectively dispersed and decomposed, and the furnace bottom and the melting pool are reduced Magnesia carbon brick melting loss.

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 Image 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 the...

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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