Straight Rib Checker Brick

Abstract

The invention discloses a straight rib hole lattice brick (1) for a blast-furnace hot blast stove. The straight rib hole lattice brick (1) is provided with a top surface (2) and a bottom surface (3) opposite to the top surface, wherein a plurality of passages (4) extend from the top surface (2) to the bottom surface (3), straight ribs (6) are attached to the extending surfaces of the passages (4) so that fluid penetrates through the straight rib hole lattice brick (1) and flows, a spacing wall (5) is formed between the adjacent passages (4), and the vertical distances between the end surfaces (7) of the straight ribs (6) and the top surface (2) and between the end surfaces (8) of the straight ribs (6) and the bottom surface (3) are 0 to 50 millimeters. The straight rib hole lattice brick has the advantages of large heating area, large filling coefficient and easiness in manufacturing; the unit heating area of the lattice brick can be changed by changing the number of the straight ribs, and the materials for the straight rib hole lattice brick are also changed, so that the straight rib hole lattice brick can simultaneously meet the working properties on different heights of a heat storage chamber of the hot blast stove and greatly improve the working efficiency of the hot blast stove.

Description

[0001] 1. Technical field [0002] The invention relates to a checker brick for a hot blast stove of an ironmaking blast furnace, in particular to a checker brick with straight rib holes. [0003] 2. Background technology [0004] Checker bricks are heat accumulators for hot blast stoves and a heat transfer medium that plays an extremely important role in the process of heating cold air into hot air. [0005] The basic working characteristics of the regenerator of the hot blast stove at different heights are that the high temperature area above the regenerator has strong heat transfer (radiation and convection) conditions, so the weight of the checker brick per unit volume and the use of refractory materials with higher heat capacity should be considered. ; The main form of heat transfer in the low temperature area of ​​the regenerator is convection, so the gas flow rate in the checker brick channel should be increased as much as possible, and the degree of turbulence of the ai...

AI Technical Summary

Problems solved by technology

[0006] The hot blast stoves in the prior art usually use seven-hole or nineteen-hole checker bricks. The material of the checker bricks can change in the height of the regenerator but cannot change the specific surface area per unit. Therefore, the hot blast stoves in the prior art use a These types of checker bricks cannot meet the working characteristics of the hot blast stove regenerator at different heights at the same time

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