Flow splitting hole stove grate and hot-air stove lattice brick supporting system

Abstract

The invention relates to a flow splitting hole stove grate and a hot-air stove lattice brick supporting system. The flow splitting hole stove grate comprises a stove grate body which is integrally molded by casting, the stove grate body is divided into an upper segment, a middle segment and a lower segment in the height direction, a plurality of small holes are evenly distributed in the upper segment, wherein any 3 adjacent small holes are all arranged in equilateral triangles, every 3 adjacent holes are taken as one set to evenly form a plurality of hole sets, the middle segment and the lowersegment of each hole set are provided with a large hole, and the bottoms of the 3 small holes of each hole set communicate with the top of the corresponding large hole through inclined holes. According to the flow splitting hole stove grate, the small holes of the upper segment is used for being matched with ventilating lattice holes in lattice bricks, the large holes are adopted for the middle segment and the lower segment to increase the thickness of hole walls, so that ventilation requirements and strength requirements are met at the same time.

Description

technical field [0001] The invention relates to the technical field of hot blast stoves, in particular to a furnace grate with diversion holes and a support system for hot blast stove checker bricks with the furnace grate with diversion holes. Background technique [0002] As the carrier of the upper regenerating checker bricks, grates are used for hot blast stoves in ironmaking blast furnaces, and their ventilation holes are required to match those of the regenerating checker bricks. With the continuous development of high-temperature and long-life hot-blast stove design technology for ironmaking, the heating area of ​​the hot-blast stove checker brick can be increased by reducing the diameter of the ventilation holes of the heat storage checker brick, ensuring sufficient heat exchange per unit time and increasing the hot air. The volume of the heat storage body of the furnace checker brick increases the blast temperature of the blast furnace, so reducing the diameter of th...

AI Technical Summary

Problems solved by technology

This requires a large number of small and dense ventilation holes to be evenly distributed on the grate. The ventilation holes on the traditional grate are formed by casting or drilling, but they all adopt a straight hole structure. The dense form of the diameter directly leads to the reduction of the thickness of the hole wall and the reduction of the overall strength, making it difficult to provide effective strength support for the large number of checker bricks on the upper part

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