Blast furnace taphole combined brick

Abstract

The invention discloses a blast furnace taphole combined brick which comprises a fan-shaped brick and a taphole drainage brick. The combined brick is divided into four ring bricks from the interior to exterior of the blast furnace, the inner and outer ring bricks are staggered and are arranged in a stepped mode during masonry, horizontal straight joints are avoided, and the problem of flue gas leakage in the blast furnace is well solved. Moreover, a large-end arc surface of the brick body is combined with a small-end arc surface of another brick body, the arc surfaces are in tight fit with each other, the annular gaps are small, the sealing property is high, and the problem that the brickwork joint is large after the used planar bricks are combined is solved. According to the structure, an independent self-locking structure is formed at the taphole, the overall structural stability is enhanced, the problem that the furnace body collapses due to brick dropping in production is solved, and the brick is convenient to build, stable in structure and tight in sealing.

Description

technical field [0001] The invention relates to a blast furnace taphole composite brick, in particular to a composite brick structure composed of fan-shaped bricks and taphole nozzle bricks. Background technique [0002] The blast furnace taphole is an important part of the blast furnace, with a relatively complex structure, and refractory bricks are wrapped around the tapping hole. The original iron mouth structure of the blast furnace was that all masonry horizontal joints lead from the working face to the cooling wall, and the airtightness is not good, causing the flue gas in the blast furnace to spray out along the horizontal joints. The ejected flue gas increases the gas concentration on the blast furnace platform, and the dust flies around, which affects the working environment and causes pollution and other problems. At the same time, the bricks around the tap hole do not form a self-locking structure, resulting in unstable structure around the tap hole Well, it is e...

AI Technical Summary

Problems solved by technology

However, the channel combination bricks of this structure are placed in alignment during masonry, causing the brick joints of the inner and outer rings to be staggered, which affects the stability of the structure, and the iron mouth bricks of the inner ring often fall

The horizontal and vertical joints between bricks are large, and the joints are open, and the seal is not good

Therefore, the bricks around the iron hole have poor sealing and poor stability, and bricks often fall off, collapse, and smoke leaks out.

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