CN1117527A - Brick-building art at the area of tuyeres of blast furnace - Google Patents

Abstract

In the method big special shaped nitrogen-carbofrax bricks are used. As compared with the prior art building method, the quantity of bricks is decreased to 1/4, the total seam-length is decreased to 1/3 and the seams are not straight. Advantages: increased integrality, stability and anti-corrosion, doubled service life, decreasing crash ratio to 1/2 and man-hour for building to 1/2.

Description

The brick-building art in blast-furnace tuyere district

The invention belongs to the smelting equipment manufacturing process of the iron in the field of metallurgy, specifically is the brick-building art in blast-furnace tuyere district.

At present, the blast-furnace tuyere district builds the high alumina brick that generally all adopts standard type, common refractory bricks such as clay brick by laying bricks or stones.Because this fragment of brick is little, usage quantity is many, it is many to build the back straight joint by laying bricks or stones, and adopt the refractory material brick that does not fit into this district's working order, cause the too early damage of the masonry in this district and come off, this not only influences the work-ing life of tuyere zone, and because the coming off of tuyere zone masonry, cause coming off of tuyere zone top bosh, furnace bosh district masonry, finally influence the work-ing life of whole blast furnace.

The brick-building art that the purpose of this invention is to provide a kind of blast-furnace tuyere district adopts the refractory materials that is more suitable for blast-furnace tuyere district working order simultaneously, and raising blast-furnace tuyere district is until the work-ing life of whole blast furnace.

The object of the present invention is achieved like this:

1, in the design of brick shape, adopt the bulk special shaped brick, according to different blast furnaces, the brick type of design different size.The tuyere zone furnace lining of general blast furnace only needs tens kinds of brick types, 300～400 bricks just can satisfy the service requirements of brick, be original 1/4th of the standard square that adopts, and the brickwork joint length overall has only 1/3rd of former technology brickwork joint length overall, this has improved tuyere zone masonry strength and stability undoubtedly, has reduced the factor that causes the breakage of tuyere zone masonry easily.

2, on building method, adopted and stung the block method, thereby reduced straight joint, reduced high-temperature gas and melt substance penetrativity, improved globality, stability and the erosion resistance of masonry.

3, on building material, selected high temperature resistant, wear-resistant, thermal conductivity is good, hot strength is good, stability at elevated temperature the is good nitrogen bonded silicon carbide brick that is fit to this district's working order for use.

Brick-building art construction of the present invention is simple and convenient, and the duration can reduce 1/2nd, because the overhaul time of having reduced blast furnace has brought remarkable economic efficiency for enterprise resumes production as early as possible.

In addition, adopt brick-building art of the present invention can protect air port equipment effectively, air port equipment breakage rate is significantly descended; the also corresponding minimizing of damping down time; and held the refractorily lined of bosh preferably, made it to be difficult for coming off very soon, played the effect in prolongation blast furnace work-ing life with the upper part.

Below in conjunction with accompanying drawing enforcement of the present invention is described in further detail.

Accompanying drawing 1 is from the front view of blast furnace center to the tuyere zone direction;

Accompanying drawing 2 is A--A sectional views among Fig. 1;

Accompanying drawing 3 is orthographic plans of tuyere zone bulk special shaped brick.

(1) air port among the figure; Four blocks of bulk special shaped bricks of (2) one rings; (3) bicyclic bulk special shaped brick; (4) trinucleated bulk special shaped brick; (5) (6) (7) (8) are respectively sandwich brick; (9) be cooling stave; (10) with the casting resin of big brick with material.

As can be seen from Figure 1 air port (1) is to be built by laying bricks or stones by 4 blocks of bulk special shaped bricks (2) on every side.Between two air ports, use sandwich brick the building in (5) (6) (7) (8) respectively.

As can be seen from Figure 2 the ring of three around air port brick is respectively to be built by laying bricks or stones by (2) (3) (4), and four bricks of every ring have 12 blocks of special shaped bricks.

Fig. 3 is the orthographic plan of tuyere zone bulk special shaped brick.As can be seen from the figure the ring of three around air port bricks are not straight joints vertically, but are designed to the dislocation seam, and what the sandwich brick between two air ports neither straight joint is the fissure of displacement between the levels, and to be that (7) (8) are staggered build by laying bricks or stones following one deck of (5) (6).Adopt powder adding additives to link between brick and the brick, the same powder-material filling of adopting with material of brick and air port equipment with material.The present invention can be widely used in the brick-building art in blast-furnace tuyere district.

Claims (2)

1, the brick-building art of a kind of blast-furnace tuyere district refractory materials is characterized in that this technology is to adopt the bulk special shaped brick to build by laying bricks or stones, and adopts the block method of stinging between each ring brick and the brick.

2, a kind of according to the described brick-building art of claim 1, it is characterized in that the brick that uses is nitrogen bonded silicon carbide brick.

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