CN202766554U

CN202766554U - Bricks for lower portion of blast-furnace tuyere

Info

Publication number: CN202766554U
Application number: CN201220432123.9U
Authority: CN
Inventors: 冯运生; 李平; 韩忠毅; 高长贺; 薄兰军; 薄广远; 卫迎锋; 王治峰; 马飞; 马淑龙; 王浩杰; 吕雪艳; 孙艳粉
Original assignee: GONGYI TONGDA ZHONGYUAN REFRACTORY TECHNOLOGY Co Ltd; TONGDA REFRACTORY TECHNOLOGIES Co Ltd
Current assignee: Beijing Jinyu Tongda Refractory Technology Co ltd; Gongyi Tongda Zhongyuan Refractory Technology Co ltd
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-03-06
Anticipated expiration: 2022-08-29

Abstract

The utility model provides bricks for a blast-furnace tuyere and particularly relates to bricks for the lower portion of the blast-furnace tuyere. The cross sections of the bricks for the lower portion are uniformly varying cross sections, the outer shape of each cross section is rectangular, the inner portions of the cross sections are concave notches arranged in the middles of long sides of the rectangle, each concave notch is formed by connecting an inner arc and an outer arc at the position of two sides in internal and external mode, the inner arc and the outer arc have the same circle center, and central angles corresponding to the inner arcs of the concave notches range from 120 degrees to 180 degrees. The bricks for a slag port corner are simple in structure, easy to splice and combine, rapid in construction speed, high in efficiency, capable of being molded through compression, low in production cost, stable in quality, long in service life and particularly suitable for popularization and application.

Description

Blast-furnace tuyere bottom brick

Technical field

A kind of blast-furnace tuyere brick of the utility model particularly relates to a kind of blast-furnace tuyere bottom brick.

Background technology

At present, high end furnace mostly adopts cirque structure, and this structure is to be different from common plane to build by laying bricks or stones building by laying bricks or stones, it is large to build difficulty by laying bricks or stones, owing to zone, air port inside liner arc surface, press the brick type very complex of the modular tile of arc surface design, all stricter to the requirement of brick type and brickwork joint coating.Local even need manual ramming, perhaps cast, vibrating forming, this conventional design method makes troubles to production, difficult quality control, yield rate is low, and difficulty is built at the scene by laying bricks or stones.Especially the setting in sidewall air port, the air port, side of annular further strengthen the difficulty of building by laying bricks or stones, the situation of doing over again occurs easily, and affect whole construction speed.

Summary of the invention

The technical problems to be solved in the utility model overcomes above-mentioned the deficiencies in the prior art exactly, and provides a kind of simple in structure, can improve operating efficiency, and production cost is low, the blast-furnace tuyere bottom brick of high life.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of blast-furnace tuyere bottom brick, described bottom is to wait variable cross-section with the brick cross section, and the outer shape of each cross section is rectangle, the inside of cross section is the concave indentation that the middle part arranges on the rectangular long limit, and described concave indentation is connected and composed inside and outside the place, both sides by the interior circular arc of concentric and external arc.

The value range of the corresponding central angle alpha of interior circular arc of described concave indentation is 120 °-180 °.

The beneficial effect of technical solutions of the utility model is:

1, structurally, the utility model blast-furnace tuyere bottom is rectangle with brick cross section outer shape, and is simple in structure and regular, and easily match-place combination is beneficial to enforcement, and speed of application is fast, and efficient is high; Since can mechanical pressing, steady quality, efficient is high, thereby has reduced production cost, and build by laying bricks or stones at the scene of being convenient to, but also improved the work-ing life in air port.

2, structurally, concave indentation described in the utility model is connected and composed inside and outside the place, both sides by the interior circular arc of concentric and external arc, the value range of the corresponding central angle alpha of interior circular arc of described concave indentation is 120 °-180 °, is conducive to shutoff and sealing, has greatly improved operating efficiency.

3, to sum up, the utility model cinder notch bight is simple with brick structure, easily match-place combination, and speed of application is fast, and efficient is high, can compression moulding, production cost is low, steady quality, therefore high life, is very suitable for promotion and implementation.

Accompanying drawing and explanation

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is the structural representation that brick is used in the utility model blast-furnace tuyere bottom;

Fig. 2 is the plan structure synoptic diagram that brick is used in blast-furnace tuyere shown in Figure 1 bottom;

Sequence number among the figure: 1, bottom brick, 2, interior circular arc, 3, external arc.

Embodiment

Embodiment:

Referring to Fig. 1, Fig. 2, among the figure, the utility model blast-furnace tuyere bottom brick, described bottom is to wait variable cross-section with the brick cross section, and the outer shape of each cross section is rectangle, and to be the middle part arranges on the rectangular long limit the described concave indentation of concave indentation connected and composed inside and outside the place, both sides by interior circular arc 2 and the external arc 3 of concentric in the inside of cross section.

The value range of the interior circular arc 2 corresponding central angle alpha of described concave indentation 1 is 120 °-180 °.

The above only is the schematic embodiment of the utility model; be not to limit scope of the present utility model; equivalent variations and modification that any those skilled in the art makes under the prerequisite that does not break away from the utility model design and principle all should belong to the scope that the utility model is protected.

Claims

1. blast-furnace tuyere bottom brick, described bottom is to wait variable cross-section with the brick cross section, and the outer shape of each cross section is rectangle, the inside of cross section is the concave indentation that the middle part arranges on the rectangular long limit, it is characterized in that: described concave indentation is connected and composed inside and outside the place, both sides by the interior circular arc of concentric and external arc.

2. blast-furnace tuyere according to claim 1 bottom brick, it is characterized in that: the value range of the corresponding central angle alpha of interior circular arc of described concave indentation is 120 °-180 °.