CN201334487Y

CN201334487Y - Taphole structure of a stable type large-scale blast furnace

Info

Publication number: CN201334487Y
Application number: CNU2008201562398U
Authority: CN
Inventors: 王立辉; 励军; 万强
Original assignee: Shanghai Baosteel Industry Inspection Corp
Current assignee: Shanghai Baosteel Industry Inspection Corp
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-10-28
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to an ironmaking furnace kiln, in particular to a large-scale blast furnace taphole, and discloses a taphole structure of a stable type large-scale blast furnace, which comprises a permanent brick layer, a protective brick layer and a taphole framework; wherein the center of the permanent brick layer comprises upper left, lower left, upper right and lower right taphole combined bricks with neck brick structure; One corner of each taphole combined brick is provided with one quarter circle respectively and is combined to a circular taphole; the four taphole combined bricks form an upper contact surface, a lower contact surface, a left contact surface and a right contact surface; and each contact surface is respectively provided with steps which can be assembled together. The utility model can not only ensure the structural stability of the taphole masonry, but also can prolong the service life of the taphole, lessen the coal gas fire run degree and improve the tapping safety.

Description

A kind of iron mouth structure of stable form large blast furnace

Technical field

The utility model relates to the ironmaking stove, especially relates to a kind of large blast furnace iron mouth.

Background technology

The present more employing brickwork construction of iron mouth of domestic and international large blast furnace; the blast furnace taphole part generally is made up of iron mouth permanent layer brick and protection tile; the hole that diameter 200-400mm is reserved at iron mouth masonry center is as the effusive passage of molten iron (according to furnace volume different diameter also difference to some extent); iron mouth brick cavity needs the filling stemming; holing on stemming with tapping machine when tapping a blast furnace flows out molten iron, taps a blast furnace and carries out the stemming shutoff with the clay gun machine when finishing.Under the normal circumstances, an iron mouth that normally taps a blast furnace need carry out 5-6 in one day and return such operation, and the design of the brick type of brick is less than normal around the Tie Kou center, and security measure, therefore in use, owing to bear the mechanical shock of stifled mud of clay gun machine and taphole drilling machine opening repeatedly, situations such as loosening, the local or whole evagination of masonry structure very easily appear in iron mouth brick, when serious even can cause and cave in.Connection loosing gently then has influence on the stokehold operation of mud cover, coal gas is scurried fire and strengthened, and is heavy then can have influence on the safety of tapping a blast furnace.Common, the damaged speed of this spline structure is suitable, and the iron mouth generally is no more than 1 year soon just needs to change the permanent layer brick, can not adapt to the needs of high smelting intensity.

Summary of the invention

The utility model is intended to solve the above-mentioned defective of prior art, and a kind of iron mouth structure of stable form large blast furnace is provided.The utility model not only guarantees the structural stability of iron mouth masonry, and can prolong the iron mouth work-ing life, alleviate coal gas and scurry fiery degree and improve the security of tapping a blast furnace.

The utility model is achieved in that

A kind of iron mouth structure of stable form large blast furnace; it comprises permanent brick layer, protection tile layer and iron mouth framework; that described permanent brick layer center comprises is upper left, lower-left, upper right and iron mouth modular tile that four of bottom rights have the neck brick structure; each iron mouth modular tile all has quadrntnt and constitutes a circular iron mouth for one jiao; and four contact surfaces in the formation upper and lower, left and right of four iron mouth modular tiles, each contact surface has amalgamation step together mutually respectively.

The iron mouth structure of described a kind of stable form large blast furnace, the upper surface step of the iron mouth modular tile of described lower-left and bottom right is low early and high after, and the step of their contact surfaces is opposite with the step direction of upper left, upper right iron mouth modular tile contact surface.

The iron mouth structure of described a kind of stable form large blast furnace, protect at the outside surface of described permanent layer and bag and also to be provided with the metal baffle that prevents the brick evagination between the brick layer, this metal baffle utilizes the metal framework around the iron mouth to be welded on the iron mouth framework as the basis, exposed portions serve is close to iron mouth modular tile surface, and baffle surface also has gusset.

The utility model increases the Tie Kou center brick type of permanent layer brick on every side, becomes the bulk modular tile of concavo-convex snap close to constitute by 4 Interface design each other; To increase the snap-in force between the brick, improve the integrally-built stability of masonry; Set up the metal baffle structure on permanent layer brick surface; the outside is built protection tile again and is formed protection to metal baffle; delay evagination trend, thereby guarantee the structural stability of iron mouth masonry, and can prolong the iron mouth work-ing life, alleviate coal gas and scurry fiery degree and improve the security of tapping a blast furnace.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments:

Fig. 1 is an iron mouth structure synoptic diagram of the present utility model;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the iron mouth modular tile brick type structural representation of permanent layer.

Embodiment

As depicted in figs. 1 and 2; a kind of iron mouth structure of stable form large blast furnace; it comprises permanent brick layer 1, protection tile layer 2 and iron mouth framework 3; that described permanent brick layer 1 center comprises is upper left, lower-left, upper right and iron mouth

modular tile

11,12,13 and 14 that four of bottom rights have the neck brick structure; each iron mouth modular tile all has quadrntnt and constitutes a circular iron mouth for one jiao; and four contact surfaces in the formation upper and lower, left and right of four iron mouth modular tiles, each contact surface has amalgamation step 4 together mutually respectively.Between the outside surface of described permanent layer 1 and protection tile layer 2, also be provided with the metal baffle 5 that prevents the brick evagination, this metal baffle 5 utilizes the metal framework around the iron mouth to be welded on the iron mouth framework 3 as the basis, exposed portions serve is close to iron mouth modular tile surface, it is unsuitable wide that metal baffle 5 is blocked iron mouth modular tile, the brick that is generally 1/5-1/2 is wide, to avoid crossing nearly back temperature distortion and scaling loss, influence result of use from iron mouth hot side; Metal baffle 5 surfaces also have gusset 6.

As schematically shown in Figure 3, the upper surface step 4 of the iron mouth

modular tile

11,14 of described lower-left and bottom right is low early and high after, and the step 4 of their contact surfaces is opposite with step 4 directions of upper left, upper right iron mouth

modular tile

12,13 contact surfaces.Begin according to four iron mouth modular tiles counterclockwise are installed from the lower-left in the time of installation.

Claims

1, a kind of iron mouth structure of stable form large blast furnace; it comprises permanent brick layer, protection tile layer and iron mouth framework; it is characterized in that; that described permanent brick layer center comprises is upper left, lower-left, upper right and iron mouth modular tile that four of bottom rights have the neck brick structure; each iron mouth modular tile all has quadrntnt and constitutes a circular iron mouth for one jiao; and four contact surfaces in the formation upper and lower, left and right of four iron mouth modular tiles, each contact surface has amalgamation step together mutually respectively.

2, the iron mouth structure of a kind of stable form large blast furnace according to claim 1, it is characterized in that, the upper surface step of the iron mouth modular tile of described lower-left and bottom right is low early and high after, and the step of their contact surfaces is opposite with the step direction of upper left, upper right iron mouth modular tile contact surface.

3, the iron mouth structure of a kind of stable form large blast furnace according to claim 1 and 2, it is characterized in that, protect at the outside surface of described permanent layer and bag and also to be provided with the metal baffle that prevents the brick evagination between the brick layer, this metal baffle utilizes the metal framework around the iron mouth to be welded on the iron mouth framework as the basis, exposed portions serve is close to iron mouth modular tile surface, and baffle surface also has gusset.