CN211645352U

CN211645352U - Front bed with inverted arch bottom

Info

Publication number: CN211645352U
Application number: CN201922355620.8U
Authority: CN
Inventors: 符海; 李奖; 熊会圣; 何池胜
Original assignee: Jiangxi Self Independence Environmental Protection Technology Co ltd
Current assignee: Jiangxi Self Independence Environmental Protection Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-09
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a bed before anti-arch type bottom, including the forehearth shell, lay the inboard asbestos board of forehearth shell and lay the forehearth refractory material layer at the asbestos board inboard, the top of forehearth refractory material layer is equipped with the fan-shaped anti-arch that the inscribed circle is 60 jiaos. The two sides of the fan-shaped inverted arch are pressed by the graphite bricks, upward force is fully decomposed to the graphite bricks and the shell on the two sides, the inverted arch masonry mode can effectively prevent the graphite bricks from floating, the service life of the front bed is greatly prolonged, tin in the front bed can be discharged more thoroughly, the tin is prevented from being retained in the front bed, and the front bed is convenient to clean; the metallurgical process is optimized, the operation intensity of personnel is reduced, and the metallurgical production efficiency is improved.

Description

Front bed with inverted arch bottom

Technical Field

The utility model relates to a pyrometallurgical field, especially a reverse arch type bottom fore-bed.

Background

At present, the rapid development of the metallurgical industry, the expansion of the capacity, the successive establishment of large and ultra-large furnace bodies and matched facilities also face a plurality of problems. With further maturity of metallurgical technology, a large number of electric furnace tin smelting technologies are adopted, tin raw materials are smelted and reduced in an electric furnace, then tin slag is discharged from the electric furnace, and clarification and separation are carried out on a front bed. And because of the fluidity of tin and small surface tension, the tin is easy to permeate into the graphite brick at the bottom of the front bed, so that the graphite brick at the bottom of the front bed floats, the front bed is damaged, and the repair is needed repeatedly. Causing labor intensity and material waste.

Traditional forehearth bottom is planar structure, because the long-term contact high temperature solution in bottom causes stress concentration phenomenon easily and makes the graphite brick fracture, consequently uses polylith graphite brick to piece together and forms, nevertheless causes the tin to permeate to the bottom like this easily, floats the brick, so can cause the cinder notch to put the sediment inhomogeneous for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a reverse arch type bottom front bed.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a preceding bed of anti-arch type bottom, includes the preceding bed shell, lays the asbestos board of preceding bed shell inboard and lays the preceding bed refractory material layer of inboard at the asbestos board, the top of preceding bed refractory material layer is equipped with the fan-shaped anti-arch that the inscribed circle is a jiaos. The two sides of the sector inverted arch are pressed by graphite bricks, and the bottommost part of the sector inverted arch can be paved by ramming materials.

According to the inverted arch type bottom front bed, the shell of the front bed is formed by welding boiler steel.

In the counter-arch bottom front bed, the thickness of the asbestos plate is 9-11 mm.

In the reverse arch type bottom front bed, the material of the front bed refractory material layer is graphite brick or carbon brick.

In the reverse arch type bottom front bed, the gap between the contact surfaces of the graphite bricks is not more than 5 mm.

In the above inverted arch type bottom front bed, an angle a formed by inscribed circles of the sector inverted arch is an angle of 60 °.

The utility model has the advantages that: the top of the front bed refractory material layer of the structure is provided with a fan-shaped inverted arch with an inscribed circle forming an angle of 60 degrees, two sides of the fan-shaped inverted arch are pressed by graphite bricks, upward force is fully decomposed to the graphite bricks and the shell on two sides, the floating phenomenon of the graphite bricks can be effectively prevented by an inverted arch building mode, the service life of the front bed is greatly prolonged, tin in the front bed can be discharged more thoroughly, the tin is prevented from being retained in the front bed, and the front bed is convenient to clean; the metallurgical process is optimized, the operation intensity of personnel is reduced, and the metallurgical production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in figure 1, the inverted arch type bottom front bed comprises a front bed shell 1, an asbestos plate 2 laid on the inner side of the front bed shell 1 and a front bed refractory material layer 3 laid on the inner side of the asbestos plate 2, wherein a sector inverted arch 4 with an angle of a DEG in an inscribed circle is arranged at the top of the front bed refractory material layer 3. The angle a formed by the inscribed circle of the fan-shaped inverted arch 4 is 60 degrees, two sides of the fan-shaped inverted arch 4 are pressed by graphite bricks, and the bottommost part of the fan-shaped inverted arch can be paved by ramming materials. The material of the front bed refractory material layer 3 can be graphite brick or carbon brick.

The front bed shell 1 is formed by welding boiler steel, the thickness of the asbestos plate 2 is 9-11mm, and the contact surface gap of the graphite brick is not more than 5 mm. The steel plate and the steel plate are welded continuously, air leakage holes are avoided, and the height of a welding line is 10 mm; manufacturing conventional open-slope mouth welding for the steel plate and a welding container of the steel plate; and the melt inlet and outlet and the tin outlet are determined on site according to requirements.

The top of the front bed refractory material layer 3 of the structure is provided with a fan-shaped inverted arch 4 with an inscribed circle forming an angle of 60 degrees, two sides of the fan-shaped inverted arch 4 are pressed by graphite bricks, upward force is fully decomposed to the graphite bricks 4 on two sides and the shell 1, the floating phenomenon of the graphite bricks can be effectively prevented by an inverted arch masonry mode, the service life of the front bed is greatly prolonged, tin in the front bed can be more thoroughly discharged, the tin is prevented from being retained in the front bed, and the front bed is convenient to clean; the metallurgical process is optimized, the operation intensity of personnel is reduced, and the metallurgical production efficiency is improved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An inverted arch type bottom front bed is characterized by comprising a front bed shell, an asbestos plate and a front bed fireproof material layer, wherein the asbestos plate is laid on the inner side of the front bed shell, the front bed fireproof material layer is laid on the inner side of the asbestos plate, and a fan-shaped inverted arch with an inscribed circle forming an angle of 60 degrees is arranged at the top of the front bed fireproof material layer;

the front bed shell is formed by welding boiler steel, the thickness of the asbestos plate is 9-11mm, the front bed refractory material layer is made of graphite bricks or carbon bricks, and the contact surface gap of the graphite bricks is not more than 5 mm.