CN219624496U

CN219624496U - Hot stove eye structure in ferroalloy ore deposit that can change alone

Info

Publication number: CN219624496U
Application number: CN202320295931.3U
Authority: CN
Inventors: 吴云鹏; 朱怀灵; 赵亮; 刘文涛; 杨添贺; 谷兵伟; 徐强; 许会强; 陈占斌
Original assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Current assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-09-01
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses a single-replaceable ferroalloy submerged arc furnace hole structure, which is provided with at least one group of cushion bricks; building furnace hole protection bricks on the pad bricks; the furnace eye protection bricks are multiple rings arranged up and down; building furnace hole bricks at the center of the multi-ring furnace hole protection bricks; at least one group of pressing bricks are built on the multi-ring furnace hole protecting bricks; each group of the pad bricks and the pressing bricks are two blocks which are arranged front and back; the pad bricks, the furnace hole protection bricks, the furnace hole bricks and the pressing bricks form furnace hole combined bricks; building double-layer base bricks on two sides of the furnace hole combined brick; the double-layer base bricks comprise working layer double-layer base bricks and non-working layer double-layer base bricks, square refractory bricks are built on two sides of the furnace hole bricks, and the front row and the rear row are independent, and the left row and the right row are parallel; the upper part of the double-layer base brick is also built with double-layer arch bricks. The utility model solves the problem that part of the large wall and the molten pool brick must be removed when the furnace hole is replaced.

Description

Hot stove eye structure in ferroalloy ore deposit that can change alone

Technical Field

The utility model belongs to the technical field of metal smelting equipment, and particularly relates to an independently replaceable iron alloy submerged arc furnace hole structure which is used for smelting iron alloy.

Background

The iron alloy submerged arc furnace is high-temperature metal smelting equipment, and generally adopts a high-temperature resistant carbonaceous or magnesia material as a molten pool lining structure, and comprises a molten pool part, a furnace bottom part, a furnace hole part and the like; the furnace hole part is the core part of the whole submerged arc furnace lining, and has the function of leading smelted molten iron out of a hearth and is a channel for molten iron to flow out; in order to ensure the service life of the furnace hole, the furnace hole is usually made of materials resistant to molten iron erosion, thermal shock and high temperature, and the material grade is far higher than that of other parts. The furnace eye is directly impacted and eroded by molten iron, is extremely easy to damage, has the service life of generally less than 1 year and needs to be frequently repaired and replaced; the existing furnace lining masonry structure is characterized in that furnace eyes are generally built and placed on furnace walls at two ends, the furnace eyes are built with furnace wall refractory materials into a whole, when the furnace eyes are replaced, the furnace eye region refractory materials cannot be removed and replaced independently, the furnace lining materials connected with the furnace eyes are also required to be removed and replaced, however, the furnace lining materials can be used continuously for 4-5 years, the material waste is caused by the advanced replacement, and meanwhile, the construction efficiency is reduced and the personnel cost is improved.

Disclosure of Invention

The utility model aims to provide a furnace hole structure of an iron alloy ore smelting furnace, which can be independently replaced, so that the furnace hole bricks can be independently replaced or the furnace hole bricks can be partially replaced, and the problems of asynchronous service lives of the furnace hole bricks and a furnace lining and waste of furnace lining materials are solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a separately replaceable ferroalloy submerged arc furnace hearth structure having at least one set of packing bricks; building furnace hole protection bricks on the pad bricks; the furnace eye protection bricks are multiple rings arranged up and down; building furnace hole bricks at the center of the multi-ring furnace hole protection bricks; at least one group of pressing bricks are built on the multi-ring furnace hole protecting bricks; each group of the pad bricks and the pressing bricks are two blocks which are arranged front and back; the pad bricks, the furnace hole protection bricks, the furnace hole bricks and the pressing bricks form furnace hole combined bricks; building double-layer base bricks on two sides of the furnace hole combined brick; the double-layer base bricks comprise working layer double-layer base bricks and non-working layer double-layer base bricks, square refractory bricks are built on two sides of the furnace hole bricks, and the front row and the rear row are independent, and the left row and the right row are parallel; the upper part of the double-layer base brick is also built with double-layer arch bricks.

The double-layer arch brick comprises a working layer double-layer arch brick and a non-working layer double-layer arch brick.

And a filling material is filled between the double-layer arch bricks and the pressing bricks.

According to the independently replaceable iron alloy submerged arc furnace hole structure, a double-layer arching method is adopted to separate the furnace hole bricks from the upper large wall, so that the gravity backlog of the upper large wall can be effectively decomposed, and the risk of heavy pressure deformation and damage of the furnace hole bricks is reduced;

2. the furnace hole combined bricks are independent of the large wall bricks of the molten pool and the large wall with the upper part pressed against by adopting a method of a coupon, so that the furnace hole bricks can be independently replaced; the furnace lining material can be ensured to be continuously used for 4 to 5 years, and the furnace lining material can not be replaced in advance due to the damage of furnace eye bricks.

3. The life of the hearth brick near the bath end is far lower than that of the outer brick of the tap hole. The furnace hole brick is formed by combining a plurality of masonry blocks, and the furnace hole protection brick, the cushion brick and the pressing brick are divided into a front part and a rear part, so that the furnace hole brick can be partially replaced under the necessary condition.

Drawings

FIG. 1 is a schematic diagram of a structure of the present utility model;

FIG. 2 is a schematic view of the left side view of the center section of FIG. 1;

FIG. 3 is a schematic top view of the center section of FIG. 1;

in the figure: 1. furnace hole bricks; 2. furnace eyes surround the bricks; 3. furnace eye cushion bricks; 4. furnace intraocular pressure brick; 5. a working layer base brick; 6. a non-working layer foundation brick; 7. working layer arch bricks; 8. non-working layer arch bricks; 9. a filler; 10. and (3) large wall bricks at the corrosion part, and 11. Large wall bricks at the furnace wall part.

Description of the embodiments

An iron alloy submerged arc furnace hole masonry structure capable of being replaced independently is characterized in that the furnace hole position is determined on a wall brick at the lower part of a submerged arc furnace, two half graphite silicon carbide material bricks are adopted to be built at a designated position on the furnace wall, and the sizes of the bricks are 600 x 200 x 450mm; the furnace eye protection bricks and the furnace eye protection bricks are laid on the cushion bricks, the material is semi-graphite silicon carbide, each ring of furnace eye protection bricks is formed by four square bricks through biting and laying, the dimension of the furnace eye protection bricks is about 600 mm by 150mm by 200mm, and the furnace eye protection bricks are laid in a total of 6 rings. The furnace eye bricks are built in the center of the brick protection, the sizes of the furnace eye bricks are about 300 x 150mm, the whole furnace eye is built by 8 blocks from inside to outside, and the length of the furnace eye is 1200mm; the front and rear pressing bricks are built on the furnace hole combined bricks, and the material and the size of the pressing bricks are basically consistent with those of the cushion bricks; further, the base bricks of the arch bricks are laid on the two sides of the combined brick of the furnace hole on the furnace wall, the front and the back are separately laid, the two layers of single sides are separately laid, the silicon carbide bricks are used as materials, the double-layer arch brick is prepared, the height of the base bricks is equal to the height of the molten pool bricks, and the height is 1000mm. The working end is made of silicon carbide bricks, and the non-working end is made of LZ-75 high-alumina bricks.

According to the method, two furnace hole structures are built on the furnace wall of the submerged arc furnace, and further, large wall bricks at other parts of the molten pool are built; further, the coupon tire is built by adopting knife-type bricks with the size of 230 x 114 x 65/55 to construct double-layer arch bricks, and the arch bricks are divided into a front row and a rear row; the working end is made of silicon carbide bricks, the non-working layer is made of LZ-75 high-alumina bricks, and further, other furnace wall parts at the upper part of the molten pool are built, and corundum castable is constructed under the arch coupon.

The furnace lining refractory is used for six years, and is not replaced in the middle.

Claims

1. An iron alloy ore smelting furnace eye structure that can change alone, its characterized in that: the independently replaceable ferroalloy submerged arc furnace hearth structure is provided with at least one group of cushion bricks; building furnace hole protection bricks on the pad bricks; the furnace eye protection bricks are multiple rings arranged up and down; building furnace hole bricks at the center of the multi-ring furnace hole protection bricks; at least one group of pressing bricks are built on the multi-ring furnace hole protecting bricks; each group of the pad bricks and the pressing bricks are two blocks which are arranged front and back; the pad bricks, the furnace hole protection bricks, the furnace hole bricks and the pressing bricks form furnace hole combined bricks; building double-layer base bricks on two sides of the furnace hole combined brick; the double-layer base bricks comprise working layer double-layer base bricks and non-working layer double-layer base bricks, square refractory bricks are built on two sides of the furnace hole bricks, and the front row and the rear row are independent, and the left row and the right row are parallel; the upper part of the double-layer base brick is also built with double-layer arch bricks.

2. A single replaceable ferroalloy submerged arc furnace hearth structure according to claim 1, wherein: the double-layer arch brick comprises a working layer double-layer arch brick and a non-working layer double-layer arch brick.

3. A single replaceable ferroalloy submerged arc furnace hearth structure according to claim 1, wherein: and a filling material is filled between the double-layer arch bricks and the pressing bricks.