Modularized refractory material structure of air bellow of sintering machine

Abstract

The utility model discloses a modularized refractory material structure of a sintering machine air bellow, which belongs to the technical field of refractory material structures of sintering machine air bellow and is characterized in that a plurality of spliced refractory material modules are covered on the inner wall of the sintering machine air bellow; the refractory material module comprises a bottom plate, side plates are welded to the edges of the bottom plate, steel bars are welded in the bottom plate, a steel wire mesh is welded to the steel bars, and a space formed by the bottom plate and the side plates is filled with refractory materials. Modularized refractory material modules are spliced and covered on the inner wall of the air bellow of the sintering machine, and each refractory material module is independently processed and manufactured, so that a large amount of rebound materials generated by integral spraying construction are avoided, the consumption of refractory materials is reduced, the material cost is reduced, the refractory materials can be manufactured in advance, complete maintenance and curing of the refractory materials are ensured, and the wear-resistant and high-temperature-resistant strength is improved; installation is conducted through a sintering machine overhaul machine, the construction period is greatly shortened, the working efficiency of the sintering machine is improved, installation is convenient, and maintenance in the later production process is facilitated. The overall structure is simple, implementation is easy, and practicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering machine bellows refractory material structures, in particular to a modular refractory material structure of a sintering machine bellows. Background Art

[0002] A sintering machine is a special equipment used in sintering process. Its main function is to heat and compact powdered materials without reaching the melting point of the materials to form solid blocks with better mechanical properties.

[0003] The sintering machine bellows are a crucial component of the sintering process. Their design and maintenance directly impact sintering efficiency and product quality. Sintering machine bellows are typically located beneath the trolley tracks to extract sintering fumes from the trolleys.

[0004] The traditional sintering machine bellows structure is as follows Figure 5-6 As shown, the overall structure is an inverted rectangular cone, including two oppositely arranged first inner walls 21 and two oppositely arranged second inner walls 22; the upper edge of the sintering machine bellows is trumpet-shaped, that is, four relatively large sloped inclined surfaces are formed on the upper edge of the sintering machine bellows, which are two oppositely arranged first opening walls 11 and two oppositely arranged second opening walls 12, thereby facilitating the expansion of the exhaust range.

[0005] The inner wall of the sintering machine bellows is usually lined with amorphous refractory materials. Ordinary steel anchor nails or metal mesh are first welded to the surface, and then the entire structure is sprayed or manually applied with lightweight refractory spray coating. Due to the high temperature, high negative pressure, and high air volume characteristics of the sintering process itself, and the fact that the flue gas contains dust, small particles of sintered ore, and sulfides such as SO2, SO3, and H2S, the refractory lining of the bellows is easily worn and detached in this complex working environment and is constantly eroded by large amounts of high-speed hot and humid flue gas and small particles. This overall spray-coated refractory structure has a high rebound rate, large material consumption, and high cost. In addition, the spraying construction and refractory maintenance time are long, affecting the productivity of the sintering machine. Once the refractory material is partially detached, it is difficult to repair it with spraying, exposing the steel structure, causing large areas of rust and perforation, resulting in system air leakage, seriously affecting the output, quality, and energy consumption of the sintered ore. Utility Model Content

[0006] In order to solve the problems of traditional integrally sprayed sintering machine bellows refractory structure, such as large amount of spray rebound material, large amount of material used, high cost, long spraying construction and refractory maintenance time, which affect the productivity of the sintering machine, and difficulty in spray repair once the refractory material falls off, the utility model provides a modular refractory structure for the sintering machine bellows.

[0007] The utility model is realized through the following technical solutions:

[0008] A modular refractory structure for a sintering machine bellows, wherein each inner wall of the sintering machine bellows is covered with a plurality of assembled refractory modules; the refractory module comprises a bottom plate that can be welded to the inner wall of the sintering machine bellows, side plates are welded to the edge of the bottom plate, steel bars are welded to the side of the bottom plate away from the inner wall of the sintering machine bellows, and steel mesh is welded to the side of the steel bars away from the bottom plate, and the space formed by the bottom plate and the plurality of side plates is filled with refractory materials.

[0009] A further improvement of the present invention is that the refractory module is in the shape of a rectangle or a right-angled trapezoid.

[0010] A further improvement of the present invention is that each refractory module has a width of 400-500 mm and a length of 500-600 mm.

[0011] A further improvement of the present invention is that the steel bars are arranged in parallel and spaced apart and are welded to the base plate by spot welding.

[0012] A further improvement of the present invention is that the spacing between adjacent steel bars is 200-250 mm, and the spacing between welding points is 200-250 mm.

[0013] A further improvement of the present invention is that the mesh size of the wire mesh is 30x88mm and the thickness is 2-3mm.

[0014] A further improvement of the present invention is that adjacent refractory modules are fixed by welding.

[0015] A further improvement of the present invention is that the inner wall of each opening of the sintering machine bellows is covered and installed by a separate refractory module.

[0016] It can be seen from the above technical solutions that the beneficial effects of the present invention are:

[0017] Modular refractory modules are assembled and applied to the inner wall of the sintering machine's bellows. Each module is individually fabricated, eliminating the large amount of rebound material generated by the overall spraying process, reducing refractory consumption and lowering material costs. The modular design allows for pre-fabrication, ensuring complete curing and solidification of the refractory material, enhancing wear resistance and high-temperature strength. Refractory modules can be pre-fabricated and installed during sintering machine maintenance, significantly shortening the construction cycle and reducing sintering machine downtime. This improves sintering machine efficiency and increases sintered ore production. The easy installation facilitates subsequent maintenance and repairs during production. The overall structure is simple, easy to implement, and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the arrangement of the refractory modules on the first inner wall of a specific embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the arrangement of the refractory modules on the second inner wall of a specific embodiment of the present utility model.

[0021] Figure 3 This is a schematic diagram of the refractory module structure of a specific implementation method of the utility model.

[0022] Figure 4 This is a schematic cross-sectional view of a refractory module according to a specific embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the sintering machine bellows from the first perspective.

[0024] Figure 6 This is a schematic diagram of the structure of the sintering machine bellows from the second perspective.

[0025] In the accompanying drawings: 11. First opening wall, 12. Second opening wall, 21. First inner wall, 22. Second inner wall, 3. Refractory module, 31. Bottom plate, 32. Side plate, 33. Refractory, 34. Wire mesh, 35. Rebar. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0027] like Figure 5-6 The figure shows a schematic diagram of the sintering machine bellows structure, which is an inverted rectangular cone-shaped structure as a whole, including two oppositely arranged first inner walls 21 and two oppositely arranged second inner walls 22; the upper edge of the sintering machine bellows is in a bell-mouth shape, that is, the upper edge of the sintering machine bellows forms four relatively large sloped surfaces, which are two oppositely arranged first opening walls 11 and two oppositely arranged second opening walls 12, so as to facilitate the expansion of the exhaust range.

[0028] like Figure 1-4As shown, the utility model discloses a modular refractory structure of a sintering machine bellows, each inner wall (two first inner walls 21 and two second inner walls 22) of the sintering machine bellows is covered with a plurality of assembled refractory modules 3; the refractory module 3 includes a bottom plate 31 that can be welded to the inner wall of the sintering machine bellows, and a side plate 32 is vertically welded to the edge of the bottom plate 31, and a steel bar 35 is welded on the side of the bottom plate 31 away from the inner wall of the sintering machine bellows, and a steel mesh 34 is welded on the side of the steel bar 35 away from the bottom plate 31, and the space formed by the bottom plate 31 and the plurality of side plates 32 is filled and compacted with a refractory material 33.

[0029] Modular refractory modules 3 are assembled and applied to the inner wall of the sintering machine's bellows. Each refractory module 3 is individually fabricated, eliminating the large amount of rebound material generated by the overall spraying process, reducing refractory consumption and lowering material costs. The modular design allows for pre-production, ensuring complete curing and solidification of the refractory material, and enhancing wear resistance and high-temperature strength. The refractory modules 3 can be pre-fabricated and installed during sintering machine maintenance, significantly shortening the construction cycle and reducing sintering machine downtime. This improves sintering machine operating efficiency and increases sintered ore production. The easy installation facilitates maintenance during later production. The overall structure is simple, easy to implement, and highly practical.

[0030] Among them, when filling the refractory material 33, high-strength, wear-resistant, and high-temperature resistant refractory materials are used, and water is added and stirred to form a uniform mortar state; a cement scraper is used to evenly press it into the space formed by the bottom plate 31 and several side plates 32 (and pressed into the bottom of the wire mesh 34), ensuring strict compaction, and the surface is flush with the side plate 32 and smoothed to form a 25mm thick refractory material protective layer. It can be used after curing and maintaining for 24 hours.

[0031] The bottom plate 31 is made of 6mm thick steel plate, and the side plates 32 are made of 5mm thick and 25mm high steel plates, which effectively ensure the structural strength of the refractory module 3 and are easy to form and weld.

[0032] Among them, such as Figure 1-2 As shown, the refractory modules 3 are rectangular or trapezoidal in shape, and both are of equal height. Since each inner wall of the sintering machine bellows is an isosceles trapezoid that is wide at the top and narrow at the bottom, the rectangular refractory modules 3 in the middle and the trapezoidal refractory modules 3 on both sides can be easily assembled, thereby completely covering the inner wall of the sintering machine bellows, making assembly convenient.

[0033] The width of each refractory module 3 is 400-500 mm, and the length (i.e. Figure 1-2 The refractory module 3 is of moderate size and is easy to shape and manufacture and can be flexibly replaced.

[0034] Among them, the steel bars 35 are arranged in parallel and spaced apart, and are spot-welded to the bottom plate 31. The steel bars 35 serve as a skeleton, and are simply welded and fixed, making construction easy.

[0035] On the other hand, the steel bars 35 can also be arranged horizontally and vertically in a cross-spaced manner and fixed by spot welding, so that the strength of the skeleton structure is higher.

[0036] Furthermore, the spacing between adjacent steel bars 35 is 200-250mm, and the spacing between welding points is 200-250mm, which effectively ensures the strength of the skeleton structure and facilitates spot welding construction.

[0037] The mesh size of the steel mesh 34 is 30x88mm and the thickness is 2-3mm. The steel mesh 34 solidifies the refractory material 33 into a whole, ensuring its integrity, wear resistance and high temperature resistance.

[0038] In order to facilitate the assembly of the refractory modules 3, adjacent refractory modules 3 are fixed by welding, and adjacent side panels 32 are welded together.

[0039] Among them, each opening inner wall of the sintering machine bellows (such as Figure 5 The first opening wall 11 and the second opening wall 12 are covered and installed by a separate refractory module 3. The first opening wall 11 and the second opening wall 12 are covered and installed by a separate refractory module, which realizes the integrity of the exhaust port position, and the area is not large, which is easy to manufacture and shape, and convenient for maintenance and replacement.

[0040] The modular refractory structure of this sintering machine bellows utilizes modular refractory modules 3 assembled and applied to the inner wall of the sintering machine bellows. Each refractory module 3 is individually manufactured, avoiding the large amount of rebound material generated by the overall spraying construction, reducing refractory consumption and lowering material costs. The modular structural design allows for pre-production, ensuring complete curing and solidification of the refractory material, and improving wear resistance and high-temperature strength. The refractory modules 3 can be pre-processed and installed during sintering machine maintenance, significantly shortening the construction cycle and reducing sintering machine downtime. This helps improve sintering machine operating efficiency and increase sintered ore production. The easy installation facilitates repair and maintenance during later production processes. The overall structure is simple, easy to implement, and highly practical.

[0041] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0042] The terms "upper," "lower," "outer," "inner," and the like, if used in the specification and claims of the present invention and the accompanying drawings, are used to distinguish relative positions and do not necessarily define them. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0043] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular refractory structure for a sintering machine bellows, characterized in that: Each inner wall of the sintering machine bellows is covered with a plurality of assembled refractory modules (3); the refractory module (3) includes a bottom plate (31) that can be welded to the inner wall of the sintering machine bellows, a side plate (32) is welded to the edge of the bottom plate (31), a steel bar (35) is welded to the side of the bottom plate (31) away from the inner wall of the sintering machine bellows, a steel bar (35) is welded to the side of the steel bar (35) away from the bottom plate (31), and a steel mesh (34) is welded to the space formed by the bottom plate (31) and the plurality of side plates (32) is filled with refractory material (33).

2. The modular refractory structure of the sintering machine bellows according to claim 1 is characterized in that: The refractory module (3) is in the shape of a rectangle or a right-angled trapezoid.

3. The modular refractory structure of the sintering machine bellows according to claim 2, characterized in that: Each refractory module (3) has a width of 400-500 mm and a length of 500-600 mm.

4. The modular refractory structure of the sintering machine bellows according to claim 1, characterized in that: The steel bars (35) are arranged in parallel and spaced apart and are welded to the bottom plate (31) by spot welding.

5. The modular refractory structure of the sintering machine bellows according to claim 4, characterized in that: The spacing between adjacent steel bars (35) is 200-250 mm, and the spacing between welding points is 200-250 mm.

6. The modular refractory structure of the sintering machine bellows according to claim 1, characterized in that: The mesh size of the wire mesh (34) is 30x88mm and the thickness is 2-3mm.

7. The modular refractory structure of the sintering machine bellows according to claim 1, characterized in that: Adjacent refractory modules (3) are fixed by welding.

8. The modular refractory structure of the sintering machine bellows according to claim 1, characterized in that: Each opening inner wall of the sintering machine wind box is covered and installed by a separate refractory module (3).

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