Refractory lining body of tower type centralized aluminum melting furnace

Abstract

The utility model relates to the field of smelting furnaces, in particular to a refractory lining body of a tower type centralized aluminum smelting furnace. The utility model provides a fire-resistant lining body of a tower type centralized aluminum melting furnace. The fire-resistant lining body comprises a molten pool, a burner wall and a lintel, a plurality of burner placing holes are formed in the burner wall; the straight cylinder structure of a traditional melting chamber is changed through the lintel, on one hand, aluminum alloy blocks can be received during feeding, the situation that aluminum alloy directly hits a molten pool to damage a working layer is avoided, on the other hand, materials can be stacked during feeding, an aluminum alloy melting transition zone is formed, the heat energy utilization rate is increased, and erosion damage of molten and splashed aluminum liquid to a burner is reduced; the lintel can be quickly replaced and quickly restarted for production, so that the problem of long-time shutdown maintenance is solved; the molten pool is poured in different bins, on one hand, the problem of irregular cracking of a refractory material in the baking and using process of integral pouring is solved, on the other hand, permeation of molten aluminum to the refractory material can be effectively resisted by adopting a trapezoidal structural seam, and the application performance of the material is improved.

Description

Technical Field

[0001] The utility model relates to the field of melting furnaces, in particular to a refractory lining of a tower type centralized aluminum melting furnace. Background Art

[0002] With the continuous development and progress of automobile lightweight industrial technology, aluminum and aluminum alloy products are increasingly used in the automobile industry. Tower type centralized melting furnace is a special equipment for centralized melting of aluminum alloys. It is widely used in the production of large quantities of castings due to its long service life, high degree of automation, fast aluminum output, low aluminum liquid burning loss rate, and reduced emission of harmful pollutants.

[0003] In traditional tower-type centralized furnaces, aluminum alloy materials are fed into the melting chamber through a feeding tower, and are preheated and melted in advance in the preheating zone by the heat discharged from the insulation chamber and the melting chamber. The molten aluminum flows into the insulation chamber for insulation and slagging, quenching and tempering are performed in the insulation chamber. Due to the small space, the refractory lining of the tower-type centralized furnace is mostly constructed by integral casting. When the local refractory lining is damaged, the furnace needs to be stopped for maintenance, which seriously affects production efficiency. At the same time, in order to further improve the melting efficiency of aluminum liquid and reduce energy loss, the new tower-type centralized furnace will complete the melting and slagging of aluminum alloy in the melting chamber. The change in working conditions puts higher requirements on the refractory lining of the melting chamber.

[0004] Therefore, there is an urgent need for a refractory lining that is easy to maintain and does not require overall replacement. Utility Model Content

[0005] The utility model aims to provide a refractory lining for a tower type centralized aluminum melting furnace in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] Provided is a refractory lining of a tower type centralized aluminum melting furnace, comprising: a molten pool, a burner wall detachably connected to the molten pool, and a lintel detachably connected to the burner wall;

[0008] The molten pool includes: a bottom plate, a first side wall, a second side wall, a third side wall and a fourth side wall; the bottom ends of the inner walls of the first side wall, the second side wall, the third side wall and the fourth side wall are respectively detachably connected to the side walls of the bottom plate, and the first side wall, the second side wall, the third side wall and the fourth side wall are sequentially arranged to form a cavity; a furnace door is opened in the middle of the third side wall;

[0009] One side of the burner wall is detachably connected to the top of the inner wall of the third side wall; a plurality of burner placement holes are provided on the burner wall; and the other side of the burner wall is detachably connected to one side of the lintel.

[0010] Preferably, a plurality of first trapezoidal grooves are provided on the side walls of the bottom plate, and the bottom ends of the inner walls of the first side wall, the second side wall, the third side wall and the fourth side wall are provided with first trapezoidal protrusions matching the trapezoidal grooves; the first side wall, the second side wall, the third side wall and the fourth side wall are respectively connected to the bottom plate by a detachable connection through the cooperation of the first trapezoidal protrusions and the first trapezoidal grooves.

[0011] More preferably, the bottom plate includes: a first plate body and a second plate body detachably connected to the first plate body; a first angle is defined between the first plate body and the second plate body, and the first angle is an obtuse angle.

[0012] More preferably, the third side wall includes: a threshold, a plurality of columns and a lintel; the inner wall of the threshold is detachably connected to an end of the second plate body away from the first plate body; the bottom ends of a plurality of the columns are respectively connected to the top end of the threshold, and the top ends of a plurality of the columns are respectively connected to the bottom end of the lintel; the threshold, a plurality of the columns and the lintel are arranged to form the furnace door; the inner wall of the lintel is detachably connected to one side of the burner wall.

[0013] More preferably, a second trapezoidal groove is provided on the inner wall of the door lintel, a second trapezoidal block is provided on one side of the burner wall, and the door lintel is detachably connected to the burner wall through the cooperation between the second trapezoidal groove and the second trapezoidal block.

[0014] Preferably, a third trapezoidal groove is provided on the other side of the burner wall, and a third trapezoidal block is provided on one side of the lintel. The burner wall is detachably connected to the lintel through the cooperation between the third trapezoidal groove and the third trapezoidal block.

[0015] Preferably, it also includes: a thermal insulation layer;

[0016] The inner wall of the thermal insulation layer is in contact with the bottom of the molten pool.

[0017] More preferably, the thermal insulation layer comprises: an aluminum silicate fiberboard and a nano-microporous thermal insulation board.

[0018] Preferably, the first side wall, the second side wall, the third side wall and the top end of the lintel are detachably connected with a feeding tower.

[0019] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0020] (1) The setting of the lintel changes the straight tube structure of the traditional melting chamber. On the one hand, it can receive the aluminum alloy block when feeding, avoiding the aluminum alloy from directly hitting the molten pool and damaging the working layer. On the other hand, it can pile up the materials when feeding, forming a transition zone for the melting of the aluminum alloy, improving the utilization rate of heat energy and reducing the erosion and damage of the burner by the molten and splashing aluminum liquid;

[0021] (2) The lintel is a vulnerable part and is made of prefabricated parts. When the lintel needs to be replaced due to damage, it can be quickly replaced and the furnace can be put into production quickly, solving the problem of long-term shutdown and maintenance.

[0022] (3) The molten pool is poured in separate compartments, and the components are spliced ​​with trapezoidal structural seams. On the one hand, this solves the problem of irregular cracking of refractory materials during baking and use during the overall pouring process. On the other hand, the use of trapezoidal structural seams can effectively resist the penetration of aluminum liquid into refractory materials and improve the application performance of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional cross-sectional view of the refractory lining of a tower-type centralized aluminum melting furnace in one embodiment of the utility model;

[0024] Figure 2 It is a planar cross-sectional view of a refractory lining of a tower-type centralized aluminum melting furnace in one embodiment of the utility model;

[0025] Reference numerals in the figures include:

[0026] Molten pool 1; bottom plate 11; first plate body 111; second plate body 112; first side wall 12; third side wall 13; threshold 131; column 132; lintel 133; burner wall 2; lintel 3; insulation layer 4; feeding tower 5. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] Example

[0031] This embodiment provides a refractory lining of a tower type centralized aluminum melting furnace, comprising: a molten pool 1, a burner wall 2 detachably connected to the molten pool 1, a lintel 3 detachably connected to the burner wall 2, and an insulation layer 4;

[0032] The molten pool 1 comprises: a bottom plate 11, a first side wall 12, a second side wall, a third side wall 13 and a fourth side wall; a plurality of first trapezoidal grooves are provided on the side wall of the bottom plate 11, and the first side wall 12, the second side wall, the third side wall 13 and the fourth side wall are provided with first trapezoidal protrusions matching the trapezoidal grooves at the bottom ends of the inner walls; the first side wall 12, the second side wall, the third side wall 13 and the fourth side wall are respectively detachably connected to the bottom plate 11 through the cooperation of the first trapezoidal protrusions and the first trapezoidal grooves, and the first side wall 12, the second side wall, the third side wall 13 and the fourth side wall are sequentially surrounded to form a cavity;

[0033] The bottom plate 11 includes: a first plate body 111 and a second plate body 112 detachably connected to the first plate body 111; a first angle is formed between the first plate body 111 and the second plate body 112, and the first angle is an obtuse angle;

[0034] The third side wall 13 includes: a threshold 131, a plurality of columns 132 and a door lintel 133; the inner wall of the threshold 131 is detachably connected to the end of the second plate 112 away from the first plate 111; the bottom ends of the plurality of columns 132 are respectively connected to the top of the threshold 131, and the top ends of the plurality of columns 132 are respectively connected to the bottom ends of the door lintel 133; the threshold 131, the plurality of columns 132 and the door lintel 133 are arranged to form a furnace door; the inner wall of the door lintel 133 is provided with a second trapezoidal groove, and a second trapezoidal block is provided on one side of the burner wall 2, and the door lintel 133 is detachably connected to the burner wall 2 through the cooperation of the second trapezoidal groove and the second trapezoidal block;

[0035] A third trapezoidal groove is provided on the other side of the burner wall 2, and a third trapezoidal block is provided on one side of the lintel 3. The burner wall 2 is detachably connected to the lintel 3 through the cooperation of the third trapezoidal groove and the third trapezoidal block; a plurality of burner placement holes are provided on the burner wall 2; the other side of the burner wall 2 is detachably connected to one side of the lintel 3;

[0036] The inner wall of the thermal insulation layer 4 is in contact with the bottom of the molten pool 1 , and the thermal insulation layer 4 includes: an aluminum silicate fiber board and a nano-microporous thermal insulation board.

[0037] The first side wall 12 , the second side wall, the third side wall and the top end of the lintel 3 are detachably connected with a feeding tower 5 .

[0038] As a preferred embodiment, the first plate body 111, the first side wall 12, the second side wall and the fourth side wall are formed by construction of amorphous castables or shaped bricks with non-stick aluminum properties; the second plate body 112 is cast by casting the amorphous castable.

[0039] As a preferred embodiment, the threshold 131 and the column 132 are cast by non-stick aluminum casting material added with stainless steel fiber; the door lintel 133 is cast by high-temperature resistant and high-strength cement casting material.

[0040] As a preferred embodiment, the lintel 3 is cast by adding a proper amount of stainless steel fiber to a high-strength non-stick aluminum casting material with erosion resistance to aluminum liquid, and is made by baking at 500°C-750°C.

[0041] To sum up, the setting of the lintel of the utility model changes the straight-cylinder structure of the traditional melting chamber. On the one hand, it can receive aluminum alloy blocks when feeding, avoiding the aluminum alloy from directly hitting the molten pool and damaging the working layer. On the other hand, it can pile up materials when feeding to form a transition zone for melting aluminum alloy, thereby improving the utilization rate of thermal energy and reducing the erosion and damage of the burner by the molten and splashing aluminum liquid. The lintel, as a vulnerable part, is made of prefabricated moldings. When the lintel needs to be replaced due to damage, it can be quickly replaced and the furnace can be quickly put into production, thus solving the problem of long-term shutdown and maintenance. The molten pool is cast in separate compartments, and the components are spliced ​​with trapezoidal structural seams. On the one hand, it solves the problem of irregular cracking of refractory materials during baking and use of the overall casting. On the other hand, the use of trapezoidal structural seams can effectively resist the penetration of aluminum liquid into refractory materials and improve the application performance of the materials.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A refractory lining for a tower type centralized aluminum melting furnace, characterized in that: include: A molten pool (1), a burner wall (2) detachably connected to the molten pool (1), and a lintel (3) detachably connected to the burner wall (2); The molten pool (1) comprises: a bottom plate (11), a first side wall (12), a second side wall, a third side wall (13) and a fourth side wall; the bottom ends of the inner walls of the first side wall (12), the second side wall, the third side wall (13) and the fourth side wall are respectively detachably connected to the side walls of the bottom plate (11), and the first side wall (12), the second side wall, the third side wall (13) and the fourth side wall are sequentially arranged to form a cavity; a furnace door is provided in the middle of the third side wall (13); One side of the burner wall (2) is detachably connected to the top of the inner wall of the third side wall (13); a plurality of burner placement holes are provided on the burner wall (2); and the other side of the burner wall (2) is detachably connected to one side of the lintel (3).

2. The refractory lining according to claim 1, characterized in that: A plurality of first trapezoidal grooves are provided on the side wall of the bottom plate (11); the first side wall (12), the second side wall, the third side wall (13) and the fourth side wall are provided with first trapezoidal protrusions matching the trapezoidal grooves at the bottom ends of the inner walls; the first side wall (12), the second side wall, the third side wall (13) and the fourth side wall are respectively connected to the bottom plate (11) in a detachable manner by the cooperation between the first trapezoidal protrusions and the first trapezoidal grooves.

3. The refractory lining according to claim 2, characterized in that: The bottom plate (11) comprises: a first plate body (111) and a second plate body (112) detachably connected to the first plate body (111); a first angle is formed between the first plate body (111) and the second plate body (112), and the first angle is an obtuse angle.

4. The refractory lining according to claim 3, characterized in that: The third side wall (13) comprises: a threshold (131), a plurality of columns (132) and a door lintel (133); the inner wall of the threshold (131) is detachably connected to an end of the second plate body (112) away from the first plate body (111); the bottom ends of a plurality of columns (132) are respectively connected to the top end of the threshold (131), and the top ends of a plurality of columns (132) are respectively connected to the bottom end of the door lintel (133); the threshold (131), a plurality of columns (132) and the door lintel (133) are arranged to form the furnace door; the inner wall of the door lintel (133) is detachably connected to one side of the burner wall (2).

5. The refractory lining according to claim 4, characterized in that The inner wall of the door lintel (133) is provided with a second trapezoidal groove, and one side of the burner wall (2) is provided with a second trapezoidal block. The door lintel (133) is detachably connected to the burner wall (2) through the cooperation between the second trapezoidal groove and the second trapezoidal block.

6. The refractory lining according to claim 1, characterized in that A third trapezoidal groove is provided on the other side of the burner wall (2), and a third trapezoidal block is provided on one side of the lintel (3). The burner wall (2) is detachably connected to the lintel (3) through the cooperation between the third trapezoidal groove and the third trapezoidal block.

7. The refractory lining according to claim 1, characterized in that: Also includes: Insulation layer (4); The inner wall of the thermal insulation layer (4) is in contact with the bottom end of the molten pool (1).

8. The refractory lining according to claim 7, characterized in that The thermal insulation layer (4) comprises: an aluminum silicate fiber board and a nano-microporous thermal insulation board.

9. The refractory lining according to claim 1, characterized in that: The first side wall (12), the second side wall, the third side wall and the top end of the lintel (3) are detachably connected to a feeding tower (5).

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