CN111964439A

CN111964439A - Gas engine side furnace hearth structure with lintel

Info

Publication number: CN111964439A
Application number: CN202010895422.5A
Authority: CN
Inventors: 皮大成; 张晓峰
Original assignee: Juding Thermal Energy Technology Suzhou Co ltd
Current assignee: Juding Thermal Energy Technology Suzhou Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-20

Abstract

The invention discloses a gas engine side furnace hearth structure with a lintel, which comprises a melting chamber and a holding chamber which are communicated with each other, wherein a melting chamber molten pool is formed in the melting chamber, and a holding chamber molten pool is formed in the holding chamber, and the gas engine side furnace hearth structure is characterized in that: the holding chamber molten pool is communicated with the melting chamber molten pool, and a first slag blocking lintel is arranged on a passageway at the top of the holding chamber molten pool, which is adjacent to the melting chamber molten pool; the bottom of the melting chamber melting pool is inclined relative to the bottom of the holding chamber melting pool, and a slag stopping step is formed on the inclined melting chamber melting pool in an upward protruding mode. The aluminum material platform is arranged in the melting chamber, so that the aluminum material is prevented from directly falling into the aluminum liquid, and the top of a passageway from the melting chamber to the holding chamber is lower than the aluminum liquid level, so that the aluminum slag floating on the surface is prevented from entering the holding chamber from the melting chamber; the bottom of the passageway is provided with a slag blocking step to prevent aluminum slag sinking at the bottom from entering the holding chamber from the melting chamber, thereby improving the purity of the primary molten aluminum.

Description

Gas engine side furnace hearth structure with lintel

Technical Field

The invention relates to the technical field of aluminum alloy smelting, in particular to a gas engine side furnace hearth structure with a lintel.

Background

In order to achieve the purpose, pure aluminum needs to be changed into the aluminum alloy, the pure aluminum needs to be melted to be changed into liquid aluminum, and then other chemical elements are added into the aluminum alloy to enable atoms of the aluminum alloy to be recombined to form a new atomic space structure, so that the interaction force among chemical bonds of the aluminum alloy is stronger and more stable.

Pure aluminium can inevitable formation aluminium sediment when melting, and traditional aluminum alloy smelting furnace can all set up corresponding scarfing cinder mouth in each molten bath of smelting furnace in order to obtain the higher aluminium water of purity, and the aluminium water flows into each molten bath when processing, through the operation of slagging-off to every molten bath inside, realizes the purification to the aluminium water. However, the method can increase the labor force of workers, the workers need to perform slag pulling operation on the aluminum slag formed in each molten pool at irregular intervals, the maintenance cost of the smelting furnace can be finally increased, and certain burden is brought to enterprises.

Disclosure of Invention

The invention aims to solve the technical problems, and provides a gas engine side furnace hearth structure with a lintel, which effectively reduces the possibility of aluminum slag entering a holding chamber from a melting chamber, concentrates slag-pulling work in each batch in the melting chamber, reduces slag-pulling frequency of the holding chamber and reduces maintenance cost of a furnace.

In order to achieve the purpose, the invention adopts the following technical scheme:

a gas engine side furnace hearth structure with a lintel comprises a melting chamber and a holding chamber which are communicated with each other, wherein a melting chamber molten pool is formed inside the melting chamber, a holding chamber molten pool is formed inside the holding chamber, the holding chamber molten pool is communicated with the melting chamber molten pool, and a first slag blocking lintel is installed on a passageway at the top of the holding chamber molten pool, which is adjacent to the melting chamber molten pool; the bottom of the melting chamber melting pool is inclined relative to the bottom of the holding chamber melting pool, and a slag stopping step is formed on the inclined melting chamber melting pool in an upward protruding mode.

Preferably, both sides of the bottom of the first slag-stopping lintel are provided with chamfer structures.

Preferably, the output end of the holding chamber is communicated with a soup outlet molten pool, and a second slag stopping lintel is connected to the passageways of the soup outlet molten pool and the holding chamber molten pool.

Preferably, the holding chamber and the melting chamber are respectively hinged with a holding chamber slag cleaning door and a melting chamber slag cleaning door for removing scum.

Preferably, the side surface of the melting chamber is connected with a preheating hearth which is in a tapered structure with a wide upper part and a narrow lower part, and the top of the preheating hearth is provided with a feeding port.

Preferably, an aluminum material platform for buffering and receiving an aluminum piece is formed in the melting chamber along the feeding direction of the melting bath of the melting chamber, and the top of the aluminum material platform is communicated with the bottom of the preheating hearth.

Preferably, the aluminum material platform is arranged in the melting chamber in an inclined manner, and the gas flame sprayed by the burner penetrates through the aluminum material platform and enters the melting chamber.

The invention has the beneficial effects that:

(1) the aluminum liquid melting pool extends from the holding chamber to the melting chamber, the first slag-blocking lintel is arranged on a passage at the top of the melting pool of the holding chamber, which is adjacent to the melting pool of the melting chamber, and the top of the passage from the melting chamber to the holding chamber is lower than the aluminum liquid level, so that the aluminum slag floating on the surface is prevented from entering the holding chamber from the melting chamber, and the slag-blocking step is arranged at the bottom of the melting chamber, so that the aluminum slag sinking at the bottom is prevented from entering the holding chamber from the melting chamber, and the purity of the primary molten aluminum is obviously improved.

(2) Through the combined action of the first slag-stopping lintel and the slag-stopping steps, the possibility that aluminum slag enters the holding chamber from the melting chamber is effectively reduced, so that slag removal work of each shift is concentrated in the melting chamber, slag removal frequency of the holding chamber can be reduced, labor force of workers is reduced, and maintenance cost of the furnace is reduced.

(3) The invention forms an aluminum material platform for buffering and receiving aluminum pieces in the melting chamber along the feeding direction of the melting bath of the melting chamber, the aluminum material platform is arranged in the melting chamber in an inclined way, most of aluminum ingots fed from a feeding port can be accumulated on the inclined aluminum material platform, the aluminum materials are ensured to be always positioned outside the aluminum liquid, and the installation position of the combustion machine is adjusted, so that the gas flame sprayed by the combustion machine penetrates through the aluminum material platform and enters the melting chamber, most of the aluminum ingot is accumulated on the aluminum material platform, the gas flame is fully utilized to heat the aluminum ingot, the heat transfer path is 'flame-aluminum ingot', the heat conductivity is the heat conductivity of the aluminum material (210-.

Drawings

FIG. 1 is a schematic structural diagram of a gas engine side furnace hearth structure with a lintel according to the present invention;

FIG. 2 is a perspective cross-sectional view of a melting chamber in a hearth structure of a gas burner side furnace with a lintel according to the present invention;

FIG. 3 is a three-dimensional sectional view of a gas engine side furnace hearth structure with a lintel according to the present invention;

FIG. 4 is a sectional plan view of a gas engine side furnace hearth structure with a lintel according to the present invention;

FIG. 5 is a schematic sectional plan view of a dissolution chamber in a hearth structure of a gas fired machine side furnace with a lintel according to the present invention.

In the figure: 1. a melting chamber; 2. preheating a hearth; 3. a feeding port; 4. a slag removal door of the melting chamber; 5. a holding chamber; 6. a holding chamber slag removal door; 7. a molten pool at a soup taking port; 8. taking a soup mouth; 9. a first slag bridge; 10. an aluminum material platform; 11. gas flame spraying; 12. a melting chamber; 13. a holding chamber molten bath; 14. a chamfering structure; 15. a slag stopping step; 16. second slag stopping lintel; 17. and (3) aluminum material.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the invention type, and are not to be construed as limiting the invention type.

In the description of the invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the invention can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-5, a hearth structure of a gas-fired machine edge-fired furnace with a lintel comprises a melting chamber 1, a preheating hearth 2 and a holding chamber 5 which are communicated with each other, wherein a melting chamber molten bath 12 for melting aluminum is formed inside the melting chamber 1, a holding chamber molten bath 13 is formed inside the holding chamber 5, the preheating hearth 2 is of a tapered structure with a wide top and a narrow bottom, a feed opening 3 is formed at the top of the preheating hearth 2, an aluminum ingot flows into the melting chamber molten bath 12 after being heated and melted in the preheating hearth 2 through the feed opening 3, the holding chamber molten bath 13 is communicated with the melting chamber molten bath 12, scum is generated inside the pure aluminum melting chamber molten bath 12, and in order to avoid the scum from entering the holding chamber molten bath 13, a first slag blocking lintel 9 is installed on a passage at the top of the holding chamber molten bath 13 and adjacent to the melting chamber molten bath 12, and the first slag blocking lintel 9 can be welded with the melting chamber 1, The holding chamber 5 is welded and integrally formed, and the top of a passageway from the melting chamber 1 to the holding chamber 5 is lower than the aluminum liquid level through the first slag-blocking lintel 9, so that aluminum slag floating on the surface is prevented from entering the holding chamber 5 from the melting chamber 1. The bottom of the melting chamber molten pool 12 is inclined relative to the bottom of the holding chamber molten pool 13, so that the aluminum solution in the melting chamber molten pool 12 can conveniently flow into the holding chamber molten pool 13, and filter residues are also generated in the aluminum solution and sink to the bottom of the melting chamber molten pool 12, therefore, the slag stopping step 15 is formed at the bottom of the inclined melting chamber molten pool 12 in an upward protruding mode, the slag stopping step 15 is arranged at the connecting position of the holding chamber molten pool 13 and the melting chamber molten pool 12, and the shape of the slag stopping step 15 is not limited in the embodiment as long as the slag stopping step can prevent the aluminum residues sinking to the bottom from entering the holding chamber molten pool 13 from the melting chamber molten pool 12.

As a preferred embodiment, in the invention, both sides of the bottom of the first slag-stopping lintel 9 are provided with the chamfer structures 14, the chamfer structures 14 can be both fillet or chamfer angles, and the chamfer structures 14 can guide the flow of the aluminum industry, prevent the aluminum liquid from scouring the first slag-stopping lintel 9, slow down the abrasion of the first slag-stopping lintel, increase the circulation volume of the aluminum liquid in the melting chamber molten pool 12 and the holding chamber molten pool 13, and reduce the influence on the forward flow of the aluminum liquid.

In the hearth structure in the embodiment, the output end of the holding chamber 5 is also communicated with a soup-taking port molten pool 7, the passageways of the soup-taking port molten pool 7 and the holding chamber molten pool 13 are connected with a second slag blocking lintel 16, and the second slag blocking lintel 16 and the first slag blocking lintel 9 adopt the same structure and installation mode, so that scum in the holding chamber molten pool 13 can be prevented from entering the soup-taking port molten pool 7, and the purity of aluminum liquid is ensured.

Because aluminium liquid can not all produce the dross unavoidably in keeping room 5 or melting chamber 1, consequently just need the workman regularly or not to schedule to clear up the dross that produces, prevent that the dross from remaining and causing the damage on the furnace wall, it has keeping room slag-cleaning door 5 and melting chamber slag-cleaning door 4 that are used for cleaing away the dross to articulate respectively on keeping room 5 and melting chamber 1 in this embodiment, the installation mode and the structure of keeping room slag-cleaning door 5 and melting chamber slag-cleaning door 4 adopt current prior art can, because it is the key point that the technical scheme that this application protected will consider, consequently, no longer describe repeatedly.

In addition, in the traditional hearth structure, the preheating hearth 2 is directly and obliquely communicated with the melting chamber 1, when pure aluminum is melted, an aluminum ingot is directly put into the preheating hearth 2, flame sprayed by a burner heats and melts the aluminum ingot in the preheating hearth 2, then the aluminum ingot is melted and enters the melting chamber 1, but in actual production, due to the installation structure of the preheating hearth 2, the aluminum ingot cannot be completely heated and melted, some aluminum ingots directly fall into the melting chamber 1 to be melted by high-temperature liquid aluminum liquid, the aluminum material is soaked in the liquid aluminum water after being put into the melting chamber, the heat transfer path is changed into flame-aluminum liquid-aluminum ingot, the heat conductivity of the aluminum liquid is obviously lower than that of the aluminum ingot and is only 90-100W/m.K, when the solution depth is greater than a certain value, the aluminum material below the depth cannot be melted under the rated heating power of the furnace, the invention causes the hearth to be blocked and damaged, if melting is needed, the melting power needs to be increased, the hearth is overloaded thermally, and the service life is shortened, therefore, the invention forms an aluminum material platform 10 for buffering and receiving an aluminum piece in the melting chamber 1 along the feeding direction of the melting chamber 12, the top of the aluminum material platform 10 is communicated with the bottom of the preheating hearth 2, furthermore, the aluminum material platform 10 is arranged in the melting chamber 1 in an inclined way, most of the aluminum ingot fed from the feeding port 3 can be accumulated on the inclined aluminum material platform 10, and the invention adjusts the installation position of the burner, so that the gas flame 11 sprayed out penetrates through the aluminum material platform 10 to enter the melting chamber 1, most of the aluminum ingot is accumulated on the aluminum material platform 10, the aluminum ingot is heated by fully utilizing the gas flame 11, the heat transfer path is 'flame-aluminum ingot', namely, the heat conductivity of the aluminum material per se is 210W/m.K-, ensures the high-efficiency transmission of heat, quickly melts the aluminum ingot and solves the problem that the aluminum material is sunk at the bottom of the melt with certain depth and can not be melted.

The invention discloses a gas engine side furnace hearth structure with a lintel, when in use, an aluminum raw material is selected and the surface of the aluminum raw material is physically cleaned, then the prepared aluminum raw material is put into a preheating hearth 2 from a feeding port 3, the aluminum raw material is accumulated on an aluminum material platform 10 along the preheating hearth 2, then the aluminum raw material is heated within the range of 660 ℃ to 700 ℃ by gas flame jet 11 ejected by a burner, the aluminum raw material is completely melted, the obtained aluminum liquid enters a melting chamber 12, aluminum slag is generated in the heating and melting process of the aluminum liquid, scum floating on the surface of the aluminum liquid is blocked by a first slag blocking lintel 9, the scum is reduced to flow into a holding chamber 13, sediment sinking at the bottom of the aluminum liquid is blocked by a slag blocking step 15, the sediment is prevented from flowing into the holding chamber 13, most of the aluminum slag formed in the aluminum liquid is blocked in the melting chamber 1, workers pull out slag maintenance on the aluminum slag in the melting chamber 1 every shift, the maintenance of slag removal can be carried out in the holding chamber 5 every 3-5 days, when slag is removed, a slag removing door in the corresponding chamber is opened, aluminum slag on the inner wall of the chamber is removed by adopting the prior art, and when an aluminum water solution is used, the aluminum water solution is directly contained from a soup taking port 8 in a soup taking port molten pool 7.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a gas engine side furnace hearth structure with lintel, includes melting chamber (1) and holding chamber (5) that intercommunication set up each other, melting chamber molten bath (12) are formed to the inside of melting chamber (1), holding chamber (5) are inside to be formed with holding chamber molten bath (13), its characterized in that: the holding chamber molten pool (13) is communicated with the melting chamber molten pool (12), and a first slag blocking lintel (9) is arranged on a passageway at the top of the holding chamber molten pool (13) adjacent to the melting chamber molten pool (12); the bottom of the melting chamber melting pool (12) is inclined relative to the bottom of the holding chamber melting pool (13), and a slag stopping step (15) is formed on the inclined melting chamber melting pool (12) in an upward protruding mode.

2. The gas engine side furnace hearth structure with the lintel according to claim 1, wherein chamfer structures (14) are arranged on both sides of the bottom of the first slag-stopping lintel (9).

3. A gas engine side furnace hearth structure with lintel according to claim 1, characterized in that an output end of the holding chamber (5) is communicated with a soup outlet molten pool (7), and a second slag stopping lintel (16) is connected on a passage of the soup outlet molten pool (7) and the holding chamber molten pool (13).

4. A gas engine side furnace hearth structure with lintel according to claim 1, characterized in that a holding chamber slag door (5) and a melting chamber slag door (4) for removing dross are hinged on the holding chamber (5) and the melting chamber (1), respectively.

5. A gas engine side furnace hearth structure with a lintel according to claim 1, characterized in that a preheating hearth (2) with a structure of a taper shape with a wide top and a narrow bottom is connected to the side of the melting chamber (1), and the top of the preheating hearth (2) is provided with a feeding port (3).

6. The gas-fired machine side furnace hearth structure with the lintel according to claim 5, wherein an aluminum material platform (10) for buffering and receiving aluminum pieces is formed in the melting chamber (1) along the feeding direction of a melting chamber melting bath (12), and the top of the aluminum material platform (10) is communicated with the bottom of the preheating hearth (2).

7. A gas engine side furnace hearth structure with lintel according to claim 6, characterized in that the aluminum material platform (10) is arranged in an inclined manner in the melting chamber (1), and the gas flame (11) from the burner penetrates the aluminum material platform (10) into the melting chamber (1).