Aluminum ingot melting furnace

Abstract

The invention relates to the technical field of melting furnaces, in particular to an aluminum ingot melting furnace which comprises a furnace body, a buffering system and a conveying system. The furnace body comprises a plurality of rows of flame nozzles uniformly arranged on the inner wall of the furnace body, and a feeding nozzle arranged at the bottom of the inner wall of the furnace body; the flame nozzle faces the center of the furnace body; the feeding nozzle faces the center of the bottom of the inner wall of the furnace body; the buffer system comprises a gas cylinder, a storage hopper and a feeding pipe, and the gas cylinder is communicated with the flame nozzles; one end of the feeding pipe is communicated with the feeding nozzle, the other end of the feeding pipe is communicated with the gas cylinder, and the storage hopper is located above the feeding pipe and communicated with the feeding pipe; the aluminum particles in the storage hopper form a buffer pile below the falling aluminum ingots for buffering; the buffering system is arranged to be matched with the conveying system, aluminum ingots can be blown to the position close to the axis of the furnace body by airflow under the action of gas in combination with the flame nozzle, a buffering pile can be formed under the falling aluminum ingots in combination with discharged aluminum particles, the aluminum ingots are buffered, and the furnace body is prevented from being smashed.

Description

Technical Field

[0001] The present invention relates to the technical field of melting furnaces, and particularly relates to an aluminum ingot melting furnace. Background Art

[0002] Aluminum is the basic material for alloys such as silicon-aluminum-carbon alloy, silicon-zirconium-aluminum alloy, high-silicon aluminum alloy, and silicon-aluminum-titanium alloy. The preparation of various alloys mostly adopts the mechanical stirring method, that is, during the stirring process, reinforcing particles are added to the matrix metal liquid (aluminum metal liquid / aluminum water), and a high-speed rotating stirring device is used to uniformly mix the reinforcing body into the matrix metal liquid, and then poured into a mold to obtain the desired casting; during the production process, aluminum ingots need to be melted to obtain aluminum metal liquid. Existing melting devices directly heat the aluminum ingots until they melt. In order to achieve high-efficiency smelting, the volume of the existing melting furnace is very large, making the depth of the melting furnace very deep. The traditional feeding process is to manually lift it to the furnace mouth and send it into the furnace from the back of the furnace mouth. The work intensity is high. Each aluminum ingot ranges from 10 kg to 20 kg. When the aluminum ingot free-falls from the melting furnace to the bottom of the melting furnace, due to gravitational potential energy, it will impact the bottom of the melting furnace, or may rebound and hit the furnace wall after a collision, which may damage the melting furnace and then cause the equipment to stop working. Therefore, an aluminum ingot melting furnace that can prevent the aluminum ingot from being damaged is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide an aluminum ingot melting furnace that can prevent the aluminum ingot from being damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: An aluminum ingot melting furnace, comprising a furnace body, a buffer system, and a conveying system; The furnace body includes an opening at the top, multiple rows of flame nozzles uniformly arranged on the inner wall of the furnace body, and a feeding nozzle arranged at the bottom of the inner wall of the furnace body; each row of the flame nozzles includes a plurality of uniformly distributed air nozzles, and the air outlet direction of the air nozzles faces the center of the furnace body; the feeding nozzle faces the center of the bottom of the inner wall of the furnace body; The buffer system includes a gas cylinder, a storage hopper, a feeding pipe, a first valve, a second valve, and a heat insulation valve. The gas cylinder is connected to multiple flame nozzles through the first valve; one end of the feeding pipe is connected to the feeding nozzle through the heat insulation valve, and the other end is connected to the gas cylinder through the second valve. The feeding pipe is horizontally placed, and the storage hopper is located above the feeding pipe and is connected to the feeding pipe; aluminum particles stored in the storage hopper enter the feeding pipe under the action of gravity; The conveying system includes a conveyor for conveying aluminum ingots. The conveyor includes an output end which is located above the opening, and the conveyor runs at a constant speed. When the first aluminum ingot drops through the conveyor from the opening, the first valve, the second valve and the heat insulation valve are opened. The opening of the first valve enables the air flow generated by multiple flame nozzles to concentrate the travel of the aluminum ingot during its fall near the axis of the furnace body. The opening of the second valve enables the aluminum particles in the storage hopper to be discharged through the air flow from the feeding pipe and the feeding nozzle to form a buffer pile under the falling first aluminum ingot for buffering, and then the second valve and the heat insulation valve are closed. When subsequent aluminum ingots drop through the conveyor from the opening, the first valve remains open so that the dropped aluminum ingots hit other aluminum ingots already in the furnace body for buffering.

[0005] Preferably, the aluminum ingot melting furnace further includes a melting pool. The bottom of the inner wall of the furnace body is inclined downward and communicates with the melting pool, and the side communicating with the melting pool is the lower side.

[0006] Preferably, the aluminum particles are one or more of cuboid particles or cube particles; When the aluminum particles are cuboid particles, the longest side length of the aluminum particles does not exceed 8 mm, and the shortest side length is not less than 3 mm; When the aluminum particles are cube particles, the side length range of the aluminum particles is 3 mm - 8 mm.

[0007] Preferably, the feeding nozzle is arranged towards the center of the bottom of the inner wall of the furnace body and close to the side of the melting pool.

[0008] Preferably, the aluminum ingot melting furnace further includes a gas system. The gas system includes a gas pipe and a third valve, and the gas pipe communicates with the flame nozzle through the third valve.

[0009] Preferably, the aluminum ingot melting furnace is ignited by a laser igniter during ignition.

[0010] Preferably, the first valve and multiple flame nozzles are communicated through a mixing pipe, and a heater is arranged in the mixing pipe.

[0011] Preferably, the furnace body further includes a cover body and a circulation fan. The cover body is provided with a circulation port and a feeding port for the conveyor to convey materials. The circulation port, the circulation fan, the mixing pipe and the flame nozzle are communicated in sequence.

[0012] Preferably, the storage hopper is provided with a sealing cover, and the sealing cover is transparent.

[0013] Preferably, the buffer system further includes an air compressor, and the air compressor is communicated with a gas cylinder.

[0014] The beneficial effects of the present invention are as follows: By setting up a buffer system in cooperation with a conveying system and combining with a flame nozzle, it is possible to use the existing structure as a gas nozzle when not burning. When the first valve is opened, the falling of the aluminum ingot can be blown by the airflow towards the vicinity of the axis of the furnace body under the action of the gas. Combining with the feeding nozzle facing the center of the bottom of the inner wall of the furnace body, the discharged aluminum particles can form a buffer pile under the first falling aluminum ingot to buffer the aluminum ingot and prevent damage to the furnace body. Moreover, the material of aluminum is relatively soft, which can well absorb the impact and will not cause other impurities. And only the first aluminum ingot needs aluminum particles when it drops, so the cost is controllable. When the subsequent aluminum ingots drop and the first valve remains open, the falling route can be relatively fixed, and it can hit other aluminum ingots already in the furnace body for buffering. The impact can break the oxide layer on the surface of the aluminum ingot, improving the heat transfer effect and facilitating subsequent melting, killing two birds with one stone. When the aluminum ingot freely falls and hits other aluminum ingots, it may rebound (the probability of rebound is not high, mainly because the aluminum ingot is soft and most of the gravitational potential energy is absorbed through deformation during impact, but it is not absolute). And the continuously output airflow from the opened first valve can blow the rebounding aluminum ingot towards the center again, reducing the damage caused by the rebounding aluminum ingot hitting the inner wall of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an aluminum ingot melting furnace according to a specific embodiment of the present invention; Reference numeral description: 1. Furnace body; 11. Flame nozzle; 12. Feeding nozzle; 13. Cover body; 14. Circulation fan; 15. Circulation port; 16. Feeding port; 2. Buffer system; 21. Gas cylinder; 22. Storage hopper; 23. Feeding pipe; 24. First valve; 25. Second valve; 26. Heat insulation valve; 27. Mixing pipe; 28. Heater; 3. Conveying system; 4. Buffer pile; 5. Gas pipe; 51. Third valve; 6. Melting pool; 7. Aluminum ingot. SPECIFIC EMBODIMENTS

[0016] To describe in detail the technical content, the achieved purpose and the effects of the present invention, the following is described in conjunction with the embodiments and with reference to the drawings.

[0017] Please refer to Figure 1 , an aluminum ingot 7 melting furnace, comprising a furnace body 1, a buffer system 2, and a conveying system 3; The furnace body 1 includes an opening at the top, multiple rows of flame nozzles 11 uniformly arranged on the inner wall of the furnace body 1, and a feeding nozzle 12 arranged at the bottom of the inner wall of the furnace body 1; Each row of the flame nozzles 11 includes a plurality of uniformly distributed gas nozzles, and the gas outlet direction of the gas nozzles faces the center of the furnace body 1; The feeding nozzle 12 faces the center of the bottom of the inner wall of the furnace body 1; The buffer system 2 includes a gas cylinder 21, a storage hopper 22, a feed pipe 23, a first valve 24, a second valve 25, and a heat insulation valve 26. The gas cylinder 21 is connected to a plurality of flame nozzles 11 through the first valve 24; one end of the feed pipe 23 is connected to a feed nozzle 12 through the heat insulation valve 26, and the other end is connected to the gas cylinder 21 through the second valve 25. The feed pipe 23 is horizontally placed, and the storage hopper 22 is located above the feed pipe 23 and is connected to the feed pipe 23; aluminum particles stored in the storage hopper 22 enter the feed pipe 23 under the action of gravity. The conveying system 3 includes a conveyor for conveying aluminum ingots 7. The conveyor includes an output end, and the output end is located above the opening. The conveyor runs at a constant speed; when the first aluminum ingot 7 falls from the opening through the conveyor, the first valve 24, the second valve 25, and the heat insulation valve 26 are opened. The opening of the first valve 24 causes the airflow generated by the plurality of flame nozzles 11 to concentrate the travel of the falling aluminum ingot 7 near the axis of the furnace body 1; the opening of the second valve 25 causes the aluminum particles in the storage hopper 22 to be discharged through the airflow from the feed pipe 23 and the feed nozzle 12 to form a buffer pile 4 under the falling first aluminum ingot 7 for buffering, and then the second valve 25 and the heat insulation valve 26 are closed; when subsequent aluminum ingots 7 fall from the opening through the conveyor, the first valve 24 remains open so that the falling aluminum ingot 7 hits other aluminum ingots 7 already in the furnace body 1 for buffering.

[0018] As can be seen from the above description, by setting the buffer system 2 in cooperation with the conveying system 3 and combining with the flame nozzles 11, the existing structure can be utilized. When not burning, it is used as a gas nozzle. When the first valve 24 is opened, the falling of the aluminum ingot 7 can be blown by the airflow near the axis of the furnace body 1 under the action of the gas. Combining with the feed nozzle 12 facing the center of the bottom inner wall of the furnace body 1, the discharged aluminum particles can form a buffer pile 4 under the falling first aluminum ingot 7 to buffer the aluminum ingot 7, avoiding damaging the furnace body 1. Moreover, the material of aluminum is relatively soft, which can well absorb the impact and will not cause other impurities. And only the first aluminum ingot 7 needs aluminum particles when it falls, so the cost is controllable; when subsequent aluminum ingots 7 fall, the first valve 24 remains open, which can make the falling route relatively fixed and can hit other aluminum ingots 7 already in the furnace body 1 for buffering. The impact can break the oxide layer on the surface of the aluminum ingot 7, improving the heat transfer effect and facilitating subsequent melting, killing two birds with one stone; when the aluminum ingot 7 freely falls and hits other aluminum ingots 7, it may rebound (the probability of rebound is not high, mainly because the aluminum ingot 7 is soft and most of the gravitational potential energy is absorbed through deformation during impact, but it is not absolute). And the continuously output airflow from the opened first valve 24 can blow the rebounding aluminum ingot 7 back towards the center, reducing the damage caused by the rebounding aluminum ingot 7 hitting the inner wall of the furnace body 1.

[0019] Further, the aluminum ingot melting furnace further includes a melting pool 6. The bottom of the inner wall of the furnace body 1 is inclined downward and communicates with the melting pool 6, and the side communicating with the melting pool 6 is the lower side.

[0020] Further, the aluminum particles are one or more of cuboid particles and cube particles; When the aluminum particles are cuboid particles, the longest side length of the aluminum particles does not exceed 8 mm, and the shortest side length is not less than 3 mm; When the aluminum particles are cube particles, the side length range of the aluminum particles is 3 mm - 8 mm.

[0021] As can be seen from the above description, by setting the side length or diameter, the size of the aluminum particles can be within a certain range. If they are too large, the air flow cannot blow them and they cannot be sent out. If they are too small, it is difficult to form the buffer pile 4 and they are likely to scatter. And spherical or cylindrical aluminum particles are not used to avoid the spherical or cylindrical aluminum particles rolling on the inclined bottom of the furnace body 1 and being unable to form the buffer pile 4. The cuboid or cube structure can easily stand on the inclined plane.

[0022] Further, the feeding nozzle 12 is arranged towards the center of the bottom of the inner wall of the furnace body 1 and close to the side of the melting pool 6.

[0023] As can be seen from the above description, by arranging the feeding nozzle 12 close to the side of the melting pool 6, that is, above the lower side and towards the center of the bottom of the furnace body 1, the gas will not directly blow the aluminum particles into the melting pool 6 when sending out the aluminum particles, ensuring the forming effect of the buffer pile 4.

[0024] Further, the aluminum ingot melting furnace further includes a gas system. The gas system includes a gas pipe 5 and a third valve 51. The gas pipe 5 is connected to the flame nozzle 11 through the third valve 51.

[0025] Further, the aluminum ingot melting furnace is ignited by a laser igniter during ignition.

[0026] As can be seen from the above description, by using a laser igniter, since the aluminum ingot 7 may rebound, it is avoided that the ceramic igniter is damaged after the rebound.

[0027] Further, the first valve 24 and a plurality of flame nozzles 11 are connected through a mixing pipe 27, and a heater 28 is arranged in the mixing pipe 27.

[0028] As can be seen from the above description, by arranging the heater 28 in the mixing pipe 27, the furnace body 1 and the aluminum ingot 7 can be preheated in advance, shortening the subsequent preheating time of the furnace body 1 startup and improving the efficiency.

[0029] Further, the furnace body 1 further includes a cover body 13 and a circulation fan 14. A circulation port 15 and a feeding port 16 for the conveyor to convey are provided on the cover body 13. The circulation port 15, the circulation fan 14, the mixing gas pipe 27, and the flame nozzle 11 are connected in sequence.

[0030] As can be seen from the above description, through the circulation fan 14, the hot air can be recycled to reduce heat loss.

[0031] Further, a sealing cover is provided on the storage hopper 22, and the sealing cover is transparent.

[0032] As can be seen from the above description, through the transparent sealing cover, it is possible to prevent the aluminum particles from being carried out of the storage hopper 22 in reverse by the airflow when the second valve 25 is opened; the function of the transparency is to facilitate observation and timely supplement of aluminum particles.

[0033] Further, the buffer system 2 further includes an air compressor, and the air compressor is connected to the gas cylinder 21. Embodiment 1

[0034] An aluminum ingot melting furnace includes a furnace body 1, a buffer system 2, and a conveying system 3; The furnace body 1 includes an opening at the top, multiple rows of flame nozzles 11 uniformly arranged on the inner wall of the furnace body 1, and a feeding nozzle 12 arranged at the bottom of the inner wall of the furnace body 1; each row of the flame nozzles 11 includes a plurality of uniformly distributed air nozzles, and the air outlet direction of the air nozzles faces the center of the furnace body 1; the feeding nozzle 12 faces the center of the bottom of the inner wall of the furnace body 1; The buffer system 2 includes a gas cylinder 21, a storage hopper 22, a feeding pipe 23, a first valve 24, a second valve 25, and a heat insulation valve 26. The gas cylinder 21 is connected to a plurality of flame nozzles 11 through the first valve 24; one end of the feeding pipe 23 is connected to the feeding nozzle 12 through the heat insulation valve 26, and the other end is connected to the gas cylinder 21 through the second valve 25. The feeding pipe 23 is horizontally placed, and the storage hopper 22 is located above the feeding pipe 23 and connected to the feeding pipe 23; aluminum particles stored in the storage hopper 22 enter the feeding pipe 23 under the action of gravity; The conveying system 3 includes a conveyor for conveying aluminum ingots 7. The conveyor includes an output end located above the opening, and the conveyor runs at a constant speed. When the first aluminum ingot 7 falls through the conveyor from the opening, the first valve 24, the second valve 25, and the heat insulation valve 26 are opened. The opening of the first valve 24 causes the air flow generated by the plurality of flame nozzles 11 to concentrate the travel path of the falling aluminum ingot 7 near the axis of the furnace body 1. The opening of the second valve 25 causes the aluminum particles in the storage hopper 22 to be discharged through the air flow from the feed pipe 23 and the feed nozzle 12 to form a buffer pile 4 under the falling first aluminum ingot 7 for buffering, and then the second valve 25 and the heat insulation valve 26 are closed. When subsequent aluminum ingots 7 fall through the conveyor from the opening, the first valve 24 remains open so that the falling aluminum ingots 7 hit other aluminum ingots 7 already in the furnace body 1 for buffering.

[0035] The aluminum ingot 7 melting furnace further includes a melting pool 6. The bottom of the inner wall of the furnace body 1 is inclined downward and communicates with the melting pool 6, and the side communicating with the melting pool 6 is the lower side.

[0036] The aluminum particles are one or more of cuboid particles or cube particles; When the aluminum particles are cuboid particles, the longest side length of the aluminum particles does not exceed 8 mm, and the shortest side length is not less than 3 mm; When the aluminum particles are cube particles, the side length range of the aluminum particles is 3 mm - 8 mm.

[0037] The feed nozzle 12 is arranged towards the center of the bottom of the inner wall of the furnace body 1 and close to the side of the melting pool 6.

[0038] The aluminum ingot 7 melting furnace further includes a gas system. The gas system includes a gas pipe 5 and a third valve 51. The gas pipe 5 is connected to the flame nozzle 11 through the third valve 51.

[0039] The aluminum ingot 7 melting furnace is ignited by a laser igniter during ignition.

[0040] The first valve 24 is connected to the plurality of flame nozzles 11 through a mixing pipe 27, and a heater 28 is arranged in the mixing pipe 27.

[0041] The furnace body 1 further includes a cover body 13 and a circulation fan 14. A circulation port 15 and a feed port 16 for the conveyor to convey are arranged on the cover body 13. The circulation port 15, the circulation fan 14, the mixing pipe 27, and the flame nozzle 11 are connected in sequence.

[0042] The storage hopper 22 is provided with a sealing cover, and the sealing cover is transparent.

[0043] The buffer system 2 further includes an air compressor, and the air compressor is connected to the gas cylinder 21. Example Two

[0044] An aluminum ingot melting furnace, comprising a furnace body 1, a buffer system 2, and a conveying system 3; The furnace body 1 includes an opening at the top, multiple rows of flame nozzles 11 uniformly arranged on the inner wall of the furnace body 1, and a feeding nozzle 12 arranged at the bottom of the inner wall of the furnace body 1; each row of the flame nozzles 11 includes a plurality of uniformly distributed gas nozzles, and the gas outlet direction of the gas nozzles faces the center of the furnace body 1; the feeding nozzle 12 faces the center of the bottom of the inner wall of the furnace body 1; The buffer system 2 includes a gas cylinder 21, a storage hopper 22, a feeding pipe 23, a first valve 24, a second valve 25, and a heat insulation valve 26. The gas cylinder 21 is connected to a plurality of flame nozzles 11 through the first valve 24; one end of the feeding pipe 23 is connected to the feeding nozzle 12 through the heat insulation valve 26, and the other end is connected to the gas cylinder 21 through the second valve 25. The feeding pipe 23 is horizontally placed, and the storage hopper 22 is located above the feeding pipe 23 and is connected to the feeding pipe 23; aluminum particles stored in the storage hopper 22 enter the feeding pipe 23 under the action of gravity; The conveying system 3 includes a conveyor for conveying the aluminum ingot 7. The conveyor includes an output end, and the output end is located above the opening. The conveyor runs at a constant speed; when the first aluminum ingot 7 falls from the opening through the conveyor, the first valve 24, the second valve 25, and the heat insulation valve 26 are opened. The opening of the first valve 24 causes the airflow generated by the plurality of flame nozzles 11 to concentrate the travel of the falling aluminum ingot 7 near the axis of the furnace body 1; the opening of the second valve 25 causes the aluminum particles in the storage hopper 22 to be discharged through the airflow from the feeding pipe 23 and the feeding nozzle 12 to form a buffer pile 4 below the falling first aluminum ingot 7 for buffering, and then the second valve 25 and the heat insulation valve 26 are closed; when subsequent aluminum ingots 7 fall from the opening through the conveyor, the first valve 24 remains open so that the falling aluminum ingots 7 hit other aluminum ingots 7 already in the furnace body 1 for buffering.

[0045] The aluminum ingot melting furnace further includes a melting pool 6. The bottom of the inner wall of the furnace body 1 is inclined downward and is connected to the melting pool 6, and the side connected to the melting pool 6 is the lower side.

[0046] The aluminum particles are one or more of cuboid particles or cube particles; When the aluminum particles are cuboid particles, the longest side length of the aluminum particles does not exceed 8 mm, and the shortest side length is not less than 3 mm; When the aluminum particles are cube particles, the side length range of the aluminum particles is 3 mm - 8 mm.

[0047] The feeding nozzle 12 faces the center of the bottom of the inner wall of the furnace body 1 and is arranged close to the side of the melting pool 6.

[0048] The aluminum ingot melting furnace further includes a gas system, which includes a gas pipe 5 and a third valve 51. The gas pipe 5 is connected to the flame nozzle 11 through the third valve 51.

[0049] When the aluminum ingot melting furnace is ignited, it is ignited by a laser igniter.

[0050] A sealing cover is provided on the storage hopper 22, and the sealing cover is transparent.

[0051] The buffer system 2 further includes an air compressor, and the air compressor is connected to the gas cylinder 21.

[0052] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the related technical field, shall be equally included in the patent protection scope of the present invention.

Claims

1. An aluminum ingot melting furnace, characterized in that: Including furnace body, buffer system and conveying system; The furnace body comprises an opening at the top, a plurality of rows of flame nozzles evenly arranged on the inner wall of the furnace body, and a feed nozzle arranged at the bottom of the inner wall of the furnace body; each row of the flame nozzles comprises a plurality of evenly distributed gas nozzles, and the gas outlet direction of the gas nozzles is toward the center of the furnace body; the feed nozzle is toward the center of the bottom of the inner wall of the furnace body; The buffer system includes a gas cylinder, a storage hopper, a feeding pipe, a first valve, a second valve, and a heat-insulating valve. The gas cylinder is connected to a plurality of flame nozzles through the first valve; one end of the feeding pipe is connected to the feeding nozzle through the heat-insulating valve, and the other end is connected to the gas cylinder through the second valve. The feeding pipe is placed horizontally, and the storage hopper is located above the feeding pipe and is connected to the feeding pipe; aluminum particles stored in the storage hopper enter the feeding pipe under the action of gravity; The conveying system includes a conveyor for conveying aluminum ingots, the conveyor includes an output end, the output end is located above the opening, and the conveyor runs at a uniform speed; when the first aluminum ingot falls from the opening through the conveyor, the first valve, the second valve and the insulation valve are opened, the opening of the first valve causes the airflow generated by the multiple flame nozzles to make the falling stroke of the aluminum ingots concentrated near the axis of the furnace body; the opening of the second valve causes the aluminum particles in the storage hopper to be discharged from the feeding pipe and the feeding nozzle through the airflow to form a buffer pile under the first falling aluminum ingot for buffering, and then the second valve and the insulation valve are closed; when subsequent aluminum ingots fall from the opening through the conveyor, the first valve is kept open so that the falling aluminum ingots hit other aluminum ingots already in the furnace body for buffering.

2. The aluminum ingot melting furnace according to claim 1, characterized in that: The aluminum ingot melting furnace also includes a smelting pool. The bottom of the inner wall of the furnace body is inclined downward and connected to the smelting pool, and the side connected to the smelting pool is the lower side.

3. The aluminum ingot melting furnace according to claim 2, characterized in that: The aluminum particles are one or more of cuboid particles or cubic particles; When the aluminum particles are rectangular particles, the longest side length of the aluminum particles does not exceed 8 mm, and the shortest side length is not less than 3 mm; When the aluminum particles are cubic particles, the side length of the aluminum particles ranges from 3 mm to 8 mm.

4. The aluminum ingot melting furnace according to claim 2, characterized in that: The feeding nozzle is arranged toward the center of the bottom of the inner wall of the furnace body and close to one side of the smelting pool.

5. The aluminum ingot melting furnace according to claim 1, characterized in that: The aluminum ingot melting furnace also includes a gas system, which includes a gas pipe and a third valve. The gas pipe is connected to the flame nozzle through the third valve.

6. The aluminum ingot melting furnace according to claim 5, characterized in that: The aluminum ingot melting furnace is ignited by a laser igniter.

7. The aluminum ingot melting furnace according to claim 1, characterized in that: The first valve is connected to a plurality of flame nozzles through a gas mixing pipe, and a heater is arranged in the gas mixing pipe.

8. The aluminum ingot melting furnace according to claim 7, characterized in that: The furnace body also includes a cover body and a circulation fan. The cover body is provided with a circulation port and a feeding port for conveying by a conveyor. The circulation port, the circulation fan, the gas mixing pipe and the flame nozzle are connected in sequence.

9. The aluminum ingot melting furnace according to claim 1, characterized in that: The storage hopper is provided with a sealing cover, and the sealing cover is transparent.

10. The aluminum ingot melting furnace according to claim 1, characterized in that: The buffer system further comprises an air compressor which is in communication with the gas cylinder.

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