KR102079388B1 - Continuous type aluminum complex furnace - Google Patents

Abstract

The present invention relates to a continuous aluminum complex furnace. The continuous aluminum complex furnace can maintain uniform quality and minimize a loss of an aluminum raw material. Also, the continuous aluminum complex furnace can reduce processing time by being formed by a process in which a process of melting aluminum ingot and a process of removing gas and foreign substances are integrated. To achieve the purpose of the present invention, the continuous aluminum complex furnace comprises: an input tower (10) having a predetermined height in order for the aluminum ingot to be inserted therein; a melting chamber (20) including a melting burner (21) on one side to melt the aluminum ingot which is inserted through the input tower (10) at a high temperature; a heat insulation chamber (30) connected to one side of the melting chamber (20) so that molten aluminum which is melted in the melting chamber (20) flows inside the heat insulation chamber (30); a degassing chamber (40) connected to one side of the heat insulation chamber (30) and including a mixing rod (41) for supplying argon gas or nitrogen gas to discharge hydrogen gas remaining in the molten aluminum into the air; a tapping hole (50) formed on the one side of the heat insulation chamber (30) and discharging the molten aluminum; and a filter box (51) installed in the tapping hole (50) and removing the foreign substances included in the discharged molten aluminum.

Description

Continuous Aluminum Composite Melting Furnace {CONTINUOUS TYPE ALUMINUM COMPLEX FURNACE}

The present invention relates to an aluminum melting furnace, and more particularly, to a continuous aluminum composite melting furnace for providing a composite melting furnace technology in which the aluminum melting and degassing process can be performed continuously.

In general, aluminum alloy using aluminum has excellent castability, processability, and the like, and is widely used as various light weight structural materials or mechanical parts, and its usage is gradually increasing.

In particular, aluminum-related products, including aluminum wheels for automobiles, are used as molten materials. In addition to aluminum ingots (Ingots) of constant size, aluminum scraps or aluminum chips are recycled as waste aluminum and poured into the mold. Produced by die casting or casting.

Such a conventional aluminum melting furnace is a reflection furnace or an electric furnace, a crucible furnace injecting aluminum ingots or scraps of aluminum into a certain size into a melting furnace and dissolving them at a high temperature of about 750 to 850 ° C. to separate and guide the transfer. The means are discharged (water) out of the ladle and transferred to the ladle using the ladle.

Meanwhile, for casting production of aluminum products, a degassing process for removing slag and hydrogen gas contained in dissolved aluminum is essential.

However, in the prior art, the aluminum dissolving process and the degassing process are performed in separate process processes, respectively, resulting in a long process processing time and a loss of raw materials due to the generation of raw material oxides.

Republic of Korea Patent Registration No. 882873 (2009.04.03.Registration) Republic of Korea Patent Registration No. 1848432 (2018.04.06.Registration) Republic of Korea Patent Registration No. 386724 (registered May 26, 2003)

The present invention has been proposed to improve the above problems in the prior art, by providing a complex furnace structure in which the melting and degassing process of aluminum can be performed continuously, reducing the process time and the manufacturing cost accordingly The purpose is to show the savings of.

Aluminum melting furnace of the present invention for achieving the above object, the injection tower forming a certain height so that the injection of aluminum ingot; A melting chamber provided with a dissolving burner on one side to dissolve the aluminum ingots injected through the charging tower at a high temperature; An insulation chamber configured to be connected to one side such that the molten aluminum melt flows from the melting chamber; A degassing chamber connected to one side of the insulating chamber and having a stirring rod provided therein for supplying argon gas or nitrogen gas for discharging the remaining hydrogen gas into the atmosphere; A hot water outlet configured at one side of the heat insulation chamber to discharge the melt; And a filter box in which foreign substances contained in the melt discharged and provided in the tapping hole are removed.

In addition, the insulation chamber is configured with a partition that restricts movement so that the melt introduced from the melting chamber can be circulated from the inside without being discharged directly to the tap opening, and the cleaning door can be opened and closed on one side to facilitate the internal cleaning. Characterized in that provided.

The composite melting furnace of the present invention is a combination of the process of melting the aluminum ingot and the degassing and debris removal process together to reduce the process time and minimize the loss of aluminum raw materials, of equal quality The effect is maintainable.

In particular, the foreign matter removal process is made by the chemical method by the flux (flux) chemical input and the physical method by the tapping filter at the same time it is possible to maximize the clean efficiency.

In addition, it will exhibit the advantage that the melt (melt) can be stably supplied to the casting machine continuously without any additional process.

1 is a structural diagram of a composite melting furnace according to an embodiment of the present invention.
Figure 2 is an internal perspective view of the present invention composite melting furnace.
Figure 3 is a detailed structural diagram of the degassing apparatus in the present invention.
4 is a plan view of the present invention composite melting furnace plan.
5 is a detailed view of the degassing apparatus and the flux stirring unit in the present invention.
Figure 6 is a process comparison of the present invention and the prior art.
7 is a sectional view of a main part of a melting furnace according to another embodiment of the present invention.
8 is an enlarged view of a portion A of FIG. 7;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Embodiments of the invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art.

Therefore, the shape of the components, etc. represented in the drawings may be exaggerated to emphasize a more clear description. It should be noted that the same configuration in each drawing is shown with the same reference numerals. In addition, detailed descriptions of functions and configurations of well-known techniques that may unnecessarily obscure the subject matter of the present invention may be omitted.

First, looking at the configuration of the continuous aluminum composite melting furnace according to an embodiment of the present invention through Figures 1 to 6 as follows.

In the present embodiment, the composite melting furnace has an input tower 10 having a predetermined height so that the aluminum ingot is introduced, and a melting burner 21 at one side for dissolving the aluminum ingot injected through the input tower 10 at a high temperature. Is provided with a dissolution chamber 20, the insulation chamber 30 is configured to be connected to one side so that the aluminum melt dissolved in the dissolution chamber 20, and the chamber configured to be connected to one side of the insulation chamber 30 It consists of the degassing chamber 40 which comprises a structure.

In particular, the degassing chamber 40 is provided to the stirring rod 41 and the melt in which argon (Ar) gas or nitrogen (N ₂ ) gas is supplied to discharge hydrogen (H ₂ ) gas remaining in the melt into the atmosphere. Flux injection unit 43 for injecting a flux (flox) for floating the contained foreign matter is configured.

At this time, the stirring rod 41 is a high-speed rotation (400 ~ 500 RPM) is made by receiving the rotational force through the drive motor 42 as shown in Figure 3, the lower argon (Ar) gas or nitrogen a gas supply unit (41a) was formed for the supply of (N ₂₎ gas. Reference numeral 45 denotes a support.

In addition, centrifugal force is generated in the molten metal by the rotational force in the degassing process by the stirring rod 41, and centripetal force is generated at the inlet side of the snail-shaped flux injecting portion 43 connected to one side by the force generated by the centrifugal force. Generated by the vortex force is sucked into the melt (melt).

One side of the insulation chamber 30 includes a tap opening 50 through which the melt is discharged, and a filter box 51 through which foreign substances included in the melt discharged from the tap opening 50 are removed. do.

On the other hand, one side of the input tower 10 can be confirmed that the input elevator 11 in which the continuous drive is made in a conveyor form in a vertical form so that the aluminum ingot can be raised by the input.

In addition, the insulation chamber 30 is configured with a partition 32 for restricting movement so that the melt flowed from the melting chamber 20 can be circulated therein without being immediately discharged to the tap opening 50. One side of the insulation chamber 30 can be confirmed that the cleaning door 33 is provided to be opened and closed to facilitate internal cleaning.

In the figure, reference numeral 31 denotes an insulation burner for maintaining the temperature of the insulation chamber 30.

The effect of the operation of the continuous aluminum composite melting furnace of the present invention constituting such a configuration will be described.

The composite melting furnace of the present invention is made by an integrated process of melting the aluminum ingot and the degassing process, thereby shortening the processing time, minimizing the loss of aluminum raw materials, and maintaining the same quality.

That is, when a dedicated bucket is manufactured to charge 500 to 1,000 kg of aluminum ingots, and the aluminum ingots are raised through the input elevator 11 and introduced into the input tower 10, the injected aluminum ingots are dissolved in a melting chamber ( 20) The high temperature melting is performed by the heating action of the melting burner 21 in.

At this time, the aluminum ingot injected by the waste heat generated in the melting chamber 20 can be sufficiently preheated to reduce the gas consumption of the raw material melting.

Thereafter, the dissolved aluminum melt becomes liquid and flows to the insulation chamber 30 side, and the molten substance moved to the insulation chamber 30 is degassed in the process of being circulated to the degassing chamber 40 connected to one side. A clean treatment process for treatment and removal of impurities is performed.

That is, since the partition wall 32 is configured in the insulation chamber 30, the melt flowed from the melting chamber 20 may not be directly tapped into the hot water outlet 50, but internal circulation may be performed. Since the flow force is generated by the rotational force of the stirring rod 41 installed in the 40, the melt in the insulation chamber 30 is made to circulate through the degassing chamber 40.

In particular, in the circulating flow process through the degassing chamber 40, the melt is supplied by argon (Ar) gas or nitrogen (N ₂ ) gas through the gas supply part 41a formed in the stirring rod 41. The degassing treatment is performed in which the hydrogen (H ₂ ) gas remaining in the seafood is discharged to the atmosphere.

In addition, as the melt (melt) is moved to the flux injecting portion 43 by the rotational force of the stirring rod 41, vortex is generated in the flux injecting portion 43, and at this time, through the flux injecting portion 43 When a certain amount of flux (FLUX) is supplied, the injected flux is sucked into the vortex melt and a reaction occurs to separate and discharge the foreign matter contained in the melt while floating. At this time, the flux is made in a ratio of 0.1 to 0.2% by weight of the melt and by using a flake type can maximize the cleaning effect.

As described above, while the degassing treatment of the aluminum melt and the clean (refining) process by the chemical method are performed in the internal circulation process, the melt that has been suitably treated is subjected to tapping through the tap opening 50. In the process of passing through the filter box 51 configured in the tapping outlet 50, it can be seen that the cleansing of foreign substances contained in the melt by the physical method is made again, so that high-quality melt tapping can be achieved.

After that, the melted product is moved by using a forklift to be supplied to the molten casting machine.

Therefore, the composite melting furnace of the present invention is continuously made by the integrated process of melting the aluminum ingot, degassing process and physical and chemical foreign matter cleaning process as shown in Figure 6 to reduce the process time and aluminum It can be seen that it is possible to minimize the loss of raw materials and maintain an equal quality.

In particular, it exhibits the advantage that the melt (melt) can be stably supplied to the casting machine continuously without any additional process.

On the other hand, Figures 7 and 8 show a configuration according to another embodiment of the present invention, a plurality of through-holes 32a are formed in the partition wall 32, the vortex formation in the through-holes 32a during the flow process Screw-shaped coil spring (32b) is configured, it can be seen that the guide rod 34 for guiding the coil spring (32b) in the center of the through hole (32a) is configured. At this time, the guide rod 34 preferably forms a conical shape in which the cross-sectional area gradually increases from the front end to the rear end side.

When such a configuration is achieved, a portion of the aluminum melt (melt) flowing from the melting chamber 20 into the heat insulating chamber 30 collides with the partition wall 32, and a part of the partition wall 32 is formed through the through hole 32a. By passing through it, it is possible to reduce the impact transmitted to the partition wall (32).

In addition, due to the coil spring (32b) provided in the through hole (32a) in the process of passing through the through hole (32a) vortex-shaped vortex is formed to be able to homogenize the melt, and the induction rod configured in the inner ( It can be seen that the induction can be made to the coil spring 32b side by the action of 34), so that a more stable vortex phenomenon can be achieved.

And while specific embodiments of the present invention have been described and illustrated above, it is obvious that the aluminum furnace structure of the present invention may be variously modified and implemented by those skilled in the art.

For example, in the above embodiment, the insulation chamber is described and illustrated as forming a circular shape, but the shape of the insulation chamber may be made in various forms such as a square or a pentagon as necessary.

Therefore, such modified embodiments should not be understood individually from the spirit or scope of the present invention, such modified embodiments will be included within the appended claims of the present invention.

10: feed tower 11: feed elevator
20: melting chamber 21: melting burner
30: thermal insulation chamber 31: thermal burner
32: bulkhead 33: cleaning door
40: degassing chamber 41: stirring rod
42: drive motor 43: flux injection unit
50: hot water outlet 51: filter box

Claims (6)

An input tower 10 configured to have a predetermined height so that the input of aluminum ingots is made;
A dissolution chamber 20 having a dissolution burner 21 on one side to dissolve the aluminum ingots introduced through the input tower 10 at a high temperature;
An insulating chamber 30 configured to be connected to one side such that the aluminum melt melted in the melting chamber 20 is introduced;
A degassing chamber 40 connected to one side of the insulating chamber 30 and having a stirring rod 41 for supplying argon gas or nitrogen gas for discharging the remaining hydrogen gas into the atmosphere;
A hot water outlet 50 configured at one side of the heat insulation chamber 30 to discharge the melt;
It includes; filter box 51 which is provided in the hot water outlet 50 is removed foreign matter contained in the melt discharged;
The insulation chamber 30 has a partition 32 configured to restrict movement so that the melt introduced from the melting chamber 20 can be circulated therein without being immediately discharged to the tap opening 50,
The partition 32 has a plurality of through holes 32a formed therein, and inside the through holes 32a, a screw-shaped coil spring 32b for vortex formation is formed in the flow process, and a center of the through holes 32a is formed. There is a guide rod 34 for guiding the coil spring 32b side is configured, the guide rod 34 is a continuous aluminum composite melting furnace, characterized in that to form a conical shape gradually increasing in cross-section from the front end to the rear end side . The method according to claim 1,
One side of the input tower 10 is a continuous aluminum composite melting furnace, characterized in that the input elevator 11 is configured in a vertical form so that the aluminum ingot can be put up. The method according to claim 1,
One side of the insulation chamber 30 is a continuous aluminum composite melting furnace, characterized in that the cleaning door 33 is provided to be opened and closed to facilitate the internal cleaning. The method according to claim 1,
Flux injecting portion 43 for injecting a flux (flux) for floating the foreign matter contained in the melt by forming a vortex under the influence of the rotational force of the stirring rod 41 on one side of the degas chamber 40 is configured Continuous aluminum composite melting furnace. The method according to claim 1,
The stirring rod 41 is a high speed rotation by the operation of the drive motor 42 is made, continuous aluminum composite melting furnace, characterized in that the gas supply portion (41a) is configured for the supply of argon gas or nitrogen gas. delete

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