WO2019045419A1 - 알루미늄 용해로 - Google Patents

알루미늄 용해로 Download PDF

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Publication number
WO2019045419A1
WO2019045419A1 PCT/KR2018/009926 KR2018009926W WO2019045419A1 WO 2019045419 A1 WO2019045419 A1 WO 2019045419A1 KR 2018009926 W KR2018009926 W KR 2018009926W WO 2019045419 A1 WO2019045419 A1 WO 2019045419A1
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WIPO (PCT)
Prior art keywords
aluminum
flow
molten aluminum
flow passage
guide member
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Application number
PCT/KR2018/009926
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English (en)
French (fr)
Korean (ko)
Inventor
안병두
신용국
윤수현
Original Assignee
(주)디에스리퀴드
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Application filed by (주)디에스리퀴드 filed Critical (주)디에스리퀴드
Priority to JP2020509008A priority Critical patent/JP7022816B2/ja
Publication of WO2019045419A1 publication Critical patent/WO2019045419A1/ko

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
    • F27B3/045—Multiple chambers, e.g. one of which is used for charging
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0084—Obtaining aluminium melting and handling molten aluminium
    • C22B21/0092—Remelting scrap, skimmings or any secondary source aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/20—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to an aluminum melting furnace for melting aluminum scrap.
  • Aluminum melting furnace is a device which dissolves aluminum scrap formed at a certain size into high heat.
  • a conventional aluminum melting furnace is provided with an autoclaving room having a burner for heating molten aluminum, a molten metal stirring chamber having a molten metal pump for pumping molten aluminum discharged from the molten metal room, (Korean Patent Publication No. 10-1425572, published on July 31, 2014).
  • the aluminum compression compacted chip is also called an aluminum ingot, and a large number of aluminum chips generated during the production or processing of aluminum products are compressed.
  • the aluminum compacting chip lumps contain many voids in the process of compressing the aluminum chip. Therefore, in the conventional aluminum melting furnace, since the heat is not sufficiently transferred to the central portion of the aluminum compression chip ingot put into the aluminum molten metal, the melting efficiency is lowered and the aluminum compression chip ingot floats up to the surface of the aluminum molten metal, .
  • the conventional aluminum melting furnace is pumped in a molten metal stirring chamber and then injected into a molten aluminum which has been transferred to a molten aluminum chamber.
  • Dissolution proceeds in a state in which the compacted chip lumps are suspended in the molten aluminum. Therefore, the conventional aluminum melting furnace still has a problem that the dissolution efficiency is lowered even when a mass of aluminum compressed chips is poured into the aluminum molten aluminum pumped in the molten metal stirring chamber, and the amount of aluminum oxide generated is large and the recovery rate of pure aluminum is lowered.
  • paints and other inclusions are generally included in the aluminum ingot which is put into the molten aluminum. As these inclusions increase, the purity of aluminum decreases.
  • a flux capable of preventing the oxidation of aluminum and capable of trapping inclusions is put into the molten aluminum.
  • the dross generated by fluxing the molten aluminum in this way is called black dross.
  • the conventional aluminum melting furnace still has a problem that the recovery rate of pure aluminum is lowered even when flux treatment is performed.
  • An object of the present invention is to provide an aluminum melting furnace improved in structure so as to increase the melting efficiency of aluminum scrap.
  • an object of the present invention to provide an aluminum melting furnace improved in structure so as to reduce the amount of aluminum oxide generated.
  • an object of the present invention to provide an aluminum melting furnace improved in structure so as to increase the recovery rate of pure aluminum.
  • an aluminum melting furnace includes: a heating chamber having a heating unit for heating aluminum molten metal; A stirring unit for stirring the aluminum molten metal; and a control unit for controlling the flow of the aluminum molten metal flowing from the heating chamber and the flow of the molten aluminum formed by the stirring unit in advance And a first guide member for guiding the flow of the molten aluminum so as to be mixed in a predetermined mixed region.
  • the first guide member has a first surface for guiding the flow of the molten aluminum introduced from the heating chamber toward the mixed region.
  • the first guide member further includes a second surface for guiding the flow of the molten aluminum formed by the stirring unit to the mixing region.
  • the first surface and the second surface are arranged so that the flow of the molten aluminum melted from the heating chamber and the flow of the molten aluminum formed by the stirring unit are mixed at an acute angle in the mixed region, .
  • the apparatus further comprises a first flow passage communicating the heating chamber and the dissolution chamber so that the molten aluminum heated by the heating unit flows into the dissolution chamber from the heating chamber, And further includes a wall.
  • the first guide member is disposed between the first flow passage and the agitation unit so as to partition between the first flow passage and the agitation unit.
  • the first surface is formed by extending from the first flow passage toward the mixing region at a predetermined first point of the wall, such that the flow of the molten aluminum introduced from the heating chamber is directed toward the mixing region from the first flow passage
  • the second surface is formed so as to extend toward the mixing region at a predetermined second point of the wall so that the flow of the molten aluminum formed by the stirring unit is directed to the mixing region in the stirring unit.
  • the first guide member is arranged so that the flow of the molten aluminum melt mixed in the mixed region passes through a space between the inner surface of one of the first guide member and the dissolution chamber, And are spaced apart from each other by a predetermined distance.
  • the first guide member protrudes from the wall toward one of the inner side surfaces by a length of 0.25 times or more and 0.5 times or less of the distance between the first flow passage and the one inner side surface.
  • the apparatus further comprises a second guide member for guiding the flow of the molten aluminum melt mixed in the mixed region so that the flow of the molten aluminum melt mixed in the mixed region is directed to the interstitial space.
  • the second guide member has a curved surface or a polygonal surface eccentric to the interspace toward the one of the inner side surfaces from the first flow passage.
  • the second surface extends toward one end of the curved surface or the polyhedral surface located on the side of the first flow passage.
  • the second guide member is disposed at an edge portion connecting one of the inner side surfaces of the dissolution chamber and one of the inner side surfaces located between the one inner side surface and the wall.
  • the curved surface has a radius of curvature corresponding to a distance between one end of the curved surface and the corner.
  • the wall is provided with a first guide member and a second guide member which communicate with the melting chamber so as to allow the molten aluminum that has passed through the space between the first guide member and the one inner surface to flow into the heating chamber from the melting chamber. Further comprising a flow passage.
  • the stirring unit is formed to be positioned between the first guide member and the second flow passage.
  • the stirring unit has a stirring impeller installed at a predetermined depth of the aluminum molten metal.
  • the stirring impeller includes a disk having a predetermined diameter and a plurality of planar blades radially disposed on the disk.
  • the second flow passage is formed so as to be spaced apart from the predetermined third point of the wall in close proximity to the center axis of the stirring impeller by 1.5 times or more and 2.5 times or less of the diameter of the stirring impeller.
  • the stirring impeller is rotated in a predetermined rotational direction so that the flow of the molten aluminum formed by the rotation of the stirring impeller is directed to the mixing region along the second surface.
  • the second flow passage is formed at a position deeper than a surface of the molten aluminum by a predetermined depth.
  • the second flow passage is formed so that the uppermost portion of the second flow passage is located at a depth of at least 0.5 times the level of the molten aluminum from the surface of the molten aluminum.
  • the second flow passage has a cross-sectional area that is at least 1.5 times greater than the first flow passage.
  • the melting chamber further comprises a flux supply unit for injecting flux into the molten aluminum.
  • the stirring unit forms a vortex in the molten aluminum
  • the raw material supplying unit injects the aluminum scrap into the vortex
  • the flux supplying unit injects the flux into the vortex
  • the aluminum melting furnace according to the present invention has the following effects.
  • the present invention can reduce the amount of aluminum oxide generated by rapidly charging aluminum scrap into aluminum melt using a vortex.
  • the present invention can minimize the flow loss of molten aluminum by adjusting the flow path of the molten aluminum by using the guide member.
  • the molten aluminum can be circulated smoothly by only the fluid force provided from the stirring impeller, without the necessity of separately installing the molten metal pump. Therefore, according to the present invention, it is possible to prevent the molten metal pump from being damaged by the refractory or other constituent pieces constituting the aluminum melting furnace, and the installation cost of the molten metal pump can be reduced.
  • a non-metallic inclusion is selectively trapped in a flux, and black dross generated is gathered into a spherical shape using a vortex to form a spherical black droplet, And the dissolution recovery rate of pure aluminum can be increased. Further, since the present invention does not require a separate dross reprocessing process for recovering aluminum contained in the dross, it is possible to reduce the cost of reprocessing the dross.
  • the melting operation of the aluminum scrap in a state in which the spherical black dross covers the molten aluminum in the melting chamber, so that the molten aluminum in the melting chamber is not covered with the spherical black dross, It is possible to increase the temperature of the molten aluminum because the heat insulating effect is superior to the case of performing the melting operation. Therefore, according to the present invention, the melting operation of the aluminum scrap can be performed in a state where the temperature of the molten aluminum is raised, so that the melting efficiency of the aluminum scrap can be improved.
  • FIG. 1 is a plan view showing a schematic structure of an aluminum melting furnace according to a preferred embodiment of the present invention.
  • Fig. 2 is a partially cut sectional view showing a schematic structure of the dissolution chamber shown in Fig. 1; Fig.
  • Fig. 3 is a view for explaining an aspect in which the flow of aluminum melt is controlled by the guide member shown in Fig. 1; Fig.
  • Fig. 4 is a perspective view of the stirring impeller shown in Fig. 2; Fig.
  • FIG. 5 is a view for explaining a process of forming a spherical black dross in the dissolving chamber shown in Fig.
  • FIG. 6 is an actual photograph of the spherical black dross shown in Fig. 5;
  • FIG. 7 is a plan view of a melting chamber showing a state in which spherical black dross is floating on the surface of molten aluminum contained in the melting chamber shown in Fig.
  • FIG. 1 is a plan view showing a schematic structure of an aluminum melting furnace according to a preferred embodiment of the present invention
  • FIG. 2 is a partial cut sectional view showing a schematic structure of a melting chamber shown in FIG.
  • an aluminum melting furnace 1 includes a heating chamber 10 in which a molten aluminum melt M is heated and an aluminum scrap A and a flux F, And a dissolution chamber 20 to be introduced into the reaction chamber M and the like.
  • the aluminum melting furnace 1 has a plurality of inner spaces formed to be surrounded by a plurality of walls 30 having a refractory material.
  • the heating chamber 10 and the dissolution chamber 20 are each provided in an inner space of one of the inner spaces of the aluminum melting furnace 1 independently from other inner spaces.
  • the shapes of the heating chamber 10 and the melting chamber 20 are not particularly limited.
  • the heating chamber 10 and the melting chamber 20 may each be provided in a square shape.
  • the wall 32 provided between the heating chamber 10 and the melting chamber 20 among the walls 30 of the aluminum melting furnace 1 is made of aluminum melt M,
  • the first flow passage 32a and the second flow passage 32b are preferably formed at a position deeper than a surface of the molten aluminum M by a predetermined depth. 2, the first flow passage 32a and the second flow passage 32b are formed so as to connect the deepest portion of the heating chamber 10 and the deepest portion of the melting chamber 20, respectively But it is not limited thereto.
  • the molten aluminum M can sequentially circulate the heating chamber 10 and the melting chamber 20 through these flow passages 32a and 32b in a predetermined order. The details of the circulation of the molten aluminum M will be described later.
  • the heating chamber 10 is a space for heating the molten aluminum M to a predetermined temperature.
  • the heating chamber 10 is communicated with the melting chamber 20 by the first flow passage 32a and the second flow passage 32b to transfer the molten aluminum M to the melting chamber 20, ).
  • the heating chamber 10 is formed in a closed structure in which the remaining portion except the portion connected to the first flow passage 32a and the second flow passage 32b is shielded from the outside so that heat loss can be minimized.
  • the heating chamber 10 is provided with a heating unit 12 for heating the molten aluminum M contained in the heating chamber 10 and a molten aluminum melt M contained in the heating chamber 10, And an outflow port (14) for discharging to the outside of the aluminum melting furnace (1).
  • the heating unit 12 is a device for heating the molten aluminum M contained in the heating chamber 10 to a predetermined temperature.
  • the structure of the heating unit 12 is not particularly limited.
  • the heating unit 12 may be a burner installed in any one of the walls 30 provided so as to surround the heating chamber 10. As shown in Fig.
  • the temperature of the molten aluminum (M) contained in the heating chamber (10) can be measured by a temperature sensor (not shown) provided in the heating chamber (10).
  • the heating unit 12 receives the temperature of the molten aluminum M contained in the heating chamber 10 from the temperature sensor and can heat the molten aluminum M contained in the heating chamber 10 to a predetermined heating temperature have.
  • the outflow port (14) provides an outlet for discharging the molten aluminum (M) contained in the heating chamber (10) to the outside of the aluminum melting furnace (1).
  • the tapping tunnel 14 may be connected to an aluminum manufacturing apparatus for producing an aluminum casting or may be connected to a molten metal transfer vessel for transferring the molten aluminum (M).
  • An open / close valve (18) capable of selectively opening and closing the tapping tunnel (14) can be installed in the tapping tunnel (14).
  • the molten aluminum M contained in the heating chamber 10 can be introduced into the dissolution chamber 20 through the first flow passage 32a or discharged to the outside through the tapping tunnel 14.
  • FIG. 3 is a view for explaining how the flow of molten aluminum is controlled by the guide member shown in FIG. 1, and FIG. 4 is a perspective view of the stirring impeller shown in FIG.
  • FIG. 5 is a view for explaining a process of forming a spherical black dross in the dissolving chamber shown in FIG. 1, and FIG. 6 is an actual photograph of the spherical black dross shown in FIG.
  • the melting chamber 20 is a space for injecting the flux F and the aluminum scrap A into the molten aluminum M of aluminum.
  • the dissolving chamber 20 communicates with the heating chamber 10 through the first flow passage 32a and the second flow passage 32b to receive the molten aluminum M from the heating chamber 10, ) Of the molten aluminum (M).
  • the melting chamber 20 is formed with an open structure in which at least a part of the upper surface is opened so as to allow the flux F and the aluminum scrap A to be introduced into the molten aluminum M contained in the melting chamber 20, (10). ≪ / RTI > That is, the dissolution chamber 20 is formed in an open structure so that the aluminum scrap A and the flux F can be injected into the molten aluminum M contained in the dissolution chamber 20 to perform a dissolving operation,
  • the heating chamber 10 is formed to have a relatively small volume as compared with the heating chamber 10.
  • the volume ratio of the heating chamber 10 and the dissolution chamber 20 is preferably about 3: 1, but is not limited thereto.
  • the melting chamber 20 is provided with a stirring unit 21 for stirring the molten aluminum M and a flux supply unit 21 for supplying the flux F to the molten aluminum M
  • a raw material supply unit 23 for supplying the aluminum scrap A to the aluminum melt M and a flow M1 of molten aluminum M flowing from the heating chamber 10 and a stirring unit 21,
  • a guide member 24 for guiding the flow of the molten aluminum M so that the flow M2 of the molten aluminum M formed by the molten aluminum M does not interfere with each other.
  • the stirring unit 21 is a member for stirring the molten aluminum (M). 2, the stirring unit 21 includes a driving motor 21a for providing a driving force and a stirring impeller 21b for stirring the molten aluminum M through a driving force provided from the driving motor 21a .
  • the drive motor 21a is preferably installed outside the melting chamber 20 so as not to be immersed in the molten aluminum M, but is not limited thereto.
  • This drive motor 21a can provide a driving force for stirring the aluminum melt M to the stirring impeller 21b.
  • the drive motor 21a is configured so that the second flow M2 to be described later is moved along the second surface 25b of the first guide member 25 to be described later,
  • the stirring impeller 21b can be rotationally driven in a predetermined rotational direction so as to be directed to the mixed region B.
  • the rotational direction of the stirring impeller 21b is not particularly limited and the driving motor 21a may rotate the stirring impeller 21b clockwise or counterclockwise according to the positional relationship between the stirring impeller 21b and the first flow passage 32a As shown in Fig.
  • the stirring impeller 21b is installed at a predetermined depth of the molten aluminum M so as to be immersed in the molten aluminum M as shown in Fig. Further, the stirring impeller 21b is installed so as to be positioned between the first guide member 25 and the second flow passage 32b, which will be described later, as shown in Fig.
  • the structure of the stirring impeller 21b is not particularly limited.
  • the stirring impeller 21b may include a disk 21c to be axially coupled to the driving motor 21a, wings 21d to be coupled to the disk 21c, and the like .
  • the disk 21c has a predetermined diameter and is axially coupled to the drive motor 21a by a rotation shaft 21e.
  • the disk 21c preferably has a disk shape, but is not limited thereto.
  • the rotating shaft 21e is a member for transmitting the driving force of the driving motor 21a to the disk 21c and the lower end of the rotating shaft 21e is immersed in the molten aluminum M to be axially engaged with the central axis of the disk 21c , And the upper end of the rotating shaft 21e extends to the outside of the melting chamber 20 and is axially coupled to the driving motor 21a.
  • the wings 21d have a flat plate-like structure as shown in Fig. 4, and are radially arranged on the disk 21c at predetermined intervals.
  • the wings 21d are preferably arranged so as to be perpendicular to the disc 21c so as to press the molten aluminum M contained in the melting chamber 20 in the tangential direction of the disc 21c, .
  • the wings 21d are preferably connected at one end to the rotary shaft 21e, but the present invention is not limited thereto.
  • the size of the stirring impeller 21b is not particularly limited.
  • the stirring impeller 21b may have a diameter D of 0.2 times or more and 0.5 times or less of the width W of the melting chamber 20.
  • the width W of the dissolution chamber 20 is defined by the wall 32 on which the flow passages 32a and 32b are formed and the flow passages 32a and 32b among the walls 30 provided so as to surround the dissolution chamber 20, And 32b, respectively.
  • the stirring impeller 21b agitates the molten aluminum M contained in the melting chamber 20 and stirs the vortex V rotating around the stirring impeller 21b.
  • the molten aluminum M can be supplied with a fluid force for sequentially circulating the heating chamber 10 and the melting chamber 20 through the aluminum melt M.
  • the molten aluminum M supplied from the stirring impeller 21b can be radiated in the tangential direction of the vortex V about the stirring impeller 21b have.
  • first flow M1 The flow of the molten aluminum M flowing into the melting chamber 20 from the heating chamber 10 through the first flow passage 32a will be referred to as a first flow M1
  • second flow M2 The flow of the molten aluminum M radiated in the tangential direction of the eddy current V by the fluid force provided from the impeller 21b will be referred to as a second flow M2.
  • the stirring impeller 21b when the stirring impeller 21b directly faces the first flow M1, there is a fear that the first flow M1 and the second flow M2 cancel each other. To prevent this, as shown in FIG. 3, the stirring impeller 21b is preferably provided so as to be spaced apart from the first flow passage 32a by a predetermined gap so as not to directly face the first flow M1 Do.
  • the flux supply unit 22 is a device for inputting the flux F supplied from an external flux supply source (not shown) into the molten aluminum M contained in the dissolution chamber 20.
  • the flux F is a mixed salt having a specific gravity smaller than that of aluminum and is formed of a material having a high affinity with the nonmetallic inclusion of the aluminum scrap (A).
  • the flux supply unit 22 injects the flux F into the eddy current V generated by the stirring unit 21, as shown in Fig. Then, the flux F can be rapidly charged into the aluminum molten metal M by the vortex V and then diffused evenly into the molten aluminum M after being dissolved.
  • the present invention is not limited to this, and the flux supply unit 22 may inject the flux F to other portions of the molten aluminum M than the vortex V.
  • the injection timing of the flux (F) is not particularly limited.
  • the flux supply unit 22 may preliminarily inject the flux F into the eddy current V before the raw material supply unit 23 puts the aluminum scrap A into the eddy current V.
  • the flux F is immersed and dissolved in the molten aluminum M while swirling downward by the eddy current (V). Since the flux F has a specific gravity relatively smaller than that of aluminum, the flux F dissolved in the molten aluminum M floats on the surface of the molten aluminum M and melts on the surface of the molten aluminum M Forming a flux layer, i.e., a salt layer.
  • a molten flux layer can prevent the aluminum scrap A, which has been introduced into the molten aluminum (M) and the molten aluminum (M), from being in contact with oxygen in the atmosphere, thereby reducing the amount of aluminum oxide produced.
  • Such flux (F) has a composition capable of selectively capturing inclusions and forming a molten flux layer on the surface of the molten aluminum (M).
  • the flux (F) may comprise 93-97 parts by weight of a mixture of sodium chloride (NaCl) and potassium chloride (KCl) in the same weight parts and 3-7 parts by weight of cryolite (Potassium Cryolite). More preferably, flux (F) may comprise 47.5 parts by weight of sodium chloride (NaCl), 47.5 parts by weight of potassium chloride (KCl) and 5 parts by weight of potassium aluminum fluoride (KAlF 4 ).
  • the flux supply unit 22 starts to supply the flux F to the vortex V simultaneously with or at the same time as the closing timing of the aluminum scrap A, . That is, even after the start of feeding of the aluminum scrap A, the flux F is supplied continuously or intermittently in accordance with the supply trend of the aluminum scrap A.
  • the flux F is preferably supplied in an amount equal to the amount of the nonmetallic inclusion to be captured, but is not limited thereto. That is, the supply amount of the flux F can be adjusted according to the supply amount of the aluminum scrap A and the kind of the aluminum scrap A. For example, when aluminum scrap A containing a paint or other large amount of nonmetallic inclusions such as UBCs scrap is supplied, the supply amount of flux F is increased and the amount of aluminum scrap A having high purity is increased, The supply amount of the flux F can be reduced.
  • the raw material supply unit 23 is an apparatus for supplying the aluminum scrap A supplied from an external raw material supply source (not shown) to the molten aluminum M contained in the dissolution chamber 20.
  • the raw material supply unit 23 injects the aluminum scrap A into the vortex V generated by the stirring unit 21, as shown in Fig. Since the aluminum scrap A can be rapidly charged and melted into the molten aluminum M while swirling downward by the vortex V, the contact between the aluminum scrap A loaded in the molten aluminum M and the atmosphere is further enhanced The amount of generated aluminum oxide can be further reduced.
  • the timing of introduction of the aluminum scrap A is not particularly limited.
  • the raw material supply unit 23 can start supplying the aluminum scrap A after the molten flux layer is formed on the surface of the molten aluminum (M). Then, the aluminum scrap (A) can be charged into the molten aluminum (M) in a state where the molten flux layer is formed on the surface of the molten aluminum (M). As a result, the contact between the aluminum scrap A loaded in the molten aluminum M and the atmosphere is more effectively blocked, so that the amount of aluminum oxide generated can be further reduced.
  • the aluminum scrap A When the diameter of the aluminum scrap A is large, there is a problem that the heat transmission rate is lowered. Therefore, it is preferable that at least part of the aluminum scrap A is an aluminum chip having a diameter of 5 cm or less. When the diameter of the aluminum scrap (A) is large, the heat transmission rate is lowered, so that the aluminum chip having a relatively small diameter is supplied.
  • such an aluminum chip can be manufactured by crushing or processing aluminum scrap, such as aluminum compacts.
  • the kind of the aluminum scrap A is not particularly limited.
  • at least a portion of the aluminum scrap A may be an aluminum waste scrap (UBCs, A 3XXX series, A 5XXXX series) predominantly comprising aluminum, magnesium and aluminum alloys.
  • UBCs aluminum waste scrap
  • a 3XXX series A 3XXXX series
  • a 5XXXX series A 3XXXX series
  • Table 1 The chemical composition of such aluminum waste can scrap is shown in Table 1 below.
  • the inclusions of the aluminum scrap (A) have a property that when the aluminum scrap (A) is charged into the molten aluminum (M) and melted, it coalesces with molten aluminum.
  • the soluble flux layer that is, the flux (F) weakens the cohesive force between the inclusions and the molten aluminum to dissociate the inclusions and the molten aluminum, and selectively captures the molten aluminum and the dissociated inclusions to form the black dross .
  • the black dross B1 increases in volume during the above-described forming process and has a lower specific gravity than that of the molten aluminum, thereby floating on the surface of the molten aluminum (M).
  • the black dross B1 is detached from the vortex V when it is lowered by the vortex V and reaches the lower end of the vortex V, and then the molten aluminum M) and joined to the vortex (V) by the suction force of the vortex (V) again.
  • the black dross B1 is bonded to another black dross B1 generated on the surface of the molten aluminum M through this process.
  • a spherical black dross B2 is formed in which a plurality of black dots B1 are spherically gathered.
  • the stirring unit 21 repeatedly descends and floats the black dross B1 through the vortex V, whereby a large number of black drosses B1 form spherical black dross B2 gathered in a spherical shape Lt; / RTI >
  • the chemical composition of such spherical black dross (B2) is not particularly limited.
  • the aluminum scrap (A) is an aluminum waste can scrap (UBCs scrap) and the flux (F) is 47.5 parts by weight of sodium chloride (NaCl), 47.5 parts by weight of potassium chloride (KAlF 4 ) 5 parts by weight
  • the chemical composition of the spherical black dross (B2) is shown in Table 2 below.
  • composition chemicals Chemical Composition (%) Al 5-10 Al2O3 25-35 Mg 5-10 MgO 5-10 NaCl 20-30 KCl 20-30
  • the spherical black dross B2 is formed gradually as the black dross B1 repeatedly descends and floats the aluminum molten metal M and thus the spherical black dross B2 is more uniform than the ordinary black dross formed once, The removal performance of nonmetallic inclusions is excellent. Therefore, when the spherical black droplet B2 is formed, the aluminum content of the droplet can be reduced as compared with the case of forming a general black droplet.
  • a black dross formed by fluxing white dross in a conventional black dross melting process for example, a conventional aluminum waste cans melting process
  • the guide member 24 is a member for adjusting the traveling path of the first flow M1 and the second flow M2 so that the first flow M1 and the second flow M2 do not cancel each other.
  • the second flow M2 is formed by radiating the molten aluminum M in the tangential direction of the vortex V about the agitating impeller 21b, so that the second flow M2 is supplied to the agitating impeller 21B ).
  • a portion of the second flow M2 that flows toward the first flow passage 32a is hereinafter referred to as a portion of the second flow M2)
  • the first flow M1 and the part of the second flow M2 may be mixed with each other at an angle equal to or greater than a predetermined reference angle. Then, due to the destructive interference between the first flow M1 and the part of the second flow M2, the first flow M1 and the part of the second flow M2 may each lose fluid flow .
  • the guide member 24 is configured to allow the first flow Ml and the portion of the second flow M2 to flow from the first flow M1 to the second flow M2 such that the destructive interference between the first flow M1 and the second flow M2 can be minimized. And the travel path is adjustable.
  • the structure of the guide member 24 is not particularly limited.
  • the guide member 24 may be configured to guide the first flow M1 and the second flow M2 to the first mixing zone B of the melting chamber 20, The guide member 25 and the first flow M1 and the part of the second flow M2 mixed with each other in the mixing region B by the first guide member 25 toward the second flow passage 32b A second guide member 26 that can be guided, and the like.
  • the mixed region B refers to one region of the melting chamber 20, which is set at a position where the first flow M1 and the portion of the second flow M2 can be mixed at an acute angle.
  • the molten aluminum M formed by selectively mixing the first flow M1 and the part of the second flow M2 in the mixing region B by the first guide member 25 will be described below. Will be referred to as a third flow (M3).
  • the first guide member 25 has a block shape and has a first flow M1 and a second flow M2 such that the first flow M1 and the second flow M2 are directed toward the mixing region B,
  • the flow of the second flow M2 of the second fluid M2 is adjustable.
  • the first guide member 25 includes a first surface 25a provided at one side so as to guide the first flow M1 to the mixing region B, A second surface 25b provided on the other side so as to guide the mixed region B to the mixed region B, and the like.
  • the first guide member 25 is made of a refractory material and can be disposed between the first flow passage 32a and the stirring impeller 21b so as to partition the first flow passage 32a and the stirring impeller 21b have.
  • the first guide member 25 is preferably formed separately and coupled to the wall 32, but is not limited thereto. That is, the first guide member 25 may be formed together with the wall body 32 so as to be integral with the wall body 32.
  • the first guide member 25 is provided so as to extend from the wall body 32 to one side of the melting chamber 20 by a distance L1 smaller than the width W of the melting chamber 20. [ And may protrude toward the inner side surface 34a.
  • One of the inner side surfaces 34a of the dissolution chamber 20 is an inner side of the wall 34 positioned to face the first flow passage 32a among the walls 30 provided to surround the dissolution chamber 20. [ Speak side.
  • the inner surface 34a of one of the dissolution chambers 20 will be referred to as a first inner surface 34a hereinafter.
  • the first guide member 25 may extend from the wall body 32 toward the first inner side face 34a by a distance L1 of not less than 0.25 times and not more than 0.5 times the width W of the dissolution chamber 20 It can be installed in a protruding manner.
  • the third flow M3 formed by mixing the first flow M1 and the part of the second flow M2 is formed by the first guide member 25, (S) of the first flow passage (34a) and toward the second flow passage (32b).
  • the first surface 25a extends from the predetermined first point 32c of the wall 32 toward the mixed region B as shown in Fig.
  • the first point 32c of the wall 32 is located between the inner surface 36a of the dissolving chamber 20 located between the wall 32 and the first inner surface 34a and the first surface 25a And may be set at a position spaced apart from the other inner surface 36a of the dissolution chamber 20 by a predetermined distance so that the first flow M1 can pass through the space.
  • the other inner side 36a of the dissolving chamber 20 is a wall 36 connecting the wall 32 and the wall 34 among the walls 30 provided to surround the dissolving chamber 20, Quot;
  • the other inner surface 36a of the dissolving chamber 20 will be referred to as a second inner surface 36a hereinafter.
  • the position of the first point 32c of the wall 32 is not particularly limited.
  • the first point 32c of the wall 32 is connected to a first flow passage 32a located to be spaced from the second inner side surface 36a of the dissolution chamber 20 by the width of the first flow passage 32a
  • the first surface 25a may be provided parallel to the second inner side surface 36a.
  • the first surface 25a is provided with a molten aluminum melt (molten aluminum alloy) having the same width as the first flow passage 32a in the interval between the first flow passage 32a and the mixed region B M) (hereinafter, referred to as "third flow passage 27").
  • the first flow M1 is controlled by the third flow passage 27 toward the mixing region B so as to be mixed along the third flow passage 27, And is guided to the area B.
  • the first flow M1 guided to the mixing region B in this way is mixed with the part of the second flow M2 guided to the mixing region B by the second surface 25b to be described later, Flow M3 can be formed.
  • the second surface 25b extends from the second predetermined point 32d of the wall 32 toward the mixed region B as shown in Fig.
  • the second point 32d of the wall 32 can be set at a predetermined distance from the first point 32c so as to be positioned on the side of the second flow passage 32b with respect to the first point 32c have.
  • the second surface 25b may be formed to have a predetermined angle with the first surface 25a.
  • the second surface 25b may be formed such that a hypothetical line E extending from the second surface 25b is formed at a predetermined intersection point 36b of the second inner surface 36a, And may be formed to have an acute angle with the first surface 25a.
  • the imaginary line E refers to a virtual line extending from the second surface 25b so as to be in line with the second surface 25b.
  • the part of the second flow M2 advances toward the first flow passage 32a and then comes into contact with the second surface 25b. Thereafter, the part of the second flow M2 is guided to the mixed region B along the second surface 25b by the second surface 25b, the path of travel being adjusted toward the mixed region B .
  • the part of the second flow M2 thus guided to the mixing region B is mixed at an acute angle with the first flow M1 guided to the mixing region B by the first surface 25a described above,
  • the third flow M3 can be formed.
  • the first guide member 25 has the first surface 25a and the second surface 25b so that the first flow M1 and the second flow M2 can be mixed at an acute angle in the mixing region B, Can be used to individually adjust the traveling path of the first flow M1 and the traveling path of the second flow M2, respectively.
  • the first guiding member 25 is provided between the first flow M1 and the second flow M2 by minimizing the destructive interference occurring when the first flow M1 and the second flow M2 are mixed. The flow loss of the first flow M1 and the second flow M2 due to the destructive interference can be minimized.
  • the second guide member 26 has a block shape so that the progressing path of the third flow M3 is gradually shifted toward the space S between the first guide member 25 and the first inner side surface 34a 3 flow M3.
  • the second guide member 26 is moved toward the space S between the first guide member 25 and the first inner side surface 34a toward the first inner side surface 34a from the first flow path 32a side And may have a curved surface 26a provided eccentrically on one side.
  • the second guide member 26 may be formed in a curved shape so that the first guide member 25 and the second guide member 25 can be moved in the direction from the first flow passage 32a toward the first inner side 34a, And may have a polygonal surface eccentrically provided on one side toward the space S between the inner side surfaces 34a.
  • the present invention will be described below by taking the case where the second guide member 26 has a curved surface 26a as an example.
  • the second guide member 26 is formed of a refractory material and may be disposed at a corner where the first inner side 34a and the second inner side 36a are connected.
  • the second guide member 26 is preferably formed with the walls 34 and 36 integrally with the walls 34 and 36, but is not limited thereto. That is, the second guide member 26 may be formed separately and may be coupled to the corner portion.
  • the curved surface 26a may extend from the intersection point 36b of the virtual line E and the second inner side surface 36a to the predetermined end point 34b of the first inner side surface 34a.
  • the second surface 25b is then directed to the starting point of the curved surface 26a located at the intersection 36b of the second inner surface 36a to naturally guide the second flow M2 to the starting point of the curved surface 26a .
  • the curvature radius R of the curved surface 26a is preferably equal to the distance L2 between the intersection 36b of the second inner side surface 36a and the corner, but is not limited thereto.
  • This curved surface 26a gradually shifts the traveling path of the third flow M3 toward the space S between the first guide member 25 and the first inner side surface 34a as shown in Fig. can do.
  • the second guide member 26 can minimize the flow loss of the third flow M3, which occurs upon switching of the traveling path of the third flow M3.
  • the third flow M3 in which the progress path is switched by the curved surface 26a passes through the interspace S and flows through the first flow M2 in the mixed region B of the second flow M2
  • the remaining second flow M2 not mixed with the first flow passage M1 may be mixed again and transferred to the heating chamber 10 through the second flow passage 32b.
  • the first guide member 25 and the second guide member 26 are provided at the time of mixing the first flow M1 and the second flow M2 and at the time of switching the progress path of the third flow M3 It is possible to minimize the flow loss of molten aluminum melt M that can be generated.
  • the aluminum melting furnace 1 does not need to separately provide a molten metal pump capable of additionally providing the molten aluminum to the molten aluminum melt M, and the molten aluminum molten metal M is heated only by the molten metal provided by the stirring impeller 21b, (10) and the dissolution chamber (20). Therefore, the aluminum melting furnace 1 can prevent the molten metal pump from being damaged by the refractory or other constituent fragments constituting the aluminum melting furnace 1, and the installation cost of the molten metal pump can be reduced.
  • the black dross B1 and the spherical black dross B2 are repeatedly lowered and floated by the vortex (V). Therefore, the black dross B1 and the spherical black dross B2 may flow into the heating chamber 10 through the second flow passage 32b during the lifting process.
  • the second flow passage 32b is formed by the stirring impeller 21b and the aluminum melt (not shown) so that the black dross B1 and the spherical black dross B2 do not reach the second flow passage 32b M, respectively, by a predetermined distance.
  • the second flow passage 32b extends from a predetermined third point 32e of the wall 32 located closest to the central axis of the stirring impeller 21b to the stirring impeller (not shown) 21b by a distance L3 of 1.5 times or more and 2.5 times or less of the diameter D of the electrodes 21a, 21b.
  • the second flow passage 32b is formed so that the uppermost portion of the second flow passage 32b is at least 0.5 times the liquid level of the molten aluminum M from the surface of the molten aluminum M May be formed to be located as deep as the distance L4.
  • the black dross B1 and the spherical black dross B2 can not reach the second flow passage 32b so that the black dross B1 and the spherical black dross B2 can not reach the second flow path 32b, It is possible to prevent the loss B2 from flowing into the heating chamber 10 through the second flow passage 32b.
  • the aluminum scrap A is dissolved in the molten aluminum M so that the molten aluminum M is newly produced.
  • the flow rate of the molten aluminum M flowing from the melting chamber 20 into the heating chamber 10 through the second flow passage 32b is dissolved from the heating chamber 10 through the first flow passage 32a Is larger than the flow rate of the molten aluminum (M) flowing into the chamber (20).
  • the second flow path 32b is formed so as to be relatively in contact with the first flow path 32a It is preferable to have a wide cross-sectional area.
  • the second flow passage 32b may have a cross-sectional area that is at least 1.5 times greater than that of the first flow passage 32a.
  • FIG. 7 is a plan view of a melting chamber showing a state in which spherical black dross is suspended on the surface of molten aluminum contained in the melting chamber of Fig.
  • the spherical black dross B2 grown by a predetermined reference diameter is separated from the vortex V to adjust the density of the spherical black dross B2 located at the vortex V to an appropriate level.
  • the reference diameter of the spherical black dross B2 is not particularly limited.
  • aluminum scrap (A) is an aluminum waste can scrap (UBCs scrap)
  • flux F is 47.5 parts by weight of sodium chloride (NaCl), 47.5 parts by weight of potassium chloride (KCl) and potassium aluminum fluoride (KAlF 4 ) 5 parts by weight
  • the reference diameter of the spherical black dross B2 is 2 cm to 5 cm.
  • the dissolution chamber 20 is provided with a separation unit 28 for separating the spherical black dross B2 from the vortex V in order to separate the spherical black dross B2 grown by the reference diameter from the vortex V, As shown in FIG.
  • the separating unit 28 is a separating plate having a shape capable of pulling the spherical black dross B2 floated on the surface of the molten aluminum M from the vortex V And a connecting rod 28b for connecting the separating plate 28a with a driving device (not shown) for moving the separating plate 28a.
  • the driving device is preferably a working equipment provided outside the melting chamber 20, but is not limited thereto.
  • the separation unit 28 As the separation unit 28 is provided as described above, the spherical black dross B2 larger than a predetermined reference value can be pulled away from the vortex V using the separation plate 28a to be separated from the vortex V have. Therefore, the separation unit 28 can prevent the formation efficiency of the spherical black dross B2 from being lowered because the spherical black dross B2 is excessively densely packed in the vortex (V).
  • the present invention is not limited to this.
  • the separation unit 28 may be configured such that the spherical black dross B2 separated from the vortex V is pushed back into the vortex V without being grown by the reference diameter, When the amount of the spherical black dross B2 contained in the black dross B2 is equal to or more than the proper level, the function of discharging the spherical black dross B2 to the outside can also be performed.
  • the molten aluminum melt M contained in the dissolution chamber 20 is covered with the spherical black dross B2 which is detached from the vortex V. [ Therefore, the molten aluminum melt M contained in the melting chamber 20 is shielded from the atmosphere by the spherical black droplets B2 covering the surfaces thereof, and the spherical black droplets B2 are melted in the melting chamber 20 having the open structure, And has a warming effect for the molten aluminum (M) contained in the molten aluminum (M).
  • the heat loss of the molten aluminum M is reduced by the spherical black dross B2, The temperature is raised. Therefore, in the conventional aluminum melting furnace, the temperature of the aluminum molten metal accommodated in the melting chamber is generally about 700 ° C. or less, whereas the temperature of the aluminum molten metal (M) contained in the melting chamber 20 is about 730 ° C. or more ≪ / RTI > Therefore, the aluminum melting furnace 1 can further improve the melting efficiency of the aluminum scrap (A) as compared with the conventional aluminum melting furnace.

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  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
PCT/KR2018/009926 2017-08-28 2018-08-28 알루미늄 용해로 WO2019045419A1 (ko)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021178429A1 (en) * 2020-03-02 2021-09-10 Pyrotek, Inc. Mechanical auger recirculation well
WO2021222505A1 (en) * 2020-04-29 2021-11-04 Novelis Inc. Scrap submergence device and molten metal recycling system
CN115151775A (zh) * 2020-02-25 2022-10-04 诺维尔里斯公司 用于金属炉的多用途泵系统以及相关方法
RU2806567C1 (ru) * 2020-04-29 2023-11-01 Новелис Инк. Устройство для погружения лома и для смешивания расплавленного металла в печи и система переработки расплавленного металла

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102498556B1 (ko) 2022-07-15 2023-02-10 (주)태연금속 알루미늄 잉곳 제조용 융해로

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05214457A (ja) * 1992-01-31 1993-08-24 Sanken Sangyo Kk 循環型非鉄金属屑溶解炉
JPH07301490A (ja) * 1994-05-09 1995-11-14 Moruganaito Carbon Kk 溶解炉
KR20060072803A (ko) * 2004-12-23 2006-06-28 재단법인 포항산업과학연구원 금속 칩의 급속 침강장치 및 이를 구비하는 고효율알루미늄 용해로
KR20140014588A (ko) * 2012-07-25 2014-02-06 주식회사 큐빅스 고효율 알루미늄 전기용해로 제어장치
KR20160107031A (ko) * 2015-03-03 2016-09-13 윤수현 알루미늄 용해로

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002958A1 (en) * 1982-02-23 1983-09-01 Claxton, Raymond, J. Method and apparatus for submerging, entraining, melting and circulating metal charge in molten media

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05214457A (ja) * 1992-01-31 1993-08-24 Sanken Sangyo Kk 循環型非鉄金属屑溶解炉
JPH07301490A (ja) * 1994-05-09 1995-11-14 Moruganaito Carbon Kk 溶解炉
KR20060072803A (ko) * 2004-12-23 2006-06-28 재단법인 포항산업과학연구원 금속 칩의 급속 침강장치 및 이를 구비하는 고효율알루미늄 용해로
KR20140014588A (ko) * 2012-07-25 2014-02-06 주식회사 큐빅스 고효율 알루미늄 전기용해로 제어장치
KR20160107031A (ko) * 2015-03-03 2016-09-13 윤수현 알루미늄 용해로

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115151775A (zh) * 2020-02-25 2022-10-04 诺维尔里斯公司 用于金属炉的多用途泵系统以及相关方法
WO2021178429A1 (en) * 2020-03-02 2021-09-10 Pyrotek, Inc. Mechanical auger recirculation well
WO2021222505A1 (en) * 2020-04-29 2021-11-04 Novelis Inc. Scrap submergence device and molten metal recycling system
CN115461587A (zh) * 2020-04-29 2022-12-09 诺维尔里斯公司 废料浸没装置及熔融金属回收系统
JP2023535244A (ja) * 2020-04-29 2023-08-17 ノベリス・インコーポレイテッド スクラップ浸漬装置及び関連プロセス
RU2806567C1 (ru) * 2020-04-29 2023-11-01 Новелис Инк. Устройство для погружения лома и для смешивания расплавленного металла в печи и система переработки расплавленного металла
KR20240096725A (ko) 2020-04-29 2024-06-26 노벨리스 인크. 폐기물 침강 장치 및 관련 공정
JP7559085B2 (ja) 2020-04-29 2024-10-01 ノベリス・インコーポレイテッド スクラップ浸漬装置及び関連プロセス

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