Aluminum ash separation device for molten aluminum production

Abstract

The invention relates to the technical field of molten aluminum production, and particularly discloses an aluminum ash separation device for molten aluminum production. The main stirring blade rotates at a high speed to generate centrifugal force to throw aluminum ash to the side wall from the pot bottom, and the auxiliary stirring blade conducts secondary shearing on the aluminum ash accumulated on the side wall through rotation in the revolution process and moves up and down to break a static accumulation layer of the aluminum ash on the side wall. The composite motion mode effectively eliminates a stirring dead zone near an auxiliary stirring shaft in traditional equipment, so that aluminum ash particles are subjected to dynamic shearing force in the vertical direction and the circumferential direction, and aluminum liquid drops wrapped in aluminum ash are forced to sink and separate. Therefore, the aluminum ash accumulation amount is greatly reduced, the aluminum liquid residual rate is greatly reduced, the formation of an aluminum oxide hard shell can be inhibited by continuous scraping of the auxiliary stirring blades on the pot wall, and the metal recovery rate is improved.

Description

Technical Field

[0001] This application relates to the technical field of aluminum liquid production, and particularly to an aluminum ash separation device for aluminum liquid production. Background Art

[0002] As a core basic material in modern industry, aluminum liquid is widely used in fields such as aerospace, automotive manufacturing, building profiles, and electronic devices. It is prepared by melting aluminum ingots or recycled aluminum materials and is the initial raw material for aluminum alloy casting, die-casting, and continuous rolling processes. However, during the melting, transfer, and pouring processes of aluminum liquid, the surface continuously contacts air, leading to oxidation reactions and generating a large amount of aluminum ash containing metallic aluminum, aluminum oxide, and salt slag. According to statistics, every 1 ton of aluminum liquid produced will generate 30 - 50 kg of aluminum ash, which contains approximately 10% - 30% of unreacted metallic aluminum particles. Directly discarding it will cause huge resource waste and environmental burden. Therefore, the efficient separation of aluminum ash and the recovery of metallic aluminum have become an essential key link in aluminum industrial production.

[0003] In the aluminum liquid production process, aluminum ash separation is mainly achieved through a high-temperature frying process. Specifically, the aluminum ash is put into the heating pot body of a frying machine. The heating pot body is equipped with a main stirring blade and a secondary stirring blade. At a temperature of 650°C - 800°C, the main stirring blade rotates at a high speed to throw the aluminum ash upward from the bottom of the pot, causing the molten aluminum liquid and the solid aluminum ash to stratify under the action of gravity. The secondary stirring blade rotates slowly along the inner wall of the pot body, and the aluminum ash is pushed towards the slag discharge port through a scraper. During this process, the main stirring blade centrifugally throws the aluminum ash from the bottom of the pot towards the side wall, and the secondary stirring blade carries the aluminum ash to move circumferentially.

[0004] However, the structural design of the existing frying machine leads to an irreversible physical defect in the movement trajectory of aluminum ash: the centrifugal force generated by the main stirring blade continuously throws the aluminum ash towards the pot wall, and the circumferential scraping action of the secondary stirring blade further exacerbates the accumulation of aluminum ash on the windward side of the scraper. In this area, due to the lack of vertical stirring shear force, a stable static accumulation structure is formed between aluminum ash particles, blocking the sinking path of metallic aluminum droplets. More seriously, the rigid scraper of the secondary stirring blade and the gap between the pot wall cannot produce a secondary crushing effect on the accumulated aluminum ash, resulting in a large number of micron-sized aluminum liquid droplets being wrapped in the pores of the aluminum ash. After the "aluminum ash - aluminum liquid inclusion" is discharged through the slag discharge port, additional processes such as crushing and screening are required for recovery, greatly increasing the production cost. In addition, the aluminum ash in the accumulation area is oxidized more severely due to long-term retention, generating more difficult-to-treat Al2O3 hard shells, further reducing the metal recovery rate.

[0005] Therefore, how to eliminate the stirring dead angle and achieve full-area dynamic separation of aluminum ash has become the core technical challenge in the upgrading of aluminum liquid production equipment. Summary of the Invention

[0006] In order to solve the problems of high aluminum liquid residual rate due to stirring dead zone in the existing ash roasting machine, low separation efficiency caused by aluminum ash accumulation and increased oxidation, etc., the present application provides an aluminum liquid production aluminum ash separation device.

[0007] The present application provides an aluminum ash separation device for aluminum liquid production, which adopts the following technical solution: A device for separating aluminum ash from aluminum liquid production, comprising a mounting frame, a wok movably mounted on the mounting frame, a main stirring blade and an auxiliary stirring blade mounted in the wok, the end of the main stirring blade extending to the bottom of the wok, the auxiliary stirring blades being arranged in a plurality of groups, the ends of the auxiliary stirring blades being uniformly and spacedly arranged on the inner side wall of the wok along the circumferential direction; The mounting frame is provided with a mixing and stirring mechanism, which can drive the main stirring blade to rotate, and can drive each of the auxiliary stirring blades to rotate and revolve around the main stirring blade. The mounting frame is also provided with a toggle mechanism, which can be used to make each of the auxiliary stirring blades move back and forth up and down along the side wall of the wok when revolving.

[0008] By adopting the above technical solution, the main stirring blade rotates at high speed to generate centrifugal force to throw aluminum ash from the bottom of the pot to the side wall, while the auxiliary stirring blade performs secondary shearing on the aluminum ash accumulated on the side wall by rotating during the revolution, and moves up and down to break the static accumulation layer of aluminum ash on the side wall. This composite motion mode effectively eliminates the stirring dead zone near the auxiliary stirring shaft in traditional equipment, so that the aluminum ash particles are subjected to dynamic shear force in both the vertical and circumferential directions, forcing the aluminum droplets wrapped in the aluminum ash to sink and separate. As a result, the accumulation of aluminum ash is greatly reduced, the residual rate of aluminum liquid is greatly reduced, and the continuous scraping of the auxiliary stirring blade on the pot wall can inhibit the formation of alumina hard shell, and the metal recovery rate is improved.

[0009] Optionally, the mixing and stirring mechanism includes a driving member, a main rotating shaft, a sun gear, a planetary gear, a planetary carrier, a gear ring, a secondary rotating shaft, a coupling and a supporting rotating shaft, the driving member is mounted on the mounting frame and is located above the frying pan, the two ends of the main rotating shaft are coaxially fixed with the output end of the driving member and the main stirring blade, the sun gear is coaxially fixed on the main rotating shaft, a plurality of groups of planetary gears are provided corresponding to each of the secondary stirring blades, the planetary carrier is rotatably mounted on the main rotating shaft, each of the planetary gears is rotatably mounted on the end of the planetary carrier and is respectively meshed with the sun gear, the gear ring is fixed on the mounting frame, and the inner wall is provided with an annular tooth surface, and each of the planetary gears is meshed with the annular tooth surface of the gear ring; The auxiliary shafts are provided with multiple groups corresponding to the planetary gears, and each of the auxiliary shafts is coaxially fixed with the corresponding planetary gear. The couplings and support shafts are provided with multiple groups corresponding to the auxiliary shafts. Each coupling transmission-connects one end of the support shaft with the end of the auxiliary shaft away from the corresponding planetary gear, and one end of each support shaft away from the corresponding coupling is coaxially fixed with the auxiliary stirring blade.

[0010] By adopting the above technical solution, the sun gear rotates with the main shaft to drive the planetary gear to rotate, and the meshing constraint between the planet carrier and the ring gear causes the planetary gear to revolve around the main shaft, forming a constant ratio differential motion. The motion of the planetary gear is transmitted to the auxiliary stirring blade through the coupling and the support shaft, so that the speed of its rotation and the speed of its revolution form a speed difference, generating a dynamic stirring trajectory. This differential motion causes the aluminum ash to be subjected to high-frequency alternating shear force at the pot wall, and the aluminum droplets in the pores of the aluminum ash are peeled off due to the difference in inertia.

[0011] Ultimately, the stirring coverage area is increased, the crushing rate of aluminum ash particles is improved, and the load-balanced design of the planetary gear system improves transmission stability, greatly extending the continuous operation life of the equipment.

[0012] Optionally, the toggle mechanism includes an upper shell and a lower shell, the upper shell is installed at the bottom of the gear ring and is sleeved on the outside of the main stirring blade, the lower shell is sleeved and installed on the main stirring blade, the lower end of the upper shell and the upper end of the lower shell are both arranged in a wavy shape, an annular guide channel is enclosed between the upper shell and the lower shell, and each of the auxiliary stirring blades passes through the guide channel.

[0013] By adopting the above technical solution, the wavy ends of the upper shell and the lower shell form a periodically undulating guide track. The auxiliary stirring blade is restricted by the track to produce regular up and down displacement during revolution. When the auxiliary stirring blade moves along the pot wall to the wave crest position, its scraper cuts into the upper part of the aluminum ash accumulation layer; when it moves to the wave trough, it penetrates into the bottom of the accumulation layer. This undulating movement forms a "ploughing effect" on the aluminum ash layer, which not only destroys the adsorption force between aluminum ash particles, but also promotes aluminum droplets to seep out of the pores through vertical extrusion, thereby increasing the porosity of the aluminum ash layer on the side wall and accelerating the sinking speed of aluminum droplets.

[0014] Optionally, each of the supporting shafts is arranged in sections and an elastic member is arranged between adjacent sections, and the elastic member is used to elastically abut the corresponding auxiliary stirring shaft against the inner wall of the wok.

[0015] By adopting the above technical solution, the elastic member between the segmented support rotating shafts can absorb the reaction force generated by the accumulation of aluminum ash, so that the secondary stirring blades always fit the pot wall with an appropriate contact force. When encountering large particle agglomerates, the elastic member allows the scraper of the secondary stirring shaft to retreat briefly to avoid hard collisions, and then quickly reset under the action of the elastic restoring force, realizing the progressive crushing of the agglomerates. This design breaks through the problems of easy jamming or fast wear of traditional rigid scrapers, improves the scraper life, and improves the crushing efficiency of large-particle aluminum ash agglomerates.

[0016] Optionally, a universal adjustment mechanism is provided between the top of the frying pan and the mounting frame, and a deflection mechanism for deflecting the bottom of the frying pan in the circumferential direction is provided on the mounting frame below the frying pan.

[0017] By adopting the above technical solution, the universal adjustment mechanism allows the frying pan to be inclined in multiple directions in three-dimensional space, and the deflection mechanism forms a directional flow of aluminum ash under the action of gravity by periodically lifting the bottom of the frying pan. When the frying pan is inclined towards the slag discharge port side, the aluminum ash scattered by the main stirring blade forms a spiral motion trajectory in the inclined pot body, extending the residence time of the aluminum ash; at the same time, the dynamic adjustment of the inclination angle forces the aluminum ash layer to generate shear slip, destroying its static accumulation structure and improving the frying and separation effect of the aluminum ash.

[0018] Optionally, the universal adjustment mechanism includes a universal adjustment seat, a first adjustment rotating shaft and a second adjustment rotating shaft. The universal adjustment seat is annularly sleeved on the outer side of the frying pan near the top. There are two groups of the first adjustment rotating shafts. One ends of the two first adjustment rotating shafts are symmetrically fixed on the outer wall of the frying pan, and the other ends are rotatably installed on the inner wall of the universal adjustment seat. There are two groups of the second adjustment rotating shafts. One ends of the two second adjustment rotating shafts are symmetrically fixed on the outer wall of the universal adjustment seat, and the other ends are rotatably installed on the corresponding mounting frame.

[0019] By adopting the above technical solution, the first adjustment rotating shaft and the second adjustment rotating shaft respectively control the longitudinal and transverse inclination angles of the frying pan. Through the coordinated movement of the orthogonal hinge points, the frying pan maintains balanced stress when tilting in any direction.

[0020] Optionally, the deflection mechanism includes a power member, a main gear, a driven tooth ring, a fixing ring and a jacking rod. The power member is installed on the mounting frame. The main gear is coaxially fixed on the output end of the power member. The driven tooth ring is rotatably installed on the mounting frame. The external teeth of the main gear and the driven tooth ring are meshed with each other. The fixing ring is fixedly sleeved on the outer wall of the frying pan near the bottom, and one end of the fixing ring close to the driven tooth ring is arranged in a wave shape; The jacking rod is fixed on one side of the driven tooth ring close to the fixing ring, and the upper end of the jacking rod can jack up the frying pan along the wave-shaped end of the fixing ring driven by the driven tooth ring.

[0021] By adopting the above technical solution, the power component drives the main gear to drive the driven gear ring to rotate. The jacking rod fixed on the driven gear ring slides along the surface of the wavy fixed ring, converting the rotational motion into the vertical displacement of the jacking rod. The jacking action generates an instantaneous acceleration at the bottom of the frying pan, forcing relative displacement between the aluminum ash particles, destroying their adsorption structure, and greatly reducing the blockage rate of the slag discharge port.

[0022] Optionally, a sleeve is sleeved outside the frying pan near the bottom. The sleeve is fixedly installed on the mounting frame, and the driven gear is sleeved on the outer wall of the sleeve.

[0023] By adopting the above technical solution, the sleeve completely wraps the bottom of the frying pan and the driven gear ring, forming a closed cavity to isolate the intrusion of external aluminum ash dust. At the same time, the gap between the inner wall of the sleeve and the outer wall of the frying pan allows thermal expansion and deformation, avoiding metal jamming at high temperatures.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: The main stirring blade rotates at high speed to generate centrifugal force, throwing the aluminum ash from the bottom of the pan to the side wall. While the secondary stirring blade performs secondary shearing on the aluminum ash accumulated on the side wall through its own rotation during the revolution process, and at the same time moves up and down to break the static accumulation layer of the aluminum ash on the side wall. This composite motion mode effectively eliminates the stirring dead zone near the secondary stirring shaft in traditional equipment, enabling the aluminum ash particles to be dynamically sheared in both the vertical and circumferential directions, forcing the aluminum droplets wrapped in the aluminum ash to sink and separate, thereby greatly reducing the accumulation amount of aluminum ash and the residual rate of aluminum liquid. Moreover, the continuous scraping of the secondary stirring blade on the pot wall can inhibit the formation of the aluminum oxide hard shell, and the metal recovery rate is improved; The wavy ends of the upper shell and the lower shell form a periodically undulating guiding track. The secondary stirring blade generates regular up and down displacements restricted by the track during the revolution. When the secondary stirring blade moves along the pot wall to the peak position of the wave, its scraper cuts into the upper part of the aluminum ash accumulation layer; when it moves to the trough, it penetrates to the bottom of the accumulation layer. This undulating motion forms a "ploughing effect" on the aluminum ash layer, which not only destroys the adsorption force between the aluminum ash particles, but also promotes the seepage of aluminum droplets from the pores through extrusion in the vertical direction, increasing the porosity of the aluminum ash layer on the side wall and accelerating the sinking speed of the aluminum droplets; The elastic member between the segmented support rotating shafts can absorb the reaction force generated by the accumulation of aluminum ash, enabling the secondary stirring blade to always fit the pot wall with an appropriate contact force. When encountering large particle agglomerates, the elastic member allows the scraper of the secondary stirring shaft to retreat briefly to avoid hard collision, and then quickly reset under the action of the elastic restoring force, realizing the progressive crushing of the agglomerates. This design breaks through the problems of easy jamming or fast wear of traditional rigid scrapers, improves the scraper life, and increases the crushing efficiency of large particle size aluminum ash agglomerates; The universal adjustment mechanism allows the wok to tilt in multiple directions in three-dimensional space, and the deflection mechanism periodically lifts the bottom of the wok to make the aluminum ash form a directional flow under the action of gravity. When the wok tilts toward the slag discharge port, the aluminum ash thrown by the main stirring blade forms a spiral motion trajectory in the tilted wok body, extending the residence time of the aluminum ash; at the same time, the dynamic adjustment of the tilt angle forces the aluminum ash layer to produce shear slip, destroying its static stacking structure and improving the frying and separation effect of the aluminum ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of an aluminum ash separation device for aluminum liquid production in an embodiment of the present application; Figure 2 yes Figure 1 A cross-sectional view of the aluminum ash separation device in the production of Chalco; Figure 3 yes Figure 1 A schematic diagram of part of the structure of the wok in the middle; Figure 4 yes Figure 3 Schematic diagram of the structure inside the wok; Figure 5 yes Figure 4 A schematic diagram of the structure of the mixing and stirring mechanism; Figure 6 yes Figure 2 The structural diagram of the universal adjustment mechanism; Figure 7 yes Figure 3 Schematic diagram of some structures in .

[0027] Figure numerals: 1. mounting frame; 11. frying pan; 12. feed hopper; 13. main stirring blade; 14. auxiliary stirring blade; 2. mixing and stirring mechanism; 21. driving member; 22. main rotating shaft; 23. sun gear; 24. planetary gear; 25. planetary carrier; 26. gear ring; 27. auxiliary rotating shaft; 28. coupling; 29. supporting rotating shaft; 3. toggle mechanism; 31. upper shell; 32. lower shell; 33. guide track; 4. universal adjustment mechanism; 41. universal adjustment seat; 42. first adjustment rotating shaft; 43. second adjustment rotating shaft; 5. deflection mechanism; 51. power member; 52. main gear; 53. driven gear ring; 54. fixing ring; 55. lifting rod; 56. sleeve; 6. pressure sensor; 7. mounting ring; 8. electromagnet. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1-7 , further details of this application are given.

[0029] The embodiment of the present application discloses a device for separating aluminum ash from aluminum liquid production.

[0030] Aluminum ash separation device for aluminum liquid production, referring to Figure 1 and Figure 2 , including a mounting frame 1, on which a wok 11 is movably arranged, a feed hopper 12 is arranged above the wok 11, a liquid outlet hole for discharging liquid aluminum is opened at the bottom of the wok 11, a main stirring blade 13 and an auxiliary stirring blade 14 are arranged in the wok 11, the end of the main stirring blade 13 extends to the bottom of the wok 11, and the auxiliary stirring blade 14 is provided in multiple groups. In this embodiment, four groups of auxiliary stirring blades 14 are provided. In other embodiments, 3 groups, 5 groups, etc. can also be provided. The ends of the auxiliary stirring blades 14 are evenly and spacedly arranged on the inner wall of the wok 11 along the circumferential direction.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A mixing and stirring mechanism 2 is provided on the mounting frame 1, and the mixing and stirring mechanism 2 can drive the main stirring blade 13 to rotate, and can drive each auxiliary stirring blade 14 to rotate and revolve around the main stirring blade 13. A toggle mechanism 3 is also provided on the mounting frame 1, and the toggle mechanism 3 can be used to make each auxiliary stirring blade 14 move back and forth up and down along the side wall of the wok 11 when revolving.

[0032] In order to make the separation of aluminum ash and aluminum liquid more thorough in the wok 11, refer to Figure 1 and Figure 2 A universal adjustment mechanism 4 is provided between the top of the wok 11 and the mounting frame 1, and a deflection mechanism 5 for deflecting the bottom of the wok 11 in a circumferential direction is provided on the mounting frame 1 below the wok 11.

[0033] The main stirring blade 13 rotates at high speed to generate centrifugal force to throw the aluminum ash from the bottom of the pot to the side wall, while the auxiliary stirring blade 14 performs secondary shearing on the aluminum ash accumulated on the side wall by rotating during the revolution, and at the same time moves up and down to break the static accumulation layer of the aluminum ash on the side wall.

[0034] This composite motion mode effectively eliminates the stirring dead zone near the auxiliary stirring shaft in traditional equipment, so that the aluminum ash particles are subjected to dynamic shear force in both the vertical and circumferential directions, forcing the aluminum droplets wrapped in the aluminum ash to sink and separate. As a result, the aluminum ash accumulation is greatly reduced, the aluminum liquid residual rate is greatly reduced, and the continuous scraping of the auxiliary stirring blade 14 on the pot wall can inhibit the formation of aluminum oxide hard shells, thereby improving the metal recovery rate.

[0035] The universal adjustment mechanism 4 allows the frying pan 11 to be tilted in multiple directions in a three-dimensional space, while the deflection mechanism 5 forms a directional flow of the aluminum ash under the action of gravity by periodically jacking up the bottom of the frying pan 11.

[0036] When the frying pan 11 is tilted towards the slag discharge port side, the aluminum ash scattered by the main stirring blade 13 forms a spiral motion trajectory in the tilted pot body, extending the residence time of the aluminum ash. At the same time, the dynamic adjustment of the tilt angle forces the aluminum ash layer to generate shear slip, destroying its static accumulation structure and improving the frying and separation effect of the aluminum ash.

[0037] Refer to Figure 3 and Figure 4 As shown in FIGS. and, the mixing and stirring mechanism 2 includes a driving member 21, a main rotating shaft 22, a sun gear 23, a planetary gear 24, a planetary carrier 25, a ring gear 26, a secondary rotating shaft 27, a coupling 28, and a support rotating shaft 29. The driving member 21 is installed on the mounting frame 1 and is located above the frying pan 11. The driving member 21 uses a stepping motor. In other embodiments, a reduction motor or a servo motor can also be used, etc. The two ends of the main rotating shaft 22 are coaxially fixed with the output end of the driving member 21 and the main stirring blade 13 respectively. The sun gear 23 is coaxially fixed on the main rotating shaft 22. A plurality of groups of planetary gears 24 are provided corresponding to each secondary stirring blade 14. The planetary carrier 25 is rotatably installed on the main rotating shaft 22. Each planetary gear 24 is rotatably installed at the end of the planetary carrier 25 and meshes with the sun gear 23 respectively. The ring gear 26 is fixed on the mounting frame 1, and the inner wall is provided with an annular tooth surface. Each planetary gear 24 meshes with the annular tooth surface of the ring gear 26.

[0038] Refer to Figure 4 and Figure 5 As shown in FIGS. and, a plurality of groups of secondary rotating shafts 27 are provided corresponding to the planetary gears 24, and each secondary rotating shaft 27 is coaxially fixed with the corresponding planetary gear 24. A plurality of groups of couplings 28 and support rotating shafts 29 are provided corresponding to the secondary rotating shafts 27. Each coupling 28 drives and connects one end of the support rotating shaft 29 with the end of the secondary rotating shaft 27 far from the corresponding planetary gear 24. The end of each support rotating shaft 29 far from the corresponding coupling 28 is coaxially fixed with the secondary stirring blade 14.

[0039] The sun gear 23 rotates with the main rotating shaft 22 to drive the planetary gear 24 to rotate self - axially. At the same time, the meshing constraint between the planetary carrier 25 and the ring gear 26 causes the planetary gear 24 to revolve around the main rotating shaft 22, forming a fixed - ratio differential motion.

[0040] The motion of the planetary gear 24 is transmitted to the secondary stirring blade 14 through the coupling 28 and the support rotating shaft 29, so that the self - rotation speed and the revolution speed form a speed difference, generating a dynamic stirring trajectory. This differential motion causes the aluminum ash to be subjected to a high - frequency alternating shear force at the pot wall, and the aluminum droplets in the pores of the aluminum ash are stripped due to inertial differences.

[0041] Ultimately, the stirring coverage area is increased, the crushing rate of aluminum ash particles is improved, and the load-balanced design of the planetary gear system improves transmission stability, greatly extending the continuous operation life of the equipment.

[0042] Reference Figure 2 and Figure 4 The toggle mechanism 3 includes an upper shell 31 and a lower shell 32. The upper shell 31 is installed at the bottom of the gear ring 26 and is sleeved on the outside of the main stirring blade 13. The lower shell 32 is sleeved and installed on the main stirring blade 13. The lower end of the upper shell 31 and the upper end of the lower shell 32 are both arranged in a wavy shape. An annular guide channel is surrounded by the upper shell 31 and the lower shell 32, and each auxiliary stirring blade 14 passes through the guide channel.

[0043] The wavy ends of the upper shell 31 and the lower shell 32 form a periodically undulating guide track 33. The auxiliary stirring blade 14 is restricted by the track and produces regular up and down displacement during revolution. When the auxiliary stirring blade 14 moves along the pot wall to the crest position, its scraper cuts into the upper part of the aluminum ash accumulation layer; when it moves to the trough, it penetrates into the bottom of the accumulation layer.

[0044] This undulating movement forms a "ploughing effect" on the aluminum ash layer, which not only destroys the adsorption force between the aluminum ash particles, but also causes aluminum droplets to seep out of the pores through vertical extrusion, thereby increasing the porosity of the side wall aluminum ash layer and accelerating the sinking speed of the aluminum droplets.

[0045] In order to reduce the mixture in the wok 11 from entering the guide track 33, high temperature resistant soft materials are provided at the wavy ends of the upper shell 31 and the lower shell 32 to block the mixture and ensure that the movement of the auxiliary stirring blade 14 is not blocked.

[0046] In other feasible embodiments, the toggle mechanism 3 can also be configured as: a spiral groove is opened on the main shaft 22, an outer protective sleeve is provided on the sliding sealing sleeve outside the main shaft 22 where the spiral groove is located, and the sealing part between the outer protective sleeve and the main shaft 22 is coated with high-temperature resistant grease, and an insertion rod is fixed on the inner wall of the outer protective sleeve, and the end of the insertion rod extends into the spiral groove, and a plurality of groups of support rods are provided on the outer wall of the outer protective sleeve corresponding to each support shaft 29, one end of the support rod is hinged to the outside of the outer protective sleeve, and the other end is hinged to the corresponding support shaft 29.

[0047] When the main shaft 22 rotates, the outer casing will be driven to move upward or downward along the main shaft 22, so that the support shaft 29 is opened away from the main shaft 22 or closed close to the main shaft 22. If the effect of the first embodiment of the toggle mechanism 3 is to be achieved, the direction of the driving member 21 needs to be repeatedly adjusted. Since the first embodiment of the toggle mechanism 3 better meets the effect to be achieved in this embodiment, the toggle mechanism 3 selects the structure of the first embodiment.

[0048] Each supporting rotating shaft 29 is arranged in sections, and an elastic member is arranged between adjacent sections. The elastic member is used to elastically abut the corresponding auxiliary stirring shaft against the inner side wall of the frying pan 11, and the elastic member adopts a damping spring. The elastic members between the sectional supporting rotating shafts 29 can absorb the reaction force generated by the accumulation of aluminum ash, so that the auxiliary stirring blades 14 always fit the pot wall with an appropriate contact force.

[0049] When encountering large particle agglomerates, the elastic member allows the scraper of the auxiliary stirring shaft to retreat briefly to avoid hard collision, and then quickly reset under the action of the elastic restoring force to achieve progressive crushing of the agglomerates. This design breaks through the problems of easy jamming or fast wear of traditional rigid scrapers, improves the service life of the scraper, and improves the crushing efficiency of large-particle aluminum ash agglomerates.

[0050] Refer to Figure 2 and Figure 6 As shown in FIGS. and, the universal adjustment mechanism 4 includes a universal adjustment seat 41, a first adjustment rotating shaft 42 and a second adjustment rotating shaft 43. The universal adjustment seat 41 is sleeved on the outer side of the frying pan 11 near the top in a ring shape. There are two groups of first adjustment rotating shafts 42. One ends of the two first adjustment rotating shafts 42 are symmetrically fixed on the outer wall of the frying pan 11, and the other ends are rotatably installed on the inner wall of the universal adjustment seat 41. There are two groups of second adjustment rotating shafts 43. One ends of the two second adjustment rotating shafts 43 are symmetrically fixed on the outer wall of the universal adjustment seat 41, and the other ends are rotatably installed on the corresponding mounting frame 1. The first adjustment rotating shaft 42 and the second adjustment rotating shaft 43 respectively control the longitudinal and transverse tilting angles of the frying pan 11. Through the coordinated movement of the orthogonal hinge points, the frying pan 11 maintains balanced force when tilting in any direction.

[0051] Refer to Figure 1 and Figure 3 As shown in FIGS. and, the deflection mechanism 5 includes a power member 51, a main gear 52, a driven gear ring 53, a fixed ring 54 and a jacking rod 55. The power member 51 is installed on the mounting frame 1. The power member 51 adopts a reduction motor. In other embodiments, a stepping motor, a servo motor, etc. can also be adopted. The main gear 52 is coaxially fixed on the output end of the power member 51. The driven gear ring 53 is rotatably installed on the mounting frame 1. The external teeth of the main gear 52 and the driven gear ring 53 are meshed with each other. The fixed ring 54 is fixedly sleeved on the outer wall of the frying pan 11 near the bottom, and one end of the fixed ring 54 close to the driven gear ring 53 is arranged in a wave shape. The jacking rod 55 is fixed on the side of the driven gear ring 53 close to the fixed ring 54, and the upper end of the jacking rod 55 can jack up the frying pan 11 along the wave-shaped end of the fixed ring 54 driven by the driven gear ring 53.

[0052] The power component 51 drives the main gear 52 to drive the driven gear ring 53 to rotate. The jacking rod 55 fixed to the driven gear ring 53 slides along the surface of the wavy fixed ring 54, converting the rotational motion into the vertical displacement of the jacking rod 55. The jacking action generates an instantaneous acceleration at the bottom of the frying pan 11, forcing relative displacement between the aluminum ash particles, destroying their adsorption structure, and greatly reducing the blockage rate of the slag discharge port.

[0053] Referring to Figure 2 and Figure 3 , a sleeve 56 is provided outside the frying pan 11 near the bottom. The sleeve 56 is fixedly installed on the mounting bracket 1. The driven gear is sleeved and installed on the outer wall of the sleeve 56. The sleeve 56 completely wraps the bottom of the frying pan 11 and the driven gear ring 53, forming a closed cavity to isolate the intrusion of external aluminum ash dust. At the same time, the gap between the inner wall of the sleeve 56 and the outer wall of the frying pan 11 allows thermal expansion and deformation, avoiding metal jamming at high temperatures.

[0054] Furthermore, although the deflection of the frying pan 11 will drive the internal aluminum ash to be stir-fried more evenly and make the aluminum ash at the top of the frying pan 11 fall back to the bottom of the frying pan 11 for secondary frying, during this process, the liquid silver in the aluminum ash will also deviate from the liquid outlet hole following the deflection of the frying pan 1. Therefore, referring to Figure 3 and Figure 7 , a plurality of pressure sensors 6 are provided at the respective wavy ends of the fixed ring 54. An installation ring 7 is fixed to the side wall of the frying pan 11 near the liquid outlet hole. A plurality of electromagnets 8 are correspondingly provided on the installation ring for each wave of the fixed ring 54. The electromagnets 8 are made of high-temperature resistant materials. For example, the electromagnetic coil of the electromagnet 8 is replaced with a more high-temperature resistant ceramic insulated silver wire, and a boron nitride coating is applied on the outer layer; Each electromagnet 8 corresponds to a corresponding pressure sensor 6. When the jacking rod 55 passes through each wave, it can press the corresponding pressure sensor 6. At this time, the corresponding electromagnet 8 is controlled to be energized, thereby restricting the reverse movement of the liquid silver flowing in the frying pan 11, so that the liquid silver flowing through the liquid outlet hole and the lower end in the frying pan 11 can be subjected to a reverse restraint force, and even can move in the reverse direction under the action of the restraint force, enabling the liquid silver to be enriched at the liquid outlet hole, realizing better restraint of the liquid silver, and enabling the frying pan 11 to achieve more complete separation of the liquid silver during the deflection process.

[0055] In other scenarios where more refined purification of liquid silver is required, in addition to setting multiple pressure sensors 6 at the respective wavy ends of the fixed ring 54, multiple pressure sensors 6 can also be set on each wavy end wall. Since the lifting rods 55 have different lifting amplitudes for the frying pan 11 at different positions of the wavy shape, more groups of electromagnets 8 can be correspondingly set on the outer wall of the frying pan 11. According to the different lifting degrees, the pressures received by different pressure sensors 6 are different, and the corresponding electromagnets 8 adjust the corresponding intensity, so as to make the inclination of the frying pan 11 match the movement of the liquid silver more precisely, and improve the separation and purification effect of the liquid silver.

[0056] The implementation principle of an aluminum ash separation device for aluminum liquid production in an embodiment of the present application is as follows: The main stirring blades 13 rotate at high speed to generate centrifugal force to throw the aluminum ash from the bottom of the pot to the side wall, while the auxiliary stirring blades 14 perform secondary shearing on the aluminum ash accumulated on the side wall through self-rotation during the revolution process, and at the same time move up and down to break the static accumulation layer of the aluminum ash on the side wall.

[0057] This combined motion mode effectively eliminates the stirring dead zone near the auxiliary stirring shaft in traditional equipment, enables the aluminum ash particles to be subjected to dynamic shear forces in both the vertical and circumferential directions, and forces the aluminum liquid droplets wrapped in the aluminum ash to sink and separate. As a result, the accumulation amount of aluminum ash is greatly reduced, the residual rate of aluminum liquid is greatly decreased, and the continuous scraping of the auxiliary stirring blades 14 on the pot wall can inhibit the formation of an aluminum oxide hard shell, thereby improving the metal recovery rate.

[0058] When the auxiliary stirring blade 14 moves along the pot wall to the peak position, its scraper cuts into the upper part of the aluminum ash accumulation layer; when it moves to the trough, it penetrates to the bottom of the accumulation layer. This undulating motion forms a "plowing effect" on the aluminum ash layer, which not only destroys the adsorption force between aluminum ash particles, but also promotes the seepage of aluminum liquid droplets from the pores through extrusion in the vertical direction, increases the porosity of the aluminum ash layer on the side wall, and accelerates the sinking speed of the aluminum liquid droplets.

[0059] The universal adjustment mechanism 4 allows the frying pan 11 to be inclined in multiple directions in a three-dimensional space, and the deflection mechanism 5 periodically lifts the bottom of the frying pan 11, so that the aluminum ash forms a directional flow under the action of gravity. When the frying pan 11 is inclined towards the slag discharge port side, the aluminum ash thrown by the main stirring blades 13 forms a spiral motion trajectory in the inclined pot body, extending the residence time of the aluminum ash; at the same time, the dynamic adjustment of the inclination angle forces the aluminum ash layer to generate shear slip, destroys its static accumulation structure, and improves the frying and separation effect of the aluminum ash.

[0060] The above are all optional embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An aluminum ash separation device for aluminum liquid production, characterized in that: The invention comprises a mounting frame (1), a wok (11) movably mounted on the mounting frame (1), a main stirring blade (13) and an auxiliary stirring blade (14) mounted in the wok (11), the end of the main stirring blade (13) extending close to the bottom of the wok (11), and a plurality of groups of auxiliary stirring blades (14), the ends of the auxiliary stirring blades (14) being evenly and spacedly arranged on the inner wall of the wok (11) along the circumferential direction; The mounting frame (1) is provided with a mixing and stirring mechanism (2), and the mixing and stirring mechanism (2) can drive the main stirring blade (13) to rotate, and can drive each of the auxiliary stirring blades (14) to rotate and revolve around the main stirring blade (13). The mounting frame (1) is also provided with a toggle mechanism (3), and the toggle mechanism (3) can be used to make each of the auxiliary stirring blades (14) move back and forth up and down along the side wall of the wok (11) when revolving.

2. The aluminum ash separation device for aluminum liquid production according to claim 1, wherein: The mixing and stirring mechanism (2) comprises a driving member (21), a main rotating shaft (22), a sun gear (23), a planetary gear (24), a planetary carrier (25), a gear ring (26), a secondary rotating shaft (27), a coupling (28) and a supporting rotating shaft (29); the driving member (21) is mounted on the mounting frame (1) and is located above the frying pan (11); two ends of the main rotating shaft (22) are coaxially fixed to the output end of the driving member (21) and the main stirring blade (13), respectively; The sun gear (23) is coaxially fixed on the main rotating shaft (22); a plurality of planetary gears (24) are provided corresponding to the auxiliary stirring blades (14); the planetary frame (25) is rotatably mounted on the main rotating shaft (22); each of the planetary gears (24) is rotatably mounted on an end of the planetary frame (25) and is respectively meshed with the sun gear (23); the ring gear (26) is fixed on the mounting frame (1) and has an annular tooth surface on its inner wall; each of the planetary gears (24) is meshed with the annular tooth surface of the ring gear (26); The auxiliary rotating shaft (27) is provided with a plurality of groups corresponding to the planetary gear (24), and each of the auxiliary rotating shafts (27) is coaxially fixed with the corresponding planetary gear (24). The coupling (28) and the supporting shaft (29) are both provided with a plurality of groups corresponding to the auxiliary rotating shaft (27). Each of the couplings (28) drives and connects one end of the supporting shaft (29) with the end of the auxiliary rotating shaft (27) away from the corresponding planetary gear (24), and one end of each of the supporting shafts (29) away from the corresponding coupling (28) is coaxially fixed with the auxiliary stirring blade (14).

3. The aluminum ash separation device for aluminum liquid production according to claim 2, wherein: The toggle mechanism (3) comprises an upper shell (31) and a lower shell (32); the upper shell (31) is mounted on the bottom of the gear ring (26) and sleeved outside the main stirring blade (13); the lower shell (32) is sleeved and mounted on the main stirring blade (13); the lower end of the upper shell (31) and the upper end of the lower shell (32) are both arranged in a wave shape; an annular guide channel is arranged between the upper shell (31) and the lower shell (32), and each of the auxiliary stirring blades (14) passes through the guide channel.

4. The aluminum ash separation device for aluminum liquid production according to claim 3, wherein: Each of the supporting shafts (29) is arranged in sections and an elastic member is arranged between adjacent sections, and the elastic member is used to elastically abut the corresponding auxiliary stirring shaft against the inner wall of the frying pan (11).

5. An aluminum ash separation device for aluminum liquid production according to claim 1, characterized in that: A universal adjustment mechanism (4) is provided between the top of the frying pan (11) and the mounting frame (1), and a deflection mechanism (5) for causing the bottom of the frying pan (11) to deflect in a circumferential direction is provided on the mounting frame (1) below the frying pan (11).

6. The aluminum ash separation device for aluminum liquid production according to claim 5, wherein: The universal adjustment mechanism (4) comprises a universal adjustment seat (41), a first adjustment shaft (42) and a second adjustment shaft (43); the universal adjustment seat (41) is annularly sleeved on the outer side of the frying pan (11) near the top; the first adjustment shaft (42) is provided in two groups, one end of the two first adjustment shafts (42) is symmetrically fixed to the outer wall of the frying pan (11), and the other end is rotatably mounted on the inner wall of the universal adjustment seat (41); the second adjustment shaft (43) is provided in two groups, one end of the two second adjustment shafts (43) is symmetrically fixed to the outer wall of the universal adjustment seat (41), and the other end is rotatably mounted on the corresponding mounting frame (1).

7. An aluminum ash separation device for aluminum liquid production according to claim 5, characterized in that: The deflection mechanism (5) comprises a power member (51), a main gear (52), a driven gear ring (53), a fixing ring (54) and a lifting rod (55); the power member (51) is mounted on the mounting frame (1); the main gear (52) is coaxially fixed to the output end of the power member (51); the driven gear ring (53) is rotatably mounted on the mounting frame (1); the outer teeth of the main gear (52) and the driven gear ring (53) are meshed with each other; the fixing ring (54) is fixedly sleeved on the outer wall of the frying pan (11) near the bottom; and one end of the fixing ring (54) near the driven gear ring (53) is arranged in a wave shape; The lifting rod (55) is fixed to a side of the driven gear ring (53) close to the fixed ring (54), and the upper end of the lifting rod (55) can lift the frying pan (11) along the wavy end of the fixed ring (54) under the drive of the driven gear ring (53).

8. An aluminum ash separation device for aluminum liquid production according to claim 7, characterized in that: The outer cover of the frying pan (11) near the bottom is provided with a sleeve (56), the sleeve (56) is fixedly mounted on the mounting frame (1), and the driven gear is sleeve-mounted on the outer wall of the sleeve (56).

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