Roasting device and method for recycling aluminum ash

Abstract

The invention relates to the field of aluminum ash recycling, in particular to a roasting device and method for recycling aluminum ash. According to the roasting method for recycling the aluminum ash residues, the provided roasting device for recycling the aluminum ash residues is used for conducting roasting treatment on the aluminum ash residues, the roasting furnace is divided into three roasting chambers through the two partition plates, and the three roasting chambers conduct three roasting stages on the aluminum ash residues correspondingly; according to the method, organic matter decomposition treatment work, aluminum powder removal treatment work and chlorine removal treatment work are sequentially completed, after roasting treatment of the aluminum ash residues is completed, the aluminum ash residues have no reactivity, then the aluminum ash residues are subjected to crushing treatment, granulation treatment and screening treatment in sequence and enter a rotary kiln to be roasted, and ceramsite products are obtained. According to the roasting device and method for recycling the aluminum ash residues, the technical problem that when a large amount of fine aluminum powder is left in an existing roasting furnace, the serious explosion danger phenomenon occurs, and the life safety of workers on a production line is affected is solved.

Description

Technical Field

[0001] The present invention relates to the field of aluminum ash residue recycling, and particularly to a roasting device and method for recycling aluminum ash residue. Background Art

[0002] In the resource recycling process of aluminum ash residue, roasting is one of the core treatment links to achieve the recycling of aluminum resources and the removal of harmful substances. However, during the roasting process, some unreacted metallic aluminum will form fine aluminum powder due to high-temperature volatilization or mechanical friction. The particle size is usually less than 100 μm. The escape of these fine aluminum powders may cause multiple hazards. Fine aluminum powder has a very high specific surface area. When it reaches a certain concentration in the air and encounters a high-temperature heat source exceeding 500 °C, it is extremely easy to cause an explosion. In addition, the fine aluminum powder escaping into the external environment can adsorb harmful components such as fluorides and chlorides to form PM2.5 inhalable particulate matter, polluting the surrounding air quality. In the existing aluminum ash residue resource recycling process, only the fine aluminum powder is collected at the smoke outlet of the roasting furnace. When a large amount of fine aluminum powder remains in the roasting furnace, a serious explosion hazard will occur, affecting the lives of the production line staff. Summary of the Invention

[0003] In order to overcome the drawback that when a large amount of fine aluminum powder remains in the existing roasting furnace, a serious explosion hazard will occur, affecting the lives of the production line staff, the present invention provides a roasting device and method for recycling aluminum ash residue.

[0004] Technical Solution: A roasting device for recycling aluminum ash residue includes a rotary drive group frame, a roasting furnace, a feed hopper, a discharge hopper, a central shaft, a suction hole structure, a partition plate, a notch structure, a second gear, a self-locking motor, a third gear, a burner, a suction pipe, a filter screen, and a ceramic brush. The roasting furnace is rotatably connected to the rotary drive group frame, and the roasting furnace is set to be inclined downward toward the discharge port. The feed hopper and the discharge hopper are sequentially connected to the rotary drive group frame. The feed hopper and the discharge hopper are respectively rotatably connected to the roasting furnace. A central shaft is rotatably connected between the feed hopper and the discharge hopper. Two partition plates for dividing the interior of the roasting furnace into three roasting chambers are fixedly connected to the central shaft. The partition plates are rotatably connected to the roasting furnace. Each of the two partition plates is provided with a notch structure that is offset from each other. A second gear is fixedly connected to the central shaft. A self-locking motor is installed on the discharge hopper. The output shaft of the self-locking motor is fixedly connected to a third gear. The third gear meshes with the second gear. A plurality of burners are installed on the partition plates. A cavity structure is provided inside the central shaft, and a suction pipe communicating with the cavity structure is fixedly connected to the central shaft. A plurality of suction hole structures communicating with the cavity structure are provided on the central shaft. A filter screen is fixedly connected to each suction hole structure. At least two ceramic brushes closely attached to the area of the central shaft provided with the suction hole structure are fixedly connected inside the roasting furnace.

[0005] Preferably, a number of turning plates are provided on the inner wall of the roasting furnace.

[0006] Preferably, a number of thorn structures are provided on the surface of each turning plate.

[0007] Preferably, a first fixing plate and a second fixing plate for blocking fine aluminum powder escaping outwards are successively provided on the central axis, and the first fixing plate and the second fixing plate are respectively located in the feed hopper and the discharge hopper.

[0008] Preferably, an inert gas delivery pipe is fixedly connected to each of the first fixing plate and the second fixing plate.

[0009] Preferably, a number of ventilation hole structures penetrating in the left-right direction are provided on each of the two partition plates.

[0010] Preferably, the first fixing plate and the second fixing plate are made of plug plate materials, and the first fixing plate and the second fixing plate are respectively used to block the feed hopper and the discharge hopper; the first fixing plate and the second fixing plate are jointly slidably connected to the central axis; an electric control telescopic push rod for controlling the movement of the first fixing plate is installed on the feed hopper; an electric control telescopic push rod for controlling the movement of the second fixing plate is also installed on the discharge hopper.

[0011] Preferably, the rotary drive group frame includes a support chassis, a fixed frame, an electric control hydraulic push rod, an annular gear, a drive motor and a first gear; the fixed frame is rotatably connected to the support chassis; an electric control hydraulic push rod for driving the fixed frame to turn up and down is rotatably connected to the support chassis through a rotating shaft; the fixed frame is rotatably connected to the roasting furnace; the feed hopper and the discharge hopper are both fixedly connected to the fixed frame; the annular gear is fixedly connected to the roasting furnace; the drive motor is installed on the fixed frame; the output shaft of the drive motor is fixedly connected to the first gear; the first gear meshes with the annular gear, and the output shaft of the drive motor drives the first gear to rotate, and the first gear meshing with the annular gear can drive the roasting furnace to rotate.

[0012] A roasting method for recycling aluminum ash slag includes the following steps: First, the recycled secondary aluminum ash slag is screened to separate the aluminum particles in the aluminum ash slag. After screening, the aluminum ash slag is sucked into the storage tank under negative pressure and conveyed to the forming equipment through a pipeline without dust for forming. After forming, it is clamped by a manipulator and stacked on the kiln car. After stacking, it is pushed into the roasting furnace of a roasting device for recycling aluminum ash slag and roasted in three roasting stages successively to remove reactivity. After roasting for not less than 30 hours, it is taken out of the kiln. At this time, the aluminum ash has no reactivity left, and then it is crushed into raw materials for making ceramsite. Then, after granulation treatment and screening treatment by a granulator, it enters the rotary kiln and is roasted into ceramsite products in the rotary kiln.

[0013] Preferably, the three roasting stages are as follows: the first roasting stage is continuous roasting at 200 °C for 10 h to complete the decomposition treatment of organic matter; the second roasting stage is continuous roasting at 350 °C for 10 h, and the fine aluminum powder stirred out is completely removed through the cooperation of the suction hole structure to complete the removal of aluminum powder treatment; the third roasting stage is continuous roasting at 600 °C - 800 °C under gradient heating treatment for 10 h to complete the dechlorination treatment.

[0014] The beneficial effects of the present invention are as follows: for a roasting method for recycling aluminum ash slag of the present invention, a provided roasting device for recycling aluminum ash slag is used to roast the aluminum ash slag. Two partition plates divide the roasting furnace into three roasting chambers, and the three roasting chambers respectively perform three roasting stages on the aluminum ash slag. The first roasting stage is roasting at 200 °C for 10 h to complete the decomposition treatment of organic matter. The second roasting stage is roasting at 350 °C for 10 h, and the fine aluminum powder stirred out is completely removed through the cooperation of the suction hole structure to complete the removal of aluminum powder treatment, avoiding the explosion hazard phenomenon of the residual aluminum powder in the subsequent roasting stage. The third roasting stage is roasting at 600 °C - 800 °C under gradient heating treatment for 10 h to complete the dechlorination treatment. After the roasting treatment of the aluminum ash slag is completed, the aluminum ash slag has no reactivity, and then it is successively subjected to crushing treatment, granulation treatment, and screening treatment, and then enters a rotary kiln for roasting to obtain ceramsite products; it solves the technical problem that when a large amount of fine aluminum powder remains inside the existing roasting furnace, a serious explosion hazard phenomenon will occur, affecting the life safety of the production line workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of a roasting device for recycling aluminum ash slag; Figure 2 is a perspective view of the roasting furnace of a roasting device for recycling aluminum ash slag; Figure 3 is a sectional perspective view of the roasting furnace of a roasting device for recycling aluminum ash slag; Figure 4 is a perspective view of the feed hopper of a roasting device for recycling aluminum ash slag; Figure 5 is a perspective view of the discharge hopper of a roasting device for recycling aluminum ash slag; Figure 6 is a perspective view of the ceramic brush of a roasting device for recycling aluminum ash slag; Figure 7 is a partial perspective view of the turning plate of a roasting device for recycling aluminum ash slag.

[0016] Reference numerals: 11 - support chassis, 12 - fixing frame, 13 - electro - controlled hydraulic push rod, 2 - roasting furnace, 21 - feed hopper, 22 - discharge hopper, 23 - ring gear, 24 - drive motor, 25 - first gear, 26 - turning plate, 2601 - spike structure, 31 - central shaft, 3101 - suction hole structure, 32 - partition plate, 3201 - notch structure, 3202 - ventilation hole structure, 33 - second gear, 34 - self - locking motor, 35 - third gear, 4 - burner, 51 - suction pipe, 52 - filter screen, 53 - ceramic brush, 61 - first fixing plate, 62 - second fixing plate, 7 - inert gas delivery pipe, 8 - electro - controlled telescopic push rod. Detailed implementation mode

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] Embodiment 1 A roasting device for recycling aluminum ash slag in this embodiment, as Figures 1-7As shown in the figure, it includes a rotary drive frame, a roasting furnace 2, a feed hopper 21, a discharge hopper 22, a central shaft 31, a suction hole structure 3101, a partition plate 32, a notch structure 3201, a second gear 33, a self-locking motor 34, a third gear 35, a burner 4, a suction pipe 51, a filter screen 52 and a ceramic brush 53; the roasting furnace 2 is rotatably connected to the rotary drive frame, and the roasting furnace 2 is set to be inclined downward in the direction of the discharge port; the feed hopper 21 and the discharge hopper 22 are sequentially connected to the rotary drive frame; the feed hopper 21 and the discharge hopper 22 are respectively rotatably connected to the feed port and the discharge port of the roasting furnace 2; a central shaft 31 is rotatably connected between the feed hopper 21 and the discharge hopper 22; two partition plates 32 for dividing the interior of the roasting furnace 2 into three roasting chambers are fixedly connected to the central shaft 31; both of the two partition plates 32 are rotatably connected to the roasting furnace 2; each of the two partition plates 32 is provided with a notch structure 3201, and the two notch structures 3201 on the two partition plates 32 are staggered from each other; a second gear 33 is fixedly connected to the central shaft 31; a self-locking motor 34 is installed on the discharge hopper 22; a third gear 35 is fixedly connected to the output shaft of the self-locking motor 34; the third gear 35 meshes with the second gear 33; a plurality of burners 4 for spraying roasting flames towards the two side roasting chambers are respectively installed on the two partition plates 32; a cavity structure is provided inside the central shaft 31, and a suction pipe 51 communicating with the cavity structure is fixedly connected to the central shaft 31, and the suction pipe 51 is externally connected to a suction device; a plurality of suction hole structures 3101 communicating with the cavity structure are provided on the central shaft 31, and the suction hole structures 3101 are located between the two partition plates 32; a filter screen 52 through which only fine aluminum powder can pass is fixedly connected to each of the suction hole structures 3101; two ceramic brushes 53 are fixedly connected inside the roasting furnace 2; both of the two ceramic brushes 53 are closely attached to the area of the central shaft 31 where the suction hole structures 3101 are provided.

[0019] As Figure 3 As shown in the figure, the roasting furnace 2 in a roasting device for recycling aluminum ash slag in this embodiment is divided into three roasting chambers by two partition plates 32. The roasting temperatures of the three roasting chambers are respectively controlled by the burners 4. First, the staff performs a screening process on the aluminum ash slag to separate the coarse aluminum grains, and then the screened aluminum ash slag is fed into the first roasting chamber on the side of the roasting furnace 2 close to the feed hopper 21 through the feed hopper 21 for the first roasting stage. The burner 4 controls the temperature in the first roasting chamber to be maintained at 200 °C, and continuously roasts the aluminum ash slag in the first roasting chamber for 10 h, and completes the treatment of organic matter decomposition at this temperature.

[0020] After that, the self-locking motor 34 controls the third gear 35 to engage with the second gear 33 and drive it to rotate. The second gear 33 drives the two partition plates 32 to turn downward until the notch structure 3201 on the partition plate 32 close to the first roasting chamber is turned to align with the inner bottom of the roasting furnace 2. At this time, the aluminum ash slag in the first roasting chamber will slide along the inner surface of the inclined roasting furnace 2, pass through the notch structure 3201 of the partition plate 32, and continuously slide into the second roasting chamber located between the two partition plates 32. Subsequently, the self-locking motor 34 controls the two partition plates 32 to turn upward to reset, and the second roasting stage is carried out. The burner 4 controls the temperature in the second roasting chamber to be maintained at 350 °C, and continuously roasts the aluminum ash slag in the second roasting chamber for 10 h. At the same time, the rotary drive group frame continuously drives the roasting furnace 2 to rotate. The rotating roasting furnace 2 will continuously stir the aluminum ash slag in the second roasting chamber, so that the fine aluminum powder turned up can be smoothly exposed from the piled-up aluminum ash slag. At the same time, the external suction device successively sucks away the exposed fine aluminum powder through the suction pipe 51 and the suction hole structure 3101 of the central shaft 31, while the aluminum ash slag will be intercepted by the filter screen 52 and cannot be sucked away through the suction hole structure 3101. As a large amount of aluminum ash slag accumulates on the filter screen 52, the aluminum ash slag will cover the filter screen 52 in the form of large-area agglomeration. During this process, the roasting furnace 2 continuously drives the ceramic brush 53 to rotate. The ceramic brush 53 continuously scrapes and crushes the large-area agglomerated aluminum ash slag covering the filter screen 52, and at the same time, the rotating ceramic brush 53 pushes the crushed aluminum ash slag away from the filter screen 52 to prevent the filter screen 52 from being blocked. The treatment work of removing aluminum powder is completed at this temperature.

[0021] After that, the self-locking motor 34 controls the two partition plates 32 to turn downward again until the notch structure 3201 on the other partition plate 32 is turned to align with the inner bottom of the roasting furnace 2. At this time, the aluminum ash slag in the second roasting chamber will pass through the notch structure 3201 of the partition plate 32 along the inclined roasting furnace 2 and continuously slide into the third roasting chamber close to the discharge hopper 22. Subsequently, the self-locking motor 34 controls the two partition plates 32 to turn upward to reset, and the third roasting stage is carried out. The burner 4 controls the temperature in the third roasting chamber to be subjected to a three-stage gradient heating treatment of 600 °C - 700 °C - 800 °C in sequence, and continuously roasts the aluminum ash slag in the second roasting chamber for 10 h. The dechlorination treatment work is completed at this temperature.

[0022] After the roasting treatment of the aluminum ash slag is completed, the aluminum ash slag has no reactivity. The staff takes out the roasted aluminum ash slag from the roasting furnace 2, and then uses the corresponding equipment to carry out crushing treatment, granulation treatment, and screening treatment on it, and then enters the rotary kiln for roasting to obtain ceramsite products.

[0023] As Figure 3 and Figure 7As shown in the figure, a number of turning plates 26 are equidistantly arranged on the inner wall of the surrounding roasting furnace 2 in this embodiment, and the turning plates 26 are located between two partition plates 32; a number of thorn structures 2601 are provided on the surface of each turning plate 26; during the second roasting stage, the turning plates 26 push up the aluminum ash slag in the second roasting chamber of the roasting furnace 2 in turn during the rotation of the roasting furnace 2. When the turning plate 26 rotates upward to a downward inclined state, the pushed-up aluminum ash slag falls back to the bottom of the roasting furnace 2 along the inclined turning plate 26, improving the stirring effect on the aluminum ash slag in the roasting furnace 2, and timely sucking away the exposed fine aluminum powder through the suction hole structure 3101, improving the collection efficiency of the fine aluminum powder. At the same time, the rotating turning plate 26 breaks up the agglomerated aluminum ash slag through its own thorn structure 2601, avoiding the problem that aluminum metal cannot be effectively separated because it is hidden in the agglomerated aluminum ash slag.

[0024] As Figures 3-5 shown, a first fixing plate 61 and a second fixing plate 62 for blocking the outward escaping fine aluminum powder are successively arranged on the central shaft 31 in this embodiment, and the first fixing plate 61 and the second fixing plate 62 are respectively located in the feed hopper 21 and the discharge hopper 22; a noble gas delivery pipe 7 is fixedly connected to each of the first fixing plate 61 and the second fixing plate 62, and the noble gas delivery pipe 7 is externally connected to a noble gas delivery device; a number of ventilation hole structures 3202 penetrating in the left-right direction are formed on each of the two partition plates 32. During the first roasting stage, the second roasting stage and the third roasting stage, the externally connected noble gas delivery device continuously delivers noble gas to the first roasting chamber and the second roasting chamber of the roasting furnace 2 through the noble gas delivery pipe 7. The noble gas in the first roasting chamber and the third roasting chamber will enter the second roasting chamber through the ventilation hole structure 3202, realizing that the noble gas fills the entire interior of the roasting furnace 2, making the roasting work of the aluminum ash slag completely isolated from the external oxygen, and avoiding the dangerous phenomenon of explosion when the aluminum metal in the aluminum ash slag contacts oxygen in a high-temperature environment.

[0025] Embodiment 2 On the basis of Embodiment 1, as Figures 1-7As shown in the figure, the first fixing plate 61 and the second fixing plate 62 of this embodiment use plug plate materials corresponding to the feeding hopper 21 and the discharging hopper 22 respectively; the first fixing plate 61 and the second fixing plate 62 are jointly slidably connected to the central shaft 31; an electric control telescopic push rod 8 is installed on the feeding hopper 21, and the telescopic end of the electric control telescopic push rod 8 is fixedly connected to the first fixing plate 61; an electric control telescopic push rod 8 is also installed on the discharging hopper 22, and the telescopic end of the electric control telescopic push rod 8 is fixedly connected to the second fixing plate 62; during the roasting process of the aluminum ash residue in the roasting furnace 2; the two electric control telescopic push rods 8 pull the first fixing plate 61 and the second fixing plate 62 to move towards the corresponding feeding hopper 21 and discharging hopper 22 respectively, and the feeding hopper 21 and the discharging hopper 22 are blocked by the first fixing plate 61 and the second fixing plate 62 respectively, so that the roasting furnace 2 forms a closed roasting space, which can not only prevent the outside air from entering the roasting furnace 2 and contacting the residual aluminum metal, but also suck away all the fine aluminum powder generated in the roasting furnace 2 through the suction pipe 51, avoiding the pollution caused by the dispersion of the fine aluminum powder into the external environment.

[0026] Embodiment 3 On the basis of Embodiment 1, as Figures 1-7 shown in the figure, the rotary drive group frame of this embodiment includes a supporting bottom frame 11, a fixing frame 12, an electric control hydraulic push rod 13, an annular gear 23, a driving motor 24 and a first gear 25; the fixing frame 12 is rotatably connected to the supporting bottom frame 11; two electric control hydraulic push rods 13 are rotatably connected to the supporting bottom frame 11 through a rotating shaft; the telescopic ends of the two electric control hydraulic push rods 13 are jointly rotatably connected to the fixing frame 12 through a rotating shaft; after the roasting furnace 2 finishes roasting the aluminum ash residue, the two electric control hydraulic push rods 13 jointly push the fixing frame 12 to turn upwards, so that the discharging hopper 22 of the fixing frame 12 is turned downwards, and the roasted aluminum ash residue in the roasting furnace 2 can be automatically poured down through the discharging hopper 22, without the need for workers to manually dig out the aluminum ash residue with tools; the fixing frame 12 is rotatably connected to the roasting furnace 2; the feeding hopper 21 and the discharging hopper 22 are both fixedly connected to the fixing frame 12; an annular gear 23 is fixedly connected to the roasting furnace 2; a driving motor 24 is installed on the fixing frame 12; the output shaft of the driving motor 24 is fixedly connected with a first gear 25; the first gear 25 meshes with the annular gear 23; the output shaft of the driving motor 24 drives the first gear 25 to rotate, and the first gear 25 meshing with the annular gear 23 can drive the roasting furnace 2 to rotate.

[0027] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A roasting device for the recycling of aluminum ash slag, comprising a rotary drive group frame; a roasting furnace (2) is rotatably connected to the rotary drive group frame, and the roasting furnace (2) is arranged to be inclined downward in the direction of the discharge port; a feed hopper (21) and a discharge hopper (22) are sequentially connected to the rotary drive group frame; the feed hopper (21) and the discharge hopper (22) are respectively rotatably connected to the roasting furnace (2). It is characterized in that: It further includes a central shaft (31); a central shaft (31) is rotatably connected between the feed hopper (21) and the discharge hopper (22); two partition plates (32) for dividing the interior of the roasting furnace (2) into three roasting chambers are fixedly connected to the central shaft (31); the partition plates (32) are respectively rotatably connected to the roasting furnace (2); each of the two partition plates (32) is provided with a notch structure (3201) that is offset from each other; a second gear (33) is fixedly connected to the central shaft (31); a self-locking motor (34) is installed on the discharge hopper (22); a third gear (35) is fixedly connected to the output shaft of the self-locking motor (34); the third gear (35) meshes with the second gear (33); a plurality of burners (4) are installed on the partition plates (32); a cavity structure is provided inside the central shaft (31), and a suction pipe (51) communicating with the cavity structure is fixedly connected to the central shaft (31); a plurality of suction hole structures (3101) communicating with the cavity structure are provided on the central shaft (31); a filter screen (52) is fixedly connected to each suction hole structure (3101); at least two ceramic brushes (53) closely attached to the area of the central shaft (31) provided with the suction hole structures (3101) are fixedly connected inside the roasting furnace (2).

2. The roasting device for recycling aluminum ash slag according to claim 1 is characterized in that: A plurality of turning plates (26) are provided on the inner wall of the roasting furnace (2).

3. The roasting device for recycling aluminum ash residue according to claim 2, characterized in that: Each surface of the turning plate (26) is provided with a plurality of spike structures (2601).

4. A roasting device for recycling aluminum ash slag according to claim 1, characterized in that: A first fixing plate (61) and a second fixing plate (62) for blocking the escape of fine aluminum powder are sequentially provided on the central shaft (31), and the first fixing plate (61) and the second fixing plate (62) are respectively located inside the feed hopper (21) and the discharge hopper (22).

5. The roasting device for recycling aluminum ash residue according to claim 4, characterized in that: An inert gas delivery pipe (7) is fixedly connected to each of the first fixing plate (61) and the second fixing plate (62).

6. The roasting device for recycling aluminum ash residue according to claim 5, characterized in that: A plurality of through ventilation hole structures (3202) in the left-right direction are provided on each of the two partition plates (32).

7. The roasting device for recycling aluminum ash residue according to claim 1, characterized in that: The first fixing plate (61) and the second fixing plate (62) are made of plug plate materials, and the first fixing plate (61) and the second fixing plate (62) are respectively used to block the feed hopper (21) and the discharge hopper (22); the first fixing plate (61) and the second fixing plate (62) are slidably connected to the central shaft (31) together; an electric control telescopic push rod (8) for controlling the movement of the first fixing plate (61) is installed on the feed hopper (21); an electric control telescopic push rod (8) for controlling the movement of the second fixing plate (62) is also installed on the discharge hopper (22).

8. The roasting device for recycling aluminum ash residue according to claim 1, characterized in that: The rotary drive assembly includes a support chassis (11), a fixed frame (12), an electric control hydraulic push rod (13), an annular gear (23), a drive motor (24) and a first gear (25); the fixed frame (12) is rotatably connected to the support chassis (11); the electric control hydraulic push rod (13) that drives the fixed frame (12) to turn up and down is rotatably connected to the support chassis (11) through a rotating shaft; the fixed frame (12) is rotatably connected to the roasting furnace (2); the feeding hopper (21) and the discharging hopper (22) are both fixedly connected to the fixed frame (12); the annular gear (23) is fixedly connected to the roasting furnace (2); the drive motor (24) is installed on the fixed frame (12); the output shaft of the drive motor (24) is fixedly connected to the first gear (25); the first gear (25) meshes with the annular gear (23); the output shaft of the drive motor (24) drives the first gear (25) to rotate, and the first gear (25) meshing with the annular gear (23) can drive the roasting furnace (2) to rotate.

9. A roasting method for the recycling of aluminum ash slag, which uses a roasting device for the recycling of aluminum ash slag described in any one of claims 1-8, characterized in that, It includes the following steps: First, screen the recycled secondary aluminum ash slag to screen out the aluminum particles in the aluminum ash slag. The screened aluminum ash slag is sucked into the storage tank under negative pressure and conveyed dustlessly through a pipeline to a forming device for forming. After forming, it is clamped by a manipulator and stacked on a kiln car. After stacking, it is pushed into the roasting furnace (2) of an aluminum ash slag recycling and utilization roasting device, and roasting is carried out in three roasting stages successively to remove reactivity. After roasting for no less than 30 hours, it comes out of the kiln. At this time, the aluminum ash has no reactivity left. Then it is crushed to become the raw material for manufacturing ceramsite. Then, after granulation treatment and screening treatment by a granulator, it enters a rotary kiln and is roasted into ceramsite products in the rotary kiln.

10. A roasting method for recycling aluminum ash slag according to claim 9, characterized in that, The three roasting stages are as follows: The first roasting stage is to continuously roast at a temperature of 200°C for 10h to complete the decomposition treatment of organic substances. The second roasting stage is to continuously roast at a temperature of 350°C for 10h, and through cooperation with the suction hole structure, suck out the fine aluminum powder stirred out to complete the aluminum powder removal treatment. The third roasting stage is to continuously roast for 10h under a gradient temperature increase treatment of 600°C - 800°C to complete the chlorine removal treatment.

Images