Primary pretreatment device for harmless recovery and separation of aluminum ash

Abstract

The utility model discloses an aluminum ash harmless recovery and separation preliminary pretreatment device which comprises a box body, a feeding port, a feeding port baffle, a positioning spring, a supporting rod, a magnetic suction filter screen, a magnetic suction filter screen handle, a supporting plate, a water injection pipeline, a water injection valve, a collection box, a collection box handle, a filter screen, a water accumulation tank, a drainage pipeline and a drainage valve. The feeding port baffle controlled by the positioning spring is arranged at the feeding port, the feeding port baffle can extrude the positioning spring to open the feeding port baffle when bearing the pressure of the aluminum ash residues, the feeding port baffle can be automatically closed when the aluminum ash residues cannot feel the pressure after all the aluminum ash residues fall into the box body, and dust of the aluminum ash residues can be effectively reduced. The aluminum ash residue recycling and separating device is simple in structure, iron impurities in aluminum ash residues can be removed by adsorbing the aluminum ash residues through the magnetic suction filter screen, ammonia gas in the aluminum ash residues can be removed by injecting water into the aluminum ash residues in the collecting box, harmless preliminary pretreatment can be conducted on the aluminum ash residues, and the recycling and separating efficiency of the aluminum ash residues is improved.

Description

Technical Field

[0001] The utility model relates to a harmless pretreatment device, in particular to a preliminary pretreatment device for harmless recycling and separation of aluminum ash slag, belonging to the technical field of aluminum ash slag treatment. Background Art

[0002] Aluminum ash slag is an impure mixed metal slag produced during aluminum smelting. A variety of by-products will be generated during the aluminum smelting and forming processes. As the main by-product of the aluminum industry, aluminum ash is generated in all processes where aluminum is melted. The aluminum content in it accounts for about 1-12% of the total loss during the aluminum production and use process. In the past, people regarded aluminum ash slag as waste residue and piled it up, which not only caused waste of aluminum resources but also brought environmental problems. Therefore, finding an economical and effective method to utilize and treat aluminum ash slag will not only improve the economic benefits of the aluminum industry, but also have an important impact on the realization of the sustainable development of the economy and society while realizing the effective recycling of resources.

[0003] In the prior art, for example, the utility model with the application number CN202122822052.5 discloses a screening device for harmless treatment of aluminum ash slag, including a main body component, a rotating component, a cleaning component and a feeding component. The main body component includes a fixing plate, the rotating component includes a rotating shaft and a connecting column, and the cleaning component includes a second motor, a third connecting rod, a second connecting ring, a fourth connecting rod and a scraping rod; the second motor is installed on one side of the connecting column, the third connecting rod is welded to one end of the output shaft of the second motor, and the second connecting ring is rotatably connected to the outer side wall of the rotating shaft through a bearing. In this utility model, two fourth connecting rods can be rotatably connected to the outer side wall of the rotating shaft through the second connecting ring. The output shaft of the second motor rotates to drive the third connecting rod to rotate, and the third connecting rod and the fourth connecting rod are fixedly connected through the scraping rod. Therefore, the scraping rod can rotate along with the output shaft of the second motor and rotate along the inner side wall of the drum, so as to achieve the purpose of cleaning the blocked aluminum particles on the inner side wall of the drum. However, after the screening of this device, the iron element and the toxic and harmful nitrogen gas inside the aluminum ash slag are not effectively removed, thus affecting the purity of aluminum, and the iron element can be recycled, and discarding it will cause waste of resources. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a harmless pretreatment device to improve the efficiency of aluminum ash slag recycling and separation.

[0005] The technical solution adopted by the utility model to solve the technical problem is:

[0006] An aluminum ash residue harmless recycling and separation preliminary pretreatment device, comprising a box body, a feed inlet, a feed inlet baffle, a positioning spring, a support rod, a magnetic adsorption filter screen, a magnetic adsorption filter screen handle, a support plate, a water injection pipeline, a water injection valve, a collection box, a collection box handle, a filter screen, a water accumulation tank, a drainage pipeline, and a drainage valve. The feed inlet is arranged above the left end of the box body. The feed inlet baffle is connected to the support rod. The positioning spring is connected to the support rod. Both ends of the support rod are welded to the connection part of the box body and the feed inlet. The support plate is welded inside the box body. The magnetic adsorption filter screen is arranged inside the box body through the support plate welded inside the box body. The magnetic adsorption filter screen handle is connected to the magnetic adsorption filter screen. The collection box is arranged inside the box body through the support plate welded inside the box body. The collection box handle is connected to the collection box. The water injection pipeline is connected to the box body, arranged between the magnetic adsorption filter screen and the collection box, and the collection box is below the water injection port. The water injection valve is connected to the water injection pipeline. The filter screen is arranged at the bottom of the collection box. The water accumulation tank is arranged below the collection box. The drainage pipeline is connected to the water accumulation tank. The drainage valve is connected to the drainage pipeline.

[0007] The feed inlet baffle is provided with reserved holes for connecting the support rod, and two grooves are arranged on the left side for connecting the positioning spring. The support rod passes through the left side of the feed inlet baffle, and the positioning spring and the feed inlet baffle are connected through the support rod.

[0008] The magnetic adsorption filter screen is made of magnetic adsorption material, and the filter holes of the filter screen are set to be relatively large. It is placed inside the box body through the support plate. The bottom of the collection box is set as an inclined surface and is placed inside the box body through the support plate. A filter screen is arranged at the center of its bottom. The filter screen is a low-density filter screen.

[0009] The support plates are set to be four, with the same length as the box body, and are welded inside the box body. Two are arranged below the magnetic adsorption filter screen, and the other two are arranged below the collection box.

[0010] The positioning springs are set to be two, arranged at the grooves of the feed inlet baffle, and are connected to the feed inlet baffle through the support rod.

[0011] Put the aluminum ash residue into the box through the feed inlet. The feed inlet baffle at the feed inlet is under the pressure of the aluminum ash residue, which will squeeze the positioning spring to open the feed inlet baffle, and the aluminum ash residue will enter the box from here. After all the aluminum ash residue falls into the box, the feed inlet baffle will automatically close when it no longer feels the pressure. The aluminum ash residue that enters the box will fall onto the magnetic adsorption filter screen. At this time, the iron impurities in the aluminum ash residue will be adsorbed onto the magnetic adsorption filter screen, improving the purity of the sieved aluminum ash residue. After the iron impurities are adsorbed, the aluminum ash residue will fall into the collection box below the magnetic adsorption filter screen. Open the water injection valve of the water injection pipeline to inject water into the collection tank. The aluminum nitride therein will undergo a hydrolysis reaction with water to generate aluminum hydroxide and ammonia. The ammonia dissolves in water, and the injected water will flow into the water accumulation tank along with the filter screen with lower density. Due to the low density of the filter screen, the aluminum ash residue will not flow into the water accumulation tank, and the ammonia therein will also be removed. Open the drain valve, and the water and ammonia will flow out of the box through the drain pipeline. Then, pull out the magnetic adsorption filter screen for rinsing, and the iron impurities adsorbed on it can also be recycled. Taking out the aluminum ash residue in the collection box can achieve the preliminary pretreatment of the harmless recycling and separation of the aluminum ash residue.

[0012] The positive and beneficial effects of the present utility model:

[0013] 1. The present utility model is composed of a box body, a feed inlet, a magnetic adsorption filter screen, a support plate, a collection box, a filter screen, a water accumulation tank, a drain pipeline, valves, etc. The structure is simple. The iron impurities in the aluminum ash residue can be removed by adsorbing the aluminum ash residue through the magnetic adsorption filter screen. By injecting water into the aluminum ash residue in the collection box, the ammonia in the aluminum ash residue can be removed, enabling the harmless preliminary pretreatment of the aluminum ash residue and improving the efficiency of the recycling and separation of the aluminum ash residue.

[0014] 2. The present utility model adsorbs the iron elements inside the aluminum ash residue by setting a magnetic adsorption filter screen. It can not only remove the iron impurities in the aluminum ash residue, but also take out the magnetic adsorption filter screen after adsorption to recycle and utilize the iron elements adsorbed on it, saving resources and having high industrial value.

[0015] 3. The present utility model sets a filter screen with low density to discharge the water in the collection box and the ammonia in the aluminum ash residue, which will not affect the collection of the aluminum ash residue. And the bottom of the collection box is set as an inclined plane inclined to the filter screen, so that the water will automatically flow into the filter screen.

[0016] 4. The present utility model sets a feed inlet baffle controlled by a positioning spring at the feed inlet. The feed inlet baffle is under the pressure of the aluminum ash residue, which will squeeze the positioning spring to open the feed inlet baffle. After all the aluminum ash residue falls into the box, the feed inlet baffle will automatically close when it no longer feels the pressure, which can effectively reduce the dust of the aluminum ash residue. Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2Schematic diagram of the left - hand internal view of the present utility model;

[0019] Figure 3 Schematic diagram of the right - hand internal view of the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the feed - inlet baffle of the present utility model;

[0021] Figure 5 Schematic diagram of the structure of the magnetic - adsorption filter screen of the present utility model;

[0022] Figure 6 Schematic diagram of the structure of the filter screen of the present utility model.

[0023] In the figure: 1 - box body, 2 - feed inlet, 3 - feed - inlet baffle, 4 - positioning spring, 5 - support rod, 6 - magnetic - adsorption filter screen, 7 - magnetic - adsorption filter - screen handle, 8 - support plate, 9 - water - injection pipeline, 10 - water - injection valve, 11 - collection box, 12 - collection - box handle, 13 - filter screen, 14 - water - accumulation tank, 15 - drainage pipeline, 16 - drainage valve. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: Refer to Figures 1-6, An aluminum ash residue harmless recycling and separation preliminary pretreatment device, comprising: a box body 1, a feed inlet 2, a feed inlet baffle 3, a positioning spring 4, a support rod 5, a magnetic adsorption filter screen 6, a magnetic adsorption filter screen handle 7, a support plate 8, a water injection pipe 9, a water injection valve 10, a collection box 11, a collection box handle 12, a filter screen 13, a water accumulation tank 14, a drainage pipe 15, and a drainage valve 16. The feed inlet 2 is arranged above the left end of the box body 1. The feed inlet baffle 3 is connected to the support rod 5, and the positioning spring 4 is connected to the support rod 5. Both ends of the support rod 5 are welded to the connection part of the box body 1 and the feed inlet 2. The support plate 8 is welded inside the box body 1. The magnetic adsorption filter screen 6 is arranged inside the box body 1 through the support plate 8 welded inside the box body 1. The magnetic adsorption filter screen handle 7 is connected to the magnetic adsorption filter screen 6. The collection box 11 is arranged inside the box body 1 through the support plate 8 welded inside the box body 1. The collection box handle 12 is connected to the collection box 11. The water injection pipe 9 is connected to the box body 1 and is arranged between the magnetic adsorption filter screen 6 and the collection box 11. The collection box 11 is below the water injection port. The water injection valve 10 is connected to the water injection pipe 9. The filter screen 13 is arranged at the bottom of the collection box 11. The water accumulation tank 14 is arranged below the collection box 11. The drainage pipe 15 is connected to the water accumulation tank 14, and the drainage valve 16 is connected to the drainage pipe 15.

[0026] The feed inlet baffle 3 is provided with reserved holes for connecting the support rod 5, and two grooves are arranged on the left side to connect the positioning spring 4. The support rod 5 passes through the left side of the feed inlet baffle 3, and the positioning spring 4 is connected to the feed inlet baffle 3 through the support rod 5.

[0027] The magnetic adsorption filter screen 6 is made of magnetic adsorption material, and the filter holes of the filter screen 13 are set to be relatively large. It is placed inside the box body 1 through the support plate 8. The bottom of the collection box 11 is set as an inclined plane and is placed inside the box body 1 through the support plate 8. A filter screen 13 is arranged at the center of its bottom. The filter screen 13 is a low-density filter screen 13.

[0028] The support plates 8 are set to be four, with the same length as the box body 1, and are welded inside the box body 1. Two are arranged below the magnetic adsorption filter screen 6, and the other two are arranged below the collection box 11.

[0029] The positioning springs 4 are set to be two, arranged at the grooves of the feed inlet baffle 3, and are connected to the feed inlet baffle 3 through the support rod 5.

[0030] Put the aluminum ash slag into the box body 1 through the feed inlet 2. The feed inlet baffle 3 at the feed inlet 2 is pressed by the aluminum ash slag, which will squeeze the positioning spring 4 to open the feed inlet baffle 3, and the aluminum ash slag will enter the box body 1 from here. After all the aluminum ash slag falls into the box body 1, the feed inlet baffle 3 will automatically close when it no longer feels the pressure. The aluminum ash slag that enters the box body 1 will fall onto the magnetic adsorption filter screen 6. At this time, the iron impurities in the aluminum ash slag will be adsorbed onto the magnetic adsorption filter screen 6, improving the purity of the screened aluminum ash slag. After the iron impurities are adsorbed, the aluminum ash slag will fall into the collection box 11 below the magnetic adsorption filter screen 6. Open the water injection valve 10 of the water injection pipeline 9 to inject water into the collection tank 11. The aluminum nitride in it will undergo a hydrolysis reaction with water to generate aluminum hydroxide and ammonia. The ammonia dissolves in water, and the injected water will flow into the water accumulation tank 14 along the filter screen 13 with lower density. Because the density of the filter screen 13 is low, the aluminum ash slag will not flow into the water accumulation tank 14, and the ammonia in it will also be removed accordingly. Open the drain valve 16, and the water and ammonia will flow out of the box through the drain pipeline 15. Then pull out the magnetic adsorption filter screen 6 for flushing, and the iron impurities adsorbed on it can also be recycled. Taking out the aluminum ash slag in the collection box 11 can achieve the preliminary pretreatment of the harmless recycling and separation of the aluminum ash slag.

[0031] The utility model is composed of a box body, a feed inlet, a magnetic adsorption filter screen, a support plate, a collection box, a filter screen, a water accumulation tank, a drain pipeline, valves, etc. It has a simple structure. By adsorbing the aluminum ash slag with the magnetic adsorption filter screen, the iron impurities in the aluminum ash slag can be removed. By injecting water into the aluminum ash slag in the collection box, the ammonia in the aluminum ash slag can be removed, which can conduct harmless preliminary pretreatment on the aluminum ash slag and improve the efficiency of recycling and separating the aluminum ash slag. The utility model adsorbs the iron elements inside the aluminum ash slag by setting a magnetic adsorption filter screen. It can not only remove the iron impurities in the aluminum ash slag, but also take out the magnetic adsorption filter screen after adsorption to recycle and utilize the iron elements adsorbed on it, saving resources and having high industrial value. The utility model sets a filter screen with low density to discharge the water in the collection box and the ammonia in the aluminum ash slag, which will not affect the collection of the aluminum ash slag, and the bottom of the collection box is set as an inclined plane inclined to the filter screen, so that the water will automatically flow into the filter screen. The utility model sets a feed inlet baffle controlled by a positioning spring at the feed inlet. The feed inlet baffle is pressed by the aluminum ash slag, which will squeeze the positioning spring to open the feed inlet baffle. After all the aluminum ash slag falls into the box body, the feed inlet baffle will automatically close when it no longer feels the pressure, which can effectively reduce the dust of the aluminum ash slag.

Claims

1. A preliminary pretreatment device for harmless recovery and separation of aluminum ash, characterized by: The harmless recovery and separation preliminary pretreatment device for aluminum ash slag comprises: a box body (1), a feed port (2), a feed port baffle (3), a positioning spring (4), a support rod (5), a magnetic filter (6), a magnetic filter handle (7), a support plate (8), a water injection pipe (9), a water injection valve (10), a collection box (11), a collection box handle (12), a filter (13), a water trough (14), a drainage pipe (15), and a drainage valve (16). The feed port (2) is arranged above the left end of the box body (1), the feed port baffle (3) is connected to the support rod (5), the positioning spring (4) is connected to the support rod (5), both ends of the support rod (5) are welded to the connection between the box body (1) and the feed port (2), the support plate (8) is welded inside the box body (1), the magnetic filter (6) is connected to the support rod (5), and the magnetic filter handle (7) is connected to the support rod (5). ) is arranged in the box body (1) through a support plate (8) welded in the box body (1), the magnetic filter handle (7) is connected to the magnetic filter (6), the collection box (11) is arranged in the box body (1) through a support plate (8) welded in the box body (1), the collection box handle (12) is connected to the collection box (11), the water injection pipe (9) is connected to the box body (1) and is arranged between the magnetic filter (6) and the collection box (11), the collection box (11) is below the water injection port, the water injection valve (10) is connected to the water injection pipe (9), the filter (13) is arranged at the bottom of the collection box (11), the water trough (14) is arranged below the collection box (11), the drainage pipe (15) is connected to the water trough (14), and the drainage valve (16) is connected to the drainage pipe (15).

2. The device for harmless recovery and separation of aluminum ash slag according to claim 1 is characterized in that: The feed inlet baffle (3) is provided with a reserved hole for connecting the support rod (5), and two grooves are provided on the left side for connecting the positioning spring (4). The support rod (5) crosses the left side of the feed inlet baffle (3), and the positioning spring (4) is connected to the feed inlet baffle (3) through the support rod (5).

3. The device for harmless recovery and separation of aluminum ash slag according to claim 1 is characterized in that: The magnetic filter (6) is made of magnetic material and is placed in the box (1) via a support plate (8); the bottom of the collection box (11) is arranged as an inclined surface and is placed in the box (1) via a support plate (8); a filter (13) is arranged at the center of the bottom; the filter (13) is a low-density filter (13).

4. The device for harmless recovery and separation of aluminum ash slag according to claim 1 is characterized in that: The support plates (8) are provided in four pieces, have a length consistent with that of the box body (1), are welded to the inside of the box body (1), two are provided below the magnetic filter screen (6), and the other two are provided below the collection box (11).

5. The device for harmless recovery and separation of aluminum ash slag according to claim 1 is characterized by: The positioning springs (4) are provided in two numbers and are arranged in the groove of the feed inlet baffle (3) and are connected to the feed inlet baffle (3) via a support rod (5).

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