Pretreatment system for blocky waste of electrolytic aluminum factory

Abstract

The utility model discloses a blocky waste pretreatment system for an electrolytic aluminum plant. The blocky waste pretreatment system comprises a vibrating feeder, a jaw crusher, a cone crusher, a first iron remover, a first screening machine, a dry ball mill and a powder concentrator. The system has the advantages that block materials can be subjected to coarse crushing, medium crushing and fine grinding treatment through the jaw crusher, the cone crusher and the dry ball mill, qualified powder is obtained, elemental iron and elemental aluminum can be effectively separated out in the process, the content of the elemental iron and the content of the elemental aluminum in the powder are reduced, and the production cost is reduced. And therefore, the influence on subsequent valuable metal recovery and the purification cost are reduced. Moreover, the first screening machine can convey the sorted elemental aluminum and elemental iron to the manual sorting platform, manual sorting of the elemental aluminum and the elemental iron is completed in the manual sorting platform, operation on a conveying belt is not needed, the operation safety is improved, most of the elemental iron is sorted by the first iron remover, therefore, the labor intensity of subsequent manual sorting is reduced, and the working efficiency is improved. And the working efficiency is improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of the treatment of massive waste materials in electrolytic aluminum plants, and particularly relates to a pretreatment system for massive waste materials in electrolytic aluminum plants. Background Art:

[0002] The size of massive materials such as electrolytes generated by electrolytic aluminum plants is generally 20 - 60 cm, which contain valuable metals such as Li, Na, F, and Ca. Before recycling these valuable metals, the above massive materials need to be crushed and finely ground into powders with a sieve passing rate of 95% at 160 meshes. Moreover, in order to reduce the adverse effects of entrained elemental aluminum and elemental iron in the above materials on the subsequent recycling of valuable metals, it is necessary to remove the entrained elemental aluminum and elemental iron. The existing crushing scheme is as follows: During the crushing process of massive materials, manual selection of elemental aluminum and elemental iron is directly carried out on the belt conveyor, which poses a great safety hazard; and for grinding to 160 meshes, a Raymond mill is mostly selected for grinding, resulting in the elemental aluminum and elemental iron that are not completely separated during the crushing process being over-ground in the Raymond mill and entering the subsequent process together with the materials, making it impossible to effectively separate them, and causing great difficulties in the production and purification of the subsequent process. Content of the Utility Model:

[0003] The purpose of the utility model is to provide a pretreatment system for massive waste materials in electrolytic aluminum plants.

[0004] The utility model is implemented by the following technical scheme: A pretreatment system for massive waste materials in electrolytic aluminum plants, which includes a vibrating feeder, a jaw crusher, a cone crusher, a first iron remover, and a first screening machine connected in sequence. The oversize material outlet of the first screening machine is connected to the feeding end of the manual sorting platform, the undersize material outlet of the first screening machine is communicated with the inlet of the buffer tank, the outlet of the buffer tank is communicated with the inlet of the dry ball mill, the outlet of the dry ball mill is communicated with the inlet of the powder box, the outlet of the powder box is communicated with the inlet of the powder separator, the light material outlet of the powder separator is communicated with the inlet of the finished product bin, the heavy material outlet of the powder separator is communicated with the inlet of the second screening machine, the oversize material outlet of the second screening machine is communicated with the inlet of the elemental aluminum bin, and the undersize material outlet of the second screening machine is communicated with the inlet of the buffer tank.

[0005] Further, the discharging end of the manual sorting platform is communicated with the inlet of the cone crusher.

[0006] Further, it further includes a second iron remover arranged between the outlet of the powder box and the inlet of the powder separator. The outlet of the dry ball mill is communicated with the inlet of the second iron remover, and the outlet of the second iron remover is communicated with the inlet of the powder separator.

[0007] Furthermore, the outlet of the powder bin is communicated with the inlet of the powder separator through a pipeline, and the second iron remover is a pipeline-type iron remover arranged on the pipeline.

[0008] Furthermore, the first iron remover is an electromagnetic iron remover.

[0009] Advantages of the present utility model: This system can perform coarse crushing, medium crushing, and fine grinding on lumps through a jaw crusher, a cone crusher, and a dry ball mill to obtain qualified powder. During this process, elemental iron and elemental aluminum can be effectively separated, reducing the content of elemental iron and elemental aluminum in the powder, thereby reducing the impact on subsequent valuable metal recovery and purification costs. Moreover, the first screening machine can send the separated elemental aluminum and elemental iron to the manual sorting platform, where manual sorting of elemental aluminum and elemental iron is completed without the need to operate on the conveyor belt, improving the safety of operation. And most of the elemental iron has been sorted out by the first iron remover. Therefore, the labor intensity of subsequent manual sorting is reduced, and the operation efficiency is improved. Description of the drawings:

[0010] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0011] Vibrating feeder 1, jaw crusher 2, cone crusher 3, first iron remover 4, first screening machine 5, manual sorting platform 6, buffer bin 7, dry ball mill 8, powder separator 9, finished product bin 10, second screening machine 11, elemental aluminum bin 12, second iron remover 13, powder bin 14. Specific implementation manners:

[0012] In the description of the present utility model, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present utility model. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0013] Such as Figure 1As shown in the figure, a pretreatment system for block waste in an electrolytic aluminum plant includes a vibrating feeder 1, a jaw crusher 2, a cone crusher 3, a first iron remover 4, and a first screening machine 5 that are connected in sequence. The oversize outlet of the first screening machine 5 is connected to the feeding end of the manual sorting platform 6, and the discharging end of the manual sorting platform 6 is communicated with the inlet of the cone crusher 3. In this embodiment, the vibrating feeder 1, the jaw crusher 2, the cone crusher 3, the first iron remover 4, the first screening machine 5, and the manual sorting platform 6 are connected to each other by belt conveyors. The first iron remover 4 is a permanent magnet iron remover provided on the corresponding belt conveyor. After the raw materials enter the system through the vibrating feeder 1, they are successively subjected to coarse crushing and medium crushing by the jaw crusher 2 and the cone crusher 3, and then the elemental iron is separated by the first iron remover 4. Then, the materials are screened by the first screening machine 5. The elemental aluminum and elemental iron separated by the first screening machine 5 are sent to the manual sorting platform, where the separation of elemental aluminum and elemental iron is completed manually, without the need to operate on the conveyor belt, improving the safety of operation. Moreover, most of the elemental iron has been separated by the first iron remover 4. Therefore, the labor intensity of subsequent manual sorting is reduced, and the operation efficiency is improved.

[0014] The undersize outlet of the first screening machine 5 is communicated with the inlet of the buffer tank 7, the outlet of the buffer tank 7 is communicated with the inlet of the dry ball mill 8, the outlet of the dry ball mill 8 is communicated with the inlet of the powder tank 14, the outlet of the powder tank 14 is communicated with the inlet of the powder separator 9, the lightweight material outlet of the powder separator 9 is communicated with the inlet of the finished product bin 10, the heavyweight material outlet of the powder separator 9 is communicated with the inlet of the second screening machine 11, and the oversize outlet of the second screening machine 11 is communicated with the inlet of the elemental aluminum bin 12. The undersize outlet of the second screening machine 11 is communicated with the inlet of the buffer tank 7. In this embodiment, both between the first screening machine 5 and the buffer tank 7, and between the second screening machine 11 and the buffer tank 7 are connected by belt conveyors. The materials screened by the first screening machine 5 are buffered by the buffer tank 7 and then finally ground by the dry ball mill 8. The finely ground materials are temporarily stored in the powder tank 14 and then sent to the powder separator 9 to select the qualified powder. The unqualified materials are screened by the second screening machine 11 to separate the elemental aluminum, and the remaining materials are sent back to the buffer tank 7.

[0015] It further includes a second iron remover 13 provided between the outlet of the powder tank 14 and the powder separator 9. The outlet of the dry ball mill 8 is communicated with the inlet of the second iron remover 13, and the outlet of the second iron remover 13 is communicated with the inlet of the powder separator 9. In this embodiment, the outlet of the powder tank 14 and the inlet of the powder separator 9 are connected by a pipeline, and the second iron remover 13 is a pipeline type iron remover provided on this pipeline. The second iron remover 13 can be used to further separate a small amount of elemental iron mixed in the powder after ball milling, further reducing the iron content of the finished powder.

[0016] Working process:

[0017] S1: The bulk raw materials are transported to the crushing workshop in bulk, and then transferred to the hopper of the vibrating feeder 1 by a forklift for a second time. The vibrating feeder 1 feeds the bulk raw materials to the jaw crusher 2 in a vibrating manner. The bulk raw materials are roughly crushed by the jaw crusher 2 to 30 - 60 mm;

[0018] S2: The roughly crushed slag is transported to the cone crusher 3 by a belt conveyor for medium crushing to 10 - 20 mm. During this process, the first iron remover 4 is used to select the elemental iron exposed after medium crushing;

[0019] S3: The slag after medium crushing is sent to the first screening machine 5 for screening of elemental aluminum and elemental iron. The oversize materials are sent to the manual sorting platform 6, and the elemental iron and elemental aluminum are sorted out manually. The remaining materials are then sent back to the cone crusher 3 for re - crushing; The undersize materials are sent to the buffer bin;

[0020] S4: The materials in the buffer bin 7 are sent to the dry ball mill 8 for final fine grinding. The qualified powder with a final particle size of 160 mesh and a 90% sieve passing rate is sent to the powder bin 14 for temporary storage;

[0021] S5: The powder sent out from the powder bin 14 is further sorted out of the elemental iron by the second iron remover 13. The powder is then sent to the powder separator 9 for powder separation. The light powder that meets the requirements with a particle size of 160 mesh and a sieve passing rate of more than 95% is sent to the finished product bin 10 for storage; The heavy particulate matter that does not meet the requirements is sent to the second screening machine 11 for re - sorting;

[0022] S6: The oversize materials of the second screening machine 11 are mainly elemental aluminum and are stored separately in the elemental aluminum bin 12. The undersize materials of the second screening machine 11 are sent back to the buffer bin 7 and then finely ground again.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pretreatment system for block waste in an electrolytic aluminum plant, characterized in that, It includes a vibrating feeder, a jaw crusher, a cone crusher, a first iron remover, and a first screening machine connected in sequence. The oversize material outlet of the first screening machine is connected to the feeding end of the manual sorting platform. The undersize material outlet of the first screening machine is communicated with the inlet of the buffer tank. The outlet of the buffer tank is communicated with the inlet of the dry ball mill. The outlet of the dry ball mill is communicated with the inlet of the powder tank. The outlet of the powder tank is communicated with the inlet of the powder separator. The light material outlet of the powder separator is communicated with the inlet of the finished product bin. The heavy material outlet of the powder separator is communicated with the inlet of the second screening machine. The oversize material outlet of the second screening machine is communicated with the inlet of the elemental aluminum bin. The undersize material outlet of the second screening machine is communicated with the inlet of the buffer tank.

2. The pre-treatment system for bulk waste in an electrolytic aluminum plant according to claim 1, wherein, The discharging end of the manual sorting platform is communicated with the inlet of the cone crusher.

3. The pre-treatment system for block waste in an electrolytic aluminum plant according to claim 1 or 2, characterized in that, It further includes a second iron remover arranged between the outlet of the powder tank and the inlet of the powder separator. The outlet of the dry ball mill is communicated with the inlet of the second iron remover. The outlet of the second iron remover is communicated with the inlet of the powder separator.

4. The pretreatment system for block waste in an electrolytic aluminum plant according to claim 3, characterized in that, The outlet of the powder tank and the inlet of the powder separator are communicated through a pipeline. The second iron remover is a pipeline type iron remover arranged on the pipeline.

5. The pretreatment system for block waste in an electrolytic aluminum plant according to claim 1, 2 or 4, characterized in that, The first iron remover is an electromagnetic iron remover.

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