Denitrified aluminum ash component sorting system

Abstract

The utility model discloses a denitrification aluminum ash component sorting system which comprises a size mixing and stirring tank, a spiral chute and a plurality of diversion trenches, and the size mixing and stirring tank is used for stirring aluminum ash and water into size; the spiral chute spirally extends from top to bottom and is used for downwards and spirally guiding and conveying the slurry, so that components with different densities in the slurry are separated under the action of gravity and centrifugal force; and the plurality of diversion trenches are sequentially arranged at a discharge port at the bottom end of the spiral chute along the radial direction of the spiral chute, and are respectively used for receiving slurry of various components separated on the spiral chute. According to the component sorting system for the denitrified aluminum ash, various components in the denitrified aluminum ash can be sorted to purify aluminum oxide, and the utilization value of the aluminum oxide in the denitrified aluminum ash is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of denitrification aluminum ash component sorting and processing equipment, and in particular to a denitrification aluminum ash component sorting system. Background Technology

[0002] A large amount of aluminum ash is generated during the production of aluminum profiles by melting and casting and electrolytic aluminum. Aluminum ash contains components such as metallic aluminum, aluminum oxide, aluminum nitride, magnesium oxide, silicon oxide, iron, iron oxide and calcium oxide. After the aluminum ash is denitrified by wet harmless treatment, there are currently several ways to utilize it: (1) landfill in buildings; (2) aluminum source for cement plants; (3) aluminum source for water purification agents; (4) ceramic raw materials.

[0003] However, method (1) does not reflect the value of aluminum resources and is a waste; method (2) the amount used is limited because the salt content in aluminum ash affects the quality of cement; method (3) the aluminum ash contains metallic aluminum which reacts with acid to produce hydrogen, which is prone to combustion and explosion, posing a great safety risk; method (4) the color of ceramic raw materials turns yellow or black because they contain iron, cracks are produced because they contain calcium, and pores are produced because they contain salt.

[0004] Therefore, in addition to alumina, denitrification aluminum ash contains a variety of impurities, which limits its use and reduces the utilization value of alumina in the denitrification aluminum ash. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a denitrification aluminum ash component sorting system, which can sort various components in denitrification aluminum ash to purify alumina and improve the utilization value of alumina in denitrification aluminum ash.

[0006] A denitrification aluminum ash composition sorting system according to an embodiment of the present invention includes:

[0007] A slurry mixing tank is used to mix denitrified aluminum ash with water to form a slurry.

[0008] Spiral chute, spirally extended from top to bottom, is used to guide and convey slurry downwards so that components of different densities in the slurry are separated under the action of gravity and centrifugal force;

[0009] Multiple guide channels are arranged in sequence along the radial direction of the spiral chute at the bottom outlet of the spiral chute, and are used to receive the slurry of various components separated on the spiral chute.

[0010] A denitrification aluminum ash composition sorting system according to an embodiment of the present invention has at least the following beneficial effects:

[0011] 1. This utility model, by setting up a slurry mixing tank, achieves thorough mixing of denitrified aluminum ash and water to form a uniform slurry, which is beneficial to improving the fluidity of various components in the denitrified aluminum ash, thereby improving the efficiency of subsequent separation.

[0012] 2. By setting up a spiral chute, this utility model combines the effects of gravity and centrifugal force during the conveying of slurry on the spiral chute, thereby achieving efficient sorting of components with different densities.

[0013] 3. This utility model achieves multi-stage precise flow separation by setting multiple guide channels arranged radially along the spiral chute, ensuring effective separation and collection of different components.

[0014] 4. This utility model, through the combination of a slurry mixing tank, a spiral chute, and multiple guide channels, can separate various components in aluminum ash to purify alumina and improve the utilization value of alumina in aluminum ash.

[0015] According to some embodiments of the present invention, the discharge end of the spiral chute is provided with a triangular guide, and the two sides of the triangular guide are respectively used to form discharge ports.

[0016] The advantages of this invention are: by setting a triangular guide at the discharge end of the spiral chute, with the two sides of the triangular guide forming discharge ports respectively, the double-sided diversion design of the triangular guide effectively prevents slurry accumulation. At the same time, the acute angle structure of the triangular guide enhances the diversion guidance and improves the sorting accuracy. Moreover, it can avoid secondary mixing of materials of different densities at the discharge port.

[0017] According to some embodiments of this utility model, three triangular guides are provided, and four discharge ports are formed between the three triangular guides and between the sidewalls of the triangular guides and the spiral chute, with one discharge port corresponding to one guide chute.

[0018] The advantages of this invention are: by setting three triangular guides, four discharge ports are formed between the three triangular guides and between the side walls of the triangular guides and the spiral chute. Each discharge port corresponds to one guide chute. Thus, the three triangular guides form four discharge ports, realizing multi-gradient fine classification. At the same time, the increase in discharge ports can adapt to the fine sorting and recycling of various components of aluminum ash.

[0019] According to some embodiments of this utility model, the angle of the triangular guide can be adjusted.

[0020] The advantage of this invention is that by making the angle of the triangular diverter adjustable, the angle of the triangular diverter can be adjusted according to the dividing line of different components on the spiral chute to guide materials of different components into the corresponding material diverting trough, thereby achieving effective separation of light and heavy components.

[0021] According to some embodiments of this utility model, the diameter of the spiral chute is greater than 0.8m and the height is greater than 2m.

[0022] The advantages of this invention are that by making the diameter of the spiral chute greater than 0.8m and the height greater than 2m, the large diameter design ensures that the material layer is fully expanded, increasing the sorting space. At the same time, the height of more than 2m ensures sufficient separation time, improving sorting efficiency.

[0023] According to some embodiments of the present invention, a fluid equalizer is provided at the top feed inlet of the spiral chute, and the fluid equalizer is used to uniformly introduce the slurry into the spiral chute.

[0024] The advantages of this invention are: by setting a fluid equalizer at the top feed inlet of the spiral chute, the fluid equalizer is used to uniformly introduce the slurry into the spiral chute. Thus, the fluid equalizer can ensure uniform distribution of the slurry, eliminate the phenomenon of flow deviation, maintain a stable flow distribution, improve the separation stability, and avoid the decrease in separation efficiency caused by local overload.

[0025] According to some embodiments of the present invention, a centrifugal pump is provided between the slurry mixing tank and the top feed inlet of the spiral chute, and the centrifugal pump is used to transport the slurry in the slurry mixing tank to the top feed inlet of the spiral chute.

[0026] The advantages of this invention are: by installing a centrifugal pump between the mixing tank and the top feed inlet of the spiral chute, the centrifugal pump is used to transport the slurry in the mixing tank to the top feed inlet of the spiral chute. Thus, the centrifugal pump can provide a stable conveying pressure, ensure continuous production, and overcome the elevation difference to achieve forced conveying, thereby expanding the applicability of the system.

[0027] According to some embodiments of the present invention, a regulating valve is provided between the centrifugal pump and the spiral chute, and the regulating valve is used to regulate the slurry conveying flow rate.

[0028] The advantages of this invention are: by setting an adjusting valve between the centrifugal pump and the spiral chute, the adjusting valve is used to adjust the slurry conveying flow rate. Thus, the valve adjustment can achieve precise flow control, match the sorting requirements, and adjust the processing volume in real time according to the slurry concentration. The operation is flexible and prevents the separation efficiency from being reduced due to overload.

[0029] According to some embodiments of the present invention, a rotor flow meter is provided between the regulating valve and the spiral chute, and the rotor flow meter is used to display the slurry conveying flow rate.

[0030] The advantage of this invention is that by installing a rotor flow meter between the regulating valve and the spiral chute, the rotor flow meter displays the slurry conveying flow rate. Thus, the flow rate visualization of the rotor flow meter enables precise control of process parameters, ensuring the stability and repeatability of system operating parameters.

[0031] According to some embodiments of the present invention, at least two slurry mixing tanks are provided, and the at least two slurry mixing tanks alternately feed slurry to the spiral chute.

[0032] The advantages of this invention are: by setting at least two slurry mixing tanks, which alternately feed slurry to the spiral chute, continuous production is achieved by alternating feeding from the two slurry mixing tanks, eliminating intermittent time, and ensuring the capacity matching between the pretreatment and sorting processes.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a denitrification aluminum ash component sorting system according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 The enlarged view at point A is shown;

[0037] Figure 3 for Figure 2 The diagram shows the structure of the triangular flow guide.

[0038] Figure reference numerals: 100-mixing tank, 110-spiral chute, 120-guide channel, 130-triangular guide, 140-fluid equalizer, 150-centrifugal pump, 160-regulating valve, 170-rotameter. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] A denitrification aluminum ash component sorting system according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The present invention aims to provide an embodiment of a denitrification aluminum ash component sorting system.

[0045] In this embodiment, a denitrification aluminum ash component sorting system mainly includes a slurry mixing tank 100, a spiral chute 110, and a guide channel 120.

[0046] The slurry mixing tank 100 is used to mix denitrified aluminum ash with water to form a slurry.

[0047] In this embodiment, a slurry mixing tank 100 is set up to fully mix the denitrified aluminum ash with water to form a uniform slurry. This helps to improve the fluidity of various components in the denitrified aluminum ash, thereby improving the efficiency of subsequent separation.

[0048] Specifically, the mixing tank 100 may include a tank body, a stirring paddle rotatably disposed within the tank body, and a first motor that drives the stirring paddle to rotate.

[0049] Furthermore, the tank body can be made of fiberglass, PP, PE, or low-carbon steel.

[0050] The spiral chute 110 extends spirally from top to bottom and is used to guide and transport the slurry downwards in a spiral manner so that components of different densities in the slurry are separated under the action of gravity and centrifugal force.

[0051] In this embodiment, by setting up a spiral chute 110, the slurry is transported on the spiral chute 110, which combines the effects of gravity and centrifugal force to achieve efficient sorting of components with different densities.

[0052] In some specific embodiments, at least two slurry mixing tanks 100 are provided, and the at least two slurry mixing tanks 100 alternately feed slurry to the spiral chute 110. Thus, the two slurry mixing tanks 100 alternately supply material to achieve continuous production, eliminate intermittent time, and at the same time ensure the capacity matching between the pretreatment process and the sorting process.

[0053] In some specific embodiments, the spiral chute 110 has a diameter greater than 0.8m and a height greater than 2m. Thus, the large diameter design ensures that the material layer is fully expanded, increasing the sorting space, while the height of more than 2m ensures sufficient separation time, improving sorting efficiency.

[0054] In some specific embodiments, a fluid equalizer 140 is provided at the top feed inlet of the spiral chute 110. The fluid equalizer 140 is used to uniformly introduce the slurry into the spiral chute 110. Thus, the fluid equalizer 140 can ensure uniform distribution of slurry, eliminate flow deviation, maintain stable flow distribution, improve sorting stability, and avoid the decrease in separation efficiency caused by local overload.

[0055] In some specific embodiments, a centrifugal pump 150 is provided between the top feed inlet of the mixing tank 100 and the spiral chute 110. The centrifugal pump 150 is used to transport the slurry in the mixing tank 100 to the top feed inlet of the spiral chute 110. Thus, the centrifugal pump 150 can provide a stable conveying pressure to ensure continuous production, thereby overcoming the elevation difference to achieve forced conveying and expanding the applicability of the system.

[0056] Furthermore, a regulating valve 160 is provided between the centrifugal pump 150 and the spiral chute 110. The regulating valve 160 is used to regulate the slurry conveying flow rate. Thus, the valve regulation can achieve precise flow control to match the sorting requirements. The processing volume can be adjusted in real time according to the slurry concentration, making the operation flexible and preventing the reduction of separation efficiency due to overload.

[0057] Furthermore, a rotor flow meter 170 is installed between the regulating valve 160 and the spiral chute 110. The rotor flow meter 170 is used to display the slurry conveying flow rate. Thus, the flow visualization of the rotor flow meter 170 enables precise control of process parameters, ensuring the stability and repeatability of system operating parameters.

[0058] For the guide channel 120, multiple guide channels 120 are provided. Multiple guide channels 120 are arranged in sequence along the radial direction of the spiral chute 110 at the bottom outlet of the spiral chute 110, and are used to receive the slurry of various components separated on the spiral chute 110.

[0059] In this embodiment, multiple guide channels 120 are set up. The guide channels 120 arranged radially along the spiral chute 110 achieve multi-stage precise flow separation, ensuring effective separation and collection of different components.

[0060] In some specific embodiments, the discharge end of the spiral chute 110 is provided with a triangular guide 130. The two sides of the triangular guide 130 are used to form discharge ports. Thus, the double-sided diversion design of the triangular guide 130 effectively prevents slurry accumulation. At the same time, the acute angle structure of the triangular guide 130 enhances the diversion guidance and improves the sorting accuracy. Moreover, it can avoid secondary mixing of materials of different densities at the discharge port.

[0061] Furthermore, three triangular guides 130 are provided, and four discharge ports are formed between the three triangular guides 130 and between the side walls of the triangular guides 130 and the spiral chute 110. Each discharge port corresponds to one guide chute 120. Thus, the three triangular guides 130 form four discharge ports, realizing multi-gradient fine classification. At the same time, the increase in discharge ports can adapt to the fine sorting and recycling of various components of aluminum ash.

[0062] It needs to be explained that, under the influence of gravity and centrifugal force, the components of different densities in the slurry are separated as follows: iron and iron oxide particles with a density of 7.9-5.6 g / mL flow from the first outlet along the inner side of the spiral chute 110 to the corresponding guide trough 120 and then into the iron storage tank; aluminum oxide with a density of 3.5-4.05 g / mL flows from the second outlet along the inner side of the spiral chute 110 to the corresponding guide trough 120 and then into the aluminum oxide storage tank; calcium oxide and aluminum particles with a density of 2.7-3.3 g / mL flow from the third outlet along the inner side of the spiral chute 110 to the corresponding guide trough 120 and then into the calcium storage tank; and silicon oxide with a density of 2.2-2.6 g / mL flows from the outlet on the outer side of the spiral chute 110 to the corresponding guide trough 120 and then into the silicon storage tank. Thus, the different components of aluminum ash are separated.

[0063] Furthermore, the angle of the triangular diverter 130 is adjustable, so that the angle of the triangular diverter can be adjusted according to the boundary line of different components on the spiral chute 110 to guide materials of different components into the corresponding component material diverter 120, thereby achieving effective separation of light and heavy components.

[0064] Specifically, the triangular flow divider 130 may include a first flow divider plate, a second flow divider plate, and a connecting plate that are hinged in sequence. The first flow divider plate is retractable, the second flow divider plate is retractable, and the first and second flow dividers plate are respectively used to form the discharge port. The hinges between the first and second flow dividers plate, between the second flow divider plate and the connecting plate, and between the connecting plate and the first flow divider plate have rotational damping force, thereby facilitating the adjustment of the angle of the triangular flow divider by external force and the fixing of the angle of the triangular flow divider by rotational damping force.

[0065] In some specific embodiments, a plate and frame diaphragm filter press can also be provided. The plate and frame diaphragm filter press is used to dewater the sorted alumina slurry, thereby facilitating the subsequent packaging, transportation and use of the alumina.

[0066] In this embodiment, the combination of the mixing tank 100, the spiral chute 110 and multiple guide channels 120 can separate various components in aluminum ash to purify alumina and improve the utilization value of alumina in aluminum ash.

[0067] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0069] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0070] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0071] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A denitrified aluminum dross constituent separation system characterized by, The utility model relates to a slurry mixing and separating device, comprising: a slurry mixing tank (100) for mixing the denitrified aluminum ash with water into slurry; a spiral chute (110) extending downward for spiral guiding and conveying the slurry downward so that the components of different densities in the slurry are separated under the action of gravity and centrifugal force; a plurality of guide grooves (120) arranged in the radial direction of the spiral chute (110) at the bottom discharge port of the spiral chute (110) for receiving the slurry of various components separated in the spiral chute (110).

2. A denitrified aluminum dross composition separation system as defined in claim 1, wherein, The discharge end of the spiral chute (110) is provided with a triangular flow guide (130), and the two sides of the triangular flow guide (130) are used to form discharge ports.

3. A denitrified aluminum dross composition separation system according to claim 2, wherein, The triangular flow guide (130) is provided with three triangular flow guides (130), and four discharge ports are formed between the three triangular flow guides (130) and the side wall of the spiral chute (110), one discharge port corresponding to one guide groove (120).

4. A denitrified aluminum dross composition separation system according to claim 2, wherein, The angle of the triangular flow guide (130) is adjustable.

5. A denitrified aluminum dross composition separation system according to claim 1, wherein, The diameter of the spiral chute (110) is greater than 0.8 m, and the height is greater than 2 m.

6. A denitrified aluminum dross composition separation system according to claim 1, wherein, The top inlet of the spiral chute (110) is provided with a fluid equalizer (140) for uniformly guiding the slurry into the spiral chute (110).

7. A denitrified aluminum dross composition separation system according to claim 1, wherein, A centrifugal pump (150) is arranged between the slurry mixing tank (100) and the top inlet of the spiral chute (110) for conveying the slurry in the slurry mixing tank (100) to the top inlet of the spiral chute (110).

8. A denitrified aluminum dross composition separation system according to claim 7, wherein, An adjusting valve (160) is arranged between the centrifugal pump (150) and the spiral chute (110) for adjusting the conveying flow of the slurry.

9. A denitrified aluminum dross composition separation system according to claim 8, wherein, A rotor flowmeter (170) is arranged between the adjusting valve (160) and the spiral chute (110) for displaying the conveying flow of the slurry.

10. A denitrified aluminum dross composition separation system according to claim 1, wherein, The slurry mixing tank (100) is provided with at least two slurry mixing tanks (100), and the at least two slurry mixing tanks (100) alternately convey the slurry to the spiral chute (110).

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