CN215784918U - Aluminum oxide impurity removing device - Google Patents
Aluminum oxide impurity removing device Download PDFInfo
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- CN215784918U CN215784918U CN202121405325.XU CN202121405325U CN215784918U CN 215784918 U CN215784918 U CN 215784918U CN 202121405325 U CN202121405325 U CN 202121405325U CN 215784918 U CN215784918 U CN 215784918U
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- alumina
- impurity removal
- box
- boiling
- impurity
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- 239000012535 impurity Substances 0.000 title claims abstract description 83
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000009835 boiling Methods 0.000 claims abstract description 37
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000001556 precipitation Methods 0.000 claims abstract description 20
- 230000003139 buffering effect Effects 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 244000007853 Sarothamnus scoparius Species 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses an alumina impurity removal device which comprises a separation chute and an impurity removal box, wherein the separation chute is obliquely arranged, and the impurity removal box is butted at one end, which is lower than the separation chute; a filter screen is arranged in the separation chute; a boiling plate is arranged in the impurity removing box near the bottom of the box, the impurity removing box is divided into an upper part and a lower part by the boiling plate, and high-pressure air is introduced below the impurity removing box; a guide plate is vertically arranged on the boiling plate, and a gap is reserved between the top end of the guide plate and the top of the impurity removal box; the guide plate divides the precipitation buffering impurity removing chamber into a boiling precipitation area and a material control area. According to the utility model, the problem that the conveying chute and the pipeline are blocked by large impurities of the aluminum electrolysis purification system can be solved through the two-stage filtration and impurity removal system of the separation chute and the impurity removal box, and the influence of fine impurities on the pneumatic chute is also solved; meanwhile, the adjustable alumina device is matched for use, the manual operation is convenient, any spare parts and maintenance cost are basically not needed after the operation is finished, and the alumina purification effect and the feeding balance problem of the electrolytic cell are ensured.
Description
Technical Field
The utility model relates to the technical field of aluminum alloy production auxiliary equipment, in particular to a device for filtering and removing impurities from aluminum oxide.
Background
The fresh alumina transferring mode used in the electrolytic purification process mainly comprises three modes of container material, large bag material, bulk tank material and the like, impurities can be mixed inevitably in the alumina production process, and secondary cleaning and other reasons are added in the transferring process, so that the impurity content in the alumina is high, and the blockage of the alumina in a pneumatic chute and a blanking pipeline is easily caused if filtration and impurity removal are not adopted. Secondly, the feeding amount of the alumina must be controlled and constantly supplied according to the daily consumption of the electrolytic cell and the size of the storage bin, and so the insufficient feeding amount can cause so in the electrolytic flue gas purification process2Not adsorbing pollutantsAnd the pollutant discharge is not up to standard.
Although aluminum electrolysis enterprises are provided with impurity removal and aluminum oxide control devices in the aluminum oxide feeding process, impurities in aluminum oxide cannot be effectively removed due to the single impurity removal equipment (such as single steel wire mesh filtration) and frequent failure of feeding equipment, and the stability and constancy of aluminum oxide feeding are ensured. Once impurities are mixed in the alumina feeding pneumatic chute or the blanking pipe, the alumina feeding is easy to be cut off or unstable, and the so in the purification production process is influenced2The control of pollution sources mainly comprises the following aspects:
1. the large impurities such as broom handle, plastic and the like in the alumina block the feed opening and the alumina feed pipe, so that the alumina is cut off, the electrolysis flue gas cannot be fully mixed and absorbed with the alumina, and so that so is caused2The standard exceeding phenomenon occurs in a short time, and the environmental protection requirement cannot be met.
2. After fine particle impurities in the alumina are precipitated on a pneumatic chute boiling plate to form a certain thickness, the chute alumina is not conveyed smoothly, the insufficient conveying amount of the alumina influences the purification of the electrolytic flue gas, so that so is caused2And (5) pollutant overproof emission.
3. Due to the influence of the balance of the fluorine-loaded alumina bin space and the daily demand of the electrolytic cell alumina, the feeding amount of the electrolytic flue gas purification alumina is equal to so2The control must be in a controllable range, and the prior alumina impurity removal and material quantity regulation equipment comprises: the disk feeder and the like have frequent equipment faults due to the influence of impurities, are basically not used or in a stop state, and are mainly controlled by the wind pressure of the chute.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art and provides an alumina impurity removal device which is simple in structure, convenient to operate, high in filtration and impurity removal efficiency, good in effect and low in equipment cost.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an aluminium oxide edulcoration device which characterized in that: the device comprises a separation chute and an impurity removal box, wherein the separation chute is obliquely arranged, and the impurity removal box is butted at one lower end of the separation chute; a filter screen is arranged in the separation chute, and the high end of the filter screen is butted with a feed inlet of the alumina; a boiling plate is arranged in the impurity removing box near the bottom of the box, the impurity removing box is divided into an upper part and a lower part by the boiling plate, a precipitation buffering impurity removing chamber is arranged above the boiling plate, and a gas chamber is arranged below the boiling plate and is connected with high-pressure air through an air inlet pipe; a guide plate is vertically arranged on the boiling plate, and a section of space is reserved between the top end of the guide plate and the top of the impurity removal box to form a channel for alumina to pass through; the guide plate separates into boiling precipitation district and accuse material district with sediment buffering edulcoration room, and the boiling precipitation district docks with the low side of separation chute, and the edulcoration case outside is provided with discharging pipe intercommunication accuse material district.
Furthermore, a slag discharge port is respectively arranged at the position of the side wall of the impurity removing box, which is aligned to the boiling precipitation zone, and the position of the separation chute, which is close to the lower end of the filter screen, so that the impurities can be conveniently and manually cleaned.
Further, the filter screen is made of iron wire, the inclination angle of the filter screen is more than 40 degrees, and the inclination angle is determined according to the angle of repose of alumina, so that large impurities such as broom sticks and plastic strips can be removed.
Furthermore, the lower end of the separation chute is connected with the impurity removal box through a discharging pipe, and the pipe orifice of the discharging pipe is aligned to the boiling precipitation area.
Furthermore, a flashboard valve type control valve for adjusting the flow of the filtered and impurity-removed alumina is arranged in the discharge pipe.
Furthermore, an observation port is arranged on the discharge pipe so as to conveniently observe the discharge condition.
Further, be provided with the viewing aperture on the edulcoration case, the viewing aperture is aimed at accuse material district to can in time observe the inside condition of edulcoration case.
Furthermore, a dust collecting pipe is arranged on the impurity removing box and is aligned to the material control area so as to increase the flowability of the aluminum oxide.
The aluminum oxide is filtered by the iron wire filter screen and then enters the separation chute, and the filtered impurities roll down to a slag discharge port at the lower end of the separation chute along the filter screen under the action of gravity and are manually removed from the slag discharge port; after the alumina filtered through the first layer enters a boiling precipitation zone of the impurity removal box, under the action of a boiling plate, fine impurities are precipitated at the bottom and are periodically removed from a slag discharge port of the impurity removal box by manpower, and the alumina after boiling flows into a material control zone through a guide plate. The clean alumina filtered twice enters a flue gas purification system by manual operation according to proper amount under the control of a flashboard valve type alumina material quantity control valve, and the material balance is ensured.
According to the utility model, the problem that the conveying chute and the pipeline are blocked by large impurities (such as a broom rod and plastic strips) of the aluminum electrolysis purification system can be solved through the two-stage filtration and impurity removal system of the separation chute and the impurity removal box, and meanwhile, the influence of fine impurities on the pneumatic chute is also solved, the impurity removal rate can reach 99%, and the problem of material blockage or unsmooth conveying of the purification system in the alumina conveying process is reduced; meanwhile, the adjustable alumina device is matched for use, the flow of alumina can be adjusted and controlled, the manual operation is convenient, any spare parts and maintenance cost are basically not needed after the operation is finished, and the alumina purification effect and the feeding balance problem of the electrolytic cell are ensured.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure, 1 is a separation chute, 11 is a slag discharge port, 2 is a filter screen, 3 is an impurity removal box, 31 is a precipitation buffering impurity removal chamber, 32 is an air chamber, 33 is an observation port, 34 is a slag discharge port, 4 is a boiling plate, 5 is a blanking pipe, 6 is an air inlet pipe, 7 is a discharge pipe, 71 is a control valve, 72 is an observation port, 8 is a guide plate, and 9 is a dust collection pipe.
Detailed Description
In the embodiment, referring to fig. 1, the alumina impurity removing device comprises a separation chute 1 and an impurity removing box 3, wherein the separation chute 1 is obliquely arranged, and the impurity removing box 3 is butted at one lower end of the separation chute 1; a filter screen 2 is arranged in the separation chute 1, and the high end of the filter screen 2 is butted with a feed inlet of alumina; a boiling plate 4 is arranged in the impurity removing box 3 near the bottom of the box, the impurity removing box 3 is divided into an upper part and a lower part by the boiling plate 4, a precipitation buffering impurity removing chamber 31 is arranged on the upper part, an air chamber 32 is arranged on the lower part, and the air chamber 32 is connected with high-pressure air through an air inlet pipe 6; a guide plate 8 is vertically arranged on the boiling plate 4, and a section of space is reserved between the top end of the guide plate 8 and the top of the impurity removing box 4 to form a channel for alumina to pass through; the guide plate 8 separates into boiling precipitation district and accuse material district with the buffering edulcoration room 31 that deposits, and the boiling precipitation district docks with the low side of separation chute 1, and edulcoration case 3 outside is provided with discharging pipe 7 intercommunication accuse material district.
The positions of the side wall of the impurity removing box 3, which is aligned with the boiling precipitation area, and the positions of the separation chute 1, which are close to the lower end of the filter screen 2, are respectively provided with a slag discharge port 34 and a slag discharge port 11, which are convenient for manually cleaning impurities.
The filter screen 2 is made of iron wire, the inclination angle of the filter screen is more than 40 degrees, the inclination angle is determined according to the repose angle of alumina, and the filter screen is used for removing large-sized impurities such as broom sticks and plastic strips.
The lower end of the separation chute 1 is connected with the impurity removing box 3 through a discharging pipe 5, and the pipe orifice of the discharging pipe 5 is aligned to the boiling and precipitation area.
A gate valve type control valve 31 for adjusting the flow rate of the filtered and purified alumina is provided in the discharge pipe 7. An observation opening 72 is provided in the tapping pipe 7 in order to be able to easily observe the tapping situation.
Be provided with viewing aperture 33 on edulcoration case 3, viewing aperture 33 aligns accuse material district to can in time observe the inside condition of edulcoration case 3.
And a dust collecting pipe 9 is arranged on the impurity removing box 3, and the dust collecting pipe 9 is aligned to the material control area so as to increase the fluidity of the aluminum oxide.
The aluminum oxide is filtered by the iron wire filter screen 2 and then enters the separation chute 1, and the filtered impurities roll down to the slag discharge port 11 at the lower end of the separation chute 1 along the filter screen 2 under the action of gravity and are manually removed from the slag discharge port 11; after the alumina filtered through the first layer enters the boiling precipitation zone of the impurity removal box 3, under the action of the boiling plate 4, fine impurities are precipitated at the bottom and are periodically removed from the slag discharge port 34 of the impurity removal box 3 by manpower, and the alumina after boiling flows into the material control zone through the guide plate 8. The clean alumina after twice filtration enters a flue gas purification system by manual operation according to proper amount under the control of a flashboard valve type alumina material amount control valve 7, and the material balance is ensured.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Claims (8)
1. The utility model provides an aluminium oxide edulcoration device which characterized in that: the device comprises a separation chute and an impurity removal box, wherein the separation chute is obliquely arranged, and the impurity removal box is butted at one lower end of the separation chute; a filter screen is arranged in the separation chute, and the high end of the filter screen is butted with a feed inlet of the alumina; a boiling plate is arranged in the impurity removing box near the bottom of the box, the impurity removing box is divided into an upper part and a lower part by the boiling plate, a precipitation buffering impurity removing chamber is arranged above the boiling plate, and a gas chamber is arranged below the boiling plate and is connected with high-pressure air through an air inlet pipe; a guide plate is vertically arranged on the boiling plate, and a section of space is reserved between the top end of the guide plate and the top of the impurity removal box to form a channel for alumina to pass through; the guide plate separates into boiling precipitation district and accuse material district with sediment buffering edulcoration room, and the boiling precipitation district docks with the low side of separation chute, and the edulcoration case outside is provided with discharging pipe intercommunication accuse material district.
2. An alumina impurity removal device according to claim 1, wherein: the side wall of the impurity removing box is aligned with the boiling precipitation area, and the separation chute is provided with a slag discharge port close to the lower end of the filter screen.
3. An alumina impurity removal device according to claim 1, wherein: the filter screen is the wire netting, and its inclination is for being greater than 40 degrees.
4. An alumina impurity removal device according to claim 1, wherein: the lower end of the separation chute is connected with the impurity removal box through a discharging pipe, and the pipe orifice of the discharging pipe is aligned to the boiling precipitation area.
5. An alumina impurity removal device according to claim 1, wherein: a control valve for adjusting the flow of the filtered and purified alumina is arranged in the discharge pipe.
6. An alumina impurity removal device according to claim 1, wherein: an observation port is arranged on the discharge pipe.
7. An alumina impurity removal device according to claim 1, wherein: an observation port is arranged on the impurity removing box and is aligned to the material control area.
8. An alumina impurity removal device according to claim 1, wherein: and a dust collecting pipe is arranged on the impurity removing box and is aligned to the material control area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121405325.XU CN215784918U (en) | 2021-06-23 | 2021-06-23 | Aluminum oxide impurity removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121405325.XU CN215784918U (en) | 2021-06-23 | 2021-06-23 | Aluminum oxide impurity removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215784918U true CN215784918U (en) | 2022-02-11 |
Family
ID=80178234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121405325.XU Active CN215784918U (en) | 2021-06-23 | 2021-06-23 | Aluminum oxide impurity removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215784918U (en) |
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2021
- 2021-06-23 CN CN202121405325.XU patent/CN215784918U/en active Active
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