CN113680662A - Device for recycling industrial waste residue superfine processing - Google Patents
Device for recycling industrial waste residue superfine processing Download PDFInfo
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- CN113680662A CN113680662A CN202111011900.2A CN202111011900A CN113680662A CN 113680662 A CN113680662 A CN 113680662A CN 202111011900 A CN202111011900 A CN 202111011900A CN 113680662 A CN113680662 A CN 113680662A
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- superfine
- volute
- ball mill
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- industrial waste
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
- B02C17/1865—Adding fluid, other than for crushing by fluid energy after crushing
- B02C17/187—Adding fluid, other than for crushing by fluid energy after crushing with recirculation of material to crushing zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a device for recycling industrial waste residue superfine processing, and belongs to the technical field of superfine powder preparation process equipment. Comprises an ultrafine ball mill, an ultrafine powder concentrator, a bag dust collector and a high-pressure centrifugal fan; the superfine ball mill is connected with the superfine powder concentrator, the superfine powder concentrator is connected with the bag dust collector, the bag dust collector is connected with the high-pressure centrifugal fan, and the superfine powder concentrator is also connected with the superfine ball mill through the metering belt conveyor. The invention has the advantages of large single machine processing capacity, good grinding effect, high grading efficiency and grading precision, adjustable grading particle size range, small equipment resistance and the like.
Description
Technical Field
The invention provides a device for recycling industrial waste residue superfine processing, and belongs to the technical field of superfine powder preparation process equipment.
Background
The demand of the application of the ultrafine fly ash, the ultrafine slag powder and the like in the domestic and foreign building material industries is increased year by year, the output of the existing equipment is small, and the existing equipment cannot be recycled and reprocessed, thereby causing waste.
SUMMARY OF THE PATENT FOR INVENTION
In order to solve the problems, the invention provides a device for recycling the superfine processing of industrial waste residues, which has the advantages of large single-machine processing capacity, good grinding effect, high grading efficiency and grading precision, adjustable grading particle size range, small equipment resistance and the like.
In order to achieve the purpose, the invention provides the following technical scheme: a device for recycling industrial waste residue superfine processing comprises a superfine ball mill, a superfine powder concentrator, a bag dust collector and a high-pressure centrifugal fan; the superfine ball mill is connected with the superfine powder concentrator, the superfine powder concentrator is connected with the bag dust collector, the bag dust collector is connected with the high-pressure centrifugal fan, and the superfine powder concentrator is also connected with the superfine ball mill through the metering belt conveyor.
Preferably, the superfine ball mill comprises a transmission part, a feeding device, a cylinder part and an anti-blocking type material-gas separation device which are connected in sequence; the barrel body is internally provided with lining plates, an activating lining plate is arranged between the lining plates, the bottom of the barrel body is provided with a fine section grinding medium, and the outlet of the barrel body is provided with a discharging grid plate. The lining plate of the mill is made of wear-resistant structural parts through precision machining, so that the thickness and the weight of the lining plate are reduced, the effective volume of the mill is enlarged, and the filling rate and the grinding efficiency of the mill are improved. The activation lining plate effectively improves the working of all the grinding bodies participating in the movement, and improves the grinding effect.
Preferably, an outlet end of the cylinder part is provided with an anti-blocking material-gas separation device, the material-gas separation device comprises a reverse material return cone, a reverse discharging spiral cylinder and an air adjusting pipeline which are sequentially connected, and the reverse discharging spiral cylinder comprises a discharging hollow shaft and a reverse discharging spiral blade; an air adjusting valve is arranged on the air adjusting pipeline; one end of the air adjusting pipeline is inserted into the reverse discharging spiral cylinder. The discharge end of the mill adopts an anti-blocking type material-gas separation device, qualified fine powder can be timely taken out of the mill, coarse powder and ground micro-media can be timely separated out and then returned to the mill through a material returning device, and the micro-media are prevented from flowing to a grinding head and blocking a discharge grate plate;
preferably, the superfine powder concentrator comprises a support, a driving device is arranged above the support, an upper shell is arranged below the support, a rotor connected with the driving device is arranged in the upper shell, the upper part of the upper shell is connected with a fine powder outlet pipe and the support, the lower part of the upper shell is connected with a middle shell, a flow guide cone is arranged in the middle shell, the lower part of the middle shell is connected with a secondary air grading volute, the lower part of the secondary air grading volute is connected with a lower shell, an inner cylinder is arranged in the lower shell, and the lower part of the lower shell is connected with a blanking air locking valve.
Preferably, the superfine ball mill adopts a single-bin structure, the fineness of the ground material is more than or equal to mesh, and the specification of the grinding medium is less than or equal to mm; the superfine ball mill adopts a single-bin structure, and no bin separation plate is arranged in the mill, so that the running resistance of the mill is effectively reduced. The superfine powder separator adopts a large-scale single-rotor structure, and has the advantages of large single-machine processing capacity, high classification efficiency and low running resistance
Preferably, a low bypass value double sealing device is arranged between an upper shell and a rotor of the superfine powder concentrator, and the low bypass value double sealing device comprises a shell labyrinth sealing ring, a rotor labyrinth sealing ring and an air sealing device. Effectively separate the sorting area and the finished product area.
Preferably, the secondary air grading volute comprises a volute, a vortex stationary blade is arranged in the volute, and air adjusting plates are arranged at two ends of the volute. .
The secondary air grading volute adjusts the air inlet cross section area of natural air through the air adjusting plate, and a strong vortex is formed in the volute under the action of negative pressure suction of the high-pressure centrifugal fan, so that fine powder attached to coarse powder in the volute can be fully selected, and the sorting precision is improved.
Compared with the prior art, the invention has the following advantages:
the fineness of the ground materials is more than or equal to 120 meshes, the requirement of the materials on the specification and size of the grinding media is reduced, the specification of the whole bin of the grinding media is less than or equal to 15mm, and the grinding efficiency is improved. The fineness D97 of the finished product can be arbitrarily controlled and adjusted from 10 mu m to 30 mu m by changing the rotating speed of the rotor; the superfine powder separator is divided into three separation areas of primary separation, secondary separation and final separation, materials are fully separated from bottom to top in the three separation areas, and the separation efficiency and the separation precision are high.
The bag dust collector adopts off-line chamber-separated pulse dust removal, increases the distance between bag cages, prevents secondary adsorption of fine dust, reduces the resistance of the dust collector and prolongs the service life of a filter bag.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the invention;
FIG. 2 is a schematic view of an ultra-fine ball mill according to an embodiment of the present invention;
FIG. 3 is a schematic view of the discharge grate and a block-resistant gas-material separator of the embodiment shown in FIG. 2;
FIG. 4 is a schematic view of an ultrafine powder concentrator according to an embodiment of the present invention;
FIG. 5 is a schematic view of the double seal arrangement of the embodiment of FIG. 4;
FIG. 6 is a sectional view taken along line B-B of the pitch volute of the embodiment of FIG. 4;
in the figure: 31. an ultra-fine ball mill; 32. superfine powder selecting machine; 33. a bag collector; 34. a high pressure centrifugal fan; 35. a metering conveyor belt; 1. a barrel portion; 2. a material gas separation device; 3. a liner plate; 4. activating the lining plate; 5. a fine segment grinding media; 6. a discharging grate plate; 7. a reverse material returning cone; 8. a reverse discharging spiral cylinder; 9. a wind adjusting pipeline; 10. a drive device; 11. a support; 12. a fine powder outlet pipe; 13. a rotor; 14. an upper housing; 15. a flow guide cone; 16. a middle shell; 17. a secondary air grading volute; 18. an inner barrel; 19. a lower housing; 20. a blanking air locking valve; 21. a discharge hollow shaft; 22. a reverse discharging helical blade; 23. a damper valve; 24. a double sealing device; 25. a labyrinth seal ring of the shell; 26. a rotor labyrinth seal ring; 27. a gas seal device; 28. a volute; 29. a vortex stationary blade; 30. air adjusting plate.
Detailed Description
In order to achieve the purpose, the invention provides the following technical scheme: a device for recycling industrial waste residue superfine processing comprises a superfine ball mill 31, a superfine powder concentrator 32, a bag dust collector 33 and a high-pressure centrifugal fan 34; the superfine ball mill 31 adopts a single-bin structure, the fineness of the ground materials is more than or equal to 120 meshes, and the specification of the grinding media is less than or equal to 15 mm; the ultra-fine powder separator 32 adopts a large single-rotor structure.
An air adjusting pipeline 9 of the superfine ball mill 31 is connected with an inner cylinder 18 of a superfine powder separator 32 through a non-standard pipeline, industrial waste residue powder materials with the fineness of more than or equal to 120 meshes are fed into the superfine powder separator 32 from the mill tail for separation, a fine powder outlet pipe 12 at the upper part of the superfine powder separator 32 is connected with an air inlet of a bag dust collector 33 through the non-standard pipeline, an air outlet of the bag dust collector 33 is connected with an air inlet of a high-pressure centrifugal fan 34 through the non-standard pipeline, and qualified superfine powder after separation is collected by the bag dust collector 33 and is pneumatically conveyed into a finished product warehouse; the blanking airlock valve 20 at the bottom of the superfine powder selector 32 is connected with the metering conveyor belt 35 through a non-standard pipeline, the metering conveyor belt 35 conveys the unqualified coarse powder sorted by the superfine powder selector 32 to the feeding device of the superfine ball mill 31, the coarse powder returns to the superfine ball mill 31 for re-grinding, the re-ground material is continuously fed into the superfine powder selector 32 from the tail of the mill for superfine powder sorting, and the process is repeated.
The superfine ball mill 31 comprises a transmission part, a feeding device, a cylinder part 1 and an anti-blocking type material-gas separation device 2 which are connected in sequence; the barrel part 1 is internally provided with lining plates 3, an activating lining plate 4 is arranged between the lining plates 3, the bottom of the barrel part 1 is provided with a fine section grinding medium 5, and the outlet of the barrel part 1 is provided with a discharging grid plate 6
An anti-blocking type material-gas separating device 2 is arranged at the outlet end of the barrel part 1, the material-gas separating device 2 comprises a reverse material returning cone 7, a reverse discharging spiral cylinder 8 and an air adjusting pipeline 9 which are sequentially connected, and the reverse discharging spiral cylinder 8 comprises a discharging hollow shaft 21 and a reverse discharging spiral blade 22; an air adjusting valve 23 is arranged on the air adjusting pipeline 9; one end of the air adjusting pipeline 9 is inserted into the reverse discharging spiral cylinder 8.
The superfine powder separator 32 comprises a support 11, a driving device 10 is arranged above the support 11, an upper shell 14 is arranged below the support 11, a rotor 13 connected with the driving device 10 is arranged in the upper shell 14, the upper part of the upper shell 14 is connected with a fine powder outlet pipe 12 and the support 11, the lower part of the upper shell 14 is connected with a middle shell 16, a guide cone 15 is arranged in the middle shell 16, the lower part of the middle shell 16 is connected with a secondary air grading volute 17, the lower part of the secondary air grading volute 17 is connected with a lower shell 19, an inner barrel 18 is arranged in the lower shell 19, and the lower part of the lower shell 19 is connected with a blanking air locking valve 20.
And a low-bypass-value double sealing device 24 is arranged between the upper shell 14 and the rotor 13 of the superfine powder concentrator 32, and the low-bypass-value double sealing device 24 comprises a shell labyrinth seal ring 25, a rotor labyrinth seal ring 26 and an air sealing device 27.
The secondary air grading volute 17 comprises a volute 28, a vortex stationary blade 29 is arranged in the volute 28, and air adjusting plates 30 are arranged at two ends of the volute 28.
The working principle is as follows:
industrial waste residue powder material with fineness more than or equal to 120 meshes is fed into the superfine powder separator 32 from the mill tail, and is carried into the middle shell 16 of the superfine powder separator 32 by primary air negative pressure airflow of the superfine powder separator 32 consisting of mill internal ventilation and external natural air through the inner cylinder at the bottom of the superfine powder separator 32, the material collides with the guide cone 15 in the middle shell 16 to turn, and is subjected to primary separation because of reduction of ascending air speed and reduction of lifting air force, wherein the coarse powder falls into the secondary air classification volute 17, secondary air of the powder separator consisting of the external natural air forms free vortex in the volute, and the coarse powder is subjected to secondary separation under the double actions of vortex centrifugal force and fan negative pressure suction force, the coarse powder after secondary separation falls into the lower shell 19 and returns to the mill for regrinding through a blanking flap valve, the fine powder reenters the primary classification area of the middle shell 16 and is mixed with the fine powder after primary separation, the fine powder in the grading zone is further separated under the double actions of centrifugal force generated by high-speed rotation of the grading rotor 13 and negative pressure suction of a fan, the powder meeting a certain particle size passes through the gaps of the blades of the rotor 13 and enters the bag dust collector 33 to be collected as superfine powder and sent into a finished product bin, the powder exceeding the certain particle size is beaten out by the blades of the rotor, and then descends to the primary grading zone and the secondary grading zone along the outer wall of the shell for repeated separation until the qualified fine powder is fully separated, and the coarse powder falls into the lower shell 19 and returns to the mill for regrinding through a blanking flap valve. And (4) continuously feeding the reground material into a powder concentrator from the tail of the mill for ultrafine powder separation, and circulating the steps.
The superfine powder separator has high single machine processing capacity, and because the materials are repeatedly separated from bottom to top in the superfine powder separator, the superfine powder separator has the advantages of high classification efficiency and precision, adjustable classification particle size range, small equipment resistance and the like.
The fineness D97 of the finished product is controlled and adjusted from 10 mu m to 30 mu m at will by changing the rotating speed of the rotor, and the specific surface area of the produced ultrafine powder finished product reaches 800-1500 square meters per kg (D97-10 mu m).
The bag dust collector 33 adopts off-line chamber-separated pulse dust removal, so that the bag cage distance is increased, secondary adsorption of fine dust is prevented, the resistance of the dust collector is reduced, and the service life of a filter bag is prolonged. The high-pressure centrifugal fan 34 provides negative pressure and air quantity required by material sorting and conveying.
Claims (7)
1. A device for recycling industrial waste residue superfine processing is characterized by comprising a superfine ball mill (31), a superfine powder concentrator (32), a bag dust collector (33) and a high-pressure centrifugal fan (34); the superfine ball mill (31) is connected with the superfine powder concentrator (32), the superfine powder concentrator (32) is connected with the bag dust collector (33), the bag dust collector (33) is connected with the high-pressure centrifugal fan (34), and the superfine powder concentrator (32) is also connected with the superfine ball mill (31) through the metering belt conveyor (35).
2. The apparatus for industrial residue ultrafine processing recycling according to claim 1, wherein the ultrafine ball mill (31) comprises a transmission part, a feeding device, a barrel part (1), and an anti-blocking type material-gas separation device (2) which are connected in sequence; the grinding device is characterized in that lining plates (3) are arranged in the barrel part (1), an activating lining plate (4) is arranged between the lining plates (3), a fine section grinding medium (5) is arranged at the bottom of the barrel part (1), and a discharging grate plate (6) is arranged at an outlet of the barrel part (1).
3. The device for the superfine processing and recycling of industrial waste residues as claimed in claim 1, wherein an outlet end of the cylinder part (1) is provided with an anti-blocking type material-gas separating device (2), the material-gas separating device (2) comprises a reverse material return cone (7), a reverse material discharging spiral cylinder (8) and an air adjusting pipeline (9) which are sequentially connected, and the reverse material discharging spiral cylinder (8) comprises a material discharging hollow shaft (21) and a reverse material discharging spiral blade (22); an air adjusting valve (23) is arranged on the air adjusting pipeline (9); one end of the air adjusting pipeline (9) is inserted into the reverse discharging spiral cylinder (8).
4. The device for the superfine processing and recycling of the industrial waste residues as claimed in claim 1, wherein the superfine powder concentrator (32) comprises a support (11), a driving device (10) is arranged above the support (11), an upper shell (14) is arranged below the support (11), a rotor (13) connected with the driving device (10) is arranged in the upper shell (14), the upper part of the upper shell (14) is connected with a fine powder outlet pipe (12) and the support (11), the lower part of the upper shell (14) is connected with a middle shell (16), a guide cone (15) is arranged in the middle shell (16), the lower part of the middle shell (16) is connected with a secondary air grading volute (17), the lower part of the secondary air grading volute (17) is connected with a lower shell (19), an inner barrel (18) is arranged in the lower shell (19), and the lower part of the lower shell (19) is connected with a blanking air locking valve (20).
5. The device for the superfine processing and recycling of industrial waste residues as claimed in claim 1, wherein the superfine ball mill (31) adopts a single-bin structure, the fineness of the ground material is more than or equal to 120 meshes, and the specification of the grinding medium is less than or equal to 15 mm; the superfine powder separator (32) adopts a large-scale single-rotor structure.
6. The apparatus for industrial residue ultrafine processing recycling according to claim 4, characterized in that a low bypass value double sealing device (24) is arranged between the upper casing (14) and the rotor (13) of the ultrafine powder separator (32), and the low bypass value double sealing device (24) comprises a casing labyrinth seal (25), a rotor labyrinth seal (26) and an air seal device (27).
7. The apparatus for industrial waste residue superfine processing and recycling according to claim 4, characterized in that the secondary air grading volute (17) comprises a volute (28), a vortex stationary blade (29) is arranged in the volute (28), and air adjusting plates (30) are arranged at two ends of the volute (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011900.2A CN113680662B (en) | 2021-08-31 | 2021-08-31 | Device for recycling industrial waste residue superfine processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011900.2A CN113680662B (en) | 2021-08-31 | 2021-08-31 | Device for recycling industrial waste residue superfine processing |
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| CN113680662A true CN113680662A (en) | 2021-11-23 |
| CN113680662B CN113680662B (en) | 2023-02-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114932003A (en) * | 2022-05-18 | 2022-08-23 | 北京干雾科技有限公司 | Ball mill for sorting pebble coal |
| CN115090383A (en) * | 2022-06-17 | 2022-09-23 | 浙江华飞电子基材有限公司 | Preparation method of high-purity low-radioactivity spherical silicon micro powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114932003A (en) * | 2022-05-18 | 2022-08-23 | 北京干雾科技有限公司 | Ball mill for sorting pebble coal |
| CN115090383A (en) * | 2022-06-17 | 2022-09-23 | 浙江华飞电子基材有限公司 | Preparation method of high-purity low-radioactivity spherical silicon micro powder |
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| Publication number | Publication date |
|---|---|
| CN113680662B (en) | 2023-02-21 |
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