CN112548839A - Ceramic powder optimization method, ceramic powder preparation method and powder preparation system - Google Patents
Ceramic powder optimization method, ceramic powder preparation method and powder preparation system Download PDFInfo
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- CN112548839A CN112548839A CN202011450320.9A CN202011450320A CN112548839A CN 112548839 A CN112548839 A CN 112548839A CN 202011450320 A CN202011450320 A CN 202011450320A CN 112548839 A CN112548839 A CN 112548839A
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- 239000000843 powder Substances 0.000 title claims abstract description 208
- 239000000919 ceramic Substances 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000005457 optimization Methods 0.000 title abstract description 9
- 238000002360 preparation method Methods 0.000 title description 4
- 239000002245 particle Substances 0.000 claims abstract description 122
- 238000012216 screening Methods 0.000 claims abstract description 96
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 238000000265 homogenisation Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 46
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 238000005520 cutting process Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 238000010298 pulverizing process Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 2
- 239000003245 coal Substances 0.000 claims 1
- 238000007780 powder milling Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000007873 sieving Methods 0.000 description 7
- 238000000151 deposition Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004814 ceramic processing Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
- B24B31/033—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels having several rotating or tumbling drums with parallel axes
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
-
- 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
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a ceramic powder optimization method, a ceramic powder making method and a powder making system, wherein the ceramic powder optimization method is used for screening fine powder of ceramic powder after rounding treatment of the ceramic powder, screening ceramic fine powder and ceramic particles, returning the ceramic fine powder to a slurry tank for homogenization treatment, screening the ceramic particles, screening qualified particles and unqualified particles, conveying the qualified particles to a finished product area, and crushing and rounding the unqualified particles again. The ceramic fine powder obtained by screening is subjected to preorder processes such as iron removal, so that the ceramic fine powder does not contain impurities, the ceramic fine powder has small particle size, the ceramic fine powder can be directly homogenized, and the unqualified particles are all subjected to rounding treatment.
Description
Technical Field
The invention relates to the technical field of ceramic processing, in particular to a ceramic powder optimizing method, a ceramic powder making method comprising the optimizing method and a system for making ceramic powder by using the process.
Background
With the rapid development of the ceramic industry, the nation sets strict indexes for dust emission and tailing treatment of enterprises, and in order to reach the national regulations, the enterprises need to invest a large amount of dust removal equipment and manpower to solve the production problems. At present, the conventional treatment mode is to directly make the tailings enter a spray tower through a paddle or concentrate the tailings into a tailing bin and then enter a ball mill for repeated processing and use, but the direct problem brought by the treatment mode is that the production cost of an enterprise is increased, and new tailings can be further generated when the tailings are treated by equipment such as a spray tower bag-type dust collector, a workshop environment dust collector, a pre-kiln blank grinding machine and the like. Therefore, the complete recycling of the tailings at low cost becomes a production problem which needs to be overcome by enterprises.
Disclosure of Invention
One object of an embodiment of the present invention is to: a method for optimizing ceramic powder is provided which is capable of separating off finished products from off-spec tailings.
Another object of an embodiment of the present invention is to: provided is a ceramic powder manufacturing method capable of reusing an unqualified tailing for the production of ceramic powder.
Yet another object of embodiments of the present invention is to: a powdering system is provided that is capable of screening out off-spec tailings and reusing them for the production of ceramic powders.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first aspect provides a ceramic powder optimization method, which comprises the steps of screening ceramic powder to obtain ceramic fine powder and ceramic particles, returning the ceramic fine powder to a slurry tank for homogenization treatment, screening the ceramic particles to obtain qualified particles and unqualified particles, conveying the qualified particles to a finished product area, and crushing and rounding the unqualified particles again.
As a preferable scheme of the optimization method of the ceramic powder, the size range of the qualified particles is as follows: 120 meshes to 12 meshes;
the size range of the unqualified particles is larger than 12 meshes;
the size range of the ceramic fine powder is less than 120 meshes.
As a preferred scheme of the optimization method of the ceramic powder, negative pressure dust collection treatment is carried out in the process of rounding the ceramic powder; and/or carrying out negative pressure dust collection treatment in the process of screening the ceramic particles.
As a preferable scheme of the ceramic powder optimization method, a fan is provided, in the process of screening fine powder of the ceramic powder, the fan extracts hot air to screen the ceramic fine powder in the ceramic particles, and negative pressure formed at the fan performs negative pressure dust collection treatment on the rounding treatment process and the particle screening process.
As a preferable scheme of the ceramic powder optimization method, the ceramic fine powder screened after fine powder screening is carried out on the ceramic powder is collected in a designated area, and then the ceramic fine powder is conveyed to the slurry tank through a conveying device.
In a second aspect, a ceramic pulverizing method is provided, which includes the above ceramic optimizing method, and further includes:
dewatering, namely dewatering the slurry obtained after the homogenization treatment of the slurry tank to obtain a slurry block;
cutting, namely cutting the mud blocks to obtain mud;
drying, namely drying the pug to obtain dried pug;
and crushing, namely crushing the dried pug to obtain the ceramic powder.
In a third aspect, a powder making system is provided, which comprises a slurry tank, a rounding device, a fine powder screening device and a particle screening device, which are connected in sequence, wherein the rounding device is used for rounding crushed ceramic powder, a discharge end of the rounding device is connected with a feed end of the fine powder screening device through a first conveying device, the first conveying device conveys the ceramic powder rounded by the rounding device to the fine powder screening device, the fine powder screening device is used for screening ceramic fine powder and ceramic particles in the ceramic powder, a second conveying device for conveying the ceramic fine powder is arranged between the fine powder screening device and the slurry tank, a third conveying device for conveying the ceramic particles is arranged between the fine powder screening device and the particle screening device, and the particle screening device is used for screening qualified particles and unqualified particles in the ceramic particles, and a fourth conveying device for conveying the unqualified particles is arranged between the particle screening device and the feeding end of the rounding device.
As a preferable scheme of the powder making system, the fine powder screening apparatus includes a first screening drum and a fan located in the first screening drum, and the fan is disposed on one side of a feeding end of the fine powder screening apparatus and is configured to separate the ceramic fine powder and the ceramic particles from the feeding end of the fine powder screening apparatus.
As an optimal selection scheme of powder process system, it deposits the district to have first district and second in the first sieve separator, first deposit the district with the second is deposited the district and is followed the air-out direction of fan sets gradually, first deposit the district and be used for depositing and select the ceramic granule, the second is deposited the district and is located first deposit the district and keep away from one side of fan is used for depositing and selects the ceramic farine.
As an optimal scheme of powder process system, still have the negative pressure zone in the first filter cylinder, the negative pressure zone is located the dorsal part of fan, be provided with the negative pressure hole on the first filter cylinder, the negative pressure hole with the negative pressure zone intercommunication, first filter cylinder is provided with the dust absorption pipeline outward, rounding equipment and/or granule screening equipment is provided with the dust absorption mouth, the dust absorption pipeline respectively with the dust absorption mouth with the negative pressure hole intercommunication.
As a preferable scheme of the pulverizing system, the dust suction duct includes a main passage and a branch passage which are communicated with each other, and all of the dust suction ports and the negative pressure holes are communicated with the branch passage.
As a preferred scheme of the pulverizing system, the rounding equipment comprises a roller, a feeding hole and a discharging hole are respectively formed in the two ends of the roller, a dust suction hole is formed in one end, close to the roller, of the discharging hole, and an air inlet for inputting hot air is formed in one end, close to the feeding hole, of the roller.
As a preferable scheme of the pulverizing system, the number of the rollers is at least 1.
As a preferable scheme of the powder making system, a collecting device for collecting the ceramic fine powder is arranged at a discharge end of the fine powder screening device, and the ceramic fine powder collected by the collecting device is conveyed to the slurry tank through the second conveying device.
As a preferable scheme of the powder making system, a crusher for collecting the unqualified particles is arranged at the discharge end of the particle screening device, and the unqualified particles are crushed by the crusher and then conveyed to the rounding device through the fourth conveying device.
As an optimal scheme of the powder making system, the powder making system further comprises a dewatering device, a mud cutting device, a drying device and a crushing device which are sequentially connected, wherein the mud subjected to the homogenization treatment in the mud tank is conveyed to the dewatering device through a sixth conveying device, the dewatering device is used for dewatering the mud to obtain mud blocks, the mud blocks are conveyed to the mud cutting device through a seventh conveying device, the mud cutting device is used for cutting the mud blocks to obtain mud materials, the mud materials are conveyed to the drying device through an eighth conveying device, the drying device is used for drying the mud materials to obtain dry mud materials, the dry mud materials are conveyed to the crushing device through a ninth conveying device, the crushing device is used for crushing the dry mud materials to obtain ceramic powder, and the ceramic powder materials are conveyed to the rounding device through a tenth conveying device.
The invention has the beneficial effects that: the ceramic fine powder obtained by screening is subjected to preorder processes such as iron removal, so that the ceramic fine powder does not contain impurities, the ceramic fine powder has small particle size, the ceramic fine powder can be directly homogenized, and the unqualified particles are all subjected to rounding treatment. Through setting up fine powder screening installation and granule screening installation, can divide into qualified granule, the too little ceramic fine powder of particle size and the too big unqualified granule of particle size with ceramic powder, ceramic fine powder and unqualified granule enter into different steps respectively and carry out secondary operation, and the whole recycle of the tails that realizes can also reduce manufacturing cost when improving production efficiency.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
FIG. 1 is a schematic diagram of a method for optimizing ceramic powder and a method for making ceramic powder according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a pulverizing system according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of a portion a of fig. 2.
Fig. 4 is a schematic view of a rounding device according to an embodiment of the present invention.
In the figure:
1. a pulp tank; 2. dewatering setting; 3. mud cutting equipment; 4. a drying device; 5. a crushing device; 6. rounding equipment; 601. a drum; 602. feeding into a hopper; 603. an air inlet; 7. fine powder screening equipment; 8. a particle screening device; 9. a finished product area; 10. a dust collection duct; 1001. a main channel; 1002. a branch channel; 11. a first conveying device; 12. a second conveying device; 13. a third conveying device; 14. a fourth conveying device; 15. a fifth conveyance device; 16. a sixth conveying device; 17. a seventh conveyance device; 18. an eighth conveyance device; 19. a ninth conveyance device; 20. a tenth conveyance device; 21. a collection device; 22. a crusher.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 (some reference numbers refer to fig. 2 and fig. 3), the method for optimizing ceramic powder provided by the invention is that after the ceramic powder is ground into round shape, the ceramic powder is screened to obtain ceramic fine powder and ceramic particles, and the ceramic fine powder is returned to a slurry tank 1 for homogenization treatment. Then, the ceramic particles are subjected to particle screening to screen out qualified particles and unqualified particles, the qualified particles are conveyed to a finished product area 9, and the unqualified particles are subjected to rounding again.
The ceramic fine powder obtained by screening is subjected to preorder processes such as iron removal, so that the ceramic fine powder does not contain impurities, the ceramic fine powder has small particle size, the ceramic fine powder can be directly homogenized, and the unqualified particles are all subjected to rounding treatment.
Specifically, the acceptable particle size ranges are: 120-12 meshes, the size range of unqualified particles is larger than 12 meshes, and the size range of the ceramic fine powder is smaller than 120 meshes.
In this embodiment, the process flow of the ceramic powder making method is as follows:
and 8, screening the ceramic particles to obtain qualified particles and unqualified particles, conveying the qualified particles to a finished product area 9, and performing rounding treatment on the unqualified particles in the step 6, and sequentially performing the subsequent steps.
Preferably, the ceramic powder rounding treatment process is performed with negative pressure dust collection treatment, and of course, the ceramic particles can also be subjected to negative pressure dust collection treatment in the screening process. The negative pressure dust collection can reduce the dust content in the air, so that the production environment of the ceramic powder can meet the requirement of a clean production workshop. At the moment, hot air is introduced, the temperature of the hot air is 50-60 ℃, the temperature of the screening process environment can be increased by introducing the hot air, and the ceramic fine powder is prevented from being attached to the inner wall of the equipment due to the fact that the temperature is too low.
Wherein, the hot air can be independently heated air or the residual heat of a kiln for firing ceramics, thereby reducing the production cost.
Preferably, a fan is used for screening fine powder of the ceramic powder, and negative pressure formed at the fan is used for carrying out negative pressure dust collection treatment on the rounding treatment process and the particle screening process. Therefore, negative pressure formed by the fan can be utilized, and negative pressure dust absorption treatment is carried out on the rounding treatment process and the particle screening process without additional air suction equipment, so that the equipment in the process is more energy-saving, and the production cost is reduced.
Preferably, the ceramic fine powder screened after the ceramic fine powder is screened is collected to a designated area, and then the ceramic fine powder is conveyed to the slurry tank 1 through a conveying device. Because the ceramic fine powder has small volume and light weight, the ceramic fine powder can be prevented from floating in the air by arranging the designated area to collect the ceramic fine powder, so that a production workshop is kept clean.
As shown in fig. 2 and 3, the present invention further provides a powder making system, which comprises a slurry tank 1, a rounding device 6, a fine powder screening device 7 and a particle screening device 8, which are connected in sequence, wherein the rounding device 6 is used for rounding the pulverized ceramic powder, a discharge end of the rounding device 6 is connected with a feed end of the fine powder screening device 7 through a first conveying device 11, the first conveying device 11 conveys the ceramic powder rounded by the rounding device 6 to the fine powder screening device 7, the fine powder screening device 7 is used for screening ceramic fine powder and ceramic particles in the ceramic powder, a second conveying device 12 for conveying the ceramic fine powder is arranged between the fine powder screening device 7 and the slurry tank 1, a third conveying device 13 for conveying the ceramic particles is arranged between the fine powder screening device 7 and the particle screening device 8, the particle screening device 8 is used for screening qualified particles and unqualified particles in the ceramic particles, a fourth conveying device 14 for conveying unqualified particles is arranged between the particle screening device 8 and the feeding end of the rounding device 6.
Through setting up fine powder screening installation 7 and granule screening installation 8, can divide into qualified granule, the too little ceramic fine powder of particle size and the too big unqualified granule of particle size with ceramic powder, ceramic fine powder and unqualified granule enter into different steps respectively and carry out secondary operation, and the whole recycle of the tails that realizes can also reduce manufacturing cost when improving production efficiency.
In this embodiment, the operation process of the pulverizing system is as follows:
the slurry tank 1 is used for feeding raw materials into the slurry tank 1 for homogenization treatment after ball milling and pulping to obtain required slurry;
a sixth conveying apparatus 16, the sixth conveying apparatus 16 conveying the sludge to the dewatering arrangement 2;
the dehydration device 2 is used for dehydrating the slurry to obtain mud blocks;
the seventh conveying device 17, the seventh conveying device 17 conveys the mud blocks to the mud cutting device 3;
the mud cutting device 3 is used for cutting mud blocks into pieces to obtain mud;
the eighth conveying device 18, the eighth conveying device 18 conveys the pug to the drying device 4;
the drying equipment 4 dries the pug to obtain dried pug;
a ninth conveying device 19, the ninth conveying device 19 conveying the dried sludge to the crushing device 5;
the crushing equipment 5 is used for crushing the dried pug to obtain ceramic powder;
the tenth conveying device 20 is used for conveying the ceramic powder to the rounding device 6 by the tenth conveying device 20;
the rounding equipment 6 is used for rounding the ceramic powder;
the first conveying equipment 11 is used for conveying the ceramic powder subjected to the rounding treatment to the fine powder screening equipment 7 by the first conveying equipment 11;
the fine powder screening device 7 screens the ceramic powder subjected to rounding treatment to obtain ceramic fine powder and ceramic particles, the ceramic fine powder is conveyed into the slurry tank 1 through the second conveying device 12 for secondary homogenization treatment, and the ceramic fine powder is sequentially processed and screened through subsequent devices;
a third conveying device 13, wherein the third conveying device 13 conveys the ceramic particles to the particle screening device 8;
the ceramic particle screening device 8 screens ceramic particles to obtain qualified particles and unqualified particles, the qualified particles are conveyed to the finished product area 9 by the fifth conveying device 15, the unqualified particles are conveyed to the rounding device 6 by the fourth conveying device 14 to be rounded for the second time, and the ceramic particles are sequentially processed and screened by subsequent devices.
In one embodiment, the fine powder sieving device 7 includes a screen, and the ceramic fine powder and the ceramic particles can be separated after the ceramic powder is sieved by the screen.
In this embodiment, it is preferable that the fine powder sieving apparatus 7 includes a first sieving cylinder and a fan located in the first sieving cylinder, the fan being disposed at one side of the feeding end of the fine powder sieving apparatus 7 for separating the ceramic fine powder and the ceramic particles from the feeding end of the fine powder sieving apparatus 7. Because the ceramic fine powder has small particle size and light weight, the air flow is blown by the fan, the ceramic fine powder and the ceramic particles can be directly separated, and the condition that meshes of a screen in the traditional sieving mode are blocked by the ceramic powder after the screen is used for a long time is avoided.
Preferably, have first district and the second of depositing and deposit the district in the first sieve section of thick bamboo, first district and the second of depositing is deposited the district and is set gradually along the air-out direction of fan, and first district is used for depositing the ceramic particle of selecting, and the second is deposited the district and is located one side that the fan was kept away from in first district and is used for depositing the ceramic fine powder of selecting. Because the weight of the ceramic fine powder is less than that of the ceramic particles, the ceramic fine powder can be blown to a farther place under the action of wind power with the same size, so that the first storage area for storing the ceramic particles is arranged at one side close to the fan, and the second storage area for storing the ceramic fine powder is arranged at one side far away from the fan, the ceramic particles and the ceramic fine powder can be stored in a subarea mode, and meanwhile, the condition that the separated ceramic particles and the separated ceramic fine powder are mixed again is avoided.
Preferably, a negative pressure area is further arranged in the first screening cylinder, the negative pressure area is located on the back side of the fan, a negative pressure hole is formed in the first screening cylinder and communicated with the negative pressure area, a dust suction pipeline 10 is arranged outside the first screening cylinder, the rounding device 6 is provided with a dust suction port, and the dust suction pipeline 10 is communicated with the dust suction port and the negative pressure hole respectively. Through dust absorption pipeline 10, utilize the air current negative pressure that the fan produced, make rounding equipment 6 need not extra equipment just can realize the negative pressure, make rounding equipment 6 not produce the raise dust at the during operation, can also reduce cost when keeping the workshop clean.
Preferably, one end of the roller 601 of the rounding device 6, which is close to the feeding hopper 602, is provided with an air inlet 603 for inputting hot air, and by arranging the air inlet 603, the hot air can pass through the air inlet 603 and enter the inside of the roller 601, so that the temperature inside the roller 601 is increased, the situation that fine ceramic powder is attached to the inner wall of the roller 601 due to too low temperature is avoided, and meanwhile, the fine ceramic powder can be carried away from the roller 601 by the hot air as far as possible.
Of course, the particle sorting apparatus 8 may also be provided with a dust suction port, the dust suction duct 10 includes a main passage 1001 and a branch passage 1002 which communicate with each other, and all of the dust suction port and the negative pressure hole communicate with the branch passage 1002. The production workshop is kept clean by utilizing the airflow negative pressure generated by the fan through the dust absorption pipeline 10, so that energy can be saved, and the production cost can be reduced.
By arranging the dust suction pipeline 10, the fan, the negative pressure hole and other equipment and components, the screening operation of the ceramic powder under the negative pressure state is realized, meanwhile, the fluidity of the ceramic powder is further optimized, and the subsequent process is favorable for the compression molding of the ceramic powder.
Preferably, as shown in fig. 4, the rounding device 6 comprises a roller 601 and an inlet hopper 602, wherein both ends of the roller 601 are respectively provided with a feeding port and a discharging port, a dust suction port is arranged at one end close to the discharging port of the roller 601, the inlet hopper 602 is arranged at one end close to the feeding port of the roller 601, the axis of the roller 601 is arranged obliquely along the horizontal direction, and one end of the discharging port is lower than one end of the inlet port. Because the ceramic powder can continuously generate ceramic fine powder in the process of rounding, the dust suction port is arranged at one end close to the discharge port of the roller 601, so that a better dust suction effect can be achieved.
Preferably, the number of the rollers 601 is at least 1, and the number of the rollers 601 of the rounding apparatus 6 shown in fig. 2 is 3. The rounding effect of the rounding device 6 on the ceramic powder can be improved by increasing the number of the rollers 601.
Preferably, the discharge end of the fine powder screening device 7 is connected to the pulp chest 1. This mode of setting can directly blow ceramic powder to thick liquid pond 1 from fine powder screening installation 7 through the fan, does not need extra transportation equipment to transport ceramic powder, has reduced manufacturing cost.
Of course, the discharge end of the fine powder screening device 7 may also be provided with a collecting device 21 for collecting ceramic fine powder, and the second conveying device 12 conveys the ceramic fine powder collected by the collecting device 21 to the slurry tank 1. The ceramic fine powder is collected in a centralized manner through the collecting device 21, so that dust can be prevented from being generated, and the cleanness of a production workshop is kept.
Preferably, the discharge end of the particle screening device 8 is provided with a crusher 22 for collecting unqualified particles, and the unqualified particles are crushed by the crusher 22 and then conveyed to the rounding device 6 through the fourth conveying device 14.
It can be stated that the discharge end of the crusher 22 can be connected directly to the feed opening of the rounding device 6. Therefore, additional transportation equipment is not needed for transporting the broken unqualified particles, and the production cost is reduced.
Claims (16)
1. A method for optimizing ceramic powder is characterized in that,
after the ceramic powder is ground into round, fine powder screening is carried out on the ceramic powder, ceramic fine powder and ceramic particles are screened out, the ceramic fine powder is made to return to a slurry tank for homogenization treatment, particle screening is carried out on the ceramic particles, qualified particles and unqualified particles are screened out, the qualified particles are conveyed to a finished product area, and the unqualified particles are broken and ground into round again.
2. The method for optimizing ceramic frit of claim 1, wherein the acceptable particle size ranges are: 120 meshes to 12 meshes;
the size range of the unqualified particles is larger than 12 meshes;
the size range of the ceramic fine powder is less than 120 meshes.
3. The method for optimizing ceramic powder according to claim 1, wherein a negative pressure dust suction treatment is performed during the ceramic powder rounding treatment; and/or carrying out negative pressure dust collection treatment in the process of screening the ceramic particles.
4. The method for optimizing ceramic powder according to claim 3, wherein a fan is provided, the fan extracts hot air to screen the ceramic fine powder in the ceramic particles during the fine powder screening process, and negative pressure generated at the fan performs negative pressure dust suction processing on the rounding process and the particle screening process.
5. The method for optimizing ceramic powder according to claim 1, wherein the ceramic fine powder screened out after the ceramic powder is subjected to fine powder screening is collected in a designated area, and then the ceramic fine powder is conveyed to the slurry tank by a conveying device.
6. A method for producing ceramic powder, comprising the method for optimizing ceramic powder according to any one of claims 1 to 5, further comprising the steps of:
dewatering, namely dewatering the slurry obtained after the homogenization treatment of the slurry tank to obtain a slurry block;
cutting, namely cutting the mud blocks to obtain mud;
drying, namely drying the pug to obtain dried pug;
crushing, namely crushing the dried pug to obtain the ceramic powder;
and rounding, namely rounding the ceramic powder.
7. A powder making system is characterized by comprising a slurry tank, rounding equipment, fine powder screening equipment and particle screening equipment which are sequentially connected, wherein the rounding equipment is used for rounding crushed ceramic powder, the discharge end of the rounding equipment is connected with the feed end of the fine powder screening equipment through first conveying equipment, the first conveying equipment conveys the ceramic powder rounded by the rounding equipment to the fine powder screening equipment, the fine powder screening equipment is used for screening ceramic fine powder and ceramic particles in the ceramic powder, second conveying equipment for conveying the ceramic fine powder is arranged between the fine powder screening equipment and the slurry tank, third conveying equipment for conveying the ceramic particles is arranged between the fine powder screening equipment and the particle screening equipment, and the particle screening equipment is used for screening qualified particles and unqualified particles in the ceramic particles, and a fourth conveying device for conveying the unqualified particles is arranged between the particle screening device and the feeding end of the rounding device.
8. The powder milling system of claim 7, wherein the fines screening apparatus comprises a first screen drum and a fan positioned within the first screen drum, the fan being positioned on a side of an inlet end of the fines screening apparatus for separating the ceramic fines and ceramic particles from the inlet end of the fines screening apparatus.
9. The pulverizing system of claim 8, wherein the first screen cylinder has a first storage area and a second storage area therein, the first storage area and the second storage area are sequentially arranged along the air outlet direction of the fan, the first storage area is used for storing the screened ceramic particles, and the second storage area is located on the side of the first storage area away from the fan and used for storing the screened ceramic fine powder.
10. The pulverizing system of claim 8, wherein the first screen cylinder further comprises a negative pressure region therein, the negative pressure region is located at a back side of the fan, the first screen cylinder is provided with a negative pressure hole, the negative pressure hole is communicated with the negative pressure region, the first screen cylinder is externally provided with a dust suction pipeline, the rounding device and/or the particle screening device are/is provided with a dust suction port, and the dust suction pipeline is respectively communicated with the dust suction port and the negative pressure hole.
11. The pulverizing system of claim 10, wherein the dust extraction duct comprises a main passage and a branch passage which are communicated with each other, and all of the dust extraction port and the negative pressure hole are communicated with the branch passage.
12. The pulverizing system of claim 10, wherein the rounding device comprises a roller, the roller has a feed inlet and a discharge outlet at two ends thereof, the dust suction inlet is disposed at an end close to the discharge outlet of the roller, and the roller has an air inlet for inputting hot air at an end close to the feed inlet.
13. The pulverizing system of claim 12, wherein the number of rollers is at least 1.
14. The coal pulverizing system of claim 7, wherein the discharge end of the fine powder screening device is provided with a collecting device for collecting the ceramic fine powder, and the ceramic fine powder collected by the collecting device is conveyed to the slurry tank by the second conveying device.
15. The pulverizing system of claim 7, wherein the discharge end of the particle screening device is provided with a crusher for crushing the unqualified particles, and the unqualified particles are crushed by the crusher and then conveyed to the rounding device through the fourth conveying device.
16. The pulverizing system of claim 7, further comprising a dewatering device, a mud cutting device, a drying device and a crushing device connected in series, the slurry homogenized in the slurry tank is conveyed to the dehydration device through a sixth conveying device, the dehydration device dehydrates the slurry to obtain a slurry block, the mud blocks are conveyed to the mud cutting equipment through seventh conveying equipment, the mud cutting equipment cuts the mud blocks into pieces to obtain mud materials, the mud is conveyed to the drying equipment through eighth conveying equipment, the drying equipment dries the mud to obtain dry mud, the dry mud is conveyed to the crushing equipment through ninth conveying equipment, and the crushing equipment is used for crushing the dried pug to obtain the ceramic powder, and the ceramic powder is conveyed to the rounding equipment through tenth conveying equipment.
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| WO2023065597A1 (en) * | 2021-10-18 | 2023-04-27 | 佛山市蓝之鲸科技有限公司 | New energy-saving and emission-reducing ceramic powder fabrication process |
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