CN115007270B - Milling system and milling method for processing quicklime - Google Patents
Milling system and milling method for processing quicklime Download PDFInfo
- Publication number
- CN115007270B CN115007270B CN202210611326.2A CN202210611326A CN115007270B CN 115007270 B CN115007270 B CN 115007270B CN 202210611326 A CN202210611326 A CN 202210611326A CN 115007270 B CN115007270 B CN 115007270B
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- Prior art keywords
- cylinder
- pressing plate
- pressure plate
- limestone
- fixed
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 235000012255 calcium oxide Nutrition 0.000 title claims abstract description 27
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 27
- 238000003801 milling Methods 0.000 title description 6
- 235000019738 Limestone Nutrition 0.000 claims abstract description 45
- 239000006028 limestone Substances 0.000 claims abstract description 45
- 238000000227 grinding Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003672 processing method Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 9
- 206010006514 bruxism Diseases 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 235000004237 Crocus Nutrition 0.000 claims description 2
- 241000596148 Crocus Species 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
- B02C7/04—Crushing or disintegrating by disc mills with coaxial discs with concentric circles of intermeshing teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/12—Shape or construction of discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/14—Adjusting, applying pressure to, or controlling distance between, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/16—Driving mechanisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a grinding processing system and a processing method for quicklime processing, wherein the grinding processing system comprises a base, an outer cylinder is fixed on the base, an inner cylinder concentric with the outer cylinder is fixed in the outer cylinder, a support is fixed above the inner cylinder, a feeding cylinder is fixed in the center of the support, an upper pressing plate positioned in the inner cylinder is sleeved on the periphery of the feeding cylinder, a lower pressing plate is arranged at a certain distance below the upper pressing plate in the inner cylinder, a plurality of sieve holes penetrating up and down are formed in the surface of the lower pressing plate, the center of the lower pressing plate is rotatably arranged in a fixed cylinder through a rotating shaft, the fixed cylinder is fixedly connected with the bottom of the inner cylinder, and a motor capable of driving the lower pressing plate to rotate is further arranged in the fixed cylinder. Compared with the prior art, the invention can prevent the insufficiently calcined limestone from being ground and crushed to be mixed into the quicklime powder, so that the collected quicklime powder has high purity and less impurities.
Description
Technical Field
The invention relates to the technical field of lime processing, in particular to a grinding processing system and a processing method for quicklime processing.
Background
Limestone becomes quicklime after calcination, is a common material in construction engineering, and the limestone after calcination is processed into quicklime powder after a grinding process in the prior art so as to be convenient for transportation and construction, but because the sizes and shapes of the limestone are inconsistent, the inside of the limestone after calcination possibly has an insufficiently calcined part which is a mixture of the quicklime outside the inside of the limestone, and the insufficiently calcined limestone cannot be selected in the conventional grinding process and is ground and mixed into the quicklime powder together, so that impurities exist in the quicklime powder.
Therefore, there is a need to provide a grinding system and a grinding method for quicklime processing, so as to solve the problems in the prior art.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a crocus processing system that quick lime processing was used, includes the base, be fixed with the urceolus on the base, urceolus internal fixation has rather than concentric inner tube, the inner tube top is fixed with the support, the support center is fixed with the feed cylinder, the peripheral cover of feed cylinder is equipped with the last pressure disk that is located the inner tube, the below certain distance department of going up the pressure disk in the inner tube is equipped with down the pressure disk, a plurality of sieve meshes that link up from top to bottom have been seted up to the pressure disk surface down, the center of pressure disk rotationally sets up in fixed section of thick bamboo down through the pivot, fixed section of thick bamboo and inner tube bottom fixed connection, still be equipped with the rotatory motor of pressure disk under can driving in the fixed section of thick bamboo.
Further, preferably, a slag discharging hole penetrating between the outer cylinder and the inner cylinder is formed in the side wall of the inner cylinder at a position corresponding to the gap between the upper pressure plate and the lower pressure plate.
Further, preferably, the lower pressure plate is in an inverted sucker shape which is inclined upwards from the center to the edge, and the bottom of the feeding cylinder is located above the center of the lower pressure plate.
Further, as an preference, the bottom of the feeding cylinder is a connecting ball with an arc-shaped surface, the center of the upper pressing plate is connected into the connecting ball and can incline towards any direction around the connecting ball, a plurality of supporting components are uniformly distributed on the circumference of the upper surface of the upper pressing plate, and the other end of each supporting component is connected to the outer wall of the feeding cylinder.
Further, preferably, the upper platen is in the shape of an inverted sucker which is inclined upward from the center to the edge, and the gap between the upper platen and the lower platen is gradually decreased from the center to the edge.
Further, preferably, a plurality of grinding teeth are distributed on the lower surface of the upper pressing plate and the upper surface of the upper pressing plate, and the upper and lower opposite grinding teeth are staggered.
Further, as the preference, the supporting component includes the hydraulic stem, the both ends of hydraulic stem are connected through the universal joint in last pressure disk, feed cylinder respectively, the hydraulic stem periphery still overlaps and is equipped with the spring.
Further, preferably, the cylinder body of the hydraulic rod is provided with threads, the threads are sleeved with threaded sleeves, and the springs are limited between the threaded sleeves and the tail ends of the piston rods of the hydraulic rod.
A grinding method for processing quicklime includes such steps as regulating the position of screw sleeve in each supporting component to make the spring apply pressure to upper pressing plate, lifting conveying belt to uniformly throw the calcined limestone from feeding cylinder, starting motor to make the limestone falling onto lower pressing plate from feeding cylinder move toward the edge of lower pressing plate under centrifugal action, pressing and grinding the limestone by lower pressing plate and upper pressing plate, gradually increasing the pressure of upper pressing plate to limestone to make it gradually break up from surface to interior, dropping broken quicklime powder to the bottom of inner cylinder via screen holes, discharging from discharge hole and collecting, and the insufficiently calcined limestone is inclined against the pressure of supporting component to discharge from discharge hole and collect for next calcination.
Further, as preferable, the screw sleeves in the supporting component are respectively adjusted to different positions so that the pressure applied by the springs to the upper pressing plate is gradually reduced from one side to the other side, and the insufficiently calcined limestone can be gathered on the side with small pressure of the upper pressing plate in the rotation process of the lower pressing plate, so that discharged insufficiently calcined limestone can be conveniently collected, and the upper pressing plate can not be inclined due to the fact that two pieces of limestone with similar sizes and hardness are symmetrically distributed and clamped with the upper pressing plate.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, limestone falling onto the lower pressing plate from the feeding cylinder moves towards the edge of the lower pressing plate under the centrifugal action when the lower pressing plate rotates, the limestone is extruded and ground by the lower pressing plate and the upper pressing plate in the moving process, the pressure of the upper pressing plate on the limestone gradually increases to enable the limestone to be gradually crushed from the surface to the inside, the crushed quicklime powder falls into the bottom of the inner cylinder through the sieve holes, the insufficiently calcined limestone overcomes the pressure of the supporting component to enable the upper pressing plate to incline, and then the insufficiently calcined limestone is discharged from the slag discharging holes, so that the insufficiently calcined limestone is prevented from being ground and crushed and mixed into the quicklime powder, and the collected quicklime powder is high in purity and few in impurities.
According to the invention, the pressure of the spring to the upper pressure plate can be adjusted by rotating the threaded sleeve, so that the pressure required to be overcome by discharging quicklime from the slag discharging hole is changed, the grinding degree is adjusted, the threaded sleeve in the supporting component is respectively adjusted to different positions, so that the pressure applied by the spring to the upper pressure plate is gradually reduced from one side to the other side, the insufficiently calcined limestone can be gathered on the side with small pressure of the upper pressure plate in the rotation process of the lower pressure plate, the discharged insufficiently calcined limestone is conveniently collected, and the upper pressure plate cannot be inclined due to the fact that two limestone with similar size and hardness are symmetrically distributed and clamped with the upper pressure plate is prevented.
Drawings
FIG. 1 is a schematic diagram of a milling system for quicklime processing;
FIG. 2 is a schematic cross-sectional view of a milling system for quicklime processing;
in the figure: 1. a base; 2. an outer cylinder; 3. an inner cylinder; 4. a bracket; 5. a feed cylinder; 6. an upper platen; 7. a lower platen; 71. a sieve pore; 8. a connecting ball; 9. a support assembly; 10. a discharge hole; 11. a fixed cylinder; 12. a rotating shaft; 13. a motor; 14. grinding the teeth; 15. a slag discharging hole; 91. a hydraulic rod; 92. a spring; 93. a thread; 94. a screw sleeve.
Detailed Description
Referring to fig. 1 and 2, in an embodiment of the present invention, a grinding system for quicklime processing includes a base 1, an outer cylinder 2 is fixed on the base 1, an inner cylinder 3 concentric with the outer cylinder 2 is fixed in the outer cylinder 2, a support 4 is fixed above the inner cylinder 3, a feeding cylinder 5 is fixed at the center of the support 4, an upper platen 6 located in the inner cylinder 3 is sleeved on the periphery of the feeding cylinder 5, a lower platen 7 is arranged at a certain distance below the upper platen 6 in the inner cylinder 3, a plurality of holes 71 penetrating up and down are formed on the surface of the lower platen 7, the center of the lower platen 7 is rotatably arranged in a fixed cylinder 11 through a rotating shaft 12, the fixed cylinder 11 is fixedly connected with the bottom of the inner cylinder 3, and a motor 13 capable of driving the lower platen 7 to rotate is further arranged in the fixed cylinder 11.
In this embodiment, the lower pressing plate 7 is in an inverted sucker shape that slopes upward from the center to the edge, the bottom of the feeding cylinder 5 is located above the center of the lower pressing plate 7, that is, when the lower pressing plate 7 rotates, the material falling onto the lower pressing plate 7 from the feeding cylinder 5 moves downward under the centrifugal action to the edge of the lower pressing plate 7, is extruded and ground by the lower pressing plate 7 and the upper pressing plate 6 during the movement process, so that the crushed material starts to be crushed from the surface, falls into the bottom of the inner cylinder 3 through the sieve holes 71, and is discharged from the discharge holes 10.
In this embodiment, a slag discharging hole 15 penetrating between the outer cylinder 2 and the inner cylinder 3 is formed in the side wall of the inner cylinder 3 at a position corresponding to the gap between the upper platen 6 and the lower platen 7.
In this embodiment, the bottom of feed cylinder 5 is the arc-shaped connecting ball 8 in the surface, the center of last pressure disk 6 is connected to in the connecting ball 8 to can incline towards arbitrary direction around connecting ball 8, just the upper surface circumference evenly distributed of last pressure disk 6 is connected with many supporting component 9, the other end of supporting component 9 is connected to the outer wall of feed cylinder 5.
In this embodiment, the upper platen 6 is in the shape of an inverted sucker which is inclined upward from the center to the edge, and the gap between the upper platen and the lower platen 7 is gradually decreased from the center to the edge. That is, when the material above which the lower platen 7 rotates moves toward the edge, the pressure of the upper platen 6 against the material gradually increases to gradually crush the material from the surface to the inside, and the material having a harder inside tilts the upper platen 6 against the pressure of the support member 9, thereby being discharged from the slag discharge hole 15.
In this embodiment, a plurality of grinding teeth 14 are distributed on the lower surface of the upper platen 6 and the upper surface of the upper platen 6, and the grinding teeth 14 that are opposite up and down are staggered with each other. So that the materials are fully ground in the rotation and extrusion processes, and the grinding efficiency is improved.
In this embodiment, the supporting component 9 includes a hydraulic rod 91, two ends of the hydraulic rod 91 are respectively connected with the upper platen 6 and the feeding cylinder 5 through universal joints, and a spring 92 is further sleeved on the periphery of the hydraulic rod 91.
In this embodiment, the cylinder of the hydraulic rod 91 is provided with a thread 93, and the thread 93 is sleeved with a threaded sleeve 94, and the spring 92 is limited between the threaded sleeve 94 and the end of the piston rod of the hydraulic rod 91. That is, the pressure of the spring 92 against the upper platen 6 can be adjusted by rotating the screw 94, thereby changing the pressure that the material is required to be discharged from the slag discharging hole 15 to overcome, so as to adjust the grinding degree.
In this embodiment, the method for grinding the quicklime further includes:
the position of the screw sleeve 94 in each supporting component 9 is adjusted to enable the spring 92 to apply pressure to the upper pressing disc 6, calcined limestone is evenly input from the feeding cylinder 5 through the lifting conveying belt, the limestone falling onto the lower pressing disc 7 from the feeding cylinder 5 moves downwards under the centrifugal action to the edge of the lower pressing disc 7 when the lower pressing disc 7 rotates, the limestone is extruded and ground by the lower pressing disc 7 and the upper pressing disc 6 in the moving process, the pressure of the upper pressing disc 6 on the limestone gradually increases to enable the limestone to be gradually crushed from the surface to the inside, crushed quicklime powder falls into the bottom of the inner cylinder 3 through the sieve holes 71, the limestone is discharged and collected from the discharging holes 10, and the insufficiently calcined limestone overcomes the pressure of the supporting component 9 to enable the upper pressing disc 6 to incline, and then is discharged and collected from the deslagging holes 15 for next calcination.
In this embodiment, the threaded sleeves 94 in the supporting component 9 are respectively adjusted to different positions so that the pressure applied by the springs 92 to the upper platen 6 is gradually reduced from one side to the other side, so that insufficiently calcined limestone can be gathered on the side with smaller pressure of the upper platen 6 in the rotation process of the lower platen 7, so that discharged insufficiently calcined limestone can be collected, and the upper platen 6 can not be inclined due to the fact that two limestone with similar sizes and hardness are symmetrically distributed and clamped on the upper platen 6.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a crocus processing system that quick lime processing was used, includes base (1), its characterized in that, be fixed with urceolus (2) on base (1), urceolus (2) internal fixation have rather than concentric inner tube (3), inner tube (3) top is fixed with support (4), support (4) center is fixed with feed cylinder (5), feed cylinder (5) peripheral cover is equipped with upper platen (6) that are located inner tube (3), the certain distance department in upper platen (6) in inner tube (3) is equipped with lower platen (7), a plurality of sieve meshes (71) that link up from top to bottom are seted up on lower platen (7) surface, the center of lower platen (7) is rotationally set up in fixed cylinder (11) through pivot (12), fixed cylinder (11) and inner tube (3) bottom fixed connection, still be equipped with motor (13) that can drive lower platen (7) rotation in fixed cylinder (11);
a slag discharging hole (15) penetrating between the outer cylinder (2) and the inner cylinder (3) is formed in the side wall of the inner cylinder (3) at the position corresponding to the gap between the upper pressure plate (6) and the lower pressure plate (7);
the bottom of the feeding cylinder (5) is provided with a connecting ball (8) with an arc-shaped surface, the center of the upper pressing plate (6) is connected into the connecting ball (8) and can incline towards any direction around the connecting ball (8), a plurality of supporting components (9) are uniformly distributed on the circumference of the upper surface of the upper pressing plate (6), and the other end of the supporting component (9) is connected to the outer wall of the feeding cylinder (5);
the supporting component (9) comprises a hydraulic rod (91), two ends of the hydraulic rod (91) are respectively connected with the upper pressure plate (6) and the feeding cylinder (5) through universal joints, and a spring (92) is sleeved on the periphery of the hydraulic rod (91);
the cylinder body of the hydraulic rod (91) is provided with a thread (93), the thread (93) is sleeved with a screw sleeve (94), and the spring (92) is limited between the screw sleeve (94) and the tail end of a piston rod of the hydraulic rod (91);
the lower pressure plate (7) is in an inverted sucker shape which is inclined upwards from the center to the edge, and the bottom of the feeding cylinder (5) is positioned above the center of the lower pressure plate (7);
the upper pressure plate (6) is in an inverted sucker shape which is inclined upwards from the center to the edge, and the gap between the upper pressure plate and the lower pressure plate (7) is gradually decreased from the center to the edge;
the lower surface of the upper pressing plate (6) and the upper surface of the upper pressing plate (6) are provided with a plurality of grinding teeth (14), and the upper and lower opposite grinding teeth (14) are staggered.
2. A grinding processing method, which adopts a grinding processing system for quick lime processing according to claim 1, characterized in that, the position of a screw sleeve (94) in each supporting component (9) is adjusted to enable a spring (92) to apply pressure to an upper pressure plate (6), calcined limestone is evenly input from a feeding cylinder (5) through a lifting conveying belt, a motor (13) is started to enable limestone falling onto the lower pressure plate (7) from the feeding cylinder (5) to move towards the edge of the lower pressure plate (7) under the centrifugal action when the lower pressure plate (7) rotates, the limestone is extruded and ground by the lower pressure plate (7) and the upper pressure plate (6) in the moving process, the pressure of the upper pressure plate (6) on the limestone gradually increases to gradually crush the limestone from the surface to the inside, crushed quick lime powder falls into the bottom of the inner cylinder (3) through a sieve opening (71), the calcined limestone is discharged and collected from a discharging hole (10), and the insufficiently calcined limestone overcomes the pressure of the supporting component (9) to enable the upper pressure plate (6) to move towards the edge of the lower pressure plate (7) to be discharged from a slag discharging hole (15) and collected for next calcination.
3. A grinding method according to claim 2, characterized in that the screw sleeves (94) in the supporting component (9) are respectively adjusted to different positions so that the pressure exerted by the springs (92) on the upper pressing plate (6) is gradually reduced from one side to the other side, and the insufficiently calcined limestone can be gathered on one side of the upper pressing plate (6) with small pressure in the rotating process of the lower pressing plate (7), so that the discharged insufficiently calcined limestone can be conveniently collected, and the upper pressing plate (6) can not be inclined due to the fact that two pieces of limestone with similar size and hardness are symmetrically distributed and clamped by the upper pressing plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210611326.2A CN115007270B (en) | 2022-05-31 | 2022-05-31 | Milling system and milling method for processing quicklime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210611326.2A CN115007270B (en) | 2022-05-31 | 2022-05-31 | Milling system and milling method for processing quicklime |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115007270A CN115007270A (en) | 2022-09-06 |
| CN115007270B true CN115007270B (en) | 2023-11-10 |
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| CN202210611326.2A Active CN115007270B (en) | 2022-05-31 | 2022-05-31 | Milling system and milling method for processing quicklime |
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| CN116020623B (en) * | 2022-10-31 | 2024-06-11 | 江西金博实业有限公司 | Pulping device for puffed rice milk beverage raw material |
| CN116213064B (en) * | 2022-11-25 | 2024-02-27 | 湖南顺锂科技有限公司 | New material research and development is with smashing effectual waste recovery crushing system |
| CN116510872B (en) * | 2023-07-05 | 2023-11-21 | 泉州迪特工业产品设计有限公司 | Multistage combined type efficient crusher |
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| CN113559981A (en) * | 2021-09-24 | 2021-10-29 | 江苏沪申钛白科技有限公司 | A reducing mechanism for titanium dioxide production |
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|---|---|---|---|---|
| GB418960A (en) * | 1934-04-23 | 1934-11-02 | Mads Ardahl Madsen | Improvements in grinding mills |
| JPH09313963A (en) * | 1996-05-31 | 1997-12-09 | Nittetsu Mining Co Ltd | Grinding method and apparatus therefor |
| CN107999202A (en) * | 2017-11-06 | 2018-05-08 | 李南翔 | A kind of multi-stage, efficient reducing mechanism of ceramic raw material |
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| CN115007270A (en) | 2022-09-06 |
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