CN111330713A - Jet mill main machine - Google Patents
Jet mill main machine Download PDFInfo
- Publication number
- CN111330713A CN111330713A CN202010191373.7A CN202010191373A CN111330713A CN 111330713 A CN111330713 A CN 111330713A CN 202010191373 A CN202010191373 A CN 202010191373A CN 111330713 A CN111330713 A CN 111330713A
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- Prior art keywords
- upper cover
- jet mill
- liner
- side wall
- lining
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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
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/063—Jet mills of the toroidal type
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides a jet mill main machine, which comprises a jet mill upper cover, a jet mill lower cover detachably connected with the jet mill upper cover, and a main machine liner with a milling nozzle, wherein the main machine liner comprises a liner side wall part and a liner bottom plate part, the section of which is annular, the upper end of the liner side wall part is abutted against the jet mill upper cover, the lower end of the liner side wall part is fixedly connected with the liner bottom plate part, the lower surface of the liner bottom plate part is abutted against the jet mill lower cover, the milling nozzle is arranged on the liner side wall part, the main machine liner is of an integrated structure, a limit ring part is arranged on the jet mill lower cover, and the limit ring part is sleeved outside the main machine liner. The jet mill main machine adopts the design, so that the main machine lining can be conveniently detached when needed, the main machine lining can be cleaned and replaced, the maintenance work of the jet mill main machine is further facilitated, and the jet mill main machine can meet different crushing requirements by replacing the main machine lining with different jet angles.
Description
Technical Field
The invention relates to the technical field of jet mills, in particular to a jet mill main machine.
Background
The working principle of the flat jet mill is generally as follows: the airflow is accelerated to supersonic speed airflow by the Laval nozzle and then enters the crushing and grinding cavity, and simultaneously, the materials are accelerated by the Venturi nozzle and guided into the crushing and grinding cavity for synchronous crushing. Because the crushing nozzle and the crushing grinding cavity are arranged at an acute angle, the high-speed jet air flow drives the materials to do circular motion in the crushing grinding cavity, and mutual impact, collision and friction are generated among particles and between the particles and corresponding wall surfaces, so that the materials are crushed. The fine particles are guided into a central outlet pipeline of the pulverizer under the drive of centripetal airflow and enter a cyclone separator for collection, and the coarse particles are thrown to the peripheral wall of the pulverizing grinding cavity to do circular motion under the action of centrifugal force and continue to be pulverized. And qualified fine powder enters the high-efficiency cyclone separator along with the airflow and is separated out, and the airflow is finally filtered and purified by the dust collector and then is discharged into the atmosphere. The equipment is currently used in the industries with certain clean requirements such as pharmacy, chemical industry, new materials, cosmetics and the like, and the equipment is frequently required to be frequently disassembled and assembled so as to be thoroughly cleaned. However, the existing flat type air flow mill generally has the following defects:
1. the structure and the main part of the existing equipment are usually closed, cleaning or convenient disassembly cannot be realized between all parts which are enclosed into an annular air chamber, and the annular air chamber is used for introducing compressed air during working, so that the workload, the working strength and the equipment assembly and resetting difficulty can be improved during frequent disassembly and assembly and thorough cleaning, and the work is not facilitated.
2. When smashing different materials, need change the angle of smashing nozzle and crushing cavity, the structure of current equipment, its seat ring that has crushing nozzle usually can not dismantle or can not convenient dismantlement, reset, leads to the seat ring not convenient to change. If the seat ring needs to be replaced to obtain a different angle of the pulverizing nozzle, the entire apparatus is generally exchanged, resulting in higher costs.
3. The material has certain friction with organism chamber wall at crushing in-process, and long-term work has certain wearing and tearing to equipment inside, and current equipment cavity inner wall does not have the inside lining usually or with the fixed inside lining of binder, when equipment is inside to have wearing and tearing, can not change usually or need get rid of after the binder just can change the inside lining, so the inside lining is changed the degree of difficulty great, difficult operation, or direct selection changes whole equipment, causes economic value loss great.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a jet mill main body, which has a main body liner with a pulverizing nozzle that is easy to disassemble.
In order to achieve the purpose, the invention provides a jet mill main machine, which comprises a jet mill upper cover, a jet mill lower cover detachably connected with the jet mill upper cover, and a main machine liner with a milling nozzle, wherein the main machine liner comprises a liner side wall part and a liner bottom plate part, the section of the liner side wall part is annular, the upper end of the liner side wall part is abutted against the jet mill upper cover, the lower end of the liner side wall part is fixedly connected with the liner bottom plate part, the lower surface of the liner bottom plate part is abutted against the jet mill lower cover, the milling nozzle is arranged on the liner side wall part, the main machine liner is of an integrated structure, a limit ring part is arranged on the jet mill lower cover, and the limit ring part is sleeved outside the main machine liner.
Furthermore, the jet milling lower cover comprises a lower cover bottom plate part and a lower cover side wall part with an annular cross section, the upper end of the lower cover side wall part is abutted against the jet milling upper cover, and the lower end of the lower cover side wall part is fixedly connected with the lower cover bottom plate part.
Furthermore, the upper end of the side wall part of the lower cover is provided with an upper limiting bulge which protrudes inwards, the upper limiting bulge forms the limiting ring part, and the upper limiting bulge is sleeved outside the side wall part of the lining of the host machine.
Further, a cavity communicated with the crushing nozzle is formed between the outer side wall of the main machine liner and the jet milling lower cover, the cavity is communicated with an air inlet positioned on the side wall part of the lower cover, a sealing ring is arranged between the upper limiting bulge and the side wall part of the liner, and a sealing ring is arranged at the contact part of the bottom plate part of the lower cover and the bottom plate part of the liner.
Furthermore, a lower limiting bulge is arranged on the bottom plate part of the lower cover, and the lower limiting bulge forms the limiting ring part.
Furthermore, the jet milling upper cover comprises an upper cover shell and an upper cover lining arranged on the upper cover shell, a milling cavity is formed between the upper cover lining and the main machine lining, and the milling nozzle is communicated with the milling cavity.
Furthermore, the jet mill main unit further comprises a discharging pipe communicated with the crushing cavity, the discharging pipe penetrates through an upper cover shell hole of the upper cover shell and an upper cover lining hole of the upper cover lining, the discharging pipe is in threaded connection with the upper cover shell, a locking flange is arranged at the lower end of the discharging pipe, the locking flange abuts against the lower end face of the upper cover lining, and the upper end face of the upper cover lining abuts against the upper cover shell.
Furthermore, the edge of the upper cover shell is provided with an extension retaining ring with an annular cross section, and the upper cover lining is embedded in the extension retaining ring.
Further, install the inlet pipe that is linked together with crushing chamber on the upper cover shell, just inlet pipe and upper cover shell welding.
Furthermore, the jet milling upper cover is fixedly connected with the jet milling lower cover through fastening screws.
As mentioned above, the main machine of the jet mill provided by the invention has the following beneficial effects:
in the jet mill main unit, the jet mill lower cover is detachably connected with the jet mill upper cover, the upper end of the side wall part of the lining of the main unit liner is propped against the jet mill upper cover, the lower surface of the inner substrate plate part of the main unit liner is propped against the jet mill lower cover, so as to limit the movement of the main machine lining along the up-down direction, and the jet milling lower cover is provided with a limit ring part which is sleeved outside the main machine lining, so as to limit the movement of the main machine liner along the horizontal direction by utilizing the matching action of the limit ring part and the main machine liner, thereby realizing the fixed installation of the host machine inner liner, and the assembly structure is convenient for disassembling the host machine inner liner when needed so as to clean and replace the host machine inner liner, the main machine of the jet mill is convenient to maintain, and the main machine of the jet mill can meet different crushing requirements by replacing main machine linings with different injection angles; and the liner of the main machine is of an integrated structure, so that the integral structure and the assembly process of the main machine of the jet mill are simplified, and the production cost of the main machine of the jet mill is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a main unit of an air flow mill in an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a host liner in an embodiment of the invention.
Description of the element reference numerals
1 jet mill upper cover 22 lower cover side wall portion
11 upper cover shell 221 upper limit projection
111 extending baffle 222 air inlet
112 round pipe part 3 host machine inner lining
12 lining side wall part of upper cover lining 31
13 discharging pipe 311 disintegrating nozzle
131 locking flange 32 lining bottom plate part
14 feed tube 41 Chamber
141 feed inlet 42 crushing cavity
142 feed nozzle 5 sealing ring
2 airflow crushing lower cover 6 fastening screw
21 bottom cover bottom plate part 7 base
211 lower limit bulge 71 screw hole
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention unless otherwise specified.
As shown in fig. 1 and 2, the present invention provides a jet mill main body, which includes a jet mill upper cover 1, a jet mill lower cover 2 detachably connected to the jet mill upper cover 1, and a main body liner 3 having a milling nozzle 311, wherein the main body liner 3 includes a liner side wall portion 31 and a liner bottom plate portion 32, the cross section of which is annular, the upper end of the liner side wall portion 31 abuts against the jet mill upper cover 1, the lower end of the liner side wall portion 31 is fixedly connected to the liner bottom plate portion 32, the lower surface of the liner bottom plate portion 32 abuts against the jet mill lower cover 2, the milling nozzle 311 is arranged on the liner side wall portion 31, the main body liner 3 is an integral structure, the jet mill lower cover 2 is provided with a limit ring portion, and the limit ring portion is sleeved outside the main body liner 3. In the jet mill main machine of the invention, the jet milling lower cover 2 is detachably connected with the jet milling upper cover 1, the upper end of the lining side wall part 31 of the main machine lining 3 is propped against the jet milling upper cover 1, the lower surface of the lining bottom plate part 32 of the main machine lining 3 is propped against the jet milling lower cover 2, so as to limit the host machine lining 3 to move along the up-and-down direction, and the jet milling lower cover 2 is provided with a limit ring part which is sleeved outside the host machine lining 3, so as to limit the movement of the main machine inner liner 3 along the horizontal direction by utilizing the matching action of the limit ring part and the main machine inner liner 3, thereby realizing the fixed installation of the main machine inner liner 3, and the assembly structure is convenient for disassembling the main machine inner liner 3 when in need so as to clean and replace the main machine inner liner 3, the maintenance work of the jet mill main machine is further facilitated, and the jet mill main machine can meet different crushing requirements by replacing the main machine lining 3 with different injection angles; and the main machine lining 3 is of an integrated structure, so that the integral structure and the assembly process of the main machine of the jet mill are simplified, and the production cost of the main machine of the jet mill is reduced.
As shown in fig. 1, in the present embodiment, the jet milling lower cover 2 includes a lower cover bottom plate 21 and a lower cover side wall 22 having an annular cross section, an upper end of the lower cover side wall 22 abuts against the jet milling upper cover 1, and a lower end of the lower cover side wall 22 is fixed to the lower cover bottom plate 21. The airflow crushing lower cover 2 is of an integrated structure in the embodiment. Meanwhile, as shown in fig. 1, in the present embodiment, the upper end of the lower cover side wall 22 is provided with an upper limiting protrusion 221 protruding inward, the upper limiting protrusion 221 forms a limiting ring portion, and the upper limiting protrusion 221 is sleeved outside the liner side wall 31 of the host liner 3. In this embodiment, the outer circumferential surface of the liner sidewall 31 is in transition fit with the inner circumferential surface of the upper limiting protrusion 221 of the lower cover sidewall 22. The lower end surface of the inner substrate plate portion 32 is closely attached to the upper end surface of the lower cover bottom plate portion 21. As shown in fig. 1, in this embodiment, a chamber 41 communicating with the pulverizing nozzle 311 is formed between the outer sidewall of the mainframe liner 3 and the jet milling bottom cover 2, the chamber 41 communicates with the air inlet 222 on the bottom cover sidewall 22, a seal ring 5 is disposed between the upper limiting protrusion 221 and the liner sidewall 31, and a seal ring 5 is disposed at the contact position of the bottom cover plate 21 and the liner bottom plate 32 to perform a sealing function and enhance the sealing performance of the chamber 41. In addition, as shown in fig. 1, in the present embodiment, the lower cover bottom plate portion 21 is provided with a lower limiting protrusion 211, and the lower limiting protrusion 211 constitutes another limiting ring portion. The two limit ring portions are respectively the upper limit protrusion 221 and the lower limit protrusion 211, and are abutted against the upper end and the lower end of the host liner 3, so that the host liner 3 is effectively limited to move along the horizontal direction.
As shown in fig. 1, the air current pulverizing upper cover 1 of the present embodiment includes an upper cover housing 11 and an upper cover liner 12 mounted on the upper cover housing 11, a pulverizing chamber 42 is formed between the upper cover liner 12 and the main unit liner 3, and a pulverizing nozzle 311 is communicated with the pulverizing chamber 42. As shown in fig. 1, the jet mill main unit further includes a discharging pipe 13 communicating with the pulverizing cavity 42, the discharging pipe 13 is inserted into an upper cover shell hole of the upper cover shell 11 and an upper cover liner hole of the upper cover liner 12, the discharging pipe 13 is in threaded connection with the upper cover shell 11, a locking flange 131 is disposed at a lower end of the discharging pipe 13, the locking flange 131 abuts against a lower end surface of the upper cover liner 12, an upper end surface of the upper cover liner 12 abuts against the upper cover shell 11, and an installation position of the discharging pipe 13 is adjusted by adjusting a threaded connection relationship between the discharging pipe 13 and the upper cover shell 11, so that the upper cover liner 12 is pressed against the upper cover shell 11 by the locking flange 131 of the discharging pipe 13, thereby fixedly installing the upper cover liner 12 on the upper cover shell 11, and enabling the lower end surface of the upper cover shell 11 to be tightly attached to the upper end surface of the upper cover liner 12. The discharge pipe 13 is provided with external threads, the round pipe part 112 at the upper end of the upper cover shell 11 is provided with internal threads, the external threads are meshed with the internal threads, and the function of fastening the upper cover lining 12 and the upper cover shell 11 is achieved after the discharge pipe 13 is screwed. In this embodiment, a packing 5 is provided between the upper end surface of the upper cover outer shell 11 and the upper cover inner liner 12. As shown in fig. 1, an extension retaining ring 111 having an annular cross section is disposed at an edge of the upper cover casing 11, and the upper cover liner 12 is embedded inside the extension retaining ring 111, so that the extension retaining ring 111 limits the upper cover liner 12 to move in the horizontal direction, thereby further enhancing the fixing effect on the upper cover liner 12 and effectively preventing the upper cover liner 12 from moving relative to the upper cover casing 11.
As shown in FIG. 1, the upper housing 11 is provided with a feed pipe 14 communicating with the pulverization chamber 42, and the feed pipe 14 is welded to the upper housing 11. During normal operation of the apparatus, material enters the grinding chamber 42 through the feed tube 14. The feeding pipe 14 is welded with the upper cover shell 11, so that high connection strength between the feeding pipe 14 and the upper cover shell 11 is ensured, and the installation process of the feeding pipe 14 is simplified. The angle between the feed tube 14 and the lid housing 11 is acute. The feed pipe 14 is provided with a feed inlet 141 and a feed nozzle 142, and the feed pipe 14 is also called a feed venturi.
As shown in fig. 1, in the present embodiment, the jet milling upper cover 1 is fixedly connected to the jet milling lower cover 2 through a fastening screw 6, specifically, the fastening screw 6 penetrates through the jet milling upper cover 1 and the jet milling lower cover 2 and then engages with an internal thread in a corresponding screw hole 71 on the base 7 to perform a fastening function, so as to press the jet milling upper cover 1 on the jet milling lower cover 2, and to realize a detachable connection between the jet milling upper cover 1 and the jet milling lower cover 2, and to realize a fixation of the two on the base 7. In the embodiment, the number of the fastening screws 6 is 8; in other embodiments, the number of fastening screws 6 varies according to the size of the device, without affecting the original design. When the jet milling upper cover 1 and the jet milling lower cover 2 are pressed, the sealing ring 5 between the upper limiting bulge 221 and the main machine liner 3 plays a sealing role.
In addition, as shown in fig. 1 and fig. 2, in the present embodiment, the main frame liner 3 is a circular groove, and the bottom of the main frame liner 3 is a closed structure. The liner sidewall 31 of the host liner 3 is provided with 6 pulverizing nozzles 311 uniformly distributed along the circumferential direction, the included angle between the nozzle center line of the pulverizing nozzle 311 and the centripetal normal line is an acute angle, and the preferred included angle is 30-45 degrees, the number of the pulverizing nozzles 311 can be adjusted according to different equipment treatment capacities and gas consumption, the design is not changed, and the aperture of the pulverizing nozzles 311 is additionally calculated according to the gas consumption and the host size. After the apparatus is operated, compressed air enters the chamber 41 through the air inlet 222 and is injected into the pulverizing chamber 42 through all the pulverizing nozzles 311 uniformly distributed on the main liner 3.
The jet mill host computer in this embodiment adopts above-mentioned structural design, change host computer inside lining 3 that can be convenient to through changing host computer inside lining 3, can use the host computer inside lining 3 that has different angles crushing nozzle 311 to satisfy the crushing demand of different materials. Simultaneously, this jet mill host computer passes through the cooperation relation between discharging pipe 13, upper cover shell 11 and the upper cover inside lining 12, change upper cover inside lining 12 that can be convenient. Compared with the prior equipment, the jet mill main machine has better effects in the aspects of convenience of disassembly and cleaning and quick and accurate assembly and resetting of the equipment.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A jet mill main machine is characterized by comprising a jet mill upper cover (1), a jet mill lower cover (2) detachably connected with the jet mill upper cover (1), and a main machine lining (3) with a milling nozzle (311), the main body liner (3) includes a liner side wall portion (31) having an annular cross section and an inner substrate plate portion (32), the upper end of the lining side wall part (31) is propped against the airflow crushing upper cover (1), the lower end of the lining side wall part (31) is fixed with an inner lining plate part (32), the lower surface of the inner substrate plate part (32) is abutted against the airflow crushing lower cover (2), the lining side wall part (31) is provided with the crushing nozzle (311), the host machine lining (3) is of an integrated structure, a limiting ring portion is arranged on the jet milling lower cover (2), and the limiting ring portion is sleeved outside the host machine lining (3).
2. The jet mill main unit according to claim 1, wherein the jet mill lower cover (2) comprises a lower cover bottom plate portion (21) and a lower cover side wall portion (22) with an annular cross section, the upper end of the lower cover side wall portion (22) abuts against the jet mill upper cover (1), and the lower end of the lower cover side wall portion (22) is fixedly connected with the lower cover bottom plate portion (21).
3. The main unit of the air flow mill as claimed in claim 2, wherein the upper end of the side wall portion (22) of the lower cover is provided with an upper limit protrusion (221) protruding inwards, the upper limit protrusion (221) forms the limit ring portion, and the upper limit protrusion (221) is sleeved outside the liner side wall portion (31) of the main unit liner (3).
4. The jet mill main unit according to claim 3, wherein a chamber (41) communicated with the pulverizing nozzle (311) is formed between the outer side wall of the main unit liner (3) and the jet milling lower cover (2), the chamber (41) is communicated with an air inlet (222) on the side wall part (22) of the lower cover, a sealing ring (5) is arranged between the upper limiting bulge (221) and the liner side wall part (31), and a sealing ring (5) is arranged at the contact part of the lower cover bottom plate part (21) and the inner substrate plate part (32).
5. The main unit of the air flow mill as claimed in claim 2 or 3, wherein the lower cover bottom plate part (21) is provided with a lower limit protrusion (211), and the lower limit protrusion (211) forms the limit ring part.
6. The jet mill main unit according to claim 1, wherein the jet mill upper cover (1) comprises an upper cover outer shell (11) and an upper cover inner liner (12) mounted on the upper cover outer shell (11), a milling cavity (42) is formed between the upper cover inner liner (12) and the main unit inner liner (3), and the milling nozzle (311) is communicated with the milling cavity (42).
7. The jet mill host machine according to claim 6, further comprising a discharge pipe (13) communicated with the pulverizing cavity (42), wherein the discharge pipe (13) is arranged in an upper cover shell hole of the upper cover shell (11) and an upper cover lining hole of the upper cover lining (12) in a penetrating manner, the discharge pipe (13) is in threaded connection with the upper cover shell (11), a locking flange (131) is arranged at the lower end of the discharge pipe (13), the locking flange (131) abuts against the lower end face of the upper cover lining (12), and the upper end face of the upper cover lining (12) abuts against the upper cover shell (11).
8. The jet mill main unit according to claim 6 or 7, wherein an extension retaining ring (111) with an annular cross section is arranged at the edge of the upper cover outer shell (11), and the upper cover inner liner (12) is embedded in the extension retaining ring (111).
9. The jet mill main unit according to claim 6, characterized in that the upper cover shell (11) is provided with a feeding pipe (14) communicated with the crushing cavity (42), and the feeding pipe (14) is welded with the upper cover shell (11).
10. The jet mill main unit according to claim 1, wherein the jet mill upper cover (1) is fixedly connected with the jet mill lower cover (2) through a fastening screw (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191373.7A CN111330713A (en) | 2020-03-18 | 2020-03-18 | Jet mill main machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191373.7A CN111330713A (en) | 2020-03-18 | 2020-03-18 | Jet mill main machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111330713A true CN111330713A (en) | 2020-06-26 |
Family
ID=71176399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010191373.7A Pending CN111330713A (en) | 2020-03-18 | 2020-03-18 | Jet mill main machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN111330713A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138827A (en) * | 2020-07-24 | 2020-12-29 | 宁波可可磁业股份有限公司 | Jet mill suitable for neodymium iron boron alloy and use method thereof |
| CN112169963A (en) * | 2020-07-24 | 2021-01-05 | 宁波可可磁业股份有限公司 | Jet mill for neodymium iron boron production and use method thereof |
| CN112206901A (en) * | 2020-07-24 | 2021-01-12 | 宁波可可磁业股份有限公司 | Anti-deposition airflow mill for neodymium iron boron alloy and method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138827A (en) * | 2020-07-24 | 2020-12-29 | 宁波可可磁业股份有限公司 | Jet mill suitable for neodymium iron boron alloy and use method thereof |
| CN112169963A (en) * | 2020-07-24 | 2021-01-05 | 宁波可可磁业股份有限公司 | Jet mill for neodymium iron boron production and use method thereof |
| CN112206901A (en) * | 2020-07-24 | 2021-01-12 | 宁波可可磁业股份有限公司 | Anti-deposition airflow mill for neodymium iron boron alloy and method thereof |
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| CN112169963B (en) * | 2020-07-24 | 2022-03-08 | 宁波可可磁业股份有限公司 | Jet mill for neodymium iron boron production and use method thereof |
| CN112206901B (en) * | 2020-07-24 | 2022-03-08 | 宁波可可磁业股份有限公司 | Anti-deposition airflow mill for neodymium iron boron alloy and method thereof |
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Application publication date: 20200626 |