CN115555567A - Preparation method and preparation device of high-purity metal nano powder - Google Patents
Preparation method and preparation device of high-purity metal nano powder Download PDFInfo
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- CN115555567A CN115555567A CN202110744829.2A CN202110744829A CN115555567A CN 115555567 A CN115555567 A CN 115555567A CN 202110744829 A CN202110744829 A CN 202110744829A CN 115555567 A CN115555567 A CN 115555567A
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- 239000002184 metal Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000011858 nanopowder Substances 0.000 title claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 34
- 238000000227 grinding Methods 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims description 27
- 239000002105 nanoparticle Substances 0.000 claims description 18
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 239000002135 nanosheet Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000009775 high-speed stirring Methods 0.000 claims description 3
- 239000011156 metal matrix composite Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011261 inert gas Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract 1
- 239000002086 nanomaterial Substances 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a preparation method and a preparation device of high-purity metal nano powder. According to the preparation method and the preparation device of the high-purity metal nano powder, the discharge port can be rotated while driving the rotating block to rotate, the discharge port and the first conveying device can be rotated when the rotating block rotates, the first conveying device can conveniently adjust the discharge angle as required, meanwhile, the inert gas with high purity is used, the grinding device is blown after gas precooling, the metal powder is cooled and conveyed to the collecting device by using the air flow, and the continuous preparation and separation effects are realized.
Description
Technical Field
The invention relates to the technical field of metal processing equipment, in particular to a preparation method and a preparation device of high-purity metal nano powder.
Background
The high-purity metal nano powder has the dimension range of 1 to 100nm, and a material which has a special physical and chemical effect obviously different from a conventional material is called a nano material. Metallic nanomaterials are an important branch of nanomaterials. The metal nano powder belongs to a zero-dimensional nano material, and the atomic and electronic structures of the metal nano powder are different from those of metal particles with the same chemical components. It has magnetic, optical, electrical, acoustic, thermal, force and chemical properties that are different from those of macroscopic objects and individual atoms.
The preparation method of high-purity metal nano powder and the preparation device thereof in the current market have many defects, the first conveying device is inconvenient to adjust the discharging angle, and the crushing device is inconvenient to be connected with the second conveying device, so that the technology capable of improving the preparation method of high-purity metal nano powder and the structure of the preparation device thereof is urgently needed in the market to perfect the equipment.
Disclosure of Invention
The present invention is directed to a method and an apparatus for preparing high purity metal nanopowder, which solves the problems of inconvenience in adjusting the discharge angle of a first conveyor and inconvenience in connecting a pulverization apparatus to a second conveyor, which are caused by the disadvantages of the conventional method and apparatus for preparing high purity metal nanopowder in the market in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of high-purity metal nano powder and a preparation device thereof comprise a crushing device and a grinding device, wherein the bottom of the crushing device is provided with a first conveying device, wherein,
a notch is formed in one end of the first conveying device, one end, close to the notch, of the first conveying device is connected with a rotating block, a discharge port is connected between the rotating blocks, a first rotating shaft is connected to one side of the discharge port, an air cylinder is connected to one side of the first rotating shaft, a second rotating shaft is connected between the air cylinder and the first conveying device, and a crushing device is arranged at one end, close to the discharge port, of the first conveying device;
the grinding device is characterized in that a first connecting block is connected to the bottom of the grinding device, a fixing rod is connected to one side of the first connecting block, an extrusion groove is formed in one side of the fixing rod, positioning blocks are connected to two sides of the extrusion groove, springs are connected between the positioning blocks, a second connecting block is arranged on one side of the first connecting block, the fixing rod is close to the fixing rod, a fixing groove is formed in one side of the second connecting block, a connecting pipe is connected to one side of the second connecting block, one end of the connecting pipe is connected with a second conveying device, and the grinding device is arranged at the bottom of the second conveying device.
Preferably, the rotating blocks are symmetrically arranged in two groups around the center of the discharge port, and a rotating structure is formed between the first conveying device and the discharge port through the rotating blocks.
Preferably, a telescopic structure is formed between the first rotating shaft and the second rotating shaft through the air cylinder, a rotating structure is formed between the discharge port and the air cylinder through the first rotating shaft, and a rotating structure is formed between the first conveying device and the air cylinder through the second rotating shaft.
Preferably, the fixing rod and the fixing groove are rectangular, and the fixing rod is connected with the fixing groove in a sliding mode.
Preferably, the extrusion groove is in sliding connection with the positioning blocks, and the positioning blocks form a telescopic structure through springs.
Preferably, the connecting pipe is cylindrical, and the connecting pipe is made of a telescopic corrugated pipe material.
A method for preparing high-purity metal nano powder comprises the following steps:
step one, grinding spherical metal matrix powder to obtain micro-nano flaky metal matrix powder with a large specific surface area, and simultaneously reducing the grain size of the metal matrix to an ultra-fine grain range;
step two, adding the micro-nano flaky metal matrix powder obtained in the step one and nano particles into a stirrer according to a design proportion, and uniformly dispersing the nano particles on the surface of the micro-nano flaky metal matrix powder by high-speed stirring and mixing under a protective atmosphere to obtain mixed powder with uniformly dispersed nano particles;
step three, performing short-time mechanical grinding treatment on the mixed powder obtained in the step two to enable the nano particles to be embedded into the micro-nano flaky metal matrix powder, so as to obtain composite powder with uniformly dispersed nano particles;
and step four, pressing the composite powder obtained in the step three into a blank, sintering and densifying to obtain the nano-particle reinforced superfine crystal metal matrix composite.
Preferably, the diameter of the spherical metal matrix powder is between 1 and 80 μm.
Preferably, the grain size of the micro-nano flaky metal matrix powder obtained after grinding is 50-400nm, the specific surface area is 10-20 times of that of the original spherical metal matrix powder, the thickness is 0.1-1 μm, and the sheet diameter is 5-50 μm.
Compared with the prior art, the invention has the beneficial effects that: the preparation method and the preparation device of the high-purity metal nano powder comprise the following steps:
1. the discharging device is provided with an air cylinder, wherein the air cylinder can push the first rotating shaft to move when working, the discharging port can be pushed to rotate when moving, the discharging port can rotate with the air cylinder through the first rotating shaft while rotating, the discharging port can drive the rotating block to rotate while rotating, the discharging port and the first conveying device can rotate when the rotating block rotates, and the first conveying device can conveniently adjust a discharging angle as required;
2. it can stimulate through pulling second connecting block to be provided with the connecting pipe, the connecting pipe can extend through the scalable bellows material of self when receiving the pulling, the second connecting block can drive the fixed slot and dock the slip with the dead lever when the connecting pipe extends, can extrude locating piece one side inclined plane when the fixed slot slides, the locating piece can extrude the spring when receiving the extrusion, the fixed slot can slide to the dead lever bottom when the locating piece extrudees extrusion inslot portion, the locating piece can reset through spring self elasticity, can fix the second connecting block after the locating piece resets, make things convenient for and can carry out the high-speed joint between reducing mechanism and the second conveyer.
3. Meanwhile, inert gas with high purity is blown through the grinding device after precooling, and the metal powder is cooled and conveyed to the collecting device by using airflow, so that the effects of continuous preparation and separation are realized.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is an enlarged view of part A of the present invention;
FIG. 4 is an enlarged view of the part B of the present invention.
In the figure: 1. a crushing device; 2. a first conveying device; 3. a notch; 4. rotating the block; 5. a discharge port; 6. a first rotating shaft; 7. a cylinder; 8. a second rotating shaft; 9. a crushing device; 10. a first connection block; 11. fixing the rod; 12. extruding a groove; 13. positioning a block; 14. a spring; 15. a second connecting block; 16. a fixing groove; 17. a connecting pipe; 18. a second conveying device; 19. a milling device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1-4, the present invention provides a technical solution: a preparation method of high-purity metal nano powder and a preparation device thereof comprise a crushing device 1, a first conveying device 2, a gap 3, a rotating block 4, a discharge hole 5, a first rotating shaft 6, a cylinder 7, a second rotating shaft 8, a crushing device 9, a first connecting block 10, a fixing rod 11, an extrusion groove 12, a positioning block 13, a spring 14, a second connecting block 15, a fixing groove 16, a connecting pipe 17, a second conveying device 18 and a grinding device 19, wherein the first conveying device 2 is arranged at the bottom of the crushing device 1,
a notch 3 is formed in one end of the first conveying device 2, one end of the first conveying device 2 close to the notch 3 is connected with a rotating block 4, two groups of rotating blocks 4 are symmetrically arranged about the center of a discharge port 5, a rotating structure is formed between the first conveying device 2 and the discharge port 5 through the rotating block 4, the rotating block 4 can be driven to rotate while the discharge port 5 rotates, the discharge port 5 and the first conveying device 2 can rotate when the rotating block 4 rotates, the discharge port 5 is connected between the rotating blocks 4, a first rotating shaft 6 is connected to one side of the discharge port 5, a telescopic structure is formed between the first rotating shaft 6 and a second rotating shaft 8 through an air cylinder 7, a rotating structure is formed between the discharge port 5 and the air cylinder 7 through a first rotating shaft 6, a rotating structure is formed between the first conveying device 2 and the air cylinder 7 through a second rotating shaft 8, the air cylinder 7 can push the first rotating shaft 6 to move when working, the first rotating shaft 6 can push the discharge port 5 to rotate when moving, the discharge port 5 can rotate with the air cylinder 7 through the first rotating shaft 6, an air cylinder 7 is connected to one side of the first rotating shaft 6, an air cylinder 7 is connected between the first rotating shaft 7 and the first conveying device 2, and the second rotating device 2, and a crushing device 9 is connected to one end of the discharge port 2 close to the first conveying device 2;
the bottom of the crushing device 9 is connected with a first connecting block 10, one side of the first connecting block 10 is connected with a fixed rod 11, the fixed rod 11 and a fixed groove 16 are both rectangular, the fixed rod 11 and the fixed groove 16 are in sliding connection, a second connecting block 15 is pulled to drive the fixed groove 16 to be in butt joint with the fixed rod 11, the second connecting block 15 is pushed to drive the fixed groove 16 and the fixed rod 11 to slide, one side of the fixed rod 11 is provided with an extrusion groove 12, the extrusion groove 12 and a positioning block 13 are in sliding connection, a telescopic structure is formed between the positioning blocks 13 through a spring 14, an inclined plane on one side of the positioning block 13 can be extruded when the fixed groove 16 slides, the spring 14 can be extruded when the positioning block 13 is extruded, when the positioning block 13 is extruded into the extrusion groove 12, the fixed groove 16 can slide to the bottom of the fixed rod 11, locating piece 13 can reset through spring 14 self elasticity, can fix second connecting block 15 after locating piece 13 resets, 12 both sides in extrusion groove are connected with locating piece 13, be connected with spring 14 between the locating piece 13, first connecting block 10 one side is provided with second connecting block 15, is close to dead lever 11 fixed slot 16 has been seted up to second connecting block 15 one side, second connecting block 15 one side is connected with connecting pipe 17, connecting pipe 17 is cylindric, and connecting pipe 17 is scalable bellows material, and pulling second connecting block 15 can stimulate connecting pipe 17, can extend through the scalable bellows material of self when connecting pipe 17 receives the pulling, connecting pipe 17 one end is connected with second conveyer 18, milling equipment 19 sets up in second conveyer 18 bottom.
The working principle is as follows: when the preparation method and the preparation device of the high-purity metal nano powder are used, firstly, the preparation method and the preparation device of the high-purity metal nano powder need to be simply known, before the preparation method and the preparation device are used, a second conveying device 18 and a crushing device 9 need to be installed, a connecting pipe 17 can be pulled by pulling a second connecting block 15, the connecting pipe 17 can be extended by a self telescopic corrugated pipe material when pulled, the connecting pipe 17 is extended, the second connecting block 15 can drive a fixing groove 16 to be in butt joint with a fixing rod 11 to slide, the fixing groove 16 can be extruded when sliding, a spring 14 can be extruded when the positioning block 13 is extruded, the fixing groove 16 can slide to the bottom of the fixing rod 11 when the positioning block 13 is extruded into an extrusion groove 12, the positioning block 13 can be reset by the self elasticity of the spring 14, the second connecting block 15 can be fixed after the positioning block 13 is reset, the crushing device 9 and the second conveying device 19 can be used after being installed, the crushing device 1 can crush metal ores, the crushing device can be used after the crushing device 1 can crush the metal ores, after the crushed, the crushed metal ores can fall onto a first conveying device 2, the crushed ores can be rotated, the first conveying device 2 can drive a first conveying device 2, the first conveying device 2 can drive a rotating cylinder 7 to rotate a discharge port 6 to rotate, the first conveying device 5 to rotate, and push the discharge port 6 when the first conveying device 5, and the discharge port 5 to rotate, and the discharge port 5 when the discharge port 5 to rotate, the discharge port 5, the ore can be further crushed by the crushing device 9, the crushed ore can be conveyed into the second conveying device 18, the crushed ore can be conveyed into the grinding device 19 by the second conveying device 18, and the grinding device 19 can grind the ore, and the content which is not described in detail in the description belongs to the prior art which is well known to the person skilled in the art;
meanwhile, when the high-purity metal nano powder is prepared, the spherical metal matrix powder is ground to obtain the micro-nano flaky metal matrix powder with large specific surface area, and the grain size of the metal matrix is reduced to the ultra-fine grain range; adding the obtained micro-nano flaky metal matrix powder and nano particles into a stirrer according to a designed proportion, and uniformly dispersing the nano particles to the surface of the micro-nano flaky metal matrix powder by high-speed stirring and mixing in a protective atmosphere to obtain uniformly dispersed mixed powder of the nano particles; performing short-time mechanical grinding treatment on the obtained mixed powder to enable nano particles to be embedded into the micro-nano sheet metal matrix powder, so as to obtain composite powder with uniformly dispersed nano particles; the obtained composite powder is pressed into a blank, sintered and densified to obtain the nano-particle reinforced superfine crystal metal matrix composite material.
The diameter of the spherical metal matrix powder is between 1 and 80 μm.
The grain size of the micro-nano sheet metal matrix powder obtained after grinding is 50-400nm, the specific surface area is 10-20 times of that of the original spherical metal matrix powder, the thickness is 0.1-1 mu m, and the sheet diameter is 5-50 mu m.
Meanwhile, inert gas with high purity is blown through the grinding device after precooling, and the metal powder is cooled and conveyed to the collecting device by using airflow, so that the effects of continuous preparation and separation are realized.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.
Claims (9)
1. A preparation facilities of high-purity metal nanometer powder, includes breaker (1) and milling equipment (19), its characterized in that: the bottom of the crushing device (1) is provided with a first conveying device (2), wherein,
a notch (3) is formed in one end of the first conveying device (2), one end of the first conveying device (2) close to the notch (3) is connected with a rotating block (4), a discharging port (5) is connected between the rotating blocks (4), one side of the discharging port (5) is connected with a first rotating shaft (6), one side of the first rotating shaft (6) is connected with an air cylinder (7), a second rotating shaft (8) is connected between the air cylinder (7) and the first conveying device (2), and one end of the first conveying device (2) close to the discharging port (5) is provided with a crushing device (9);
reducing mechanism (9) bottom is connected with first connecting block (10), first connecting block (10) one side is connected with dead lever (11), extrusion groove (12) have been seted up to dead lever (11) one side, extrusion groove (12) both sides are connected with locating piece (13), be connected with spring (14) between locating piece (13), first connecting block (10) one side is provided with second connecting block (15), is close to dead lever (11) fixed slot (16) have been seted up to second connecting block (15) one side, second connecting block (15) one side is connected with connecting pipe (17), connecting pipe (17) one end is connected with second conveyer (18), milling equipment (19) set up in second conveyer (18) bottom.
2. The apparatus for preparing high-purity metal nanopowder according to claim 1, wherein: the two groups of rotating blocks (4) are symmetrically arranged around the center of the discharge port (5), and a rotating structure is formed between the first conveying device (2) and the discharge port (5) through the rotating blocks (4).
3. The apparatus for preparing high-purity metal nanopowder according to claim 1, wherein: constitute extending structure through cylinder (7) between first pivot (6) and second pivot (8), and constitute revolution mechanic through first pivot (6) between discharge gate (5) and cylinder (7) to constitute revolution mechanic through second pivot (8) between first transmission device (2) and cylinder (7).
4. The apparatus for preparing high-purity metal nanopowder according to claim 1, wherein: the fixing rod (11) and the fixing groove (16) are rectangular, and the fixing rod (11) is connected with the fixing groove (16) in a sliding mode.
5. The apparatus for preparing high-purity metal nanopowder according to claim 1, wherein: the extrusion groove (12) is in sliding connection with the positioning blocks (13), and the positioning blocks (13) form a telescopic structure through springs (14).
6. The apparatus for preparing high-purity metal nanopowder according to claim 1, wherein: connecting pipe (17) are cylindric, and connecting pipe (17) are scalable bellows material.
7. The method of claim 1, wherein the method comprises the steps of:
step one, grinding spherical metal matrix powder to obtain micro-nano flaky metal matrix powder with a large specific surface area, and simultaneously reducing the grain size of the metal matrix to an ultra-fine grain range;
step two, adding the micro-nano flaky metal matrix powder obtained in the step one and nano particles into a stirrer according to a design proportion, and uniformly dispersing the nano particles on the surface of the micro-nano flaky metal matrix powder by high-speed stirring and mixing under a protective atmosphere to obtain mixed powder with uniformly dispersed nano particles;
thirdly, performing short-time mechanical grinding treatment on the mixed powder obtained in the second step to enable nano particles to be embedded into the micro-nano sheet metal matrix powder, and obtaining composite powder with uniformly dispersed nano particles;
and step four, pressing the composite powder obtained in the step three into a blank, sintering and densifying to obtain the nano-particle reinforced superfine crystal metal matrix composite.
8. The apparatus for preparing high purity metal nano powder according to claim 7, wherein: the diameter of the spherical metal matrix powder is between 1 and 80 mu m.
9. The apparatus for preparing high-purity metal nanopowder according to claim 7, wherein: the grain size of the micro-nano sheet metal matrix powder obtained after grinding is 50-400nm, the specific surface area is 10-20 times of that of the original spherical metal matrix powder, the thickness is 0.1-1 mu m, and the sheet diameter is 5-50 mu m.
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CN106269149A (en) * | 2016-08-04 | 2017-01-04 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of titanium sponge processing crushing system and method |
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