CN115805121A - Grinding device and method for preparing battery-grade iron phosphate from waste lithium iron phosphate slag - Google Patents
Grinding device and method for preparing battery-grade iron phosphate from waste lithium iron phosphate slag Download PDFInfo
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- CN115805121A CN115805121A CN202211502995.2A CN202211502995A CN115805121A CN 115805121 A CN115805121 A CN 115805121A CN 202211502995 A CN202211502995 A CN 202211502995A CN 115805121 A CN115805121 A CN 115805121A
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- grinding
- fixedly connected
- iron phosphate
- box
- lithium iron
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 40
- 239000002893 slag Substances 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 title claims abstract description 27
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 title claims abstract description 24
- 229910000398 iron phosphate Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 27
- 238000012216 screening Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims description 37
- 238000007599 discharging Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000005955 Ferric phosphate Substances 0.000 description 3
- 229940032958 ferric phosphate Drugs 0.000 description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of lithium iron phosphate grinding, and discloses a grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag, which comprises a grinding box, a fixed grinding block and a rotary grinding block, wherein the left side of the upper surface of the grinding box is fixedly connected with a feed hopper, the lower surface of the grinding box is fixedly connected with a discharge port, the fixed grinding block is arranged on the inner wall of the grinding box through a buffer component, the upper surface of the grinding box is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a rotating shaft, and the bottom end of the rotating shaft is positioned in the grinding box and is provided with an up-and-down adjusting component; the waste lithium iron phosphate slag can be extruded while being subjected to rotary grinding, so that the grinding quality is improved, and the mounting ring drives the fixed grinding block to reset downwards and then drives the knocking rod to impact the screening box, so that the screening box vibrates, the blocking of screening holes is avoided, and the ground lithium iron phosphate is better screened.
Description
Technical Field
The invention relates to the technical field of grinding of lithium iron phosphate, in particular to a grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag.
Background
Lithium iron phosphate is often applied to lithium ion power battery's positive electrode material, compare nickel cobalt lithium manganate ternary material (NCM), nickel cobalt lithium aluminate ternary material (NCA), lithium cobaltate and lithium manganate, lithium iron phosphate positive electrode material has the security performance height, long cycle life, better high temperature performance and raw materials cost advantage such as low, have very good application prospect, in order to the reuse of the energy and avoid polluting, many producers can select to retrieve lithium element from old and useless lithium iron phosphate pole piece, the battery level iron phosphate powder is made to the rethread grinding.
The existing grinding device cannot carry out efficient circular grinding on lithium iron phosphate, the grinding effect is poor, grinding is caused to be different in size, the using effect is influenced, in order to improve the grinding effect, a part of enterprises can adopt and set a multistage grinding mechanism, the whole structure of the grinding device is complicated, the cost of equipment is also improved, and the using cost is increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag, which aims to solve the problems that the existing grinding device provided in the background technology cannot carry out efficient circulating grinding on lithium iron phosphate, the grinding effect is poor, the grinding size is different, the use effect is influenced, the overall structure of a multi-stage grinding mechanism is complex, the equipment cost is increased, and the use cost is increased.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the grinding device comprises a grinding box, a fixed grinding block and a rotary grinding block, wherein the left side of the upper surface of the grinding box is fixedly connected with a feed hopper, the lower surface of the grinding box is fixedly connected with a discharge port, the fixed grinding block is arranged on the inner wall of the grinding box through a buffer component, the upper surface of the grinding box is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a rotating shaft, the bottom end of the rotating shaft is located inside the grinding box and provided with an up-down adjusting component, the rotary grinding block is fixedly connected to the outer surface of the rotating shaft, a fixed cylinder is fixedly connected to the right side of the inner bottom of the grinding box, a screening box is arranged inside the fixed cylinder through a rotating component, a collecting component is arranged above the screening box, a guide plate is arranged inside the screening box and gradually inclines downwards, and the right end of the guide plate is located outside the grinding box and provided with a lifting component.
Preferably, the outer surface of the grinding box is fixedly connected with a fixing plate, four corners of the lower surface of the fixing plate are fixedly connected with supporting legs, and the bottom ends of the supporting legs are fixedly connected with anti-slip pads.
Preferably, the buffering subassembly includes collar, upper fixed ring, lower fixed ring, slide bar and spring, fixed grinding piece fixed connection is at the inner wall of collar, upper fixed ring and lower fixed ring be located the upper and lower both sides of collar respectively and with the inner wall fixed connection who grinds the case, the one end and the upper fixed ring fixed connection of slide bar, the other end of slide bar run through the collar and with lower fixed ring fixed connection, slide bar and collar sliding connection, the spring housing is established at the surface of slide bar, the one end and the lower fixed ring fixed connection of spring, the other end and the collar fixed connection of spring.
Preferably, the up-down adjusting component comprises a mounting plate and a vertical rod, one end of the mounting plate is fixedly connected with the bottom end of the rotating shaft, the other end of the mounting plate is fixedly connected with the vertical rod, a wave groove is formed in the lower surface of the mounting ring, a knocking rod is fixedly connected to the right side of the lower surface of the mounting plate, and the bottom end of the knocking rod penetrates through the collecting component and corresponds to the outer surface of the screening box.
Preferably, the top end of the vertical rod is fixedly connected with a U-shaped frame, and the inside of the U-shaped frame is rotatably connected with a roller through a pin shaft.
Preferably, rotating assembly includes second motor, gear and ring gear, the screening case passes through the bearing and is connected with the inner wall rotation of solid fixed cylinder, second motor fixed connection is at the top inner wall of solid fixed cylinder, gear fixed connection is at the output of second motor, ring gear fixed connection is on the surface right side of screening case, the gear is connected with the ring gear meshing.
Preferably, the left side and the right side of the screening box are respectively provided with a first through hole and a second through hole, the inner wall of the screening box is fixedly connected with a plurality of fixing plates, and the outer surface of the screening box is uniformly provided with a plurality of screening holes.
Preferably, the collecting assembly comprises a collecting hopper and a discharging pipe, the collecting hopper is fixedly connected with the inner wall of the grinding box, the collecting hopper is in a funnel shape, one end of the discharging pipe is fixedly connected with the collecting hopper, and the other end of the discharging pipe penetrates through the first through hole and is located in the screening box.
Preferably, the lifting assembly comprises a lifting pipe, a lifting motor and a helical blade, the lifting pipe is fixedly connected to the right side of the grinding box, the lifting motor is fixedly connected to the top end of the lifting pipe, the helical blade is arranged inside the lifting pipe and fixedly connected with the output end of the lifting motor, a material guide groove is formed in the upper surface of the material guide plate, the right end of the material guide plate penetrates through the second through hole and is located at the inner bottom of the lifting pipe, the material guide plate is fixedly connected with the grinding box, and the top end of the lifting pipe is communicated with the grinding box through a feed inlet.
(III) advantageous effects
Compared with the prior art, the invention provides a grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag, which has the following beneficial effects:
1. this grinder that old and useless lithium iron phosphate sediment preparation battery level ferric phosphate was used, can grind old and useless lithium iron phosphate sediment through rotatory grinding piece and the cooperation of fixed grinding piece, the granule after the grinding drops in the collecting hopper, get into the screening incasement from the discharging pipe afterwards, rotating assembly drives the screening case rotation this moment, the screening case grinds qualified material at rotatory in-process and drops the discharge gate from the screening hole, great granule passes through the fixed plate and drives in the baffle box on upper portion and roll-off the baffle, get into in the lifting pipe afterwards, then it is rotatory that hoisting motor drives helical blade, helical blade makes the material rise at rotatory in-process and grinds from the feed inlet reentrant grinding incasement, thereby realize the efficient circulation and grind, the grinding effect has been improved.
2. This grinder that old and useless lithium iron phosphate sediment preparation battery level ferric phosphate was used, regulating assembly about through setting up, the pivot can drive mounting panel and montant rotation at rotatory in-process, the montant can drive U-shaped frame and gyro wheel and roll along the wave groove of collar lower surface at rotatory in-process, drive the collar and upwards slide and extension spring along the slide bar when the lower surface of gyro wheel extrusion collar, the collar drives fixed grinding piece rebound simultaneously, when the gyro wheel is located the wave inslot, the restoring force of spring makes the collar drive fixed grinding piece and resets downwards, thereby can extrude when carrying out rotary grinding to old and useless lithium iron phosphate sediment, thereby improve the quality of grinding, and drive the striking pole striking screening case after the collar moves fixed grinding piece and resets downwards, thereby make the screening case shake, avoid the screening hole to appear blocking, better screening the ferric phosphate that grinds well.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 2 at B according to the present invention;
FIG. 5 is a schematic perspective view of a fixed abrasive segment according to the present invention;
FIG. 6 is a schematic perspective view of the screening box of the present invention;
fig. 7 is a schematic right-side sectional view of the screening box of the present invention.
In the figure: 1. grinding a box; 2. fixing the grinding block; 3. rotating the grinding block; 4. a feed hopper; 5. a discharge port; 6. a buffer assembly; 7. a first motor; 8. a rotating shaft; 9. an up-down adjustment assembly; 10. a fixed cylinder; 11. a rotating assembly; 12. screening the box; 13. a collection assembly; 14. a material guide plate; 15. a lifting assembly; 101. a fixing plate; 102. supporting legs; 103. a non-slip mat; 601. a mounting ring; 602. an upper fixing ring; 603. a lower fixing ring; 604. a slide bar; 605. a spring; 901. mounting a plate; 902. a vertical rod; 903. a wave groove; 904. a knock bar; 905. a U-shaped frame; 906. a roller; 1101. a second motor; 1102. a gear; 1103. a ring gear; 1201. a first through hole; 1202. a second through hole; 1203. a fixing plate; 1204. sieving holes; 1301. a collection hopper; 1302. a discharge pipe; 1501. a riser tube; 1502. a hoisting motor; 1503. a helical blade; 1504. a material guide chute; 1505. and (4) feeding a material inlet.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following will describe in detail a grinding apparatus and method for preparing battery grade iron phosphate from waste lithium iron phosphate slag according to the present invention with reference to the accompanying drawings.
Referring to fig. 1-7, the invention provides a grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag, which comprises a grinding box 1, a fixed grinding block 2 and a rotary grinding block 3, wherein the left side of the upper surface of the grinding box 1 is fixedly connected with a feed hopper 4, the lower surface of the grinding box 1 is fixedly connected with a discharge port 5, the fixed grinding block 2 is arranged on the inner wall of the grinding box 1 through a buffer assembly 6, the upper surface of the grinding box 1 is fixedly connected with a first motor 7, the output end of the first motor 7 is fixedly connected with a rotating shaft 8, the bottom end of the rotating shaft 8 is arranged inside the grinding box 1 and is provided with an up-down adjusting assembly 9, the rotary grinding block 3 is fixedly connected to the outer surface of the rotating shaft 8, the right side of the inner bottom of the grinding box 1 is fixedly connected with a fixed cylinder 10, the inside of the fixed cylinder 10 is provided with a screening box 12 through a rotating assembly 11, a collecting assembly 13 is arranged above the screening box 12, a guide plate 14 is arranged inside the screening box 12, the right end of the guide plate 14 is gradually inclined downwards, and the right end of the guide plate 14 is arranged outside the grinding box 1 and is provided with a lifting assembly 15;
specifically, the outer surface of the grinding box 1 is fixedly connected with a fixing plate 101, four corners of the lower surface of the fixing plate 101 are fixedly connected with supporting legs 102, and the bottom ends of the supporting legs 102 are fixedly connected with anti-slip pads 103, so that the supporting legs 102 are arranged to facilitate placement of the device, the anti-slip pads 103 increase friction force with the ground, and the device is prevented from sliding;
the buffer assembly 6 comprises a mounting ring 601, an upper fixing ring 602, a lower fixing ring 603, a sliding rod 604 and a spring 605, wherein the fixed grinding block 2 is fixedly connected to the inner wall of the mounting ring 601, the upper fixing ring 602 and the lower fixing ring 603 are respectively positioned at the upper side and the lower side of the mounting ring 601 and fixedly connected with the inner wall of the grinding box 1, one end of the sliding rod 604 is fixedly connected with the upper fixing ring 602, the other end of the sliding rod 604 penetrates through the mounting ring 601 and is fixedly connected with the lower fixing ring 603, the sliding rod 604 is slidably connected with the mounting ring 601, the spring 605 is sleeved on the outer surface of the sliding rod 604, one end of the spring 605 is fixedly connected with the lower fixing ring 603, and the other end of the spring 605 is fixedly connected with the mounting ring 601, so that when the roller 906 presses the lower surface of the mounting ring 601, the mounting ring 601 is driven to slide upwards along the sliding rod 604 and stretch the spring 605, meanwhile, the mounting ring 601 drives the fixed grinding block 2 to move upwards, and when the roller 906 is positioned in the wavy groove 903, the mounting ring 601 drives the fixed grinding block 2 to return downwards, thereby rotatably grinding waste lithium iron phosphate slag and simultaneously can be pressed;
the vertical adjusting assembly 9 comprises a mounting plate 901 and a vertical rod 902, one end of the mounting plate 901 is fixedly connected with the bottom end of the rotating shaft 8, the other end of the mounting plate 901 is fixedly connected with the vertical rod 902, a wavy groove 903 is formed in the lower surface of the mounting ring 601, a knocking rod 904 is fixedly connected to the right side of the lower surface of the mounting plate 901, the bottom end of the knocking rod 904 penetrates through the collecting assembly 13 and corresponds to the outer surface of the screening box 12, a U-shaped frame 905 is fixedly connected to the top end of the vertical rod 902, and a roller 906 is rotatably connected to the inside of the U-shaped frame 905 through a pin shaft, so that the mounting plate 901 and the vertical rod 902 can be driven to rotate by the rotating shaft 8 in the rotating process, and the U-shaped frame 905 and the roller 906 can be driven to roll along the wavy groove 903 in the lower surface of the mounting ring 601 by the vertical rod 902 in the rotating process;
further, the rotating assembly 11 comprises a second motor 1101, a gear 1102 and a gear ring 1103, the screening box 12 is rotatably connected with the inner wall of the fixed cylinder 10 through a bearing, the second motor 1101 is fixedly connected with the inner wall of the top end of the fixed cylinder 10, the gear 1102 is fixedly connected with the output end of the second motor 1101, the gear ring 1103 is fixedly connected to the right side of the outer surface of the screening box 12, the gear 1102 is in meshed connection with the gear ring 1103, the second motor 1101 is arranged to drive the gear 1102 to rotate, and the gear 1102 is matched with the gear ring 1103 in the rotating process to drive the screening box 12 to rotate;
furthermore, the left side and the right side of the screening box 12 are respectively provided with a first through hole 1201 and a second through hole 1202, the inner wall of the screening box 12 is fixedly connected with a plurality of fixing plates 1203, the outer surface of the screening box 12 is uniformly provided with a plurality of screening holes 1204, so that the materials ground and qualified in the rotating process of the screening box 12 fall to the discharge port 5 from the screening holes 1204, and larger particles are driven to the upper part through the fixing plates 1203 and fall onto the material guide plate 14;
further, the lifting assembly 15 includes a lifting pipe 1501, a lifting motor 1502 and a spiral blade 1503, the lifting pipe 1501 is fixedly connected to the right side of the grinding box 1, the lifting motor 1502 is fixedly connected to the top end of the lifting pipe 1501, the spiral blade 1503 is disposed inside the lifting pipe 1501 and fixedly connected to the output end of the lifting motor 1502, a material guide slot 1504 is disposed on the upper surface of the material guide plate 14, the right end of the material guide plate 14 penetrates through the second through hole 1202 and is located at the inner bottom of the lifting pipe 1501, the material guide plate 14 is fixedly connected to the grinding box 1, the top end of the lifting pipe 1501 is communicated with the grinding box 1 through a material inlet 1505, the lifting motor 1502 is configured to drive the spiral blade 1503 to rotate, and the spiral blade 1503 enables materials to ascend from the material inlet 1505 to reenter the grinding box 1 for grinding in the rotating process.
Referring to fig. 1 and 2, in order to enable ground materials to enter the screening box 12, the collecting assembly 13 comprises a collecting hopper 1301 and a discharging pipe 1302, the collecting hopper 1301 is fixedly connected with the inner wall of the grinding box 1, the collecting hopper 1301 is in a funnel shape, one end of the discharging pipe 1302 is fixedly connected with the collecting hopper 1301, the other end of the discharging pipe 1302 penetrates through the first through hole 1201 and is located in the screening box 12, and therefore ground particles are arranged to fall into the collecting hopper 1301 and then enter the screening box 12 from the discharging pipe 1302.
The working principle of the invention is as follows: when the waste lithium iron phosphate slag grinding device is used, waste lithium iron phosphate slag is poured into the grinding box 1 from the feeding hopper 4, the first motor 7 drives the rotating shaft 8 to rotate at the moment, the rotating shaft 8 can drive the rotating grinding block 3 to rotate in the rotating process, the rotating grinding block 3 can be matched with the fixed grinding block 2 to grind the waste lithium iron phosphate slag in the rotating process at the moment, the ground particles fall into the collecting hopper 1301, then the particles enter the screening box 12 from the discharging pipe 1302, the second motor 1101 drives the gear 1102 to rotate at the moment, the gear 1102 is matched with the gear ring 1103 in the rotating process to drive the screening box 12 to rotate, the materials ground and qualified in the rotating process of the screening box 12 fall into the discharging port 5 from the screening hole 1204, the larger particles are driven to the upper part through the fixing plate 1203 and roll into the guide chute on the guide plate 14, then enter the riser 1501, and then the lifting motor 1502 drives the spiral blade 1503 to rotate, the helical blade 1503 enables materials to ascend from the feeding hole 1505 to reenter the grinding box 1 for grinding in the rotating process, so that efficient circular grinding is realized, the grinding effect is improved, meanwhile, the rotating shaft 8 can drive the mounting plate 901 and the vertical rod 902 to rotate in the rotating process, the vertical rod 902 can drive the U-shaped frame 905 and the roller 906 to roll along the wave groove 903 on the lower surface of the mounting ring 601 in the rotating process, when the roller 906 presses the lower surface of the mounting ring 601, the mounting ring 601 is driven to slide upwards along the sliding rod 604 and stretch the spring 605, simultaneously, the mounting ring 601 drives the fixed grinding block 2 to move upwards, when the roller 906 is positioned in the wave groove 903, the restoring force of the spring 605 enables the mounting ring 601 to drive the fixed grinding block 2 to reset downwards, so that the waste lithium iron phosphate slag can be extruded while being subjected to rotary grinding, and the grinding quality is improved, and the mounting ring 601 drives the fixed grinding block 2 to reset downwards and then drives the knocking rod 904 to impact the screening box 12, so that the screening box 12 vibrates, the screening holes 1204 are prevented from being blocked, and the grinded iron phosphate is better screened.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a grinder that old and useless lithium iron phosphate sediment preparation battery level iron phosphate was used, includes grinding case (1), fixed grinding piece (2) and rotatory grinding piece (3), its characterized in that: the grinding machine is characterized in that a feed hopper (4) is fixedly connected to the left side of the upper surface of the grinding box (1), a discharge port (5) is fixedly connected to the lower surface of the grinding box (1), the fixed grinding block (2) is arranged on the inner wall of the grinding box (1) through a buffer component (6), a first motor (7) is fixedly connected to the upper surface of the grinding box (1), a rotating shaft (8) is fixedly connected to the output end of the first motor (7), the bottom end of the rotating shaft (8) is located inside the grinding box (1) and is provided with an upper and lower adjusting component (9), the grinding device is characterized in that the rotary grinding block (3) is fixedly connected to the outer surface of the rotating shaft (8), a fixed cylinder (10) is fixedly connected to the right side of the inner bottom of the grinding box (1), a screening box (12) is arranged inside the fixed cylinder (10) through a rotating assembly (11), a collecting assembly (13) is arranged above the screening box (12), a material guide plate (14) is arranged inside the screening box (12), the right end of the material guide plate (14) is inclined downwards gradually, and the right end of the material guide plate (14) is located outside the grinding box (1) and is provided with a lifting assembly (15).
2. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 1, characterized in that: the grinding box is characterized in that a fixing plate (101) is fixedly connected to the outer surface of the grinding box (1), supporting legs (102) are fixedly connected to four corners of the lower surface of the fixing plate (101), and anti-slip pads (103) are fixedly connected to the bottom ends of the supporting legs (102).
3. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 2, characterized in that: the buffer assembly (6) comprises a mounting ring (601), an upper fixing ring (602), a lower fixing ring (603), a sliding rod (604) and a spring (605), the fixed grinding block (2) is fixedly connected to the inner wall of the mounting ring (601), the upper fixing ring (602) and the lower fixing ring (603) are respectively located on the upper side and the lower side of the mounting ring (601) and fixedly connected with the inner wall of the grinding box (1), one end of the sliding rod (604) is fixedly connected with the upper fixing ring (602), the other end of the sliding rod (604) penetrates through the mounting ring (601) and is fixedly connected with the lower fixing ring (603), the sliding rod (604) is slidably connected with the mounting ring (601), the spring (605) is sleeved on the outer surface of the sliding rod (604), one end of the spring (605) is fixedly connected with the lower fixing ring (603), and the other end of the spring (605) is fixedly connected with the mounting ring (601).
4. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 3, characterized in that: the up-and-down adjusting assembly (9) comprises a mounting plate (901) and a vertical rod (902), one end of the mounting plate (901) is fixedly connected with the bottom end of the rotating shaft (8), the other end of the mounting plate (901) is fixedly connected with the vertical rod (902), a wave groove (903) is formed in the lower surface of the mounting ring (601), a knocking rod (904) is fixedly connected to the right side of the lower surface of the mounting plate (901), and the bottom end of the knocking rod (904) penetrates through the collecting assembly (13) and corresponds to the outer surface of the screening box (12).
5. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 4, characterized in that: the top end of the vertical rod (902) is fixedly connected with a U-shaped frame (905), and the inside of the U-shaped frame (905) is rotatably connected with a roller (906) through a pin shaft.
6. The grinding device for preparing battery grade iron phosphate from waste lithium iron phosphate slag according to claim 5, characterized in that: the rotating assembly (11) comprises a second motor (1101), a gear (1102) and a gear ring (1103), the screening box (12) is rotatably connected with the inner wall of the fixed cylinder (10) through a bearing, the second motor (1101) is fixedly connected to the inner wall of the top end of the fixed cylinder (10), the gear (1102) is fixedly connected to the output end of the second motor (1101), the gear ring (1103) is fixedly connected to the right side of the outer surface of the screening box (12), and the gear (1102) is meshed with the gear ring (1103).
7. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 6, characterized in that: the screening box is characterized in that a first through hole (1201) and a second through hole (1202) are respectively formed in the left side and the right side of the screening box (12), a plurality of fixing plates (1203) are fixedly connected to the inner wall of the screening box (12), and a plurality of screening holes (1204) are uniformly formed in the outer surface of the screening box (12).
8. The grinding device for preparing battery-grade iron phosphate from waste lithium iron phosphate slag according to claim 7, characterized in that: the collecting assembly (13) comprises a collecting hopper (1301) and a discharging pipe (1302), the collecting hopper (1301) is fixedly connected with the inner wall of the grinding box (1), the collecting hopper (1301) is in a funnel shape, one end of the discharging pipe (1302) is fixedly connected with the collecting hopper (1301), and the other end of the discharging pipe (1302) penetrates through the first through hole (1201) and is located in the screening box (12).
9. The grinding device for preparing battery grade iron phosphate from waste lithium iron phosphate slag according to claim 8, characterized in that: the lifting assembly (15) comprises a lifting pipe (1501), a lifting motor (1502) and a spiral blade (1503), the lifting pipe (1501) is fixedly connected to the right side of the grinding box (1), the lifting motor (1502) is fixedly connected to the top end of the lifting pipe (1501), the spiral blade (1503) is arranged inside the lifting pipe (1501) and fixedly connected with the output end of the lifting motor (1502), a material guide groove (1504) is formed in the upper surface of the material guide plate (14), the right end of the material guide plate (14) penetrates through the second through hole (1202) and is located at the inner bottom of the lifting pipe (1501), the material guide plate (14) is fixedly connected with the grinding box (1), and the top end of the lifting pipe (1501) is communicated with the grinding box (1) through a material inlet (1505).
10. A grinding method of a grinding device for preparing battery grade iron phosphate from waste lithium iron phosphate slag is characterized by comprising the following steps:
when the waste lithium iron phosphate slag grinding device is used, waste lithium iron phosphate slag is poured into the grinding box (1) from the feeding hopper (4) of the grinding device, the first motor (7) drives the rotating shaft (8) to rotate at the moment, the rotating shaft (8) can drive the rotating grinding block (3) to rotate in the rotating process, the rotating grinding block (3) is matched with the fixed grinding block (2) in the rotating process to grind the waste lithium iron phosphate slag, and ground particles fall into the collecting hopper (1301);
then the materials enter the screening box (12) from the discharging pipe (1302), at the moment, the second motor (1101) drives the gear (1102) to rotate, the gear (1102) is matched with the gear ring (1103) in the rotating process to drive the screening box (12) to rotate, the materials ground and qualified in the rotating process of the screening box (12) fall to the discharging port (5) from the screening hole (1204), and the larger particles are driven to the upper part through the fixing plate (1203) and roll into the material guide groove (1504) on the material guide plate (14), and then enter the lifting pipe (1501);
then the lifting motor (1502) drives the spiral blade (1503) to rotate, the spiral blade (1503) enables materials to ascend from the feeding hole (1505) to reenter the grinding box (1) for grinding in the rotating process, so that efficient circular grinding is achieved, the grinding effect is improved, and meanwhile the mounting plate (901) and the vertical rod (902) can be driven to rotate by the rotating shaft (8) in the rotating process;
the vertical rod (902) can drive the U-shaped frame (905) and the roller (906) to roll along the wave groove (903) on the lower surface of the mounting ring (601) in the rotating process, when the roller (906) extrudes the lower surface of the mounting ring (601), the mounting ring (601) is driven to slide upwards along the sliding rod 604 and stretch the spring (605), meanwhile, the mounting ring (601) drives the fixed grinding block (2) to move upwards, when the roller (906) is located in the wave groove (903), the restoring force of the spring (605) enables the mounting ring (601) to drive the fixed grinding block (2) to reset downwards, so that the waste lithium iron phosphate slag can be extruded when being subjected to rotary grinding, the grinding quality is improved, and after the mounting ring (601) drives the fixed grinding block (2) to reset downwards, the knocking rod (904) is driven to impact the screening box (12), so that the screening box (12) is subjected to vibration and blockage is avoided, and the grinded iron phosphate can be better screened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502995.2A CN115805121A (en) | 2022-11-28 | 2022-11-28 | Grinding device and method for preparing battery-grade iron phosphate from waste lithium iron phosphate slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211502995.2A CN115805121A (en) | 2022-11-28 | 2022-11-28 | Grinding device and method for preparing battery-grade iron phosphate from waste lithium iron phosphate slag |
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| Publication Number | Publication Date |
|---|---|
| CN115805121A true CN115805121A (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211502995.2A Withdrawn CN115805121A (en) | 2022-11-28 | 2022-11-28 | Grinding device and method for preparing battery-grade iron phosphate from waste lithium iron phosphate slag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117065899A (en) * | 2023-09-05 | 2023-11-17 | 江苏圣天新材料有限公司 | Multistage grinder for producing silicon micropowder |
-
2022
- 2022-11-28 CN CN202211502995.2A patent/CN115805121A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117065899A (en) * | 2023-09-05 | 2023-11-17 | 江苏圣天新材料有限公司 | Multistage grinder for producing silicon micropowder |
| CN117065899B (en) * | 2023-09-05 | 2024-02-13 | 江苏圣天新材料有限公司 | Multistage grinder for producing silicon micropowder |
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Application publication date: 20230317 |