Equipment for extracting rare earth from neodymium iron boron waste

Abstract

The utility model relates to the technical field of recovery processing, in particular to extraction equipment for rare earth in neodymium iron boron waste materials, which comprises a rack, the rack comprises a bottom frame, a stirring cavity, a crushing cavity, a conveying cavity, a coarse crushing cavity, a feeding cavity, a finished product tank, a vacuum pump, a negative pressure valve and an extraction cavity, the finished product tank, the extraction cavity, the stirring cavity, the crushing cavity, the conveying cavity, the coarse crushing cavity and the feeding cavity are fixed in the rack from bottom to top, the finished product tank is fixed below the bottom frame, the stirring cavity is fixed above the bottom frame, and the crushing cavity is fixed above the stirring cavity; residual materials at the top end of the filter screen are conveyed into the coarse crushing cavity from bottom to top along the conveying channel by the auger and are extruded and crushed by the crushing rollers, the materials fall into the crushing cavity from the middle of the crushing rollers on the two sides, and the process is repeated for many times, so that the crushing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycling technology, specifically to a rare earth extraction device for neodymium iron boron waste. Background Technology

[0002] Waste recycling of NdFeB materials is generally divided into two directions: one is to separate and extract various elements, especially rare earth elements, from NdFeB waste to prepare oxides or other compounds with a certain purity, which can be used as raw materials in different fields; the other is to use waste to prepare NdFeB magnets or other products with certain functions, such as preparing recycled sintered magnets, microwave absorbing materials, etc.

[0003] Rare earth waste recycling typically involves multiple steps, including roasting, acid dissolution, filtration, and extraction. This invention can crush rare earth elements, allowing for faster dissolution in the extractant during subsequent extraction. Simultaneously, a motor drives a rotating rod and stirring blades to rotate together, further accelerating the dissolution of rare earth elements. The stirring blades have through holes on one side of their outer wall to enhance stirring efficiency. However, the single-stage crushing process results in low efficiency, necessitating further crushing of the remaining rare earth elements after sieving to improve waste recycling efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rare earth extraction device for neodymium iron boron waste, which has the following advantages.

[0005] To achieve the above-mentioned functional objectives, this utility model provides the following technical solution: a rare earth extraction device for NdFeB waste, comprising a frame, characterized in that: the frame includes a base frame, a stirring chamber, a crushing chamber, a conveying chamber, a coarse crushing chamber, a feeding chamber, a finished product tank, a vacuum pump, a negative pressure valve, and an extraction chamber; the base frame is fixed to the bottom end of the frame; the finished product tank, extraction chamber, stirring chamber, crushing chamber, conveying chamber, coarse crushing chamber, and feeding chamber are fixed inside the frame from bottom to top; the finished product tank is fixed below the base frame; the stirring chamber is fixed above the base frame; the crushing chamber is fixed above the stirring chamber; the conveying chamber is fixed at both ends of the crushing chamber; the coarse crushing chamber is fixed at the top of the conveying chamber; the feeding chamber is fixed at the top of the coarse crushing chamber; and the vacuum pump and negative pressure valve are fixed to the side of the extraction chamber.

[0006] Furthermore, the crushing chamber includes a stirring blade, a conveying rod, a motor, a fixing rod, and a filter screen. The stirring blade is fixed to the side wall of the stirring chamber, the motor is fixed to the side of the fixing rod, the conveying rod is connected to the conveying end of the motor, the stirring blade is connected to the annular side of the conveying rod, and the filter screen is fixed to the bottom of the crushing chamber.

[0007] Furthermore, the mixing chamber includes a mixing rod and a collecting chamber. The mixing rod is fixed to the annular side of the conveying rod, and the collecting chamber is fixed to the bottom end of the mixing chamber. An electric valve is fixed to the bottom end of the collecting chamber.

[0008] Furthermore, the conveying chamber includes a conveyor, an auger, a straight disc wheel, a swashplate wheel, and a side motor. The conveyor is fixed to the side of the crushing chamber. The auger is located inside the annular conveyor. The straight disc wheel is connected to the top of the auger. The swashplate wheel meshes with the side of the straight disc wheel. The side motor is connected to the bottom of the swashplate wheel. Both the straight disc wheel and the swashplate wheel are gears.

[0009] Furthermore, the coarse crushing chamber includes crushing rollers, side gears, and a third motor. There are two crushing rollers, and both crushing rollers are connected to the inner side of the coarse crushing chamber. The side gears are connected to one side of the coarse crushing chamber, and the third motors are connected to one side of the side gears.

[0010] Furthermore, a feed inlet is fixed at the bottom of the feeding chamber, heating wires are connected to the sides of the stirring rods, an extract inlet is fixed to the side of the stirring chamber, a discharge pipe is fixed at the bottom of the finished product tank, and a valve is connected to the bottom of the discharge pipe.

[0011] Compared with the prior art, the advantages of this utility model are as follows: the residual material at the top of the filter screen is driven by the side motor to rotate the inclined disc wheel, which in turn drives the straight disc wheel to rotate, so that the auger transports the material from bottom to top along the conveyor to the coarse crushing chamber. The material is squeezed and crushed by the crushing rollers, and the material falls from the middle of the crushing rollers on both sides into the crushing chamber. This process is repeated multiple times to improve the crushing efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of a rare earth extraction device for neodymium iron boron waste according to the present invention.

[0013] Figure 2 This is a partial three-dimensional structural schematic diagram of a rare earth extraction device for neodymium iron boron waste according to the present invention.

[0014] Figure 3 This is a partially disassembled three-dimensional structural diagram of a rare earth extraction device for neodymium iron boron waste according to this utility model.

[0015] Figure 4 This is a schematic diagram of the internal structure of a rare earth extraction device for neodymium iron boron waste according to this utility model.

[0016] Figure 5 This is a front structural schematic diagram of a rare earth extraction device for neodymium iron boron waste according to the present invention.

[0017] The attached diagram is labeled as follows: 1. Frame; 2. Base frame; 3. Mixing chamber; 4. Crushing chamber; 5. Conveying chamber; 6. Coarse crushing chamber; 7. Feeding chamber; 8. Finished product tank; 9. Vacuum pump; 10. Negative pressure valve; 11. Extraction chamber; 41. Stirring blade; 42. Conveying rod; 43. Motor; 44. Fixing rod; 45. Filter screen; 31. Stirring rod; 32. Collection chamber; 51. Conveying channel; 52. Screwdriver; 53. Straight disc wheel; 54. Inclined disc wheel; 55. Side motor; 61. Crushing roller; 62. Side gear; 63. Third motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. For embodiments, please refer to... Figure 1-5 A rare earth extraction device for neodymium iron boron waste, comprising a frame 1, characterized in that: the frame 1 includes a base frame 2, a stirring chamber 3, a crushing chamber 4, a conveying chamber 5, a coarse crushing chamber 6, a feeding chamber 7, a finished product tank 8, a vacuum pump 9, a negative pressure valve 10, and an extraction chamber 11; the base frame 2 is fixed to the bottom end of the frame 1; the finished product tank 8, extraction chamber 11, stirring chamber 3, crushing chamber 4, conveying chamber 5, coarse crushing chamber 6, and feeding chamber 7 are fixed inside the frame 1 from bottom to top; the finished product tank 8 is fixed below the base frame 2; the stirring chamber 3 is fixed above the base frame 2; the crushing chamber 4 is fixed above the stirring chamber 3; the conveying chamber 5 is fixed at both ends of the crushing chamber 4; the coarse crushing chamber 6 is fixed at the top of the conveying chamber 5; the feeding chamber 7 is fixed at the top of the coarse crushing chamber 6; and the vacuum pump 9 and negative pressure valve 10 are fixed to the side of the extraction chamber 11.

[0019] The crushing chamber 4 includes a stirring blade 41, a conveying rod 42, a motor 43, a fixing rod 44, and a filter screen 45. The stirring blade 41 is fixed to the side wall of the mixing chamber 3. The motor 43 is fixed to the side of the fixing rod 44. The conveying rod 42 is connected to the conveying end of the motor 43. The stirring blade 41 is connected to the annular side of the conveying rod 42. The filter screen 45 is fixed to the bottom of the crushing chamber 4.

[0020] The mixing chamber 3 includes a mixing rod 31 and a collecting chamber 32. The mixing rod 31 is fixed to the annular side of the conveying rod 42, and the collecting chamber 32 is fixed to the bottom end of the mixing chamber 3. An electric valve 33 is fixed to the bottom end of the collecting chamber 32.

[0021] The conveying chamber 5 includes a conveyor 51, an auger 52, a straight disc wheel 53, a swashplate wheel 54, and a side motor 55. The conveyor 51 is fixed to the side of the crushing chamber 4. The auger 52 is located on the inner side of the conveyor 51. The straight disc wheel 53 is connected to the top of the auger 52. The swashplate wheel 54 is engaged with the side of the straight disc wheel 53. The side motor 55 is connected to the bottom of the swashplate wheel 54. Both the straight disc wheel 53 and the swashplate wheel 54 are gears.

[0022] The coarse crushing chamber 6 includes crushing rollers 61, side gears 62, and a third motor 63. There are two crushing rollers 61, and both crushing rollers 61 are connected to the inner side of the coarse crushing chamber 6. The side gears 62 are connected to one side of the coarse crushing chamber 6, and the third motor 63 is connected to one side of the side gears 62.

[0023] The bottom of the feeding chamber 7 is fixed with a feed inlet, the side of the stirring rod 31 is connected with a heating wire, the side of the stirring chamber 3 is fixed with an extract inlet, the bottom of the finished product tank 8 is fixed with a discharge pipe 12, and the bottom of the discharge pipe 12 is connected with a valve.

[0024] Waste material is poured into the feed chamber 7 and enters the coarse crushing chamber 6 through the feed inlet. The third motor 63 is started to drive the side gear 62 to rotate, thereby driving the crushing rollers 61 on both sides to squeeze and crush the material. The material falls from the middle of the crushing rollers 61 into the crushing chamber 4. The motor 43 is started to drive the conveyor rod 42 to rotate, thereby driving the stirring blade 41 to rotate. The stirring blade 41 further crushes the material. The material is filtered through the filter screen 45.

[0025] The concentration of the product is increased by filtration through the filter plate. The material falls into the stirring chamber 3 and then the extract liquid is sent to the arc-shaped bottom of the stirring chamber 3 through the extract liquid inlet for extraction reaction. The transmission rod drives the stirring rod to rotate, the heating wire heats up, and then the electric valve is opened, so that the extracted product falls into the bottom of the inner cavity of the extraction chamber 11, which is the finished product tank 8. At this time, the micro vacuum pump and negative pressure valve are turned on to evacuate the inside of the extraction chamber 11 and increase the pressure inside the chamber. Finally, the valve at the bottom of the discharge pipe 12 is opened. Due to the change in pressure inside the extraction chamber 11, the finished liquid is discharged into the finished product tank 8 through the discharge pipe 12 at an accelerated rate, which improves production efficiency and effectively increases product concentration.

[0026] Working principle: Waste material is poured into the feed chamber 7 and enters the coarse crushing chamber 6 through the feed inlet. The third motor 63 is started to drive the side gear 62 to rotate, thereby driving the crushing rollers 61 on both sides to squeeze and crush the material. The material falls from the middle of the crushing rollers 61 into the crushing chamber 4. The motor 43 is started to drive the conveyor rod 42 to rotate, thereby driving the stirring blade 41 to rotate. The stirring blade 41 further crushes the material. The material is filtered through the filter screen 45.

[0027] The residual material at the top of the filter screen is driven by the side motor 55 to rotate the inclined wheel 54, which in turn drives the straight wheel 53 to rotate, so that the auger 52 conveys the material from bottom to top along the conveyor 51 into the coarse crushing chamber 6. The material is squeezed and crushed by the crushing roller 61, and the material falls from the middle of the crushing rollers 61 on both sides into the crushing chamber 4. This process is repeated multiple times to improve the crushing efficiency.

[0028] The concentration of the product is increased by filtration through the filter plate. The material falls into the stirring chamber 3 and then the extract liquid is sent to the arc-shaped bottom of the stirring chamber 3 through the extract liquid inlet for extraction reaction. The transmission rod drives the stirring rod to rotate, the heating wire heats up, and then the electric valve is opened, so that the extracted product falls into the bottom of the inner cavity of the extraction chamber 11, which is the finished product tank 8. At this time, the micro vacuum pump and negative pressure valve are turned on to evacuate the inside of the extraction chamber 11 and increase the pressure inside the chamber. Finally, the valve at the bottom of the discharge pipe 12 is opened. Due to the change in pressure inside the extraction chamber 11, the finished liquid is discharged into the finished product tank 8 through the discharge pipe 12 at an accelerated rate, which improves production efficiency and effectively increases product concentration.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rare earth extraction plant for neodymium iron boron scrap material, a frame (1), characterized in that: The rack (1) includes a chassis (2), a stirring cavity (3), a crushing cavity (4), a conveying cavity (5), a coarse crushing cavity (6), a feeding cavity (7), a finished product tank (8), a vacuum pump (9), a negative pressure valve (10), an extraction cavity (11), the chassis (2) is fixed to the bottom end of the rack (1), the finished product tank (8), the extraction cavity (11), the stirring cavity (3), the crushing cavity (4), the conveying cavity (5), the coarse crushing cavity (6) and the feeding cavity (7) are fixed in the rack (1) from bottom to top, the finished product tank (8) is fixed below the chassis (2), the stirring cavity (3) is fixed above the chassis (2), the crushing cavity (4) is fixed above the stirring cavity (3), the conveying cavity (5) is fixed at both ends of the crushing cavity (4), the coarse crushing cavity (6) is fixed at the top end of the conveying cavity (5), the feeding cavity (7) is fixed at the top end of the coarse crushing cavity (6), the vacuum pump (9) and the negative pressure valve (10) are fixed to the side of the extraction cavity (11).

2. The equipment for extracting rare earth in neodymium iron boron waste according to claim 1, characterized in that: The crushing cavity (4) includes a stirring blade (41), a conveying rod (42), a motor (43), a fixed rod (44) and a filter screen (45), the stirring blade (41) is fixed to the side wall of the stirring cavity (3), the motor (43) is fixed to the side of the fixed rod (44), the conveying rod (42) is connected to the conveying end of the motor (43), the stirring blade (41) is connected to the annular side of the conveying rod (42), and the filter screen (45) is fixed to the bottom end of the crushing cavity (4).

3. The equipment for extracting rare earth in neodymium iron boron waste according to claim 1, characterized in that: The stirring cavity (3) includes a stirring rod (31) and a material collecting cavity (32), the stirring rod (31) is fixed to the annular side of the conveying rod (42), the material collecting cavity (32) is fixed to the bottom end of the stirring cavity (3), and an electric valve (33) is fixed to the bottom end of the material collecting cavity (32).

4. The equipment for extracting rare earth in Nd-Fe-B waste material according to claim 1, characterized in that: The conveying cavity (5) includes a conveying channel (51), an auger (52), a straight disk wheel (53), an inclined disk wheel (54) and a side motor (55), the conveying channel (51) is fixed to the side of the crushing cavity (4), the auger (52) is located on the annular inner side of the conveying channel (51), the straight disk wheel (53) is connected to the top end of the auger (52), the inclined disk wheel (54) is engaged with the side of the straight disk wheel (53), and the side motor (55) is connected to the bottom end of the inclined disk wheel (54), and the straight disk wheel (53) and the inclined disk wheel (54) are all gear wheels.

5. The equipment for extracting rare earth in neodymium iron boron waste according to claim 1, characterized in that: The coarse crushing cavity (6) includes a crushing roller (61), a side gear (62) and a third motor (63), the crushing roller (61) is provided with two, and the crushing roller (61) is connected to the inner side of the coarse crushing cavity (6), the side gear (62) is connected to one side of the coarse crushing cavity (6), and the third motor (63) is connected to one side of the side gear (62).

6. The equipment for extracting rare earth in Nd-Fe-B waste material according to claim 3, characterized in that: A feeding port is fixed to the bottom end of the feeding cavity (7), heating wires are connected to the sides of the stirring rod (31), an extraction liquid inlet is fixed to the side of the stirring cavity (3), a discharge pipe (12) is fixed to the bottom of the finished product tank (8), and a valve is connected to the bottom end of the discharge pipe (12).

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