Recovery device for recovering rare earth metal from rare earth metal slag

Abstract

The invention belongs to the technical field of rare earth metal recovery, and particularly relates to a recovery device for recovering rare earth metal from rare earth metal slag, the recovery device comprises a crushing mechanism and an electrolysis mechanism, a uniform calcination mechanism is connected between the crushing mechanism and the electrolysis mechanism, and the uniform calcination mechanism comprises an inner chamber, an outer chamber, a power assembly, a uniform assembly and a plurality of heating assemblies; the inner chamber is arranged in the outer chamber, the power assembly is arranged in the inner chamber and is rotatably connected with the crushing mechanism, the homogenizing assembly is rotatably connected to the lower end of the power assembly, and the multiple groups of heating assemblies are vertically and annularly arranged on the side wall of the outer chamber at intervals. The rare earth metal powder in the inner cavity can be uniformly stirred better and more efficiently through the uniform assembly arranged in the uniform calcining mechanism, and the rare earth metal powder is uniformly heated through the heating assembly annularly arranged on the side wall of the outer cavity; the heating and calcining efficiency of the rare earth metal powder is improved, the subsequent influence on the electrolysis effect is reduced, and the recovery efficiency of the rare earth metal slag is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rare earth metal recovery, and in particular relates to a recovery device for recovering rare earth metals from rare earth metal slag. Background Art

[0002] Rare earth elements play a vital role in modern industry due to their unique physical and chemical properties. They are widely used in new energy, new materials, energy conservation and environmental protection, aerospace, electronic information and other fields, and are indispensable elements in modern industry. For example, rare earth elements play an irreplaceable role in the manufacture of high-performance permanent magnetic materials, catalysts, fluorescent materials, laser materials, etc.

[0003] The preparation process of rare earth elements generally includes the following steps: ore processing, chemical treatment, separation and purification, metallization, post-processing, etc. The metal elements in rare earths are usually extracted by metal thermal reduction or salt electrolysis. After extraction, some rare earth elements will exist in the form of rare earth oxides or rare earth molten salt electrolytic slag. If the rare earth elements in rare earth oxides or rare earth molten salt electrolytic slag are not further extracted and recovered, it will cause serious waste of rare earth elements, unreasonable use of resources will lead to excessive cost expenditure, and may cause pollution problems in environmental governance.

[0004] Calcination is an important part of the recovery process of rare earth metal slag. The pre-stage is to grind the rare earth metal slag into powder. In the prior art, the rare earth metal powder cannot be properly heated during the calcination process, which affects the electrolysis effect of the subsequent electrolysis process and ultimately affects the recovery efficiency of the rare earth metal slag. Therefore, based on the above defects, the applicant has proposed a better technical solution to solve the above technical problems.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The present invention aims to solve the above-mentioned technical problems and provides a recovery device for recovering rare earth metals from rare earth metal slag, which mainly solves the technical problem that the rare earth metal powder cannot be properly treated during the calcination process in the prior art, thereby affecting the electrolysis effect of the subsequent electrolysis process and ultimately affecting the recovery efficiency of the rare earth metal slag.

[0007] To achieve the above object, the technical solution of the present invention is:

[0008] A recovery device for recovering rare earth metals from rare earth metal slag comprises a crushing mechanism and an electrolysis mechanism, wherein a uniform calcination mechanism is connected between the crushing mechanism and the electrolysis mechanism.

[0009] The uniform calcining mechanism comprises an inner chamber, an outer chamber, a power component, a uniform component and a plurality of heating components, wherein the inner chamber is disposed inside the outer chamber.

[0010] The power assembly is disposed in the inner chamber and is rotatably connected to the pulverizing mechanism.

[0011] The uniform component is rotatably connected to the lower end of the power component.

[0012] A plurality of groups of vertical spacer rings of the heating assembly are arranged on the side wall of the outer chamber,

[0013] A feed pipe is connected between the inner chamber and the pulverizing mechanism, and a first valve body is provided on the feed pipe. A discharge pipe is connected between the inner chamber and the electrolysis mechanism, and a second valve body is provided on the discharge pipe.

[0014] Preferably, the power assembly comprises a transmission member and a rotating member, the rotating member is arranged in the inner chamber, and the transmission member is connected between the pulverizing motor of the pulverizing mechanism and the rotating member.

[0015] Preferably, the rotating member includes a driving shaft group and a driven shaft group, the driving shaft group includes a driving shaft member and a first gear, the driving shaft member is vertically rotatably connected to the upper end of the outer chamber, and its end extends into the inner chamber and is provided with the first gear,

[0016] The driven shaft assembly includes a driven shaft, a second gear and a bracket, wherein the bracket is disposed in the inner chamber, the driven shaft is rotatably connected to the bracket, the bracket is provided with the second gear on the driven shaft, and the second gear is meshed and connected with the first gear.

[0017] The lower end of the driven shaft is rotatably connected to the uniform component.

[0018] Preferably, the transmission member comprises a driving gear, a transmission belt and a driven gear, the driving gear is arranged at the output end of the pulverizing motor, the driven gear is arranged on the driving shaft, and the transmission belt is connected between the driving gear and the driven gear.

[0019] Preferably, the uniformizing component includes a planetary part and a stirring part, and the planetary part includes a sun gear, a planetary gear and a ring gear. The sun gear is arranged at the lower end of the driven shaft, and the ring gear is arranged at the lower end of the bracket. The planetary gear is meshingly connected between the ring gear and the sun gear, and the stirring part is arranged in the planetary gear.

[0020] Preferably, the stirring member comprises a stirring shaft and a plurality of stirring blades, the stirring shaft is arranged in the planetary gear, and a plurality of stirring blade spacer rings are arranged on the stirring shaft.

[0021] Preferably, a discharge chute is provided on the stirring blade.

[0022] Preferably, the heating component includes a heating motor, a heating shaft, a connecting piece and a plurality of nickel-chromium alloy heat-conducting columns. The heating motor is arranged on the outer wall of the outer chamber, and its output end is connected to the heating shaft. The heating shaft is rotatably connected to the inner wall of the outer chamber. The two ends of the heating shaft are respectively connected to a connecting piece, and a plurality of nickel-chromium alloy heat-conducting columns are connected between the two connecting pieces.

[0023] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] The present invention provides a recovery device for recovering rare earth metals from rare earth metal slag, which has a simple structure and is easy to use. A power component is connected between a crushing mechanism and a uniform calcining mechanism, which reduces the connection relationship between the complex instruments of the device and simplifies the structural design of the entire device, and reduces the assembly and use intensity of the device. The uniform component arranged in the uniform calcining mechanism can better and more efficiently stir the rare earth metal powder in the inner chamber, and use the heating component arranged on the side wall of the outer chamber to uniformly heat the rare earth metal powder, thereby improving the heating and calcining efficiency of the rare earth metal powder and reducing the subsequent influence on its electrolysis effect, thereby improving the recovery efficiency of the rare earth metal slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 A magnified cross-sectional view of point A;

[0027] Figure 3 for Figure 1 Enlarged cross-sectional view at point B.

[0028] The main component symbols in the figure are explained as follows:

[0029] 1. Crushing mechanism; 11. Crushing motor; 2. Electrolysis mechanism; 3. Uniform calcination mechanism; 31. Inner chamber; 32. Outer chamber; 33. Power assembly; 331. Transmission member; 3311. Driving gear; 3312. Transmission belt; 3313. Driven gear; 332. Rotating member; 34. Uniform assembly; 341. Planetary member; 3411. Sun gear; 3412. Planetary gear; 3413. Ring gear; 342. Stirring member; 3421. Stirring Shaft; 3422, stirring blade; 35, heating component; 351, heating motor; 352, heating shaft; 353, connecting piece; 354, nickel-chromium alloy heat-conducting column; 4, feed pipe; 41, first valve body; 5, discharge pipe; 51, second valve body; 100, driving shaft group; 101, driving shaft member; 102, first gear; 200, driven shaft group; 201, driven shaft member; 202, second gear; 203, bracket; 300, discharge chute. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example

[0032] like Figures 1 to 3 As shown, a recovery device for recovering rare earth metals from rare earth metal slag comprises a pulverizing mechanism 1 and an electrolytic mechanism 2, wherein a uniform calcining mechanism 3 is connected between the pulverizing mechanism 1 and the electrolytic mechanism 2, wherein the uniform calcining mechanism 3 comprises an inner chamber 31, an outer chamber 32, a power assembly 33, a uniform assembly 34 and a plurality of heating assemblies 35, wherein the inner chamber 31 is built in the outer chamber 32, the power assembly 33 is arranged in the inner chamber 31 and is rotatably connected to the pulverizing mechanism 1, the uniform assembly 34 is rotatably connected to the lower end of the power assembly 33, and the plurality of heating assemblies 35 are vertically spaced on the side wall of the outer chamber 32, a feed pipe 4 is connected between the inner chamber 31 and the pulverizing mechanism 1, and a first valve body 41 is provided on the feed pipe 4, and a discharge pipe 5 is connected between the inner chamber 31 and the electrolytic mechanism 2, and a second valve body 51 is provided on the discharge pipe 5.

[0033] The present invention utilizes a power component 33 connected between the pulverizing mechanism 1 and the uniform calcining mechanism 3, reduces the connection relationship between the complex instruments of the device, simplifies the structural design of the entire device, and reduces the assembly and use intensity of the device; and the uniform component 34 arranged in the uniform calcining mechanism 3 can better and more efficiently stir the rare earth metal powder in the inner chamber 31, and use the heating component 35 arranged on the side wall of the outer chamber 32 to uniformly heat the rare earth metal powder, thereby improving the heating and calcining efficiency of the rare earth metal powder and reducing the subsequent impact on its electrolysis effect, thereby improving the recovery efficiency of rare earth metal slag.

[0034] In this embodiment, the power assembly 33 includes a transmission member 331 and a rotating member 332. The rotating member 332 is arranged in the inner chamber 31, and the transmission member 331 is connected between the crushing motor 11 of the crushing mechanism 1 and the rotating member 332. The overall structural design uses the crushing motor 11 as a power source, which can drive the crushing mechanism 1 and the rotating member 332 to operate at the same time, thereby optimizing the structural design, reducing the complex connection relationship between components, and facilitating the maintenance of the entire device.

[0035] For details, please refer to Figure 2 The rotating member 332 includes a driving shaft group 100 and a driven shaft group 200. The driving shaft group 100 includes a driving shaft 101 and a first gear 102. The driving shaft 101 is vertically rotatably connected to the upper end of the outer chamber 32, and its end extends into the inner chamber 31 and is provided with a first gear 102. The driven shaft group 200 includes a driven shaft 201, a second gear 202 and a bracket 203. The bracket 203 is arranged in the inner chamber 31. The driven shaft 201 is rotatably connected to the bracket 203. The bracket 203 is provided with a second gear 202 on the driven shaft 201. The second gear 202 is meshed with the first gear 102. The lower end of the driven shaft 201 is rotatably connected to the uniform component 34.

[0036] The transmission member 331 includes a driving gear 3311, a transmission belt 3312 and a driven gear 3313. The driving gear 3311 is arranged at the output end of the pulverizing motor 11, and the driven gear 3313 is arranged on the driving shaft member 101. The driving gear 3311 and the driven gear 331 are connected by a transmission belt 3312. It can be seen from the above that the driving shaft group 100 is between the transmission member 331 and the driven shaft group 200, and provides power flow for the driven shaft group 200, that is, starting from the rotation of the pulverizing motor 11, through the connection relationship between the transmission member 331, the driving shaft group 100 and the driven shaft group 200, it can finally drive the rotation of the uniform component 34, and the uniform component 34 plays a role in uniformly stirring the rare earth metal powder.

[0037] In this embodiment, the uniform component 34 includes a planetary part 341 and a stirring part 342. The planetary part 341 includes a sun gear 3411, a planetary gear 3412 and a ring gear 3413. The sun gear 3411 is arranged at the lower end of the driven shaft 201, and the ring gear 3413 is arranged at the lower end of the bracket 203. The planetary gear 3412 is meshed and connected between the ring gear 3413 and the sun gear 3411, and the stirring part 342 is arranged in the planetary gear 3412; the planetary part 341 borrows the working principle of the planetary gear, and the stirring part 342 is driven by the power to rotate and revolve, thereby better multi-region and multi-directionally presenting a large range of uniform stirring of the rare earth metal powder in the inner chamber 31, and under the uniform heating and calcination of the heating component 35, the heating and calcination efficiency of the rare earth metal powder is improved and the subsequent impact on its electrolysis effect is reduced, thereby improving the recovery efficiency of the rare earth metal slag.

[0038] For details, please refer to Figure 1 The stirring member 342 includes a stirring shaft 3421 and a plurality of stirring blades 3422. The stirring shaft 3421 is arranged in the planetary gear 3412, and the plurality of stirring blades 3422 are arranged on the stirring shaft 3421 with spacer rings. The stirring blade 3422 structure is in the shape of a rectangular sheet, and the presentation form of the stirring blade 3422 structure can be selected according to the bottom shape of the inner chamber 31. A discharge trough 300 is provided on the stirring blade 3422. The setting of the discharge trough 300 can better stir the rare earth metal powder.

[0039] In this embodiment, please refer to Figure 3 The heating assembly 35 includes a heating motor 351, a heating shaft 352, a connecting piece 353 and a plurality of nickel-chromium alloy heat-conducting columns 354. The heating motor 351 is arranged on the outer wall of the outer chamber 32, and its output end is connected to the heating shaft 352. The heating shaft 352 is rotatably connected to the inner wall of the outer chamber 32. The two ends of the heating shaft 352 are respectively connected to a connecting piece 353, and a plurality of nickel-chromium alloy heat-conducting columns 354 are connected between the two connecting pieces 353. When in use, the heating motor 35 The rotation of the connecting piece 353 drives the connecting piece 353 to rotate, thereby driving the nickel-chromium alloy heat-conducting column 354, so that the heat flow generated by the nickel-chromium alloy heat-conducting column 354 is in a columnar flow state, that is, the rotation of a single heating component 35 can form a columnar heat source and continuously emit it to the surrounding area. With the assistance of the operation of multiple heating components 35, the rare earth metal powder can be uniformly heated and calcined in an all-round and large range, and finally the heating and calcining efficiency of the rare earth metal powder is improved to reduce the subsequent impact on its electrolysis effect, and the recovery efficiency of the rare earth metal slag is improved.

[0040] Working principle of the present invention:

[0041] The present invention provides a recovery device for recovering rare earth metals from rare earth metal slag. When in use, the rare earth metal slag is first crushed into a powder state in a crushing mechanism 1. After the crushing is completed, the rare earth metal powder is introduced into the inner chamber 31 through a feed pipe 4; at the same time, the planetary member 341 of the uniform component 34 borrows the working principle of the planetary gear, and the initial power source crushing motor 11 rotates to drive the stirring member 342 to rotate and revolve, thereby better multi-region and multi-directional presenting a large range of uniform stirring of the rare earth metal powder in the inner chamber 31.

[0042] In addition, the rotation of the heating motor 351 drives the connecting piece 353 to rotate, thereby driving the nickel-chromium alloy heat-conducting column 354, so that the heat flow generated by the nickel-chromium alloy heat-conducting column 354 is in a columnar flow state, that is, the rotation of a single heating component 35 can form a columnar heat source and continuously dissipate it to the surroundings, and with the assistance of the operation of multiple heating components 35, the rare earth metal powder can be uniformly heated and calcined in an all-round and large range, ultimately achieving the improvement of the heating and calcination efficiency of the rare earth metal powder and reducing the subsequent impact on its electrolysis effect, thereby improving the recovery efficiency of rare earth metal slag.

[0043] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A device for recovering rare earth metals from rare earth metal slag, comprising a crushing mechanism (1) and an electrolysis mechanism (2), characterized in that: A uniform calcining mechanism (3) is connected between the pulverizing mechanism (1) and the electrolysis mechanism (2). The uniform calcining mechanism (3) comprises an inner chamber (31), an outer chamber (32), a power component (33), a uniform component (34) and a plurality of heating components (35), wherein the inner chamber (31) is built in the outer chamber (32). The power assembly (33) is disposed in the inner chamber (31) and is rotatably connected to the pulverizing mechanism (1). The uniform component (34) is rotatably connected to the lower end of the power component (33). A plurality of groups of vertical spacer rings of the heating assembly (35) are arranged on the side wall of the outer chamber (32). A feed pipe (4) is connected between the inner chamber (31) and the pulverizing mechanism (1), and a first valve body (41) is provided on the feed pipe (4); a discharge pipe (5) is connected between the inner chamber (31) and the electrolysis mechanism (2), and a second valve body (51) is provided on the discharge pipe (5).

2. The device for recovering rare earth metals from rare earth metal slag according to claim 1, characterized in that: The power assembly (33) comprises a transmission member (331) and a rotating member (332); the rotating member (332) is arranged in the inner chamber (31); and the transmission member (331) is connected between the pulverizing motor (11) of the pulverizing mechanism (1) and the rotating member (332).

3. The device for recovering rare earth metals from rare earth metal slag according to claim 2, characterized in that: The rotating member (332) comprises a driving shaft group (100) and a driven shaft group (200), wherein the driving shaft group (100) comprises a driving shaft member (101) and a first gear (102), wherein the driving shaft member (101) is vertically rotatably connected to the upper end of the outer chamber (32), and its distal end extends into the inner chamber (31) and is provided with the first gear (102). The driven shaft assembly (200) comprises a driven shaft member (201), a second gear (202) and a bracket (203); the bracket (203) is arranged in the inner chamber (31); the driven shaft member (201) is rotatably connected to the bracket (203); the bracket (203) is provided with the second gear (202) on the driven shaft member (201); the second gear (202) is meshedly connected with the first gear (102); The lower end of the driven shaft (201) is rotatably connected to the uniform component (34).

4. The device for recovering rare earth metals from rare earth metal slag according to claim 3, characterized in that: The transmission member (331) comprises a driving gear (3311), a transmission belt (3312) and a driven gear (3313); the driving gear (3311) is arranged at the output end of the pulverizing motor (11); the driven gear (3313) is arranged on the driving shaft member (101); and the transmission belt (3312) is connected between the driving gear (3311) and the driven gear (3313).

5. The device for recovering rare earth metals from rare earth metal slag according to claim 3, characterized in that: The uniform component (34) comprises a planetary component (341) and a stirring component (342); the planetary component (341) comprises a sun gear (3411), a planetary gear (3412) and a ring gear (3413); the sun gear (3411) is arranged at the lower end of the driven shaft component (201); the ring gear (3413) is arranged at the lower end of the bracket (203); the planetary gear (3412) is meshedly connected between the ring gear (3413) and the sun gear (3411); and the stirring component (342) is arranged inside the planetary gear (3412).

6. The device for recovering rare earth metals from rare earth metal slag according to claim 5, characterized in that: The stirring member (342) comprises a stirring shaft (3421) and a plurality of stirring blades (3422); the stirring shaft (3421) is arranged inside the planetary gear (3412); and a plurality of stirring blade (3422) spacer rings are arranged on the stirring shaft (3421).

7. The device for recovering rare earth metals from rare earth metal slag according to claim 6, characterized in that: The stirring blade (3422) is provided with a discharge trough (300).

8. The device for recovering rare earth metals from rare earth metal slag according to claim 1, characterized in that: The heating component (35) comprises a heating motor (351), a heating shaft (352), a connecting piece (353) and a plurality of nickel-chromium alloy heat-conducting columns (354); the heating motor (351) is arranged on the outer wall of the outer chamber (32), and its output end is connected to the heating shaft (352); the heating shaft (352) is rotatably connected to the inner wall of the outer chamber (32); two ends of the heating shaft (352) are respectively connected to a connecting piece (353); and a plurality of nickel-chromium alloy heat-conducting columns (354) are connected between two connecting pieces (353).

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