Rare earth calcining equipment

Abstract

The rare earth calcining equipment comprises a rotary kiln, a cover body, a feeding assembly and a driving assembly, and the rotary kiln comprises a first pipe body and a second pipe body which are sequentially connected; the cover body is detachable and arranged at the top end of the first pipe body, and the top of the cover body communicates with a feeding bin. The feeding assembly is arranged on the inner side of the cover body and comprises a mounting seat, a rotating shaft, a grinding disc and a filter sieve basket, and the mounting seat is erected in the middle of the cover body through a plurality of frame bodies; the rotating shaft comprises a first shaft body and a second shaft body, the first shaft body is connected with the second shaft body through a speed changing part, a feeding auger and a grinding roller are sequentially arranged on the outer side of the first shaft body from top to bottom, and the feeding auger extends upwards into the feeding bin; the lower end of the second shaft body movably penetrates through the mounting seat and is provided with crushing blades; the driving assembly is connected with the filter sieve basket and the speed changing part. Therefore, the rare earth raw material can be efficiently and fully crushed to ensure that the rare earth raw material reaches a qualified particle size range, so that the calcining effect can be ensured.

Description

Technical Field

[0001] The present application relates to the technical field of rare earth production, and in particular to a rare earth calcining device. Background Art

[0002] Rare earth is a general term for 17 metal elements in the periodic table, including lanthanide elements, scandium and yttrium. Rare earth elements have excellent optical, electromagnetic and other physical properties, and can be combined with other materials to form a wide variety of new materials with different properties. They are known as "industrial vitamins" and "industrial gold" and are important strategic resources.

[0003] Rare earth calcination is an important step in the rare earth processing process, which is usually carried out using a rare earth rotary kiln. Prior to this, the raw materials need to undergo a crushing pretreatment stage to increase their activity level and lay a good foundation for the subsequent calcination chemical reaction. This pretreatment not only ensures the uniformity of the raw material properties, thereby enhancing the repeatability and stability of the product, but also the ground and refined materials can more effectively exchange heat with the calcination zone, significantly accelerating the calcination process and optimizing the overall production efficiency.

[0004] However, most current calcining devices are equipped with simple crushing components directly at the entrance of the rotary kiln to perform preliminary crushing of the materials entering the kiln. This practice often leads to insufficient crushing and lack of screening and filtration, which affects the calcination effect of the powder raw materials. Summary of the invention

[0005] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0006] To this end, one purpose of the present application is to provide a rare earth calcining device that can efficiently and fully crush the rare earth raw materials to ensure that they reach a qualified particle size range, thereby ensuring the calcination effect.

[0007] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a rare earth calcining equipment, including a rotary kiln, a cover body, a feed assembly and a drive assembly, wherein the rotary kiln includes a first tube body and a second tube body connected in sequence, wherein the lower side of the first tube body is bent, and the second tube body is inclined; the cover body is detachable and is arranged on the top of the first tube body, and the top of the cover body is connected to a feed bin; the feed assembly is arranged inside the cover body, and the feed assembly includes a mounting seat, a rotating shaft, a grinding disc and a filter screen basket, wherein the mounting seat is mounted in the middle of the cover body through a plurality of frames; the rotating shaft includes a first A shaft body and a second shaft body, wherein the first shaft body is connected to the second shaft body through a speed change member, a feeding auger and a grinding roller are sequentially arranged on the upper and lower outer sides of the first shaft body, the feeding auger extends upward into the feeding bin; the lower end of the second shaft body movably passes through the mounting seat and is provided with a crushing blade; the grinding disc is arranged above the mounting seat, and the top surface of the grinding disc is in contact with the grinding roller; the filter screen basket is arranged in a truncated cone shape, the upper end of the filter screen basket is movably connected to the inner wall of the cover body, and the crushing blade is located on the inner side of the filter screen basket; the drive assembly is respectively connected to the filter screen basket and the speed change member.

[0008] In addition, the rare earth calcining equipment proposed in the present application may also have the following additional technical features:

[0009] In one embodiment of the present application, the speed change member includes a main bevel gear and two slave bevel gears, wherein the main bevel gear is connected to the driving assembly, the two slave bevel gears are respectively meshed with the main bevel gear, and the two slave bevel gears are respectively sleeved on the outer side of the first shaft body and the outer side of the second shaft body, and the number of teeth of the slave bevel gear located at the bottom is less than the number of teeth of the slave bevel gear located at the top.

[0010] In one embodiment of the present application, the driving assembly includes a first motor and a second motor, wherein the first motor is arranged on the mounting seat, and the output end of the first motor is connected to the main bevel gear; the cover body extends to one side to provide an accommodating cavity, the output end of the second motor passes through the accommodating cavity and is provided with a rotating wheel, and the rotating wheel and the filter screen basket are connected by a synchronous belt.

[0011] In one embodiment of the present application, the first shaft is movably connected to the second shaft.

[0012] In one embodiment of the present application, a mounting shell is sleeved on the outer side of the first shaft, and the grinding roller is movably mounted on each outer facade of the mounting shell.

[0013] In one embodiment of the present application, a cover body is sleeved on the outer side of the first shaft body, the cover body is arranged above the mounting shell, and the mounting shell is located inside the cover body.

[0014] In one embodiment of the present application, the second tube body includes a fixed section and two rotating sections, wherein the two rotating sections are movably disposed at two ends of the fixed section, and a feed port is disposed on the fixed section.

[0015] In one embodiment of the present application, a first gear is sleeved on the outer side of each rotating section, two of the first gears are respectively meshed with a second gear, and a third motor is disposed on the second gear.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1. The rare earth raw materials can go through an efficient and orderly process, completing feeding, grinding, filtering and crushing in sequence. This process ensures that the rare earth raw materials are fully crushed to the required particle size range, which lays a solid foundation for the calcination process, thereby ensuring the calcination effect;

[0018] 2. During operation, the rotating shaft and the filter basket rotate in opposite directions to achieve collaborative operation. The ground rare earth raw materials are then screened in the filter basket, and those that meet the standards are smoothly sent to the rotary kiln for calcination. Rare earth raw materials that fail to meet the standards are driven to rotate inside the filter basket as the filter basket rotates. At this time, the crushing blades will crush these rare earth raw materials until their particle size meets the standard, and then they will pass through the filter basket and enter the rotary kiln. This series of steps ensures that the rare earth raw materials are fully crushed;

[0019] 3. The speed change part can adjust the rotation speed of the first rotating shaft and the second rotating shaft, thereby ensuring that the first shaft drives the feeding auger to transport materials stably and precisely, while allowing the second shaft to efficiently crush the rare earth raw materials that do not meet the standards, thereby ensuring the calcination effect.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a rare earth calcining device according to an embodiment of the present application;

[0023] Figure 2An exploded view of a rare earth calcining device according to an embodiment of the present application;

[0024] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a rare earth calcining device according to an embodiment of the present application.

[0027] As shown in the figure: 10, rotary kiln; 11, first tube body; 12, second tube body; 121, fixed section; 1211, feed port; 122, rotating section; 1221, first gear; 20, cover body; 201, accommodating chamber; 21, feed bin; 30, feed assembly; 31, mounting seat; 311, frame; 32, rotating shaft; 321, first shaft body; 322, second shaft body; 33, grinding disc; 34, filter screen basket; 41, first motor; 42, second motor; 421, rotating wheel; 422, synchronous belt; 43, third motor; 431, second gear; 50, feeding auger; 60, grinding roller; 61, mounting shell; 70, crushing blade; 80, speed change member; 81, main bevel gear; 82, slave bevel gear; 90, cover body. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] The rare earth calcining equipment according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0030] like Figure 1-Figure 5 As shown, the rare earth calcining equipment of the embodiment of the present application may include a rotary kiln 10, a cover body 20, a feed assembly 30 and a drive assembly (not shown in the figure).

[0031] The rotary kiln 10 may include a first tube body 11 and a second tube body 12 connected in sequence, wherein the lower side of the first tube body 11 is bent and the second tube body 12 is inclined. The second tube body 12 may include a fixed section 121 and two rotating sections 122, wherein the two rotating sections 122 are movably disposed at both ends of the fixed section 121, and a feed port 1211 is disposed on the fixed section 121. A first gear 1221 is sleeved on the outer side of each rotating section 122, and the two first gears 1221 are respectively meshed on the second gear 431, and the second gear 431 is provided with a third motor 43.

[0032] It should be noted that the rotary kiln 10 described in this embodiment can calcine rare earth raw materials, and the fixed section 121 provided can improve the rotation stability of the two rotating sections 122, and the feed port 1211 can be used to add fuel gas, combustion-supporting gas, and protective gas under certain conditions to the rotary kiln 10, thereby ensuring the calcination quality of rare earth oxides and improving production efficiency.

[0033] It can be understood that the third motor 43 can drive the two first gears 1221 to rotate synchronously through the second gear 431, so that the two rotating sections 122 can rotate synchronously, and further the two rotating sections 122 can rotate synchronously.

[0034] The cover body 20 is detachable and is arranged at the top of the first tube body 11. The top of the cover body 20 is connected to a feed bin 21. The feed assembly 30 is arranged on the inner side of the cover body 20. The feed assembly 30 may include a mounting seat 31, a rotating shaft 32, a grinding disc 33 and a filter screen basket 34, wherein the mounting seat 31 is mounted on the middle of the cover body 20 through a plurality of frames 311, and the plurality of frames 311 are located between the mounting seat 31 and the cover body 20. The gaps between the plurality of frames 311 enable the upper and lower parts of the mounting seat 31 to be connected, and enable the ground rare earth raw materials to fall from the gaps between the grinding disc 33 and the plurality of frames 311 into the filter screen basket 34 below.

[0035] The rotating shaft 32 may include a first shaft body 321 and a second shaft body 322, wherein the first shaft body 321 is movably connected to the second shaft body 322. A feeding auger 50 and a grinding roller 60 are sequentially arranged on the upper and lower sides of the outer side of the first shaft body 321, and the feeding auger 50 extends upward into the feed bin 21. A mounting shell 61 is sleeved on the outer side of the first shaft body 321, and a grinding roller 60 is movably arranged on each outer surface of the mounting shell 61. A cover body 90 is sleeved on the outer side of the first shaft body 321, and the cover body 90 is arranged above the mounting shell 61, and the mounting shell 61 is located inside the cover body 90. The set cover body 90 can shield the part where the mounting seat 31 is connected to the grinding roller 60, and at the same time can receive the rare earth raw materials entering the cover body 20 from the feed bin 21, and make the rare earth raw materials evenly dispersed on the grinding disc 33. The lower end of the second shaft body 322 movably penetrates the mounting seat 31 and is provided with a crushing blade 70.

[0036] The grinding disc 33 is disposed above the mounting seat 31, and the top surface of the grinding disc 33 contacts the grinding roller 60. The filter basket 34 is arranged in a truncated cone shape, and the upper end of the filter basket 34 is movably connected to the inner wall of the cover body 20, and the crushing blade 70 is located on the inner side of the filter basket 34.

[0037] The driving assembly is connected to the filter screen basket 34 and the speed changer 80 respectively. The driving assembly may include a first motor 41 and a second motor 42, wherein the first motor 41 is arranged on the mounting seat 31, and the output end of the first motor 41 is connected to the main bevel gear 81. The cover body 20 extends to one side to be provided with an accommodating cavity 201, and the output end of the second motor 42 passes through the accommodating cavity 201 and is provided with a rotating wheel 421, and the rotating wheel 421 and the filter screen basket 34 are connected by a synchronous belt 422.

[0038] It should be noted that the driving assembly described in this embodiment can drive the filter screen basket 34 and the speed change member 80 to operate respectively, so that after the speed change member 80 is operated, it can drive the rotating shaft 32 to rotate, and the rotation direction of the rotating shaft 32 is opposite to the rotation direction of the filter screen basket 34, so that the rotation direction of the crushing blade 70 is inconsistent with the rotation direction of the rare earth raw materials that fail to meet the standards on the inside of the filter screen basket 34, which helps the crushing blade 70 to efficiently crush these rare earth raw materials, thereby ensuring that the rare earth raw materials are fully crushed to the required particle size range, thereby laying a solid foundation for the calcination process, thereby ensuring the calcination effect.

[0039] The first shaft 321 is connected to the second shaft 322 through the speed changer 80. The speed changer 80 may include a main bevel gear 81 and two slave bevel gears 82, wherein the main bevel gear 81 is connected to the first motor 41, the two slave bevel gears 82 are respectively meshed with the main bevel gear 81, and the two slave bevel gears 82 are respectively sleeved on the outside of the first shaft 321 and the outside of the second shaft 322, and the number of teeth of the lower slave bevel gear 82 is less than the number of teeth of the upper slave bevel gear 82.

[0040] It should be noted that the speed change component 80 described in this embodiment can operate under the drive of the first motor 41, thereby driving the rotating shaft 32 to rotate, and at the same time making the rotation speed of the first shaft 321 greater than the rotation speed of the second shaft 322, thereby ensuring that the first shaft 321 drives the feeding auger 50 to perform stable and precise material transportation, and at the same time allowing the second shaft 322 to efficiently crush substandard rare earth raw materials to ensure the calcination effect.

[0041] Specifically, when rare earths need to be calcined, the relevant personnel first put the rare earth raw materials into the feed bin 21. During the rotation of the rotating shaft 32, the rare earth raw materials in the feed bin 21 can be transported to the grinding disc 33 below through the feeding auger 50, and then the rare earth raw materials can be ground and crushed through the grinding roller 60. The ground rare earth raw materials fall into the filter basket 34 below through the edge of the grinding disc 33 for screening, and the rare earth raw materials that meet the standards smoothly enter the rotary kiln 10 for calcination. The rare earth raw materials that fail to meet the standards are driven to rotate inside the filter basket 34 as the filter basket 34 rotates. At this time, the crushing blade 70 will crush these rare earth raw materials until their particle size meets the standard, and then enter the rotary kiln 10 through the filter basket 34. This series of steps together ensure that the rare earth raw materials are fully crushed.

[0042] In summary, in the rare earth calcination equipment of the embodiment of the present application, the rare earth raw materials can undergo an efficient and orderly process, completing feeding, grinding, filtering and crushing in sequence. This process ensures that the rare earth raw materials are fully crushed to a particle size range that meets the requirements, thereby laying a solid foundation for the calcination process, thereby ensuring the calcination effect.

[0043] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A rare earth calcining device, characterized in that: The invention comprises a rotary kiln (10), a cover body (20), a feed assembly (30) and a drive assembly, wherein: The rotary kiln (10) comprises a first tube body (11) and a second tube body (12) which are connected in sequence, wherein the lower side of the first tube body (11) is bent and the second tube body (12) is inclined. The cover body (20) is detachable and is arranged on the top of the first tube body (11); the top of the cover body (20) is connected to a feed bin (21); The feed assembly (30) is arranged on the inner side of the cover body (20), and comprises a mounting seat (31), a rotating shaft (32), a grinding disc (33) and a filter basket (34), wherein: The mounting seat (31) is mounted on the middle part of the cover body (20) via a plurality of frames (311); The rotating shaft (32) comprises a first shaft (321) and a second shaft (322), wherein the first shaft (321) is connected to the second shaft (322) via a speed change member (80), a feeding auger (50) and a grinding roller (60) are sequentially arranged on the upper and lower sides of the outer side of the first shaft (321), and the feeding auger (50) extends upward into the feeding bin (21); the lower end of the second shaft (322) movably passes through the mounting seat (31) and is provided with a crushing blade (70); The grinding disc (33) is arranged above the mounting seat (31), and the top surface of the grinding disc (33) is in contact with the grinding roller (60); The filter basket (34) is arranged in a truncated cone shape, the upper end of the filter basket (34) is movably connected to the inner wall of the cover body (20), and the crushing blade (70) is located on the inner side of the filter basket (34); The driving assembly is connected to the filter basket (34) and the speed change member (80) respectively.

2. The rare earth calcining equipment according to claim 1, characterized in that: The speed change member (80) comprises a main bevel gear (81) and two slave bevel gears (82), wherein the main bevel gear (81) is connected to the driving assembly, the two slave bevel gears (82) are respectively meshed with the main bevel gear (81), and the two slave bevel gears (82) are respectively sleeved on the outer side of the first shaft (321) and the outer side of the second shaft (322), and the number of teeth of the slave bevel gear (82) located at the bottom is less than the number of teeth of the slave bevel gear (82) located at the top.

3. The rare earth calcining equipment according to claim 2, characterized in that: The driving assembly comprises a first motor (41) and a second motor (42), wherein: The first motor (41) is arranged on the mounting seat (31), and the output end of the first motor (41) is connected to the main bevel gear (81); The cover body (20) is extended to one side to be provided with a receiving cavity (201); the output end of the second motor (42) passes through the receiving cavity and is provided with a rotating wheel (421); the rotating wheel (421) and the filter screen basket (34) are connected via a synchronous belt (422).

4. The rare earth calcining equipment according to claim 2, characterized in that: The first shaft (321) is movably connected to the second shaft (322).

5. The rare earth calcining equipment according to claim 1, characterized in that: The outer side of the first shaft (321) is sleeved with a mounting shell (61), and each outer facade of the mounting shell (61) is movably provided with the grinding roller (60).

6. The rare earth calcining equipment according to claim 5, characterized in that: A cover body (90) is sleeved on the outer side of the first shaft body (321), the cover body (90) is arranged above the mounting shell (61), and the mounting shell (61) is located on the inner side of the cover body (90).

7. The rare earth calcining equipment according to claim 1, characterized in that: The second tube body (12) comprises a fixed section (121) and two rotating sections (122), wherein the two rotating sections (122) are movably arranged at two ends of the fixed section (121), and a feed port (1211) is arranged on the fixed section (121).

8. The rare earth calcining equipment according to claim 7, characterized in that: A first gear (1221) is sleeved on the outer side of each rotating section (122), and two of the first gears (1221) are respectively meshed with a second gear (431), and a third motor (43) is provided on the second gear (431).

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