Energy-saving rotary kiln for rare earth
The dual-kiln body structure with staggered dividing tips and thermal insulation addresses agglomeration and temperature issues in rare earth rotary kilns, ensuring efficient material handling and discharge.
Patent Information
- Application Number
- CN202420841860.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-23
AI Technical Summary
Current rare earth rotary kilns face issues with agglomeration and uneven temperature distribution, leading to material sticking at the discharge port and inefficient material handling.
The design incorporates a dual-kiln body structure with staggered dividing tips and a driving mechanism to rotate the second kiln body, utilizing relative rotation forces to break up agglomerated materials, combined with thermal insulation to control temperature uniformity and a fixed discharge port for efficient material handling.
The solution effectively prevents material sticking, ensures uniform heating, and facilitates easy discharge of rare earth materials while maintaining temperature control, enhancing operational efficiency and ease of use.
Smart Images
Figure CN222231255U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of rare earths, in particular to an energy-saving rotary kiln for rare earths. Background Art
[0002] Rare earths are known as "industrial vitamins" and have become an extremely important strategic resource. Rare earth elements have been widely used in the fields of petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials, etc. With the advancement of science and technology and the continuous breakthroughs in application technology, the value of rare earth oxides will become increasingly greater. In order to meet the production requirements of smelting, rare earth minerals are separated from gangue minerals and other useful minerals through mineral processing before smelting to increase the content of rare earth oxides and obtain rare earth concentrates that can meet the requirements of rare earth metallurgy. The ore dressing and processing of rare earth ores Rare earth rotary kilns are generally used in production. The current rare earth rotary kilns are prone to agglomeration and the temperature in the internal area is uneven. The State Intellectual Property Office issued an authorization announcement on September 26, 2017, with the authorization announcement number CN206521516U: "A rare earth roasting rotary kiln". The patent discloses a rare earth roasting rotary kiln device, but when the device is in use, the discharge port is always rotating, which is not easy to receive the material, and there is also the problem of agglomerated rare earths getting stuck at the dividing tip. Therefore, we designed an energy-saving rotary kiln for rare earths. Utility Model Content
[0003] The utility model provides an energy-saving rotary kiln for rare earth, which is used to solve the defects in the prior art.
[0004] The utility model is realized through the following technical solutions:
[0005] An energy-saving rotary kiln for rare earths comprises a base, on which a rotary kiln body is inclined, a partition is fixedly arranged in the rotary kiln body, a through groove is provided on the partition, a smoke pipe is fixedly arranged in the through groove, a smoke inlet and a discharge port are provided at one end of the rotary kiln body, a smoke outlet and a feed port are provided at the other end of the rotary kiln body, and a plurality of through holes are provided on the smoke pipe, and the characteristic is that the rotary kiln body is composed of a first kiln body and a second kiln body, the first kiln body is fixedly mounted on the base, the second kiln body is rotatably mounted on the base, the first kiln body and the second kiln body are in abutment and contact with each other, a driving mechanism for driving the second kiln body to rotate is provided on the base, thermal insulation linings are fixedly arranged on the inner walls of the first kiln body and the second kiln body respectively, a plurality of first dividing spikes are fixedly arranged on the inner periphery of the thermal insulation lining of the second kiln body, a plurality of second dividing spikes are fixedly arranged on the outer periphery of the corresponding smoke pipe, and the first dividing spikes and the second dividing spikes are alternately distributed.
[0006] In the energy-saving rotary kiln for rare earth as described above, the driving mechanism includes a motor, which is fixedly mounted on a base, a coaxial spur gear is fixedly mounted on the rotating shaft of the motor, a coaxial gear ring is fixedly mounted on the outer periphery of the second kiln body, the gear ring is meshed with the spur gear, and a fixing ring is rotatably mounted on the outer periphery of the second kiln body through a bearing, and the fixing ring is fixedly mounted on the base.
[0007] In the energy-saving rotary kiln for rare earth as described above, the interfaces between the first kiln body and the second kiln body are L-shaped structures that can cooperate with each other, and a coaxial sealing tube is rotatably installed on the outer periphery of the interface between the first kiln body and the second kiln body.
[0008] In the energy-saving rotary kiln for rare earth as described above, two guide plates symmetrically distributed up and down are fixedly installed on the first kiln body.
[0009] In the energy-saving rotary kiln for rare earth as described above, the through hole is opened on the bottom side of the flue gas pipe, and a slag discharge port is opened on the flue gas pipe.
[0010] In the energy-saving rotary kiln for rare earth as described above, one end of the flue gas pipe is fixedly mounted on the second kiln body through a plurality of connecting rods.
[0011] The advantages of the utility model are: the utility model has a simple structure and an ingenious design. The position of the discharge port of the rotary kiln body is fixed, which is convenient for receiving materials. Moreover, by arranging the first dividing tips and the second dividing tips which are staggered, the force generated by the relative rotation can be utilized to break up the rare earth blocks stuck in the middle, thereby reducing the possibility of agglomerated rare earth being stuck at the dividing tips. The utility model is easy to use, can meet market demand, and is suitable for promotion. When the utility model is used, the rare earth material is first introduced into the second kiln body from the feed port, and the flue gas is introduced into the smoke inlet. The second kiln body is driven to rotate by the driving mechanism, and the rare earth material slides from right to left. The smoke enters the smoke pipe and enters the rotary kiln body from the through hole, so as to evenly heat the rare earth material. The rotation of the second kiln body can drive the first dividing tip to rotate, and the first dividing tip can break up the agglomerated materials. When the agglomerated materials are stuck at the first dividing tip, the force generated by the relative rotation of the first dividing tip and the second dividing tip is utilized, so that the second dividing tip can break up the materials stuck at the first dividing tip, and finally the rare earth material can be discharged from the rotary kiln body from the discharge port, and the smoke is finally discharged from the rotary kiln body from the smoke outlet. The heat-insulating lining can effectively control the temperature inside the rotary kiln body. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0013] Figure 1 It is a schematic diagram of the structure of the utility model; Figure 2 for Figure 1 A-direction view.
[0014] Figure numerals: 1. base, 2. rotary kiln body, 3. partition, 4. through groove, 5. flue gas pipe, 6. smoke inlet, 7. discharge port, 8. smoke outlet, 9. feed port, 10. through hole, 11. first kiln body, 12. second kiln body, 13. thermal insulation lining, 14. first dividing tip, 15. second dividing tip, 20. motor, 21. spur gear, 22. gear ring, 23. fixing ring, 30. sealing tube, 40. guide plate, 50. slag discharge port, 60. connecting rod. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] An energy-saving rotary kiln for rare earth, such as Figure 1 , 2As shown, it comprises a base 1, on which a rotary kiln body 2 is inclined, the left side of the rotary kiln body 2 is low, and the right side is high, a partition 3 is fixedly arranged in the rotary kiln body 2, a through slot 4 is opened on the partition 3, a smoke pipe 5 is fixedly installed in the through slot 4, one end of the smoke pipe 5 is open, and the other end is closed, a smoke inlet 6 and a discharge port 7 are arranged at one end of the rotary kiln body 2, a smoke outlet 8 and a feed port 9 are arranged at the other end of the rotary kiln body 2, and a plurality of through holes 10 are opened on the smoke pipe 5, characterized in that: the rotary kiln body 2 is composed of a first kiln body 11 and a second kiln body 12, the smoke inlet 6 and the discharge port 7 are opened on the first kiln body 11, and the smoke outlet 8 and the feed port 9 are opened on the second kiln body 12, The first kiln body 11 is fixedly mounted on the base 1, and the second kiln body 12 is rotatably mounted on the base 1. The first kiln body 11 and the second kiln body 12 are in contact with each other, and a driving mechanism for driving the second kiln body 12 to rotate is provided on the base 1. Insulating linings 13 are fixedly mounted on the inner walls of the first kiln body 11 and the second kiln body 12, respectively. A plurality of first dividing tips 14 are fixedly mounted on the inner periphery of the insulating lining 13 of the second kiln body 12, and a plurality of second dividing tips 15 are fixedly mounted on the outer periphery of the corresponding flue gas pipe 5. The second kiln body 12, the first dividing tips 14, the second dividing tips 15, and the flue gas pipe 5 are coaxially arranged, and the first dividing tips 14 and the second dividing tips 15 are alternately distributed. The utility model has a simple structure and an ingenious design. The position of the discharge port 7 of the rotary kiln body 2 is fixed, which is convenient for receiving materials. By arranging the first dividing tips 14 and the second dividing tips 15 which are staggered, the force generated by the relative rotation can be used to break up the rare earth blocks stuck in the middle, reducing the possibility of agglomerated rare earth getting stuck at the dividing tips. The utility model is easy to use, can meet market demand, and is suitable for promotion. When using the utility model, firstly, the rare earth material is introduced into the second kiln body 12 from the feed port 9, and the flue gas is introduced into the smoke inlet 6. The second kiln body 12 is driven to rotate by the driving mechanism, and the rare earth material slides from right to left. The smoke enters the smoke pipe 5 and enters the rotary kiln body 2 from the through hole 10, so as to evenly heat the rare earth material. The rotation of the second kiln body 12 can drive the first dividing tip 14 to rotate, and the first dividing tip 14 can break up the agglomerated materials. When agglomerated materials are stuck at the first dividing tip 14, the force generated by the relative rotation of the first dividing tip 14 and the second dividing tip 15 is utilized, and the second dividing tip 15 can break up the materials stuck at the first dividing tip 14, so that the rare earth material can be discharged from the rotary kiln body 2 from the discharge port 7, and the smoke is finally discharged from the rotary kiln body 2 from the smoke outlet 8. The thermal insulation lining 13 can effectively control the temperature in the rotary kiln body 2.
[0017] Specifically, as shown in the figure, the driving mechanism described in this embodiment includes a motor 20, which is fixedly mounted on the base 1, a coaxial spur gear 21 is fixedly mounted on the rotating shaft of the motor 20, a coaxial gear ring 22 is fixedly mounted on the outer periphery of the second kiln body 12, the gear ring 22 is meshed with the spur gear 21, and a fixing ring 23 is rotatably mounted on the outer periphery of the second kiln body 12 through a bearing, and the fixing ring 23 is fixedly mounted on the base 1. The rotating shaft of the motor 20 drives the spur gear 21 to rotate, and the spur gear 21 can drive the gear ring 22 and the second kiln body 12 to rotate.
[0018] Specifically, as shown in the figure, in this embodiment, the interfaces of the first kiln body 11 and the second kiln body 12 are respectively L-shaped structures that can cooperate with each other, and the outer periphery of the interface of the first kiln body 11 and the second kiln body 12 is rotatably installed with a coaxial sealing tube 30, one end of the sealing tube 30 is rotatably installed on the outer periphery of the first kiln body 11 through a sealing bearing, and the other end of the sealing tube 30 is also rotatably installed on the outer periphery of the second kiln body 12 through a sealing bearing. The sealing effect of the interface of the first kiln body 11 and the second kiln body 12 can be increased by providing the sealing tube 30, and the interface of the first kiln body 11 and the second kiln body 12 is an L-shaped structure that cooperates with each other to prevent leakage of materials.
[0019] Further, as shown in the figure, in this embodiment, two guide plates 40 symmetrically distributed up and down are fixedly installed on the first kiln body 11. The guide plates 40 are conducive to guiding the smoke from the smoke inlet 6 into the smoke pipe 5.
[0020] Furthermore, as shown in the figure, the through hole 10 of this embodiment is provided on the bottom side of the smoke pipe 5, and a slag discharge port 50 is provided on the smoke pipe 5. The through hole 10 provided on the bottom side of the smoke pipe 5 can prevent materials from entering the smoke pipe 5 from above, thereby avoiding affecting the normal use of the smoke pipe 5. Although a small part of the materials still enter the smoke pipe 5, the smoke pipe 5 is also inclined, and the materials in the smoke pipe 5 can be discharged from the slag discharge port 50 to the discharge port 7.
[0021] Furthermore, as shown in the figure, one end of the smoke pipe 5 of this embodiment is fixedly mounted on the second kiln body 12 through a plurality of connecting rods 60. The connecting rods 60 can increase the stability of the smoke pipe 5 when in use.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. An energy-saving rotary kiln for rare earth, comprising a base (1), a rotary kiln body (2) being obliquely arranged on the base (1), a partition (3) being fixedly arranged in the rotary kiln body (2), a through groove (4) being provided on the partition (3), a smoke pipe (5) being fixedly arranged in the through groove (4), a smoke inlet (6) and a discharge port (7) being provided at one end of the rotary kiln body (2), a smoke outlet (8) and a feed port (9) being provided at the other end of the rotary kiln body (2), a plurality of through holes (10) being provided on the smoke pipe (5), characterized in that: The rotary kiln body (2) is composed of a first kiln body (11) and a second kiln body (12); the first kiln body (11) is fixedly mounted on a base (1); the second kiln body (12) is rotatably mounted on the base (1); the first kiln body (11) and the second kiln body (12) are in contact with each other; a driving mechanism for driving the second kiln body (12) to rotate is provided on the base (1); a heat insulating lining (13) is fixedly mounted on the inner wall of the first kiln body (11) and the second kiln body (12); a plurality of first dividing tips (14) are fixedly mounted on the inner periphery of the heat insulating lining (13) of the second kiln body (12); a plurality of second dividing tips (15) are fixedly mounted on the outer periphery of the corresponding flue gas pipe (5); the first dividing tips (14) and the second dividing tips (15) are arranged in an alternating manner.
2. The energy-saving rotary kiln for rare earth according to claim 1, characterized in that: The driving mechanism comprises a motor (20), the motor (20) is fixedly mounted on the base (1), a coaxial spur gear (21) is fixedly mounted on the rotating shaft of the motor (20), a coaxial gear ring (22) is fixedly mounted on the outer periphery of the second kiln body (12), the gear ring (22) is meshed with the spur gear (21), a fixing ring (23) is rotatably mounted on the outer periphery of the second kiln body (12) via a bearing, and the fixing ring (23) is fixedly mounted on the base (1).
3. The energy-saving rotary kiln for rare earth according to claim 1, characterized in that: The interfaces of the first kiln body (11) and the second kiln body (12) are L-shaped structures that can cooperate with each other, and a coaxial sealing tube (30) is rotatably installed on the outer periphery of the interface of the first kiln body (11) and the second kiln body (12).
4. The energy-saving rotary kiln for rare earth according to claim 1, characterized in that: Two guide plates (40) symmetrically distributed up and down are fixedly mounted on the first kiln body (11).
5. The energy-saving rotary kiln for rare earth according to claim 1, characterized in that: The through hole (10) is provided on the bottom side of the smoke pipe (5), and a slag discharge port (50) is provided on the smoke pipe (5).
6. The energy-saving rotary kiln for rare earth according to claim 1, characterized in that: One end of the flue gas pipe (5) is fixedly mounted on the second kiln body (12) via a plurality of connecting rods (60).