A rotary kiln for smelting laterite nickel ore

Abstract

The application discloses a rotary kiln for smelting laterite nickel ore and belongs to the rotary kiln field, which comprises a chassis, a kiln tail and a kiln head are installed on the chassis, and a rotary kiln main body is arranged between the kiln tail and the kiln head, a feeding structure is installed on the kiln tail, and the feeding structure comprises a fixed hopper, a vibrating motor, a movable hopper and an extension frame. The feeding structure adopts the vibrating motor, the movable hopper and other structures, vibration can be formed in the feeding process, thereby avoiding the occurrence of the blocking condition, the extension frame is used in cooperation with the vibrating motor, the vibrating effect at the movable hopper is further improved, the extension frame can be adjusted, the movable hopper can be adjusted to different heights for use, the heat conduction structure can collect and conduct the waste heat at the heating zone to the preheating zone, the energy loss can be reduced, the energy required by the preheating zone can be saved, the energy consumption is reduced, the rotary connecting assembly is arranged in the discharging structure, the rotary connecting assembly can be quickly disassembled, replaced and adjusted.

Description

Technical Field

[0001] This invention relates to the field of rotary kilns, and particularly to a rotary kiln for smelting laterite nickel ore. Background Technology

[0002] Laterite nickel ore resources are surface weathering crust deposits formed by the weathering, leaching, and deposition of sulfide nickel ore rocks, and are the raw material for nickel production. Nickel produced from laterite nickel ore has good corrosion resistance and is often used in electroplating. Rotary kilns are generally used for smelting laterite nickel ore. A rotary kiln (also known as a rotary calcining kiln) resembles a rotary bed and is also called a rotary bed kiln. It mainly consists of a kiln head, kiln body, kiln tail, and supporting structures. The kiln head has a discharge structure, while the kiln tail has a feed structure. In operation, material is added through the feed structure at the kiln tail. The material enters the kiln body through the kiln tail for heating and other processes. The heated material moves towards the kiln head, while the cooling zone at the end of the kiln body cools the heated material. The cooled material is then discharged from the discharge structure at the kiln head, thus completing the entire material processing operation.

[0003] In existing rotary kiln structures, the feeding hopper is directly fixed to the kiln tail, which easily leads to blockages during the feeding process, affecting normal feeding. Furthermore, the heating zone of the rotary kiln body has a certain temperature on its outer surface, and this temperature is not effectively utilized, resulting in energy loss. In addition, when heating materials, the preheating process in the kiln body requires a certain amount of energy, increasing the operating cost. In existing rotary kilns, the feeding hopper structure is installed at the kiln head and cannot be disassembled or rotated, making it impossible to adjust according to actual conditions, resulting in poor operational flexibility and mediocre performance. Summary of the Invention

[0004] The main objective of this invention is to provide a rotary kiln for smelting laterite nickel ore, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A rotary kiln for smelting laterite nickel ore, comprising:

[0007] Preferably, the base frame has a kiln tail and a kiln head mounted on it, and a rotary kiln body is provided between the kiln tail and the kiln head. A feeding structure is mounted on the kiln tail, and the feeding structure includes a fixed hopper, a vibrating motor, a movable hopper, and a telescopic frame. The fixed hopper is mounted on the kiln tail, the vibrating motor is mounted on the fixed hopper, the movable hopper is connected to the fixed hopper, and the telescopic frame is connected between the fixed hopper and the movable hopper. A heat conduction structure is mounted on the base frame, and the heat conduction structure includes a support rod, a heat absorption pipe, and a preheating pipe. The heat absorption pipe and the preheating pipe are mounted on the support rod, and the support rod is fixedly mounted on the base frame. The heat absorption pipe and the preheating pipe are connected and sleeved on the rotary kiln body. A discharge connector is mounted on the kiln head, and an annular protrusion is fixedly provided at the end of the discharge connector. The discharge connector has a discharge structure, and the discharge structure includes a collecting hood and a rotating connecting assembly. The collecting hood and the rotating connecting assembly are connected, and the rotating connecting assembly is connected to the discharge connector.

[0008] Preferably, the rotary kiln body is provided with a large gear ring, and a reduction motor is fixedly installed on the base frame, and a gear is connected to the reduction motor, the gear being meshed with the large gear ring.

[0009] Preferably, the rotary kiln body consists of three parts: a preheating zone, a heating zone, and a cooling zone. The preheating zone is located near the kiln tail, the cooling zone is located near the kiln head, and the heating zone is located between the preheating zone and the cooling zone.

[0010] Preferably, a tire is fixedly installed on the main body of the rotary kiln, and a support roller is provided on the base frame, with the support roller in contact with the tire.

[0011] Preferably, the fixed bucket is fixed to the kiln tail, the vibrating motor is fixedly connected to the fixed bucket, and the lower end of the movable bucket is inserted into the fixed bucket.

[0012] Preferably, the telescopic frame includes a fixed seat, a guide rod, a movable seat, a spring, and a limiting nut. The fixed seat is fixedly connected to the guide rod and is fixedly installed on the outer surface of the fixed bucket. The movable seat is fixed on the movable bucket and has a through hole. The movable seat is sleeved on the guide rod through the through hole. The spring is sleeved on the guide rod, and the ends of the spring contact the fixed seat and the movable seat respectively. The limiting nut is threaded to the upper end of the guide rod and contacts the movable seat.

[0013] Preferably, the heat conduction structure further includes a connecting pipe, a circulating pump, a suction pipe, and a delivery pipe. The connecting pipe is disposed between the heat absorption pipe and the preheating pipe. The circulating pump is fixed on the base frame. The suction pipe and the delivery pipe are connected to the circulating pump, and the ends of the suction pipe and the delivery pipe are respectively connected to the heat absorption pipe and the preheating pipe.

[0014] Preferably, the feeding structure further includes a feeding hopper, which is fixedly connected to the collecting hood, and the feeding hopper and the collecting hood are in communication.

[0015] Preferably, the rotary connection assembly includes a first connecting sleeve, a second connecting sleeve, a connecting groove, a first connecting plate, a second connecting plate, a connecting bolt, a connecting nut, and a clamping bolt. The connecting groove is formed on the first connecting sleeve and the second connecting sleeve, and the first connecting sleeve and the second connecting sleeve are sleeved on the annular protrusion through the connecting groove. The first connecting plate and the second connecting plate are respectively fixed on the first connecting sleeve and the second connecting sleeve.

[0016] Preferably, the connecting bolt passes through the first connecting plate and the second connecting plate, the connecting nut is threaded to the lower end of the connecting bolt, the clamping bolt is threaded to the first connecting sleeve, and the end of the clamping bolt abuts against the annular protrusion.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The rotary kiln for smelting laterite nickel ore, 1. through the setting of the feeding structure, adopts structures such as vibrating motor and movable bucket, can generate vibration during the feeding process, thereby avoiding the occurrence of blockage and ensuring normal feeding;

[0018] 2. The use of a telescopic frame in conjunction with a vibrating motor further enhances the vibration effect at the movable hopper, thereby improving the feeding efficiency. The telescopic frame is adjustable, allowing the movable hopper to be adjusted to different heights for use.

[0019] 3. Through the heat conduction structure, the waste heat at the heating zone can be collected and conducted to the preheating zone, which can reduce energy loss and save the energy required for the preheating zone, thus reducing energy consumption.

[0020] 4. The material feeding structure is designed with a rotating connection component, which allows for quick disassembly and replacement. It also allows for rotational adjustment, improving the flexibility of the material feeding structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the drive motor in this invention;

[0023] Figure 3 This is a schematic diagram of the feeding structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the telescopic frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the heat conduction structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure at the kiln head of the present invention;

[0027] Figure 7 This is a schematic diagram of the material feeding structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the rotary connection assembly of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.

[0030] In the diagram: 1. Base frame; 2. Kiln tail; 3. Kiln head; 4. Rotary kiln body; 5. Feeding structure; 501. Fixed hopper; 502. Vibrating motor; 503. Movable hopper; 504. Telescopic frame; 5041. Fixed seat; 5042. Guide rod; 5043. Movable seat; 5044. Spring; 5045. Limiting nut; 6. Heat conduction structure; 601. Support rod; 602. Heat absorption pipe; 603. Preheating pipe; 604. Connecting pipe; 605. Circulating pump; 606. Suction pipe; 607. 1. Conveying pipe; 7. Discharge connector; 8. Annular protrusion; 9. Discharge structure; 901. Collection hood; 902. Rotary connecting assembly; 9021. First connecting sleeve; 9022. Second connecting sleeve; 9023. Connecting groove; 9024. First connecting plate; 9025. Second connecting plate; 9026. Connecting bolt; 9027. Connecting nut; 9028. Tightening bolt; 903. Discharge hopper; 10. Large gear ring; 11. Gear motor; 12. Gear; 13. Tire; 14. Support roller. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1-9As shown, a rotary kiln for smelting laterite nickel ore includes a base frame 1, a kiln tail 2 and a kiln head 3 mounted on the base frame 1, and a rotary kiln body 4 disposed between the kiln tail 2 and the kiln head 3. A feeding structure 5 is mounted on the kiln tail 2, a heat conduction structure 6 is mounted on the base frame 1, a discharge connector 7 is mounted on the kiln head 3, and an annular protrusion 8 is fixedly provided at the end of the discharge connector 7. A discharge structure 9 is provided on the discharge connector 7, and a large toothed ring 10 is provided on the rotary kiln body 4. A geared motor 11 is fixedly installed on the base frame 1, and a gear 12 is connected to the geared motor 11. The gear 12 meshes with the large gear ring 10. The rotary kiln body 4 consists of three parts: a preheating zone, a heating zone, and a cooling zone. The preheating zone is close to the kiln tail 2, the cooling zone is close to the kiln head 3, and the heating zone is located between the preheating zone and the cooling zone. A tire 13 is fixedly installed on the rotary kiln body 4, and a support roller 14 is provided on the base frame 1, and the support roller 14 is in contact with the tire 13.

[0033] When using a rotary kiln, the kiln tail 2 and kiln head 3 are installed on the base frame 1, and the rotary kiln body 4 is positioned between the kiln tail 2 and kiln head 3. The base frame 1 is stably placed on the ground. A feeding structure 5 is installed on the kiln tail 2, and a discharging structure 9 is installed on the kiln head 3. A heat conduction structure 6 is also installed on the rotary kiln body 4. After connecting the corresponding circuits, the rotary kiln is put into use. During operation, the reduction motor 11 installed on the base frame 1 is started. After the reduction motor 11 starts running, it drives the gear 12 to rotate. Because the gear 12 is meshed with the large gear ring 10 on the rotary kiln body 4, when the gear 12 rotates, the large gear ring 10 will drive the rotary kiln body 4... The rotary kiln body 4 rotates via the tire 13, while the support roller 14 provides support and guidance to the tire 13, thus ensuring the stability of the rotary kiln body 4 during rotation. After the rotary kiln body 4 starts operating, laterite nickel ore is added to the feed structure 5. The laterite nickel ore falls through the feed structure 5 into the kiln tail 2 and finally enters the rotary kiln body 4. Subsequently, the laterite nickel ore moves towards the kiln head 3 within the rotary kiln body 4. Throughout the process, the initial position of the laterite nickel ore after feeding is located at the preheating zone on the rotary kiln body 4. The preheating zone preheats the laterite nickel ore, causing it to heat up in advance. As the laterite nickel ore raw material moves, when it reaches the heating zone in the rotary kiln body 4, it is heated and continues to rise in temperature, thus achieving the smelting effect. When the heated and smelted material moves to the cooling zone, the cooling zone cools the heated material, allowing it to cool down rapidly. The cooled material continues to move to the feeding connector 7 at the kiln head 3 and is finally discharged through the feeding structure 9. This completes the entire smelting process. Subsequent laterite nickel ore raw materials continue to be fed for smelting, achieving continuous smelting. During continuous smelting, the residual heat in the heating zone of the rotary kiln body 4 is... The heat conduction structure 6 absorbs and conducts heat to the preheating zone, using the preheating zone to transfer residual heat to the laterite nickel ore raw material, thereby preheating the laterite nickel ore raw material. In this way, heat loss at the heating zone can be reduced, and the recovered residual heat can be used for the preheating zone, so that the preheating zone does not need an additional heat source, saving resources and reducing energy consumption. During the entire smelting process, when the laterite nickel ore raw material is fed, the feeding structure 5 can vibrate to avoid blockage and ensure normal feeding. When necessary, the discharging structure 9 can be disassembled or rotated for adjustment, so that the discharging structure 9 can accurately feed the material, improving the flexibility of use.

[0034] In the above embodiments, the feeding structure 5 includes a fixed hopper 501, a vibrating motor 502, a movable hopper 503, and a telescopic frame 504. The fixed hopper 501 is installed on the kiln tail 2, the vibrating motor 502 is installed on the fixed hopper 501, the movable hopper 503 is connected to the fixed hopper 501, and the telescopic frame 504 is connected between the fixed hopper 501 and the movable hopper 503. The fixed hopper 501 is fixed on the kiln tail 2, the vibrating motor 502 is fixedly connected to the fixed hopper 501, and the lower end of the movable hopper 503 is inserted into the fixed hopper 501. The telescopic frame 504 includes a fixed seat 5041, a guide rod 5042, a movable seat 5043, a spring 5044, and a limiting nut 5045. The fixed seat 5041 is fixedly connected to the guide rod 5042, and the fixed seat 5041 is fixedly installed on the outer surface of the fixed hopper 501. The movable seat 5043 is fixed to the movable hopper 504. On the 03, the movable seat 5043 is provided with a through hole, and the movable seat 5043 is sleeved on the guide rod 5042 through the through hole. The spring 5044 is sleeved on the guide rod 5042, and the end of the spring 5044 contacts the fixed seat 5041 and the movable seat 5043 respectively. The limit nut 5045 is threaded to the upper end of the guide rod 5042, and the limit nut 5045 contacts the movable seat 5043. Through the set feeding structure 5, using the vibrating motor 502, movable bucket 503 and other structures, vibration can be generated during the feeding process, thereby avoiding the occurrence of blockage and ensuring normal feeding. The telescopic frame 504 is used in conjunction with the vibrating motor 502 to further improve the vibration effect at the movable bucket 503 and improve the feeding effect. The telescopic frame 504 can be adjusted to make it easy to adjust the movable bucket 503 to different heights for use.

[0035] When using the feeding structure 5, the fixed hopper 501 is installed on the kiln tail 2. When adding lateritic nickel ore raw material, the lateritic nickel ore is added into the movable hopper 503, and then falls from the lower end of the movable hopper 503 into the fixed hopper 501, eventually entering the kiln tail 2. During this process, the vibrating motor 502 on the fixed hopper 501 is running. Under the action of the vibrating motor 502, the entire feeding structure 5 vibrates, thereby exerting force on the lateritic nickel ore raw material inside. This can prevent the lateritic nickel ore raw material from clogging inside the feeding structure 5, ensuring the normal operation of the feeding process. At the same time, during the vibration process, the movable hopper 501... When the bucket 503 is subjected to force, it vibrates along the guide rod 5042 via the movable seat 5043. At the same time, the spring 5044 on the guide rod 5042 is compressed and extended, thus making the movable bucket 503 relatively stable during vibration. The limiting nut 5045 plays a limiting role to prevent the movable bucket 503 from falling off. When needed, the height of the movable bucket 503 can also be adjusted. During adjustment, the limiting nut 5045 is rotated to move it on the guide rod 5042. At this time, under the action of the limiting nut 5045 and the spring 5044, the movable seat 5043 moves the movable bucket 503 until the movable bucket 503 moves to the appropriate height. The structure is simple and the performance is excellent.

[0036] In the above embodiments, the heat conduction structure 6 includes a support rod 601, a heat absorption pipe 602, and a preheating pipe 603. The heat absorption pipe 602 and the preheating pipe 603 are mounted on the support rod 601, and the support rod 601 is fixedly mounted on the base frame 1. The heat absorption pipe 602 and the preheating pipe 603 are connected, and the heat absorption pipe 602 and the preheating pipe 603 are sleeved on the rotary kiln body 4. The heat conduction structure 6 also includes a connecting pipe 604, a circulating pump 605, a suction pipe 606, and a conveying pipe 607, connecting... Pipe 604 is set between heat absorption pipe 602 and preheating pipe 603. Circulation pump 605 is fixed on base frame 1. Suction pipe 606 and delivery pipe 607 are connected to circulation pump 605, and the ends of suction pipe 606 and delivery pipe 607 are respectively connected to heat absorption pipe 602 and preheating pipe 603. Through the heat conduction structure 6, the waste heat at the heating zone can be collected and conducted to the preheating zone, which can reduce energy loss and save the energy required for the preheating zone, thus reducing energy consumption.

[0037] Before using the rotary kiln, the heat-absorbing pipe 602 and preheating pipe 603 in the heat conduction structure 6 are fixed to the base frame 1 by the support rod 601. Simultaneously, the heat-absorbing pipe 602 and preheating pipe 603 are sleeved on the rotary kiln body 4. When the rotary kiln body 4 rotates, the heat-absorbing pipe 602 and preheating pipe 603 will not affect the normal rotation of the rotary kiln body 4. Furthermore, the pipes in the heat conduction structure 6 contain a heat-conducting liquid. When the rotary kiln body 4 smelts laterite nickel ore, the heating belt in the rotary kiln body 4 heats and smelts the laterite nickel ore. A certain amount of residual heat dissipates from the outside of the heating belt, and this residual heat is absorbed by the heat-absorbing pipe 602 and transferred to the heat-conducting liquid. At this time, the circulating pump 605 is in operation. Under the action of the circulating pump 605, the liquid that has absorbed heat and heated up in the heat absorption tube 602 enters the circulating pump 605 through the suction pipe 606, and then enters the preheating tube 603 through the conveying pipe 607. The preheating tube 603 then transfers heat to the preheating zone in the rotary kiln body 4. The preheating zone preheats the laterite nickel ore raw material. At the same time, the liquid that has lost heat in the preheating tube 603 enters the heat absorption tube 602 through the connecting pipe 604. The heat absorption tube 602 continues to absorb and exchange waste heat. This cycle continues, thereby realizing the recovery and utilization of waste heat, reducing energy consumption, and saving energy.

[0038] In the above embodiments, the feeding structure 9 includes a collecting hood 901 and a rotary connecting assembly 902. The collecting hood 901 and the rotary connecting assembly 902 are connected, and the rotary connecting assembly 902 is connected to the feeding connector 7. The feeding structure 9 also includes a feeding hopper 903, which is fixedly connected to the collecting hood 901 and communicates with it. The rotary connecting assembly 902 includes a first connecting sleeve 9021, a second connecting sleeve 9022, a connecting groove 9023, a first connecting plate 9024, a second connecting plate 9025, a connecting bolt 9026, a connecting nut 9027, and a clamping bolt 9028. The connecting groove 9023 is formed on the first connecting sleeve 9021 and the second connecting sleeve 9022. Furthermore, the first connecting sleeve 9021 and the second connecting sleeve 9022 are fitted onto the annular protrusion 8 through the connecting groove 9023. The first connecting plate 9024 and the second connecting plate 9025 are respectively fixed onto the first connecting sleeve 9021 and the second connecting sleeve 9022. The connecting bolt 9026 passes through the first connecting plate 9024 and the second connecting plate 9025. The connecting nut 9027 is threaded to the lower end of the connecting bolt 9026. The tightening bolt 9028 is threaded to the first connecting sleeve 9021, and the end of the tightening bolt 9028 abuts against the annular protrusion 8. The material feeding structure 9 is adopted, and a rotating connecting component 902 is set up, which can be quickly disassembled for replacement and other operations. At the same time, it can be rotated and adjusted, improving the flexibility of the material feeding structure 9.

[0039] When using the feeding structure 9, the material discharged from the feeding connector 7 enters the collecting hood 901 and then exits from the feeding hopper 903. If necessary, the feeding direction of the feeding hopper 903 in the feeding structure 9 can be adjusted. During adjustment, rotate the clamping bolt 9028 on the first connecting sleeve 9021 so that its end moves away from the annular protrusion 8, and then rotate the entire feeding structure 9. During this process, the first connecting sleeve 9021 and the second connecting sleeve 9022 in the rotating connecting assembly 902 rotate on the annular protrusion 8 through the connecting groove 9023. After the feeding hopper 903 is adjusted to the corresponding tilt angle, stop rotating, and then tighten the clamping bolt 9028 so that its end abuts against the annular protrusion 8, thus completing the fixation of the entire feeding structure 9. If disassembly is required... When installing the blanking structure 9, remove the connecting nut 9027 at the lower end of the connecting bolt 9026, pull the connecting bolt 9026 out of the first connecting plate 9024 and the second connecting plate 9025, and then remove the first connecting sleeve 9021 and the second connecting sleeve 9022. When the blanking structure 9 needs to be installed again, the first connecting sleeve 9021 and the second connecting sleeve 9022 are fitted onto the annular protrusion 8 through the connecting groove 9023. The connecting plate is used to connect the connecting bolt 9026 and the connecting nut 9027. Then, the tightening bolt 9028 is rotated to fix it. At this time, due to the snapping effect of the annular protrusion 8 and the connecting groove 9023, the entire blanking structure 9 can be stably installed at the end of the blanking connector 7, thereby ensuring the stability of use.

[0040] The foregoing describes the principles of use, features, and beneficial effects of the present invention. Those skilled in the art will understand from the foregoing that it does not limit the invention; the embodiments and description above illustrate the basic principles and features of the invention. Various changes and modifications can be made to the invention while remaining consistent with its concept, and all such modifications should fall within the scope of protection claimed by the present invention.

Claims

1. A rotary kiln for smelting laterite nickel ore, comprising a base frame (1), wherein a kiln tail (2) and a kiln head (3) are mounted on the base frame (1), and a rotary kiln body (4) is disposed between the kiln tail (2) and the kiln head (3), characterized in that: A feeding structure (5) is installed on the kiln tail (2), and the feeding structure (5) includes a fixed hopper (501), a vibrating motor (502), a movable hopper (503), and a telescopic frame (504). The fixed hopper (501) is installed on the kiln tail (2), the vibrating motor (502) is installed on the fixed hopper (501), the movable hopper (503) is connected to the fixed hopper (501), and the telescopic frame (504) is connected between the fixed hopper (501) and the movable hopper (503). A heat conduction structure (6) is installed on the base frame (1), and the heat conduction structure (6) includes a support rod (601), a heat absorption pipe (602), and a preheating pipe (603). The heat absorption pipe (602) and the preheating pipe (603) are connected to the kiln tail (2). 3) Installed on the support rod (601), and the support rod (601) is fixedly installed on the base frame (1). The heat absorption pipe (602) is connected to the preheating pipe (603), and the heat absorption pipe (602) and the preheating pipe (603) are sleeved on the rotary kiln body (4). A feeding connector (7) is installed on the kiln head (3), and an annular protrusion (8) is fixedly provided at the end of the feeding connector (7). A feeding structure (9) is provided on the feeding connector (7), and the feeding structure (9) includes a material collection hood (901) and a rotary connection assembly (902). The material collection hood (901) and the rotary connection assembly (902) are connected, and the rotary connection assembly (902) is connected to the feeding connector (7).

2. The rotary kiln for smelting laterite nickel ore according to claim 1, characterized in that: The rotary kiln body (4) is provided with a large gear ring (10), and a reduction motor (11) is fixedly installed on the base frame (1). A gear (12) is connected to the reduction motor (11), and the gear (12) is meshed with the large gear ring (10).

3. The rotary kiln for smelting laterite nickel ore according to claim 2, characterized in that: The rotary kiln body (4) consists of three parts: a preheating zone, a heating zone, and a cooling zone. The preheating zone is close to the kiln tail (2), the cooling zone is close to the kiln head (3), and the heating zone is located between the preheating zone and the cooling zone.

4. The rotary kiln for smelting laterite nickel ore according to claim 3, characterized in that: A tire (13) is fixedly installed on the main body (4) of the rotary kiln, and a support roller (14) is provided on the base frame (1), and the support roller (14) is in contact with the tire (13).

5. The rotary kiln for smelting laterite nickel ore according to claim 4, characterized in that: The fixed bucket (501) is fixed on the kiln tail (2), the vibration motor (502) is fixedly connected to the fixed bucket (501), and the lower end of the movable bucket (503) is inserted into the fixed bucket (501).

6. The rotary kiln for smelting laterite nickel ore according to claim 5, characterized in that: The telescopic frame (504) includes a fixed base (5041), a guide rod (5042), a movable base (5043), a spring (5044), and a limiting nut (5045). The fixed base (5041) is fixedly connected to the guide rod (5042), and the fixed base (5041) is fixedly installed on the outer surface of the fixed bucket (501). The movable base (5043) is fixed on the movable bucket (503), and the movable base (5044) is fixedly installed on the outer surface of the fixed bucket (501). 3) A through hole is provided. The movable seat (5043) is sleeved on the guide rod (5042) through the through hole. The spring (5044) is sleeved on the guide rod (5042), and the ends of the spring (5044) contact the fixed seat (5041) and the movable seat (5043) respectively. The limiting nut (5045) is threaded to the upper end of the guide rod (5042), and the limiting nut (5045) contacts the movable seat (5043).

7. The rotary kiln for smelting laterite nickel ore according to claim 6, characterized in that: The heat conduction structure (6) also includes a connecting pipe (604), a circulating pump (605), a suction pipe (606), and a delivery pipe (607). The connecting pipe (604) is disposed between the heat absorption pipe (602) and the preheating pipe (603). The circulating pump (605) is fixed on the base frame (1). The suction pipe (606) and the delivery pipe (607) are connected to the circulating pump (605), and the ends of the suction pipe (606) and the delivery pipe (607) are respectively connected to the heat absorption pipe (602) and the preheating pipe (603).

8. The rotary kiln for smelting laterite nickel ore according to claim 7, characterized in that: The feeding structure (9) also includes a feeding hopper (903), which is fixedly connected to the collecting hood (901), and the feeding hopper (903) and the collecting hood (901) are connected.

9. A rotary kiln for smelting laterite nickel ore according to claim 8, characterized in that: The rotary connecting assembly (902) includes a first connecting sleeve (9021), a second connecting sleeve (9022), a connecting groove (9023), a first connecting plate (9024), a second connecting plate (9025), a connecting bolt (9026), a connecting nut (9027), and a clamping bolt (9028). The connecting groove (9023) is formed on the first connecting sleeve (9021) and the second connecting sleeve (9022), and the first connecting sleeve (9021) and the second connecting sleeve (9022) are fitted onto the annular protrusion (8) through the connecting groove (9023). The first connecting plate (9024) and the second connecting plate (9025) are respectively fixed on the first connecting sleeve (9021) and the second connecting sleeve (9022).

10. A rotary kiln for smelting laterite nickel ore according to claim 9, characterized in that: The connecting bolt (9026) passes through the first connecting plate (9024) and the second connecting plate (9025), the connecting nut (9027) is threaded to the lower end of the connecting bolt (9026), the clamping bolt (9028) is threaded to the first connecting sleeve (9021), and the end of the clamping bolt (9028) abuts against the annular protrusion (8).

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