Zinc oxide rotary kiln tail residue recovery device

Abstract

The utility model relates to the technical field of zinc oxide processing equipment, concretely is zinc oxide rotary kiln tail residue recovery device, including kiln cylinder, the bottom position of kiln cylinder discharge end is provided with tail residue recovery mechanism, and tail residue recovery mechanism includes fixed base, guide chute and crushing subassembly, and crushing subassembly includes a pair of crushing roller. The zinc oxide rotary kiln tail residue recovery device, through setting up the guide chute of accomodating unfolding and the crushing subassembly of linking with guide chute, make equipment shutdown maintenance cleaning kiln wall hard block, guide chute can unfold to the just below kiln tail discharge end, and the big piece tail residue of taking out is avoided tail residue scattering, and do not need additional manual cleaning scattered tail residue, and the big piece tail residue of guide chute taking can directly fall into crushing subassembly and carry out crushing processing, and do not need manual tail residue to be transferred to other crushing equipment, and can complete tail residue preliminary treatment in maintenance site, and simplify tail residue processing flow.

Description

Technical Field

[0001] This utility model relates to the technical field of zinc oxide processing equipment, specifically to a zinc oxide rotary kiln tail slag recovery device. Background Technology

[0002] Zinc oxide tailings are solid residues left over from the high-temperature roasting of materials inside the rotary kiln during zinc oxide production. These residues either do not participate in the reaction or cannot volatilize, and are commonly found at the kiln tail discharge stage. Their composition is complex, containing not only small amounts of unrecovered zinc oxide but also gangue, metal oxides, and refractory material debris. These tailings require proper treatment to avoid resource waste and meet environmental protection requirements; they are an industrial byproduct that needs reasonable management in the zinc oxide production sector.

[0003] Utility model patent CN211204874U discloses a rotary kiln support structure and a rotary kiln. This rotary kiln support structure and rotary kiln include a rolling ring fitted onto the kiln body and a support portion disposed on the outer wall of the kiln body. The support portion includes a pad fixed to the outer wall of the kiln body and a baffle fixed to the pad. The pad abuts against the inner wall of the rolling ring, and a gap is left between the baffle and the end face of the rolling ring. Multiple sets of support portions are provided, with two pads in each set. The two pads in each set are symmetrically arranged on both sides of the rolling ring. A secondary support plate is provided between the two pads in the same set, and the secondary support plate is also fixed to the outer wall of the kiln body. The rotary kiln includes the aforementioned rotary kiln support structure. This rotary kiln support structure and rotary kiln can reduce the deformation of the rolling ring and the vibration of the rotary kiln during rotation.

[0004] The rotary kiln support structure and the rotary kiln itself lack a dedicated receiving structure for large pieces of tailings after maintenance and cleaning of the hardened lumps adhering to the kiln wall. Furthermore, there is no connection structure between tailings collection and subsequent processing. This results in large pieces of tailings easily scattering around the equipment when discharged from the kiln tail, requiring additional manual cleaning and increasing workload. Simultaneously, the discharged large pieces of tailings need to be manually transported to other equipment for crushing or recycling. The process is fragmented, making it impossible to complete the initial processing of tailings on-site during maintenance. Therefore, we propose a zinc oxide rotary kiln tailings recycling device. Utility Model Content

[0005] The purpose of this invention is to provide a zinc oxide rotary kiln tailings recovery device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A zinc oxide rotary kiln tailings recovery device includes a kiln cylinder. A tailings recovery mechanism is provided at the bottom of the discharge end of the kiln cylinder. The tailings recovery mechanism is used to receive the tailings discharged from the discharge end of the kiln cylinder. The tailings recovery mechanism includes a fixed base, a guide hopper hinged to the top of the fixed base, and a crushing component provided in the fixed base. A receiving cavity for accommodating the guide hopper is provided on the left end face of the top of the fixed base. When the guide hopper is stored in the receiving cavity, it will not affect the discharge path of the kiln. When the guide hopper is unfolded from the receiving cavity, it is located directly below the discharge end of the kiln. A crushing chamber is provided in the fixed base below the receiving cavity. The crushing assembly includes a pair of crushing rollers. The two crushing rollers are rotatably connected in parallel in the crushing chamber. The tailings received from the guide hopper will fall between the two crushing rollers for crushing. The bottom of the crushing chamber is connected to the right end face of the fixed base and forms a rectangular discharge port. The crushed tailings will be discharged outward from the discharge port of the crushing chamber and the right end face of the fixed base.

[0007] Preferably, a pair of guide plates are provided between the receiving cavity and the crushing cavity. The guide plates gradually slope downward from the outside to the inside. The two guide plates are distributed symmetrically inside the fixed base, and a gap is formed between the two guide plates. The two guide plates separate the feed hopper and the crushing component.

[0008] In this setup, the inclined guide plate guides the tailings towards the center, ensuring that the tailings fall into the crushing assembly.

[0009] Preferably, the top, bottom, and right side faces of the guide hopper are all open, and protruding shafts are provided at the front and rear side edges of the bottom of the guide hopper. The two protruding shafts are respectively embedded in the front and rear side inner walls of the receiving cavity and rotatably connected to the fixed seat.

[0010] In this design, the open end face facilitates the entry and exit of tailings into and out of the guide hopper, and the rotational cooperation between the convex shaft and the fixed seat provides a fulcrum for the guide hopper, enabling the guide hopper to switch between unfolding and retracting.

[0011] Preferably, hydraulic cylinders are installed on both the front and rear edges of the right end face of the fixed seat. The piston rod of the hydraulic cylinder is connected to a push rod, which passes through the fixed seat laterally and is slidably connected to the fixed seat. A hanging shaft is fixed to the end of the push rod. Hanging plates are fixed on both the front and rear edges of the left end face of the guide hopper. A hanging groove is opened on the side end face of the hanging plate along its length direction. The hanging shaft extends into the hanging groove. When the hydraulic cylinder is working, it pushes or pulls the guide hopper to rotate around the convex shaft through the push rod and the hanging shaft.

[0012] In this setup, the hydraulic cylinder provides the driving force, and through the cooperation of the push rod, the hanging shaft and the hanging groove, the linear motion is converted into the rotational motion of the guide hopper.

[0013] Preferably, a guide plate is fixed at the top edge of the left end face of the guide hopper. When the guide hopper is stored in the receiving cavity, the guide plate is located directly below the discharge end of the kiln. At this time, the guide plate is inclined from top to bottom away from the guide hopper. The guide plate is used to guide the normal material discharged from the kiln when the tailings recovery mechanism is not in use.

[0014] In this setup, the guide plate receives normal materials when the guide hopper is collecting them, and the inclined structure guides the materials away from the tailings recycling mechanism, preventing materials from falling into the collection chamber and ensuring that normal production is not affected.

[0015] Preferably, a limiting block is fixed on the left end face of the fixed base, and the limiting block is used to limit the unfolding angle of the guide hopper when it unfolds outward from the receiving cavity.

[0016] In this setting, the limiting block can prevent the guide hopper from opening at too large or too small an angle, ensuring that the guide hopper can completely cover the bottom of the kiln discharge end and guarantee the tailings receiving effect.

[0017] Preferably, the end of the crushing roller is coaxially connected to a gear, the two gears on the two crushing rollers mesh with each other, and the beginning of one of the crushing rollers is coaxially connected to a crushing motor, which is mounted on the front end face of the fixed base.

[0018] In this setup, the crushing motor powers the crushing rollers, and gear meshing ensures that the two crushing rollers rotate synchronously in opposite directions, achieving uniform compression and shearing of the tailings.

[0019] Preferably, a discharge hopper is installed on the right end face of the fixed seat, and the first end of the discharge hopper is fitted onto the bottom of the discharge port formed at the connection between the crushing chamber and the right end face of the fixed seat.

[0020] In this setup, the discharge hopper provides secondary guidance for the crushed tailings, and the nested installation method prevents the tailings from scattering at the connection between the discharge port and the discharge hopper, thus improving the integrity of tailings collection.

[0021] Compared with the prior art, the beneficial effects of this utility model are: This zinc oxide rotary kiln tailings recovery device, by setting up a retractable and expandable guide hopper and a crushing component connected to the guide hopper, allows the guide hopper to expand directly below the kiln tail discharge end when the equipment is stopped for maintenance and cleaning of hardened blocks on the kiln wall. This catches large pieces of tailings to prevent them from scattering, eliminating the need for additional manual cleaning of scattered tailings. Furthermore, the large pieces of tailings caught by the guide hopper can fall directly into the crushing component for crushing, eliminating the need for manual transfer of the tailings to other crushing equipment. The initial treatment of tailings can be completed on-site, simplifying the tailings treatment process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the guide hopper in the deployed state of this utility model; Figure 2 This is a schematic diagram of the overall structure of the guide hopper in the storage state of this utility model; Figure 3 This is a schematic diagram of the tailings recycling mechanism in this utility model; Figure 4 This is a cross-sectional view of the fixing base in this utility model; Figure 5 This is an exploded view of the feed hopper in this utility model; Figure 6 This is a schematic diagram of the crushing component in this utility model; The meanings of the labels in the diagram are as follows: 100. Kiln cylinder; 200. Tailings recycling mechanism; 210. Fixed base; 211. Collection chamber; 212. Guide plate; 213. Crushing chamber; 214. Discharge hopper; 215. Limiting block; 220. Guide hopper; 221. Protruding shaft; 222. Hydraulic cylinder; 2221. Push rod; 2222. Hanging shaft; 223. Hanging plate; 2231. Hanging groove; 224. Guide plate; 2241. Support rod; 230. Crushing assembly; 231. Crushing roller; 2311. Gear; 232. Crushing motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Please see Figures 1-6A zinc oxide rotary kiln tailings recovery device includes a kiln cylinder 100. A tailings recovery mechanism 200 is installed at the bottom of the discharge end of the kiln cylinder 100. The tailings recovery mechanism 200 is used to receive the tailings discharged from the discharge end of the kiln cylinder 100. The tailings recovery mechanism 200 can achieve directional collection and preliminary treatment of the tailings, preventing the tailings from scattering around the equipment. The tailings recovery mechanism 200 includes a fixed base 210, a guide hopper 220 hinged in the top of the fixed base 210, and a crushing component 230 installed in the fixed base 210. The guide hopper 220 guides the tailings discharged from the kiln cylinder 100 into the crushing component 230 for crushing before being discharged from the fixed base 210. The guide hopper 220 can ensure that the tailings are accurately guided to the crushing component 230, and the crushing component 230 can crush large pieces of tailings for subsequent recycling and processing.

[0026] like Figures 1-5 As shown, in this utility model, a receiving cavity 211 for accommodating the guide hopper 220 is provided on the left end face of the top of the fixed base 210. The receiving cavity 211 provides storage space for the guide hopper 220, preventing the guide hopper 220 from occupying extra space or interfering with the normal operation of the equipment when not in use. The top, bottom, and right end faces of the guide hopper 220 are all open. The open end face design ensures that the tailings can smoothly enter the interior of the guide hopper 220 and can be quickly conveyed downwards to the subsequent structure. The front and rear end faces of the bottom of the guide hopper 220 are provided with protruding convex shafts 221. The two convex shafts 221 are respectively embedded in the front and rear inner walls of the receiving cavity 211 and rotatably connected to the fixed base 210. The rotational cooperation between the convex shafts 221 and the fixed base 210 provides a rotation fulcrum for the unfolding and storage of the guide hopper 220, ensuring that the guide hopper 220 can flexibly switch states. Hydraulic cylinders 222 are installed on both the front and rear edges of the right end face of the fixed base 210. A push rod 2221 is connected to the end of the piston rod of the hydraulic cylinder 222. The hydraulic cylinder 222 provides a stable driving force, which moves the push rod 2221 by extending and retracting the piston rod. The push rod 2221 passes laterally through the fixed base 210 and is slidably connected to it. The fixed base 210 provides a sliding guide for the push rod 2221, ensuring stable lateral movement. A hanging shaft 2222 is fixed to the end of the push rod 2221. Hanging plates 223 are fixed on both the front and rear edges of the left end face of the guide hopper 220. A hanging groove 2231 is provided on the side end face of plate 223 along its length direction. The hanging shaft 2222 extends into the hanging groove 2231. The cooperation between the hanging shaft 2222 and the hanging groove 2231 can convert the linear motion of the push rod 2221 into the rotational motion of the guide hopper 220, thereby realizing the unfolding and retraction control of the guide hopper 220. When the hydraulic cylinder 222 is working, it pushes or pulls the guide hopper 220 to rotate around the convex shaft 221 through the push rod 2221 and the hanging shaft 2222. This driving method can accurately control the rotation angle of the guide hopper 220, ensuring that the guide hopper 220 can be accurately moved to directly below the discharge end of the kiln cylinder 100 when needed.

[0027] like Figures 3-5 As shown, specifically, a limiting block 215 is fixed on the left end face of the fixed base 210. The limiting block 215 is used to limit the unfolding angle of the guide hopper 220 when it unfolds outward from the receiving cavity 211. The limiting block 215 can prevent the guide hopper 220 from unfolding too large an angle, which would prevent the tailings from falling in smoothly, or from unfolding too small an angle, which would prevent it from completely covering the area below the discharge end of the kiln 100. When the guide hopper 220 is stored in the receiving cavity 211, the guide hopper 220 will not affect the discharge path of the kiln 100, ensuring that the material can be discharged along the original path when the rotary kiln is running normally, without the need to remove the tailings recovery mechanism 200. When the guide hopper 220 unfolds from the receiving cavity 211, the guide hopper 220 is located directly below the discharge end of the kiln 100. At this time, the guide hopper 220 can completely receive the tailings discharged from the kiln 100, preventing the tailings from scattering.

[0028] like Figure 4 As shown, furthermore, a crushing chamber 213 is provided in the fixing seat 210 below the receiving cavity 211. The crushing chamber 213 provides installation space for the crushing component 230 and can also accommodate the tailings to be crushed, preventing the tailings from overflowing during the crushing process. A pair of guide plates 212 are provided between the receiving cavity 211 and the crushing chamber 213. The guide plates 212 gradually slope downward from the outside to the inside. The inclined guide plates 212 can guide the tailings discharged from the feed hopper 220 to converge towards the center, ensuring that the tailings fall accurately into the crushing component 230. In the middle; two guide plates 212 are symmetrically distributed inside the fixed base 210, and a gap is formed between the two guide plates 212. The size of the gap is adapted to the feeding requirements of the crushing component 230, which can prevent the tail residue from accumulating above the guide plates 212. The two guide plates 212 separate the feed hopper 220 and the crushing component 230, which can prevent the dust or debris generated by the crushing component 230 during operation from drifting upward to the feed hopper 220 area, and at the same time prevent the tail residue in the feed hopper 220 from directly impacting the crushing component 230.

[0029] like Figure 4 and Figure 6As shown, the crushing assembly 230 includes a pair of crushing rollers 231. The two crushing rollers 231 are rotatably connected in parallel within the crushing chamber 213. The parallel crushing rollers 231 can uniformly squeeze and shear the tailings, thereby crushing large pieces of tailings. Gears 2311 are coaxially connected to the ends of the crushing rollers 231. The two gears 2311 on the two crushing rollers 231 mesh with each other. The meshing transmission of the gears 2311 can ensure that the two crushing rollers 231 rotate synchronously in opposite directions, so that the crushing roller 231 on the left rotates clockwise and the crushing roller 231 on the right rotates counterclockwise, thereby improving crushing efficiency and crushing uniformity. A crushing motor 232 is coaxially connected to the head end of one of the crushing rollers 231. The crushing motor 232 is mounted on the front end face of the fixed base 210. The crushing motor 232 provides rotational power to the crushing roller 231, and the fixed base 210 provides stable support for the crushing motor 232. The tailings received from the feed hopper 220 fall between two crushing rollers 231 for crushing, ensuring that the tailings are reduced in size after crushing, which facilitates subsequent recycling processes. The bottom of the crushing chamber 213 is connected to the right end face of the fixed seat 210 and forms a rectangular discharge port. The rectangular discharge port design ensures that the crushed tailings are discharged quickly and smoothly, avoiding accumulation in the crushing chamber 213. The crushed tailings are discharged outward from the discharge port on the right end face of the crushing chamber 213 and the fixed seat 210, realizing the directional conveying of the crushed tailings and providing convenience for subsequent recycling steps.

[0030] like Figure 3 and Figure 5 As shown, it is worth noting that a guide plate 224 is fixed at the top edge of the left end face of the guide hopper 220. Several support rods 2241 are tightly welded between the guide plate 224 and the guide hopper 220. The guide plate 224 can assist in guiding normal materials when the guide hopper 220 is being stored, preventing materials from falling into the receiving cavity 211. When the guide hopper 220 is stored in the receiving cavity 211, the guide plate 224 is located directly below the discharge end of the kiln cylinder 100. At this time, the guide plate 224 is inclined from top to bottom, gradually moving away from the guide hopper 220. The inclined structure can ensure that normal materials are discharged along the guide plate 224 in a direction away from the tailings recovery mechanism 200, and are separated from the tailings treatment path. The guide plate 224 is used to guide the normal materials discharged from the kiln cylinder 100 when the tailings recovery mechanism 200 is not in use, ensuring that the material conveying is not affected during normal production of the rotary kiln, and realizing that tailings recovery and normal production do not interfere with each other.

[0031] like Figure 4As shown, it should be added that a discharge hopper 214 is installed on the right end face of the fixed base 210. The discharge hopper 214 can provide secondary guidance for the crushed tailings discharged from the discharge port, ensuring that the tailings are accurately transported to the subsequent recycling equipment or storage device. The first end of the discharge hopper 214 is fitted at the bottom of the discharge port formed at the connection between the crushing chamber 213 and the right end face of the fixed base 210. The fitted installation method can prevent the tailings from scattering at the connection between the discharge port and the discharge hopper 214, and improve the integrity of the tailings collection.

[0032] It is worth noting that the crushing motor 232 involved in this utility model is a conventional technology and will not be described in detail here.

[0033] In this embodiment, the zinc oxide rotary kiln tail slag recovery device is used by first determining whether to activate the tail slag recovery function based on usage requirements: If it is necessary to clean the hardened blocks adhering to the inner wall of the kiln cylinder 100 and recover the tail slag, the hydraulic cylinder 222 is activated. The hydraulic cylinder 222 pushes the push rod 2221 to move laterally through the piston rod. The push rod 2221 drives the hanging shaft 2222 to slide in the hanging groove 2231 of the hanging plate 223, thereby pushing the guide hopper 220 to expand outward from the receiving cavity 211 around the convex shaft 221 until the guide hopper 220 abuts the limiting block 215. At this time, the guide hopper 220 is stably located directly below the discharge end of the kiln cylinder 100. Then, the crushing motor 232 is activated. The crushing motor 232 drives the crushing roller 231 connected to it to rotate. The crushing roller 231 drives another crushing roller 231 to rotate synchronously in the opposite direction through the meshing transmission of the gear 2311, so that the crushing assembly 23 0 is in standby mode; then, during the rotation of the kiln cylinder 100, the large pieces of tailings generated during cleaning are discharged from the discharge end of the kiln cylinder 100 and fall into the guide hopper 220. The tailings move downward along the guide hopper 220, and after being guided and gathered by the guide plate 212, they fall precisely between the two crushing rollers 231. They are crushed by the squeezing and shearing action of the crushing rollers 231. Finally, the crushed tailings are discharged from the rectangular discharge port at the bottom of the crushing chamber 213, and after being guided by the discharge hopper 214, they are transported to the subsequent recycling equipment or storage device to complete the recycling of tailings. If it is not necessary to recycle tailings, the hydraulic cylinder 222 is started to drive the push rod 2221 to move in the opposite direction, pulling the guide hopper 220 around the convex shaft 221 and storing it in the storage chamber 211. At this time, the guide plate 224 is located directly below the discharge end of the kiln cylinder 100, guiding the normal material to be discharged along the guide plate 224 to ensure the normal production of the rotary kiln.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A zinc oxide rotary kiln tailings recovery device, comprising a kiln cylinder (100), characterized in that: A tailings recovery mechanism (200) is provided at the bottom of the discharge end of the kiln (100). The tailings recovery mechanism (200) is used to receive the tailings discharged from the discharge end of the kiln (100). The tailings recovery mechanism (200) includes a fixed base (210), a guide hopper (220) hinged in the top of the fixed base (210), and a crushing assembly (230) provided in the fixed base (210). The top left end face of the fixed base (210) is provided with a receiving cavity (211) for accommodating the guide hopper (220). When the guide hopper (220) is stored in the receiving cavity (211), the guide hopper (220) will not affect the discharge path of the kiln cylinder (100). When the guide hopper (220) unfolds from the receiving cavity (211), the guide hopper (220) is located directly below the discharge end of the kiln cylinder (100). The fixed base (210) below the receiving cavity (211) is provided with a crushing chamber (…). 213), The crushing assembly (230) includes a pair of crushing rollers (231). The two crushing rollers (231) are rotatably connected in parallel in the crushing chamber (213). The tailings received from the guide hopper (220) will fall between the two crushing rollers (231) for crushing. The bottom of the crushing chamber (213) is connected to the right end face of the fixed seat (210) and forms a rectangular discharge port. The crushed tailings will be discharged outward from the discharge port on the right end face of the crushing chamber (213) and the fixed seat (210).

2. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: A pair of guide plates (212) are provided between the receiving cavity (211) and the crushing cavity (213). The guide plates (212) gradually tilt downward from the outside to the inside. The two guide plates (212) are distributed symmetrically inside the fixed base (210). A gap is formed between the two guide plates (212). The two guide plates (212) separate the feed hopper (220) and the crushing component (230).

3. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: The top, bottom and right sides of the guide hopper (220) are open. The front and rear sides of the bottom of the guide hopper (220) are provided with protruding shafts (221). The two shafts (221) are respectively embedded in the inner walls of the front and rear sides of the receiving cavity (211) and rotatably connected to the fixed seat (210).

4. The zinc oxide rotary kiln tailings recovery device according to claim 3, characterized in that: Hydraulic cylinders (222) are installed on the front and rear edges of the right side end face of the fixed seat (210). The piston rod of the hydraulic cylinder (222) is connected to a push rod (2221). The push rod (2221) passes through the fixed seat (210) laterally and is slidably connected to the fixed seat (210). The end of the push rod (2221) is fixed with a hanging shaft (2222). The front and rear edges of the left side end face of the guide hopper (220) are fixed with a hanging plate (223). A hanging groove (2231) is opened on the side end face of the hanging plate (223) along its length direction. The hanging shaft (2222) extends into the hanging groove (2231). When the hydraulic cylinder (222) is working, it pushes or pulls the guide hopper (220) to rotate around the convex shaft (221) through the push rod (2221) and the hanging shaft (2222).

5. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: A guide plate (224) is fixed at the top edge of the left end face of the guide hopper (220). When the guide hopper (220) is stored in the receiving cavity (211), the guide plate (224) is located directly below the discharge end of the kiln cylinder (100). At this time, the guide plate (224) is inclined from top to bottom away from the guide hopper (220). The guide plate (224) is used to guide the normal material discharged from the kiln cylinder (100) when the tailings recovery mechanism (200) is not in use.

6. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: A limiting block (215) is fixed on the left end face of the fixed base (210). The limiting block (215) is used to limit the unfolding angle of the guide hopper (220) when it unfolds outward from the receiving cavity (211).

7. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: The end of the crushing roller (231) is coaxially connected to a gear (2311), and the two gears (2311) on the two crushing rollers (231) mesh with each other. The head end of one of the crushing rollers (231) is coaxially connected to a crushing motor (232), and the crushing motor (232) is mounted on the front end face of the fixed base (210).

8. The zinc oxide rotary kiln tailings recovery device according to claim 1, characterized in that: The right end face of the fixed seat (210) is equipped with a discharge hopper (214), and the first end of the discharge hopper (214) is sleeved at the bottom of the discharge port formed at the connection between the crushing chamber (213) and the right end face of the fixed seat (210).

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