A drying feeding device for recovering valuable metals from red mud

Abstract

The utility model provides a kind of drying feed device for recycling valuable metal in red mud, it is related to red mud recycling technical field.The utility model includes feedway, its bottom is communicated with dryer, hopper is located at the top of feedway, at least one group of material ramming mechanism is located in feedway, the material ramming mechanism includes the drive rod rotationally arranged in feedway, multiple material ramming units are equipped on the drive rod, the material ramming unit includes multiple material ramming rods, which are arranged along the radial direction of the drive rod, multiple material ramming components are equipped on the material ramming rod.The utility model carries out to break and scatter red mud into dryer, improve the specific surface area of red mud, improve red mud drying efficiency and drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of red mud recycling technology, specifically to a drying and feeding device for recycling valuable metals from red mud. Background Technology

[0002] Red mud, also known as red clay, is an industrial solid waste discharged after extracting alumina from bauxite. It generally contains a high amount of iron oxide and resembles reddish soil in appearance, hence its name. However, some varieties contain less iron oxide and are brown or even grayish-white. Red mud is an insoluble residue and can be classified into sintering red mud, Bayer process red mud, and combined process red mud. Its main components are SiO2, Al2O3, CaO, and Fe2O3.

[0003] In existing technologies, when recovering valuable metals from red mud, the process includes pretreatment, leaching, solid-liquid separation, and purification and enrichment. The pretreatment includes drying the red mud. Currently, during drying, the recovered red mud is in block form with a small specific surface area. Directly putting it into the dryer results in low drying efficiency. Furthermore, while the outside is being dried, the inside remains undried, leading to a long overall drying time, low efficiency, and uneven drying. Utility Model Content

[0004] The purpose of this invention is to develop a drying feeder for recovering valuable metals from red mud that crushes and disperses the red mud entering the dryer, thereby increasing the specific surface area of ​​the red mud and improving the drying efficiency and uniformity of the red mud.

[0005] This utility model is achieved through the following technical solution:

[0006] A drying and feeding device for recovering valuable metals from red mud includes:

[0007] The feed duct is connected at its bottom to the dryer;

[0008] The hopper is located at the top of the feed channel;

[0009] At least one set of tamping mechanism is located in the feed channel;

[0010] The material tamping mechanism includes a drive rod rotatably disposed in the feed channel. The drive rod is provided with multiple sets of material tamping units. Each material tamping unit includes multiple material tamping rods arranged radially on the drive rod, and multiple material tamping components are provided on each material tamping rod.

[0011] Optionally, the drive rod is horizontally positioned, and multiple sets of tamping units on the drive rod are equally spaced.

[0012] Optionally, the multiple tamping rods in the tamping unit are arranged at equal intervals in the circumferential direction of the drive rod.

[0013] Optionally, when multiple sets of tamping mechanisms are provided in the feed channel, the drive rods of the multiple sets of tamping mechanisms are connected by transmission wheels or belts, and a motor connected to the feed channel on the side of one of the drive rods is provided.

[0014] Optionally, the tamping assembly is evenly arranged on the tamping rod, the tamping assembly includes a support rod provided on the tamping rod, the support rod is provided with a tamping frame, and a plurality of crushing rods are connected between the tamping frame and the support rod.

[0015] Optionally, the support rod is set perpendicular to the tamping rod, the tamping frame has a rectangular frame structure, the support rod is parallel to the two long sides of the tamping frame and connected to the middle of the two short sides of the tamping frame, and multiple crushing rods are arranged at equal intervals on the support rod inside the tamping frame, the crushing rods are perpendicular to the support rods and their two ends are respectively perpendicularly connected to the two long sides of the tamping frame.

[0016] Optionally, the feed channel is further provided with a transmission mechanism that cooperates with the tamping mechanism. The transmission mechanism includes a first bevel gear located around the drive rod and coaxially arranged therewith. The first bevel gear is fixedly arranged. The tamping rod is rotatably arranged on the drive rod. A second bevel gear that meshes with the first bevel gear is coaxially connected to the tamping rod.

[0017] Optionally, the drive rod is provided with one more fixing block than the tamping unit, and the multiple tamping units are respectively located between two adjacent fixing blocks. The fixing block is provided with a through hole for the drive rod to pass through, and the first bevel gear is located on the fixing block on one side of the tamping unit.

[0018] Optionally, two fixed blocks at both ends of the drive rod are fixedly connected to the side wall of the feed channel, and other fixed blocks are connected to connecting rods that are perpendicular to the drive rod. The top of the connecting rod is connected to a support rod that is connected to the feed channel.

[0019] Optionally, a sealing ring is provided outside the drive rod at the tamping unit. The sealing ring and the drive rod are coaxial. The sealing ring is rotatably sealed to the fixing blocks on both sides of the tamping unit. The tamping rod is rotatably sealed to the sealing ring.

[0020] The beneficial effects of this utility model are:

[0021] This invention features two sets of tamping mechanisms that crush and disperse the red mud before it enters the dryer. This disperses the red mud into granular form before it enters the dryer, significantly increasing its specific surface area and improving drying efficiency. Furthermore, even the internal parts of the previously difficult-to-dry lumpy red mud can be dried quickly, avoiding problems such as localized incomplete drying or low drying efficiency, and improving the uniformity of drying. The tamping rods of the tamping mechanism rotate simultaneously in their circular motion, driving the tamping components to thoroughly and efficiently crush and disperse the red mud. The support rods and connecting rods not only fix the blocks in place but also work in conjunction with the tamping mechanism to cut and crush the red mud, further improving the crushing effect and efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of the present utility model;

[0024] Figure 2 This is a diagram of the internal structure of the fixed block.

[0025] Reference numerals in the attached drawings: 1. Feed channel; 2. Hopper; 3. Support rod; 4. Connecting rod; 5. Fixing block; 6. Motor; 7. Tamping rod; 8. Sealing ring; 9. Drive rod; 10. First bevel gear; 11. Support rod; 12. Tamping frame; 13. Crushing rod; 14. Second bevel gear. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of this invention, 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," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, this utility model discloses a drying and feeding device for recovering valuable metals from red mud, including a feeding channel 1, a hopper 2 at the top of the feeding channel 1, and a dryer at the bottom of the feeding channel 1. Two sets of vertically arranged tamping mechanisms are provided in the feeding channel 1. After the lumpy red mud enters the hopper 2, it falls into the feeding channel 1 and is crushed and dispersed by the two sets of tamping mechanisms, thereby increasing the specific surface area of ​​the red mud entering the dryer, so as to fully dry the red mud and improve the drying effect.

[0030] The material tamping mechanism includes a drive rod 9 that is horizontally rotatable in the feed channel 1. Three sets of material tamping units are equally spaced on the drive rod 9. Each material tamping unit includes four material tamping rods 7 arranged radially on the drive rod 9. The four material tamping rods 7 are equally spaced in the circumferential direction of the drive rod 9.

[0031] Multiple tamping components are evenly arranged on the tamping rod 7. Each tamping component includes a support rod 11 that is perpendicularly connected to the tamping rod 7. A tamping frame 12 is provided on the support rod 11. The tamping frame 12 has a rectangular frame structure. The support rod 11 is parallel to the two long sides of the tamping frame 12 and is connected to the middle of the two short sides of the tamping frame 12. Multiple crushing rods 13 are provided on the support rod 11 inside the tamping frame 12. The multiple crushing rods 13 are arranged at equal intervals on the support rod 11 inside the tamping frame 12. The crushing rods 13 are perpendicular to the support rod 11 and their two ends are perpendicularly connected to the two long sides of the tamping frame 12, respectively.

[0032] The drive rods 9 of the two tamping mechanisms are arranged in parallel. The ends of the two drive rods 9 on the outer side wall of the feed channel 1 are coaxially connected to the transmission wheels. The two transmission wheels are connected by belt drive or by transmission chain drive. When the transmission chain is connected, the two transmission wheels are corresponding to sprockets, so as to realize the synchronous movement of the two drive rods 9. A motor 6 is provided on the outer wall of the feed channel 1 on the side of one of the tamping mechanisms and is connected to its drive rod 9. The operation of the motor 6 makes the two drive rods 9 rotate synchronously.

[0033] The feed channel 1 is also equipped with a transmission mechanism that cooperates with the tamping mechanism. The transmission mechanism can cause the tamping rod 7 to rotate when the drive rod 9 rotates. The transmission mechanism includes a cylindrical fixing block 5 sleeved on the outside of the drive rod 9. Since the drive rod 9 is equipped with multiple sets of tamping units, in order to avoid the fixing blocks 5 interfering with the rotation of the tamping units, multiple fixing blocks 5 are sleeved on the drive rod 9. The number of fixing blocks 5 is one more than the number of tamping units. For example, in this embodiment, there are three sets of tamping units. Therefore, in this embodiment, four fixing blocks 5 are sleeved on the drive rod 9. The three sets of tamping units rotate between two adjacent fixing blocks 5. The two fixing blocks 5 at both ends of the drive rod 9 are connected to the inner wall of the feed channel 1 for fixation. The two middle fixing blocks 5 are equipped with support rods 3 above them. The support rods 3 are connected to the inner wall of the feed channel 1. The bottom of the support rods 3 is equipped with connecting rods 4 that are connected to the two middle fixing blocks 5 to fix them. The support rod 3 can also be positioned below the fixed block 5 or between two adjacent tamping mechanisms. The distance between the support rod 3 and the fixed block 5 should be greater than the range of motion of the tamping mechanism to avoid interference.

[0034] The drive rod 9 is coaxially arranged with multiple fixed blocks 5, and the fixed blocks 5 have through holes coaxially opened for the drive rod 9 to pass through. A first bevel gear 10 is provided on the side wall of the fixed block 5 on one side of the tamping unit. The first bevel gear 10 is located around the drive rod 9 and the two are coaxial. A second bevel gear 14 is coaxially connected to each of the four tamping rods 7 within the tamping unit on the side of the first bevel gear 10. The second bevel gear 14 meshes with the first bevel gear 10, and the tamping rods 7 are rotatably mounted on the drive rod 9. When the drive rod 9 rotates, driving the tamping rods 7 to rotate in a circular motion, the second bevel gear 14 on the tamping rod 7 rolls on the first bevel gear 10, causing the tamping rod 7 to rotate and drive the multiple tamping components to rotate as well. To avoid motion interference, only one side of the tamping unit needs to have the first bevel gear 10. Sufficient clearance is reserved between the fixed block 5 on the other side of the tamping unit and the second bevel gear 14 to prevent contact between the second bevel gear 14 and the second bevel gear 14, thus avoiding motion interference or friction.

[0035] A sealing ring 8 is also provided outside the drive rod 9 at the tamping unit. The sealing ring 8 and the drive rod 9 are coaxial. The sealing ring 8 is rotatably sealed to the fixing blocks 5 on both sides of the tamping unit. The tamping rod 7 is rotatably sealed to the sealing ring 8. The sealing ring 8 rotates with the movement of the tamping rod 7, and the sealing ring 8 prevents red mud from entering the space where the first bevel gear 10 and the second bevel gear 14 move.

[0036] The two sets of tamping mechanisms in this invention crush and disperse the red mud before it enters the dryer, causing it to spread out into granular form before entering the dryer. This significantly increases the specific surface area of ​​the red mud, improving drying efficiency. Furthermore, the internal parts of the previously difficult-to-dry lumpy red mud can be dried quickly, avoiding problems such as localized incomplete drying or low drying efficiency, and improving the uniformity of drying. The tamping rod 7 of the tamping mechanism rotates on its own axis while rotating in a circular motion, driving the tamping components to thoroughly and efficiently crush and disperse the red mud. The support rod 3 and connecting rod 4 not only fix the fixing block 5 but also work in conjunction with the tamping mechanism to cut and crush the red mud, further improving the crushing effect and efficiency.

[0037] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A drying and feeding device for recovering valuable metals from red mud, characterized in that, include: The feed duct is connected at its bottom to the dryer; The hopper is located at the top of the feed channel; At least one set of tamping mechanism is located in the feed channel; The material tamping mechanism includes a drive rod rotatably disposed in the feed channel. The drive rod is provided with multiple sets of material tamping units. Each material tamping unit includes multiple material tamping rods arranged radially on the drive rod, and multiple material tamping components are provided on each material tamping rod.

2. The drying and feeding device for recovering valuable metals from red mud according to claim 1, characterized in that, The drive rod is set horizontally, and multiple sets of tamping units on the drive rod are set at equal intervals.

3. The drying and feeding device for recovering valuable metals from red mud according to claim 1, characterized in that, The multiple tamping rods in the tamping unit are arranged at equal intervals along the circumference of the drive rod.

4. The drying and feeding device for recovering valuable metals from red mud according to claim 1, characterized in that, When multiple sets of tamping mechanisms are provided in the feed channel, the drive rods of the multiple sets of tamping mechanisms are connected by transmission wheels or belts, and a motor connected to the feed channel on the side of one of the drive rods is provided.

5. The drying and feeding device for recovering valuable metals from red mud according to claim 1, characterized in that, The tamping assembly is evenly arranged on the tamping rod. The tamping assembly includes a support rod on the tamping rod, a tamping frame is provided on the support rod, and multiple crushing rods are connected between the tamping frame and the support rod.

6. The drying and feeding device for recovering valuable metals from red mud according to claim 5, characterized in that, The support rod is set perpendicular to the tamping rod. The tamping frame has a rectangular frame structure. The support rod is parallel to the two long sides of the tamping frame and is connected to the middle of the two short sides of the tamping frame. Multiple crushing rods are arranged at equal intervals on the support rod inside the tamping frame. The crushing rod is perpendicular to the support rod and its two ends are respectively perpendicular to the two long sides of the tamping frame.

7. The drying and feeding apparatus for recovering valuable metals from red mud according to any one of claims 1 to 6, characterized in that, The feed channel is also equipped with a transmission mechanism that cooperates with the tamping mechanism. The transmission mechanism includes a first bevel gear located around the drive rod and coaxially arranged therewith. The first bevel gear is fixedly arranged. The tamping rod is rotatably arranged on the drive rod. A second bevel gear that meshes with the first bevel gear is coaxially connected to the tamping rod.

8. The drying and feeding device for recovering valuable metals from red mud according to claim 7, characterized in that, The drive rod is provided with one more fixing block than the tamping unit. The multiple tamping units are respectively located between two adjacent fixing blocks. The fixing blocks are provided with through holes for the drive rod to pass through. The first bevel gear is located on the fixing block on one side of the tamping unit.

9. The drying and feeding device for recovering valuable metals from red mud according to claim 8, characterized in that, Two fixed blocks at both ends of the drive rod are fixedly connected to the side wall of the feed channel, and a connecting rod perpendicular to the drive rod is connected to the other fixed blocks. The top of the connecting rod is connected to a support rod connected to the feed channel.

10. The drying and feeding device for recovering valuable metals from red mud according to claim 9, characterized in that, A sealing ring is provided on the outside of the drive rod at the tamping unit. The sealing ring and the drive rod are coaxial. The sealing ring is rotatably sealed to the fixing blocks on both sides of the tamping unit. The tamping rod is rotatably sealed to the sealing ring.

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