Grinding device for red mud treatment

Abstract

The utility model relates to a grinding device for red mud treatment, which comprises a grinding box, and a first treatment space and a second treatment space which are adjacent to each other are defined in the grinding box through a partition plate; a first feeding port and a first discharging port are formed in the top and the bottom of the first treatment space respectively, a pair of guide plates, a pair of grinding rollers and a screening part are sequentially arranged between the first feeding port and the first discharging port from top to bottom, and first heating pipes are installed in roller shafts of the grinding rollers and externally connected with a power source through electric sliding rings connected with the roller shafts; a grinding disc and a grinding block matched with the grinding disc are arranged in the second treatment space, a grinding gap is formed between the grinding disc and the grinding block, a second discharging opening is formed in the bottom of the grinding disc, and a second heating pipe is arranged in the grinding disc; a second feeding hole is formed in a partition plate between the inclined lower end of the screening part and the top of the grinding disc, so that red mud on the screening part can roll to the grinding gap. According to the grinding device, grinding and drying are well fused, and a good grinding effect is achieved by combining two-stage treatment.

Description

Technical Field

[0001] The utility model relates to the field of red mud treatment, in particular to a grinding device for red mud treatment. Background Art

[0002] Red mud is a polluting waste residue discharged during the extraction of alumina in the aluminum industry. When recycling red mud, it needs to be sun-dried and ground. Existing grinding equipment generally grinds by setting grinding rollers. However, for the dried lumpy red mud, it still contains some moisture, and it is difficult to achieve a good grinding effect by simple grinding. Therefore, some people improve it by adding a drying component to the grinding equipment. However, the added drying component is separately arranged from the grinding structure, and the cooperation between the two is poor, resulting in an insufficiently obvious improvement in the grinding effect. Summary of the Utility Model

[0003] In order to make up for the deficiencies of the prior art, the utility model provides a grinding device for red mud treatment, which achieves a good grinding effect by better integrating grinding and drying and combining two-stage treatment.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0005] A grinding device for red mud treatment includes a grinding box, and adjacent first treatment space and second treatment space are enclosed in the grinding box by a partition board;

[0006] A first feed inlet and a first discharge outlet are respectively arranged at the top and bottom of the first treatment space. Between the first feed inlet and the first discharge outlet, a pair of guide plates, a pair of grinding rollers and a screening member are successively arranged from top to bottom. A first heating pipe is installed in the roller shaft of the grinding roller, and the first heating pipe is externally connected to a power source through a slip ring connected to the roller shaft;

[0007] A grinding disc and a grinding block cooperating with the grinding disc are arranged in the second treatment space. A grinding gap is formed between the grinding disc and the grinding block. A second discharge outlet communicating with the grinding gap is arranged at the bottom of the grinding disc, and a second heating pipe is arranged in the grinding disc;

[0008] The screening member is inclined, and a second feed inlet is arranged on the partition board between the inclined lower end of the screening member and the top of the grinding disc, so that the red mud on the screening member can roll towards the grinding gap.

[0009] Further, grinding protrusions are arranged on the surface of the grinding roller.

[0010] Further, a conveyor belt corresponding to the first discharge outlet and the second discharge outlet is arranged below the grinding box, and skirt edges are arranged on both sides of the conveyor belt.

[0011] Further, the screening member includes a positioning frame, a screening mesh is connected to the positioning frame through a spring, and a vibrator is provided between the screening mesh and the positioning frame.

[0012] Further, the first processing space below the screening member is tapered from the side wall towards the first discharge port.

[0013] Further, an insertion interface is provided on one side of the grinding box corresponding to the screening member for cooperation therewith.

[0014] Further, a feed hopper is externally connected to the feed port of the grinding box.

[0015] Further, the grinding block is spindle-shaped.

[0016] Adopting the above technical solutions, the advantages of the present utility model are as follows: for this grinding device for red mud treatment, by providing a guide plate, grinding rollers and a screening member in the first processing space, preliminary grinding and screening of red mud can be achieved. By providing a first heating pipe inside the grinding roller, heat can be quickly and evenly transferred to the ground red mud, which helps to significantly improve the grinding effect. Through the coordinated arrangement of the first processing space and the second processing space, the large pieces of screened red mud can be introduced into the second processing space for continuous grinding. The provided second heating pipe can quickly and evenly transfer heat to the red mud, achieving a good grinding effect, and thus completing the red mud grinding operation better.

[0017] Through the coordinated arrangement of the conveyor belt and the grinding box, the conveying of the ground powder can be better realized. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of one embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a cross-sectional view of.

[0020] In the figure, 1. Grinding box, 2. Partition board, 3. First processing space, 4. Second processing space, 5. First feed port, 6. First discharge port, 7. Guide plate, 8. Grinding roller, 9. Screening member, 10. First heating pipe, 11. Grinding disc, 12. Grinding block, 13. Grinding gap, 14. Second discharge port, 15. Second heating pipe, 16. Second feed port, 17. Conveyor belt, 18. Skirt, 19. Feed hopper. Detailed Embodiment

[0021] To clearly illustrate the technical features of this solution, the following will elaborate on the present utility model in detail through specific embodiments and in conjunction with the drawings. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0022] As Figure 1-2 shown, in this embodiment, the grinding device for red mud treatment includes a grinding box 1. Inside the grinding box 1, adjacent first treatment space 3 and second treatment space 4 are enclosed by a partition 2. At the top and bottom of the first treatment space 3, a first feed inlet 5 and a first discharge outlet 6 are respectively provided. Between the first feed inlet 5 and the first discharge outlet 6, a pair of guide plates 7, a pair of grinding rollers 8, and a screening member 9 are successively arranged from top to bottom. A first heating tube 10 is installed in the roller shaft of the grinding roller 8, and the first heating tube 10 is externally connected to a power source through a slip ring connected to the roller shaft. In this way, the grinding roller can be driven to rotate by the cooperation of a motor and gears without affecting heating. Inside the second treatment space 4, a grinding disc 11 and a grinding block 12 cooperating with it are provided. A grinding gap 13 is formed between the grinding disc 11 and the grinding block 12. At the bottom of the grinding disc 11, a second discharge outlet 14 communicating with the grinding gap 13 is provided. A second heating tube 15 is provided inside the grinding disc 11. The screening member 9 is inclined, and a second feed inlet 16 is provided on the partition 2 between the inclined lower end of the screening member 9 and the top of the grinding disc 11, so that the red mud on the screening member 9 can roll towards the grinding gap 13.

[0023] Working principle: First, the untreated red mud enters the first treatment space 3 from the first feed inlet 5. Under the action of the guide plates 7, it falls between the two grinding rollers 8. Under the mutual grinding and extrusion action of the grinding rollers 8 and the heat transfer action of the first heating tube 10, the red mud can be preferably preliminarily ground. The fine materials obtained by grinding will pass through the screening member 9 and fall to the first discharge outlet 6, and the coarse materials will remain on the screening member 9. Since the screening member 9 is inclined, the coarse materials will roll into the second treatment space 4 through the second feed inlet 16 and gradually enter the grinding gap 13, and are ground into fine materials under the action of the grinding disc 11 and the grinding block. Among them, the second heating tube 15 can provide better heat to the red mud during the grinding process and assist the red mud to preferably complete the grinding process. The cooperation of the two treatment steps can enable the red mud to achieve a better grinding effect.

[0024] Regarding the two grinding rollers, they can be Figure 1The gear set and the motor cooperate to achieve driving; regarding the grinding block, the motor on it can drive it to rotate.

[0025] In one embodiment, the surface of the grinding roller 8 is provided with grinding protrusions, which can assist in increasing the grinding effect.

[0026] In one embodiment, a conveyor belt 17 corresponding to the first discharge port 6 and the second discharge port 16 is provided below the grinding box 1. Skirts 18 are provided on both sides of the conveyor belt 17, which can facilitate the timely transfer of the ground powder.

[0027] In one embodiment, the screening member 9 includes a positioning frame. A screening net is connected to the positioning frame through a spring, and a vibrator is provided between the screening net and the positioning frame. With such a setting, it can screen better and assist the coarse material to roll towards the second processing space.

[0028] In one embodiment, the first processing space below the screening member 9 is tapered from the side wall towards the first discharge port to facilitate discharging.

[0029] In one embodiment, an insertion port is provided on one side of the grinding box corresponding to the screening member 9 for facilitating the removal of the screening member for cleaning and replacement.

[0030] In one embodiment, a feed hopper 19 is externally connected to the feed inlet of the grinding box 1.

[0031] In one embodiment, the grinding block 12 is spindle-shaped to facilitate the smooth entry of red mud into the grinding gap 13.

[0032] The above specific embodiments cannot be used as a limitation to the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0033] Where the present invention is not described in detail, it is common knowledge for those skilled in the art of this technology.

Claims

1. A grinding device for red mud treatment, characterized in that, It includes a grinding box, and adjacent first processing space and second processing space are enclosed within the grinding box by a partition board; A first feed inlet and a first discharge outlet are respectively provided at the top and bottom of the first processing space. Between the first feed inlet and the first discharge outlet, a pair of guide plates, a pair of grinding rollers and a screening member are sequentially arranged from top to bottom. A first heating tube is installed in the roller shaft of the grinding roller, and the first heating tube is externally connected to a power source through a slip ring connected to the roller shaft; A grinding disc and a grinding block cooperating with the grinding disc are provided in the second processing space. A grinding gap is formed between the grinding disc and the grinding block. A second discharge outlet communicating with the grinding gap is provided at the bottom of the grinding disc, and a second heating tube is provided in the grinding disc; The screening member is inclined, and a second feed inlet is provided on the partition board between the inclined lower end of the screening member and the top of the grinding disc, so that the red mud on the screening member can roll towards the grinding gap.

2. The grinding device for red mud treatment according to claim 1, characterized in that, The surface of the grinding roller is provided with grinding protrusions.

3. The grinding device for red mud treatment according to claim 1, characterized in that, A conveyor belt corresponding to the first discharge outlet and the second discharge outlet is provided below the grinding box, and skirt edges are provided on both sides of the conveyor belt.

4. The grinding device for red mud treatment according to claim 1, characterized in that, The screening member includes a positioning frame, a screening net is connected to the positioning frame through a spring, and a vibrator is provided between the screening net and the positioning frame.

5. The grinding device for red mud treatment according to claim 1, wherein, The first processing space below the screening member is provided with a converging opening from the side wall towards the first discharge outlet.

6. The grinding device for red mud treatment according to claim 5, characterized in that: An insertion port cooperating with the screening member is provided on one side of the grinding box corresponding to the screening member.

7. The grinding device for red mud treatment according to claim 1, characterized in that, A feed hopper is externally connected to the feed inlet of the grinding box.

8. The grinding device for red mud treatment according to claim 1, characterized in that The grinding block is spindle-shaped.

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