Crushing device for filtered red mud
By introducing heating and crushing components into the red mud post-filtration crushing device, the stickiness problem caused by the high moisture content of the red mud material was solved, efficient and fine crushing and mixing were achieved, and the process efficiency and quality of red mud treatment were improved.
Patent Information
- Application Number
- CN202422550868.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-22
AI Technical Summary
Existing crushing equipment cannot effectively process red mud materials with high moisture content, resulting in serious sticking phenomenon, affecting crushing efficiency and mixing uniformity.
A red mud post-filtration crushing device was designed, which includes a heating chamber, a crushing assembly and a screening assembly. The red mud material is evenly heated by a heating plate and a guide vane, and is crushed twice using a crushing roller and a rolling roller. Screening is performed in combination with a screen and an eccentric wheel to achieve efficient and fine crushing.
The heating uniformity and crushing efficiency of the red mud material are improved, the continuity and uniformity of the mixing process are ensured, the sticking phenomenon of the equipment is avoided, and the practicality of the crushing device is improved.
Smart Images
Figure CN223337479U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of red mud treatment, in particular to a red mud post-filtration crushing device. Background Art
[0002] Red mud is an industrial solid waste discharged when the aluminum industry extracts alumina. Because it contains a large amount of iron oxide and looks similar to red soil, it is called red mud. Due to differences in ore grade, production methods and technical levels, approximately 1.0 to 1.8 tons of red mud are discharged for every ton of alumina produced. The accumulation of red mud will affect the normal use of land.
[0003] In the recycling method of red mud, the red mud first needs to be filtered, dried, then crushed, mixed with additives, and finally roasted, ground, and magnetically separated to extract high-grade metals. The remaining waste can then be used as construction materials.
[0004] When existing crushing equipment dries and crushes red mud, although a large amount of water can be filtered out of the red mud after filtration, the moisture content of the flaky red mud is still between 20% and 40%. This requires the red mud to be dried before crushing, otherwise it will stick to the crushing teeth, affecting the process. In addition, the existing crushing device cannot finely crush the red mud, resulting in a decrease in mixing uniformity during mixing. Therefore, it is necessary to improve the existing crushing device to enhance its functionality. Utility Model Content
[0005] The purpose of the utility model is to provide a red mud post-filtration crushing device in order to solve the above-mentioned problems.
[0006] The technical solution adopted by the utility model is as follows: a red mud post-filtration crushing device, comprising a main support body, a large particle discharge port and a discharge port, wherein the large particle discharge port is symmetrically provided on both sides of the middle of the main support body, and the discharge port is integrated with the bottom of the large particle discharge port, and a drying device for stirring and heating the filter material is provided above the main support body;
[0007] The drying device includes a heating chamber, a heating plate, a support shaft, a guide blade, a scraper and a feed inlet. The heating chamber is installed above the main support body through a bracket, and a heating plate is embedded in the inner wall interlayer of the heating chamber. The inside of the heating chamber is rotatably connected to the support shaft, and the guide blades are installed around the support shaft through the bracket. The scraper is installed at the gap between the surface of the support shaft and the guide blade. The feed inlet is provided at the upper opening of one side of the heating chamber. The heating chamber is a hollow columnar setting, the heating plate is located at the bottom of one half of the heating chamber, the guide blade is an "S-shaped coil spring" setting, and the distance between the guide blade and the heating chamber is 3MM;
[0008] A material storage chamber is provided between the main support body and the discharge end of the heating chamber, a discharge valve is installed in the middle of the material storage chamber, a crushing component is provided above the main support body, a screening component is provided in the middle of the main support body, and a fine grinding component is provided below the main support body;
[0009] The crushing assembly includes: a crushing chamber and a crushing roller. The crushing chamber is provided above the main support body. The crushing roller is rotatably connected to the crushing chamber. The crushing chamber and the crushing roller are both provided with crushing teeth that fit together.
[0010] The screening assembly includes: a sieve stone frame, a spring telescopic rod, a drive motor, an eccentric wheel and a screen. The sieve stone frame is installed inside the main support body through the spring telescopic rod. The screen is embedded in the middle of the sieve stone frame. The drive motor is installed above the large particle discharge port inside the main support body. The eccentric wheel is installed on the output shaft of the drive motor.
[0011] The fine grinding assembly includes: a fine screen cavity, a rotating frame, a cleaning plate, and a rolling roller. The fine screen cavity is fixedly installed at the lower part of the main support body, and the fine screen cavity is rotatably connected to the rotating frame. Cleaning plates and rolling rollers are respectively installed on both sides of the rotating frame. The fine screen cavity is closed at both ends, and there are sieve holes with a diameter of 5MM on the surface. The length of the rolling roller is consistent with the length inside the fine screen cavity, and there is steel wire wool on the surface of the cleaning plate.
[0012] The screen is arranged in an arc shape as a whole, with both ends extending to the large particle discharge outlet, and the mesh diameter of the screen is 8MM.
[0013] The eccentric end surface of the eccentric wheel is rotatably connected to a roller, and the eccentric end of the eccentric wheel is in contact with the stone screening frame.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0015] 1. In the utility model, a support shaft is used to rotate in the heating chamber. The guide vanes arranged in the form of "S-shaped coil springs" have limited diameters and can push red mud materials of the same thickness as the guide vanes to move, thereby cooperating with the heating plate to heat the red mud materials. The rotating scraper contacts the red mud materials, scrapes them up, improves the uniformity of heating, and uniformly heats the red mud materials, thereby improving the efficiency of the subsequent crushing of the red mud materials.
[0016] 2. In the present invention, the red mud material can be crushed twice by using the crushing component and the fine grinding component, thereby increasing the crushing efficiency and the fineness of the crushing, making the entire device more convenient to use, and the entire operation process is a non-stop operation, which will not affect the subsequent mixing process and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the front internal structure of the present invention;
[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at point A;
[0020] Figure 4 This is a schematic diagram of the explosion structure of the heating chamber in the utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the stone screen frame in the utility model;
[0022] Figure 6 This is a schematic diagram of the structure of the rotating frame in the utility model;
[0023] Figure 7 This is a schematic structural diagram of the second embodiment of the present invention;
[0024] Figure 8 For this utility model Figure 7 A schematic diagram of the enlarged structure at point B.
[0025] Markings in the figure: 1. Main support body; 101. Large particle discharge port; 102. Discharge port; 2. Heating chamber; 201. Heating plate; 202. Support shaft; 203. Guide vane; 204. Scraper; 205. Feed port; 3. Storage chamber; 301. Discharge valve; 4. Crushing chamber; 401. Crushing roller; 402. Passive plate; 4021. Cylinder; 5. Screen frame; 501. Spring telescopic rod; 502. Drive motor; 5021. Eccentric wheel; 503. Screen; 6. Fine screen chamber; 7. Rotating frame; 701. Cleaning plate; 702. Rolling roller. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] In this utility model:
[0028] Example 1:
[0029] Reference Figure 1-6A red mud post-filtration crushing device includes a main support body 1, a large particle discharge port 101 and a discharge port 102. The large particle discharge port 101 is symmetrically provided on both sides of the middle of the main support body 1. The discharge port 102 is integrated at the bottom of the large particle discharge port 101. A drying device for stirring and heating the filter material is provided above the main support body 1.
[0030] The drying device includes a heating chamber 2, a heating plate 201, a support shaft 202, a guide blade 203, a scraper 204 and a feed port 205. The heating chamber 2 is installed above the main support body 1 through a bracket. The heating plate 201 is embedded in the inner wall interlayer of the heating chamber 2. The heating chamber 2 is a hollow columnar setting. The heating plate 201 is located at the bottom of one-half of the heating chamber 2. The heating plate 201 heats the red mud material to facilitate subsequent crushing operations. The support shaft 202 is rotatably connected inside the heating chamber 2. The support shaft 202 is surrounded by brackets. The guide blade 203 is configured as an S-shaped coil spring, and the distance between the guide blade 203 and the heating chamber 2 is 3 mm. A scraper 204 is installed between the surface of the support shaft 202 and the guide blade 203. The guide blade 203 pushes the red mud material of the same thickness as the guide blade 203 to move, and cooperates with the heating plate 201 to heat the red mud material. The rotating scraper 204 contacts the red mud material, scraping it up to improve the uniformity of heating. A material inlet 205 is provided at the upper opening on one side of the heating chamber 2.
[0031] A material storage chamber 3 is provided between the main support body 1 and the discharge end of the heating chamber 2. A discharge valve 301 is installed in the middle of the material storage chamber 3. A crushing component is provided above the main support body 1, a screening component is provided in the middle of the main support body 1, and a fine grinding component is provided below the main support body 1.
[0032] The crushing assembly includes: a crushing chamber 4 and a crushing roller 401. The crushing chamber 4 is provided above the main support body 1. The crushing roller 401 is rotatably connected to the crushing chamber 4. The surfaces of the crushing chamber 4 and the crushing roller 401 are both provided with mutually fitting crushing teeth. The teeth of the movable crushing roller 401 engage with the teeth of the crushing chamber 4 to crush the red mud material, facilitating uniform mixing with the added material in the later stage.
[0033] The screening assembly includes: a sieve stone frame 5, a spring telescopic rod 501, a drive motor 502, an eccentric wheel 5021 and a screen 503. The sieve stone frame 5 is installed inside the main support body 1 through the spring telescopic rod 501. The middle of the sieve stone frame 5 is embedded with a screen 503. The drive motor 502 is installed above the large particle discharge port 101 inside the main support body 1. The eccentric wheel 5021 is installed at the output shaft of the drive motor 502. The sieve stone frame 5 is impacted by the eccentric end of the eccentric wheel 5021 by the spring. The retraction stroke of the spring telescopic rod 501 is buffered. At this time, the longitudinal up and down movement causes the screen 503 to vibrate, and then the screen 503 is used to screen the red mud material. Finally, the large particles screened out fall into the large particle discharge port 101 by gravity and are discharged. The eccentric end surface of the eccentric wheel 5021 is rotatably connected to the roller, and the eccentric end of the eccentric wheel 5021 is in contact with the screen stone frame 5. The roller can rotate when in contact with the screen stone frame 5, reducing the direct friction with the screen stone frame 5 and improving the service life.
[0034] The fine grinding assembly includes: a fine screen chamber 6, a rotating frame 7, a cleaning plate 701, and a rolling roller 702. The fine screen chamber 6 is fixedly installed at the lower part of the main support body 1, and the rotating frame 7 is rotatably connected to the fine screen chamber 6. The cleaning plate 701 and the rolling roller 702 are respectively installed on both sides of the rotating frame 7. When the rotating frame 7 rotates counterclockwise, the rolling roller 702 contacts the red mud material and rolls the red mud material to further crush it. Since the two ends of the fine screen chamber 6 are closed and there are sieve holes with a diameter of 5MM on the surface, the further crushed red mud material is discharged through the sieve holes.
[0035] Reference Figure 6 Furthermore, both ends of the fine screen cavity 6 are closed, and there are sieve holes with a diameter of 5MM on the surface. The length of the rolling roller 702 is consistent with the length inside the fine screen cavity 6, and there are steel wool on the surface of the cleaning plate 701. The steel wool on the surface of the cleaning plate 701 uses the rigidity of the steel wire to further clear the sieve holes and prevent blockage.
[0036] Reference Figure 5 Furthermore, the screen 503 is arranged in an arc shape as a whole, with both ends extending to the large particle discharge port 101. The mesh diameter of the screen 503 is 8MM. The screen 503 is used to screen the red mud material. Finally, the large particles screened out fall into the large particle discharge port 101 by gravity and are discharged.
[0037] Furthermore, the axes of the support shaft 202, the discharge valve 301, the crushing roller 401, and the rotating frame 7 are all extended to the outside of the device, and are equipped with a drive motor, which is connected to the output shaft of the drive motor, and the drive motor is electrically connected to the external power supply through a switch.
[0038] Example 2:
[0039] Reference Figure 7 、8 In addition to the embodiment in which the crushing assembly includes: a crushing chamber 4 and a crushing roller 401, a crushing chamber 4 is provided above the main support body 1, a crushing roller 401 is rotatably connected to the crushing chamber 4, and the surfaces of the crushing chamber 4 and the crushing roller 401 are both provided with crushing teeth that fit together, there is another embodiment;
[0040] The crushing assembly includes: a crushing chamber 4, a crushing roller 401, a passive plate 402 and a cylinder 4021. The passive plate 402 is installed on one side of the crushing chamber 4 through the cylinder 4021, and an elastic rubber sealing surface is provided at the gap between the passive plate 402 and the crushing chamber 4. The crushing roller 401 is rotatably connected to the inside of the crushing chamber 4, and the surfaces of the crushing roller 401 and the passive plate 402 are occluded with a semicircular protrusion with a diameter of 2MM.
[0041] When the crushing roller 401 needs to crush the red mud material, the passive plate 402 moves with the extension and contraction of the cylinder 4021, thereby switching the distance between the passive plate 402 and the crushing roller 401. At this time, when the distance between the passive plate 402 and the crushing roller 401 becomes larger, more materials can move downward with the rotation of the crushing roller 401, and when the distance between the passive plate 402 and the crushing roller 401 becomes smaller, the red mud material can be squeezed and crushed by friction.
[0042] Compared with the bite crushing of the first embodiment, in the second embodiment, the movable passive plate 402 takes up more material, has a higher crushing efficiency for the red mud material, and the extrusion crushing increases the fineness of the crushing.
[0043] Furthermore, the pipeline interface of the cylinder 4021 is connected to an external air pump through a pipeline, and the air pump uses gas to control the expansion and contraction of the cylinder 4021.
[0044] Working principle: First, the chopped and semi-dried red mud material is sent to the feed port 205 through the conveyor belt. At this time, the driving motor drives the support shaft 202 to rotate in the heating chamber 2. The guide blade 203 set in the form of an "S-shaped coil spring" has a limited diameter and can push the red mud material of the same thickness as the guide blade 203 to move, and cooperate with the heating plate 201 to heat the red mud material, while the rotating scraper 204 contacts the red mud material to scrape up the red mud material to improve the uniformity of heating. As the dried red mud material enters the storage chamber 3, the discharge valve 301 at the bottom of the storage chamber 3 sends the red mud material into the crushing chamber 4 in equal amounts. At this time, the teeth of the rotating crushing roller 401 engage with the teeth of the crushing chamber 4 to crush the red mud material, which is convenient for uniform mixing with the added material in the later stage. The crushed red mud material enters the screening stone The frame 5 and the stone screening frame 5 are impacted by the eccentric end of the eccentric wheel 5021 and buffered by the retraction stroke of the spring telescopic rod 501. At this time, the longitudinal up and down movement causes the screen 503 to vibrate, and then the screen 503 is used to screen the red mud material. Finally, the large particles screened out fall into the large particle discharge port 101 by gravity and are discharged, while the qualified red mud material enters the fine screen cavity 6. At this time, the driving motor drives the rotating frame 7 to rotate. When the rotating frame 7 rotates counterclockwise, the rolling roller 702 contacts the red mud material and collides and crushes the red mud material to further crush it. Since the two ends of the fine screen cavity 6 are closed and there are sieve holes with a diameter of 5MM on the surface, the further crushed red mud material is discharged to the discharge port 102 through the sieve holes. The steel wire wool on the surface of the cleaning plate 701 uses the rigidity of the steel wire to further dredge the sieve holes to prevent blockage.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A red mud post-filtration crushing device, comprising a main support body (1), a large particle discharge port (101) and a discharge port (102), wherein the large particle discharge port (101) is symmetrically provided on both sides of the middle of the main support body (1), and the discharge port (102) is integrally provided at the bottom of the large particle discharge port (101), characterized in that: A drying device capable of stirring and heating the filter material is provided above the main support body (1); The drying device comprises a heating chamber (2), a heating plate (201), a support shaft (202), a guide blade (203), a scraper (204) and a feed port (205); the heating chamber (2) is mounted above the main support body (1) via a bracket; the heating plate (201) is embedded in the inner wall interlayer of the heating chamber (2); the interior of the heating chamber (2) is rotatably connected to the support shaft (202); the guide blade (203) is mounted around the support shaft (202) via a bracket; the scraper (204) is mounted at a gap between the surface of the support shaft (202) and the guide blade (203); and the feed port (205) is provided at an upper opening on one side of the heating chamber (2); A material storage chamber (3) is provided between the main support body (1) and the discharge end of the heating chamber (2), a discharge valve (301) is installed in the middle of the material storage chamber (3), a crushing assembly is provided at the upper part of the main support body (1), a screening assembly is provided at the middle part of the main support body (1), and a fine grinding assembly is provided at the lower part of the main support body (1); The crushing assembly comprises: a crushing chamber (4) and a crushing roller (401); the crushing chamber (4) is provided above the interior of the main support body (1); and the crushing roller (401) is rotatably connected to the interior of the crushing chamber (4); The screening assembly comprises: a sieve stone frame (5), a spring telescopic rod (501), a driving motor (502), an eccentric wheel (5021) and a screen (503); the sieve stone frame (5) is installed inside the main support body (1) via the spring telescopic rod (501); the screen (503) is embedded in the middle of the sieve stone frame (5); the driving motor (502) is installed above the large particle discharge port (101) inside the main support body (1); and the eccentric wheel (5021) is installed at the output shaft of the driving motor (502); The fine grinding assembly comprises: a fine screen cavity (6), a rotating frame (7), a cleaning plate (701), and a grinding roller (702); the fine screen cavity (6) is fixedly installed at the lower part of the main support body (1); the rotating frame (7) is rotatably connected to the fine screen cavity (6); and the cleaning plate (701) and the grinding roller (702) are respectively installed on both sides of the rotating frame (7).
2. The red mud post-filtration crushing device according to claim 1, characterized in that: The fine screen cavity (6) is closed at both ends and has sieve holes with a diameter of 5 mm on the surface. The length of the rolling roller (702) is consistent with the length inside the fine screen cavity (6), and the surface of the cleaning plate (701) has steel wool.
3. The red mud post-filtration crushing device according to claim 1, characterized in that: The grinding chamber (4) and the surface of the grinding roller (401) are both provided with grinding teeth that fit together.
4. The red mud post-filtration crushing device according to claim 1, characterized in that: The heating chamber (2) is in a hollow columnar configuration, and the heating plate (201) is located at the bottom of one-half of the heating chamber (2).
5. The red mud post-filtration crushing device according to claim 1, characterized in that: The guide blade (203) is configured as an "S-shaped coil spring", and the distance between the guide blade (203) and the heating chamber (2) is 3 mm.
6. The red mud post-filtration crushing device according to claim 1, characterized in that: The screen (503) is arranged in an arc shape as a whole, with both ends extending to the large particle discharge port (101), and the mesh diameter of the screen (503) is 8MM.
7. The red mud post-filtration crushing device according to claim 1, characterized in that: The eccentric end surface of the eccentric wheel (5021) is rotatably connected to a roller, and the eccentric end of the eccentric wheel (5021) is in contact with the stone screening frame (5).