A method for producing mineral micropowder in a high humidity environment

Abstract

The present invention provides a method for producing mineral micropowder in a high-humidity environment, comprising the following steps: S1. Cooling the smelted mineral blocks to 950-1050°C; S2. Turning the cooled mineral blocks over; S3. Watering the turned mineral blocks and then pounding them, repeating this process at least three times; S4. After cooling the mineral blocks to below 70°C, crushing them to obtain mineral particles with a particle size of 0.2-1.mm. S5. Dehumidifying the mineral particles; S6. Further crushing the dehumidified mineral particles to obtain a mineral powder with a fineness of less than 200 mesh; S7. Subsequent magnetic separation, Barmack treatment, and fine screening of the mineral powder to obtain the mineral micropowder. By repeating the watering-then-pounding process multiple times, the present invention ensures that the proportion of particles with a cut-grain shape in the total micropowder particles reaches over 90%. A dehumidification device is used to exchange heat between hot air and the high-humidity mineral particles, removing moisture from the mineral particles, thereby achieving efficient dehumidification. This high dehumidification efficiency creates favorable conditions for the subsequent production of ultrafine mineral micropowder.

Description

Technical Field

[0001] The invention belongs to the technical field of brown corundum smelting, and particularly relates to a method for manufacturing mineral micropowder in a high-humidity environment. Background Art

[0002] Brown corundum powder is a man-made abrasive made from alumina, carbon, and iron filings through a melting and reduction process. It boasts high toughness, can withstand significant pressure, and is resistant to crushing, albeit at a high cost. It can be used for bonded and coated abrasives, wet or dry sandblasting, ultra-fine grinding and polishing, and in the production of high-grade refractory materials and precision casting. It is widely used in the color TV industry for glass bulb grinding, as well as in the production of sandpaper, emery cloth, modules, and high-quality refractory materials. Brown corundum powder is obtained from semi-finished brown corundum blocks through multiple stages of crushing, magnetic separation, Barmack treatment, and fine screening.

[0003] At present, the existing brown corundum micropowder preparation process has the following problems:

[0004] (1) Due to Guizhou's natural climate, its relative air humidity is greater than 70% all year round. When the air humidity exceeds 50%, when producing and processing mineral micropowders, as long as the fineness of the mineral micropowder exceeds the 200 mesh sieve, the micropowder will easily stick together and cannot pass through the sieve. This reason has led to most Guizhou companies only being able to produce brown corundum micropowders below 200 mesh, which are low-end products with an average current sales price of about 5,300 yuan / ton and low added value. In the abrasives and grinding tools industry, when the produced brown corundum micropowder can pass through a sieve of 400 mesh or above, the market price will increase significantly. The finer the product, the higher the product value. When the mineral micropowder can pass through a sieve of 800 mesh or above, it can be used for coating or precision instrument grinding tools. The product price can reach 7,300 yuan / ton, which is more than 40% higher than the primary product. Therefore, it is very necessary to dehumidify the brown corundum block before using it to produce brown corundum micropowder.

[0005] (2) Another important technical indicator of high-end brown corundum abrasives is the particle shape of brown corundum micropowder. Because the high-end products of brown corundum abrasives are fine brown corundum micropowder, the particle shape of the single powder in the brown corundum micropowder should be as much as possible with cutting edge shapes. The brown corundum micropowder produced by the existing industry technology has about 80% of the particles with cutting edge shapes, and the particle shape is unstable and the cutting surface is uneven, which directly leads to the low working efficiency and processing accuracy of the grinding tool. The more advanced the technical field, the higher the requirements for the particle shape and uniformity of the abrasive. When the abrasive's cutting edge-shaped mineral powder particles account for more than 90% of all particles, its selling price can be increased by 10% based on the price of the same-sized mineral powder particles. Therefore, increasing the particle size (mesh) of brown corundum mineral powder and the proportion of mineral powder particles with cutting edges in the total particles can greatly increase the value and price of the abrasive, thereby increasing the added value of bauxite. Summary of the Invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a method for manufacturing mineral micropowder in a high humidity environment. Through this method, the granular material can be dehumidified before being further made into mineral micropowder, thereby creating conditions for the subsequent preparation of finer mineral micropowders. In addition, this method can also greatly increase the proportion of mineral micropowder particles with cutting edge shapes in all particles. At the same time, the particle shape of the mineral micropowder is stable and the cutting surface is uniform.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A method for producing mineral micropowder in a high humidity environment comprises the following steps:

[0009] S1. Cool the smelted mineral blocks to 950-1050℃.

[0010] S2. Turn the cooled mineral blocks over.

[0011] S3. Water the mineral blocks after turning them over and then pound them, repeating this process at least three times.

[0012] S4. After the mineral block is cooled to below 70°C, it is crushed to obtain mineral particles with a particle size of 0.2-1.mm.

[0013] S5. Dehumidify the mineral particles.

[0014] S6. further crushing the dehumidified mineral particles to obtain mineral powder with a fineness of less than 200 mesh.

[0015] S7. The mineral powder is then subjected to magnetic separation, Barmack treatment, and fine screening in sequence to obtain mineral fine powder.

[0016] Furthermore, the number of times watering followed by pounding in step S3 is five.

[0017] Furthermore, the steps of watering first and then beating in step S3 are as follows:

[0018] S31. Use room temperature water to irrigate the mineral block for 5-8 seconds;

[0019] S32. After pouring, after the water in the mineral block is evaporated, the mineral is quickly beaten for 1-3 times;

[0020] S33. Then continue to repeat steps S31-S32 five times.

[0021] Furthermore, the mineral particles in step S5 are dehumidified by a dehumidification device, and the dehumidification device includes an outer box, an inner box, a dividing plate, a first conveying mechanism, a second conveying mechanism, a hot air mechanism, and an exhaust mechanism; the outer box is hollow inside, and a feed trough for mineral particles to enter the outer box is provided in the middle of the top of the outer box, and a discharge trough for discharging the dried mineral particles from the outer box is provided in the middle of the bottom of the outer box; the inner box is fixed inside the outer box and divides the interior of the outer box into two upper and lower cavities, and a coarse material channel penetrating the upper and lower cavities of the outer box is provided on each of the left and right sides of the inner box; the inner box is hollow inside, and many sieve holes penetrating the upper cavity of the outer box and the interior of the inner box are provided on the top of the inner box, and a discharge trough penetrating the interior of the inner box and the lower cavity of the outer box is provided in the middle of the bottom of the inner box; the dividing plate is fixed inside the outer box and divides the interior of the outer box into two upper and lower cavities, and a coarse material channel penetrating the upper and lower cavities of the outer box is provided on each of the left and right sides of the inner box; the inner box is hollow inside, and many sieve holes penetrating the upper cavity of the outer box and the interior of the inner box are provided on the top of the inner box, and a discharge trough penetrating the interior of the inner box and the lower cavity of the outer box is provided in the middle of the bottom of the inner box; It is fixed inside the inner box and divides the interior of the inner box into two upper and lower cavities. The upper surface of the dividing plate is inclined from the middle to the left and right sides, and a fine material channel is provided on each side of the dividing plate, which passes through the upper and lower cavities of the inner box; the first conveying mechanism is installed in the upper cavity of the outer box, and is used to convey the mineral particles from the middle to the two coarse material channels respectively (and then dry them during the conveying process); the second conveying mechanism is installed in the inner box and is located below the dividing plate, and is used to convey the mineral particles from both sides below the dividing plate to the unloading chute (and then dry them during the conveying process); the hot air mechanism is installed outside the outer box, and is used to connect the external hot air to the lower cavity of the outer box and the lower cavity of the inner box respectively; the exhaust mechanism is installed outside the outer box, and is used to extract the gas in the upper cavity of the outer box to the outside.

[0022] Furthermore, wind-locking dischargers are respectively provided in the feed chute, discharge chute and discharge chute to prevent cold air from entering the outer box and the inner box, thereby improving the drying efficiency.

[0023] Furthermore, the first conveying mechanism includes a first reduction motor, a first transmission shaft, and a first spiral plate; the first reduction motor is installed on the outer wall of the outer box; the first transmission shaft is installed in the upper cavity of the outer box in a transversely rotatable manner, and one end thereof extends out of the outer box and is coaxially connected to the rotating shaft of the first reduction motor; the first spiral plate is arranged in the upper cavity of the outer box and spirally fixed on the first transmission shaft. The first spiral plate is located on the left side of the feed trough and has an opposite spiral direction to the right side of the feed trough, and is used to transport the mineral particles in the middle of the upper cavity of the outer box to the two coarse material channels respectively.

[0024] Furthermore, the second conveying mechanism includes a second reduction motor, a second transmission shaft, and a second spiral plate; the second reduction motor is installed on the outer wall of the outer box; the second transmission shaft is laterally rotatably installed in the lower cavity of the inner box, and one end thereof is rotatably extended out of the outer box and coaxially connected to the rotating shaft of the second reduction motor; the second spiral plate is arranged in the lower cavity of the inner box and spirally fixed on the second transmission shaft. The second spiral plate is located on the left side of the discharge chute and has an opposite spiral direction to the right side of the discharge chute, and is used to transport mineral particles on the left and right sides of the lower cavity of the inner box to the discharge chute.

[0025] Furthermore, the hot air mechanism includes a hot air device for generating hot air and a hot air pipe for transporting hot air to the lower cavity of the outer box and the lower cavity of the inner box; the hot air device is arranged outside the outer box; one end of the hot air pipe is connected to the air outlet of the hot air device, and the other end is respectively connected to the lower cavity of the outer box and the lower cavity of the inner box.

[0026] Furthermore, the hot air device is a hot air blower or a hot air boiler.

[0027] Furthermore, the exhaust mechanism includes an exhaust fan and an exhaust pipe; the exhaust fan is installed on the outer wall of the outer box; the exhaust pipe is installed outside the outer box and connected to the upper cavity of the outer box.

[0028] Furthermore, the mineral is brown corundum.

[0029] The present invention repeats the treatment of watering followed by pounding after the mineral block is cooled to 950-1050°C. At the same time, the artificial watering time, watering times and pounding times are controlled so that the proportion of particles with cutting particle shape in the total micropowder particles reaches more than 90% after the treatment is completed. In addition, during dehumidification, the mineral particles are graded by a dehumidification device and then fully dispersed by two conveying mechanisms with double helices, so that the hot air and the high-humidity mineral particles can undergo more efficient heat exchange, taking away the moisture of the mineral particles, thereby achieving efficient dehumidification with high dehumidification efficiency, creating favorable conditions for the subsequent production of ultrafine mineral micropowder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be described in further detail below with reference to the accompanying drawings.

[0031] Figure 1 This is a front view of the dehumidification device of the present invention;

[0032] Figure 2 for Figure 1 Full cross-section of

[0033] Figure 3 This is a rear view of the dehumidification device of the present invention;

[0034] As shown in the figure: 1-outer box, 2-pillar, 3-feed trough, 4-discharge trough, 5-coarse material channel, 6-inner box, 7-fine material channel, 8-discharge chute, 9-distribution plate, 10-first reduction motor, 11-first transmission shaft, 12-first spiral plate, 13-second reduction motor, 14-second transmission shaft, 15-second spiral plate, 16-hot air pipe, 17-exhaust fan, 18-exhaust pipe, 19-filter plate, 20-vibration motor, 21-eccentric block, 22-stirring plate. DETAILED DESCRIPTION

[0035] The following specific embodiments illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only some embodiments of the present invention, not all 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.

[0036] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0038] Example 1:

[0039] A method for producing brown corundum micropowder in a high humidity environment comprises the following steps:

[0040] S1. Cool the brown corundum block obtained by smelting to 1000℃ (surface temperature). At this time, the internal temperature of the brown corundum block is still higher than 1000℃.

[0041] S2. Turn the cooled brown corundum block over.

[0042] S3. The brown corundum block after turning the bag was first watered and then beaten, and repeated five times; each step was first watered and then beaten:

[0043] S31. Use room temperature water to pour brown corundum blocks for 5-8 seconds. At this time, a shell with many cracks is formed on the outside of the brown corundum blocks. More than 90% of the shell is composed of particles with a cutting shape, while the inside of the shell is still at a high temperature.

[0044] S32. After pouring, after the water in the brown corundum block is evaporated, the brown corundum is quickly beaten for 3 times to break the outer shell of the brown corundum block, so that the particles with cutting grains fall off, revealing the brown corundum block;

[0045] S33. Then, continue to repeat steps S31-S32 five times, continuously forming a shell with cracks on the outside of the brown corundum block, and then continuously breaking and falling off the shell, ultimately achieving cooling and crushing of the brown corundum block.

[0046] S4. After the brown corundum block is cooled to about 70°C, it is crushed (multiple crushings, coarse crushing, medium crushing, and fine crushing) to obtain brown corundum particles with a particle size of 0.2-1.mm.

[0047] S5. Dehumidify the brown corundum particles. The brown corundum particles are dehumidified using a dehumidification device, which includes an outer box 1, an inner box 6, a material distribution plate 9, a first conveying mechanism, a second conveying mechanism, a hot air mechanism, and an exhaust mechanism.

[0048] The outer box 1 is a hollow rectangular parallelepiped, with two (inverted T-shaped) struts 2 on the left and right sides of the bottom to support the entire device. A feed chute 3 (with a tapered top) is located in the center of the top of the outer box 1 for the brown corundum blocks to enter the outer box 1. A discharge chute 4 is located in the center of the bottom of the outer box 1 for discharging the dried brown corundum blocks from the outer box 1. The inner bottom of the outer box 1 is inclined from both sides toward the discharge chute 4.

[0049] The inner box 6 is fixed in the outer box 1 and divides the interior of the outer box 1 into two cavities, an upper and a lower cavities. A coarse material channel 5 is provided on each side of the inner box 6, which passes through the upper and lower cavities of the outer box (that is, a coarse material channel 5 is provided between the left side wall of the inner box 6 and the inner wall on the left side of the outer box 1, and a coarse material channel 5 is also provided between the right side wall of the inner box 6 and the inner wall on the right side of the outer box 1); the interior of the inner box 6 is hollow, and a number of sieve holes are provided on the top of the inner box 6, which pass through the upper cavity of the outer box 1 and the interior of the inner box 6 (upper cavity). The sieve holes are used to grade the brown corundum blocks, and the coarse ones are left in the upper cavity of the outer box 1 for processing, and the fine ones enter the inner box 6 for processing; a discharge chute 8 is provided in the middle of the bottom of the inner box 6, which passes through the interior of the inner box 6 (lower cavity) and the lower cavity of the outer box 1 (used to discharge the dried brown corundum blocks into the lower cavity of the outer box 1).

[0050] The dividing plate 9 is fixed inside the inner box 6 and divides the inner box 6 into two upper and lower cavities. The upper surface of the dividing plate 9 is inclined from the middle to the left and right sides. A fine material channel 7 is provided on each side of the dividing plate 9 to pass through the upper and lower cavities of the inner box 6; Figure 2 As shown, the dividing plate 9 has an inverted V-shaped structure. After the fine brown corundum blocks fall to the middle of the top of the dividing plate 9, the dividing plate 9 slides from the middle to both sides until the fine brown corundum blocks are diverted to the two fine material channels 7.

[0051] The first conveying mechanism is installed in the upper cavity of the outer box 1 and is used to convey the brown corundum blocks from the middle of the upper cavity of the outer box 1 to the two coarse material channels 5 (and then dry them during the conveying process). The first conveying mechanism includes a first reduction motor 10, a first transmission shaft 11, and a first spiral plate 12.

[0052] The first reduction motor 10 is mounted on the outer wall of the outer box 1 and is used to drive the first transmission shaft 11 to rotate.

[0053] The first transmission shaft 11 (with bearings at both ends) is laterally rotatably installed in the upper cavity of the outer box 1, and one end thereof extends out of the outer box 1 and is coaxially connected to the rotating shaft of the first reduction motor 10; bearings are provided at both ends of the first transmission shaft 1 at the connection with the outer box 1.

[0054] The first spiral plate 12 is arranged in the upper cavity of the outer box 1 (the lower part is in contact with the upper surface of the inner box 6) and is spirally fixed on the first transmission shaft 11. The first spiral plate 12 is located at the left part of the feed trough 3 and has a spiral direction opposite to that of the right part of the feed trough 3, and is used to transport the brown corundum blocks in the middle of the upper cavity of the outer box 1 to the two coarse material channels 5 respectively (drying is carried out during the transportation process), that is, the first spiral plate 12 is divided into two left and right sections and the spiral directions of the two sections are opposite, so the directions of material transportation of the two are also opposite. When the first spiral plate 12 rotates with the first transmission shaft 11, the rotation direction of the first transmission shaft 11 and the first spiral plate 12 must ensure that the brown corundum blocks that fall into the middle of the upper cavity of the outer box 1 can be transported from the middle of the upper cavity of the outer box 1 to the two coarse material channels 5 on both sides.

[0055] The second conveying mechanism is installed in the inner box 6 and located below the distributor plate 9. It is used to transport the brown corundum blocks from both sides below the distributor plate 9 to the discharge chute 8 (drying during the transportation process). The second conveying mechanism includes a second reduction motor 13, a second transmission shaft 14, and a second spiral plate 15.

[0056] The second reduction motor 13 is mounted on the outer wall of the outer box 1 .

[0057] The second transmission shaft 14 is rotatably mounted transversely within the lower chamber of the inner box 6, with one end rotatably extending out of the outer box 1 (inner box 6 and outer box 1) to be coaxially connected to the rotating shaft of the second reduction motor 13. After both ends of the second transmission shaft 14 rotatably extend out of the inner box 6, it is then rotatably mounted on the outer box 1 (after laterally passing through the coarse material passage 5) (with one end extending out of the outer box 1 to be connected to the second reduction motor 13). The portion of the second transmission shaft 14 located within the coarse material passage 5 is equipped with multiple stirring plates 22 that rotate with the second transmission shaft 14. The stirring plates 22 are used to prevent blockage in the coarse material passage 5 and further disperse the coarse material.

[0058] The second spiral plate 15 is arranged in the lower cavity of the inner box 6 and is screwed on the second transmission shaft 14 (the bottom of the second spiral plate 15 is in contact with the upper surface of the bottom of the inner box 6). The second spiral plate 15 is located on the left side of the discharge chute 8 and has a spiral direction opposite to that of the right side of the discharge chute 8. It is used to transport the brown corundum blocks on the left and right sides of the lower cavity of the inner box 6 to the discharge chute 8 (drying is carried out during the transportation process), that is, the second spiral plate 15 is divided into two sections, left and right, and the spiral directions of the two sections are opposite, so the directions in which the materials are transported by the two are also opposite. When the second spiral plate 15 rotates with the second transmission shaft 15, the rotation direction of the second transmission shaft 15 and the second spiral plate 15 must ensure that the brown corundum blocks that fall on both sides of the lower cavity of the inner box 6 can be transported from the left and right sides of the lower cavity of the inner box 6 to the discharge chute 8.

[0059] The hot air mechanism is installed outside the outer box 1 and is used to connect the external hot air to the lower cavity of the outer box 1 and the lower cavity of the inner box 6 respectively. The hot air mechanism includes a hot air device for generating hot air and a hot air pipe 16 for transporting hot air to the lower cavity of the outer box 1 and the lower cavity of the inner box 6; the hot air device is arranged outside the outer box 1, and the hot air device is a hot air blower or a hot air boiler; one end of the hot air pipe 16 is connected to the air outlet of the hot air device, and the other end is connected to the middle of the lower cavity of the outer box 1 and the middle of the lower cavity of the inner box 6 respectively. Figure 3 As shown, the hot air duct 16 is in the shape of an "I", with its two horizontal sections connecting the lower cavity of the outer box 1 and the lower cavity of the inner box 6 respectively, and its vertical section is connected to the air outlet of the hot air device through a pipe. The hot air has two flow directions. One flow direction is: the hot air entering the lower cavity of the outer box 1 flows from the middle of the lower cavity of the outer box 1 to both sides, then enters the upper cavity of the outer box 1 through the two coarse material channels 5, and finally is discharged to the outside through the exhaust pipe 18 at the top of the upper cavity of the outer box 1. The other flow direction is: the hot air entering the lower cavity of the inner box 6 flows from the middle of the lower cavity of the inner box 6 to both sides, then enters the upper cavity of the inner box 6 through the fine material channel 7, then enters the upper cavity of the outer box 1 through the sieve hole at the top of the inner box 6, and finally is discharged to the outside through the exhaust pipe 18 at the top of the upper cavity of the outer box 1.

[0060] The exhaust mechanism is mounted outside the outer box 1 and is used to extract the gas in the upper cavity of the outer box 1 to the outside. The exhaust mechanism includes an exhaust fan 17 and an exhaust pipe 18. The exhaust fan 7 is mounted on the outer wall of the outer box 1. There are two exhaust fans 17, each fixed to the top of the outer box 1. The exhaust pipe 18 is mounted outside the outer box 1 and connected to the upper cavity of the outer box 1. There are two exhaust pipes 18, one connected to each side of the top of the upper cavity of the outer box 1, and each exhaust pipe 18 is connected one-to-one with the air inlet of the exhaust fan 17.

[0061] In the feed chute 3, the discharge chute 4 and the discharge chute 8, there are respectively provided with a wind-locking discharger, so that the outside cold air is difficult to enter the outer box 1 and the inner box 6, thereby improving the drying efficiency. The wind-locking discharger is an existing star-shaped discharger.

[0062] Dehumidification steps of the dehumidification device:

[0063] S51 start the exhaust fan 17, discharge the cold air from the outer box 1 and the inner box 6; at the same time start the hot air device and introduce hot air through the hot air duct 16 to the outer box 1 lower cavity and the inner box 6 lower cavity, preheating the outer box 1 and the inner box 6;

[0064] S52. Start the first conveying mechanism and the second conveying mechanism respectively;

[0065] S53. The granular brown corundum blocks obtained by the crusher are fed into the middle of the upper cavity of the outer box 1 through the feed trough 3, and then fall into the middle of the top of the inner box 6. After being screened by the sieve holes on the top of the inner box 6, the coarse particles remain on the top of the inner box 6 and are pushed by the first spiral plate 12 of the first conveying mechanism to be conveyed from the middle of the upper cavity of the outer box 1 to the coarse material channels 5 on both sides. During the conveying process, they are dispersed and heat exchange is achieved with the hot air, and then the moisture is taken away by the hot air.

[0066] S54. After the coarse material moves to the coarse material channel 5, it moves down along the coarse material channel 5 and enters the lower cavity of the outer box 1. In the process of passing through the coarse material channel 5, the coarse material again exchanges heat with the upward flowing hot air, and the moisture is taken away, completing the drying and dehumidification. Finally, it slides along the bottom of the lower cavity of the outer box 1 to the discharge chute 4, and is discharged to the outside by the discharge chute 4 for subsequent processing.

[0067] S55. The fine material falling into the upper cavity of the inner box 6 falls onto the dividing plate 9 and is dispersed, and slides toward the fine material channels 7 on the left and right sides. During the sliding process, it exchanges heat with the hot air and the moisture is taken away; after the fine material slides into the two sides of the lower cavity of the inner box 6 through the fine material channel 7, it is pushed by the second spiral plate 15 of the second conveying mechanism to move from the two sides of the lower cavity of the inner box 6 toward the middle unloading trough 8. In this process, the fine material exchanges heat with the hot air again to achieve dehumidification and drying. After the fine material moves to the unloading trough 8, it is discharged into the discharging trough 4 by the unloading trough 8, and finally discharged to the outside by the discharging trough 4 for subsequent processing.

[0068] In this way, by continuously adding brown corundum blocks, the high-humidity brown corundum blocks can be continuously dried and dehumidified.

[0069] S6. further crushing the dehumidified brown corundum particles to obtain brown corundum powder with a fineness of less than 200 mesh.

[0070] S7. The brown corundum powder is subjected to magnetic separation, Barmack treatment, and fine screening in sequence to obtain brown corundum micropowder.

[0071] Example 2:

[0072] The difference between this embodiment and embodiment 1 is that:

[0073] like Figure 2 As shown, the dehumidification device in step S5 also includes a porous filter plate 19, which is fixed in the upper cavity of the outer box 1 and located above the first spiral plate 12. The presence of the filter plate 19 can prevent the exhaust fan 17 from sucking away the fine material and reduce the loss of powder.

[0074] Example 3:

[0075] The difference between this embodiment and embodiment 2 is that:

[0076] like Figure 1 and Figure 2 As shown, at least one vibration mechanism for vibrating the filter plate 19 is provided below the filter plate 19. The vibration mechanism includes a vibration motor 20 and an eccentric weight 21. The vibration motor 20 is mounted on the outer wall of the outer box 1. The eccentric weight 21 is provided below the filter plate 19 and is coaxially fixed to the rotating shaft of the vibration motor 20. The presence of the vibration mechanism can prevent the filter plate 19 from clogging. The vibration motor 20 drives the eccentric weight 21 to rotate at a high frequency and strike the filter plate 19, shaking off the powder adhering to the filter plate 19 and preventing the holes in the filter plate 19 from clogging.

[0077] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0078] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0079] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A method for producing brown corundum mineral powder in a high humidity environment, characterized in that: The following steps are involved: S1. Cooling the smelted mineral block to 950-1050°C; S2. The cooled mineral block is turned over; S3. The mineral blocks after turning the bag are first watered and then beaten, and repeated at least three times; the specific steps are: S31. Use room temperature water to irrigate the mineral block for 5-8 seconds; S32. After pouring, after the water in the mineral block is evaporated, the mineral block is beaten for 1-3 times to break the outer shell of the brown corundum block, so that the particles with cutting grains fall off, revealing the brown corundum block; S33 then continue to repeat steps S31-S32 five times, continuously forming a shell with cracks on the outside of the brown corundum block, and then continuously breaking the shell off, ultimately achieving cooling and crushing the brown corundum block; S4. After the mineral block is cooled to below 70°C, it is crushed to obtain mineral particles with a particle size of 0.2-1.0 mm; S5. Dehumidifying the mineral particles; S6. The dehumidified mineral particles are further crushed to obtain a mineral powder having a fineness of less than 200 mesh; S7. The mineral powder is then subjected to magnetic separation, Barmack treatment, and fine screening in sequence to obtain mineral fine powder.

2. The method for producing brown corundum mineral powder under a high humidity environment according to claim 1, characterized in that: The number of times of watering followed by pounding in step S3 is five.

3. The method for producing brown corundum mineral powder under a high humidity environment according to claim 1, characterized in that: In step S5, the mineral particles are dehumidified using a dehumidification device, and the dehumidification device includes: The outer box is hollow inside, with a feed chute in the middle of the top and a discharge chute in the middle of the bottom; The inner box is fixed in the outer box and divides the interior of the outer box into two upper and lower cavities. A coarse material channel is provided on each of the left and right sides of the inner box, which passes through the upper and lower cavities of the outer box. The inner box is hollow, and a plurality of sieve holes are provided on the top of the inner box, which pass through the upper cavity of the outer box and the interior of the inner box. A discharge chute is provided in the middle of the bottom of the inner box, which passes through the interior of the inner box and the lower cavity of the outer box. A material dividing plate is fixed inside the inner box and divides the inner box into two upper and lower cavities. The upper surface of the material dividing plate is inclined from the middle to the left and right sides. A fine material channel is provided on each side of the material dividing plate, which passes through the upper and lower cavities of the inner box; a first conveying mechanism, which is installed in the upper cavity of the outer box and is used to convey the mineral particles from the middle to the two coarse material channels respectively; a second conveying mechanism, which is installed in the inner box and located below the distributor plate, and is used to convey the mineral particles from both sides below the distributor plate to the discharge chute; A hot air mechanism is installed outside the outer box and is used to connect external hot air to the lower cavity of the outer box and the lower cavity of the inner box respectively; The exhaust mechanism is installed outside the outer box and is used to extract the gas in the upper cavity of the outer box to the outside.

4. The method for producing brown corundum mineral powder under a high humidity environment according to claim 3, characterized in that: Air-locking dischargers are respectively provided in the feed chute, discharge chute and discharge chute.

5. The method for producing brown corundum mineral powder under high humidity environment according to claim 3, characterized in that: The first conveying mechanism includes a first reduction motor, a first transmission shaft, and a first spiral plate; the first reduction motor is mounted on the outer wall of the outer box; the first transmission shaft is laterally rotatably mounted in the upper cavity of the outer box, and one end thereof extends out of the outer box and is coaxially connected to the rotating shaft of the first reduction motor; the first spiral plate is arranged in the upper cavity of the outer box and spirally fixed on the first transmission shaft, the first spiral plate is located on the left side of the feed chute and has a spiral direction opposite to that of the first spiral plate located on the right side of the feed chute, and is used to transport the mineral particles in the middle of the upper cavity of the outer box to the two coarse material channels respectively; The second conveying mechanism includes a second reduction motor, a second transmission shaft, and a second spiral plate; the second reduction motor is installed on the outer wall of the outer box; the second transmission shaft is laterally rotatably installed in the lower cavity of the inner box, and one end thereof is rotatably extended out of the outer box and is coaxially connected to the rotating shaft of the second reduction motor; the second spiral plate is arranged in the lower cavity of the inner box and spirally fixed on the second transmission shaft. The second spiral plate is located on the left side of the unloading chute and has an opposite spiral direction to the right side of the unloading chute, and is used to transport the brown corundum blocks on the left and right sides of the lower cavity of the inner box to the unloading chute.

6. The method for producing brown corundum mineral powder under high humidity environment according to claim 3, characterized in that: The hot air mechanism includes a hot air device for generating hot air and a hot air pipe for transporting hot air to the lower cavity of the outer box and the lower cavity of the inner box; the hot air device is arranged outside the outer box; one end of the hot air pipe is connected to the air outlet of the hot air device, and the other end is respectively connected to the lower cavity of the outer box and the lower cavity of the inner box.

7. The method for producing brown corundum mineral powder under high humidity environment according to claim 6, characterized in that: The hot air device is a hot air blower or a hot air boiler.

8. The method for producing brown corundum mineral powder under high humidity environment according to claim 3, characterized in that: The exhaust mechanism includes an exhaust fan and an exhaust pipe; the exhaust fan is installed on the outer wall of the outer box; the exhaust pipe is installed outside the outer box and is connected to the upper cavity of the outer box.

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