Preparation method and preparation system of superfine mica powder

Abstract

The invention discloses a preparation method and a preparation system of superfine mica powder. The preparation system comprises a base and a grinding disc, a grinding disc is rotationally arranged at the top end of the base, and a material guiding assembly is arranged in the grinding disc and has two states; in the first state, the material guiding assembly is in transmission connection with the grinding disc, the material guiding assembly moves upwards to drive the shifting ring piece to bulge, mica powder and the grinding assembly are attached and gathered through the bulge structure of the shifting ring piece, the grinding effect of the grinding assembly is improved, the mica powder overflowing from the shifting ring piece circularly enters the grinding disc again through the material guiding assembly to be ground, and the grinding efficiency is improved. The mica powder is circularly and finely ground in the grinding disc, so that the mica powder is more uniform, the mica powder is more finely ground, the material guiding assembly is moved downwards in a manual mode again, the shifting ring piece connected with the material guiding assembly is sunken downwards, and the material guiding assembly discharges the mica powder in the grinding disc through opposite movement of the driving assembly. And the use flexibility of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mica powder, and in particular to a preparation method and a preparation system of ultrafine mica powder. Background Art

[0002] Mica powder is a non-metallic mineral containing a variety of components, mainly SiO2, which generally has a content of about 49%, and Al2O3 content of about 30%; mica powder has good elasticity, toughness, insulation, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesion and other characteristics; mica has a wide range of uses, used in rubber, plastics, paint, ceramics, insulation, cosmetics, pigments, papermaking, metallurgical refractory materials, fire protection and other industries, and mica powder is added to the processed material as a whitening additive. When processing mica into powder, mica grinding equipment will be used to grind the mica into powder and remove impurities in the powder to improve the purity of the mica powder.

[0003] For example, the Chinese patent with publication number CN116851114A and titled "A Process for Preparing Modified High-whiteness Sericite Powder" has a preparation mechanism, in which a temporary storage component can temporarily store the sericite raw material, a transmission component can drive the grinding component after power is turned on and started, the grinding component can cooperate with the powder screening component to repeatedly grind the sericite raw material, the powder screening component can transport the sericite powder ground into a specified particle size to the retention component, the dehumidification component can provide heat energy to the retention component after power is turned on and started, the retention component can store the sericite powder, and at the same time, the sericite powder after impurities are removed can be dried;

[0004] The disadvantage of the prior art is that, since the ground mica powder has a low fit in the grinding equipment, in order to reduce the low fit of the mica powder in the grinding equipment, the ground mica powder is repeatedly ground using a conveying device, resulting in a low efficiency of ultrafine grinding of the mica powder. Summary of the invention

[0005] The purpose of the present invention is to provide a method and system for preparing ultrafine mica powder. The mica powder and the grinding component are fitted and gathered together by the raised structure of the shifting ring, so as to improve the grinding effect of the grinding component. The mica powder overflowing from the shifting ring is circulated again into the grinding disk through the material guide component for grinding, so that the mica powder is circulated and finely ground in the grinding disk, so that the mica powder is more uniform and the mica powder is ground more finely. The material guide component is moved downward manually again, so that the shifting ring connected to the material guide component is concave, and the driving component is moved in the opposite direction, so that the material guide component discharges the mica powder in the grinding disk, thereby improving the flexibility of the device when used.

[0006] A method for preparing ultrafine mica powder, characterized in that it comprises the following steps: step 1, selecting high-quality mica ore raw materials, and adding the mica ore raw materials into a hydraulic crusher, coarsely crushing to a particle size of 1 to 5 mm, removing impurities through an impurity removal mechanism, and the impurity removal mechanism quantitatively, adsorbing, cleaning, and screening the mica powder after cooling to obtain a mica coarse powder A; step 2, adding water to the mica powder A obtained in step 1 to a solid content of 28 to 53%, making a suspension, and then adding it to a colloid grinder, wet grinding for 1 to 2 hours to obtain a grinding liquid B; step 3, adding the grinding liquid B obtained in step 2 to a hydrochloric acid solution with a concentration of 13 to 33%, heating to 82 to 98° C., and then keeping warm and stirring for 0.8 to 1.5 hours, Then cool to 65-75°C, add ethanol solution until the alcohol content is 51-64%, keep warm and stir for 1-2 hours, let stand for 4-8 hours, and separate to obtain precipitate C; step 4, dehydrate the precipitate C obtained in step 3 by a high-speed centrifuge with a rotation speed of 10000-12000r / min, place it in an oven at 100-180°C and dry it to constant weight, then break it up to obtain the required mica powder, and grind the mica powder into ultrafine mica powder through a grinding device; the impurity removal mechanism in step 2 adopts physical adsorption treatment; the amount of flotation agent added in step 2 is 55-89% of the total amount of mica coarse powder A; the impurity removal mechanism in step 2 needs to cool the mica ore raw material powder to 10 degrees.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method and system for preparing ultrafine mica powder, comprising a base and a grinding disc; a grinding disc is rotatably provided at the top of the base, a material guide assembly is provided in the grinding disc, and the material guide assembly has two states; in the first state, the material guide assembly is connected to the grinding disc through transmission, the material guide assembly moves upward to drive the shifting ring to bulge, and the material guide assembly feeds the mica powder into the grinding disc through the feeding assembly for cyclic grinding; in the second state, the material guide assembly moves downward to drive the shifting ring to concave, and the material guide assembly discharges the mica powder in the grinding disc; and also comprises a grinding assembly, which grinds the mica powder in the grinding disc and drives the grinding disc to move;

[0008] As a further description of the above technical solution:

[0009] The grinding assembly comprises a driving motor, a transmission seat is provided at one end of the driving motor, a grinding wheel is provided at one end of the transmission seat, a driving rod is provided at the other end of the transmission seat, a support rod is provided at the bottom end of the transmission seat, and the support rod is fixed on the base.

[0010] As a further description of the above technical solution:

[0011] The material guide assembly includes a material guide pipe, a rotating shaft rod is provided in the material guide pipe, a spiral blade is sleeved on the outer side of the rotating shaft rod, the bottom end of the rotating shaft rod is fixedly connected to a fixed block, the circumferential surface of the fixed block is fixedly connected to a connecting rod, and the end of the connecting rod away from the fixed block is fixedly connected to a gear ring; the end of the material guide pipe close to the grinding disc is movably connected to a hopper, a shifting ring piece is provided on the outer side of the hopper, and the end of the shifting ring piece away from the hopper is arranged on the grinding disc.

[0012] As a further description of the above technical solution:

[0013] The feeding assembly comprises a feeding bin, a feeding port is arranged at the top of the feeding bin, a material guide pipe is connected to one end of the feeding bin, and a discharge pipe is arranged at the bottom of the feeding bin.

[0014] As a further description of the above technical solution:

[0015] A transmission assembly is provided at one end of the transmission seat, and the transmission assembly is transmission-connected with an anti-overflow assembly, and the anti-overflow assembly scrapes off the mica powder adhered to the inner wall of the grinding disc.

[0016] As a further description of the above technical solution:

[0017] The transmission assembly comprises a limiting sleeve, the bottom end of the limiting sleeve is fixedly connected to a U-shaped frame, the bottom end of the U-shaped frame is fixedly connected to a connecting plate, and one end of the connecting plate is fixedly connected to a resisting roller.

[0018] As a further description of the above technical solution:

[0019] The anti-overflow component includes a limit frame, a rack 1 is slidably provided on the inner side of the limit frame, the top of the rack 1 is fixedly connected to a scraper, one end of the rack 1 is fixedly connected to a support spring, and the support spring is fixed on the limit frame, one end of the rack 1 is meshed with a positioning gear, the other end of the positioning gear is meshed with rack 2, the top of the rack 2 is fixedly connected to a support column, and the top of the support column is fixedly connected to a connecting ring.

[0020] The present invention provides a method and system for preparing ultrafine mica powder, which has the following characteristics:

[0021] Beneficial effects:

[0022] In the present invention, the mica powder and the grinding component are fitted and gathered together by the raised structure of the shifting ring, so that the grinding effect of the grinding component is improved, and the mica powder overflowing from the shifting ring is circulated again into the grinding disk for grinding through the material guide component, so that the mica powder is circulated and finely ground in the grinding disk, so that the mica powder is more uniform and the mica powder is ground more finely, and the material guide component is manually moved downward again, so that the shifting ring connected to the material guide component is concave, and the driving component is moved in the opposite direction, so that the material guide component discharges the mica powder in the grinding disk, thereby improving the flexibility of the device when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A flow chart of a method for preparing ultrafine mica powder proposed by the present invention;

[0024] Figure 2 The present invention is a flow chart of a system for preparing ultrafine mica powder;

[0025] Figure 3 It is a structural schematic diagram of a system for preparing ultrafine mica powder in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the material guiding component in the present invention;

[0027] Figure 5 For the present invention Figure 4 The local schematic diagram of the A in the middle;

[0028] Figure 6 For the present invention Figure 4 The local schematic diagram of point B in the middle;

[0029] Figure 7 It is a schematic diagram of the structure of the grinding assembly in the present invention;

[0030] Figure 8 For the present invention Figure 7 Partial schematic diagram of point C in the middle.

[0031] Legend: 1. Base; 11. Transmission gear rod; 12. Support rod; 2. Grinding disc; 3. Grinding assembly; 31. Drive motor; 32. Transmission seat; 33. Grinding wheel; 34. Transmission rod; 4. Feed assembly; 41. Feed bin; 42. Feed port; 43. Discharge pipe; 5. Material guide assembly; 51. Material guide pipe; 511. Feed trough; 52. Rotating shaft rod; 53. Spiral blade; 54. Fixed block; 55. Connecting rod; 56. Gear ring; 57. Hopper; 58. Ring plate; 6. Transmission assembly; 61. Limit sleeve; 62. U-shaped frame; 63. Connecting plate; 64. Roller; 7. Overflow prevention assembly; 71. Limit frame; 72. Rack 1; 73. Positioning gear; 74. Rack 2; 75. Support column; 76. Connecting ring; 77. Support spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-2 , a method for preparing ultrafine mica powder, characterized in that it comprises the following steps: step 1, selecting high-quality mica ore raw materials, and adding the mica ore raw materials to a hydraulic crusher, coarsely crushing to a particle size of 1 to 5 mm, removing impurities through an impurity removal mechanism, and the impurity removal mechanism quantitatively, adsorbing, cleaning, and screening the mica powder after cooling to obtain a mica coarse powder A; step 2, adding water to the mica powder A obtained in step 1 to a solid content of 28 to 53%, making a suspension and then adding it to a colloid grinder, wet grinding for 1 to 2 hours, to obtain a grinding liquid B; step 3, adding the grinding liquid B obtained in step 2 to a hydrochloric acid solution with a concentration of 13 to 33%, heating to 82 to 98° C. and then keeping warm and stirring for 0.8 to 1.5 hours, Then cool to 65-75°C, add ethanol solution until the alcohol content is 51-64%, keep warm and stir for 1-2h, let stand for 4-8h, and separate to obtain precipitate C; step 4, dehydrate the precipitate C obtained in step 3 by a high-speed centrifuge with a rotation speed of 10000-12000r / min, place it in an oven at 100-180°C and dry it to constant weight, then break it up to obtain the required mica powder, and grind the mica powder into ultrafine mica powder through a grinding device; the impurity removal mechanism in step 2 adopts physical adsorption treatment; the amount of flotation agent added in step 2 is 55-89% of the total amount of mica coarse powder A; the impurity removal mechanism in step 2 needs to cool the mica ore raw material powder to 10 degrees.

[0034] Reference Figure 3-8 , a system for preparing ultrafine mica powder, comprising a base 1 and a grinding disc 2; a grinding disc 2 is rotatably provided at the top of the base 1, a material guide assembly 5 is provided in the grinding disc 2, and the material guide assembly 5 has two states; in the first state, the material guide assembly 5 is connected to the grinding disc 2 through a transmission, the material guide assembly 5 moves upward to drive the ring plate 58 to bulge, and the material guide assembly 5 feeds the mica powder into the grinding disc 2 through the feeding assembly 4 for cyclic grinding; in the second state, the material guide assembly 5 moves downward to drive the ring plate 58 to be concave, and the material guide assembly 5 discharges the mica powder in the grinding disc 2; and also comprises a grinding assembly 3, the grinding assembly 3 grinds the mica powder in the grinding disc 2 and drives the grinding disc 2 to move;

[0035] The grinding wheel 2 is rotated to move the grinding wheel 2 upwards, and the grinding wheel 2 is driven to rotate. The guide assembly 5 arranged in the grinding wheel 2 is manually moved upwards, so that the ring piece 58 connected to the guide assembly 5 moves upwards and bulges, so that the raised structure of the ring piece 58 can fit the mica powder and the grinding assembly 3 together, thereby improving the grinding effect of the grinding assembly 3. The mica powder overflowing from the ring piece 58 is circulated into the grinding wheel 2 again through the guide assembly 5 for grinding, so that the mica powder is circulated and finely ground in the grinding wheel 2, so that the mica powder is more uniform and the grinding of the mica powder is more fine. The guide assembly 5 is manually moved downwards again, so that the ring piece 58 connected to the guide assembly 5 is concave, and the driving assembly is reversely moved, so that the guide assembly 5 discharges the mica powder in the grinding wheel 2, thereby improving the flexibility of the device when used, and the structure is simple, which is worthy of wide promotion.

[0036] The grinding assembly 3 includes a driving motor 31, a transmission seat 32 is provided at one end of the driving motor 31, a grinding wheel 33 is provided at one end of the transmission seat 32, a transmission rod 34 is provided at the other end of the transmission seat 32, a support rod 12 is provided at the bottom end of the transmission seat 32, and the support rod 12 is fixed on the base 1;

[0037] Specifically, the driving motor 31 in the grinding assembly 3 drives the transmission seat 32 to work, and the grinding wheel 33 and the transmission rod 34 connected to the transmission seat 32 move in opposite directions. The transmission seat 32 is a prior art and will not be described here. When the grinding wheel 33 grinds the mica powder in the grinding disc 2 driven by the transmission seat 32, the transmission rod 34 connected to the transmission seat 32 fits with the grinding disc 2, so that the grinding disc 2 drives the material guide assembly 5 through the transmission gear rod 11, so that the material guide assembly 5 performs cyclic grinding and discharge of the mica powder.

[0038] The material guide assembly 5 includes a material guide pipe 51, a rotating shaft rod 52 is arranged inside the material guide pipe 51, a spiral blade 53 is sleeved on the outer side of the rotating shaft rod 52, a fixed block 54 is fixedly connected to the bottom end of the rotating shaft rod 52, a connecting rod 55 is fixedly connected to the peripheral surface of the fixing block 54, and a gear ring 56 is fixedly connected to the end of the connecting rod 55 away from the fixing block 54; a hopper 57 is movably connected to the end of the material guide pipe 51 close to the grinding disc 2, a shifting ring piece 58 is arranged on the outer side of the hopper 57, and the end of the shifting ring piece 58 away from the hopper 57 is arranged on the grinding disc 2; the material feed assembly 4 includes a feed bin 41, a feed port 42 is arranged at the top of the feed bin 41, one end of the feed bin 41 is connected to the material guide pipe 51, and a discharge pipe 43 is arranged at the bottom of the feed bin 41;

[0039] Specifically, a feed trough 511 is provided at a position of the guide tube 51 in the guide assembly 5 near the hopper 57. When the mica powder overflows the raised shifting ring piece 58, the rotating shaft rod 52 fixedly connected to the gear ring 56 drives the spiral blade 53 to rotate under the drive gear rod 11 meshing with the grinding disc 2 through the gear ring 56, so that the mica powder is brought into the feed assembly 4 through the spiral blade 53 in the guide tube 51 through the feed trough 511. The feed bin 41 in the feed assembly 4 introduces the mica powder into the grinding disc 2 again through the discharge pipe 43, and the mica powder is cyclically ground by the grinding wheel 33. When the shifting ring piece 58 moves downward to form a concave structure, the driving motor 31 runs in the reverse direction, and the grinding disc 2 drives the spiral blade 53 in the guide tube 51 to rotate in the reverse direction through the gear rod 11, so as to discharge the fine mica powder in the grinding disc 2.

[0040] A transmission assembly 6 is provided at one end of the transmission seat 32, and the transmission assembly 6 is transmission-connected with an anti-overflow assembly 7, and the anti-overflow assembly 7 scrapes off the mica powder adhered to the inner wall of the grinding disc 2; the transmission assembly 6 includes a limiting sleeve 61, and the bottom end of the limiting sleeve 61 is fixedly connected to a U-shaped frame 62, and the bottom end of the U-shaped frame 62 is fixedly connected to a connecting plate 63, and one end of the connecting plate 63 is fixedly connected to a roller 64; the anti-overflow assembly 7 includes a limiting frame 71, and a rack 72 is slidingly provided on the inner side of the limiting frame 71, and the top of the rack 72 is fixedly connected to a scraper, and one end of the rack 72 is fixedly connected to a support spring 77, and the support spring 77 is fixed on the limiting frame 71, and one end of the rack 72 is meshed with a positioning gear 73, and the other end of the positioning gear 73 is meshed with a rack 2 74, and the top of the rack 2 74 is fixedly connected to a support column 75, and the top of the support column 75 is fixedly connected to a connecting ring 76;

[0041] Specifically, the limit sleeve 61 in the transmission assembly 6 is sleeved on the output shaft of the grinding wheel 33, and the limit sleeve 61 does not rotate synchronously with the output shaft. The roller 64 fixedly connected to the U-shaped frame 62 fixedly connected to the bottom end of the limit sleeve 61 is pressed against the connecting ring 76 in the anti-overflow assembly 7, and the support column 75 fixedly connected to the bottom end of the connecting ring 76 drives the rack 2 74 to move downward, so that the rack 2 74 drives the meshing rack 1 72 to move upward through the positioning gear 73, so that the scraper fixedly connected to the top of the rack 1 72 cleans the mica powder adhered to the inner wall of the grinding disk 2, thereby reducing the low grinding efficiency of the adhered mica powder.

[0042] Working principle: a grinding disc 2 is rotatably provided on the base 1, and the mica powder in the grinding disc 2 is finely ground through the grinding component 3 and the grinding disc 2 is driven to rotate. The material guide component 5 arranged in the grinding disc 2 is manually moved upward, so that the ring piece 58 connected to the material guide component 5 moves upward and bulges, so that the raised structure of the ring piece 58 can fit the mica powder and the grinding component 3 together, thereby improving the grinding effect of the grinding component 3. The mica powder overflowing from the ring piece 58 is circulated into the grinding disc 2 again through the material guide component 5 for grinding, so that the mica powder is circulated and finely ground in the grinding disc 2, so that the mica powder is more uniform and the grinding of the mica powder is more fine. The material guide component 5 is manually moved downward again, so that the ring piece 58 connected to the material guide component 5 is concave, and the driving component is moved in the opposite direction, so that the material guide component 5 discharges the mica powder in the grinding disc 2, thereby improving the flexibility of the device when used, and the structure is simple, which deserves wide promotion.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing ultrafine mica powder, characterized in that: The following steps are involved: Step 1, select high-quality mica ore raw materials, add the mica ore raw materials into a hydraulic crusher, and coarsely crush them into particles with a diameter of 1 to 5 mm. The impurities are removed by an impurity removal mechanism, and the impurity removal mechanism quantifies, adsorbs, cleans, and sieves the mica powder after cooling to obtain a coarse mica powder A; Step 2: Add water to the mica powder A obtained in step 1 until the solid content is 28-53%, prepare a suspension, and then add it into a colloid grinder. After wet grinding for 1-2 hours, a grinding liquid B is obtained; Step 3, adding the grinding liquid B obtained in step 2 to a hydrochloric acid solution with a concentration of 13-33%, heating to 82-98°C and stirring for 0.8-1.5h, then cooling to 65-75°C, adding ethanol solution to an alcohol content of 51-64%, stirring for 1-2h, standing for 4-8h, and separating to obtain a precipitate C; Step 4: Dehydrate the precipitate C obtained in step 3 by a high-speed centrifuge at a rotation speed of 10000-12000 r / min, dry it in an oven at 100-180° C. to constant weight, and then break it up to obtain the required mica powder. The mica powder is processed into ultrafine mica powder by cyclic grinding through a grinding device.

2. The method for preparing superfine mica powder according to claim 1, characterized in that: In the step 2, the impurity removal mechanism adopts physical adsorption treatment.

3. The method for preparing superfine mica powder according to claim 1, characterized in that: The amount of the flotation agent added in step 2 is 55-89% of the total amount of the mica coarse powder A.

4. The method for preparing ultrafine mica powder according to claim 1, characterized in that: In the step 2, the impurity removal mechanism needs to cool the mica ore raw material powder to 10 degrees.

5. A system for preparing ultrafine mica powder according to claims 1-4, to realize the method for preparing the above-mentioned ground ultrafine mica powder, characterized in that: It comprises a base (1) and a grinding disc (2); A grinding disc (2) is rotatably disposed at the top of the base (1), a material guide component (5) is disposed inside the grinding disc (2), and the material guide component (5) has two states; In the first state, the material guide component (5) is connected to the grinding disc (2) through transmission, the material guide component (5) moves upward to drive the ring plate (58) to bulge, and the material guide component (5) feeds the mica powder into the grinding disc (2) through the feeding component (4) for circulation grinding; In the second state, the material guide component (5) moves downward to drive the ring plate (58) to be concave, and the material guide component (5) discharges the mica powder in the grinding disc (2); It also comprises a grinding component (3), wherein the grinding component (3) grinds the mica powder in the grinding disc (2) and drives the grinding disc (2) to move.

6. A system for preparing ultrafine mica powder according to claim 5, characterized in that: The grinding assembly (3) comprises a driving motor (31), a transmission seat (32) is provided at one end of the driving motor (31), a grinding wheel (33) is provided at one end of the transmission seat (32), a driving rod (34) is provided at the other end of the transmission seat (32), a supporting rod (12) is provided at the bottom end of the transmission seat (32), and the supporting rod (12) is fixed on the base (1).

7. A system for preparing ultrafine mica powder according to claim 5, characterized in that: The material guide assembly (5) comprises a material guide tube (51), a rotating shaft rod (52) is arranged inside the material guide tube (51), a spiral blade (53) is sleeved on the outer side of the rotating shaft rod (52), a fixed block (54) is fixedly connected to the bottom end of the rotating shaft rod (52), a connecting rod (55) is fixedly connected to the circumference of the fixing block (54), and a gear ring (56) is fixedly connected to the end of the connecting rod (55) away from the fixing block (54); a hopper (57) is movably connected to the end of the material guide tube (51) close to the grinding disc (2), a shifting ring plate (58) is arranged on the outer side of the hopper (57), and the end of the shifting ring plate (58) away from the hopper (57) is arranged on the grinding disc (2).

8. A system for preparing ultrafine mica powder according to claim 5, characterized in that: The feed assembly (4) comprises a feed bin (41), a feed port (42) is provided at the top of the feed bin (41), one end of the feed bin (41) is connected to a material guide pipe (51), and a discharge pipe (43) is provided at the bottom of the feed bin (41).

9. A system for preparing ultrafine mica powder according to claim 6, characterized in that: A transmission assembly (6) is provided at one end of the transmission seat (32), and the transmission assembly (6) is transmission-connected to an anti-overflow assembly (7), and the anti-overflow assembly (7) scrapes off the mica powder adhered to the inner wall of the grinding disc (2).

10. A system for preparing ultrafine mica powder according to claim 9, characterized in that: The transmission assembly (6) comprises a limiting sleeve (61), the bottom end of the limiting sleeve (61) is fixedly connected to a U-shaped frame (62), the bottom end of the U-shaped frame (62) is fixedly connected to a connecting plate (63), and one end of the connecting plate (63) is fixedly connected to a resisting roller (64).

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