Preparation process of mica powder used based on cosmetics

Abstract

The invention discloses a mica powder preparation process based on cosmetic use, which comprises the following steps: finely selecting a high-quality mica ore raw material, adding the mica ore raw material into a hydraulic crusher, and carrying out coarse crushing to obtain coarse mica powder through an impurity removal mechanism; the preparation method comprises the following steps: adding water into mica powder to prepare a suspension, adding the suspension into a colloid grinder, carrying out wet grinding to obtain a grinding liquid, separating the grinding liquid to obtain a precipitate, drying the precipitate in a drying oven to constant weight, and scattering to obtain the required mica powder; according to the mica powder physical screening device, the material overturning assembly is overturned through the moving assembly, the materials are scattered to the material screening assembly to screen and adsorb other metal substances in the materials, the metal substances adsorbed in the material screening assembly are collected and cleaned through the reciprocating stroke of the moving assembly, and the high efficiency of physical screening during mica powder preparation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mica powder, in particular to a process for preparing mica powder for use in cosmetics. Background Art

[0002] Mica powder is a non-metallic mineral containing various components, primarily SiO2, typically around 49%, and Al2O3, around 30%. Mica powder exhibits excellent elasticity, toughness, insulation, high-temperature resistance, acid and alkali resistance, corrosion resistance, and strong adhesion. Mica powder is an excellent additive widely used in industries such as electrical appliances, welding rods, rubber, plastics, papermaking, paints, coatings, pigments, ceramics, cosmetics, and new building materials. Its unique pearlescent effect, crystal transparency, silky luster, and smooth texture give it excellent skin compatibility and adherence. As the cosmetics industry's preferred high-end powder raw material, mica powder is widely used in pressed powder, loose powder, eye shadow, liquid foundation, blush, and loose powder, among other applications.

[0003] The shortcomings of the existing technology are that, due to the simple dry method for preparing mica powder, the impurities and discoloration contained in the mica powder itself cannot be effectively removed, resulting in the removal effect of other metal impurities in the mica powder in the impurity removal process being not obvious, and the purity of the obtained mica powder is not high, and the effect is not good in the fields of high-end cosmetics and pearlescent pigments. Summary of the Invention

[0004] The purpose of the present invention is to provide a mica powder preparation process for use in cosmetics, in which a turning component is flipped by a moving component and the material is scattered onto a screening component to screen and adsorb other metal substances in the material, and the metal substances adsorbed in the screening component are collected and cleaned by the reciprocating stroke of the moving component, thereby improving the efficiency of physical screening during mica powder preparation.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a process for preparing mica powder for use in cosmetics, comprising the following steps:

[0006] S1. Select high-quality mica ore raw materials and add the mica ore raw materials to a hydraulic crusher for coarse crushing to a particle size of 1 to 5 mm. Use a centrifugal device to reduce the humidity of the mica powder and cooperate with a cleaning mechanism to remove impurities. The cleaning mechanism quantifies, adsorbs, cleans, and sieves the cooled mica powder to obtain a coarse mica powder A.

[0007] S2, adding water to the mica powder A obtained in step S1 to a solid content of 28-53% to prepare a suspension, and then adding the suspension to a colloid grinder. After wet grinding for 1-2 hours, a grinding liquid B is obtained;

[0008] S3, adding the grinding liquid B obtained in step S2 to a hydrochloric acid solution with a concentration of 13-33%, heating to 82-98°C and stirring at this temperature for 0.8-1.5 hours, then cooling to 65-75°C, adding ethanol solution to an alcohol content of 51-64%, stirring at this temperature for 1-2 hours, and standing for 4-8 hours to separate and obtain a precipitate C;

[0009] S4, dehydrating the precipitate C obtained in step S3 by a high-speed centrifuge at a rotation speed of 10000-12000 r / min, drying it in an oven at 100-180° C. to a constant weight, and then breaking it up to obtain the desired mica powder;

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

[0011] The amount of water added in step S2 is 4.3 to 6.8 times the total amount of the mica coarse powder A.

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

[0013] The amount of the flotation agent added in step S2 is 55-89% of the total amount of the mica coarse powder A.

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

[0015] In step S2, the impurity removal mechanism needs to cool the mica ore raw material to 10 degrees.

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

[0017] In step S2, the impurity removal mechanism adopts physical adsorption treatment.

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

[0019] In step S4, the mass ratio of the grinding liquid C to the hydrochloric acid solution is 1-1.6:9.5-15.

[0020] As a further description of the above technical solution:

[0021] The impurity removal mechanism includes a frame, a driving assembly is provided at one end of the frame, the driving assembly is transmission-connected to a moving assembly, a screening assembly is provided at one end of the moving assembly, a turning assembly is provided at the top of the screening assembly, and a screen is provided at the bottom of the screening assembly. The driving assembly drives the screening assembly in the moving assembly to reciprocate, and the moving assembly drives the turning assembly to flip and unload and remove impurities through the synchronously moving screening assembly.

[0022] As a further description of the above technical solution:

[0023] The top end of the frame is fixedly connected to a top plate, and the top plate is movably connected to the flip assembly. The bottom end of the frame is fixedly connected to a support plate, and a moving assembly is movably provided on the top end of the support plate. A rack arm is provided on the frame close to the top plate, and a guide rail plate is fixedly connected to one end of the frame close to the support plate.

[0024] As a further description of the above technical solution:

[0025] The driving assembly includes a driving motor, and both ends of the driving motor are symmetrically connected to a rotating shaft, one end of the rotating shaft is fixedly connected to an eccentric shaft, a connecting arm is connected to the eccentric shaft, and the connecting arm is movably connected to the screen; one end of the eccentric shaft is fixedly connected to a connecting rod, and one end of the connecting rod is fixedly connected to a transmission wheel, and the two transmission wheels are connected to a transmission chain.

[0026] As a further description of the above technical solution:

[0027] The turning assembly includes a pillar, and unloading plates are symmetrically fixedly connected at both ends of the pillar. Connecting rods are symmetrically fixedly connected at both ends of the pillar. One end of the connecting rod close to the unloading plate is fixedly connected to a half-tooth block. The connecting rod passes through the top plate and is fixedly connected to a limiting plate. One end of the limiting plate is fixedly connected to a torsion spring, and the other end of the torsion spring is fixed on the top plate.

[0028] The present invention provides a process for preparing mica powder for use in cosmetics, which has the following characteristics:

[0029] Beneficial effects:

[0030] In the present invention, the turning component is flipped by the moving component and the material is scattered onto the screening component to screen and adsorb other metal substances in the material, and the metal substances adsorbed in the screening component are collected and cleaned through the reciprocating stroke of the moving component, thereby improving the efficiency of physical screening during the preparation of mica powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a mica powder preparation process for cosmetics proposed by the present invention;

[0032] Figure 2 Schematic diagram of the impurity removal mechanism steps in the present invention;

[0033] Figure 3 Schematic diagram of the structure of the impurity removal mechanism of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the material turning component in the present invention;

[0035] Figure 5 For the present invention Figure 4 A partial schematic diagram of the middle part;

[0036] Figure 6 For the present invention Figure 4 Partial schematic diagram at point B in the middle;

[0037] Figure 7 Schematic diagram of the structure of the screening material assembly in the present invention;

[0038] Figure 8 For the present invention Figure 7 Partial schematic diagram at point C in the middle;

[0039] Figure 9 For the present invention Figure 7 The local schematic diagram of point D in the middle;

[0040] Figure 10 For the present invention Figure 7 Partial schematic diagram at point E in the middle.

[0041] Legend: 1. Frame; 11. Top plate; 12. Guide plate; 13. Rack arm; 14. Support plate; 2. Turning assembly; 21. Support column; 22. Discharge plate; 23. Connecting rod; 24. Half tooth block; 25. Limit plate; 26. Torsion spring; 3. Screen assembly; 31. Fixed frame; 32. Magnetic strip; 33. Discharge chute; 34. Spiral blade; 35. Rotating shaft; 36. Tooth disc; 37. Drive gear shaft; 38. Baffle; 39. Scraper; 4. Screen; 5. Drive assembly; 51. Drive motor; 52. Rotating shaft ;53. Transmission wheel; 54. Eccentric shaft; 55. Connecting arm; 56. Connecting rod; 57. Transmission chain; 6. Moving assembly; 61. Moving plate; 62. Bracket; 63. Support column; 64. Rack block; 65. Fixed ear; 66. Tension spring; 67. Gear block; 68. Movable arm; 69. Movable rod; 610. Return spring; 611. Limit block; 612. Connecting bar; 613. Rack rod; 614. Rotating wheel; 615. Linkage; 6151. Disc; 6152. Positioning rod; 6153. Connecting ring. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0043] Reference Figure 1-10 A process for preparing mica powder for use in cosmetics comprises the following steps:

[0044] S1. Select high-quality mica ore raw materials and add the mica ore raw materials to a hydraulic crusher for coarse crushing to a particle size of 1 to 5 mm. Use a centrifugal device to reduce the humidity of the mica powder and cooperate with a cleaning mechanism to remove impurities. The cleaning mechanism quantifies, adsorbs, cleans, and sieves the cooled mica powder to obtain a coarse mica powder A.

[0045] S2, adding water to the mica powder A obtained in step S1 to a solid content of 28-53% to prepare a suspension, and then adding the suspension to a colloid grinder. After wet grinding for 1-2 hours, a grinding liquid B is obtained;

[0046] S3, adding the grinding liquid B obtained in step S2 to a hydrochloric acid solution with a concentration of 13-33%, heating to 82-98°C and stirring at this temperature for 0.8-1.5 hours, then cooling to 65-75°C, adding ethanol solution to an alcohol content of 51-64%, stirring at this temperature for 1-2 hours, and standing for 4-8 hours to separate and obtain a precipitate C;

[0047] S4. Dehydrate the precipitate C obtained in step S3 by a high-speed centrifuge at a rotation speed of 10,000 to 12,000 r / min, dry it in an oven at 100 to 180° C. to a constant weight, and then break it up to obtain the desired mica powder.

[0048] In step S2, the amount of water added is 4.3 to 6.8 times the total amount of the mica coarse powder A; the amount of the flotation agent added in step S2 is 55 to 89% of the total amount of the mica coarse powder A; the impurity removal mechanism in step S2 needs to cool the mica ore raw material to 10 degrees; the impurity removal mechanism in step S2 adopts physical adsorption treatment; and the mass ratio of the grinding liquid C to the hydrochloric acid solution in step S4 is 1 to 1.6:9.5 to 15.

[0049] The impurity removal mechanism includes a frame 1, a driving component 5 is provided at one end of the frame 1, the driving component 5 is transmission-connected to a moving component 6, a screening component 3 is provided at one end of the moving component 6, a turning component 2 is provided at the top of the screening component 3, and a screen 4 is provided at the bottom of the screening component 3. The driving component 5 drives the screening component 3 located in the moving component 6 to reciprocate, and the moving component 6 drives the turning component 2 to flip and unload, and removes impurities through the synchronously moving screening component 3;

[0050] Specifically, the frame 1 is a rectangular frame structure, and the driving component 5 fixedly connected to the frame 1 drives the screening component 3 connected to the moving component 6 to reciprocate laterally along the screen 4. The moving component 6 drives the turning component 2 to rotate during the movement stroke, so that the material laid on the turning component 2 is scattered downward onto the screening component 3, and the screening component 3 adsorbs the metal adsorbable foreign matter contained in the scattered material, and collects and cleans the metal foreign matter through the scraper 39 located in the screening component 3 during the movement stroke of the moving component 6. The device flips the turning component 2 through the moving component 6 and causes the material to be scattered onto the screening component 3 to screen and adsorb other metal substances in the material, and collects and cleans the metal substances adsorbed in the screening component 3 through the reciprocating stroke of the moving component 6, thereby improving the efficiency of physical screening during mica powder preparation;

[0051] The top of the frame 1 is fixedly connected to a top plate 11, and the top plate 11 is movably connected to the flip assembly. The bottom of the frame 1 is fixedly connected to a support plate 14, and the top of the support plate 14 is movably provided with a moving assembly 6. A rack arm 13 is provided on the side of the frame 1 close to the top plate 11, and a guide plate 12 is fixedly connected to the end of the frame 1 close to the support plate 14.

[0052] The driving assembly 5 includes a driving motor 51, and the two ends of the driving motor 51 are symmetrically connected to the rotating shaft 52. One end of the rotating shaft 52 is fixedly connected to the eccentric shaft 54. The eccentric shaft 54 ​​is internally connected to a connecting arm 55, and the connecting arm 55 is movably connected to the screen 4; one end of the eccentric shaft 54 ​​is fixedly connected to a connecting rod 56, and one end of the connecting rod 56 is fixedly connected to a transmission wheel 53. The two transmission wheels 53 are transmission-connected by a transmission chain 57.

[0053] Specifically, the top plate 11 fixedly connected in the frame 1 is used to support the turning assembly 2, and the support plate 14 fixedly connected in the frame 1 is used to support the movement of the moving assembly 6. The driving motor 51 in the driving assembly 5 drives the rotating shaft 52 to rotate, and the eccentric shaft 54 ​​fixedly connected at one end of the rotating shaft 52 and the transmission wheel 53 rotate synchronously. The eccentric shaft 54 ​​is connected to the screen 4 through the connecting arm 55 under the drive of the driving motor 51 to shake, so that the screen 4 can screen the material particles. The transmission chain 57 set on the transmission wheel 53 drives the moving assembly 6 to reciprocate on the support plate 14, so that the mobile assembly 6 screening assembly 3 can adsorb and remove impurities from the material;

[0054] The turning assembly 2 includes a support 21, with unloading plates 22 symmetrically fixedly connected at both ends of the support 21, and connecting rods 23 symmetrically fixedly connected at both ends of the support 21. The end of the connecting rod 23 close to the unloading plate 22 is fixedly connected to a half tooth block 24. The connecting rod 23 passes through the top plate 11 and is fixedly connected to a limit plate 25. One end of the limit plate 25 is fixedly connected to a torsion spring 26, and the other end of the torsion spring 26 is fixed to the top plate 11.

[0055] Specifically, the pillars 21 in the turning assembly 2 are symmetrically fixedly connected to the discharge plate 22. The half tooth block 24 in the connecting rod 23 fixedly connected to the pillar 21 drives the connecting rod 23 to rotate under the movement of the rack block 64 in the moving assembly 6, so that the discharge plate 22 fixedly connected to the pillar 21 rotates, so that the material laid flat on the discharge plate 22 is turned over and scattered;

[0056] The moving assembly 6 includes a moving plate 61, the top of the moving plate 61 is fixedly connected to a support column 63, the top of the support column 63 is fixedly connected to a rack block 64, and the rack block 64 is meshed with the half rack block 24, one end of the rack block 64 is fixedly connected to a fixing ear 65, the bottom end of the fixing ear 65 is fixedly connected to a tension spring 66, the bottom end of the tension spring 66 is fixedly connected to a connecting bar 612, the bottom end of the connecting bar 612 is fixedly connected to a rack rod 613, the other end of the connecting bar 612 is rotatably connected to a rotating wheel 614, and the rotating wheel 614 is in contact with the guide plate 12;

[0057] One end of the movable plate 61 is fixedly connected to a bracket 62, and the bracket 62 is slidably connected to the support plate 14. The bottom end of the movable plate 61 is rotatably connected to a linkage 615. The linkage 615 includes a disk 6151. One end of the disk 6151 is fixedly connected to a positioning rod 6152. The positioning rod 6152 is sleeved with a connecting ring 6153. The connecting ring 6153 is fixed to the transmission chain 57.

[0058] A gear block 67 is symmetrically provided at one end of the movable plate 61. A movable arm 68 is fixedly connected to one end of the gear block 67. A movable rod 69 is slidably connected inside the movable arm 68. A scraper 39 is provided at one end of the movable rod 69. The other end of the movable rod 69 passes through the movable arm 68 and is fixedly connected to a return spring 610. One end of the return spring 610 is fixedly connected to a limit block 611, and the limit block 611 is fixed to the movable arm 68.

[0059] The screening assembly 3 includes a fixed frame 31, a discharge chute 33 is provided on the inner side of the fixed frame 31, a rotating shaft rod 35 is provided in the discharge chute 33, a spiral leaf 34 is provided on the outer side of the rotating shaft rod 35, and the spiral leaf 34 is provided in the discharge chute 33, and a toothed disc 36 is fixedly connected to both ends of the rotating shaft rod 35, and the toothed disc 36 is rotatably connected to the movable plate 61, and a transmission gear shaft 37 is engaged with one end of the toothed disc 36, and the transmission gear shaft 37 is engaged with the rack arm 13; the top of the fixed frame 31 is symmetrically fixedly connected to the magnetic strips 32, and the top of the two magnetic strips 32 is provided with a baffle 38, and the baffle 38 is fixed to the support column 63;

[0060] Specifically, the movable plate 61 in the movable assembly 6 is fixedly connected to the fixed frame 31 in the screening assembly 3. When the rack block 64 fixedly connected to the top of the movable plate 61 moves, the rack block 64 engages with the half-tooth block 24 and rotates, causing the unloading plate 22 to flip over. The gear block 67 symmetrically arranged at one end of the movable plate 61 is engaged with the rack rod 613. When the rotating wheel 614 rests on the raised parts at both ends of the guide rail plate 12, the rotating wheel 614 moves in a directional manner through the rack rod 613 fixedly connected by the connecting bar 612, causing the two gear blocks 67 engaged with the rack rod 613 to rotate, and the movable arm 68 fixedly connected to the gear block 67 swings. The scraper 39 is attached to the surface of the magnetic strip 32 by the supporting spring on the movable arm 68, and the movable arm 68 drives the scraper 39 to adsorb the surface of the magnetic strip 32 The metal materials are scraped off and introduced into the discharge chute 33 under the action of the scraper 39. The spiral blade 34 fixedly connected to the rotating shaft 35 in the discharge chute 33 is engaged with the rack arm 13 through the transmission gear shaft 37 engaged with the toothed disk 36. When the movable plate 61 moves, the spiral blade 34 rotates to directionally clean the metal materials in the discharge chute 33, which is convenient for cleaning the adsorbed metal materials; the linkage assembly arranged at the bottom end of the movable plate 61 is connected to the transmission chain 57 for transmission, wherein the disc 6151 is connected to the movable plate 61 through the U-shaped fixing frame 31, and the limiting ring of the positioning rod 6152 in the disc 6151 is connected to the transmission chain 57, so that the driving assembly 5 drives the movable plate 61 to move in a directional manner along the support plate 14 through the transmission chain 57 set on the transmission wheel 53.

[0061] Working principle: The driving assembly 5 fixedly connected to the frame 1 drives the screening assembly 3 connected to the moving assembly 6 to reciprocate laterally along the screen 4. The moving assembly 6 drives the turning assembly 2 to rotate during the movement, so that the material laid on the turning assembly 2 is scattered downward onto the screening assembly 3. The screening assembly 3 absorbs the metal adsorbable foreign matter contained in the scattered material, and collects and cleans the metal foreign matter through the scraper 39 located in the screening assembly 3 during the movement of the moving assembly 6. Among them, the moving plate 61 in the moving assembly 6 is fixedly connected to the fixed frame 31 in the screening assembly 3. When the rack block 64 fixedly connected to the top of the movable plate 61 moves, the rack block 64 meshes with the half-tooth block 24 and rotates, causing the unloading plate 22 to flip over. The gear block 67 symmetrically arranged at one end of the movable plate 61 is meshed with the rack rod 613. When the rotating wheel 614 abuts against the protruding parts at both ends of the guide plate 12, the rotating wheel 614 moves in a directional manner through the rack rod 613 fixedly connected by the connecting bar 612, causing the two gear blocks 67 meshed with the rack rod 613 to rotate, and the movable arm 68 fixedly connected to the gear block 67 swings, and the scraper 39 is supported by the support spring on the movable arm 68. The movable arm 68 is attached to the surface of the magnetic strip 32, and the scraper 39 is driven by the movable arm 68 to scrape off the metal material adsorbed on the surface of the magnetic strip 32. The metal material is guided into the discharge chute 33 under the action of the scraper 39. The spiral leaf 34 fixedly connected to the rotating shaft 35 in the discharge chute 33 is engaged with the transmission gear shaft 37 engaged with the rack arm 13 through the gear plate 36. When the movable plate 61 moves, the spiral leaf 34 rotates to clean the metal material in the discharge chute 33 in a direction, so as to facilitate the cleaning of the adsorbed metal material; the linkage component arranged at the bottom end of the movable plate 61 is connected to the transmission chain 57, wherein the disc 61 is connected to the transmission chain 57. 51 is connected to the movable plate 61 through the U-shaped fixing frame 31, and the limiting ring of the positioning rod 6152 in the disc 6151 is connected to the transmission chain 57, so that the driving component 5 drives the movable plate 61 to move in a directional manner along the support plate 14 through the transmission chain 57 set on the transmission wheel 53; this device flips the turning component 2 through the moving component 6 and scatters the material onto the screening component 3 to screen and adsorb other metal substances in the material, and collects and cleans the metal substances adsorbed in the screening component 3 through the reciprocating stroke of the moving component 6, thereby improving the efficiency of physical screening during mica powder preparation.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A process for preparing mica powder for use in cosmetics, characterized in that: The following steps are involved: S1. 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. Use a centrifugal device to reduce the humidity of the mica powder and cooperate with a cleaning mechanism to remove impurities. The cleaning mechanism quantifies, adsorbs, cleans, and sieves the cooled mica powder to obtain a coarse mica powder A. S2, adding water to the mica powder A obtained in step S1 until the solid content is 28-53%, making a suspension, and then adding it into a colloid grinder, and wet grinding for 1-2 hours to obtain a grinding liquid B; S3, adding the grinding liquid B obtained in step S2 to a hydrochloric acid solution with a concentration of 13-33%, heating to 82-98°C, stirring at this temperature for 0.8-1.5h, then cooling to 65-75°C, adding ethanol solution to an alcohol content of 51-64%, stirring at this temperature for 1-2h, standing for 4-8h, and separating to obtain a precipitate C; S4. Dehydrate the precipitate C obtained in step S3 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 desired mica powder.

2. A process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: The amount of water added in step S2 is 4.3 to 6.8 times the total amount of the mica coarse powder A.

3. A process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: The amount of the flotation agent added in step S2 is 55-89% of the total amount of the mica coarse powder A.

4. A process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: In step S2, the impurity removal mechanism needs to cool the mica ore raw material powder to 10 degrees.

5. The process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: In step S2, the impurity removal mechanism adopts physical adsorption treatment.

6. The process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: In step S4, the mass ratio of the grinding liquid C to the hydrochloric acid solution is 1-1.6:9.5-15.

7. The process for preparing mica powder for use in cosmetics according to claim 1, characterized in that: The impurity removal mechanism comprises a frame (1), one end of the frame (1) is provided with a driving assembly (5), the driving assembly (5) is connected to a moving assembly (6) in a transmission manner, one end of the moving assembly (6) is provided with a screening assembly (3), the top end of the screening assembly (3) is provided with a turning assembly (2), the bottom end of the screening assembly (3) is provided with a screen (4), the driving assembly (5) drives the screening assembly (3) located in the moving assembly (6) to reciprocate, the moving assembly (6) drives the turning assembly (2) to turn over and unload, and removes impurities through the synchronously moving screening assembly (3).

8. A process for preparing mica powder for use in cosmetics according to claim 7, characterized in that: The top end of the frame (1) is fixedly connected to a top plate (11), and the top plate (11) is movably connected to a flip assembly; the bottom end of the frame (1) is fixedly connected to a support plate (14), and a moving assembly (6) is movably provided at the top end of the support plate (14); a rack arm (13) is provided at a portion of the frame (1) close to the top plate (11), and a guide rail plate (12) is fixedly connected to one end of the frame (1) close to the support plate (14).

9. The process for preparing mica powder for use in cosmetics according to claim 7, characterized in that: The driving assembly (5) comprises a driving motor (51), wherein two ends of the driving motor (51) are symmetrically connected to a rotating shaft (52), one end of the rotating shaft (52) is fixedly connected to an eccentric shaft (54), a connecting arm (55) is connected in a driving manner inside the eccentric shaft (54), and the connecting arm (55) is movably connected to the screen (4); one end of the eccentric shaft (54) is fixedly connected to a connecting rod (56), one end of the connecting rod (56) is fixedly connected to a transmission wheel (53), and the two transmission wheels (53) are connected in a driving manner to a transmission chain (57).

10. The process for preparing mica powder for use in cosmetics according to claim 7, characterized in that: The material turning assembly (2) comprises a pillar (21), and the two ends of the pillar (21) are symmetrically fixedly connected to a discharge plate (22), and the two ends of the pillar (21) are symmetrically fixedly connected to a connecting rod (23), and one end of the connecting rod (23) close to the discharge plate (22) is fixedly connected to a half tooth block (24), and the connecting rod (23) passes through the top plate (11) and is fixedly connected to a limit plate (25), and one end of the limit plate (25) is fixedly connected to a torsion spring (26), and the other end of the torsion spring (26) is fixed on the top plate (11).

Images