A spherical quartz powder purification equipment

Abstract

The present invention discloses a spherical quartz powder purification process and purification equipment, comprising the following steps: S1: quartz ore is coarsely crushed to less than 25mm by a cone crusher, then ground by a ball mill and screened out suitable particle size by a screening drum; S2: quartz particles are scrubbed with a pulp concentration of 50%-60%, and soil is separated synchronously; S3: two-stage high gradient magnetic separators are used to remove ferromagnetic minerals and magnetic impurities in quartz; S4: soaked in a mixed solution of hydrochloric acid and sulfuric acid at 60-75°C for 4-8 hours, dehydrated and dried after removing residual metal oxidation. The present invention is pre-treated by crushing and screening the quartz ore, screening out suitable quartz powder particles for cleaning, and then using two-stage high gradient magnetic separators to fully remove the different strengths of ferromagnetism, magnetism and mixture impurities mixed in the quartz powder, avoid the consumption of mixed liquid by impurities in the later stage, and the present invention effectively reduces the multiple separations of materials in the treatment process.

Description

Technical Field

[0001] The invention relates to the technical field of quartz powder, and in particular to a spherical quartz powder purification process and purification equipment. Background Art

[0002] Quartz powder is made from natural quartz and processed through processes such as sorting, crushing, washing, purification, drying, iron removal, grinding, and grading. The main equipment for producing quartz powder includes stone crusher, crusher, vibrating screen, etc. After production, quartz powder needs to be purified to improve its performance. Screening mechanism is required during the purification process of quartz powder. Screening is an important step in the purification process of quartz powder. It is mainly used to remove large impurities and fine powder, laying a good foundation for subsequent steps.

[0003] For example, Chinese patent application number 202310272662.3, entitled "A Quartz Sand Purification Process," discloses a quartz sand purification process comprising the following steps: Step 1: Crushing quartz sand ore to a particle size of less than 0.3 mm to obtain ore particles; Step 2: Cleaning the ore particles to remove mud and moisture from the particles to obtain an intermediate A; Step 3: Adding a foaming agent to water, adding it to the intermediate A after complete dissolution, and stirring thoroughly; Step 4: Adding dilute sulfuric acid while stirring to remove surface foam, filtering, and drying to obtain an intermediate B; Step 5: Adding mixed acid to the intermediate B for soaking, washing until neutral, and drying to obtain an intermediate C; Step 6: Adding the intermediate C to a magnetic separation device for magnetic separation to obtain a finished quartz sand product. The present invention enables rapid magnetic separation by using a magnetic separation device.

[0004] The shortcomings of the existing technology are that during the production process of quartz powder, the iron impurities inside it need to be cleaned in order to improve the purity of the quartz powder. The existing quartz powder purification process is cumbersome and requires multiple separation and extraction, which is prone to insufficient separation, resulting in a lower purification rate in the later stage. In addition, the unscreened iron impurities in the quartz powder will easily react with the mixed acid, which increases the use of the mixed solution and increases the cost of purification. Summary of the Invention

[0005] The purpose of the present invention is to provide a spherical quartz powder purification process and purification equipment to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a spherical quartz powder purification process, comprising the following steps:

[0007] S1: The quartz ore is crushed to less than 25mm by a cone crusher, then ground by a ball mill and screened to the appropriate particle size by a screening drum;

[0008] S2: Scrub the quartz particles with a slurry concentration of 50%-60% and separate the soil simultaneously;

[0009] S3: Use two-stage high gradient magnetic separator to remove ferromagnetic minerals and magnetic impurities in quartz;

[0010] S4: Soak in a mixed solution of hydrochloric acid and sulfuric acid at 60-75°C for 4-8 hours to remove residual metal oxides and then dehydrate and dry.

[0011] A spherical quartz powder purification device is used to implement the above-mentioned spherical quartz powder purification method, the screening drum is divided into a storage space and a processing space by a top plate, and the processing space is divided into a filter material space and a waste material space by a partition assembly; a support rod is rotatably connected to the top plate, and a rotating ring is rotatably connected in the screening drum, and multiple groups of screening mechanisms are arranged between the support rod and the rotating ring; it also includes a dredging assembly, which is arranged on the top plate; when the support rod rotates, the screening mechanism located in the filter material space rotates and shakes to achieve screening, and the screening mechanism flips when switching between the filter material space and the waste space, and the flipped screening mechanism is dredged by the dredging assembly.

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

[0013] The screening mechanism includes a fixed cylinder fixedly connected to the support rod, a connecting rod 1 is slidably connected to the fixed cylinder, a rotating cylinder is rotatably connected to the rotating ring, a connecting rod 2 is slidably connected to the rotating cylinder, a screening frame is provided between the connecting rod 1 and the connecting rod 2, and a limiting rod is fixedly connected to the connecting rod 1.

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

[0015] The top plate is provided with a track groove, which is connected end to end by an arc groove part and a wave groove part, and the limiting rod is slidably connected in the track groove.

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

[0017] The screening drum is provided with a rotating assembly for driving the drum to turn over. The rotating assembly comprises two arc-shaped tooth plates fixedly connected in the screening drum.

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

[0019] A limiting unit is provided on the rotating ring, and the limiting unit includes a worm rotatably connected to the rotating ring, a worm wheel is fixedly connected to the rotating cylinder, the worm is meshed with the worm wheel, and a gear 1 is also fixedly connected to the worm, and the gear 1 is meshed with two arc-shaped tooth plates in sequence during its movement.

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

[0021] The dredging assembly includes a dredging rod slidably connected to the top plate, and the bottom end of the dredging rod is fixedly connected to the dredging disk; a rotating column is rotatably connected to the top plate, and a corrugated ring groove is provided on the rotating column. The top end of the dredging rod is fixedly connected to a sliding rod, and the sliding rod is slidably connected in the corrugated ring groove.

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

[0023] A driving assembly is provided on the top plate, and the driving assembly includes a driving rod rotatably connected to the top plate, and the driving rod is fixedly connected to the residual tooth plate 1 and the residual tooth plate 2; a gear 2 is provided on the support rod, and the gear 2 is engaged with the residual tooth plate 1; a gear 3 is fixedly connected to the rotating column, and the gear 3 is engaged with the residual tooth plate 2.

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

[0025] The partition assembly comprises a fixed partition frame fixedly connected to the screening drum, and two baffles are slidably connected in the fixed partition frame.

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

[0027] The material storage space is communicated with the filter material space through an open pipe, and a time switch is provided on the open pipe.

[0028] In the above technical solution, the present invention provides a spherical quartz powder purification process and purification equipment with the following beneficial effects:

[0029] The present invention performs pretreatment such as crushing and screening on the quartz ore, screens out suitable quartz powder particles for cleaning, and then uses a two-stage high-gradient magnetic separator to fully remove ferrous, magnetic and mixed impurities of different strengths mixed in the quartz powder, thereby avoiding the consumption of the mixed liquid by the impurities in the later stage. The present invention effectively reduces the multiple separations of substances in the treatment process and the use of the treatment liquid, thereby improving its purification efficiency and purity and reducing its purification cost.

[0030] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0031] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 A longitudinal sectional view of the internal structure of a screening drum according to an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the connection between the support rod, the screening mechanism, and the swivel structure provided in an embodiment of the present invention;

[0035] Figure 3 A schematic top view of a top plate structure provided by an embodiment of the present invention;

[0036] Figure 4 A bottom view schematic diagram of a top plate structure provided by an embodiment of the present invention;

[0037] Figure 5 A schematic structural diagram of a screening mechanism provided in an embodiment of the present invention;

[0038] Figure 6 Schematic diagram of the exploded structure connection between the drive assembly, support rod and dredging assembly provided in an embodiment of the present invention;

[0039] Figure 7 A schematic diagram of the structure of a rotating column provided in an embodiment of the present invention;

[0040] Figure 8 for Figure 4 Enlarged view of point A in the middle;

[0041] Figure 9 for Figure 5 Enlarged view of point B in the middle.

[0042] Description of reference numerals:

[0043] 1. Screening drum; 11. Top plate; 12. Storage space; 13. Filter space; 14. Waste space; 15. Support rod; 16. Rotating ring; 21. Fixed drum; 22. Connecting rod 1; 23. Rotating drum; 24. Connecting rod 2; 25. Screening frame; 26. Limiting rod; 3. Track groove; 4. Arc tooth plate; 51. Worm; 52. Worm gear; 53. Gear 1; 61. Dredging rod; 62. Dredging disk; 63. Rotating column; 64. Corrugated ring groove; 65. Sliding rod; 71. Driving rod; 72. Residual tooth disk 1; 73. Residual tooth disk 2; 74. Gear 2; 75. Gear 3; 81. Fixed partition frame; 82. Baffle; 91. Open pipe. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] See also Figure 1-9 The present embodiment provides a spherical quartz powder purification process, comprising the following steps:

[0046] S1: The quartz ore is crushed to less than 25mm by a cone crusher, then ground by a ball mill and screened by a screening drum 1 to obtain the appropriate particle size;

[0047] S2: Scrub the quartz particles with a slurry concentration of 50%-60% and simultaneously separate the dirt. Extend the scrubbing time to 30-40 minutes at a slurry concentration of 50%-60%. The scrubbing machine simultaneously completes desludging and particle size separation, eliminating the need for separate grading equipment.

[0048] S3: A two-stage high-gradient magnetic separator is used to remove ferromagnetic minerals and magnetic impurities in quartz. A 6000 Gauss drum magnetic separator is used to remove strongly magnetic iron, and a 15000 Gauss high-gradient magnetic separator is used to remove weakly magnetic iron, replacing the gravity separation or flotation process.

[0049] S4: Soak in a mixed solution of hydrochloric acid and sulfuric acid at 60-75°C for 4-8 hours to remove residual metal oxides and then dehydrate and dry. Soak in hydrochloric acid + sulfuric acid (concentration 10-15%) at 60-75°C for 4-8 hours to simultaneously dissolve metal oxides and some non-metallic impurities, eliminating the need for complex high-temperature equipment for chlorination roasting. After acid leaching, dehydrate directly through a centrifuge and dry in a hot air dryer, eliminating the need for a separate concentration process.

[0050] A quartz powder purification and impurity removal device, which is used to implement the above-mentioned spherical quartz powder purification method, the screening drum 1 is divided into a storage space 12 and a processing space by a top plate 11, and the processing space is divided into a filter space 13 and a waste space 14 by a partition assembly. The screening drum 1 is an important structure required for quartz powder purification and impurity removal. It is mainly used to remove large impurities and fine powder, laying a good foundation for subsequent steps. By setting the filter space 13 and the waste space 14, different materials after filtration are stored separately. The partition assembly includes a fixed connection in the screening drum 1. The fixed partition frame 81 has two baffles 82 slidably connected in the fixed partition frame 81. The two baffles 82 in the fixed partition frame 81 are driven by the same driving source to move up and down intermittently. The storage space 12 is connected to the filter material space 13 through the open pipe 91. The open pipe 91 is provided with a timer switch. The storage space 12 is connected to the conveyor. The quartz powder raw material to be processed is conveyed to the storage space 12 in the screening drum 1 by the conveyor for storage. The storage space 12 is located in the upper part of the screening drum 1, the processing space is located in the lower part of the screening drum 1, and the filter material space 13 is connected to the filter material space 13. The quartz powder screened in the middle is transported to the next equipment for processing through the feeding pipe. A support rod 15 is rotatably connected to the top plate 11, and a rotating ring 16 is rotatably connected to the screening drum 1. Multiple groups of screening mechanisms are arranged between the support rod 15 and the rotating ring 16; it also includes a dredging component, which is arranged on the top plate 11; when the support rod 15 rotates, the screening mechanism located in the filter material space 13 rotates and shakes to achieve screening. The rotation and shaking of the screening mechanism can drive the quartz powder inside the screening mechanism to fully move, avoiding the situation where accumulation is caused by movement in one direction. The screening efficiency of the screening mechanism is improved. The screening mechanism flips when switching between the filter material space 13 and the waste material space 14, and the flipped screening mechanism is dredged by the dredging component. The material screened by the screening mechanism can be dumped by flipping the screening mechanism, so as to avoid the filtered material staying in the screening mechanism for a long time and affecting its subsequent screening effect. The flipping of the screening mechanism is carried out synchronously with the rotation stroke of the support rod 15, and multiple screening mechanisms will only flip after rotating and shaking in sequence, which optimizes the continuity of quartz powder screening and impurity removal.

[0051] In an embodiment further provided by the present invention, the screening mechanism includes a fixed cylinder 21 fixedly connected to the support rod 15, a connecting rod 1 22 is slidably connected in the fixed cylinder 21, a rotating cylinder 23 is rotatably connected to the rotating ring 16, a connecting rod 2 24 is slidably connected in the rotating cylinder 23, a screening frame 25 is arranged between the connecting rod 1 22 and the connecting rod 2 24, a limiting rod 26 is fixedly connected to the connecting rod 1 22, the connecting rod 1 22 slides horizontally in the fixed cylinder 21, and one end of the connecting rod 1 22 connected to the screening frame 25 is rotatably connected, the connecting rod 2 24 is also slidably connected in the rotating cylinder 23, but the connecting rod 2 24 and the screening frame 25 are fixedly connected.

[0052] Furthermore, a track groove 3 is provided on the top plate 11. The track groove 3 is connected end to end by an arc groove part and a wave groove part. The limit rod 26 is slidably connected in the track groove 3. The arc groove part of the track groove 3 is provided in the movement stroke of the screening mechanism when it is about to enter the waste space 14 and move from the waste space 14 to the material receiving point of the storage space 12, and the wave groove part is provided in the movement stroke of the screening mechanism after the material receiving is completed until it is about to enter the waste space 14. When the screening mechanism is located in the wave groove part of the track groove 3, the screening mechanism not only rotates with the support rod 15 but also slides horizontally, so that the quartz powder in the screening mechanism can be fully moved, which is convenient for screening and removing impurities.

[0053] Furthermore, the screening drum 1 is provided with a rotating assembly that drives the rotating drum 23 to flip over. The rotating assembly includes two arc-shaped tooth plates 4 fixedly connected to the screening drum 1. The arc-shaped tooth plates 4 are arranged in the grooves on the inner wall of the screening drum 1, and the two arc-shaped tooth plates 4 are arranged in the waste space 14. When the screening mechanism enters the waste space 14, it flips under the action of the arc-shaped tooth plates 4, thereby realizing the dumping of the screened waste.

[0054] In an embodiment further provided by the present invention, a limiting unit is provided on the rotating ring 16, and the limiting unit includes a worm 51 rotatably connected to the rotating ring 16, a worm wheel 52 fixedly connected to the rotating drum 23, the worm 51 and the worm wheel 52 meshing, and a gear 1 53 is also fixedly connected to the worm 51, and the gear 1 53 meshes with the two arc-shaped tooth plates 4 in sequence during the movement stroke. Through the self-locking function of the worm 51 and the worm wheel 52 in the limiting unit, the possibility of the screening mechanism shaking and flipping the screening frame 25 due to the shaking of the quartz powder during the rotation stroke of the support rod 15 can be avoided.

[0055] In the embodiment provided by the present invention, the dredging assembly includes a dredging rod 61 slidably connected to the top plate 11, and the bottom end of the dredging rod 61 is fixedly connected to the dredging disk 62; a rotating column 63 is rotatably connected to the top plate 11, and a corrugated annular groove 64 is provided on the rotating column 63. The top end of the dredging rod 61 is fixedly connected to a sliding rod 65, and the sliding rod 65 is slidably connected in the corrugated annular groove 64. The dredging disk 62 is arranged above the waste space 14, and is used to knock and dredge the screening mechanism after it is flipped, so as to facilitate the falling of materials stuck in the screening frame 25.

[0056] Specifically, a driving assembly is provided on the top plate 11, and the driving assembly includes a driving rod 71 rotatably connected to the top plate 11, and the driving rod 71 is fixedly connected to the residual tooth plate 1 72 and the residual tooth plate 2 73; a gear 2 74 is provided on the support rod 15, and the gear 2 74 is engaged with the residual tooth plate 1 72, and a gear 3 75 is fixedly connected to the rotating column 63, and the gear 3 75 is engaged with the residual tooth plate 2 73. The advantage of the driving assembly is that the rotation of the support rod 15 and the up and down movement of the dredging assembly can be realized by the rotation of a driving source, and the screening mechanism that has been flipped and stopped rotating can be reasonably controlled to be knocked and dredged during the interval of the screening mechanism receiving the material.

[0057] When the gear 2 74 is in the state of being moved downwards, the gear 1 72 is released and the gear 2 74 is in the state of being moved downwards, so that the gear 2 74 can be moved downwards to the position where the gear 2 74 is in the state of being moved downwards.

[0058] And in the rotation stroke of the support rod 15, the rest of the screening mechanism containing the quartz powder to be processed and in the filter material space 13 rotates synchronously. When it rotates, the limit rod 26 on the connecting rod 1 22 enters the wave groove part of the track groove 3, so that the connecting rod 1 22 pulls the screening frame 25 to shake, so that the quartz powder in the screening frame 25 is fully shaken to achieve screening. As the support rod 15 rotates, the screening mechanism that is about to enter the waste space 14 from the filter material space 13 will flip over, and when the support rod 15 rotates, the driving source that drives the baffle 82 to move downward works synchronously to retract the baffle 82 into the fixed partition frame 81. At this time, the screening mechanism is completed. When entering the waste space 14, the gear 1 53 connected to the worm 51 at the other end of the screening frame 25 meshes with the arc-shaped toothed plate 4, thereby driving the worm 51 to rotate and meshing with the worm wheel 52 to drive the rotating drum 23 to rotate. The rotation of the rotating drum 23 drives the screening frame 25 fixedly connected thereto to flip through the connecting rod 24, so that the screened materials remaining in the screening frame 25 can be poured into the waste space 14 for unified storage. The driving source for driving the baffle 82 to move downward is started with the operation of the support rod 15, and the stroke for the driving source to drive the baffle 82 to reset is started after a screening mechanism enters the waste space 14 from the filter material space 13 and before the screening mechanism flips over.

[0059] And when the flipped screening frame 25 enters the waste space 14, the residual tooth disk 1 72 does not engage with the gear 2 74 on the support rod 15, and the support rod 15 stops rotating. At this time, the driving rod 71 drives the residual tooth disk 2 73 to engage with the gear 3 75 on the rotating column 63, driving the rotating column 63 to rotate. The rotating column 63 rotates through the corrugated ring groove 64 provided thereon and cooperates with the sliding rod 65 provided on the dredging rod 61, driving the dredging rod 61 to drive the dredging disk 62 to move up and down to collide with the flipped screening frame 25, so that the material stuck on the screen of the screening frame 25 falls off, further improving the screening effect of the screening mechanism.

[0060] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A spherical quartz powder purification device, which is used to implement a spherical quartz powder purification process, characterized in that: The purification process comprises the following steps: S1: The quartz ore is crushed to less than 25mm by a cone crusher, then ground by a ball mill and screened to the appropriate particle size by a screening drum; S2: Scrub the quartz particles with a slurry concentration of 50%-60% and separate the soil simultaneously; S3: Use two-stage high gradient magnetic separator to remove ferromagnetic minerals and magnetic impurities in quartz; S4: Soaking in a mixed solution of hydrochloric acid and sulfuric acid at 60-75°C for 4-8 hours to remove residual metal oxidation and then dehydrating and drying; the screening cylinder is divided into a storage space and a processing space by a top plate, and the processing space is divided into a filter material space and a waste space by a partition assembly; The top plate is rotatably connected to a support rod, the screening drum is rotatably connected to a rotating ring, and multiple screening mechanisms are arranged between the support rod and the rotating ring; It also includes dredging components, which are all arranged on the top plate; When the support rod rotates, the screening mechanism located in the filter material space rotates and shakes to achieve screening. The screening mechanism flips when switching between the filter material space and the waste space, and the flipped screening mechanism is dredged by the dredging component. The screening mechanism includes a fixed cylinder fixedly connected to the support rod, a connecting rod 1 is slidably connected to the fixed cylinder, a rotating cylinder is rotatably connected to the rotating ring, a connecting rod 2 is slidably connected to the rotating cylinder, a screening frame is provided between the connecting rod 1 and the connecting rod 2, and a limiting rod is fixedly connected to the connecting rod 1; The screening drum is provided with a rotating assembly for driving the drum to flip, and the rotating assembly includes two arc-shaped tooth plates fixedly connected to the screening drum; The rotating ring is provided with a limiting unit, which includes a worm rotatably connected to the rotating ring, a worm wheel fixedly connected to the rotating drum, the worm meshing with the worm wheel, and a gear 1 fixedly connected to the worm, the gear 1 sequentially meshing with two arc-shaped tooth plates during its movement, and the worm and worm wheel can achieve self-locking; The top plate is provided with a track groove, which is connected end to end by an arc groove part and a wave groove part, and the limiting rod is slidably connected in the track groove.

2. A spherical quartz powder purification device according to claim 1, characterized in that, The dredging assembly includes a dredging rod slidably connected to the top plate, and the bottom end of the dredging rod is fixedly connected to the dredging disk; The top plate is rotatably connected to a rotating column, a corrugated ring groove is provided on the rotating column, and the top end of the dredging rod is fixedly connected to a sliding rod, and the sliding rod is slidably connected in the corrugated ring groove.

3. A spherical quartz powder purification device according to claim 2, characterized in that, The top plate is provided with a driving assembly, the driving assembly comprising a driving rod rotatably connected to the top plate, the driving rod being fixedly connected to the first and second residual tooth discs; The support rod is provided with a gear 2, which is engaged with the residual tooth disk 1. The rotating column is fixedly connected with a gear 3, which is engaged with the residual tooth disk 2.

4. A spherical quartz powder purification device according to claim 1, characterized in that, The partition assembly comprises a fixed partition frame fixedly connected in the screening drum, and two baffles are slidably connected in the fixed partition frame.

5. A spherical quartz powder purification device according to claim 1, characterized in that, The material storage space is communicated with the filter material space through an open pipe, and a time switch is provided on the open pipe.

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