Process for dry production of quartz sand for glass

Abstract

The application relates to the technical field of quartz sand production, in particular to a dry-process production process of quartz sand for glass, which comprises the following steps: S1, material preparation; S2, feeding; S3, primary crushing - jaw crushing; S4, mud removal through screening; S5, secondary crushing - hammer crushing; S6, precision screening; and S7, dry iron removal. Compared with the general existing process, the dry iron removal production of the quartz sand saves water resources and reduces production cost; through the material preparation and mud removal operation, the raw materials are treated, the treated materials are cleaner, the dry magnetic separator in the process is used, the magnetic plate inclination is adjusted to be greater than the repose angle of the materials, the materials slide off the magnetic plate, the iron powder is adsorbed on the belt by the magnetic plate, and the iron powder is separated from the materials.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of quartz sand production, and particularly relates to a dry production process of quartz sand for glass. BACKGROUND

[0002] Quartz sand is a quartz particle obtained by crushing quartzite, the quartzite is a non-metallic mineral and is a kind of silicate mineral with hardness, wear resistance and stable chemical properties, the quartz sand is milky white or colorless and translucent, and has a Mohs hardness of 7, glass is made of quartz sand as a main material, and the treatment of the quartz sand is an important process in glass production, and the quartz sand production process mainly includes a dry process and a wet process.

[0003] A dry production process of a fracturing proppant quartz sandstone block mine is disclosed in a Chinese patent (publication number CN112973935A), the patent technology uses quartz block ore as raw material, after conventional crushing and pulverizing, the quartz block ore is shaped and purified to obtain spherical particles with a morphology close to a complete circle and capable of being used as fracturing proppants, the method does not need to dry the raw material, saves energy consumption, reduces the equipment floor area, has low investment cost, good product quality and high economic value, but the above process directly pulverizes the raw material, and the adhered soil and impurities in the mining and transportation process affect the quality of the quartz sand, the raw material used is treated quartzite, the procurement cost is high, the quality is not easy to control, and a next production line is needed for iron removal, the iron is removed by sand washing, water is wasted in the sand washing process, the sand needs to be dried after sand washing, energy is wasted, and the iron removal process is relatively backward, the adsorbed iron chips need to be cleaned after shutdown, and the working efficiency is not high. Therefore, the technical personnel in the field provide a dry production process of quartz sand for glass to solve the problems in the background technology. SUMMARY

[0004] The application aims to provide a dry production process of quartz sand for glass.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: including the following steps:

[0006] S1, material preparation: selecting quartzite raw ore with a quartz content of more than 99% and a purity of more than 99%, and storing the quartzite raw ore in a material site;

[0007] S2, feeding;

[0008] S3, primary crushing--jaw crushing: using a jaw crusher to crush and treat the quartzite raw ore after mud removal, and the particle size of the quartzite after jaw crushing is less than or equal to 50 mm;

[0009] S4, mud removal by screening;

[0010] S5, secondary crushing--hammer crushing: crushing and treating the quartzite from S4.

[0011] S6, precision screen: screen out 22-80 mesh finished products, greater than 22 mesh is returned to S5 for crushing again, and fine powder less than 80 mesh is saved as a by-product, and the screened finished product goes to S7;

[0012] S7, dry iron removal: a dry magnetic separator with an adjustable inclination is used in the process, the inclination of the magnetic plate is adjusted to be greater than the angle of repose of the material, the material slides off the magnetic plate, and the iron powder is adsorbed on the belt by the magnetic plate and separated from the material.

[0013] S8, quality detection;

[0014] S9, finished product storage.

[0015] In a preferred scheme of the present application, the specific steps of the mud removal screening are as follows:

[0016] S401, primary screening: the mud in the raw material is screened out by a mud-stone separator;

[0017] S402, dry mud removal, mud removal is performed by a mud removal device;

[0018] S403, primary screening: the mud-stone separator is entered again, and the mud in the raw material is screened out by the mud-stone separator.

[0019] In a preferred scheme of the present application, the mud removal device comprises an outer cylinder, a plurality of rotating discs are rotatably connected inside the outer cylinder, the rotating discs are arranged along the height direction of the outer cylinder, a protruding rod is fixed inside the rotating disc, the protruding rod is provided with a plurality of protrusions along the circumferential direction of the rotating disc, a worm wheel is fixed on the side of the rotating disc away from the protruding rod, the worm wheel is externally meshed with a worm, tooth grooves are arranged on the worm in sections, and the number of tooth grooves is consistent with the number of worm wheels.

[0020] In a preferred scheme of the present application, the surface of the protruding rod is provided with a plurality of protrusions, and the protruding rod and the protrusions are made of rubber material and are completely coated with carbon fiber material outside.

[0021] In a preferred scheme of the present application, one end of the worm is rotatably connected to the side surface of the outer cylinder, and a servo motor is connected to the other end, and the lengths of the protruding rods on each rotating disc are inconsistent and gradually lengthen from both ends to the middle position.

[0022] In a preferred scheme of the present application, the material field in S1 is entirely paved with stainless steel plates, the baffle is also made of stainless steel plates, and a vehicle unloading port is left.

[0023] In a preferred scheme of the present application, the magnetic separator in S7 comprises a base, a driving stick, a magnetic plate, a cloth chute, a belt pressing roller, a driven roller, a deironing brush, a magnetic plate inclination adjusting device, the base is rotatably connected with a support, the driving roller is rotatably connected in the support, the end of the support away from the rotation point of the base is connected to the base through the magnetic plate inclination adjusting device, the driven roller is arranged at the end away from the driving roller and rotates in the support, the belt is sleeved between the driving roller and the driven roller, the magnetic plate is arranged below the belt and fixed on the support, the belt pressing roller and the deironing brush are arranged above the belt and at the end of the belt respectively, and the cloth chute is arranged at the side of the belt pressing roller.

[0024] In a preferred scheme of the present application, the magnetic plate inclination adjusting device comprises an adjusting rod fixed on the base by bolts, and the end of the adjusting rod away from the support is rotatably connected to the support.

[0025] The present application has the following beneficial effects:

[0026] 1. The quartz sand dry production process for glass adopts dry iron removal to produce quartz sand, thereby saving the sand washing and drying processes after sand washing, saving water and energy sources, saving materials, treating the raw materials through material preparation and desilting, and the treated materials are cleaner, so that the influence of the adhered soil and impurities in the mining and transportation process on the quality of the quartz sand is avoided, the quartz stone ore is used, the procurement cost is reduced, and the quality is easy to control.

[0027] 2. On the basis of the quartz sand dry production process, the soil on the surface of the raw material quartz stone is fully removed through friction when extruding by using the desilting equipment in the present application, the impurities in the subsequent quartz sand are ensured to be the lowest, the whole process is consistent with the dry process, and the product quality is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a process schematic diagram of the quartz sand dry production process for glass provided by the present application;

[0029] Figure 2 is a magnetic separator structure schematic diagram of the quartz sand dry production process for glass provided by the present application;

[0030] Figure 3 is a desilting equipment structure schematic diagram of the quartz sand dry production process for glass provided by the present application.

[0031] In the figure: 1, outer cylinder; 2, rotating disc; 3, protruding rod; 4, worm gear; 5, worm; 6, protrusion; 7, servo motor; 8, base; 9, driving stick; 10, magnetic plate; 11, cloth chute; 12, belt pressing roller; 13, driven roller; 14, deironing brush; 15, support; 16, adjusting rod. DETAILED DESCRIPTION

[0032] In order to further understand the inventive content, characteristics and effects of the present application, the following examples are given below, and are described in detail as follows with reference to the accompanying drawings.

[0033] As Figure 1 shown, the dry process for producing the glass with quartz sand includes the following steps:

[0034] S1, material preparation: select quartzite raw ore with quartz content of more than 99% purity, store in the material site, the whole material site is paved with stainless steel plate, the baffle is also made of stainless steel plate, and a vehicle unloading port is left, water the material site every five days to ensure the cleanliness of the material site, for example, select quartzite raw ore with quartz content of 95% purity, transport to the material site, unload through the unloading port of the material site, store the material, and water the stacked quartzite raw ore every five days with clean water, the clean water seeps into the material site, carrying the dirt in the material site out, and complete the cleaning of the material site;

[0035] S2, feeding, feeding by a feeder to S3;

[0036] S3, primary crushing--jaw crushing: use a jaw crusher to crush the quartzite raw ore after removing the dirt, the particle size of the quartzite after jaw crushing is ≤50mm;

[0037] S4, screening and removing dirt;

[0038] S5, secondary crushing--hammer crushing: crush the quartzite from S4;

[0039] S6, precision screening: screen out the finished product between 22 mesh and 80 mesh, return the product larger than 22 mesh to S5 for re-crushing, and save the fine powder smaller than 80 mesh as by-product, and the screened finished product goes to S7;

[0040] S7, dry iron removal: this process uses a dry magnetic separator with adjustable inclination, adjust the inclination of the magnetic plate to be greater than the angle of repose of the material, the material slides off the magnetic plate, and the iron powder is attracted to the belt by the magnetic plate and separated from the material;

[0041] The specific steps of screening and removing dirt are as follows:

[0042] S401, primary screening: screen out the dirt in the raw material by a mudstone separator;

[0043] S402, dry desliming, use a desliming device to remove the dirt;

[0044] S403, primary screening: enter the mudstone separator again, and screen out the dirt in the raw material by the mudstone separator.

[0045] In this embodiment, the adopted desliming equipment includes an outer cylinder 1, a plurality of rotating discs 2 are rotatably connected inside the outer cylinder 1, the rotating discs 2 are arranged along the height direction of the outer cylinder 1, a plurality of protruding rods 3 are fixed inside the rotating discs 2, the protruding rods 3 are arranged along the circumferential direction of the rotating discs 2, a worm wheel 4 is fixed on the side of the rotating disc 2 away from the protruding rod 3, the worm wheel 4 is externally meshed with a worm 5, the worm 5 is segmentedly provided with tooth grooves, the number of the tooth grooves is consistent with the number of the worm wheels 4, and each segment of the tooth groove of the worm 5 corresponds to the worm wheel 4 outside the rotating disc 2.

[0046] The surface of the protruding rod 3 is provided with a plurality of protrusions 6, the protruding rod 3 and the protrusion 6 are both made of rubber material, and are completely coated with carbon fiber material outside, the two ends of the worm 5 are rotatably connected to the side of the outer cylinder 1, one end is connected with a servo motor 7, the lengths of the protruding rods 3 on each rotating disc 2 are inconsistent, and gradually lengthen from the two ends to the middle position.

[0047] The worm 5 is driven to rotate by the servo motor 7, when the worm 5 rotates, all the worm wheels 4 are driven to rotate at the same time, with the rotation of the worm wheel 4, the rotating disc 2 fixed therewith rotates, and then, after the quartz stone after the first screening of the soil enters the outer cylinder 1 from above the outer cylinder 1, the protruding rod 3 inside the rotating disc 2 extrudes the quartz stone, and through the extrusion rotation of the protruding rod 3 with different lengths, the protruding rod 3 is equivalent to rubbing the surface of the quartz stone, since the quartz stone is in a dry state, the soil outside the quartz stone is fully separated, the separated soil carries the quartz stone to enter the mud-stone separator again for screening, which effectively ensures the cleanliness of the quartz stone entering S5, thereby improving the purity of the quartz stone in the subsequent process.

[0048] After the quartz stone is screened and the soil is removed in the foregoing manner, the quartz stone is subjected to magnetic separation, in this embodiment, the magnetic separator adopted in S7 includes a base 8, a driving roller 9, a magnetic plate 10, a cloth chute 11, a belt pressing roller 12, a driven roller 13, a de-ironing brush 14, and a magnetic plate 10 inclination adjusting device, the base 8 is rotatably connected with a support 15, the driving roller is rotatably connected inside the support 15, the support 15 is connected to the base 8 through the magnetic plate 10 inclination adjusting device away from the rotating point end of the base 8, the driven roller 13 is arranged away from the driving roller end and rotates inside the support 15, the belt is sleeved between the driving roller and the driven roller, the magnetic plate 10 is arranged below the belt and is fixed on the support 15, the belt pressing roller 12 and the de-ironing brush 14 are arranged above and at the end of the belt respectively, and the cloth chute 11 is arranged on the side of the belt pressing roller 12, wherein the magnetic plate 10 inclination adjusting device includes an adjusting rod 16 which is screwed to the base 8, and the adjusting rod 16 is rotatably connected to the support 15 away from the support 15, when the angle of the magnetic plate 10 is adjusted, the length of the adjusting rod 16 extending into the base 8 is changed for adjustment, after the adjustment of the adjusting rod 16, the connection between the adjusting rod 16 and the support 15 is rotatably moved, and the adjusting rod 16 is locked by screwing after the adjustment.

[0049] The specific process of the above equipment magnetic separation is as follows: the quartz sand is uniformly distributed by the distribution chute 11 to the belt above the magnetic plate 10, the magnetic plate 10 is adjusted according to different particle sizes and the horizontal inclination, and the inclination of the magnetic plate 10 is ensured to be greater than the repose angle of the material, so that the quartz sand slides down along the belt of the magnetic plate 10 from top to bottom, the iron powder in the sand is adsorbed on the belt of the magnetic plate 10 under the action of the strong magnet (13000GS) of the magnetic plate 10, the belt drives the iron powder to move upward and separate from the quartz sand, the iron powder continues to move upward out of the magnetic range of the magnetic plate 10, and is clamped by the pressing roller 12 and the belt to move upward again, and then moves downward with the main belt to the iron removal brush 14, the rotating brush brushes the iron powder off the belt, and thus the iron powder leaves the equipment, and the quartz sand is conveyed to the magnetic rod type iron remover for further iron removal.

[0050] Finally, quality detection is carried out to detect whether the moisture content, iron content and clay content of the product meet the requirements of customers, and the finished product is stored in the warehouse after passing the detection.

[0051] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to which they belong.

[0052] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A dry process for producing quartz sand for glass, characterized by, It comprises the following steps: S1, preparation: select the quartz content of more than 99% quartzite raw ore, storage to the material site; S2, feeding; S3, primary crushing - E broken: using jaw crusher on the mud after the quartzite raw ore crushing treatment, E broken after the quartzite particle size is less than or equal to 50mm; S4, screening mud; S5, secondary crushing - hammer broken: the quartzite crushing treatment from S4; S6, precision screen: screen out the finished product between 22 to 80 mesh, more than 22 mesh back to S5 crushing again, less than 80 mesh fine powder as byproduct, the finished product is screened to S7; S7, dry iron removal: this process uses adjustable angle dry magnetic separator, adjust the angle of the magnetic plate to be greater than the angle of repose of the material, the material from the magnetic plate sliding, iron powder is adsorbed on the belt by the magnetic plate, separated from the material with the belt up; S8, quality detection; S9, finished product storage; The specific steps of the screening mud are as follows: S401, primary screening: remove the soil in the raw material by the mud stone separator; S402, dry desliming, using desliming equipment for desliming; S403, primary screening: enter the mud stone separator again, remove the soil in the raw material by the mud stone separator; The desliming equipment comprises an outer cylinder (1), a plurality of rotating discs (2) are rotatably connected inside the outer cylinder (1), the rotating discs (2) are arranged along the height direction of the outer cylinder (1), a protruding rod (3) is fixed inside each rotating disc (2), a plurality of protruding rods (3) are arranged along the circumferential direction of the rotating disc (2), a worm wheel (4) is fixed to the side of the rotating disc (2) away from the protruding rod (3), a worm (5) is meshed with the outside of the worm wheel (4), the worm (5) is segmented to form tooth grooves, and the number of the tooth grooves is consistent with the number of the worm wheel (4).

2. A dry process for producing quartz sand for glass according to claim 1, characterized in that, The surface of the protruding rod (3) is provided with a plurality of protrusions (6), and the protruding rod (3) and the protrusions (6) are made of rubber material and are completely covered with carbon fiber material.

3. A dry process for producing quartz sand for glass according to claim 1, characterized in that, The two ends of the worm (5) are rotatably connected to the side surface of the outer cylinder (1), one end is connected with a servo motor (7), and the lengths of the protruding rods (3) on each rotating disc (2) are inconsistent and gradually increase from the two ends to the middle position.

4. A dry process for producing quartz sand for glass according to claim 1, characterized in that, The material site in S1 is entirely paved with stainless steel plates, the baffle is also made of stainless steel plates, and a vehicle unloading port is left.

5. A dry process for producing quartz sand for glass according to claim 1, characterized in that, The magnetic separator in S7 comprises a base (8), a driving stick (9), a magnetic plate (10), a material chute (11), a belt pressing roller (12), a driven roller (13), an iron removing brush (14) and a magnetic plate inclination adjusting device, the base (8) is rotatably connected with a support (15), the driving roller is rotatably connected inside the support (15), the support (15) is connected to the base (8) through the magnetic plate inclination adjusting device away from the rotation point end of the base (8), the driven roller (13) is arranged away from the driving roller end and rotates inside the support (15), the belt is sleeved between the driving roller and the driven roller (13), the magnetic plate (10) is arranged below the belt and is fixed on the support (15), the belt pressing roller (12) and the iron removing brush (14) are arranged above and at the end of the belt respectively, and the material chute (11) is located on one side of the belt pressing roller (12).

6. A dry process for producing quartz sand for glass according to claim 5, characterized in that, The magnetic plate inclination adjusting device comprises an adjusting rod (16) fixed on the base (8) by bolts, and the adjusting rod (16) is rotationally connected to the support (15) at the end away from the support (15).

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