A device and method for producing high-purity quartz sand based on high-temperature chlorination

Abstract

This invention relates to an apparatus and method for producing high-purity quartz sand based on a high-temperature chlorination process, applicable to the field of quartz sand processing. During the chlorination and roasting purification of quartz sand, microwave heating is employed to ensure uniform heating. Simultaneously, a small-diameter spiral feed tube provides a dense and uniform feeding effect for the quartz sand per unit volume. The rotation of the drive mechanism and inner rod ensures thorough and uniform mixing of the chlorinating agent with the quartz sand within the quartz cylinder. A high-temperature thermal imager monitors the roasting state within the quartz cylinder and provides timely feedback and adjustment. A hydraulic lifting rod is used to adjust the movable ball, indirectly adjusting the vertical oscillation of the spiral feed tube. This achieves three-dimensional mixing and effectively cleans and unblocks any leaks on the surface of the spiral feed tube, ensuring stable delivery of the chlorinating agent.

Description

Technical Field

[0001] This invention relates to an apparatus and method for producing high-purity quartz sand using a high-temperature chlorination process, and particularly to an apparatus and method for producing high-purity quartz sand using a high-temperature chlorination process applied in the field of quartz sand processing. Background Technology

[0002] Purifying quartz sand to obtain high-purity quartz is an effective way to alleviate the shortage of natural crystal resources and meet the demand for high-quality quartz glass materials in the optics, semiconductor, and microelectronics industries. The purification technology of natural quartz sand directly determines the material properties of quartz glass made from natural quartz ore. The traditional quartz sand purification process is: water washing—acid leaching—calcination—water crushing—secondary acid leaching. In the traditional purification process, chlorination calcination is mainly used to remove impurity elements within the quartz sand crystal lattice.

[0003] Chinese invention patent CN202311209195.6 discloses a highly efficient method for producing ultra-high purity quartz sand. The method involves loading 3N-grade quartz sand into a tubular roasting furnace, sealing both ends of the furnace, and adjusting the negative pressure within the furnace cavity. A chlorinating agent is then injected, and chlorination roasting is performed via microwave heating. After chlorination roasting, the sand is cooled to obtain quartz sand of grade 4N5 or higher. This method is based on the physicochemical properties of impurities in the quartz sand and their thermodynamic and kinetic reactions with the chlorinating agent. It controls the pressure of the reaction system and uses external heating to enhance the generation and propagation of microcracks within the quartz sand, promoting the chlorination reaction and volatilization removal of impurities. This achieves efficient, rapid, and deep impurity removal from the quartz sand. The method has advantages such as a simple process flow, low roasting temperature, low chlorinating agent dosage, and high impurity removal efficiency. It can obtain ultra-high purity quartz sand of grade 4N5 and above for photovoltaic and electronic applications, and is easily promoted and applied in industrial production.

[0004] In the above-mentioned method for purifying quartz sand, microwave heating is used to complete the chlorination roasting process. However, if the quartz sand raw material and the chlorinating agent cannot be fully and evenly mixed during the roasting process, the chlorination roasting will be incomplete, affecting the chlorination purification effect of the quartz sand. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to achieve more complete chlorination roasting treatment during high-temperature chlorination purification of quartz sand, so as to improve the chlorination purification effect of quartz sand.

[0006] To address the aforementioned problems, this invention provides an apparatus and method for producing high-purity quartz sand using a high-temperature chlorination process. The apparatus includes a heat-insulated working cylinder with an exhaust pipe and a feed inlet at the top. A quartz cylinder is installed inside the heat-insulated working cylinder. A microwave heating ring is installed between the quartz cylinder and the heat-insulated working cylinder. A drive mechanism is arranged on the outside of the heat-insulated working cylinder. A stirring motor is installed at the top of the heat-insulated working cylinder. The output end of the stirring motor is connected to a rotating rod whose tail extends into the quartz cylinder. A hydraulic telescopic rod is vertically mounted on the surface of the rotating rod. The movable end of the hydraulic telescopic rod is connected to a vertically arranged inner rod. A spiral material distribution pipe is connected to the surface of the inner rod via a bridge rod, and the surface of the spiral material distribution pipe has several perforations.

[0007] An air pump is installed on one side of the bottom of the insulation working cylinder. The output end of the air pump is connected to a retractable air pipe located at the center of the bottom of the insulation working cylinder. The tail end of the retractable air pipe extends through the interior of the quartz cylinder and is connected to the tail end of the spiral material distribution pipe. A discharge pipe located on one side of the retractable air pipe is installed through the bottom of the quartz cylinder, and the tail end of the discharge pipe extends to the bottom of the insulation working cylinder.

[0008] The drive mechanism includes an external gear ring that is fixedly sleeved on the outer surface of the insulation working cylinder. A drive gear is meshed on the surface of the external gear ring. A drive motor is installed on one side of the insulation working cylinder, and the output end of the drive motor is connected to the bottom of the drive gear.

[0009] In the above-mentioned device for producing high-purity quartz sand based on high-temperature chlorination, the dynamic mixing of chlorinating agent and quartz sand can be fully and uniformly achieved during the chlorination roasting purification process of quartz sand.

[0010] As a further improvement of this application, a support column located outside the discharge pipe is arranged around the bottom of the heat-insulating working cylinder, and a ball is rotatably connected to the top of the support column. The surface of the ball is in active contact with the bottom of the heat-insulating working cylinder. A support frame is installed on the surface of the support column, and the tail end of the support frame is fixedly connected to the top of the stirring motor.

[0011] As a further improvement to this application, the diameter of the vertical projection of the spiral feed tube is less than half the radius of the quartz cylinder.

[0012] As a further improvement of this application, a feedback adjustment system is also included. The feedback adjustment system includes a control processor, which is connected to a monitoring module, an adjustment module, and an alarm module. The monitoring module includes a gas detector installed in a retractable air tube and a high-temperature thermal imager installed on the top wall of the quartz cylinder. The high-temperature thermal imager is applicable to temperatures above 1000°C. The adjustment module includes a pressure sensor installed in the gap between the microwave heating ring and the inner wall of the heat preservation working cylinder, and the pressure sensor is connected to the air pump signal.

[0013] As a further improvement of this application, the spiral material distribution pipe has a spiral rod with the same spiral design inside, and the diameter of the spiral rod is smaller than the diameter of the leakage hole on the surface of the spiral material distribution pipe.

[0014] As another improvement of this application, the inner wall of the inner rod is equipped with a hydraulic lifting rod that is signal-connected to the adjustment module via an extension platform. The output end of the hydraulic lifting rod is connected to a striped plate. A movable ball is fitted and connected to the surface of the inner rod, and the surface of the movable ball is fixedly connected to the surface of the bridge rod. The movable ball has a striped arc surface that matches the striped plate arranged on the surface of the bridge rod away from the surface of the bridge rod.

[0015] As a further improvement to this application, the height of the striped arc surface is less than the height of the movable ball itself, and the cross-sectional width of the striped surface is less than half the radius of the movable ball itself, and the portion of the movable ball protruding from the inner rod surface is half the volume of the movable ball itself.

[0016] As a further improvement to this application, a method for using an apparatus for producing high-purity quartz sand based on a high-temperature chlorination process includes the following steps:

[0017] S1. The quartz sand to be purified is fed into the heat-insulating working cylinder through the feed inlet;

[0018] S2. Connect the input end of the air pump to the air source, and the air source is HCl gas with a purity greater than 99.5%;

[0019] S3. Start the microwave heating ring and gradually heat it to 1000℃, and start the air pump so that HCl gas can enter the spiral dispensing pipe through the expandable air tube.

[0020] S4. Turn on the stirring motor and drive mechanism to drive the heat-insulating working cylinder and spiral dispersing pipe to rotate;

[0021] S5. Start the hydraulic telescopic rod, adjust the effective material distribution radius of the spiral material distribution pipe inside the quartz cylinder, and carry out a gradual material distribution operation from the center outward inside the quartz cylinder.

[0022] S6. After high-temperature roasting for 2-4 hours, stop heating, discharge the quartz sand from the quartz cylinder through the discharge pipe, and then perform water quenching treatment.

[0023] As a further improvement to this application, S5 also includes the following steps:

[0024] S51. During the adjustment of the spiral feed pipe, a high-temperature thermal imager is used, with an applicable temperature of over 1000℃, to perform thermal imaging processing on the quartz sand inside the quartz cylinder. The thermal imaging data is then transmitted to the control processor to determine the physical state of the quartz sand material inside the quartz cylinder. If the molten material exceeds the set threshold, the control adjustment module activates the hydraulic lifting rod to knock and clean the leaks on the surface of the spiral feed pipe.

[0025] In summary, microwave heating is used to ensure uniform heating during the chlorination roasting and purification of quartz sand. A small-diameter spiral feed tube provides a dense and uniform feeding effect for the quartz sand per unit volume. The rotation of the drive mechanism and inner rod ensures thorough and uniform mixing of the chlorinating agent with the quartz sand inside the quartz cylinder. A high-temperature thermal imager monitors the roasting state within the quartz cylinder, allowing for timely feedback and adjustment. A hydraulic lifting rod adjusts the movable ball, indirectly regulating the vertical oscillation of the spiral feed tube. This achieves three-dimensional mixing and effectively cleans and unblocks any leaks on the surface of the spiral feed tube, ensuring stable delivery of the chlorinating agent. Attached Figure Description

[0026] Figure 1 These are schematic diagrams showing the overall appearance of the first and second embodiments of this application;

[0027] Figure 2 These are bottom views of the insulation cylinder according to the first and second embodiments of this application;

[0028] Figure 3 This is a schematic diagram showing the installation of the heat-insulating working cylinder, quartz cylinder, and microwave heating ring according to the first and second embodiments of this application;

[0029] Figure 4 This is a schematic diagram of the interior of the heat-insulating working cylinder according to the first and second embodiments of this application;

[0030] Figure 5 This is a schematic diagram of the installation of the air pump, spiral feed pipe, inner rod, and bridge rod according to the first and second embodiments of this application.

[0031] Figure 6 This is a partial view of the spiral feed pipe and spiral rod according to the first and second embodiments of this application;

[0032] Figure 7 This is a schematic diagram of the internal structure of the inner rod according to the second embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the movable ball and striped plate according to the second embodiment of this application;

[0034] Figure 9This is a schematic diagram illustrating the state of the spiral feed pipe oscillating due to the motion of the movable ball in the second embodiment of this application.

[0035] Figure 10 This is a schematic diagram of the method flow for the first and second embodiments of this application.

[0036] Explanation of the labels in the diagram:

[0037] 1. Insulated working cylinder; 101. External gear ring; 102. Drive gear; 103. Drive motor; 104. Microwave heating ring; 2. Support column; 21. Support frame; 3. Exhaust pipe; 4. Stirring motor; 5. Air pump; 6. Discharge pipe; 7. Quartz cylinder; 8. Hydraulic telescopic rod; 9. Inner rod; 91. Hydraulic lifting rod; 92. Striped plate; 93. Moving ball; 10. Spiral dispersing pipe; 11. Bridge rod; 12. Spiral rod. Detailed Implementation

[0038] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] First implementation method:

[0040] Figure 1-4 An apparatus for producing high-purity quartz sand based on a high-temperature chlorination process is shown, comprising an insulated working cylinder 1 with an exhaust pipe 3 and a feed inlet at the top, a quartz cylinder 7 installed inside the insulated working cylinder 1, a microwave heating ring 104 installed between the quartz cylinder 7 and the insulated working cylinder 1, a drive mechanism arranged on the outside of the insulated working cylinder 1, a stirring motor 4 installed at the top of the insulated working cylinder 1, a rotating rod whose tail end extends into the interior of the quartz cylinder 7 connected to the output end of the stirring motor 4, a hydraulic telescopic rod 8 vertically installed on the surface of the rotating rod, a vertically arranged inner rod 9 connected to the movable end of the hydraulic telescopic rod 8, a spiral material distribution pipe 10 connected to the surface of the inner rod 9 through a bridge rod 11, and a number of leakage holes provided on the surface of the spiral material distribution pipe 10.

[0041] Figure 4-5 An air pump 5 is installed on one side of the bottom of the heat-insulating working cylinder 1. The output end of the air pump 5 is connected to a retractable air pipe located at the center of the bottom of the heat-insulating working cylinder 1. The tail end of the retractable air pipe extends through to the inside of the quartz cylinder 7 and is connected to the tail end of the spiral dispersing pipe 10. A discharge pipe 6 located on one side of the retractable air pipe is installed through the bottom of the quartz cylinder 7, and the tail end of the discharge pipe 6 extends to the bottom of the heat-insulating working cylinder 1.

[0042] The drive mechanism includes an external gear ring 101 fixedly sleeved on the outer surface of the heat preservation cylinder 1, a drive gear 102 meshing with the surface of the external gear ring 101, a drive motor 103 installed on one side of the heat preservation cylinder 1, and the output end of the drive motor 103 connected to the bottom of the drive gear 102.

[0043] The diameter of the vertical projection of the spiral feed tube 10 is less than half the radius of the quartz cylinder 7.

[0044] Specifically, when carrying out the corresponding high-temperature chlorination purification process, the use of high-purity HCl gas and microwave heating can achieve a relatively uniform heating effect.

[0045] After HCl gas is delivered into the spiral material distribution pipe 10 through the air pump 5, the drive mechanism, namely the drive motor 103, is started to drive the drive gear 102 to rotate, which in turn drives the outer gear ring 101 fixedly connected to the outer wall of the heat preservation cylinder 1 to rotate, which in turn drives the internal quartz cylinder 7 and the internal quartz sand material to rotate. With the help of the spiral design of the spiral material distribution pipe 10, preliminary uniform feeding management can be achieved.

[0046] During this process, the position of the spiral material distribution pipe 10 inside the quartz cylinder 7 is adjusted by the hydraulic telescopic rod 8, thereby enabling the spiral material distribution pipe 10 to perform comprehensive and uniform feeding management inside the quartz cylinder 7. Compared with the traditional spiral feeding mechanism that is fixed at the center position inside the working cylinder and rotates, the spiral material distribution pipe 10 in this application is smaller in size, which can provide dense and uniform feeding treatment to the nearby quartz sand. By continuously adjusting the rotation, it can achieve comprehensive, dense and uniform feeding operation of quartz sand material inside the quartz cylinder 7. Combined with the mixing treatment of quartz sand inside the quartz cylinder 7 driven by the drive mechanism, it can comprehensively improve the full mixing and contact of quartz sand and chlorinating agent during chlorination roasting in this application.

[0047] The bottom of the heat-insulating working cylinder 1 is surrounded by a support column 2 located outside the discharge pipe 6, and a ball is rotatably connected to the top of the support column 2. The surface of the ball is in contact with the bottom of the heat-insulating working cylinder 1. A support frame 21 is installed on the surface of the support column 2, and the tail end of the support frame 21 is fixedly connected to the top of the stirring motor 4.

[0048] Specifically, the support column 2 and the ball bearing provide support for the insulation working cylinder 1 without affecting its rotation. They also provide stable support and fixation for the support frame 21, and provide support for the installation of the mixing motor 4.

[0049] It also includes a feedback adjustment system, which includes a control processor. The control processor is connected to a monitoring module, an adjustment module, and an alarm module. The monitoring module includes a gas detector installed in a retractable air tube and a high-temperature thermal imager installed on the top wall of the quartz cylinder 7. The high-temperature thermal imager is applicable to temperatures above 1000℃. The adjustment module includes a pressure sensor installed in the gap between the microwave heating ring 104 and the inner wall of the heat preservation cylinder 1. The pressure sensor is connected to the air pump 5.

[0050] Specifically, the gas detector is used to check whether the purity of HCl gas meets the requirements;

[0051] The pressure sensor is designed to detect whether the quartz cylinder 7 is leaking. If the quartz cylinder 7 is leaking, the gas inside the quartz cylinder 7 will leak and transfer to the gap between the quartz cylinder 7 and the heat preservation cylinder 1, which will increase the gas pressure. It is necessary to adjust the delivery volume of the air pump 5 in time to ensure a sufficient supply of chlorinating agent.

[0052] Figure 6 The spiral feed tube 10 is shown to have a spiral rod 12, which is also spirally designed, inside. The diameter of the spiral rod 12 is smaller than the diameter of the hole on the surface of the spiral feed tube 10.

[0053] Specifically, when the spiral material distribution pipe 10 rotates with the inner rod 9, the internal spiral rod 12 will also knock on the inner wall of the spiral material distribution pipe 10, thereby clearing the leakage holes and preventing the quartz sand from clogging it.

[0054] Figure 10 The following describes a method for using an apparatus for producing high-purity quartz sand using a high-temperature chlorination process, comprising the following steps:

[0055] S1. The quartz sand to be purified is fed into the heat-insulating working cylinder 1 through the feed inlet;

[0056] S2. Connect the input end of the air pump 5 to the air source, and the air source is HCl gas with a purity greater than 99.5%;

[0057] S3. Start the microwave heating ring 104 and gradually heat it to 1000°C. Start the air pump 5 so that HCl gas can enter the spiral dispersing pipe 10 through the expandable air tube.

[0058] S4. Turn on the stirring motor 4 and the drive mechanism to drive the heat-insulating working cylinder 1 and the spiral dispersing pipe 10 to rotate.

[0059] S5. Start the hydraulic telescopic rod 8, adjust the effective material distribution radius of the spiral material distribution pipe 10 in the quartz cylinder 7, and carry out a gradual material distribution operation from the center outward in the quartz cylinder 7.

[0060] S6. After high-temperature roasting for 2-4 hours, stop heating and discharge the quartz sand in the quartz cylinder 7 through the discharge pipe 6 and perform water quenching treatment.

[0061] Second implementation method:

[0062] Figure 7-9The inner wall of the inner rod 9 is shown to be equipped with a hydraulic lifting rod 91 that is signal-connected to the adjustment module via an extension platform. The output end of the hydraulic lifting rod 91 is connected to a striped plate 92. A movable ball 93 is fitted and connected to the surface of the inner rod 9, and the surface of the movable ball 93 is fixedly connected to the surface of the bridge rod 11. The surface of the movable ball 93 facing away from the bridge rod 11 is arranged with a striped arc surface that matches the striped plate 92.

[0063] The height of the striped arc surface is less than the height of the movable ball 93 itself, and the cross-sectional width of the striped surface is less than half the radius of the movable ball 93 itself. The part of the movable ball 93 that protrudes from the surface of the inner rod 9 is half the volume of the movable ball 93 itself.

[0064] Unlike the first embodiment, this embodiment uses the combination of hydraulic lifting rod 91, striped plate 92 and movable ball 93 to improve the state of the spiral material distribution pipe 10 when it rotates, thereby improving the uniformity of mixing between the spiral material distribution pipe 10 and the quartz sand when providing chlorinating agent.

[0065] Specifically, when the high-temperature thermal imager detects that the proportion of molten material inside the quartz cylinder 7 has increased beyond the set threshold (i.e., adhesion will cause blockage of the leak), the hydraulic lifting rod 91 needs to be activated to reciprocate, causing the striped plate 92 to scrape the striped arc surface of the movable ball 93 up and down, so that the movable ball 93 swings to a certain extent in the vertical space, thereby causing the spiral distributing pipe 10 to tilt and swing slightly. This can both drive the spiral rod 12 to swing up and down inside the spiral distributing pipe 10, enhancing the cleaning and unblocking effect of the leak, and also adjust the contact angle between the leak and the quartz sand, realizing three-dimensional feeding and mixing treatment, and further enhancing the uniform mixing of quartz sand and chlorinating agent.

[0066] S5 also includes the following steps:

[0067] S51. During the adjustment of the spiral material distribution pipe 10, a high-temperature thermal imager is used, with an applicable temperature of over 1000℃, to perform thermal imaging processing on the quartz sand inside the quartz cylinder 7. The thermal imaging data is then transmitted to the control processor to determine the physical state of the quartz sand material inside the quartz cylinder 7. If the molten material exceeds the set threshold, the control adjustment module activates the hydraulic lifting rod 91 to knock and clean the leaks on the surface of the spiral material distribution pipe 10.

[0068] During chlorination roasting, HCl gas reacts with certain alkaline substances on the surface of quartz sand to generate KCl, CaCl2, and NaCl. The melting points of KCl, CaCl2, and NaCl are all around 800℃ (KCl has a melting point of 770℃ and a boiling point of 1400℃, CaCl2 has a melting point of 782℃ and a boiling point of 1600℃, and NaCl has a melting point of 801℃ and a boiling point of 1465℃). Therefore, as the roasting operation proceeds, the generated chlorides exist in a molten state. If the amount of chlorides is too large, it will affect the smooth flow of gas through the leaks on the surface of the spiral feed pipe 10. Therefore, a high-temperature thermal imager is used to monitor the state of the quartz sand in the chlorination roasting process inside the quartz cylinder 7, so that appropriate measures can be taken in time to clean the surface of the spiral feed pipe 10 and ensure the smooth delivery of HCl gas.

[0069] In summary, this application employs microwave heating to ensure uniform heating during the chlorination roasting and purification of quartz sand. Simultaneously, the small-diameter spiral feed tube 10 provides a dense and uniform feeding effect for the quartz sand per unit volume. The rotation of the drive mechanism and inner rod 9 ensures that the spiral feed tube 10 fully and uniformly mixes with the quartz sand in the quartz cylinder 7 while conveying the chlorinating agent. A high-temperature thermal imager monitors the roasting state within the quartz cylinder 7 and provides timely feedback and adjustment. The hydraulic lifting rod 91 adjusts the movable ball 93, indirectly adjusting the vertical oscillation of the spiral feed tube 10. This achieves three-dimensional mixing and effectively cleans and unblocks any leaks on the surface of the spiral feed tube 10, ensuring stable delivery of the chlorinating agent.

[0070] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. An apparatus for producing high-purity quartz sand based on a high-temperature chlorination process, characterized in that: The device includes an insulated working cylinder (1) with an exhaust pipe (3) and a feed inlet at the top. A quartz cylinder (7) is installed inside the insulated working cylinder (1). A microwave heating ring (104) is installed between the quartz cylinder (7) and the insulated working cylinder (1). A drive mechanism is arranged on the outside of the insulated working cylinder (1). A stirring motor (4) is installed at the top of the insulated working cylinder (1). The output end of the stirring motor (4) is connected to a rotating rod whose tail end extends into the inside of the quartz cylinder (7). A hydraulic telescopic rod (8) is vertically installed on the surface of the rotating rod. A vertically arranged inner rod (9) is connected to the movable end of the hydraulic telescopic rod (8). A spiral material distribution pipe (10) is connected to the surface of the inner rod (9) through a bridge rod (11). The surface of the spiral material distribution pipe (10) is provided with several leakage holes. An air pump (5) is installed on one side of the bottom of the heat-insulating working cylinder (1). The output end of the air pump (5) is connected to a retractable air pipe located at the center of the bottom of the heat-insulating working cylinder (1). The tail end of the retractable air pipe extends through to the inside of the quartz cylinder (7) and is connected to the tail end of the spiral material distribution pipe (10). A discharge pipe (6) located on one side of the retractable air pipe is installed through the bottom of the quartz cylinder (7). The tail end of the discharge pipe (6) extends to the bottom of the heat-insulating working cylinder (1). The driving mechanism includes an external gear ring (101) fixedly sleeved on the outer surface of the heat preservation working cylinder (1), and a driving gear (102) meshing with the surface of the external gear ring (101). A driving motor (103) is installed on one side of the heat preservation working cylinder (1), and the output end of the driving motor (103) is connected to the bottom of the driving gear (102).

2. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 1, characterized in that: The insulation working cylinder (1) is surrounded by a support column (2) located outside the discharge pipe (6), and a ball is rotatably connected to the top of the support column (2). The surface of the ball is in contact with the bottom of the insulation working cylinder (1). A support frame (21) is installed on the surface of the support column (2), and the tail end of the support frame (21) is fixedly connected to the top of the stirring motor (4).

3. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 1, characterized in that: The diameter of the vertical projection of the spiral feed tube (10) is less than half the radius of the quartz cylinder (7).

4. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 1, characterized in that: It also includes a feedback adjustment system, which includes a control processor. The control processor is connected to a monitoring module, an adjustment module and an alarm module. The monitoring module includes a gas detector installed in a retractable air tube and a high-temperature thermal imager installed on the top wall of the quartz cylinder (7). The applicable temperature of the high-temperature thermal imager is above 1000℃. The adjustment module includes a pressure sensor installed in the gap between the microwave heating ring (104) and the inner wall of the heat preservation working cylinder (1). The pressure sensor is connected to the air pump (5) via a signal.

5. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 1, characterized in that: The spiral material distribution pipe (10) has a spiral rod (12) with the same spiral design inside, and the diameter of the spiral rod (12) is smaller than the diameter of the leakage hole on the surface of the spiral material distribution pipe (10).

6. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 4, characterized in that: The inner wall of the inner rod (9) is equipped with a hydraulic lifting rod (91) that is connected to the adjustment module via an extension platform. The output end of the hydraulic lifting rod (91) is connected to a striped plate (92). A movable ball (93) is fitted and connected to the surface of the inner rod (9), and the surface of the movable ball (93) is fixedly connected to the surface of the bridge rod (11). The movable ball (93) has a striped arc surface that matches the striped plate (92) on the surface away from the bridge rod (11).

7. The apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 6, characterized in that: The height of the striped arc surface is less than the height of the movable ball (93), and the cross-sectional width of the striped surface is less than half the radius of the movable ball (93). The portion of the movable ball (93) protruding from the surface of the inner rod (9) is half the volume of the movable ball (93).

8. A method of using the apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to any one of claims 1-7, characterized in that: The work includes the following steps: S1. The quartz sand to be purified is fed into the heat-insulating working cylinder (1) through the feed port; S2. Connect the input end of the air pump (5) to the air source, and the air source is HCl gas with a purity greater than 99.5%; S3. Start the microwave heating ring (104) and gradually heat it to 1000°C. Start the air pump (5) so that the HCl gas can enter the spiral dispersing pipe (10) through the expandable air pipe. S4. Turn on the stirring motor (4) and drive mechanism to drive the heat preservation working cylinder (1) and the spiral dispersing pipe (10) to rotate; S5. Start the hydraulic telescopic rod (8), adjust the effective material distribution radius of the spiral material distribution pipe (10) in the quartz cylinder (7), and carry out the gradual material distribution operation from the center outward in the quartz cylinder (7). S6. After high-temperature roasting for 2-4 hours, stop heating and discharge the quartz sand in the quartz cylinder (7) through the discharge pipe (6) and perform water quenching treatment.

9. The method of using the apparatus for producing high-purity quartz sand based on the high-temperature chlorination process according to claim 8, characterized in that: S5 further includes the following steps: S51. During the adjustment of the spiral material distribution pipe (10), a high-temperature thermal imager is used, and the applicable temperature of the high-temperature thermal imager is above 1000℃, to perform thermal imaging processing on the quartz sand in the quartz cylinder (7), and transmit the thermal imaging data to the control processor to determine the physical state of the quartz sand material in the quartz cylinder (7). If the molten material exceeds the set threshold, the control adjustment module starts the hydraulic lifting rod (91) to knock and clean the leaks on the surface of the spiral material distribution pipe (10).

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