A calcining device and purification method for purifying quartz sand
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUDONG LIGHTING
- Filing Date
- 2023-08-04
- Publication Date
- 2026-06-02
Smart Images
Figure CN117006844B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of calcination equipment technology, specifically to a calcination equipment and purification method for purifying quartz sand. Background Technology
[0002] Quartz sand is quartz particles produced by crushing and processing quartz stone. In the process of purifying quartz sand, in order to remove impurities and volatile components, the quartz sand usually needs to be calcined at high temperature and then water-quenched.
[0003] Existing calcination equipment for purifying quartz sand typically involves pouring the quartz sand into a calcination furnace. During heating, it's difficult to ensure rapid heating of the quartz sand far from the furnace wall. Consequently, there's a significant difference in the degree of calcination between the quartz sand near the wall and that far away, resulting in uneven calcination. This leads to insufficient calcination of the quartz sand far from the wall, requiring extended calcination time to ensure complete calcination of the quartz sand inside the furnace. Furthermore, varying impurity content within the quartz sand also contributes to incomplete calcination. Additionally, the more impurities present in the quartz sand, the lower its hardness at high temperatures. Existing equipment cannot perform preliminary crushing to ensure sufficient calcination of the quartz sand with more impurities. Moreover, water quenching after calcination cannot recover heat, resulting in resource waste. Summary of the Invention
[0004] The purpose of this invention is to provide a calcination apparatus and method for purifying quartz sand. It solves the problems of inconsistent calcination between the quartz sand on the cylinder wall and the quartz sand farther from the cylinder wall, and insufficient calcination caused by the inability to crush quartz sand with more impurities during the calcination process.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a calcination device for purifying quartz sand, comprising a partition, a first heating tank installed on the upper surface of the partition, a second heating tank installed inside the first heating tank, a preheating mechanism for preheating the quartz sand installed inside the second heating tank, a stirring mechanism for stirring the quartz sand installed between the first heating tank and the second heating tank, a feed inlet installed on the right side of the first heating tank, a feed pipe installed through the partition on the lower surface of the feed inlet, a cooling box installed on the lower surface of the partition, a first servo motor installed on the lower surface of the cooling box, a control panel installed on the front surface of the cooling box, and a cooling mechanism installed inside the cooling box.
[0006] Preferably, the preheating mechanism includes a conveying assembly and a crushing assembly. The conveying assembly includes a first round rod, the lower end of which passes through a cooling box and is fixedly mounted on the output shaft of a first servo motor. The upper end of the first round rod passes through a partition and is fixedly mounted on a support column. A second spiral blade is fixedly mounted on the outer wall of the first round rod. The outer wall of the second spiral blade abuts against a pipe. The upper end of the pipe is mounted on the partition. A plurality of first spiral blades are fixedly mounted on the outer wall of the support column along its circumference. A plurality of baffles are fixedly mounted on the lower end of the support column along its circumference. The upper end of the support column is concave.
[0007] Preferably, the crushing assembly includes a second servo motor, which is fixedly mounted on the upper surface of the first heating tank. A second round rod is mounted on the lower surface of the second servo motor, penetrating the first heating tank. A third round rod is symmetrically mounted on the outer wall of the second round rod. A cam abuts on the upper surface of the third round rod. A disc is mounted on the upper surface of the cam. A plurality of sliding rods are fixedly mounted on the lower surface of the disc along its circumference. The plurality of sliding rods are slidably connected to the second heating tank. A crushing column is mounted on the lower surface of the sliding rod. The lower surface of the crushing column is convex. A third spiral blade abuts on the inner wall of the crushing column. The third spiral blade is fixedly mounted on the outer wall of the second round rod.
[0008] Preferably, the stirring mechanism includes a support frame and two discharge ports. The support frame is cross-shaped, and several fourth round rods are fixedly installed on the lower end face of the support frame. Support rings are fixedly installed on the lower end faces of the several fourth round rods. The support rings are rotatably connected to the first heating tank. Several stirring plates are rotatably installed on the lower end face of the support rings along their circumference. Gears are fixedly installed on the outer walls of the several stirring plates. The gears mesh with an internal gear ring on the side away from the second heating tank. The internal gear ring is fixedly installed on the inner wall of the first heating tank. The upper end faces of the two discharge ports are installed on the lower end faces of the partition plates.
[0009] Preferably, the cooling mechanism includes a storage bin and two electric telescopic rods. The storage bin is fixedly installed on the bottom wall of the cooling box. A first and second sliding groove are symmetrically formed on the inner wall of the cooling box. A third and fourth sliding groove are symmetrically formed on the outer wall of the storage bin. The two electric telescopic rods are fixedly installed on the lower end face of the cooling box. A filter plate is fixedly installed through the upper end face of the electric telescopic rods. A first sliding plate is fixedly and symmetrically installed on the upper end face of the filter plate. A push plate is slidably installed on the upper end face of the filter plate. A first opening and a second opening are respectively formed on the outer wall of the first sliding plate. A third roller and a fourth roller are rotatably installed through the first and second openings on the side of the push plate facing the storage bin. The third roller is rotatably installed on the inner wall of the third sliding groove, and the fourth roller is rotatably installed on the inner wall of the fourth sliding groove. A first roller and a second roller are rotatably installed through the first and second openings on the side of the push plate away from the storage bin. The first roller is rotatably installed on the inner wall of the first sliding groove, and the second roller is rotatably installed on the inner wall of the second sliding groove.
[0010] Preferably, the first slide, the second slide, the third slide, and the fourth slide are of the same size.
[0011] Preferably, a second support leg is symmetrically installed on the lower end face of the partition, and a plurality of first support legs are installed on the lower end face of the cooling box.
[0012] Preferably, the purification method for quartz sand includes the following steps:
[0013] Step 1: Crush the quartz sand into small particles and then perform strong magnetic separation. After strong magnetic separation, wash to remove surface adhering substances and then dry it.
[0014] Step 2: After drying, the quartz sand enters the storage silo through the feed pipe from the feed inlet. Then, it is preheated, fed, and crushed by the preheating mechanism. After completion, it enters the space between the first heating tank and the second heating tank, where the stirring mechanism stirs it. After reaching the required temperature, it is discharged from the outlet and enters the cooling box for water quenching before being discharged.
[0015] Step 3: The water-quenched quartz sand is subjected to strong magnetic separation again, followed by acid leaching, and then rinsed with ultrapure water.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0017] This invention employs a preheating mechanism. A first servo motor rotates, driving a second spiral blade via a first rod to transport quartz sand into a second heating tank. Simultaneously, the rotation of the first rod also drives a support column, which in turn rotates a lower baffle and the first spiral blade on the outer wall. The baffle brings the quartz sand closer to the inner wall of the second heating tank, while the first spiral blade scoops up the sand, causing it to adhere to the inner wall for preheating. This increases the temperature of the quartz sand, effectively shortening the calcination time. As the quartz sand is continuously extracted, its concave upper surface causes it to move towards the center of the support column. The second servo motor, via the second rod, drives a third rod to rotate. The third round rod presses against the cam. When the third round rod is at the cam's protruding part, the cam drives the slide rod to slide upward on the inner wall of the second heating tank through the disc. The slide rod drives the crushing column to move upward away from the support column. When the third round rod rotates to a certain angle and no longer contacts the cam's protruding part, the crushing column will hit the support column downward due to its own weight. Since the lower end face of the crushing column is convex, it will fit against the support column and crush the preheated quartz sand (quartz sand with a high impurity content will have reduced hardness at the high temperature of preheating, and will be crushed after impact, and then calcined). This causes some of the quartz sand to be crushed again, allowing impurities to leak out and allowing it to be fully calcined to improve purity. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention;
[0019] Figure 2 for Figure 1 Bottom view;
[0020] Figure 3 This is a cross-sectional view of the present invention;
[0021] Figure 4 This is a schematic diagram of the preheating mechanism of the present invention without the pipes;
[0022] Figure 5 This is a cross-sectional view of the preheating mechanism of the present invention;
[0023] Figure 6 for Figure 4 Another perspective illustration;
[0024] Figure 7 This is a schematic diagram of the stirring mechanism of the present invention;
[0025] Figure 8 for Figure 7 Another perspective illustration;
[0026] Figure 9 This is a schematic diagram of the cooling mechanism of the present invention;
[0027] Figure 10 for Figure 9 Diagram with cooling box removed.
[0028] In the diagram: 1. First heating tank; 2. Baffle plate; 3. First support leg; 4. Feed inlet; 5. Second support leg; 6. Control panel; 7. First servo motor; 8. Feed pipe; 9. Second heating tank; 10. Cooling box; 100. Preheating mechanism; 200. Stirring mechanism; 300. Cooling mechanism; 101. Second servo motor; 102. Disc; 103. Crushing column; 104. First spiral blade; 105. Baffle plate; 106. Second spiral blade; 107. First round rod; 108. Second round rod; 109. Third spiral blade; 110. Slide rod; 111. Cam; 112. 113. Third round rod; 114. Support column; 201. Pipe; 202. Support frame; 203. Fourth round rod; 204. Support ring; 205. Gear; 206. Internal gear ring; 207. Mixing plate; 208. Discharge port; 301. First chute; 302. Second chute; 303. Slide plate; 304. Push plate; 305. Storage bin; 306. Third chute; 307. Fourth chute; 308. Filter plate; 309. First opening; 310. Second opening; 311. Electric telescopic rod; 312. First roller; 313. Second roller; 314. Third roller; 315. Fourth roller. Detailed Implementation
[0029] Please see Figures 1 to 10 The present invention provides a technical solution: a calcination device for purifying quartz sand, comprising a partition 2, a first heating tank 1 installed on the upper end face of the partition 2, a second heating tank 9 installed inside the first heating tank 1, a preheating mechanism 100 for preheating quartz sand installed inside the second heating tank 9, a stirring mechanism 200 for stirring quartz sand installed between the first heating tank 1 and the second heating tank 9, a feed inlet 4 installed on the right side of the first heating tank 1, a feed pipe 8 installed through the partition 2 on the lower end face of the feed inlet 4, a cooling box 10 installed on the lower end face of the partition 2, a first servo motor 7 installed on the lower end face of the cooling box 10, a control panel 6 installed on the front end face of the cooling box 10, and a cooling mechanism 300 installed inside the cooling box 10;
[0030] Control panel 6 allows you to set relevant parameters;
[0031] Furthermore, such as Figure 1 As shown, a second support leg 5 is symmetrically installed on the lower end face of the partition 2, and a plurality of first support legs 3 are installed on the lower end face of the cooling box 10; the second support leg 5 and the first support leg 3 support the entire device.
[0032] Furthermore, such as Figure 4 , Figure 5 , Figure 6As shown, the preheating mechanism 100 includes a conveying assembly and a crushing assembly. The conveying assembly includes a first round rod 107. The lower end face of the first round rod 107 passes through the cooling box 10 and is fixedly mounted on the output shaft of the first servo motor 7. The upper end face of the first round rod 107 passes through the partition 2 and is fixedly mounted on a support column 113. A second spiral blade 106 is fixedly mounted on the outer wall of the first round rod 107. The outer wall of the second spiral blade 106 abuts against a pipe 114. The upper end face of the pipe 114 is mounted on the partition 2. A plurality of first spiral blades 104 are fixedly mounted on the outer wall of the support column 113 along its circumference. A plurality of baffles 105 are fixedly mounted on the lower end face of the support column 113 along its circumference. The upper end face of the support column 113 is concave. The crushing assembly includes a second servo motor 101. A servo motor 101 is fixedly installed on the upper end face of the first heating tank 1. A second round rod 108 is installed on the lower end face of the second servo motor 101 through the first heating tank 1. A third round rod 112 is symmetrically installed on the outer wall of the second round rod 108. A cam 111 is abutted on the upper end face of the third round rod 112. A disk 102 is installed on the upper end face of the cam 111. A plurality of slide rods 110 are fixedly installed on the lower end face of the disk 102 along its circumference. The plurality of slide rods 110 are slidably connected to the second heating tank 9. A crushing column 103 is installed on the lower end face of the slide rod 110. The lower end face of the crushing column 103 is convex. A third spiral blade 109 is abutted on the inner wall of the crushing column 103. The third spiral blade 109 is fixedly installed on the outer wall of the second round rod 108. The upper end face of the crushing column 103 is convex.
[0033] The first heating tank 1 and the second heating tank 9 are heated. When the temperature sensor in the stirring plate 206 detects that the temperature has been reached, the processed quartz sand is put into the feed inlet 4 and then flows into the storage bin 305 through the feed pipe 8. Then, the control panel 6 is operated to make the first servo motor 7 rotate. The first servo motor 7 drives the second spiral blade 106 to transport the quartz sand into the second heating tank 9 through the first round rod 107. The rotation of the first round rod 107 will also drive the support column 113 to rotate. The support column 113 drives the lower baffle 105 and the first spiral blade 104 on the outer wall to rotate. The baffle 105 brings the quartz sand close to the inner wall of the second heating tank 9. The first spiral blade 104 will scoop up the quartz sand and make it stick to the inner wall of the second heating tank 9 for preheating. When more and more quartz sand is extracted, the quartz sand at the bottom will squeeze the quartz sand on the first spiral blade 104 to move upward. Since the upper end face of the support column 113 is concave, the quartz sand will move closer to the center of the support column 113.
[0034] Simultaneously, the second servo motor 101 rotates, and the second servo motor 101 drives the third round rod 112 to rotate via the second round rod 108. The third round rod 112 presses against the cam 111. When the third round rod 112 is at the protruding part of the cam 111, the cam 111 drives the slide rod 110 to slide upward on the inner wall of the second heating tank 9 via the disc 102. The slide rod 110 drives the crushing column 103 to move upward away from the support column 113. When the third round rod 112 rotates to a certain angle and no longer contacts the protruding part of the cam 111, the crushing column 103 will strike the support column 113 downward due to its own weight. The lower end face of 03 is convex, so it will fit against the support column 113 and crush the preheated quartz sand between them (quartz sand with a high impurity content will have reduced hardness at the high temperature of preheating, and will be crushed after impact, and then calcined), causing some of the quartz sand to be crushed again, allowing impurities to leak out. At the same time, the second round rod 108 drives the third spiral blade 109 to extract the preheated and crushed quartz sand on the support column 113 again. Since the upper end face of the crushing column 103 is convex, the quartz sand will fall quickly between the first heating tank 1 and the second heating tank 9. After a period of extraction, the first servo motor 7 stops rotating.
[0035] Furthermore, such as Figure 7 , Figure 8 As shown, the stirring mechanism 200 includes a support frame 201 and two discharge ports 207. The support frame 201 is cross-shaped. Several fourth round rods 202 are fixedly installed on the lower end face of the support frame 201. Support rings 203 are fixedly installed on the lower end faces of the several fourth round rods 202. The support rings 203 are rotatably connected to the first heating tank 1. Several stirring plates 206 are rotatably installed on the lower end face of the support rings 203 along its circumference. Gears 204 are fixedly installed on the outer wall of the several stirring plates 206. The gears 204 mesh with an internal gear ring 205 on the side away from the second heating tank 9. The internal gear ring 205 is fixedly installed on the inner wall of the first heating tank 1. The upper end faces of the two discharge ports 207 are installed on the lower end face of the partition plate 2 and are connected to the first heating tank 1 and the second heating tank 9. Solenoid valves are installed inside the two discharge ports 207. The support ring 203 is sleeved on the outside of the disc 102.
[0036] To monitor temperature, such as Figure 3 As shown, temperature sensors are installed inside several of the stirring plates 206;
[0037] When the second round rod 108 rotates, it also drives the support frame 201 to rotate. The support frame 201 drives the support ring 203 to rotate through the fourth round rod 202. The support ring 203 drives the stirring plate 206 to rotate. The stirring plate 206 drives the gear 204 to rotate. Since the gear 204 meshes with the internal gear ring 205, the gear 204 drives the stirring plate 206 to stir and mix the falling quartz sand, so that the temperature of the quartz sand is uniform. At the same time, the temperature sensor in the stirring plate 206 monitors the temperature. When the temperature reaches the water quenching temperature, it feeds back to the control panel 6 to open the solenoid valve in the discharge port 207, so that the quartz sand is discharged.
[0038] Furthermore, such as Figure 9 , Figure 10 As shown, the cooling mechanism 300 includes a storage bin 305 and two electric telescopic rods 311. The storage bin 305 is fixedly installed on the bottom wall of the cooling box 10. A first sliding groove 301 and a second sliding groove 302 are symmetrically opened on the inner wall of the cooling box 10. A third sliding groove 306 and a fourth sliding groove 307 are symmetrically opened on the outer wall of the storage bin 305. The two electric telescopic rods 311 are fixedly installed on the lower end face of the cooling box 10. A filter plate 308 is fixedly installed through the upper end face of the electric telescopic rods 311 and penetrates the cooling box 10. A first sliding plate 303 is fixedly and symmetrically installed on the upper end face of the filter plate 308. A push plate 304 is slidably installed on the upper end face of the filter plate 308. A first opening 309 and a second opening 310 are respectively opened on the outer wall of the first sliding plate 303. A third roller 314 and a fourth roller 315 are rotatably mounted on the push plate 304 facing the storage bin 305 through the first opening 309 and the second opening 310. The third roller 314 is rotatably mounted on the inner wall of the third slide 306, and the fourth roller 315 is rotatably mounted on the inner wall of the fourth slide 307. A first roller 312 and a second roller 313 are rotatably mounted on the push plate 304 away from the storage bin 305 through the first opening 309 and the second opening 310. The first roller 312 is rotatably mounted on the inner wall of the first slide 301, and the second roller 313 is rotatably mounted on the inner wall of the second slide 302. The first slide 301, the second slide 302, the third slide 306, and the fourth slide 307 are the same size and are inclined.
[0039] Quartz sand is discharged through outlet 207 into cooling box 10. The temperature inside cooling box 10 rises, exchanging heat with the quartz sand in storage bin 305. After water quenching, the electric telescopic rod 311 extends upward via control panel 6, pushing filter plate 308 upward. Filter plate 308 pushes the sliding plates 303 on both sides upward, which in turn drive push plate 304 upward. Push plate 304 drives first roller 312, second roller 313, third roller 314, and fourth roller 315 to slide in first chute 301, second chute 302, third chute 306, and fourth chute 307 respectively. The slide 301, second slide 302, third slide 306 and fourth slide 307 are inclined. When the filter plate 308 rises, the push plate 304 pushes the quartz sand on the filter plate 308 to be discharged outward. After discharge, the electric telescopic rod 311 retracts, the filter plate 308 descends, and the sliding plates 303 on both sides descend. The sliding plates 303 on both sides drive the push plate 304 to descend. The push plate 304 drives the first roller 312, the second roller 313, the third roller 314 and the fourth roller 315 to slide in the first slide 301, the second slide 302, the third slide 306 and the fourth slide 307 respectively, and then return to the initial position.
[0040] In this embodiment, the purification method for quartz sand includes the following steps:
[0041] Step 1: Crush the quartz sand into particles of the same size using a crusher, then use a magnetic separator to remove strongly magnetic substances from the quartz sand. After strong magnetic separation, wash to remove surface adhering substances (such as dirt), and then dry it in a dryer.
[0042] Step 2: When the dried quartz sand needs to be calcined, the relevant parameters are manually set via control panel 6. The first heating tank 1 and the second heating tank 9 are heated. When the temperature sensor inside the stirring plate 206 detects that the temperature has been reached, the treated quartz sand is put into the feed inlet 4, and then flows into the storage silo 305 through the feed pipe 8. Then, the control panel 6 is operated to rotate the first servo motor 7. The first servo motor 7 drives the second spiral blade 106 via the first round rod 107 to transport the quartz sand into the second heating tank 9. The rotation of 107 will also drive the support column 113 to rotate. The support column 113 will drive the lower baffle 105 and the first spiral blade 104 on the outer wall to rotate. The baffle 105 will bring the quartz sand closer to the inner wall of the second heating tank 9. The first spiral blade 104 will scoop up the quartz sand and make it stick to the inner wall of the second heating tank 9 for preheating. As more and more quartz sand is extracted, the quartz sand at the lower end will squeeze the quartz sand on the first spiral blade 104 to move upward. Since the upper end face of the support column 113 is concave, the quartz sand will move closer to the center of the support column 113.
[0043] Simultaneously, the second servo motor 101 rotates, and the second servo motor 101 drives the third round rod 112 to rotate via the second round rod 108. The third round rod 112 presses against the cam 111. When the third round rod 112 is at the protruding part of the cam 111, the cam 111 drives the slide rod 110 to slide upward on the inner wall of the second heating tank 9 via the disc 102. The slide rod 110 drives the crushing column 103 to move upward away from the support column 113. When the third round rod 112 rotates to a certain angle and no longer contacts the protruding part of the cam 111, the crushing column 103 will strike the support column 113 downward due to its own weight. The lower end face of component 03 is convex, so it fits against the support column 113 and crushes the preheated quartz sand between them (quartz sand with a high impurity content will have reduced hardness at the high temperature of preheating, and will be crushed upon impact before calcination). This further crushes some of the quartz sand, allowing impurities to escape and making the calcination more complete. At the same time, the second round rod 108 drives the third spiral blade 109 to extract the preheated and crushed quartz sand from the support column 113 again. The quartz sand falls through the upper end face of the crushing column 103 between the first heating tank 1 and the second heating tank 9. After a certain extraction time, the first servo motor 7 stops rotating.
[0044] The rotation of the second round rod 108 also drives the support frame 201 to rotate. The support frame 201 drives the support ring 203 to rotate via the fourth round rod 202. The support ring 203 drives the stirring plate 206 to rotate. The stirring plate 206 drives the gear 204 to rotate. Since the gear 204 meshes with the internal gear ring 205, the gear 204 drives the stirring plate 206 to stir and mix the falling quartz sand. The temperature sensor inside the stirring plate 206 monitors the temperature. After reaching the set temperature, it feeds back to the control panel 6 to open the solenoid valve in the discharge port 207. The stirring plate 206 pushes the quartz sand in the first heating tank 1 and the second heating tank 9 directly into the cooling box 10 through the discharge port 207. The sand will not stick to the inner wall. At that time, the temperature in the cooling box 10 will rise, and heat will be exchanged with the quartz sand in the storage bin 305. The temperature of the cooling box 10 will decrease, and the temperature of the quartz sand will increase. Then, an equilibrium will be reached. It is not necessary to continuously inject cold water into the cooling box 10. After water quenching, the electric telescopic rod 311 will extend upward through the control panel 6. The filter plate 308 rises, pushing the sliding plates 303 on both sides to rise. The sliding plates 303 on both sides drive the push plate 304 to rise. The push plate 304 drives the first roller 312, the second roller 313, the third roller 314, and the fourth roller 315 to slide in the first slide groove 301, the second slide groove 302, the third slide groove 306, and the fourth slide groove 307 respectively. Because the first slide groove 301, the second slide groove 302, the third slide groove 306, and the fourth slide groove 307 are inclined, the filter plate 308 rises. At the same time, the push plate 304 pushes the quartz sand on the filter plate 308 to be discharged outward. After discharge, the electric telescopic rod 311 retracts, the filter plate 308 descends, and the sliding plates 303 on both sides descend. The sliding plates 303 on both sides drive the push plate 304 to descend. The push plate 304 drives the first roller 312, the second roller 313, the third roller 314 and the fourth roller 315 to slide in the first slide groove 301, the second slide groove 302, the third slide groove 306 and the fourth slide groove 307 respectively, and then return to the initial position.
[0045] Step 3: The water-quenched quartz sand is subjected to strong magnetic separation again to remove the strong magnetic material after crushing. Then it is subjected to acid leaching to further remove iron and aluminum metal impurities. Finally, it is rinsed with ultrapure water until the cleaning waste liquid is neutral. After drying in a dryer, the purified quartz sand is obtained.
Claims
1. A calcination apparatus for purifying quartz sand, comprising a partition (2), characterized in that: The upper surface of the partition (2) is equipped with a first heating tank (1), the first heating tank (1) is equipped with a second heating tank (9), the second heating tank (9) is equipped with a preheating mechanism (100) for preheating quartz sand, the first heating tank (1) and the second heating tank (9) are equipped with a stirring mechanism (200) for stirring quartz sand, the right side of the first heating tank (1) is equipped with a feed inlet (4), the lower surface of the feed inlet (4) is connected to the partition (2) and a feed pipe (8) is installed, the lower surface of the partition (2) is equipped with a cooling box (10), the lower surface of the cooling box (10) is equipped with a first servo motor (7), the front surface of the cooling box (10) is equipped with a control panel (6), and the cooling box (10) is equipped with a cooling mechanism (300). The preheating mechanism (100) includes a conveying component and a crushing component. The conveying component includes a first round rod (107). The lower end face of the first round rod (107) passes through the cooling box (10) and is fixedly installed on the output shaft of the first servo motor (7). The upper end face of the first round rod (107) passes through the partition (2) and is fixedly installed with a support column (113). The outer wall of the first round rod (107) is fixedly installed with a second spiral blade (106). The outer wall of the second spiral blade (106) abuts against a pipe (114). The upper end face of the pipe (114) is installed on the partition (2). The outer wall of the support column (113) is fixedly installed with several first spiral blades (104) along its circumference. The lower end face of the support column (113) is fixedly installed with several baffles (105) along its circumference. The upper end face of the support column (113) is concave. The crushing assembly includes a second servo motor (101), which is fixedly installed on the upper surface of the first heating tank (1). A second round rod (108) is installed on the lower surface of the second servo motor (101) through the first heating tank (1). A third round rod (112) is symmetrically installed on the outer wall of the second round rod (108). A cam (111) abuts on the upper surface of the third round rod (112). A disc (102) is installed on the upper surface of the cam (111). A plurality of slide rods (110) are fixedly installed on the lower surface of the disc (102) along its circumference. The plurality of slide rods (110) are slidably connected to the second heating tank (9). A crushing column (103) is installed on the lower surface of the slide rod (110). The lower surface of the crushing column (103) is convex. A third spiral blade (109) abuts on the inner wall of the crushing column (103). The third spiral blade (109) is fixedly installed on the outer wall of the second round rod (108).
2. The calcination apparatus for purifying quartz sand according to claim 1, characterized in that: The stirring mechanism (200) includes a support frame (201) and two discharge ports (207). The support frame (201) is cross-shaped. Several fourth round rods (202) are fixedly installed on the lower end face of the support frame (201). Support rings (203) are fixedly installed on the lower end faces of the several fourth round rods (202). The support rings (203) are rotatably connected to the first heating tank (1). Several stirring plates (206) are installed on the lower end face of the support rings (203) along their circumference. Gears (204) are fixedly installed on the outer walls of the several stirring plates (206). The gears (204) mesh with an internal gear ring (205) on the side away from the second heating tank (9). The internal gear ring (205) is fixedly installed on the inner wall of the first heating tank (1). The upper end faces of the two discharge ports (207) are installed on the lower end face of the partition plate (2).
3. The calcination apparatus for purifying quartz sand according to claim 1, characterized in that: The cooling mechanism (300) includes a storage bin (305) and two electric telescopic rods (311). The storage bin (305) is fixedly installed on the bottom wall of the cooling box (10). A first sliding groove (301) and a second sliding groove (302) are symmetrically opened on the inner wall of the cooling box (10). A third sliding groove (306) and a fourth sliding groove (307) are symmetrically opened on the outer wall of the storage bin (305). The two electric telescopic rods (311) are fixedly installed on the lower end face of the cooling box (10). A filter plate (308) is fixedly installed through the cooling box (10) on the upper end face of the electric telescopic rods (311). A first sliding plate (303) is symmetrically fixedly installed on the upper end face of the filter plate (308). A push plate (304) is slidably installed on the upper end face of the filter plate (308). The outer wall of the first sliding plate (303) is respectively opened The device has a first opening (309) and a second opening (310). The push plate (304) facing the storage bin (305) has a first roller (312) and a second roller (313) rotatably mounted through the first opening (309) and the second opening (310). The first roller (312) is rotatably mounted on the inner wall of the third chute (306), and the second roller (313) is rotatably mounted on the inner wall of the fourth chute (307). The push plate (304) away from the storage bin (305) has a first roller (312) and a second roller (313) rotatably mounted through the first opening (309) and the second opening (310). The first roller (312) is rotatably mounted on the inner wall of the first chute (301), and the second roller (313) is rotatably mounted on the inner wall of the second chute (302).
4. The calcination apparatus for purifying quartz sand according to claim 3, characterized in that: The first slide (301), the second slide (302), the third slide (306) and the fourth slide (307) are the same size.
5. The calcination apparatus for purifying quartz sand according to claim 1, characterized in that: The lower end face of the partition (2) is symmetrically equipped with a second support leg (5), and the lower end face of the cooling box (10) is equipped with a plurality of first support legs (3).
6. A method for purifying quartz sand, comprising a calcination apparatus for purifying quartz sand according to claim 1, characterized in that, Includes the following steps: Step 1: Crush the quartz sand into small particles and then perform strong magnetic separation. After strong magnetic separation, wash to remove surface adhering substances and then dry it. Step 2: After drying, the quartz sand enters the storage silo (305) through the feed pipe (8) from the feed inlet (4). Then, it is preheated, fed and crushed by the preheating mechanism (100). After completion, it enters the space between the first heating tank (1) and the second heating tank (9). The stirring mechanism (200) stirs it. After reaching the temperature, it is discharged from the outlet (207) and enters the cooling box (10) for water quenching, and then discharged. Step 3: The water-quenched quartz sand is subjected to strong magnetic separation again, followed by acid leaching, and then rinsed with ultrapure water.