Purification equipment and purification method of ultra-high purity quartz sand

Abstract

The application discloses a kind of purification equipment of ultra-high purity quartz sand and its purification method, including immersion washing tank, the rotating drum is equipped in the immersion washing tank, the rotating drum is opened with door, motor is fixed on the immersion washing tank side plate on rotating drum side, the output shaft of motor is fixedly connected with the side of rotating drum and the side of immersion washing tank, the sealing upper plate is slidably connected on the immersion washing tank;By immersion washing tank, it can realize soaking cleaning and spraying effect by rotating drum, and double purification is carried out on quartz sand;By immersion washing tank, mixing box and sedimentation tank, acid liquid circulation is realized, resource is saved, and purification cost is reduced;By heating pipe on sealing upper plate and the PH tester that is equipped in the inside of immersion washing tank, mixing box and sedimentation tank, the temperature and PH value of acid can be effectively controlled, so that the concentration and PH value of acid always meet the requirement of quartz sand purification, temperature and concentration are strictly controlled, and high-purity purification of quartz sand is realized.

Description

Technical Field

[0001] This invention relates to the field of quartz sand technology, specifically to a purification device and method for ultra-high purity quartz sand. Background Technology

[0002] Quartz sand is a common non-metallic mineral raw material in nature, with a wide range of applications. It is often used in glass products, building materials, semiconductor technology, optical fiber communication cables, and thin film materials. For the fields of semiconductor technology and optical fiber communication cables, the purity requirements for quartz sand are very high, so it is necessary to purify quartz sand.

[0003] Referring to the publication number "CN116272766A" entitled "A Quartz Sand Purification Equipment", it proposes "a high-efficiency, multi-stage purification equipment for quartz sand. Through microwave heating, it can achieve high-temperature treatment of quartz sand in a short time, rapidly decompose organic matter, impurities, minerals and other impurities, thereby improving the purity of quartz sand. In addition, microwave heating has the advantages of fast heating speed, low energy consumption and simple operation, which can effectively improve the processing efficiency and purification effect of quartz sand".

[0004] The technical solution to the above-mentioned technical problem is to treat the quartz sand at high temperature by microwave heating, and to achieve the purpose of quartz sand purification by temperature control.

[0005] However, in the existing technology, the purification of quartz sand is affected by many factors, such as acid concentration, temperature and immersion time. Although simply controlling the temperature can improve the purity of quartz sand, it still cannot meet the requirements for high-purity quartz sand. Therefore, a purification device and method for ultra-high purity quartz sand are proposed. Summary of the Invention

[0006] The technical solution adopted by this invention to solve the technical problem is: a purification device and method for ultra-high purity quartz sand, including an immersion tank, a rotating drum inside the immersion tank, a door on the rotating drum, a motor fixedly mounted on one side of the rotating drum on the side plate of the immersion tank, the output shaft of the motor passing through one side of the immersion tank and fixedly connected to one side of the rotating drum, a slidably connected sealing plate on the immersion tank, a mixing chamber on the sealing plate, multiple liquid storage tanks evenly distributed on the mixing chamber, a sedimentation tank on one side of the immersion tank, a door on one side of the sedimentation tank, a control panel fixedly mounted on one side of the sedimentation tank, a first water pump above the sedimentation tank, the input pipe of the water pump passing through the upper plate of the sedimentation tank, the output pipe of the water pump passing through the side plate of the immersion tank, a three-way pipe at the bottom of the immersion tank, an electromagnetic valve at one port of the three-way pipe, a second water pump at the other port of the three-way pipe, and the output pipe of the second water pump passing through the bottom plate of the sedimentation tank;

[0007] The immersion tank, mixing tank and sedimentation tank are all equipped with pH testers, and the pH testers are all electrically connected to the control panel;

[0008] Heating tubes are fixedly connected to the sides of the sealing upper plate, and a temperature sensor is fixedly installed on the inner surface of the sealing upper plate. The heating tubes and the temperature sensor are electrically connected to the control panel.

[0009] As a preferred embodiment of the present invention, a baffle is rotatably connected to one side of the sealing upper plate, a sliding groove is provided on the side plate of the sealing upper plate near the sedimentation tank, and an exhaust pipe is provided on the surface of the sealing upper plate corresponding to the baffle.

[0010] As a preferred embodiment of the present invention, the bottom of the liquid storage tank is provided with a liquid delivery solenoid valve, and the upper end of the liquid storage tank is provided with a connection port.

[0011] As a preferred embodiment of the present invention, the sedimentation tank is divided into two areas by a partition, namely a liquid sedimentation area and a control area. The control area is equipped with a control box, which contains a circuit board, a power supply and a CPU data processing center. The surface of the sedimentation tank that contacts the sealing plate is equipped with a fixing block, which is rod-shaped and slidably connected inside the chute.

[0012] As a preferred embodiment of the present invention, the bottom surface of the mixing tank is provided with a mixing liquid electromagnetic valve.

[0013] As a preferred embodiment of the present invention, two-thirds of the height of the rotating drum is located inside the immersion tank, the rotating drum has holes, and the immersion tank is provided with a liquid level viewing column.

[0014] As a preferred technical solution of the present invention, a purification method for a purification device for ultra-high purity quartz sand includes the following specific steps: T1. Quartz sand that has been washed, graded and deslimed, scrubbed and magnetically separated is placed inside a rotating drum. First, the iron and aluminum elements inside the quartz sand are removed. Suitable acids, such as sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid, are selected to remove the iron and aluminum elements inside the quartz sand. After selecting the suitable acid, the acid is first poured into a storage tank, and pure water is poured into the storage tank for later use.

[0015] T2. Once the acid is ready, slide the upper sealing plate to keep the immersion tank relatively sealed. Start the infusion solenoid valve through the control panel to inject the acid into the mixing tank. Use the pH meter inside the mixing tank to test the acidity and alkalinity and adjust the acid concentration inside the mixing tank. After reaching the required acidity concentration, start the mixing liquid solenoid valve and close the infusion solenoid valve through the control panel to allow the acid to enter the immersion tank and perform preliminary acid washing on the quartz sand inside the rotating drum. At this time, the motor also starts to rotate, driving the rotating drum to rotate and causing the quartz sand inside to turn over.

[0016] T3. Observe the liquid level inside the immersion tank through the liquid level sight glass. After the liquid level reaches a certain height of the rotating drum, close the mixing liquid solenoid valve through the control panel. At this time, start the heating tube to heat the acid inside, and monitor the internal temperature at all times through the temperature sensor. After immersion for a period of time, start the second water pump to input the used acid into the sedimentation tank. At this time, the mixing liquid solenoid valve on the mixing tank is activated to simultaneously discharge and input acid. The acid inside the sedimentation tank will settle for a period of time. The first water pump will first extract the upper layer of acid into the mixing tank for reuse. At the same time, the concentration of the reused acid will be detected in the mixing tank and sedimentation tank to ensure that the acid concentration meets the requirements at all times.

[0017] T4. After the quartz sand is purified, the acid inside the immersion tank and sedimentation tank is collected through the solenoid valve and the box door for subsequent processing. Then, titanium and chromium elements are removed from the quartz sand inside the rotating drum. The removal steps are repeated with T1, T2 and T3. The acids used are different this time, namely concentrated sulfuric acid and hydrofluoric acid. In this step, the generated gas is collected using the exhaust pipe.

[0018] The present invention has the following advantages: 1. The immersion tank can achieve both soaking and cleaning and spraying effect through the rotating drum, thus achieving dual purification of quartz sand;

[0019] 2. Acid solution circulation is achieved through immersion tanks, mixing tanks, and sedimentation tanks, saving resources and reducing purification costs;

[0020] 3. By installing a pH meter in the heating pipe on the sealed upper plate and inside the immersion tank, mixing tank and sedimentation tank, the temperature and pH value of the acid can be effectively controlled, so that the concentration and pH value of the acid always meet the requirements of quartz sand purification. Strict control of temperature and concentration can achieve high-purity purification of quartz sand. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the combined structure of the sealing upper plate and the mixing box according to a preferred embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the bottom structure of the mixing box according to a preferred embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the sealing upper plate structure according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of a liquid storage tank according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the bottom structure of the immersion tank according to a preferred embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of a sedimentation tank according to a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Immersion tank; 2. Rotating drum; 3. Door; 4. Motor; 5. Sealing upper plate; 51. Heating tube; 52. Exhaust pipe; 53. Temperature sensor; 54. Slide chute; 6. Mixing tank; 7. Storage tank; 71. Connection port; 72. Infusion solenoid valve; 8. Sedimentation tank; 81. Control box; 9. Box door; 10. Control panel; 11. Water pump; 12. T-junction pipe; 13. Solenoid valve; 14. Second water pump; 15. Baffle plate; 16. Mixing liquid solenoid valve. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Example 1

[0031] Please refer to the following: Figure 1-4According to the present invention, a purification device and method for ultra-high purity quartz sand includes an immersion tank 1, a rotating drum 2 inside the immersion tank 1, a door 3 on the rotating drum 2, a motor 4 fixedly mounted on one side of the rotating drum 2 on the side plate of the immersion tank 1, the output shaft of the motor 4 passing through one side of the immersion tank 1 and fixedly connected to one side of the rotating drum 2, the side of the rotating drum 2 away from the output shaft of the motor 4 being connected to the rotating shaft of the immersion tank 1 via a bracket, a sealing upper plate 5 slidably connected on the immersion tank 1, a mixing chamber 6 mounted on the sealing upper plate 5, the sealing upper plate 5 and the mixing chamber 6 being an integral structure, multiple liquid storage tanks 7 evenly distributed on the mixing chamber 6, a sedimentation tank 8 on one side of the immersion tank 1, the top cover of the sedimentation tank 8 being openable for easy access to the interior. During maintenance, a door 9 is provided on one side of the sedimentation tank 8. Inside the sedimentation tank 8 is a box to hold liquid. The box has a drain port corresponding to the door 9. A control panel 10 is fixedly provided on one side of the sedimentation tank 8. A first water pump 11 is provided above the sedimentation tank 8. The input pipe of the water pump 11 passes through the upper plate of the sedimentation tank 8. The output pipe of the water pump 11 passes through the side plate of the immersion tank 6. The output pipe of the water pump 11 is a corrugated pipe to prevent the pipe from being pulled off when the sealing upper plate 5 slides. A three-way pipe 12 is provided at the bottom of the immersion tank 1. A solenoid valve 13 is provided at one port of the three-way pipe 12. A second water pump 14 is provided at the other port of the three-way pipe 12. The output pipe of the second water pump 14 passes through the bottom plate of the sedimentation tank 8.

[0032] The immersion tank 1, mixing tank 6 and sedimentation tank 8 are all equipped with pH testers. The pH testers are electrically connected to the control panel 10. The pH testers are wireless pH sensor probes. The wireless pH sensor probes are used to detect the acid inside the immersion tank 1, mixing tank 6 and sedimentation tank 8 at all times to ensure that the acid concentration meets the requirements for purifying quartz sand. The acid can be neutralized by adding water or reducing agent in the mixing tank 6 to ensure that the pH value of the acid is stable during the circulation process.

[0033] Heating tubes 51 are fixedly connected to the sides of the sealing upper plate 5. Temperature sensors 53 are fixedly installed on the inner surface of the sealing upper plate 5. The heating tubes 51 and temperature sensors 53 are electrically connected to the control panel 10. The heating tubes 51 are used to heat the inside of the immersion tank 1, thereby raising the temperature of the acid. The temperature during the purification process is monitored at all times, which effectively improves the purity of the quartz sand.

[0034] The bottom of the mixing tank 6 is equipped with a mixing liquid solenoid valve 16. The mixing liquid solenoid valve 16 will only be opened after the pH test inside the mixing tank 6 is qualified, so as to ensure that the pH value of the initial acid is consistent with the pH value of the acid after circulation, thus achieving an efficient recycling effect.

[0035] Two-thirds of the height of the rotating drum 2 is located inside the immersion tank 1. The rotating drum 2 has holes, and the immersion tank 1 is equipped with a liquid level viewing column. When acid is injected into the immersion tank 1 through the mixing box 6, it will be dispersed into the rotating drum 2 through the holes, which will spray the quartz sand inside. After the acid accumulates to a certain height in the immersion tank 1, it can be observed through the liquid level viewing column. Then, the second water pump 14 is started to drain the liquid into the sedimentation tank 8 to achieve circulation.

[0036] First, acid and pure water are poured into storage tank 7 for later use. The sliding sealing plate 5 is used to maintain a relatively sealed state in the immersion tank 1. The infusion solenoid valve 72 is activated via control panel 10 to inject acid into the mixing chamber 6. The pH level inside the mixing chamber 6 is detected by a pH meter, and the acid concentration is adjusted accordingly. Once the desired acid concentration is reached, the mixing liquid solenoid valve 16 is activated and the infusion solenoid valve 72 is closed via control panel 10, allowing the acid to enter the immersion tank 1 and clean the quartz sand inside the rotating drum 2. During the initial pickling process, motor 4 also starts to rotate, driving the rotating drum 2 to rotate and agitate the internal quartz sand. After the liquid level in the immersion tank 1 is sufficient, the mixing liquid solenoid valve 16 is closed via control panel 10. At this time, heating tube 51 is activated to heat the internal acid, and the internal temperature is monitored at all times by temperature sensor 53. After immersion for a period of time, the second water pump 14 is activated to input the used acid into the sedimentation tank 8. At this time, the mixing liquid solenoid valve 16 on the mixing tank 6 is activated to simultaneously discharge and input acid, realizing a cyclic operation.

[0037] Example 2

[0038] Please refer to the attached document. Figure 4 and Figure 5 A cover plate 15 is rotatably connected to one side of the sealing upper plate 5. The cover plate 15 is used to achieve a relative seal on the immersion tank 1 to prevent liquid from spraying out during the purification process. A sliding groove 5 is provided on the side plate of the sealing upper plate 5 near the sedimentation tank 8. The sealing upper plate 5 needs to slide to leak into the immersion tank 1. During the sliding process, the stability of the sealing upper plate 5 needs to be ensured. Therefore, the corresponding fixed blocks on the sliding groove 5 and the sedimentation tank 8 are used to achieve relative fixation. The fixed blocks are also used to limit the sliding distance of the sealing upper plate 5 to prevent the sealing upper plate 5 from detaching from the immersion tank 1. An exhaust pipe 52 is provided on the surface of the sealing upper plate 5 corresponding to the cover plate 15. Gas is generated during the purification process. The exhaust pipe 52 is used to collect the gas and then process it. Alternatively, an external gas processing device can be directly connected.

[0039] The bottom of the liquid storage tank 7 is equipped with a liquid infusion solenoid valve 72, and the upper end of the liquid storage tank 7 is equipped with a connection port 71. The connection port 71 is provided so that when filling the liquid, it can be directly connected to the connection port 71, and the liquid can be input by pressure. The human body does not need to directly contact it, which is safe and efficient.

[0040] Example 3

[0041] Please refer to the attached document. Figure 7 The sedimentation tank 8 is divided into two areas by a partition: a liquid sedimentation area and a control area. The control area is equipped with a control box 81, which contains a circuit board, a power supply, and a CPU data processing center. The CPU data processing center processes the pH value transmitted from the pH tester in the washing tank 1, the mixing tank 6, and the sedimentation tank 8, as well as the temperature data transmitted from the temperature sensor 53. It monitors the temperature and pH value at all times to ensure the requirements for high-purity quartz sand purification. The surface of the sedimentation tank 8 that contacts the sealing upper plate 5 is equipped with a fixing block. The fixing block is rod-shaped and slidably connected inside the slide 54.

[0042] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0043] Other parts of this invention that are not detailed herein are all prior art and will not be described further here.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A purification device for ultra-high purity quartz sand, comprising an immersion tank (1), characterized in that, The immersion tank (1) is equipped with a rotating drum (2) inside. A door (3) is opened on the rotating drum (2). A motor (4) is fixedly installed on one side of the rotating drum (2) on the side plate of the immersion tank (1). The output shaft of the motor (4) passes through one side of the immersion tank (1) and is fixedly connected to one side of the rotating drum (2). A sealing upper plate (5) is slidably connected on the immersion tank (1). A mixing tank (6) is provided on the sealing upper plate (5). Multiple liquid storage tanks (7) are evenly distributed on the mixing tank (6). A sedimentation tank (8) is provided on one side of the immersion tank (1). A door is provided on one side of the sedimentation tank (8). (9) A control panel (10) is fixedly provided on one side of the sedimentation tank (8). A first water pump (11) is provided above the sedimentation tank (8). The input pipe of the water pump (11) passes through the upper plate of the sedimentation tank (8). The output pipe of the water pump (11) passes through the side plate of the immersion tank (1). A three-way pipe (12) is provided at the bottom of the immersion tank (1). A solenoid valve (13) is provided at one of the openings of the three-way pipe (12). A second water pump (14) is provided at the other opening of the three-way pipe (12). The output pipe of the second water pump (14) passes through the bottom plate of the sedimentation tank (8). The immersion tank (1), the mixing tank (6) and the sedimentation tank (8) are all equipped with pH testers, and the pH testers are all electrically connected to the control panel (10). Heating tubes (51) are fixedly connected to the sides of the sealing upper plate (5), and temperature sensors (53) are fixedly provided on the inner surface of the sealing upper plate (5). The heating tubes (51) and temperature sensors (53) are electrically connected to the control panel (10). The sedimentation tank (8) is divided into two areas by a partition, namely a liquid sedimentation area and a control area. The control area is equipped with a control box (81), which contains a circuit board, a power supply and a CPU data processing center. The surface of the sedimentation tank (8) that contacts the sealing plate (5) is equipped with a fixing block, which is rod-shaped and slidably connected inside the slide groove (54).

2. The purification equipment for ultra-high purity quartz sand as described in claim 1, characterized in that, The sealing upper plate (5) is rotatably connected to a shield (15) on one side. The sealing upper plate (5) is provided with a sliding groove (54) on the side plate near the sedimentation tank (8). The sealing upper plate (5) is provided with an exhaust pipe (52) on the surface corresponding to the shield (15).

3. The purification equipment for ultra-high purity quartz sand as described in claim 1, characterized in that, The liquid storage tank (7) is equipped with a liquid delivery solenoid valve (72) at the bottom and a connection port (71) at the top.

4. The purification equipment for ultra-high purity quartz sand as described in claim 1, characterized in that, The bottom surface of the mixing tank (6) is equipped with a mixing liquid electromagnetic valve (16).

5. The purification equipment for ultra-high purity quartz sand as described in claim 1, characterized in that, Two-thirds of the height of the rotating drum (2) is located inside the immersion tank (1). The rotating drum (2) has holes, and the immersion tank (1) has a liquid level viewing column.

6. A purification device and method for ultra-high purity quartz sand, employing the ultra-high purity quartz sand purification device described in claim 1, wherein the specific steps are as follows: T1. Place the quartz sand that has been washed, graded and deslimed, scrubbed and magnetically separated into the inside of the rotating drum (2). First, remove the iron and aluminum elements inside the quartz sand. Select a suitable acid, such as sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid, to remove the iron and aluminum elements inside the quartz sand. After selecting a suitable acid, pour the acid into the storage tank (7) and pure water into the storage tank (7) for later use. T2. When the acid is ready, slide the sealing plate (5) to keep the immersion tank (1) relatively sealed. Start the infusion solenoid valve (72) through the control panel (10) to inject the acid into the mixing tank (6). Detect the acid-base level inside the mixing tank (6) through the pH tester inside the mixing tank (6) and adjust the acid concentration inside the mixing tank (6). After reaching the required acid concentration, start the mixing liquid solenoid valve (16) and close the infusion solenoid valve (72) through the control panel (10) to let the acid enter the immersion tank (1) and perform preliminary acid washing on the quartz sand inside the rotating drum (2). At this time, the motor (4) also starts to rotate, driving the rotating drum (2) to rotate and causing the quartz sand inside to turn over. T3. Observe the liquid level inside the immersion tank (1) through the liquid level viewing column. After the liquid level is submerged to a certain height in the rotating drum (2), close the mixing liquid solenoid valve (16) through the control panel (10). At this time, start the heating tube (51) to heat the acid inside. And keep the internal temperature under control through the temperature sensor (53). After immersion for a period of time, start the second water pump (14) to input the used acid into the sedimentation tank (8). At this time, start the mixing liquid solenoid valve (16) on the mixing box (6) to discharge and input the acid at the same time. The acid inside the sedimentation tank (8) will settle for a period of time. The first water pump (11) will first extract the upper layer of acid into the mixing box (6) to reuse the acid. At the same time, the acid concentration of the reused acid will be detected in the mixing box (6) and the sedimentation tank (8) to ensure that the acid concentration meets the requirements at all times. T4. After the quartz sand is purified, the acid inside the washing tank (1) and the sedimentation tank (8) is collected through the electromagnetic valve (13) and the box door (9) for subsequent processing. Then, titanium and chromium elements are removed from the quartz sand inside the rotating drum (2). The removal steps are repeated in T1, T2 and T3. The acids used are different at this time, namely concentrated sulfuric acid and hydrofluoric acid. In this step, the exhaust pipe (52) is used to collect the generated gas.

Images