Quartz sand dynamic soaking pickling reactor
By using the bubble stirring and rotation design of the dynamic immersion pickling reactor for quartz sand, the problem of powder separation during quartz sand pickling is solved, improving the pickling yield and production efficiency, and making it suitable for large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KAISEN QUARTZ MATERIALS (TAIHU) CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-21
AI Technical Summary
During the acid washing process of quartz sand, the powdery particles generated by stirring are difficult to separate, resulting in a decrease in acid washing yield, increased operational complexity, and loss of finished quartz sand.
A dynamic immersion pickling reactor using quartz sand is employed. Gas is transported through a gas circulation component to form bubbles, and a driving device rotates the reactor. Combined with an acid circulation component, this achieves uniform acid distribution and full contact between the acid and quartz sand, avoiding mechanical damage and reducing powder generation.
It improves pickling yield, reduces quartz sand loss, and simplifies the operation process, making it suitable for large-scale production needs.
Smart Images
Figure CN224524727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of quartz sand pickling technology, and in particular to a dynamic immersion pickling reactor for quartz sand. Background Technology
[0002] Quartz sand acid washing is a purification process that uses chemical methods to remove impurities from the surface and interior of quartz sand. Specifically, quartz sand is mixed with an acidic solution in a certain proportion to generate soluble salts, which are then removed by washing with water, thus completing the purification process.
[0003] During the acid washing of quartz sand, hydrochloric acid or hydrofluoric acid solution is slowly injected into the reaction tank according to the specified ratio. Then, pretreated quartz sand is added, ensuring the acid completely submerges the sand. The stirring device is turned on and stirred continuously at a medium speed for 2-4 hours to allow the acid to fully react with the iron, aluminum, and other metal oxides on the surface of the quartz sand, generating soluble compounds. After the reaction is complete, stirring is stopped, and the mixture is allowed to stand for 30 minutes to allow impurities to precipitate. The supernatant is then pumped out, and the sand is rinsed several times with clean water until neutral. Finally, it is dehydrated and dried to obtain high-purity quartz sand.
[0004] The shortcomings of the existing technical solutions are as follows: In the quartz sand acid washing process, although the stirring process can promote the full reaction between the acid and impurities on the surface of the quartz sand, the collision and friction between the quartz sand particles during stirring will generate a large number of powdery particles. Because of their small particle size, these powders are easily suspended in the acid solution and are difficult to separate effectively from the acid solution through sedimentation. An additional filtration process is required to recover the acid solution and repackage it for reuse, increasing the complexity of the operation. Furthermore, during the removal of the acid solution and the subsequent multiple rinsing of the sand with clean water until it reaches neutrality, these powdery particles are washed away, resulting in a reduction in the actual output of finished quartz sand and a decrease in the yield of quartz sand acid washing. Utility Model Content
[0005] This invention provides a dynamic soaking and pickling reactor for quartz sand, which can solve the problem in the prior art where stirring may generate a lot of powder during the quartz sand pickling operation, and this powder will lead to a decrease in the pickling yield during subsequent separation.
[0006] A dynamic immersion pickling reactor for quartz sand includes at least two sets of support brackets, with a reactor rotatably mounted between adjacent sets of support brackets. At least one set of support brackets is equipped with a drive device for rotating the reactor. A gas circulation assembly and an acid circulation assembly are mounted on the reactor. Support plates are fixedly mounted on both sides of the bottom of the reactor, and support railings for protecting the inlets of the gas circulation assembly and the acid circulation assembly are fixedly mounted on the support plates.
[0007] As a further embodiment of this utility model: the gas circulation assembly includes a gas supply pipe connected to the bottom of the reactor and an exhaust pipe connected to the top of the reactor, and a gas valve nozzle connected to the gas supply pipe is provided at the bottom of the reactor.
[0008] As a further embodiment of this utility model: the acid circulation assembly includes an acid discharge pipe connected to the bottom of the reactor and an acid delivery pipe connected to the top of the reactor, and an acid discharge filter head connected to the acid discharge pipe is provided at the bottom of the reactor.
[0009] As a further embodiment of this utility model: multiple sets of the reaction vessel and the support bracket are provided, with multiple sets of the reaction vessel and multiple sets of support brackets arranged at intervals, and a drive shaft is fixedly provided between two adjacent sets of the reaction vessel.
[0010] As a further embodiment of this utility model: both the exhaust pipe and the acid delivery pipe are suspended above the reactor, and both the exhaust pipe and the acid delivery pipe are designed with redundant length.
[0011] As a further embodiment of this utility model: the support plate is distributed on the left and right sides of the bottom of the reactor, so that the quartz sand can penetrate the bottom of the support plate from front to back.
[0012] As a further embodiment of this utility model: each set of exhaust pipes is provided with multiple sets of exhaust branch pipes connected to the corresponding gas valve nozzles, and each set of gas supply pipes is provided with multiple sets of gas supply branch pipes connected to the corresponding reaction vessel.
[0013] As a further embodiment of this utility model: each set of acid discharge pipes is provided with multiple sets of acid discharge branch pipes connected to the corresponding acid discharge filter head, and each set of acid delivery pipes is provided with multiple sets of acid delivery branch pipes connected to the corresponding reaction vessel.
[0014] As a further embodiment of this utility model: the support railing is provided with an opening portion and a solid portion, and each set of air valve nozzles and acid discharge filter heads is located directly below the solid portion of the support railing.
[0015] As a further embodiment of this utility model: the driving device is provided in two sets, and the two sets of driving devices are respectively located at both ends of the support bracket queue, and the output end of each set of driving devices is connected to the corresponding reaction vessel transmission.
[0016] The beneficial effects of this utility model are:
[0017] 1. In use, this invention delivers working gas to the bottom of the reactor via a gas circulation component. The gas forms bubbles that rise, stirring the acid solution and altering its properties, thus promoting impurity removal. Furthermore, the drive device rotates the reactor slowly back and forth, changing the direction of bubble flow and resulting in a more uniform bubble distribution, further enhancing the stirring effect. Simultaneously, the reactor's rotation promotes acid flow, ensuring thorough contact between the acid and all parts of the quartz sand, leading to more uniform acid leaching. This stirring method avoids the mechanical damage caused by traditional stirring. While the quartz sand vibrates due to the acid flow and bubble thrust, it does not produce a large amount of powder, reducing losses during the pickling process and increasing the pickling yield.
[0018] 2. In large-scale production, this invention features multiple sets of reaction vessels and support brackets spaced apart and connected by a drive shaft for coordinated operation. This allows for simultaneous acid washing of large quantities of quartz sand, meeting the demands of large-scale production. Furthermore, the reaction vessels are equipped with support plates containing openings and solid sections. The gas valve nozzle and acid discharge filter head are located directly below the solid section, effectively protecting these components and preventing damage from falling quartz sand, ensuring their normal operation. Simultaneously, the support plates are distributed on both sides of the bottom of the reaction vessels, allowing quartz sand to pass through the bottom of the support plates. During tilting, gravity causes the sand to leave the bottom of the support plates, reducing accumulation and ensuring the acid washing effect. This also facilitates subsequent cleaning. Attached Figure Description
[0019] Figure 1 A schematic diagram of the overall structure of a quartz sand dynamic soaking and pickling reactor provided by this utility model;
[0020] Figure 2 A schematic diagram of the exhaust pipe, air supply pipe, acid supply pipe, and acid discharge pipe of a quartz sand dynamic soaking and pickling reactor provided by this utility model;
[0021] Figure 3 A schematic diagram of the internal structure of a quartz sand dynamic soaking and pickling reactor provided by this utility model;
[0022] Figure 4 This utility model provides a schematic diagram of the position and structure of the support plate of a quartz sand dynamic soaking and pickling reactor.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Support bracket; 2. Drive unit; 3. Reactor; 301. Support railing; 302. Gas valve nozzle; 303. Support plate; 304. Acid discharge filter head; 4. Exhaust pipe; 401. Exhaust branch pipe; 5. Gas supply pipe; 501. Gas supply branch pipe; 6. Acid supply pipe; 601. Acid supply branch pipe; 7. Acid discharge pipe; 701. Acid discharge branch pipe. Detailed Implementation
[0025] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.
[0026] like Figures 1 to 4 As shown in the figure, the present invention provides a dynamic immersion pickling reactor for quartz sand, comprising at least two sets of support brackets 1, with a reactor 3 rotatably mounted between adjacent sets of support brackets. At least one set of support brackets 1 is equipped with a drive device 2 for rotating the reactor 3. In practical applications, the drive device 2 is preferably a hydraulic motor. The hydraulic motor can provide sufficient torque to drive the reactor 3 to slowly reciprocate during the pickling process. This reciprocating rotation method, compared to traditional unidirectional stirring, allows the acid solution to fully contact the quartz sand, improving the pickling effect. The reactor 3 is equipped with a gas circulation component and an acid circulation component. Support plates 303 are fixedly mounted on both sides of the bottom of the reactor 3, and support railings 301 are fixedly mounted on the support plates 303. The main function of the support railings 301 is to protect the inlets of the gas circulation component and the acid circulation component, preventing damage to the inlets by the quartz sand during the pickling process and affecting the normal operation of the components.
[0027] In actual operation, the workers first inject acid into the reactor 3 through the acid circulation component, and then pour in a certain amount of quartz sand. Next, the working gas is transported to the bottom of the reactor 3 through the gas circulation component. The transport of the working gas can agitate the acid, thereby achieving a uniform acid etching effect.
[0028] The choice of reacting gas can be oxygen (O2), ozone (O3), hydrogen (H2), or carbon monoxide (CO), or a mixture thereof. Different reacting gases play different roles in the pickling process. Introducing oxygen or ozone enhances the oxidizing power of the acid solution, which promotes the oxidative decomposition of certain sparingly soluble impurities (such as organic matter and sulfides), making these impurities easier to separate from the quartz sand. Introducing hydrogen or carbon monoxide reduces metal oxides under acidic conditions (e.g., Fe2O3→Fe). After the reduction reaction, the properties of the metal oxides change, thus simplifying subsequent separation steps and improving production efficiency.
[0029] Specifically, the gas circulation assembly includes a gas supply pipe 5 connected to the bottom of the reactor 3 and an exhaust pipe 4 connected to the top of the reactor 3. A gas valve nozzle 302 connected to the gas supply pipe 5 is installed at the bottom of the reactor 3. The acid circulation assembly includes an acid discharge pipe 7 connected to the bottom of the reactor 3 and an acid supply pipe 6 connected to the top of the reactor 3. An acid discharge filter head 304 connected to the acid discharge pipe 7 is installed at the bottom of the reactor 3. The acid supply pipe 6 is responsible for supplying acid liquid into the reactor 3, ensuring that the acid liquid can fully cover the quartz sand for acid washing. The gas supply pipe 5 is responsible for supplying reactive gas to the bottom of the reactor 3. After entering the reactor 3, the reactive gas changes the properties and state of the acid liquid through stirring and oxidation, thereby better removing impurities from the quartz sand. After completing the stirring and oxidation process, the reactive gas is discharged through the exhaust pipe 4. The drive device 2 can drive the reactor 3 to slowly reciprocate. This rotation method can change the flow direction of the reactive gas and improve the stirring effect. Simultaneously, the rotation of reactor 3 promotes acid flow, resulting in more uniform acid leaching and ensuring that all parts of the quartz sand are thoroughly acid-washed. After acid leaching, the acid is gradually extracted through the acid discharge filter head 304 and the acid discharge pipe 7. Throughout the acid washing process, the quartz sand vibrates due to the flow of acid and the thrust of air bubbles. However, this vibration differs from traditional stirring methods and does not cause mechanical damage as is often the case. Therefore, less powder is produced, resulting in less loss and thus improving the acid washing yield.
[0030] Ideally, both the exhaust pipe 4 and the acid delivery pipe 6 should be suspended above the reactor 3, and both should have redundant lengths. This facilitates the slow rotation of the reactor 3, ensuring that the exhaust pipe 4 and the acid delivery pipe 6 will not affect the normal operation of the reactor 3 due to length limitations, thus guaranteeing the smooth progress of the entire pickling process.
[0031] Support plates 303 are distributed on the left and right sides of the bottom of the reactor 3. This layout allows quartz sand to penetrate the bottom of the support plates 301 from front to back. When pouring quartz sand, due to gravity, the quartz sand moves towards the front of the reactor 3, thus leaving the bottom of the support plates 301. This reduces the amount of quartz sand trapped at the bottom of the support plates 301, preventing quartz sand accumulation during pickling, which would affect the pickling effect and subsequent cleaning. The support plates 301 have open sections and solid sections. Each set of air valve nozzles 302 and acid discharge filter heads 304 are located directly below the solid section of the support plates 301. This layout protects the air valve nozzles 302 and acid discharge filter heads 304, preventing damage from falling quartz sand that could affect the normal operation of the components. The solid section of the support plates 301 provides effective blocking and protection.
[0032] In one specific embodiment, one set of reaction vessels 3 is provided, and two sets of support brackets 1 are provided. The reaction vessel 3 is located in the middle of the support brackets 1, and the drive device 2 is located on one side of the support brackets 1. In this layout, through the working principle described above, acid is injected through the acid circulation component, quartz sand is poured in, and then working gas is transported through the gas circulation component for stirring and oxidation. Finally, the drive device 2 drives the reaction vessel 3 to rotate to achieve uniform acid washing, thus completing the acid leaching operation of the quartz sand.
[0033] In another specific embodiment, multiple sets of reactors 3 and support brackets 1 are provided, with multiple sets of reactors 3 and multiple sets of support brackets 1 arranged at intervals, and a drive shaft is fixedly installed between each pair of adjacent reactors 3. This arrangement is suitable for large-scale production, as multiple reactors 3 can be connected by the drive shaft to achieve coordinated operation and improve production efficiency.
[0034] In this embodiment, each set of exhaust pipes 4 is equipped with multiple sets of exhaust branch pipes 401 connected to the corresponding gas valve nozzles 302, and each set of gas supply pipes 5 is equipped with multiple sets of gas supply branch pipes 501 connected to the corresponding reaction vessel 3. Each set of acid discharge pipes 7 is equipped with multiple sets of acid discharge branch pipes 701 connected to the corresponding acid discharge filter head 304, and each set of acid supply pipes 6 is equipped with multiple sets of acid supply branch pipes 601 connected to the corresponding reaction vessel 3. Each main pipe delivers acid through its corresponding branch pipes, enabling both diversion and collection operations. During the pickling process, the diversion operation can evenly deliver the acid or gas to each reaction vessel 3, ensuring consistent pickling conditions in each reaction vessel 3. After pickling, the collection operation can centrally discharge the acid or gas from each reaction vessel 3, facilitating subsequent processing and management.
[0035] In this embodiment, the drive device 2 can be provided in two sets, with the two sets of drive devices 2 located at opposite ends of the support bracket 1 array. The output end of each set of drive devices 2 is connected to the corresponding reaction vessel 3 in a transmission cooperation manner, such as... Figure 1 As shown. This setup provides sufficient torque because the reactor 3 rotates while carrying acid and silica sand, requiring significant torque to overcome resistance. The simultaneous operation of the two drive units 2 ensures stable and slow reciprocating rotation of the reactor 3, thus achieving a good pickling effect.
[0036] Working principle: Acid is supplied to the inside of the reactor 3 through the acid supply pipe 6 of the acid circulation component, and then a certain amount of quartz sand is poured into the reactor 3, with the quartz sand covered by the acid.
[0037] The gas circulation assembly is then activated, supplying the working gas to the bottom of the reactor 3 via the gas supply pipe 5. Various options are available for the working gas, including oxygen (O2), ozone (O3), hydrogen (H2), or carbon monoxide (CO), or a mixture thereof. When oxygen or ozone is introduced, the oxidizing power of the acid is enhanced. This enhancement promotes the oxidative decomposition of certain insoluble impurities in the quartz sand (such as organic matter and sulfides), making these impurities easier to remove in the acid. If hydrogen or carbon monoxide is introduced, metal oxides (such as Fe2O3→Fe) can be reduced under acidic conditions. After the reduction reaction, the properties of the metal oxides change, simplifying subsequent separation steps and improving production efficiency. The working gas is ejected from the gas valve nozzle 302 at the bottom of the reactor 3, forming bubbles in the acid and rising. During this rising process, the bubbles agitate the acid, and the gas's own oxidizing power also participates in the acid etching reaction, altering the properties and state of the acid, thereby achieving uniform acid etching of the quartz sand.
[0038] The drive unit 2 drives the reactor 3 to slowly reciprocate. This rotation changes the flow direction of the working gas in the acid solution, making the bubble distribution more uniform and further improving the stirring effect. At the same time, the rotation of the reactor 3 also promotes the flow of the acid solution inside the reactor 3, ensuring that the acid solution can fully contact all parts of the quartz sand, making the acid leaching process more uniform and ensuring that each grain of quartz sand is fully acid-washed.
[0039] As the pickling reaction continues, impurities in the quartz sand are gradually removed. Throughout the pickling process, the quartz sand vibrates due to the flow of acid and the thrust of air bubbles. However, this vibration differs from traditional stirring methods and does not cause mechanical damage to the quartz sand, resulting in less powder production. This reduces losses during the pickling process and increases the pickling yield.
[0040] Once the pickling process has reached the predetermined time or achieved the desired pickling effect, the supply of the working gas is stopped, and the acid solution inside the reactor 3 is gradually extracted through the acid discharge filter head 304 and the acid discharge pipe 7. The acid discharge filter head 304 can filter out some solid impurities in the acid solution. During the acid discharge process, the acid solution enters the acid discharge branch pipe 701 from the bottom of the reactor 3 through the acid discharge filter head 304, and then converges into the acid discharge pipe 7 for discharge.
[0041] After the acid solution is drained, open reactor 3 and pour out the acid-washed quartz sand. Since the support plates 303 are located on the left and right sides of the bottom of reactor 3, the quartz sand can penetrate the bottom of the support plates 301. During pouring, under the influence of gravity, the quartz sand will move towards the front of reactor 3, thus leaving the bottom of the support plates 301. This reduces the possibility of quartz sand accumulating at the bottom of the support plates 301, facilitating subsequent cleaning of reactor 3 and preparing for the next acid washing operation.
[0042] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. A dynamic immersion pickling reactor for quartz sand, comprising at least two sets of support brackets (1), characterized in that, A reactor (3) is rotatably mounted between two adjacent sets of support brackets. At least one set of support brackets (1) is equipped with a drive device (2) for rotating the reactor (3). A gas circulation assembly and an acid circulation assembly are mounted on the reactor (3). Support plates (303) are fixedly mounted on both sides of the bottom of the reactor (3). Support plates (301) for protecting the inlets of the gas circulation assembly and the acid circulation assembly are fixedly mounted on the support plates (303).
2. The quartz sand dynamic soaking and acid washing reactor as described in claim 1, characterized in that, The gas circulation assembly includes a gas supply pipe (5) connected to the bottom of the reactor (3) and an exhaust pipe (4) connected to the top of the reactor (3). A gas valve nozzle (302) connected to the gas supply pipe (5) is provided at the bottom of the reactor (3).
3. The quartz sand dynamic soaking and acid washing reactor as described in claim 2, characterized in that, The acid circulation assembly includes an acid discharge pipe (7) connected to the bottom of the reactor (3) and an acid delivery pipe (6) connected to the top of the reactor (3). An acid discharge filter head (304) connected to the acid discharge pipe (7) is provided at the bottom of the reactor (3).
4. The quartz sand dynamic soaking and acid washing reactor as described in claim 3, characterized in that, Multiple sets of the reactor (3) and the support bracket (1) are provided. Multiple sets of reactor (3) and multiple sets of support bracket (1) are arranged at intervals, and a drive shaft is fixedly provided between two adjacent sets of reactor (3).
5. A quartz sand dynamic soaking and acid washing reactor as described in claim 3 or 4, characterized in that, The exhaust pipe (4) and the acid delivery pipe (6) are both suspended above the reactor (3), and both the exhaust pipe (4) and the acid delivery pipe (6) are designed with redundant length.
6. The quartz sand dynamic soaking and acid washing reactor as described in claim 5, characterized in that, The support plate (303) is distributed on the left and right sides of the bottom of the reactor (3), so that the quartz sand can penetrate the bottom of the support plate (301) from front to back.
7. The quartz sand dynamic soaking and acid washing reactor as described in claim 4, characterized in that, Each set of exhaust pipes (4) is provided with multiple sets of exhaust branch pipes (401) connected to the corresponding gas valve nozzles (302), and each set of gas supply pipes (5) is provided with multiple sets of gas supply branch pipes (501) connected to the corresponding reaction vessel (3).
8. The quartz sand dynamic soaking and acid washing reactor as described in claim 7, characterized in that, Each set of acid discharge pipes (7) is provided with multiple sets of acid discharge branch pipes (701) connected to the corresponding acid discharge filter head (304), and each set of acid delivery pipes (6) is provided with multiple sets of acid delivery branch pipes (601) connected to the corresponding reaction vessel (3).
9. The quartz sand dynamic soaking and acid washing reactor as described in claim 5, characterized in that, The support panel (301) has an opening and a solid part, and each set of air valve nozzles (302) and acid discharge filter heads (304) is located directly below the solid part of the support panel (301).
10. The quartz sand dynamic soaking and acid washing reactor as described in claim 4, characterized in that, The drive device (2) is provided in two sets, and the two sets of drive devices (2) are located at both ends of the support bracket (1) queue, and the output end of each set of drive devices (2) is connected to the corresponding reaction vessel (3) in a transmission cooperation.