Quartz sand calcining and purifying equipment
By designing a quartz sand calcination and purification equipment with a large-diameter cylinder and spiral feeding blades, the problem of quartz tube diameter limitation was solved, enabling continuous batch production and high output of high-purity quartz, and improving the purification purity.
Patent Information
- Application Number
- CN202520531537.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The diameter limitation of quartz tubes in existing technologies results in low single-pass processing capacity of high-purity quartz purification equipment, which cannot meet the growing market demand for production capacity.
A quartz sand calcination and purification device was designed, which adopts a large-diameter cylinder and spiral feeding blades, combined with 310S stainless steel material and heating box to achieve continuous production. The inner wall of the cylinder is equipped with spiral feeding blades, and the spiral feeder is used to transport quartz sand. The discharge hood is equipped with a heating device to maintain the temperature, and the outer wall of the cylinder is equipped with a heat insulation layer for heat preservation.
It has enabled the continuous mass production of high-purity quartz, significantly increasing output. Furthermore, the use of stainless steel materials has prevented the precipitation of substances under high-temperature conditions from contaminating the quartz sand, thereby improving the purity.
Smart Images
Figure CN223869790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of quartz sand calcination and purification equipment, specifically to a quartz sand calcination and purification equipment. Background Technology
[0002] Internationally, quartz with a SiO2 content greater than 99.995% (i.e., 4N5) and an impurity content less than 50 μg / g is generally defined as high-purity quartz. High-purity quartz materials possess excellent physicochemical properties such as chemical stability, extremely low impurity content, high temperature resistance, corrosion resistance, low thermal expansion, and high insulation, making them a key basic material for the development of quartz glass, silicon materials, and related industries.
[0003] Currently, the purification of high-purity quartz typically involves placing quartz sand raw material inside a quartz tube and calcining it at high temperatures. However, the diameter of the quartz tube is limited by manufacturing processes; most industrial quartz tubes have a diameter range of only 200mm to 600mm, making it difficult to produce larger diameter tubes. This limitation results in a low single-pass capacity for purification equipment, failing to meet the market's growing demand for high-purity quartz. Utility Model Content
[0004] Therefore, this utility model provides a quartz sand calcination and purification equipment to solve the technical problem of low production capacity caused by the use of quartz tubes when calcining and purifying quartz sand into high-purity quartz in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A quartz sand calcination and purification device includes a workbench; the workbench rotatably houses a cylindrical body and a fixed drive device for rotating the cylindrical body; the cylindrical body has a feed hood on its left side for closing its left end and a discharge hood on its right side for closing its right end; a screw feeder is located on the workbench to the left of the feed hood; the screw feeder's screw rod passes through the feed hood and extends into the cylindrical body to feed the quartz sand to be calcined into the cylindrical body; the discharge hood has a discharge port at its bottom for discharging purified quartz sand; the cylindrical body is made of 310S stainless steel and has a heating box surrounding its outer circumference; heating rods are evenly distributed on the inner wall of the heating box for heating the cylindrical body; spiral feeding blades are arranged axially on the inner wall of the cylindrical body.
[0007] Preferably, the outer periphery of the cylinder on both sides of the heating box is covered with a cylinder insulation layer; the outer periphery of the feed hood is covered with a feed hood insulation layer; and the outer periphery of the discharge hood is covered with a discharge hood insulation layer.
[0008] Preferably, the feed hood is provided with a feed hood sealing device for sealing between the feed hood and the cylinder; the discharge hood is provided with a discharge hood sealing device for sealing between the discharge hood and the cylinder.
[0009] Preferably, the discharge hood is equipped with a discharge hood heating device to maintain the temperature of the discharge hood area.
[0010] Preferably, the pitch of the feed blades near the discharge hood area is greater than the pitch of the feed blades in the other areas.
[0011] Preferably, a manhole is provided on the side wall of the discharge hood away from the cylinder.
[0012] Preferably, the diameter of the cylinder is 1000mm to 5000mm.
[0013] This utility model has at least the following beneficial effects:
[0014] The kiln features a rotatable cylinder and a fixed drive unit on its worktable. A feed hood and a discharge hood are located on the left and right sides of the cylinder, respectively, along with a screw feeder. The screw feeder's spiral rod passes through the feed hood and extends into the cylinder. A discharge port is located at the bottom of the discharge hood. A heating chamber is fitted around the outer periphery of the cylinder. Heating rods are evenly distributed on the inner wall of the heating chamber for heating the kiln cylinder. Spiral feeding blades are arranged axially on the inner wall of the cylinder. In this way, the quartz sand to be calcined is fed into the cylinder by the screw feeder, heated to approximately 1000℃ in the heating chamber, and calcined and purified. Driven by the rotation of the spiral feeding blades, it is sequentially conveyed forward and then output from the discharge port, achieving batch and continuous production and significantly increasing the output of high-purity quartz. Simultaneously, the cylinder is made of 310S stainless steel, which prevents the precipitation of substances under high temperatures from contaminating the quartz sand, further improving the purity of the calcined and purified quartz.
[0015] Therefore, the quartz sand calcination and purification equipment of this utility model has the advantages of continuous batch calcination and purification of quartz sand, and significantly increases the output of high-purity quartz. Attached Figure Description
[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.
[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0018] Figure 1 This is a front sectional view of a quartz sand calcination and purification device according to the present invention;
[0019] Figure 2 This is a top view of a quartz sand calcination and purification device according to the present invention;
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Cylinder body; 101. Cylinder body insulation layer; 2. Roller ring; 3. Gear ring; 4. Feed hood; 401. Feed hood insulation layer; 5. Feed hood sealing device; 6. Heating box; 7. Heating rod; 8. Discharge hood; 801. Discharge hood insulation layer; 802. Discharge port; 9. Discharge hood sealing device; 10. Discharge hood heating device; 11. Manhole; 12. Support roller; 13. Screw feeder; 14. Workbench; 15. Motor. Detailed Implementation
[0022] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).
[0024] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.
[0025] This utility model relates to a quartz sand calcination and purification device, such as... Figure 1 , Figure 2As shown, a workbench 14 is provided, on which the kiln cylinder 1 is rotatably mounted. Specifically, it can adopt the rotation method of a rotary kiln well known to those skilled in the art, that is, a rolling ring 2 is fitted on the outer wall of the kiln cylinder 1, and a support roller 12 corresponding to the rolling ring 2 is fixedly mounted on the workbench 14. The rolling ring 2 is placed on the support roller 12 and rolls on the support roller. At the same time, a drive device for driving the rotation of the kiln cylinder 1 is fixedly mounted on the workbench 14. The drive device also adopts the rotary kiln rotation drive device well known to those skilled in the art, that is, a gear ring 3 is fitted on the outer wall of the kiln cylinder 1, and a motor 15 is fixedly mounted on the workbench 14. The motor 15 is connected to a reducer, and a gear is connected to the conveying shaft of the reducer. The gear and the gear ring 3 mesh, driving the gear ring 3 to rotate, thereby driving the kiln cylinder 1 to rotate. A feed hood 4 for closing its left end is provided on the left side of the kiln cylinder 1, and a discharge hood 8 for closing its right end is provided on the right side. Both the feed hood 4 and the discharge hood 8 adopt the feed and discharge hoods of the existing rotary kiln, which are prior art and will not be described in detail here. A screw feeder 13 is installed on the workbench 14 on the left side of the feed hood 4. The screw feeder 13's screw rod passes through the feed hood 4 and extends into the cylinder 1, where the calcined quartz sand is conveyed. A discharge port 802 is located at the bottom of the discharge hood 8, from which the purified quartz sand is discharged. To ensure the quartz sand is not contaminated under high-temperature conditions, the cylinder 1 is made of 310S stainless steel. A heating box 6 is fitted around the outer periphery of the cylinder 1, with heating rods 7 evenly distributed on the inner wall of the heating box 6 for heating the cylinder 1. Spiral feeding blades are arranged axially on the inner wall of the cylinder 1, so that the quartz sand is conveyed sequentially as the cylinder 1 rotates, thus enabling continuous production without interruption.
[0026] Preferably, the calcination and purification temperature of the quartz sand is around 1000℃. To ensure the temperature inside the cylinder 1, the outer periphery of the cylinder 1 on both sides of the heating box 6 is covered with a cylinder insulation layer 101; simultaneously, the outer periphery of the feed hood 4 is covered with a feed hood insulation layer 401, and the outer periphery of the discharge hood 8 is covered with a discharge hood insulation layer 801. These insulation layers serve to maintain the temperature, ensuring that the temperature inside the cylinder 1 reaches the process requirement of around 1000℃. These insulation layers can be made of commercially available materials such as mineral wool, polyurethane foam, and fiberglass.
[0027] Preferably, to seal the cylinder 1, the feed hood 4 is provided with a feed hood sealing device 5 for sealing between the feed hood 4 and the cylinder 1; the discharge hood 8 is provided with a discharge hood sealing device 9 for sealing between the discharge hood 8 and the cylinder 1. Both the feed hood sealing device 5 and the discharge hood sealing device 9 adopt the existing rotary kiln feed and discharge hood sealing devices, which are existing technologies and will not be described in detail here.
[0028] Preferably, to meet the temperature requirements of subsequent processes for purified quartz sand, the discharge hood 8 is equipped with a discharge hood heating device 10 to maintain the temperature of the discharge hood 8 area and prevent the purified quartz sand from cooling down in the discharge hood 8 area. The discharge hood heating device 10 can be implemented by installing heating rods on the top of the discharge hood 8. Simultaneously, the pitch of the feeding blades near the discharge hood 8 area can be made greater than the pitch of the feeding blades in other areas; by increasing the pitch, faster discharge can be achieved.
[0029] Preferably, in order to facilitate the inspection of the material status inside the cylinder 1 at any time, a manhole 11 is provided on the side wall of the discharge hood 8 away from the cylinder 1.
[0030] Preferably, the diameter of the cylinder 1 is 1000mm to 5000mm, which can achieve a production capacity of more than 1t / h.
[0031] The present application has been described in a relatively specific and detailed manner above through general descriptions and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.
Claims
1. A quartz sand calcination and purification device, characterized in that, The system includes a workbench (14); the workbench (14) is rotatably equipped with a cylinder (1) and a fixed drive device for driving the cylinder (1) to rotate; the cylinder (1) has a feed hood (4) on the left side for closing its left end and a discharge hood (8) on the right side for closing its right end; the workbench (14) on the left side of the feed hood (4) is equipped with a screw feeder (13); the screw feeder (13) has a screw feeding rod that passes through the feed hood (4) and extends into the cylinder (1) for conveying the quartz sand to be calcined into the cylinder (1); the discharge hood (8) has a discharge port (802) at the bottom for discharging purified quartz sand; the cylinder (1) is made of 310S stainless steel and has a heating box (6) on its outer periphery; the heating box (6) has heating rods (7) evenly distributed on its inner wall for heating the cylinder (1); the inner wall of the cylinder (1) has spiral feeding blades along the axial direction.
2. The quartz sand calcination and purification equipment according to claim 1, characterized in that, The outer periphery of the cylinder (1) on both sides of the heating box (6) is covered with a cylinder insulation layer (101); the outer periphery of the feed hood (4) is covered with a feed hood insulation layer (401); and the outer periphery of the discharge hood (8) is covered with a discharge hood insulation layer (801).
3. The quartz sand calcination and purification equipment according to claim 1, characterized in that, The feed hood (4) is provided with a feed hood sealing device (5) for sealing between the feed hood (4) and the cylinder (1); the discharge hood (8) is provided with a discharge hood sealing device (9) for sealing between the discharge hood (8) and the cylinder (1).
4. The quartz sand calcination and purification equipment according to claim 1, characterized in that, The discharge hood (8) is equipped with a discharge hood heating device (10) to maintain the temperature of the discharge hood area.
5. The quartz sand calcination and purification equipment according to claim 4, characterized in that, The pitch of the feed blades near the discharge hood (8) area is greater than the pitch of the feed blades in the other areas.
6. The quartz sand calcination and purification equipment according to claim 1, characterized in that, The discharge hood (8) has a manhole (11) on the side wall away from the cylinder (1).
7. A quartz sand calcination and purification device according to any one of claims 1 to 6, characterized in that, The diameter of the cylinder (1) is 1000mm to 5000mm.