Crystallization agent adding and sintering process for preparing glass ceramics from dolomite tailings

Abstract

The invention provides a nucleating agent adding and sintering process for preparing microcrystalline glass from dolomite tailings. The nucleating agent adding and sintering process comprises the following steps: step 1, preparing raw materials and auxiliary materials; step 2, burdening and mixing: the main raw materials and auxiliary raw materials are stirred and mixed into a glass raw material, the auxiliary raw materials comprise a nucleating agent, and the nucleating agent and the raw materials are stirred and mixed through stirring equipment; step 3, sintering; 4, preheating and waste heat recovery; step 5, cooling; and step 6, finishing. In use, after raw materials enter the fixing cylinder, the crushing column rotates to collide the entered raw materials for re-crushing, the crushed raw materials move downwards to the fixing seat, and in the later period, a fixing plate drives a gear ring to rotate, and meanwhile, the fixing plate moves on the surface of the fixing seat to push materials on a filtering plate; the later filtering use is convenient.

Description

Technical Field

[0001] This invention relates to the field of glass-ceramic sintering equipment, specifically to the nucleating agent addition and sintering process for preparing glass-ceramic from dolomite tailings. Background Technology

[0002] Glass-ceramics are polycrystalline solid-phase materials containing glass, produced by controlled nucleation and crystallization of base glass with certain specific compositions at a certain temperature. The sintering device is one of the important pieces of equipment in the glass-ceramics production process, as the raw materials cannot be crushed or filtered during sintering.

[0003] According to patent document CN118702402B, a sintering apparatus and method for microcrystalline glass is disclosed, which includes a chain conveyor. A sintering box is provided at the right end of the chain conveyor, and a pretreatment mechanism is provided on the top of the chain conveyor, located on the left side of the sintering box. The pretreatment mechanism includes a preheating box fitted on the top of the chain conveyor. Two heat insulation plates are provided inside the preheating box, which divides the internal space of the preheating box from left to right into a primary preheating chamber, a secondary preheating chamber, and a tertiary preheating chamber. When using this technical solution, [the following text appears to be a separate, unrelated section:] ... The airflow exiting the sintering chamber utilizes waste heat, allowing the airflow to pass through multiple preheating chambers in one go. This allows the glass particles to be preheated step by step by the airflow before being directly sintered in the sintering chamber. The temperature of the glass particles is higher the closer they are to the sintering chamber, ultimately reducing the temperature difference between the glass particles and the inside of the sintering chamber, improving the sintering effect of the glass particles, and reducing the formation of surface cracks. However, while this technical solution avoids the formation of cracks, it cannot crush and mix the raw materials before they enter the chamber, and it is not convenient for filtering materials, which is inconvenient in use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings, thereby solving the problems mentioned in the background art. The present invention has a novel structure. In use, after the raw material enters the fixed cylinder, the rotation of the crushing column collides with the incoming raw material to further crush it. The crushed raw material moves downward to the fixed seat. Later, the fixed plate drives the gear ring to rotate while the fixed plate moves on the surface of the fixed seat to push the material on the filter plate, which facilitates subsequent filtration.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings, comprising the following steps: Step 1: Prepare raw materials and auxiliary materials. Use high-purity, uniformly sized sand as the main raw material, and prepare soda ash, limestone, oxidizing agent, decolorizing agent, and clarifying agent as auxiliary raw materials. Step 2: Ingredient preparation and mixing. The main raw materials and auxiliary materials are stirred and mixed to form glass raw materials. The auxiliary materials include nucleating agents. The nucleating agents and raw materials are stirred and mixed using a stirring device. Step 3: Sintering; Step 4: Preheating and Waste Heat Recovery; Step 5: Cooling. After sintering, the sintered glass-ceramic needs to be cooled. Step Six: Finishing. Finally, the microcrystalline glass product is finished and processed to obtain the molded part.

[0006] Furthermore, in step three, the mixed glass raw materials are filled into the sintering mold and then placed in a high-temperature furnace for sintering. In step four, the residual heat is recovered to the preheating device, and the preheating device is activated to preheat the glass raw materials after the next batch of glass raw materials is placed in the high-temperature furnace.

[0007] Furthermore, during sintering in step three, the uniformly mixed glass batch is melted in a furnace at a temperature of 1500–1700°C. After reaching the melting temperature, the batch is kept at that temperature for 1–5 hours before being removed.

[0008] Furthermore, the mixing device in step two includes a base, a box body is fixed to the top of the base, a lifting mechanism and a barrel body are fixed to the top of the box body, the lifting mechanism is fixedly installed on the side of the barrel body, a drive motor and a feed pipe are fixed to the top of the barrel body, a fixed cylinder is fixed to the side of the barrel body, and a feed hopper is fixedly installed on the top of the fixed cylinder.

[0009] Furthermore, a fixing seat is fixed to the top of the box, a gear ring is rotatably mounted on the side of the fixing seat, the barrel is fixedly mounted on the side of the gear ring, a sealing ring is fixed on the inner wall of the barrel, and the sealing ring is mounted on the top of the gear ring.

[0010] Furthermore, a fixing plate is welded to the top of the gear ring, a rotating column is welded between the fixing plates, one end of the rotating column is fixed to the drive motor, and a breaking column is welded to the rotating column.

[0011] Furthermore, a melting furnace is fixed inside the box, a heating coil is fixed on the side of the melting furnace, and a power connector is fixed at one end of the heating coil. The power connector is fixed on the side of the box.

[0012] Furthermore, a movable column is telescopically installed on the lifting mechanism, a ring seat is fixed at one end of the movable column, a scraper is welded to the bottom of the ring seat, an arc groove is opened between the scrapers, and the scrapers are rotatably mounted on the rotating column through the arc groove.

[0013] Furthermore, a rotating seat is fixed to one end of the rotating column, the rotating seat is movably installed inside the melting furnace, the ring seat is movably installed inside the melting furnace, a discharge cylinder is fixed between the melting furnace and the box body, a discharge hole and an installation hole are respectively opened on the rotating seat, a filter plate is fixed inside the discharge hole, and the installation hole is movably installed on the rotating column.

[0014] Furthermore, a partition plate and a limiting plate are fixed inside the fixed cylinder, and an output shaft is fixed between the partition plate and the limiting plate. A gear is fixed at one end of the output shaft and is movably mounted on the side of the gear ring. A toggle plate is fixed at the other end of the output shaft and is movably mounted on the top of the partition plate.

[0015] The beneficial effects of this invention are: In this invention, when the raw material enters the fixed cylinder, the rotation of the crushing column collides with the incoming raw material to crush it again. The crushed raw material moves downward to the fixed seat. Later, the fixed plate drives the gear ring to rotate, and at the same time, the fixed plate moves on the surface of the fixed seat to push the material on the filter plate, which facilitates the subsequent filtration.

[0016] In this invention, the gear ring rotates while driving the gear to rotate, and the gear rotation drives the output shaft and the actuating plate to rotate. The rotation of the actuating plate centrifugally discharges the material on the top of the partition plate to one side. The nucleating agent is lifted into the interior of the fixed cylinder by the actuating plate. The nucleating agent and the raw materials tumble and collide inside the fixed cylinder, which facilitates rapid addition and mixing in the later stage.

[0017] In this invention, the ring seat is pushed into the interior of the melting furnace by the lifting mechanism. The ring seat scrapes and cleans the inner wall of the melting furnace. When the ring seat descends, the rotating column rotates slowly. The scraper and the arc groove cooperate to scrape and clean the surface of the rotating column. Later, when the ring seat descends to the top of the rotating seat, the scraper scrapes and cleans the cooled glass raw material. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to the present invention. Figure 2 This is a schematic diagram of the stirring equipment used in the nucleating agent addition and sintering process of preparing microcrystalline glass from dolomite tailings according to the present invention. Figure 3 This is a schematic diagram of the structure after the removal of the fixed bucket in the process of adding nucleating agents and sintering in the preparation of microcrystalline glass from dolomite tailings according to the present invention. Figure 4 This is a schematic diagram of the structure of the fixing seat used in the nucleating agent addition and sintering process of preparing microcrystalline glass from dolomite tailings according to the present invention. Figure 5This is a schematic diagram of the melting furnace used in the process of adding nucleating agents and sintering dolomite tailings to prepare microcrystalline glass according to the present invention. Figure 6 This is a schematic diagram of the ring seat structure for the nucleating agent addition and sintering process of preparing microcrystalline glass from dolomite tailings according to the present invention. Figure 7 This is a schematic diagram of the rotating seat used in the nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to the present invention. Figure 8 This is a side cross-sectional view of the fixed cylinder structure used in the nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to the present invention. In the diagram: 1. Base; 2. Box; 3. Discharge cylinder; 4. Barrel; 5. Feed pipe; 6. Drive motor; 7. Fixed cylinder; 8. Feed hopper; 9. Lifting mechanism; 10. Electrical connector; 11. Fixed seat; 12. Gear ring; 13. Fixed plate; 14. Rotating column; 15. Crushing column; 17. Discharge hole; 18. Mounting hole; 19. Melting furnace; 20. Heating coil; 21. Movable column; 22. Ring seat; 23. Scraper; 24. Arc groove; 25. Rotating seat; 26. Divider plate; 27. Limiting plate; 28. Output shaft; 29. ​​Gear; 30. Actuating plate; 31. Sealing ring. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1 to 8 This invention provides a technical solution: a nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings, comprising the following steps: Step 1: Prepare raw materials and auxiliary materials. Use high-purity, uniformly sized sand as the main raw material, and prepare soda ash, limestone, oxidizing agent, decolorizing agent, and clarifying agent as auxiliary raw materials. Step 2: Ingredient preparation and mixing. The main raw materials and auxiliary materials are stirred and mixed to form glass raw materials. The auxiliary materials include nucleating agents. The nucleating agents and raw materials are stirred and mixed using a stirring device. Step 3: Sintering; Step 4: Preheating and Waste Heat Recovery; Step 5: Cooling. After sintering, the sintered glass-ceramic needs to be cooled. Step Six: Finishing. Finally, the microcrystalline glass product is finished and processed to obtain the molded part.

[0021] In this embodiment, in step three, the mixed glass raw materials are filled into a sintering mold and then placed in a high-temperature furnace for sintering. In step four, the residual heat is recovered to a preheating device. After the next batch of glass raw materials is placed in the high-temperature furnace, the preheating device is activated to preheat the glass raw materials. During sintering in step three, the uniformly mixed glass batch is melted in a furnace at a melting temperature of 1500-1700°C. After reaching the melting temperature, the batch is kept at that temperature for 1-5 hours before being removed.

[0022] In this embodiment, the stirring device in step two includes a base 1, a box 2 fixed to the top of the base 1, a lifting mechanism 9 and a barrel 4 fixed to the top of the box 2, the lifting mechanism 9 fixedly installed on the side of the barrel 4, a drive motor 6 and a feed pipe 5 fixed to the top of the barrel 4, a fixed cylinder 7 fixed to the side of the barrel 4, and a feed hopper 8 fixedly installed on the top of the fixed cylinder 7. The lifting mechanism 9 is a linear reciprocating electric push rod. The lifting mechanism 9 pushes the ring seat 22 downward to scrape and clean the inner wall of the melting furnace 19 while scraping and cleaning the rotating seat 25.

[0023] In this embodiment, a fixed base 11 is fixed to the top of the box 1, and a gear ring 12 is rotatably mounted on the side of the fixed base 11. The barrel 4 is fixedly mounted on the side of the gear ring 12. A sealing ring 31 is fixed on the inner wall of the barrel 4 and is mounted on the top of the gear ring 12. A fixed plate 13 is welded to the top of the gear ring 12, and a rotating column 14 is welded between the fixed plates 13. One end of the rotating column 14 is fixed to the drive motor 6, and a crushing column 15 is welded to the rotating column 14. A melting furnace 19 is fixed inside the box 2, and a heating coil 20 is fixed to the side of the melting furnace 19. One end of the heating coil 20 is fixed to a power connector 10, which is fixed to the side of the box 2. The rotation of the rotating column 14 provides rotational power to the gear ring 12 through the fixed plate 13. The rotation of the gear ring 12 cooperates with the gear 29 to drive the output shaft 18 to rotate at high speed for feeding.

[0024] In this embodiment, a movable column 21 is telescopically mounted on the lifting mechanism 9. A ring seat 22 is fixed to one end of the movable column 21. A scraper 23 is welded to the bottom of the ring seat 22. An arc-shaped groove 24 is formed between the scraper 23s. The scraper 23s are rotatably mounted on the rotating column 14 through the arc-shaped groove 24. A rotating seat 25 is fixed to one end of the rotating column 14. The rotating seat 25 is movably mounted inside the melting furnace 19. The ring seat 22 is movably mounted inside the melting furnace 19. A discharge hole 17 and a mounting hole 8 are respectively formed on the rotating seat 25. A filter plate is fixed inside the discharge hole 17, and the mounting hole 18 is movably mounted on the rotating column. On 14, a discharge cylinder 3 is fixed between the melting furnace 19 and the housing 2. A partition plate 26 and a limiting plate 27 are fixed inside the fixed cylinder 7. An output shaft 28 is fixed between the partition plate 26 and the limiting plate 27. A gear 29 is fixed at one end of the output shaft 28. The gear 29 is movably installed on the side of the gear ring 12. A toggle plate 30 is fixed at the other end of the output shaft 28. The toggle plate 30 is movably installed on the top of the partition plate 26. The fixed plate 13 slowly rotates on the top of the discharge hole 17. The fixed plate 13 pushes the raw material on the surface of the filter plate to move, thus avoiding clogging the filter plate while filtering.

[0025] Working Principle: When in use, the glass raw material to be processed enters the interior of the barrel 4 through the feed pipe 5. The drive motor 6 is started, driving the rotating column 14 to rotate. As the rotating column 14 rotates, the crushing column 15 further crushes the falling raw material, pouring the nucleating agent into the feed hopper 8. The nucleating agent then flows downwards into the fixed cylinder 7. The rotating column 14 drives the gear ring 12 to rotate via the fixed plate 13. The gear ring 12, in conjunction with the gear 29, drives the output shaft 18 to rotate. When the output shaft 18 rotates, the agitator plate 30 rotates on top of the partition plate 26, causing the material on top of the partition plate 26 to enter the interior of the barrel 4 from one side. The material is lifted by the agitator, facilitating collision and mixing with the incoming raw material. It is then further mixed by the stirring column 15. After the raw material is crushed again, the drive motor 6 rotates slowly, causing the rotating column 14 to drive the fixed plate 13 to rotate slowly on the surface of the fixed seat 11. The fixed plate 13 then slowly moves towards the discharge hole. The top of 17 rotates, and the fixed plate 13 pushes the raw material on the surface of the filter plate to move. While moving to filter, the material avoids clogging the filter plate. After the material passes through the filter plate inside the discharge hole 17, it falls into the interior of the melting furnace 19 through the opening between the ring seats 22. The heating coil 20 on the side of the melting furnace 19 is energized to heat the melting furnace 198. When the material melts inside the melting furnace 19, the rotating column 14 drives the rotating seat 25 to rotate slowly. The rotating seat 25 drives the flow of the internal solution to heat it. After the raw material melts, the discharge cylinder 3 is opened to discharge the material inside the melting furnace 19 outward. After the material is discharged, glass liquid will remain on the surface of the rotating column 14 and the rotating seat 25. The lifting mechanism 9 is activated to push the movable column 21 downward. The side of the ring seat 22 contacts the inner wall of the melting furnace 19 for scraping and cleaning. When the scraper 23 at the bottom of the ring seat 22 contacts the top of the rotating seat 25, the rotating seat 25 rotates slowly and scrapes the glass material off through the scraper 23.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings, characterized in that: Includes the following steps: Step 1: Prepare raw materials and auxiliary materials. Use high-purity, uniformly sized sand as the main raw material, and prepare soda ash, limestone, oxidizing agent, decolorizing agent, and clarifying agent as auxiliary raw materials. Step 2: Ingredient preparation and mixing. The main raw materials and auxiliary materials are stirred and mixed to form glass raw materials. The auxiliary materials include nucleating agents. The nucleating agents and raw materials are stirred and mixed using a stirring device. Step 3: Sintering; Step 4: Preheating and Waste Heat Recovery; Step 5: Cooling. After sintering, the sintered glass-ceramic needs to be cooled. Step Six: Finishing. Finally, the microcrystalline glass product is finished and processed to obtain the molded part.

2. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 1, characterized in that: In step three, the mixed glass raw materials are filled into the sintering mold and then placed in a high-temperature furnace for sintering. In step four, the residual heat is recovered to the preheating device, and the preheating device is activated to preheat the glass raw materials after the next batch of glass raw materials is placed in the high-temperature furnace.

3. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 1, characterized in that: In step three, during sintering, the uniformly mixed glass batch is melted in a furnace at a temperature of 1500–1700°C. After reaching the melting temperature, the batch is kept at that temperature for 1–5 hours before being removed.

4. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 1, characterized in that: The mixing equipment in step two includes a base, a box body fixed to the top of the base, a lifting mechanism and a barrel body fixed to the top of the box body, the lifting mechanism fixedly installed on the side of the barrel body, a drive motor and a feed pipe fixed to the top of the barrel body, a fixed cylinder fixed to the side of the barrel body, and a feed hopper fixedly installed on the top of the fixed cylinder.

5. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 4, characterized in that: A fixed base is fixed to the top of the box, and a gear ring is rotatably mounted on the side of the fixed base. The barrel is fixedly mounted on the side of the gear ring, and a sealing ring is fixed on the inner wall of the barrel. The sealing ring is mounted on the top of the gear ring.

6. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 5, characterized in that: A fixing plate is welded to the top of the gear ring, and a rotating column is welded between the fixing plates. One end of the rotating column is fixed to the drive motor, and a breaking column is welded to the rotating column.

7. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 4, characterized in that: A melting furnace is fixed inside the box, and a heating coil is fixed to the side of the melting furnace. One end of the heating coil is fixed to a power connector, which is fixed to the side of the box.

8. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 4, characterized in that: The lifting mechanism is equipped with a telescopic movable column. One end of the movable column is fixed with a ring seat. A scraper is welded to the bottom of the ring seat. An arc-shaped groove is opened between the scrapers. The scrapers are rotatably mounted on the rotating column through the arc-shaped groove.

9. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 8, characterized in that: One end of the rotating column is fixed with a rotating seat, which is movably installed inside the melting furnace. The ring seat is movably installed inside the melting furnace. A discharge cylinder is fixed between the melting furnace and the box body. The rotating seat has a discharge hole and an installation hole respectively. A filter plate is fixed inside the discharge hole, and the installation hole is movably installed on the rotating column.

10. The nucleating agent addition and sintering process for preparing microcrystalline glass from dolomite tailings according to claim 4, characterized in that: Inside the fixed cylinder, a partition plate and a limiting plate are fixed respectively. An output shaft is fixed between the partition plate and the limiting plate. A gear is fixed to one end of the output shaft and is movably mounted on the side of the gear ring. A toggle plate is fixed to the other end of the output shaft and is movably mounted on the top of the partition plate.

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