Equipment for treating gallium arsenide waste

Abstract

The equipment comprises a decomposing furnace, a connecting rod, a supporting plate and an air inlet pipe, a discharging opening is formed in the right end of the decomposing furnace, a furnace cover is detachably installed at the left end of the decomposing furnace, the connecting rod is fixedly connected to the center of the right side wall of the furnace cover, and the right end of the connecting rod is fixedly connected with the center of the left side wall of the supporting plate; a plurality of scrapers are fixedly connected to the edge of the outer side wall of the supporting plate in a circumferential array distribution mode, a plurality of striker plates are arranged on the inner side wall of the decomposing furnace in a circumferential array distribution mode, the striker plates are located between every two adjacent scrapers and attached to the scrapers, and an air inlet is formed in the position, close to the left side, of the outer side wall of the decomposing furnace; the scraping plate is arranged to scrape the striker plate, so that residual waste on the surface of the striker plate is scraped off, and the recovery efficiency is improved while the cleanness in the furnace is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of gallium arsenide waste treatment, and in particular to a device for treating gallium arsenide waste. Background Art

[0002] Gallium arsenide waste is generated during the preparation and use of gallium arsenide. It usually appears as a black-gray solid with a melting point of about 1238°C. It can exist stably in the air below 600°C and is not corroded by non-oxidizing acids. Gallium arsenide waste is a valuable resource. Through reasonable recycling and treatment, it can not only reduce environmental pollution, but also achieve resource reuse and bring economic benefits. At this stage, vacuum heating is usually used to decompose gallium arsenide.

[0003] Patent No. CN 219218112 U discloses a device for treating gallium arsenide waste, including a condensation box, a scraping device, a material baffle and a flat shovel, etc. The decomposition furnace can rotate, and it has a material baffle inside, which plays a role of stirring the material during the rotation process. Even if more gallium arsenide waste is added, the reaction can be more sufficient, which is also conducive to improving the reaction rate. The condensation wheel rotates relatively, and the scraping device arranged on the side facing away from the decomposition furnace outlet can timely scrape away the arsenic that has just condensed and attached to the surface of the condensation wheel in each rotation, solving the problem that the condensed arsenic is difficult to clean and the cleaning is not thorough.

[0004] However, in use, there are the following defects:

[0005] Although the baffle plate is used to stir the waste in the decomposition furnace to make the reaction more complete, due to the full contact between the baffle plate and the waste, the decomposed arsenic and gallium will stick to the baffle plate during the reaction, which not only affects the recovery efficiency but also makes cleaning more difficult. Utility Model Content

[0006] The purpose of the present application is to provide a device for treating gallium arsenide waste, which solves the problem proposed in the background technology that although the baffle plate is used to stir the waste in the decomposition furnace to make the reaction more complete, due to the full contact between the baffle plate and the waste, the decomposed arsenic and gallium will stick to the baffle plate during the reaction, which not only affects the recovery efficiency but also makes cleaning more difficult.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an apparatus for treating gallium arsenide waste, comprising a decomposition furnace, a connecting rod, a support plate and an air inlet pipe, wherein a discharge port is provided at the right end of the decomposition furnace, a furnace cover is detachably installed at the left end of the decomposition furnace, a connecting rod is fixedly connected to the center of the right side wall of the furnace cover, the right end of the connecting rod is fixedly connected to the center of the left side wall of the support plate, a plurality of scrapers are fixedly connected to the edge of the outer wall of the support plate in a circular array, a plurality of baffle plates are provided on the inner side wall of the decomposition furnace in a circular array, and the baffle plates are located between two adjacent scrapers and fit with the scrapers, an air inlet is provided on the outer side wall of the decomposition furnace to the left, and a valve is fixedly installed at the outer opening of the air inlet, one end of the air inlet pipe is fixedly connected and communicated with an inert gas box, and the other end of the air inlet pipe is movably connected and communicated with the valve.

[0008] In this technical solution, the heating furnace heats the decomposition furnace, and the driving device drives the decomposition furnace to rotate after being started, so that the waste is subjected to rotational heating treatment. The gaseous arsenic can be assisted to be discharged through the inert gas box, the air inlet pipe, the valve and the air inlet. In order to prevent the gaseous arsenic from staying in the furnace and cooling and adhering to the inner wall of the furnace, the air inlet pipe is connected to the valve, and the valve is opened, and the gas in the inert gas box will rush into the decomposition furnace, thereby discharging the gaseous arsenic in the decomposition furnace from the discharge port and entering the next process, which improves the collection efficiency and reduces the difficulty of cleaning in the decomposition furnace. At the same time, the baffle plate can be cleaned by the connecting rod, the support plate and the scraper. After the furnace cover is removed, it is pulled to the left to move the support plate and the scraper to the left. Since the scraper fits the baffle plate and the inner wall of the decomposition furnace, the waste remaining on the surface will be scraped off during the movement, and finally brought to the collecting trough, which is convenient for subsequent collection, and convenient for cleaning in the furnace while improving the recycling efficiency.

[0009] As an optional solution of the technical solution of the present application, a collection trough is provided on the left side of the outer wall of the decomposition furnace, and a discharge port is provided at the bottom of the collection trough.

[0010] As an optional solution of the technical solution of the present application, a plurality of vents are evenly provided on the surface of the support plate.

[0011] As an optional solution of the technical solution of the present application, the outer wall of the scraper is in contact with the inner wall of the decomposition furnace.

[0012] As an optional solution of the technical solution of the present application, the air inlet is located outside the heating furnace, and the air inlet is in a closed state when not in use, and is not blocked by the heating furnace during the rotational heating process.

[0013] As an optional solution of the technical solution of the present application, driving devices are fixedly installed on both sides of the bottom of the decomposition furnace, and the top of the driving device is in contact with the decomposition furnace.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] 1. The present application can assist in the discharge of gaseous arsenic through an inert gas box, an air inlet pipe, a valve and an air inlet. In order to prevent the gaseous arsenic from staying in the furnace and cooling down and adhering to the inner wall of the furnace, the air inlet pipe is connected to the valve and the valve is opened. The gas in the inert gas box will rush into the decomposition furnace, thereby discharging the gaseous arsenic in the decomposition furnace from the exhaust port and entering the next process, thereby improving the collection efficiency and reducing the difficulty of cleaning the decomposition furnace.

[0016] 2. The baffle plate can be cleaned by connecting rods, support plates and scrapers. After removing the furnace cover, pull it to the left to move the support plate and scraper to the left. Since the scraper fits the baffle plate and the inner wall of the decomposition furnace, the waste remaining on the surface will be scraped off during the movement, and finally brought to the aggregate trough for subsequent collection, which facilitates the cleaning of the furnace and improves the recycling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 An overall view of an apparatus for treating gallium arsenide waste for the present application;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of a decomposition furnace of a device for treating gallium arsenide waste in the present application.

[0020] In the figure: 1. decomposition furnace; 2. heating furnace; 3. driving device; 4. furnace cover; 5. discharge port; 6. connecting rod; 7. support plate; 8. scraper; 9. material baffle plate; 10. vent; 11. collecting trough; 12. discharge port; 13. air inlet; 14. air inlet pipe; 15. valve; 16. inert gas box. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, they are further explained below in conjunction with specific implementation methods.

[0022] like Figure 1The device for treating gallium arsenide waste comprises a decomposition furnace 1, a connecting rod 6, a support plate 7 and an air inlet pipe 14. The decomposition furnace 1 is located on the outside of the heating furnace 2. Drive devices 3 are fixedly installed on both sides of the bottom of the decomposition furnace 1. The top of the drive device 3 is in contact with the decomposition furnace 1. When heating, the drive device 3 starts and rotates the decomposition furnace 1. The specific structure of the drive device 3 does not belong to the technical solution claimed for protection in this application, so it will not be described in detail.

[0023] like Figure 2 As shown, a discharge port 5 is provided at the right end of the decomposition furnace 1, and a furnace cover 4 is detachably installed at the left end of the decomposition furnace 1. A connecting rod 6 is fixedly connected to the center of the right side wall of the furnace cover 4, and the right end of the connecting rod 6 is fixedly connected to the center of the left side wall of the support plate 7. A plurality of vents 10 are evenly provided on the surface of the support plate 7 to facilitate the normal passage of gas. A plurality of scrapers 8 are fixedly connected to the edge of the outer wall of the support plate 7 in a circular array. A plurality of baffle plates 9 are provided on the inner side wall of the decomposition furnace 1 in a circular array, and the baffle plates 9 are located between two adjacent scrapers 8 and fit with the scrapers 8. The outer side wall of the scraper plates 8 fits with the inner side wall of the decomposition furnace 1, so that the inner wall of the furnace is also scraped clean during the scraping process. When the scraper plates 8 move, the surface of the baffle plates 9 will be scraped clean, so that the waste remaining on the surface will be scraped off.

[0024] like Figure 1 As shown, an air inlet 13 is provided on the left side of the outer wall of the decomposition furnace 1, and the air inlet 13 is located on the outer side of the heating furnace 2, and the air inlet 13 is in a closed state when not in use, and a valve 15 is fixedly installed at the outer opening of the air inlet 13, one end of the air inlet pipe 14 is fixedly connected and communicated with the inert gas box 16, and the other end of the air inlet pipe 14 is movably connected and communicated with the valve 15. After the heating is completed, the decomposition furnace 1 stops, and then the air inlet pipe 14 is connected to the valve 15, so as to allow the inert gas to rush into the vacuum decomposition furnace 1, thereby taking out the gaseous arsenic in the furnace, and preventing it from staying in the furnace and adhering to the inner surface of the skull while waiting to cool down.

[0025] like Figure 2 As shown, a collection trough 11 is provided on the left side of the outer wall of the decomposition furnace 1, and a discharge port 12 is provided at the bottom of the collection trough 11. When the scraper 8 moves to the collection trough 11, the waste will be scraped into the collection trough 11, so as to facilitate collection.

[0026] In actual use, the heating furnace 2 heats the decomposition furnace 1, and the driving device 3 is started to drive the decomposition furnace 1 to rotate, so that the waste is subjected to rotational heating treatment. In order to prevent gaseous arsenic from staying in the furnace and cooling and adhering to the inner wall of the furnace, the air inlet pipe 14 is connected to the valve 15, and the valve 15 is opened, and the gas in the inert gas box 16 will rush into the decomposition furnace 1, so that the gaseous arsenic in the decomposition furnace 1 is discharged from the discharge port 5 and enters the next process, which improves the collection efficiency and reduces the difficulty of cleaning in the decomposition furnace 1. After the furnace cover 4 is removed, it is pulled to the left to move the support plate 7 and the scraper 8 to the left. Since the scraper 8 is in contact with the baffle plate 9 and the inner wall of the decomposition furnace 1, the waste remaining on the surface will be scraped off during the movement, and finally brought to the collecting trough 11, which is convenient for subsequent collection, which is convenient for cleaning in the furnace and improves the recovery efficiency. It should be noted that after the gaseous arsenic is discharged along the discharge port 5, it enters the subsequent condensation step for collection. This step is not a technical solution to be protected by the utility model and will not be described in detail here.

Claims

1. An apparatus for treating gallium arsenide waste, comprising a decomposition furnace (1), a connecting rod (6), a support plate (7) and an air inlet pipe (14), characterized in that: The right end of the decomposition furnace (1) is provided with a discharge port (5), the left end of the decomposition furnace (1) is detachably provided with a furnace cover (4), the center of the right side wall of the furnace cover (4) is fixedly connected with a connecting rod (6), the right end of the connecting rod (6) is fixedly connected with the center of the left side wall of the support plate (7), the outer side wall edge of the support plate (7) is fixedly connected with a plurality of scrapers (8) distributed in a circular array, the inner side wall of the decomposition furnace (1) is provided with a plurality of baffle plates (9) distributed in a circular array, and the baffle plates (9) are located between two adjacent scrapers (8) and are in contact with the scrapers (8), the outer side wall of the decomposition furnace (1) is provided with an air inlet (13) on the left side, and a valve (15) is fixedly installed at the outer opening of the air inlet (13), one end of the air inlet pipe (14) is fixedly connected and communicated with the inert gas box (16), and the other end of the air inlet pipe (14) is movably connected and communicated with the valve (15).

2. The device for treating gallium arsenide waste according to claim 1, characterized in that: A material collecting trough (11) is provided on the left side of the outer wall of the decomposition furnace (1), and a material discharge port (12) is provided at the bottom of the material collecting trough (11).

3. The device for treating gallium arsenide waste according to claim 1, characterized in that: A plurality of vents (10) are evenly arranged on the surface of the support plate (7).

4. The device for treating gallium arsenide waste according to claim 1, characterized in that: The outer wall of the scraper (8) is in contact with the inner wall of the decomposition furnace (1).

5. The device for treating gallium arsenide waste according to claim 1, characterized in that: The air inlet (13) is located outside the heating furnace (2).

6. The device for treating gallium arsenide waste according to claim 1, characterized in that: Driving devices (3) are fixedly mounted on both sides of the bottom of the decomposition furnace (1), and the top end of the driving device (3) is in contact with the decomposition furnace (1).

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