A tellurium ingot casting device

Abstract

This utility model relates to the field of tellurium ingot casting technology, and specifically discloses a tellurium ingot casting device, including a furnace, a chute, a casting sump, and a casting machine platform. The furnace includes a crucible, a cover plate, insulating bricks, a heating device, a thermocouple, a first outer shell, a support, a rotating shaft, a connecting shaft, a leak detection port, and a pressure cap. The furnace is mounted on the support and connected by the rotating shaft. The cover plate is connected to the first outer shell through the connecting shaft. The first outer shell is made of stainless steel. The leak detection port is located on the side of the furnace near the chute. The crucible is made of silicon carbide graphite and is fixed to the first outer shell by the pressure cap. The insulating bricks and the heating device are located between the crucible and the first outer shell. This utility model adopts a two-stage zoned temperature-controlled melting and impurity removal method from bottom to top. Impurities easily float to the surface and solidify, resulting in good stratification with the molten tellurium. The impurity removal effect is good, the operation is simple, and the tellurium yield is high. The entire operation process is controlled by PLC, with a high degree of automation, avoiding frequent contact between operators and the high-temperature molten material, and creating a friendly working environment.

Description

Technical Field

[0001] This utility model relates to the field of tellurium ingot casting technology, and in particular to a tellurium ingot casting device. Background Technology

[0002] Tellurium is hailed as a "bridge that creates miracles" and is widely used in aerospace, nuclear energy, and electronics industries. It has become a supporting material for new materials needed in electronic computers, communications and aerospace development, medicine and health, and energy.

[0003] For example, Chinese patents disclose an electrically heated tilting continuous casting device for refined tellurium (publication number: CN110586880A), which includes a stirring shaft driven by a reducer motor. Another example is a method for preparing 4N tellurium (publication number: CN109319744A), which involves stirring preheated graphite rods with heated molten tellurium metal, then adding a slagging agent to combine with most of the impurities in the molten tellurium to form slag. These patents use mechanical or manual stirring to remove impurities, causing them to float to the surface before being poured off or manually scooped away. However, these methods have the following problems:

[0004] 1. Poor impurity removal effect;

[0005] 2. High heat radiation, poor working environment for employees;

[0006] 3. The large amount of casting fumes can easily lead to significant loss of tellurium in the fumes, resulting in tellurium loss.

[0007] 4. The mixing device is prone to material sticking, resulting in tellurium loss. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a tellurium ingot casting device, which solves the technical problems of existing technologies that use mechanical or manual stirring to remove impurities, causing impurities to float to the surface and then being poured out or scooped out manually. However, these methods suffer from poor impurity removal, high heat radiation leading to a poor working environment for employees, large amounts of casting fumes that easily cause significant tellurium loss in the fumes, and the tendency for the stirring device to adhere to materials, resulting in tellurium loss.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A tellurium ingot casting apparatus includes a furnace, a chute, a casting sump, and a casting machine platform. The furnace includes a crucible, a cover plate, insulating bricks, a heating device, a thermocouple, a first outer shell, a support, a rotating shaft, a connecting shaft, a leak detection port, and a pressure cap. The furnace is mounted on the support and connected via the rotating shaft. The cover plate is connected to the first outer shell via the connecting shaft. The first outer shell is made of stainless steel. The leak detection port is located on the side of the furnace near the chute. The crucible is made of silicon carbide graphite and is fixed to the first outer shell via the pressure cap.

[0011] The insulating bricks and heating device are arranged between the crucible and the first outer shell, and the rotating shaft is fixedly installed on both sides of the first outer shell, and the furnace is tilted by hydraulic drive.

[0012] Preferably, the chute is located in front of the furnace, and the chute includes a first heating belt and a first heat insulation layer.

[0013] Preferably, the casting sluice is located below the chute, a second outer shell is installed on the casting sluice, a second heating belt and a second heat insulation layer are wound between the casting sluice and the second outer shell, and a movable cover plate is provided on the upper part.

[0014] Preferably, the casting machine platform is located in front of the casting sump, and the casting machine platform includes a drive motor, guide wheels, guide rails, a mold platform, and a limiter; the drive motor and the guide wheels are connected by a synchronous belt, the guide wheels are installed in the guide rails, the guide rails are installed on the mold platform, and the limiter is installed on the guide rails.

[0015] Preferably, the furnace, chute, and casting sump are equipped with thermocouples for temperature measurement.

[0016] Preferably, the furnace, chute, and casting sump are made of silicon carbide graphite.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Compared with traditional stirring and impurity removal, this utility model adopts a two-stage zoned temperature-controlled melting and impurity removal method from bottom to top. Impurities are easy to float to the surface and solidify, resulting in a good stratification effect with the tellurium melt. The impurity removal effect is good, the operation is simple, and the tellurium recovery rate is high. The entire operation process is controlled by PLC, which has a high degree of automation and avoids frequent contact between operators and high-temperature melt, making the working environment friendly. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a front view of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model in use.

[0022] Legend: 1. Furnace; 101. Crucible; 102. Cover plate; 103. Insulating brick; 104. Heating device; 105. Thermocouple; 106. First outer shell; 107. Support; 108. Rotating shaft; 109. Connecting shaft; 110. Leak detection port; 111. Pressure cap; 2. Chute; 201. First heating band; 202. First insulation layer; 3. Casting sump; 301. Second outer shell; 302. Second heating band; 303. Second insulation layer; 4. Casting machine platform; 401. Drive motor; 402. Guide wheel; 403. Guide rail; 404. Mold platform; 405. Limiter. Detailed Implementation

[0023] This application provides a tellurium ingot casting device that effectively solves the problems of existing technologies that use mechanical or manual stirring to remove impurities, which result in poor impurity removal, high heat radiation leading to a poor working environment for employees, large amounts of casting fumes causing significant tellurium loss, and the tendency for materials to adhere to the stirring device, further contributing to tellurium loss. This invention, compared to traditional stirring and impurity removal methods, employs a two-stage, temperature-controlled melting and impurity removal process from bottom to top. Impurities easily float to the surface and solidify, resulting in excellent stratification with the molten tellurium. The device offers superior impurity removal, simple operation, and high tellurium recovery. The entire process is controlled by PLC, ensuring a high degree of automation and avoiding frequent contact between operators and the high-temperature molten material, thus creating a more environmentally friendly working environment. Example

[0024] like Figure 1 and Figure 2As shown, the technical solution in this application embodiment effectively solves the problems of existing technologies that use mechanical or manual stirring to remove impurities, causing impurities to float to the surface and then being poured out or manually scooped away. However, these methods suffer from poor impurity removal; high heat radiation, resulting in a poor working environment for employees; large amounts of casting fumes, which easily lead to significant tellurium loss in the fumes; and the stirring device easily adhering to materials, causing tellurium loss. The overall concept is as follows: A tellurium ingot casting device includes a furnace 1, a chute 2, a casting trough 3, and a casting machine platform 4. The furnace 1 includes a crucible 101, a cover plate 102, insulating bricks 103, and a heating element. The furnace 1 consists of a heating device 104, a thermocouple 105, a first outer shell 106, a bracket 107, a rotating shaft 108, a connecting shaft 109, a leak detection port 110, and a pressure cap 111. The furnace 1 is mounted on the bracket 107 and connected via the rotating shaft 108. The cover plate 102 is connected to the first outer shell 106 via the connecting shaft 109. The first outer shell 106 is made of stainless steel. The leak detection port 110 is located on the side of the furnace 1 near the chute 2. The crucible 101 is made of silicon carbide graphite and is fixed to the first outer shell 106 via the pressure cap 111. Insulating bricks 103 and a heating device 104 are installed in the crucible 101. Between the furnace 1 and the first outer shell 106, a rotating shaft 108 is fixedly installed on both sides of the first outer shell 106, and the furnace 1 is tilted by hydraulic drive. The chute 2 is located in front of the furnace 1. The chute 2 includes a first heating belt 201 and a first heat insulation layer 202. The casting sluice 3 is located below the chute 2. A second outer shell 301 is installed on the casting sluice 3. A second heating belt 302 and a second heat insulation layer 303 are wound between the casting sluice 3 and the second outer shell 301. A movable cover plate is provided on the upper part. The casting machine platform 4 is located in front of the casting sluice 3. The casting machine platform 4 includes a drive motor 401, guide wheels 402, guide rails 403, and a mold. The system includes a platform 404 and a limiter 405; a drive motor 401 is connected to a guide wheel 402 via a synchronous belt, the guide wheel 402 is mounted in a guide rail 403, the guide rail 403 is mounted on the mold platform 404, and the limiter 405 is mounted on the guide rail 403. Temperature regulation PLC control components are also provided on the furnace 1, chute 2, casting sump 3, and casting machine platform 4. Temperature measuring thermocouples are provided in the furnace 1, chute 2, and casting sump 3. The furnace 1 contains temperature monitoring of the furnace and the tellurium melt, realizing precise control of the tellurium melt temperature. The furnace 1, chute 2, and casting sump 3 are made of silicon carbide graphite material.

[0025] To address the problems existing in the prior art, this utility model provides a tellurium ingot casting device. Compared with the traditional stirring and impurity removal method, this utility model adopts a two-stage zoned temperature-controlled melting and impurity removal method from bottom to top. Impurities are easily floated to the surface and solidify, resulting in a better stratification effect with the molten tellurium. The impurity removal effect is good, the operation is simple, and the tellurium recovery rate is high. The entire operation process is controlled by PLC, with a high degree of automation, avoiding frequent contact between operators and high-temperature melt, and creating a friendly working environment.

[0026] Working principle:

[0027] First, the heating device 104 in furnace 1, the first heating band 201 in chute 2, and the second heating band 302 in casting jar 3 are turned on to heat furnace 1, chute 2, and casting jar 3 to the specified temperature requirements. During casting, the cover plate 102 of furnace 1 is first put on, the movable cover plate of chute 2 is opened, and the movable cover plate of casting jar 3 is opened. Then, the tellurium liquid is poured into chute 2 by rotating shaft 108. At this time, the tellurium liquid flows by gravity from chute 2 to casting jar 3. After the liquid level in casting jar 3 reaches the specified level, the furnace 1 is stopped from casting by rotating shaft 108. Then, the casting jar 3 is tilted back and forth by PLC servo motor to pour the tellurium liquid onto the tellurium ingot mold on mold platform 404 above casting machine platform 4. The casting machine platform 4 is remotely controlled to move the mold laterally. The mold is precisely positioned by limiter 405 for continuous casting.

[0028] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A tellurium ingot casting apparatus, comprising a furnace (1), a chute (2), a casting sump (3), and a casting machine platform (4), characterized in that, The furnace (1) includes a crucible (101), a cover plate (102), insulating bricks (103), a heating device (104), a thermocouple (105), a first outer shell (106), a bracket (107), a rotating shaft (108), a connecting shaft (109), a leak detection port (110), and a pressure cap (111). The furnace (1) is mounted on the bracket (107) and connected by the rotating shaft (108). The cover plate (102) is connected to the first outer shell (106) by the connecting shaft (109). The first outer shell (106) is made of stainless steel. The leak detection port (110) is located on the side of the furnace (1) near the chute (2). The crucible (101) is made of silicon carbide graphite and is fixed to the first outer shell (106) by the pressure cap (111). The heat-insulating brick (103) and the heating device (104) are arranged between the crucible (101) and the first outer shell (106). The rotating shaft (108) is fixedly installed on both sides of the first outer shell (106) and the furnace (1) is tilted by hydraulic drive.

2. The tellurium ingot casting apparatus as described in claim 1, characterized in that, The chute (2) is located in front of the furnace (1), and the chute (2) includes a first heating belt (201) and a first heat insulation layer (202).

3. The tellurium ingot casting apparatus as described in claim 1, characterized in that, The casting sump (3) is located below the chute (2). A second outer shell (301) is installed on the casting sump (3). A second heating belt (302) and a second heat insulation layer (303) are wrapped between the casting sump (3) and the second outer shell (301). A movable cover plate is provided on the upper part.

4. The tellurium ingot casting apparatus as described in claim 1, characterized in that, The casting machine platform (4) is located in front of the casting sump (3). The casting machine platform (4) includes a drive motor (401), a guide wheel (402), a guide rail (403), a mold platform (404), and a limiter (405). The drive motor (401) and the guide wheel (402) are connected by a synchronous belt. The guide wheel (402) is installed in the guide rail (403). The guide rail (403) is installed on the mold platform (404). The limiter (405) is installed on the guide rail (403).

5. The tellurium ingot casting apparatus as described in claim 1, characterized in that, The furnace (1), chute (2) and casting sump (3) are equipped with thermocouples for temperature measurement.

6. The tellurium ingot casting apparatus as described in claim 1, characterized in that, The furnace (1), chute (2) and casting sump (3) are made of silicon carbide graphite.

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