Antimony-selenium alloy production equipment with automatic temperature control function and production method

Abstract

The invention belongs to the field of antimony-selenium alloy production, and particularly relates to antimony-selenium alloy production equipment with an automatic temperature control function and a production method.The antimony-selenium alloy production equipment comprises an induction melting furnace, a heating crucible capable of being overturned is arranged in the induction melting furnace, and an induction coil is arranged on the outer side of the heating crucible. The efficient selenium-antimony alloy production and preparation function is achieved, meanwhile, a temporary adding groove is formed in antimony liquid through the airflow effect, selenium metal is heated in a wrapping mode through the antimony liquid, the process that the selenium metal is fully mixed with the antimony liquid is guaranteed, meanwhile, gasification of the selenium metal at the high temperature is greatly reduced, and the production efficiency of the selenium-antimony alloy is improved. The problems that the selenium metal escapes and does not react, and toxic selenium gas is filled in equipment and is difficult to treat are solved, and the direct loss of expensive selenium raw materials is also reduced; meanwhile, the method is simple and easy to operate, the selenium locking capacity is excellent, and no additional additive is generated.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of antimony-selenium alloy production, in particular to an antimony-selenium alloy production equipment with automatic temperature control and a production method. BACKGROUND

[0002] Antimony-selenium alloy generally refers to a compound or material formed by melting metal antimony and semiconductor selenium in a specific ratio. Its typical representative is diantimony triselenide, which has unique semiconductor and phase change characteristics. The common production method is high-temperature melting method: sealing elemental antimony and elemental selenium in a vacuum environment, and reacting with each other at high temperature.

[0003] In the traditional antimony-selenium alloy production process, the core challenge is how to make the melting point of antimony metal and selenium metal, which differ greatly, fuse with each other. The melting point of selenium metal is only 221 degrees Celsius, much lower than that of antimony metal. If selenium and antimony metal are directly placed in a crucible for uniform heating, the selenium metal will melt and vaporize in advance, and will disperse in the equipment before fusing with antimony, not only causing loss of selenium metal, but also toxic selenium gas is difficult to handle later. In the traditional production process, the isolation method is often used, which uses a quartz tube to wrap the selenium metal and seals the raw materials in a vacuum quartz tube, so that the selenium vapor has no place to escape in a closed high-pressure environment, and finally all condenses and participates in the reaction. However, this method is often used for laboratory preparation of small amounts of alloy and is difficult to mass-produce. In the method of melting antimony first and then adding selenium, it is necessary to ensure that the selenium metal sinks into the antimony liquid, otherwise the problem of rapid vaporization of the upper selenium metal during heating will still occur, which will cause the feeding equipment to directly touch the antimony liquid. Not only does it need to ensure that the feeding equipment is resistant to high temperature, but also the antimony metal is easy to stick and crystallize on the feeding equipment, and part of the antimony crystals crystallized in advance due to the touch of the feeding equipment will affect the fusion with selenium and reduce the quality of the finished product.

[0004] Therefore, the application provides an antimony-selenium alloy production equipment with automatic temperature control and a production method. SUMMARY

[0005] In order to make up for the shortcomings of the prior art and solve at least one technical problem raised in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the antimony-selenium alloy production equipment with automatic temperature control comprises an induction melting furnace, a heating crucible capable of overturning is arranged in the induction melting furnace, an induction coil is arranged on the outside of the heating crucible, the two ends of the induction coil pass through the induction melting furnace and are connected with a control power station, a material taking seat and a control plate are fixedly connected to the front end of the induction melting furnace, a gate is arranged on the front end of the material taking seat, a forming die capable of sliding horizontally is arranged in the material taking seat, a feeding pipe is arranged above the heating crucible, a bottom jet opening for jetting gas flow is formed in the bottom of the feeding pipe; Through such a design, not only the efficient production and preparation function of selenium-antimony alloy is realized, but also a temporary adding groove is formed in the antimony liquid through the action of the gas flow, the selenium metal is wrapped and heated by the antimony liquid itself, which not only ensures that the selenium metal is fully mixed with the antimony liquid, but also greatly reduces the gasification of the selenium metal at high temperature, so that the selenium metal does not escape and does not react, and the problem of toxic selenium gas filling in the equipment and being difficult to handle is also reduced, and the direct loss of expensive selenium raw materials is also reduced; at the same time, such a method is simple and easy to operate, and has excellent selenium locking capacity, and does not produce additional additives, and under the action of the gas flow, the low-temperature feeding pipe is not used for direct contact with the high-temperature antimony liquid, which reduces the adhesion of the antimony liquid to the feeding pipe, causes the loss of the antimony liquid, and causes the alloy ratio error problem, and also reduces the post-processing step of cleaning the feeding pipe.

[0007] Preferably, an isolation box is fixedly connected to the top of the induction melting furnace, a communication hole for the feeding pipe to pass through is formed between the isolation box and the induction melting furnace, a vertical elevator is installed in the inside of the isolation box, an adjusting seat is fixedly connected to the top of the feeding pipe, and the lifting end of the elevator is fixedly connected with the adjusting seat; in the heating process, the feeding pipe is located in the isolation box and does not participate in the heating process; when feeding is needed, the adjusting seat is controlled to sink by the elevator, so that the end of the feeding pipe extends into the heating crucible, and the gas flow is started to spray outward, thereby realizing the effect of placing the selenium metal at the bottom of the antimony liquid.

[0008] Preferably, a gas flow pump is fixedly connected to the top of the isolation box, a spiral transmission pipe is fixedly connected between the gas flow pump and the adjusting seat, a raw material box for storing selenium materials is fixedly connected to the outside of the induction melting furnace, and the raw material box is connected with the adjusting seat; the gas flow pump transmits the protective gas and sprays it out from the bottom of the feeding pipe; the spiral transmission pipe is adapted to the lifting process of the adjusting seat, the raw material box appropriately transfers the selenium metal to the adjusting seat, and finally discharges it from the bottom of the feeding pipe.

[0009] Preferably, the bottom of the feeding pipe is provided with a feeding port, the top of the adjusting seat is provided with a feeder on one side, the selenium material is in the form of a thin line, and the selenium material is in a double-layer structure, the center of which is a selenium line, and the selenium line is wrapped with an antimony layer, the double-layer line structure of the selenium material not only facilitates the feeding process of the feeding pipe, but also facilitates the winding storage of the line-shaped selenium material in the raw material box, the selenium material is extruded and fed by the feeder, and the selenium material is continuously discharged from the bottom of the feeding pipe; the feeder can be an electric roller that clamps the selenium material; meanwhile, the antimony layer wrapped around the selenium line will not be quickly melted due to the high melting point, and the selenium line will be exposed only after the feeding is completed, at which time the antimony liquid has already wrapped the selenium line, so that the selenium liquid cannot spread outward, thereby ensuring that the selenium material cannot overflow outward and can be fully mixed with the antimony liquid, and the feeding pipe is provided with a cutting assembly for cutting the selenium line to ensure the separation of the raw materials.

[0010] Preferably, a plurality of nozzles are arranged on the outside of the feeding pipe, and the bottom of the feeding pipe is provided with an annular bottom nozzle, the nozzles are arranged in a wide-top-narrow-bottom shape, as the feeding pipe sinks, the bottom nozzle is difficult to ensure that the liquid level expands to both sides, and the nozzles on the side can spray air flow to both sides of the feeding pipe, and the wide-top-narrow-bottom nozzles gradually increase the side spraying force as the feeding pipe sinks, thereby ensuring that the liquid level does not always contact the feeding pipe; the built-in scale of the heating crucible, and the raw materials in the heating crucible cannot be too much to ensure that the liquid level does not overflow the heating crucible under the action of the air flow.

[0011] Preferably, the bottom of the heating crucible is fixedly connected with an adding table, the adding table is arranged in a wide-top-narrow-bottom shape, and a gap is formed between the top edge of the adding table and the inner wall of the heating crucible, as the feeding pipe sinks, the air flow will directly act on the top surface of the adding table, thereby blowing away the liquid level on the adding table, at which time the selenium material can be continuously placed on the adding table and temporarily not in contact with the high-temperature antimony liquid, and when the feeding is completed, the antimony liquid will wrap the selenium material to complete the melting and mixing work, the expanding shape of the top surface of the adding table can facilitate the displacement of the antimony liquid and the placement of the selenium material, and will not affect the pouring of the finished product.

[0012] Preferably, the bottom of the heating crucible is fixedly connected with a support seat, a rotating plate is fixedly connected between the support seat and the end of the induction coil, the rotating plate is arranged in a semicircular shape, the center of the rotating plate is fixedly connected with a transmission shaft, the transmission shaft is rotationally connected with the induction melting furnace, the end of the transmission shaft is electrically connected with a control station, the outside of the control station is fixedly connected with a driving motor, and the output end of the driving motor and the transmission shaft are transmissionally connected through a gear set, the driving motor controls the rotation of the transmission shaft and the rotating plate through the gear set, thereby driving the whole induction coil and the heating crucible to overturn and pour out the alloy liquid, the two ends of the induction coil are located in the transmission shaft and are electrically connected with the control station, thereby completing the rotation and power supply work, and the rotating plate also separates the inside and the outside to reduce heat leakage.

[0013] Preferably, the bottom of the material taking seat is fixedly connected with a bottom sliding plate, the top of the bottom sliding plate is slidably connected with a pulling seat, the front end of the pulling seat is fixedly connected with a pull ring, and the top of the pulling seat is connected with the bottom of the forming die.

[0014] The application discloses a production method of antimony-selenium alloy with automatic temperature control. S1: a required amount of antimony metal is placed in a heating crucible, then the inside of a raw material box is pumped to a vacuum state to completely remove air and moisture, then the inside is filled with a protective gas, current is input into an induction coil through a control electric station, the antimony metal in the heating crucible is heated to 700-750 DEG C, and the antimony metal is fully melted; S2: the feeding pipe is controlled to move to the bottom, and when the feeding pipe moves into the heating crucible, a gas flow is sprayed downward, the gas flow separates the molten antimony liquid outward, the bottom of the feeding pipe quickly feeds a proper amount of selenium metal into the antimony liquid, the gas flow spraying is closed before the selenium is melted, and the feeding pipe is lifted to the original position; S3: when the selenium metal is fed, the temperature of the heating crucible is adjusted to be maintained at 700 DEG C, the internal temperature is basically maintained between 650 DEG C and 700 DEG C with the addition of the selenium, the selenium and the antimony are fully mixed in the heating crucible under electromagnetic stirring to form the required antimony-selenium alloy, after the mixing is completed, the heating crucible is controlled to be turned over, the liquid alloy is poured into a matched forming die, and when cooling is completed, the forming die is removed through the opened gate to obtain the required antimony-selenium alloy.

[0015] The specific steps that the gas flow separates the antimony liquid in S2 are as follows: Q1: protective gas is transmitted through a gas flow pump, a spiral transmission pipe is used to adapt to the lifting process of the adjusting seat, and the gas is sprayed at the bottom of the feeding pipe; as the feeding pipe sinks, the gas flow is sprayed to the two sides of the feeding pipe in cooperation with side nozzles; Q2: the nozzle is wide at the top and narrow at the bottom, the side spraying force gradually increases along with the deepening of the feeding pipe, and it is ensured that the liquid surface does not contact the feeding pipe at all times.

[0016] The application has the following beneficial effects: 1. The antimony-selenium alloy production equipment and production method with automatic temperature control, which realizes efficient production of selenium-antimony alloy, forms a temporary adding groove in the antimony liquid through air flow, uses the antimony liquid to heat the selenium metal in a wrapping mode, ensures that the selenium metal is fully mixed with the antimony liquid, greatly reduces the problem that the selenium metal escapes due to gasification under high temperature and does not react, and makes it difficult to handle the problem that toxic selenium gas fills the equipment, reduces the direct loss of expensive selenium raw materials, and also reduces the post-processing step of cleaning the feeding pipe.

[0017] 2. The antimony-selenium alloy production equipment and production method with automatic temperature control, which has a double-layer linear structure of selenium material, facilitates the feeding process of the feeding pipe, stores the linear selenium material in the raw material box, and continuously discharges the selenium material from the bottom of the feeding pipe through the extrusion of the feeding machine; the feeding machine can be an electric roller that clamps the selenium material; meanwhile, the antimony layer wrapped by the selenium wire will not be quickly melted due to a high melting point, and the internal selenium wire will be exposed after the feeding is completed, at which time the antimony liquid has wrapped the selenium wire, so that it will not spread outward, thereby ensuring that the selenium material will not overflow outward and can be fully mixed with the antimony liquid. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below with reference to the drawings.

[0019] Figure 1 is a perspective view of the application; Figure 2 is an internal structure diagram of the induction melting furnace of the application; Figure 3 is a perspective view of the rotating plate and the control station of the application; Figure 4 is a perspective view of the rotating plate and the heating crucible of the application; Figure 5 is a perspective view of the raw material box and the isolation box of the application; Figure 6 is a perspective view of the feeding pipe and the induction coil of the application; Figure 7 is a perspective view of the feeding pipe of the application; Figure 8 is a method flowchart of the application; In the diagram: 1. Induction melting furnace; 2. Material feeding seat; 3. Gate; 4. Control plate; 5. Control radio; 6. Isolation box; 7. Raw material box; 8. Air pump; 9. Bottom slide plate; 10. Pull-out seat; 11. Molding mold; 12. Drive motor; 13. Rotating plate; 14. Induction coil; 15. Heating crucible; 16. Support seat; 17. Adding platform; 18. Lifter; 19. Selenium material; 20. Nozzle; 21. Feeding pipe; 22. Adjusting seat; 23. Feeder; 24. Transmission pipe; 25. Feed port; 26. Bottom nozzle. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 8 As shown in the figure, an antimony selenium alloy production equipment with automatic temperature control according to an embodiment of the present invention includes an induction melting furnace 1. The induction melting furnace 1 is provided with a heating crucible 15 that can be rotated inside. An induction coil 14 is provided on the outside of the heating crucible 15. Both ends of the induction coil 14 pass through the induction melting furnace 1 and are connected to a control radio station 5. A material taking seat 2 and a control plate 4 are fixedly connected to the front end of the induction melting furnace 1. A gate 3 is installed at the front end of the material taking seat 2. A forming mold 11 that can be translated and slid is provided in the material taking seat 2. A feeding pipe 21 is provided above the heating crucible 15. A bottom nozzle 26 for spraying airflow is opened at the bottom of the feeding pipe 21. Put the required amount of antimony metal in the heating crucible 15, then the raw material box 7 inside is extracted to a vacuum state, completely remove air and moisture, then fill the inside with protective gas, which can be argon; The back plate of the induction melting furnace 1 can be removed for the addition of antimony metal and the connection of negative pressure and protective gas equipment; Then pass current to the induction coil 14 through the control console 5, heat the antimony metal in the heating crucible 15 to 700-750 degrees Celsius, so that it is fully melted, then control the feeding pipe 21 to move to the bottom, and when it moves to the heating crucible 15, it sprays a gas flow downward, which will separate the molten antimony liquid outward. Since the antimony liquid is a metal liquid, it has a higher density, so even under the action of the gas flow, it will also produce sputtering, but it will produce a concave cavity in the center. At this time, the bottom of the feeding pipe 21 quickly drops a suitable amount of selenium metal into the antimony liquid, and the gas flow is turned off before the selenium is melted, and the feeding pipe 21 rises back to its original position. At this time, the surrounding antimony metal liquid will quickly cover and wrap the selenium metal, and make it quickly heat and melt. The control console 5 controls the heating temperature by adjusting the current. When the selenium is added, the temperature of the heating crucible 15 is adjusted to maintain at 700 degrees Celsius. With the addition of selenium, the internal temperature is basically maintained between 650 and 700 degrees Celsius. At the same time, due to the use of electromagnetic heating, electromagnetic stirring is generated. Because the induced eddy current itself is also a current, this current will be affected by the Lorentz force in the magnetic field. In the molten metal, the direction of this force will drive the liquid to circulate in a certain direction, forming electromagnetic stirring. Thus, it can ensure that the molten selenium and antimony are fully mixed in the heating crucible 15 to form the required antimony-selenium alloy. The temperature adjustment is all around the melting point of antimony metal, which is 631.1 degrees Celsius. After mixing is completed, control the heating crucible 15 to overturn and pour the liquid alloy into the suitable forming mold 11. The top side of the heating crucible 15 is provided with a pouring groove and a guide piece to assist the pouring process. When the cooling is completed, the gate 3 is opened to remove the forming mold 11 to obtain the required antimony-selenium alloy. Through this kind of setting, not only the efficient production and preparation function of selenium-antimony alloy is realized, but also a temporary adding groove is formed in the antimony liquid by the action of the gas flow. The selenium metal is wrapped and heated by the antimony liquid itself, which not only ensures the process of mixing selenium metal with antimony liquid, but also greatly reduces the problem of selenium metal escaping due to gasification at high temperature, resulting in no reaction and the problem of toxic selenium gas filling in the equipment being difficult to handle. It also reduces the direct loss of expensive selenium raw materials. At the same time, this method is simple and easy to operate, and has excellent selenium locking ability, and will not produce additional additives. At the same time, under the action of the gas flow, the low-temperature feeding pipe 21 is not used for direct contact with the high-temperature antimony liquid, reducing the problem of antimony liquid adhering and sticking to the feeding pipe 21, causing the loss of antimony liquid and causing the alloy ratio error problem. At the same time, it also reduces the post-processing step of cleaning the feeding pipe 21.

[0022] The top of the induction smelting furnace 1 is fixed with an isolation box 6, a communication hole for the feeding pipe 21 to pass through is arranged between the isolation box 6 and the induction smelting furnace 1, a vertical lifter 18 is arranged in the isolation box 6, the top of the feeding pipe 21 is fixed with an adjusting seat 22, and the lifting end of the lifter 18 is fixed with the adjusting seat 22. In operation, the feeding pipe 21 is located in the isolation box 6 during the heating process and does not participate in the heating process, when feeding is needed, the adjusting seat 22 is controlled to sink by the lifter 18, the end of the feeding pipe 21 is inserted into the heating crucible 15, and air flow is sprayed outward, so that the effect of placing selenium metal at the bottom of the antimony liquid is realized.

[0023] The top of the isolation box 6 is fixed with an air flow pump 8, a spiral transmission pipe 24 is arranged between the air flow pump 8 and the adjusting seat 22, the outside of the induction smelting furnace 1 is fixed with a raw material box 7 for storing selenium material 19, and the raw material box 7 is connected with the adjusting seat 22. In operation, the air flow pump 8 transmits the protective gas and sprays it from the bottom of the feeding pipe 21, the spiral transmission pipe 24 is adapted to the lifting process of the adjusting seat 22, the raw material box 7 appropriately transmits the selenium metal to the adjusting seat 22, and finally discharges from the bottom of the feeding pipe 21.

[0024] The bottom of the feeding pipe 21 is provided with a feeding port 25, the top of the adjusting seat 22 is provided with a feeder 23 on one side, the selenium material 19 is in the form of a thin line, and the selenium material 19 is in a double-layer structure, the center of which is a selenium wire, and the selenium wire is wrapped with an antimony layer. In operation, the double-layer line structure of the selenium material 19 not only facilitates the feeding process of the feeding pipe 21, but also facilitates the feeding process of the feeding pipe 21, the line-shaped selenium material 19 is wound and stored in the raw material box 7, and is extruded and fed by the feeder 23, so that the selenium material 19 is continuously discharged from the bottom of the feeding pipe 21; the feeder 23 can be an electric roller for clamping the selenium material 19; at the same time, the antimony layer wrapped around the selenium wire will not be quickly melted due to its high melting point, and the selenium wire inside will not be exposed until the feeding is completed, at which time the antimony liquid has wrapped the selenium wire, so that it will not spread outward, thereby ensuring that the selenium material 19 will not overflow outward and can be fully mixed with the antimony liquid. The feeding pipe 21 is provided with a cutting assembly for cutting the selenium wire to ensure the separation of the raw materials.

[0025] A plurality of nozzles 20 are arranged on the outside of the feeding pipe 21, and an annular bottom nozzle 26 is arranged at the bottom of the feeding pipe 21. When working, as the feeding pipe 21 sinks, the bottom spray port 26 at the bottom is difficult to ensure that the liquid surface expands to both sides. In combination with the side nozzle 20, air flow can be sprayed to both sides of the feeding pipe 21. The nozzle 20 is wide at the top and narrow at the bottom. As the feeding pipe 21 sinks, the side spraying force gradually increases, ensuring that the liquid surface does not contact the feeding pipe 21 at all times. The built-in scale of the heating crucible 15 ensures that the raw materials in the heating crucible 15 are not too much, so that the liquid surface does not overflow the heating crucible 15 under the action of air flow.

[0026] The bottom of the heating crucible 15 is fixedly connected with an addition table 17. The addition table 17 is arranged in a shape of being wide at the top and narrow at the bottom. There is a gap between the top edge of the addition table 17 and the inner wall of the heating crucible 15. When working, as the feeding pipe 21 sinks, the air flow will directly act on the top surface of the addition table 17, thereby blowing away the liquid surface on the addition table 17. At this time, the selenium material 19 can be continuously placed on the addition table 17 and temporarily not in contact with the high-temperature antimony liquid. When the feeding is completed, as the air flow is closed, the antimony liquid will wrap the selenium material 19, completing the melting and mixing work. The expansion shape of the top surface of the addition table 17 can facilitate the displacement of the antimony liquid and the placement of the selenium material 19, and also will not affect the pouring of the finished product.

[0027] The bottom of the heating crucible 15 is fixedly connected with a support seat 16. The support seat 16 and the end of the induction coil 14 are fixedly connected with a rotating plate 13. The rotating plate 13 is arranged in a semicircular shape. The center of the rotating plate 13 is fixedly connected with a transmission shaft. The transmission shaft is rotationally connected with the induction melting furnace 1. The end of the transmission shaft is electrically connected with the control electric station 5. The outer side of the control electric station 5 is fixedly connected with a driving motor 12. The output end of the driving motor 12 and the transmission shaft are connected through a gear set. When working, the driving motor 12 controls the transmission shaft and the rotating plate 13 to rotate through the gear set, thereby driving the whole induction coil 14 and the heating crucible 15 to overturn and pour out the alloy liquid. The two ends of the induction coil 14 are located in the transmission shaft and are electrically connected with the control electric station 5, thereby completing the rotation and power-on work. The rotating plate 13 also separates the inside and the outside, reducing heat leakage.

[0028] The bottom of the material taking seat 2 is fixedly connected with a bottom sliding plate 9. The top of the bottom sliding plate 9 is slidingly connected with a pulling seat 10. The front end of the pulling seat 10 is fixedly connected with a pull ring. The top of the pulling seat 10 is connected with the bottom of the forming mold 11. When working, when the forming mold 11 needs to be taken out, the gate 3 is only needed to be opened. The pull ring is fixed by hooking. The pulling seat 10 can be taken out outward, thereby completing the taking-out work of the forming mold 11.

[0029] An antimony-selenium alloy production method with automatic temperature control is provided. The method is suitable for the antimony-selenium alloy production device with automatic temperature control. The method specifically comprises: S1: Put the required amount of antimony metal in the heating crucible 15, then vacuumize the inside of the raw material box 7 to remove air and moisture, then fill it with protective gas, pass current through the induction coil 14 through the control station 5, and heat the antimony metal in the heating crucible 15 to 700-750 degrees Celsius to fully melt it; S2: Control the feeding pipe 21 to move to the bottom, and when it moves into the heating crucible 15, spray gas flow downward, which will separate the molten antimony liquid outward, and quickly drop the appropriate amount of selenium metal into the antimony liquid at the bottom of the feeding pipe 21, and close the gas flow spray before the selenium melts, while the feeding pipe 21 rises to its original position; S3: Adjust the temperature of the heating crucible 15 to 700 degrees Celsius when the selenium metal is dropped, and the internal temperature is basically maintained between 650 and 700 degrees Celsius as the selenium is added, and the selenium and antimony are fully mixed in the heating crucible 15 under electromagnetic stirring to form the required antimony selenium alloy. After mixing is complete, control the heating crucible 15 to flip and pour the liquid alloy into the appropriate forming mold 11, and when cooling is complete, open the gate 3 to remove the forming mold 11 to obtain the required antimony selenium alloy.

[0030] The specific steps for separating the antimony liquid by gas flow in S2 are as follows: Q1: Transmit protective gas through the gas flow pump 8, and the spiral transmission pipe 24 is adjusted to the lifting process of the adjusting seat 22 to spray gas from the bottom of the gas feeding pipe 21, and as the feeding pipe 21 sinks, the side nozzles 20 spray gas to both sides of the feeding pipe 21; Q2: The nozzle 20 is wide at the top and narrow at the bottom, and the side spray force gradually increases as the feeding pipe 21 penetrates, ensuring that the liquid surface never touches the feeding pipe 21.

[0031] When working, the required amount of antimony metal is placed in the heating crucible 15, then the inside of the raw material box 7 is pumped to a vacuum state, completely removing air and moisture, then the inside is filled with protective gas, which can be argon; the back plate of the induction melting furnace 1 can be removed for the addition of antimony metal and the connection of the negative pressure and protective gas equipment; then the current is passed to the induction coil 14 through the control console 5, the antimony metal in the heating crucible 15 is heated to 700-750 degrees Celsius, so that it is fully melted, then the control of the feeding pipe 21 is moved to the bottom, and when it is moved to the heating crucible 15, the gas flow is sprayed downward, which will separate the molten antimony liquid outward, since the antimony liquid is a metal liquid, the density is large, even under the action of the gas flow, it will also produce sputtering, but a concave cavity will be formed in the center part, at this time the bottom of the feeding pipe 21 quickly drops a proper amount of selenium metal into the antimony liquid, and the gas flow is turned off before the selenium is melted, at the same time the feeding pipe 21 rises to its original position, at this time the surrounding antimony metal liquid will quickly cover and wrap the selenium metal, and make it quickly heat and melt, the control console 5 controls the heating temperature by adjusting the current, when the selenium is added, the temperature of the heating crucible 15 is adjusted to maintain at 700 degrees Celsius, and at the same time the internal temperature is basically maintained between 650 and 700 degrees Celsius due to the use of electromagnetic heating, which will produce electromagnetic stirring; because the induced eddy current itself is also a current, this current will be affected by the Lorentz force in the magnetic field, in the molten metal, the direction of this force will drive the liquid to circulate in a certain direction, forming electromagnetic stirring; so as to ensure that the melted selenium and antimony are fully mixed in the heating crucible 15 to form the required antimony selenium alloy; the temperature adjustment is all around the melting point of antimony metal 631.1 degrees Celsius; after mixing, the heating crucible 15 is controlled to be turned over, and the liquid alloy is poured into the matched forming mold 11, the top side of the heating crucible 15 is provided with a pouring groove and a guide piece to assist the pouring process; when the cooling is completed, the gate 3 is opened to remove the forming mold 11 to obtain the required antimony selenium alloy; through this kind of setting, not only the efficient production and preparation function of selenium antimony alloy is realized, but also a temporary adding groove is formed in the antimony liquid by the action of the gas flow, which uses the antimony liquid itself to wrap the selenium metal for heating, which not only ensures the process of fully mixing the selenium metal with the antimony liquid, but also greatly reduces the problem of gasification of the selenium metal at high temperature, resulting in the escape of the selenium metal without reaction, and the problem of the toxic selenium gas filling in the equipment is difficult to handle, and the direct loss of expensive selenium raw materials is also reduced; at the same time, this kind of way is simple and easy to operate, and the selenium locking ability is excellent, and no additional additives are produced, at the same time, under the action of the gas flow, the low-temperature feeding pipe 21 is not used for direct contact with the high-temperature antimony liquid, which reduces the problem of the antimony liquid adhering and sticking to the feeding pipe 21, resulting in the loss of the antimony liquid and the alloy ratio error, and also reduces the post-processing step of cleaning the feeding pipe 21.

[0032] The feeding pipe 21 is located in the isolation box 6 during the heating process and does not participate in the heating process. When feeding is needed, the adjusting seat 22 is controlled to sink by the lifter 18, so that the end of the feeding pipe 21 extends into the heating crucible 15, and at the same time, the gas flow is started to spray outward, thereby achieving the effect of placing selenium metal at the bottom of the antimony liquid.

[0033] The protective gas is transmitted by the gas flow pump 8 and sprayed from the bottom of the feeding pipe 21. The spiral transmission pipe 24 is adapted to the lifting process of the adjusting seat 22. The raw material box 7 transfers the selenium metal to the adjusting seat 22 in an appropriate amount, and finally discharges from the bottom of the feeding pipe 21.

[0034] The double-layer linear structure of the selenium material 19 not only facilitates the feeding process of the feeding pipe 21, but also facilitates the winding storage of the linear selenium material 19 in the raw material box 7. The selenium material 19 is continuously discharged from the bottom of the feeding pipe 21 through the extrusion of the feeder 23. The feeder 23 can be an electric roller that clamps the selenium material 19. At the same time, the antimony layer wrapped by the selenium wire will not be quickly melted due to its high melting point, and will not be exposed until the feeding is completed. At this time, the antimony liquid has wrapped the selenium wire, so that it will not spread outward, thereby ensuring that the selenium material 19 will not overflow outward and can be fully mixed with the antimony liquid. The feeding pipe 21 is provided with a cutting assembly for cutting the selenium wire to ensure the separation of the raw materials.

[0035] With the sinking of the feeding pipe 21, the bottom spray port 26 at the bottom is difficult to ensure that the liquid surface expands to both sides. In cooperation with the side nozzle 20, the gas flow can be sprayed to both sides of the feeding pipe 21. The nozzle 20 is wide at the top and narrow at the bottom, and the side spraying force gradually increases as the feeding pipe 21 penetrates, thereby ensuring that the liquid surface will not contact the feeding pipe 21 at all times. The built-in scale of the heating crucible 15 ensures that the amount of raw materials in the heating crucible 15 is not too much, so that the liquid surface will not overflow the heating crucible 15 under the action of the gas flow.

[0036] With the sinking of the feeding pipe 21, the gas flow will directly act on the top surface of the adding table 17, thereby blowing away the liquid surface on the adding table 17. At this time, the selenium material 19 can be continuously placed on the adding table 17 and temporarily not in contact with the high-temperature antimony liquid. When the feeding is completely completed, the antimony liquid will wrap the selenium material 19 after the gas flow is closed, thereby completing the melting and mixing work. The expansion shape of the top surface of the adding table 17 can facilitate the displacement of the antimony liquid and the placement of the selenium material 19, and will not affect the pouring of the finished product.

[0037] The driving motor 12 controls the transmission shaft and the rotating plate 13 to rotate through the gear set, thereby driving the overall induction coil 14 and the heating crucible 15 to flip and pour out the alloy liquid. The two ends of the induction coil 14 are located in the transmission shaft and are electrically connected to the control console 5, thereby completing the rotation and power-on work. The rotating plate 13 also separates the inside and outside to reduce heat leakage.

[0038] When the forming die 11 needs to be taken out, the gate 3 is opened, the pull ring is fixed by the hook, the pull-out seat 10 is taken out, and the taking-out work of the forming die 11 is completed.

[0039] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An antimony-selenium alloy production equipment with automatic temperature control, characterized in that: The system includes an induction melting furnace, inside which is a rotating heating crucible. An induction coil is installed on the outside of the heating crucible, with both ends of the induction coil passing through the induction melting furnace and connected to a control radio station. A material receiving seat and a control plate are fixedly connected to the front end of the induction melting furnace. A gate is installed at the front end of the material receiving seat. A forming mold capable of translation and sliding is installed in the material receiving seat. A feeding pipe is installed above the heating crucible, and a bottom nozzle for jetting airflow is opened at the bottom of the feeding pipe.

2. The antimony selenium alloy production equipment with automatic temperature control according to claim 1, characterized in that: An isolation box is fixedly connected to the top of the induction melting furnace. A connecting hole for the feeding pipe to pass through is provided between the isolation box and the induction melting furnace. A vertical lifter is installed inside the isolation box. An adjustment seat is fixedly connected to the top of the feeding pipe. The lifting end of the lifter is fixedly connected to the adjustment seat.

3. The antimony selenium alloy production equipment with automatic temperature control according to claim 2, characterized in that: An air pump is fixedly connected to the top of the isolation box, and a spiral transmission pipe is fixedly connected between the air pump and the adjustment seat. A raw material box for storing selenium material is fixedly connected to the outside of the induction melting furnace, and the raw material box is connected to the adjustment seat.

4. The antimony selenium alloy production equipment with automatic temperature control according to claim 3, characterized in that: The bottom of the feeding pipe is provided with a feeding port, and a feeder is installed on one side of the top of the adjusting seat. The selenium material is in the form of a thin thread and has a double-layer structure, with a selenium thread in the center and an antimony layer wrapped around the selenium thread.

5. The antimony selenium alloy production equipment with automatic temperature control according to claim 4, characterized in that: Multiple nozzles are provided on the outer side of the feeding pipe, and an annular bottom nozzle is provided at the bottom of the feeding pipe. The nozzles are arranged in a shape that is wider at the top and narrower at the bottom.

6. The antimony selenium alloy production equipment with automatic temperature control according to claim 5, characterized in that: An addition platform is fixed to the bottom of the heating crucible. The addition platform is wider at the top and narrower at the bottom, and there is a gap between the top edge of the addition platform and the inner wall of the heating crucible.

7. The antimony selenium alloy production equipment with automatic temperature control according to claim 6, characterized in that: A support base is fixed to the bottom of the heating crucible. A rotating plate is fixed between the support base and the end of the induction coil. The rotating plate is semi-circular. A drive shaft is fixed to the center of the rotating plate. The drive shaft is rotatably engaged with the induction melting furnace. The end of the drive shaft is electrically connected to the control station. A drive motor is fixed to the outside of the control station. The output end of the drive motor is connected to the drive shaft through a gear set.

8. The antimony selenium alloy production equipment with automatic temperature control according to claim 7, characterized in that: The bottom of the material taking seat is fixedly connected to a bottom slide plate, the top of the bottom slide plate is slidably engaged with a pull-out seat, the front end of the pull-out seat is fixedly connected to a pull ring, and the top of the pull-out seat is engaged with the bottom of the forming mold.

9. A method for producing antimony selenium alloy with automatic temperature control, the method being applicable to the antimony selenium alloy production equipment with automatic temperature control as described in any one of claims 1-8, characterized in that: The method is as follows: S1: Place the required amount of antimony metal in a heating crucible, then evacuate the inside of the raw material box to a vacuum state to completely remove air and moisture, then fill the inside with protective gas, and pass current through the induction coil via the control radio to heat the antimony metal in the heating crucible to 700 to 750 degrees Celsius so that it can be fully melted. S2: Control the feeding tube to move to the bottom, and when it moves into the heating crucible, spray air downwards. The airflow will separate the molten antimony liquid outwards. Quickly add an appropriate amount of selenium metal to the antimony liquid at the bottom of the feeding tube, and turn off the airflow before the selenium melts. At the same time, the feeding tube rises back to its original position. S3: When selenium metal is added, the temperature of the heating crucible is adjusted to maintain at 700 degrees Celsius. As selenium is added, the internal temperature is basically maintained between 650 and 700 degrees Celsius. Under electromagnetic stirring, selenium and antimony are fully mixed in the heating crucible to form the desired antimony-selenium alloy. After mixing, the heating crucible is turned over and the liquid alloy is poured into a suitable molding mold. After cooling, the gate is opened to remove the molding mold and obtain the desired antimony-selenium alloy.

10. A method for producing an antimony selenium alloy with automatic temperature control according to claim 9, characterized in that: The specific steps by which the airflow separates the antimony liquid in S2 are as follows: Q1: Protective gas is transmitted through an air pump. The spiral transmission tube is designed to adapt to the lifting and lowering process of the adjusting seat, allowing the gas to be ejected from the bottom of the feeding tube. As the feeding tube sinks, it works in conjunction with the nozzles on the side to spray airflow to both sides of the feeding tube. Q2: The nozzle, which is wider at the top and narrower at the bottom, gradually increases the side spray force as the feed tube goes deeper, ensuring that the liquid surface never comes into contact with the feed tube.

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