High-temperature smelting device for improving melting effect of silica powder

Abstract

The invention relates to the technical field of smelting, in particular to a high-temperature smelting device for improving the melting effect of silica powder, which comprises a smelting furnace and a gas system, a smelting space is arranged in the smelting furnace, a round-basin-shaped smelting pool is arranged in the smelting space, and an air inlet is formed in the portion, over the middle of the smelting pool, of the smelting pool. The gas system comprises a third gas cylinder; compressed gas is contained in the third gas cylinder; opening a third gas cylinder, immediately closing the third gas cylinder after high-speed airflow rushes to the smelting pool, enabling the airflow to fluctuate on the surface of the quartz in a molten state, mutually overlapping wave crests at the center to form a peak wave, and immediately opening the third gas cylinder to impact the peak wave which is about to move downwards when the peak wave reaches the highest value; repeatedly executing after the impact is completed; according to the invention, gas stirring is realized by adopting the gas system, so that only gas is in contact with quartz in the stirring process, and no new impurities are generated; the amplitude of peak wave downward re-impact waveform is larger; other quartz in a molten state at the bottom of the smelting pool can be surged by the waves on the upper layer, and stirring is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of smelting, and in particular to a high-temperature smelting device for improving the melting effect of silicon micropowder. Background Art

[0002] Silica powder is a non-toxic, odorless, pollution-free inorganic non-metallic material. It has excellent properties such as good temperature resistance, acid and alkali corrosion resistance, high thermal conductivity, high insulation, low expansion, stable chemical properties and high hardness.

[0003] At present, most of the silicon micropowder smelting production processes are to directly put natural quartz into the smelting furnace. The heater at the bottom of the smelting furnace heats the natural quartz inside the smelting furnace. Since the heater is located below the smelting furnace, in order to ensure uniform heating of the quartz, a metal stirrer is used for stirring due to the high temperature required for quartz melting. This causes a series of problems. Due to the high hardness of quartz, some unmelted quartz causes wear on the surface of the stirrer, thereby damaging the stirrer and introducing impurities. In the molten state, it will adhere to the surface of the stirrer, resulting in loss of raw materials, which requires manual cleaning in the molten state, which can easily scald the staff and is very inconvenient. The molten quartz transfers heat to the stirrer, reducing the melting effect while causing subtle reactions when the stirrer is heated, such as the production of metal oxides. These oxides enter the quartz as impurities and affect the quality of the final silicon micropowder.

[0004] Therefore, there is a need for a high-temperature smelting device that can achieve stirring while avoiding the generation of impurities and improve the melting effect of silicon micropowder. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-temperature smelting device which can achieve stirring while avoiding the generation of impurities and improve the melting effect of silicon micropowder.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A high-temperature smelting device for improving the melting effect of silicon micropowder comprises a smelting furnace, a controller and a gas system; the controller controls the operation of the smelting furnace and the gas system; A smelting space is provided inside the smelting furnace, a round basin-shaped smelting pool is provided in the smelting space, and heating components are provided in the smelting furnace at the side and bottom of the smelting pool; an air inlet is provided on the smelting pool just above the middle of the smelting pool, and an air outlet and a closable feeding port are provided on the side wall of the smelting furnace; The gas system comprises an outer shell, a first gas cylinder, a second gas cylinder, a third gas cylinder, a first valve, a second valve, a one-way valve, a heater, and a compressor. The heater is arranged on the gas inlet. The first gas cylinder, the second gas cylinder, and the third gas cylinder are arranged in the outer shell. The first valve is communicated with the first gas cylinder and the gas outlet, respectively. The one-way valve is communicated with the first gas cylinder and the second gas cylinder, respectively. The compressor is communicated with the second gas cylinder and the third gas cylinder, respectively. The second valve is communicated with the third gas cylinder and the heater, respectively. The third gas cylinder contains compressed gas. When the high-temperature smelting device for improving the melting effect of silicon micropowder is working, the controller opens the feeding port to put quartz into the smelting pool and then closes the feeding port, and the quartz is filled to two-thirds of the smelting pool at most; the controller starts the heating component to heat the smelting pool, and the air flow is stirred after the quartz is heated to a completely molten state; The airflow stirring comprises: a controller opens the first valve, the second valve, the heater, and the compressor at the same time; a high-speed airflow formed at the moment the second valve is opened is heated and then rushes toward the smelting pool from the top of the middle of the smelting pool, and then the second valve is immediately closed; the high-speed airflow impacts the surface of the molten quartz to form a wave; due to the round basin-shaped smelting pool, the wave takes the same time to return to the middle of the molten quartz after hitting the edge of the smelting pool, so that the wave crests are superimposed on each other at the center to form a spike wave; when the spike wave reaches the highest point, the controller immediately opens the second valve to impact the spike wave that is about to go down; after the impact is completed, the controller repeatedly executes the action of opening the second valve to impact the spike wave that is about to go down; After the air flow stirring is completed, the first valve, the second valve, the heater, the compressor, and the heating component are closed, and the feeding port is opened to take out the smelting pool.

[0007] Preferably, a desiccant is provided in the first gas cylinder; The gas system further comprises an air pump and a three-way valve, wherein the three-way valve is connected to the second gas cylinder and the heater respectively; the air pump is arranged between the second gas cylinder and the three-way valve; Before the quartz is heated to a completely molten state, the controller opens the first valve, the air pump, the three-way valve, and the heater, and simultaneously closes the second valve and the compressor.

[0008] Preferably, a filter assembly is also provided in the first gas cylinder.

[0009] Preferably, a blowing port is further provided on the side wall of the smelting furnace above the smelting pool, the blowing port is arranged toward the smelting pool and the air outlet direction of the blowing port deviates from the center of the smelting pool; The air port is connected to the three-way valve; when the quartz is heated to a partially molten state, the controller opens the first valve and the air pump, controls the three-way valve to be connected to the air port, and uses the air flow blown out of the air port to make the partially molten quartz form a vortex for pre-stirring, while closing the second valve and the compressor.

[0010] Preferably, the controller turns off the air pump and the three-way valve during the airflow stirring.

[0011] Preferably, an observation window is provided on the feeding port.

[0012] Preferably, the smelting furnace further comprises a camera, which is electrically connected to the controller, and is disposed on the observation window and facing the smelting pool, and the camera observes the state of the quartz in the smelting pool through the camera.

[0013] Preferably, the compressed gas is an inert gas.

[0014] Preferably, the outer surfaces of the first gas cylinder, the second gas cylinder, the third gas cylinder, the first valve, the second valve and the one-way valve are all provided with a heat-insulating layer.

[0015] Preferably, a heat reflective coating is provided on the side walls of the smelting space.

[0016] The beneficial effects of the present invention are as follows: gas stirring is achieved by adopting a gas system, so that only gas contacts quartz during the stirring process, and no new impurities are generated; and by means of gas stirring, since quartz in a molten state has great viscosity, but is still a fluid, the center of the smelting pool is vertically impacted by airflow, and combined with the round basin-shaped smelting pool, the wave diffusion speed from the center to the surrounding is the same, and since the quartz is filled to two-thirds of the smelting pool at most, it is ensured that the return wave hits the side wall of the smelting pool and does not overflow due to the high peak, thereby ensuring the formation of a spike wave, and while the spike wave is descending, the second valve is opened again for impact, so that the amplitude of the formed waveform is larger. This principle is the same as dripping a drop of water into the center of the water, and a small drop of water will fly up from the original dripping place. It is a peak wave formed by the superposition of wave peaks, but in this application, since quartz has great viscosity and will not separate, it needs to be impacted repeatedly until the amplitude of the formed wave reaches the maximum; the formation of the wave combined with the great viscosity of quartz in the molten state makes other molten quartz at the bottom of the smelting pool also be pushed or surged by the upper wave, that is, the transfer of force, thereby achieving stirring, and the great viscosity makes the peak wave limited and will not exceed the top of the smelting furnace; through the heater, it can be ensured that the gas after compression and release still has sufficient temperature, so that the smelting pool can be heated at 360°, thereby improving the heating efficiency; through the setting of the second gas cylinder, it can play the role of gas buffering, and combined with the compressed gas in the third gas cylinder, it can be achieved that there is enough gas in the gas system for impact without affecting the operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the exterior of a high-temperature smelting device for improving the melting effect of silicon powder according to a specific embodiment of the present invention from a first angle; Figure 2 It is a schematic diagram of the exterior of a high-temperature smelting device for improving the melting effect of silicon powder according to a specific embodiment of the present invention from a second angle; Figure 3 It is a structural schematic diagram of a high-temperature smelting device for improving the melting effect of silicon micropowder according to a specific embodiment of the present invention; Figure 4 A schematic diagram of the fluctuation of quartz after melting in a high-temperature smelting device for improving the melting effect of silicon powder according to a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the working of the air blowing port of a high-temperature smelting device for improving the melting effect of silicon micropowder according to a specific embodiment of the present invention; Explanation of reference numerals: 1. Melting furnace; 11. Melting pool; 12. Heating component; 13. Air inlet; 14. Air outlet; 15. Feed port; 16. Air blowing port; 17. Observation window; 18. Camera; 2. Gas system; 201. Outer shell; 202. First gas cylinder; 2021. Desiccant; 2022. Filter component; 203. Second gas cylinder; 204. Third gas cylinder; 205. First valve; 206. Second valve; 207. One-way valve; 208. Heater; 209. Compressor; 210. Air pump; 211. Three-way valve; 3. Fluctuation; 31. Peak wave; 32. Surge. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0019] Please refer to Figures 1 to 5 , a high-temperature smelting device for improving the melting effect of silicon micropowder, comprising a smelting furnace 1, a controller and a gas system 2; the controller controls the operation of the smelting furnace 1 and the gas system 2; A smelting space is provided inside the smelting furnace 1, a round basin-shaped smelting pool 11 is provided in the smelting space, and a heating assembly 12 is provided in the smelting furnace 1 at the side and bottom of the smelting pool 11; an air inlet 13 is provided on the smelting pool 11 just above the middle of the smelting pool 11, and an air outlet 14 and a closable feeding port 15 are provided on the side wall of the smelting furnace 1; The gas system 2 includes an outer shell 201, a first gas cylinder 202, a second gas cylinder 203, a third gas cylinder 204, a first valve 205, a second valve 206, a one-way valve 207, a heater 208, and a compressor 209. The heater 208 is arranged on the gas inlet 13. The first gas cylinder 202, the second gas cylinder 203, and the third gas cylinder 204 are arranged in the outer shell 201. The first valve 205 is communicated with the first gas cylinder 202 and the gas outlet 14 respectively. The one-way valve 207 is communicated with the first gas cylinder 202 and the second gas cylinder 203 respectively. The compressor 209 is communicated with the second gas cylinder 203 and the third gas cylinder 204 respectively. The second valve 206 is communicated with the third gas cylinder 204 and the heater 208 respectively. The third gas cylinder 204 has compressed gas. When the high-temperature smelting device for improving the melting effect of silicon powder is working, the controller opens the feed port 15 to put the quartz into the smelting pool 11 and then closes the feed port 15. The quartz is filled to two-thirds of the smelting pool 11 at most; the controller starts the heating component 12 to heat the smelting pool 11, and the quartz is stirred by airflow after being heated to a completely molten state; The airflow stirring includes: the controller opens the first valve 205, the second valve 206, the heater 208, and the compressor 209 at the same time; the high-speed airflow formed at the moment the second valve 206 is opened is heated and rushes to the smelting pool 11 from the middle part of the smelting pool 11, and then the second valve 206 is immediately closed; the high-speed airflow impacts the surface of the molten quartz to form a wave 3; due to the round basin-shaped smelting pool 11, the wave 3 takes the same time to return to the middle part of the molten quartz after hitting the edge of the smelting pool 11, so that the wave peaks are superimposed on each other at the center to form a peak wave 31; when the peak wave 31 reaches the highest point, the controller immediately opens the second valve 206 to impact the peak wave 31 that is about to go down; after the impact is completed, the controller repeats the action of opening the second valve 206 to impact the peak wave 31 that is about to go down; After the air flow stirring is completed, the first valve 205, the second valve 206, the heater 208, the compressor 209, and the heating assembly 12 are closed, and the feeding port 15 is opened to take out the smelting pool 11.

[0020] From the above description, it can be seen that by adopting the gas system 2 to achieve gas stirring, only the gas contacts the quartz during the stirring process, and no new impurities are generated; and by means of gas stirring, since the viscosity of quartz in the molten state is extremely high, but it is still a fluid, the center of the smelting pool 11 is vertically impacted by the airflow, and combined with the round basin-shaped smelting pool 11, the wave 3 diffuses from the center to the surroundings at the same speed. Since the quartz is filled to two-thirds of the smelting pool 11 at most, it is ensured that the return wave hits the side wall of the smelting pool 11 and does not overflow due to the high peak, so as to ensure the formation of the peak wave 31. While the peak wave 31 is descending, the second valve 206 is opened again for impact, so that the amplitude of the formed waveform is larger. This principle is the same as dripping a drop of water into the center of the water, and a small drop of water will fly up from the original dripping place. That is, the peak overlaps. The peak wave 31 formed after the addition of the quartz, while the present application requires repeated impacts until the amplitude of the formed wave 3 reaches the maximum due to the extremely high viscosity of the quartz in the molten state; the formation of the wave combined with the extremely high viscosity of the quartz in the molten state makes the other molten quartz at the bottom of the smelting pool 11 also be pushed or surged 32 by the upper wave, that is, the transmission of force, thereby achieving stirring, and the extremely high viscosity makes the peak wave 31 limited and will not exceed the top of the smelting furnace 1; through the heater 208, it can be ensured that the gas after compression and release still has sufficient temperature, so that the smelting pool 11360° can be heated, and the heating efficiency is improved; through the setting of the second gas cylinder 203, it can play the role of gas buffering, combined with the compressed gas in the third gas cylinder 204, to achieve sufficient gas in the gas system 2 for impact without affecting the operation of the compressor 209. The round basin-shaped smelting pool 11 prevents the molten quartz in the dead corner from being difficult to be stirred and mixed, and it is also convenient to pour out and cool after smelting.

[0021] Furthermore, a desiccant 2021 is provided in the first gas cylinder 202; The gas system 2 further includes an air pump 210 and a three-way valve 211, wherein the three-way valve 211 is connected to the second gas cylinder 203 and the heater 208 respectively; the air pump 210 is disposed between the second gas cylinder 203 and the three-way valve 211; Before the quartz is heated to a completely molten state, the controller opens the first valve 205 , the air pump 210 , the three-way valve 211 , and the heater 208 , and simultaneously closes the second valve 206 and the compressor 209 .

[0022] From the above description, it can be known that the desiccant 2021 can remove all moisture in the gas device, preventing the quartz from being heated to a molten state and reacting with moisture or hydrogen, oxygen, and hydroxide ions after decomposition of moisture, thereby further avoiding the generation of impurities.

[0023] Furthermore, a filter component 2022 is also provided in the first gas cylinder 202 .

[0024] It can be seen from the above description that the filter assembly 2022 can filter the gas in the high-temperature smelting device to reduce impurities.

[0025] Furthermore, a blowing port 16 is provided on the side wall of the smelting furnace 1 above the smelting pool 11. The blowing port 16 is arranged toward the smelting pool 11 and the outlet direction of the blowing port 16 deviates from the center of the smelting pool 11. The air port 16 is connected to the three-way valve 211; when the quartz is heated to a partially molten state, the controller opens the first valve 205 and the air pump 210, controls the three-way valve 211 to be connected to the air port 16, and utilizes the air flow blown out of the air port 16 to cause the partially molten quartz to form a vortex for pre-stirring, while closing the second valve 206 and the compressor 209.

[0026] From the above description, it can be seen that the airflow blown out through the air port 16 causes the partially molten quartz to form a vortex for pre-stirring, which can further enhance the heat conduction effect and thus accelerate the melting.

[0027] Furthermore, the controller turns off the air pump 210 and the three-way valve 211 during the airflow stirring.

[0028] Furthermore, an observation window 17 is provided on the feeding port 15 .

[0029] It can be seen from the above description that observation can be achieved through the provision of the observation window 17 .

[0030] Furthermore, the smelting furnace 1 also includes a camera 18, which is electrically connected to the controller. The camera 18 is arranged on the observation window 17 and is arranged toward the smelting pool 11. The camera 18 observes the state of the quartz in the smelting pool 11 through the camera 18.

[0031] Furthermore, the compressed gas is an inert gas.

[0032] It can be seen from the above description that the presence of production impurities can be reduced as much as possible by using an inert gas.

[0033] Furthermore, the outer surfaces of the first gas cylinder 202 , the second gas cylinder 203 , the third gas cylinder 204 , the first valve 205 , the second valve 206 , and the one-way valve 207 are all provided with a heat-insulating layer.

[0034] It can be seen from the above description that by providing a thermal insulation layer, thermal insulation can be achieved and energy consumption can be reduced.

[0035] Furthermore, a heat reflective coating is provided on the side walls of the smelting space.

[0036] From the above description, it can be seen that the heat radiated by the heated and melted quartz can be reflected in the smelting space through the heat reflective coating, thereby ensuring the heat preservation effect. Embodiment 1

[0037] A high-temperature smelting device for improving the melting effect of silicon micropowder comprises a smelting furnace 1, a controller and a gas system 2; the controller controls the operation of the smelting furnace 1 and the gas system 2; A smelting space is provided inside the smelting furnace 1, a round basin-shaped smelting pool 11 is provided in the smelting space, and a heating assembly 12 is provided in the smelting furnace 1 at the side and bottom of the smelting pool 11; an air inlet 13 is provided on the smelting pool 11 just above the middle of the smelting pool 11, and an air outlet 14 and a closable feeding port 15 are provided on the side wall of the smelting furnace 1; The gas system 2 includes an outer shell 201, a first gas cylinder 202, a second gas cylinder 203, a third gas cylinder 204, a first valve 205, a second valve 206, a one-way valve 207, a heater 208, and a compressor 209. The heater 208 is arranged on the gas inlet 13. The first gas cylinder 202, the second gas cylinder 203, and the third gas cylinder 204 are arranged in the outer shell 201. The first valve 205 is communicated with the first gas cylinder 202 and the gas outlet 14 respectively. The one-way valve 207 is communicated with the first gas cylinder 202 and the second gas cylinder 203 respectively. The compressor 209 is communicated with the second gas cylinder 203 and the third gas cylinder 204 respectively. The second valve 206 is communicated with the third gas cylinder 204 and the heater 208 respectively. The third gas cylinder 204 has compressed gas. When the high-temperature smelting device for improving the melting effect of silicon powder is working, the controller opens the feed port 15 to put the quartz into the smelting pool 11 and then closes the feed port 15. The quartz is filled to two-thirds of the smelting pool 11 at most; the controller starts the heating component 12 to heat the smelting pool 11, and the quartz is stirred by airflow after being heated to a completely molten state; The airflow stirring includes: the controller opens the first valve 205, the second valve 206, the heater 208, and the compressor 209 at the same time; the high-speed airflow formed at the moment the second valve 206 is opened is heated and rushes to the smelting pool 11 from the middle part of the smelting pool 11, and then the second valve 206 is immediately closed; the high-speed airflow impacts the surface of the molten quartz to form a wave 3; due to the round basin-shaped smelting pool 11, the wave 3 takes the same time to return to the middle part of the molten quartz after hitting the edge of the smelting pool 11, so that the wave peaks are superimposed on each other at the center to form a peak wave 31; when the peak wave 31 reaches the highest point, the controller immediately opens the second valve 206 to impact the peak wave 31 that is about to go down; after the impact is completed, the controller repeats the action of opening the second valve 206 to impact the peak wave 31 that is about to go down; After the air flow stirring is completed, the first valve 205, the second valve 206, the heater 208, the compressor 209, and the heating assembly 12 are closed, and the feeding port 15 is opened to take out the smelting pool 11.

[0038] The first gas cylinder 202 is provided with a desiccant 2021; The gas system 2 further includes an air pump 210 and a three-way valve 211, wherein the three-way valve 211 is connected to the second gas cylinder 203 and the heater 208 respectively; the air pump 210 is disposed between the second gas cylinder 203 and the three-way valve 211; Before the quartz is heated to a completely molten state, the controller opens the first valve 205 , the air pump 210 , the three-way valve 211 , and the heater 208 , and simultaneously closes the second valve 206 and the compressor 209 .

[0039] A filter assembly 2022 is also disposed in the first gas cylinder 202 .

[0040] An air blowing port 16 is also provided on the side wall of the smelting furnace 1 above the smelting pool 11. The air blowing port 16 is arranged toward the smelting pool 11 and the air outlet direction of the air blowing port 16 deviates from the center of the smelting pool 11. The air port 16 is connected to the three-way valve 211; when the quartz is heated to a partially molten state, the controller opens the first valve 205 and the air pump 210, controls the three-way valve 211 to be connected to the air port 16, and utilizes the air flow blown out of the air port 16 to cause the partially molten quartz to form a vortex for pre-stirring, while closing the second valve 206 and the compressor 209.

[0041] During the air flow stirring, the controller turns off the air pump 210 and the three-way valve 211 .

[0042] The feeding port 15 is provided with an observation window 17 .

[0043] The smelting furnace 1 further includes a camera 18 , which is electrically connected to the controller. The camera 18 is disposed on the observation window 17 and faces the smelting pool 11 . The camera 18 observes the state of the quartz in the smelting pool 11 through the camera 18 .

[0044] The compressed gas is an inert gas, such as helium or neon.

[0045] The outer surfaces of the first gas cylinder 202 , the second gas cylinder 203 , the third gas cylinder 204 , the first valve 205 , the second valve 206 , and the one-way valve 207 are all provided with a heat-insulating layer.

[0046] The side walls of the smelting space are provided with a heat reflective coating. Embodiment 2

[0047] A high-temperature smelting device for improving the melting effect of silicon micropowder comprises a smelting furnace 1, a controller and a gas system 2; the controller controls the operation of the smelting furnace 1 and the gas system 2; A smelting space is provided inside the smelting furnace 1, a round basin-shaped smelting pool 11 is provided in the smelting space, and a heating assembly 12 is provided in the smelting furnace 1 at the side and bottom of the smelting pool 11; an air inlet 13 is provided on the smelting pool 11 just above the middle of the smelting pool 11, and an air outlet 14 and a closable feeding port 15 are provided on the side wall of the smelting furnace 1; The gas system 2 includes an outer shell 201, a first gas cylinder 202, a second gas cylinder 203, a third gas cylinder 204, a first valve 205, a second valve 206, a one-way valve 207, a heater 208, and a compressor 209. The heater 208 is arranged on the gas inlet 13. The first gas cylinder 202, the second gas cylinder 203, and the third gas cylinder 204 are arranged in the outer shell 201. The first valve 205 is communicated with the first gas cylinder 202 and the gas outlet 14 respectively. The one-way valve 207 is communicated with the first gas cylinder 202 and the second gas cylinder 203 respectively. The compressor 209 is communicated with the second gas cylinder 203 and the third gas cylinder 204 respectively. The second valve 206 is communicated with the third gas cylinder 204 and the heater 208 respectively. The third gas cylinder 204 has compressed gas. When the high-temperature smelting device for improving the melting effect of silicon powder is working, the controller opens the feed port 15 to put the quartz into the smelting pool 11 and then closes the feed port 15. The quartz is filled to two-thirds of the smelting pool 11 at most; the controller starts the heating component 12 to heat the smelting pool 11, and the quartz is stirred by airflow after being heated to a completely molten state; The airflow stirring includes: the controller opens the first valve 205, the second valve 206, the heater 208, and the compressor 209 at the same time; the high-speed airflow formed at the moment the second valve 206 is opened is heated and rushes to the smelting pool 11 from the middle part of the smelting pool 11, and then the second valve 206 is immediately closed; the high-speed airflow impacts the surface of the molten quartz to form a wave 3; due to the round basin-shaped smelting pool 11, the wave 3 takes the same time to return to the middle part of the molten quartz after hitting the edge of the smelting pool 11, so that the wave peaks are superimposed on each other at the center to form a peak wave 31; when the peak wave 31 reaches the highest point, the controller immediately opens the second valve 206 to impact the peak wave 31 that is about to go down; after the impact is completed, the controller repeats the action of opening the second valve 206 to impact the peak wave 31 that is about to go down; After the air flow stirring is completed, the first valve 205, the second valve 206, the heater 208, the compressor 209, and the heating assembly 12 are closed, and the feeding port 15 is opened to take out the smelting pool 11.

[0048] The first gas cylinder 202 is provided with a desiccant 2021; The gas system 2 further includes an air pump 210 and a three-way valve 211, wherein the three-way valve 211 is connected to the second gas cylinder 203 and the heater 208 respectively; the air pump 210 is disposed between the second gas cylinder 203 and the three-way valve 211; Before the quartz is heated to a completely molten state, the controller opens the first valve 205 , the air pump 210 , the three-way valve 211 , and the heater 208 , and simultaneously closes the second valve 206 and the compressor 209 .

[0049] A filter assembly 2022 is also disposed in the first gas cylinder 202 .

[0050] During the air flow stirring, the controller turns off the air pump 210 and the three-way valve 211 .

[0051] The feeding port 15 is provided with an observation window 17 .

[0052] The smelting furnace 1 further includes a camera 18 , which is electrically connected to the controller. The camera 18 is disposed on the observation window 17 and faces the smelting pool 11 . The camera 18 observes the state of the quartz in the smelting pool 11 through the camera 18 .

[0053] The outer surfaces of the first gas cylinder 202 , the second gas cylinder 203 , the third gas cylinder 204 , the first valve 205 , the second valve 206 , and the one-way valve 207 are all provided with a heat-insulating layer.

[0054] The side walls of the smelting space are provided with a heat reflective coating.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-temperature smelting device for improving the melting effect of silicon micropowder, characterized in that: It includes a smelting furnace, a controller and a gas system; the controller controls the operation of the smelting furnace and the gas system; A smelting space is provided inside the smelting furnace, a round basin-shaped smelting pool is provided in the smelting space, and heating components are provided in the smelting furnace at the side and bottom of the smelting pool; an air inlet is provided on the smelting pool just above the middle of the smelting pool, and an air outlet and a closable feeding port are provided on the side wall of the smelting furnace; The gas system comprises an outer shell, a first gas cylinder, a second gas cylinder, a third gas cylinder, a first valve, a second valve, a one-way valve, a heater, and a compressor. The heater is arranged on the gas inlet. The first gas cylinder, the second gas cylinder, and the third gas cylinder are arranged in the outer shell. The first valve is communicated with the first gas cylinder and the gas outlet, respectively. The one-way valve is communicated with the first gas cylinder and the second gas cylinder, respectively. The compressor is communicated with the second gas cylinder and the third gas cylinder, respectively. The second valve is communicated with the third gas cylinder and the heater, respectively. The third gas cylinder contains compressed gas. When the high-temperature smelting device for improving the melting effect of silicon micropowder is working, the controller opens the feeding port to put quartz into the smelting pool and then closes the feeding port, and the quartz is filled to two-thirds of the smelting pool at most; the controller starts the heating component to heat the smelting pool, and the air flow is stirred after the quartz is heated to a completely molten state; The airflow stirring comprises: a controller opens the first valve, the second valve, the heater, and the compressor at the same time; a high-speed airflow formed at the moment the second valve is opened is heated and then rushes toward the smelting pool from the top of the middle of the smelting pool, and then the second valve is immediately closed; the high-speed airflow impacts the surface of the molten quartz to form a wave; due to the round basin-shaped smelting pool, the wave takes the same time to return to the middle of the molten quartz after hitting the edge of the smelting pool, so that the wave crests are superimposed on each other at the center to form a spike wave; when the spike wave reaches the highest point, the controller immediately opens the second valve to impact the spike wave that is about to go down; after the impact is completed, the controller repeatedly executes the action of opening the second valve to impact the spike wave that is about to go down; After the air flow stirring is completed, the first valve, the second valve, the heater, the compressor, and the heating component are closed, and the feeding port is opened to take out the smelting pool.

2. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 1, characterized in that: A desiccant is provided in the first gas cylinder; The gas system further comprises an air pump and a three-way valve, wherein the three-way valve is connected to the second gas cylinder and the heater respectively; the air pump is arranged between the second gas cylinder and the three-way valve; Before the quartz is heated to a completely molten state, the controller opens the first valve, the air pump, the three-way valve, and the heater, and simultaneously closes the second valve and the compressor.

3. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 2, characterized in that: A filter assembly is also provided in the first gas cylinder.

4. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 2, characterized in that: An air blowing port is also provided on the side wall of the smelting furnace above the smelting pool, and the air blowing port is arranged toward the smelting pool and the air outlet direction of the air blowing port deviates from the center of the smelting pool; The air port is connected to the three-way valve; when the quartz is heated to a partially molten state, the controller opens the first valve and the air pump, controls the three-way valve to be connected to the air port, and uses the air flow blown out of the air port to make the partially molten quartz form a vortex for pre-stirring, while closing the second valve and the compressor.

5. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 4, characterized in that: When the air flow is stirring, the controller turns off the air pump and the three-way valve.

6. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 1, characterized in that: An observation window is arranged on the feeding port.

7. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 6, characterized in that: The smelting furnace also includes a camera, which is electrically connected to the controller. The camera is arranged on the observation window and faces the smelting pool. The camera observes the state of the quartz in the smelting pool through the camera.

8. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 1, characterized in that: The compressed gas is an inert gas.

9. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 1, characterized in that: The outer surfaces of the first gas cylinder, the second gas cylinder, the third gas cylinder, the first valve, the second valve and the one-way valve are all provided with a heat-insulating layer.

10. The high-temperature smelting device for improving the melting effect of silicon powder according to claim 1, characterized in that: The side walls of the smelting space are provided with a heat reflective coating.

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