TWM608559U

TWM608559U - Equipment for producing spherical particles

Info

Publication number: TWM608559U
Application number: TW109214439U
Authority: TW
Inventors: 方聖予; 鄧茂英; 侯旻伶; 蕭達慶
Original assignee: 財團法人工業技術研究院
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-03-01

Abstract

An equipment for producing spherical particles includes a chamber, an air flow assisted powder mixing and dispersing feeding device, a spiral mixing conveying pipe and a control module. The chamber has a burner, a jet cooling air flow device, a water-cooled bottom lining and a product conveying pipe. The air flow assisted powder mixing and dispersing feeding device has a base, a powder feeder, a powder feeding pipeline and a gas conveying pipeline. The spiral mixing conveying pipe has a feeding conveying pipe. The feeding conveying pipe is used to connect the chamber. The spiral mixing conveying pipe is connected the base. The control module controls the feeding powder to pass through the powder feeder and the powder feeding pipeline, and controls the high-pressure air flow of the gas conveying pipeline to push the feeding powder. And, the feed powder enters the burner through the spiral mixing conveying pipe.

Description

粉體圓球化設備Powder spheroidization equipment

本創作係有關於一種圓球化設備，特別是有關於一種粉體圓球化設備。This creation is related to a spheroidization equipment, especially a powder spheroidization equipment.

當前二氧化矽粉體之圓球化方式多以焰熔法(flame and fusion)為主。圓球化程序為：將欲圓球化之粉體送入燃料及氧氣混合之高溫火焰中，利用高溫火焰加熱粉體表面至其熔點溫度後，再進行急速冷卻，使粉體在冷卻的過程中因表面張力而趨於圓球狀，且具有非晶質之粉體特性。然而，在圓球化的過程中，粉體受熱後極易相互熔合(fusion)，使粉體粗大化，導致粒徑尺寸增加，圓球度也會因此降低，進而影響粉體之性能及應用範圍。The current spheroidization method of silica powder is mostly flame and fusion. The spheroidization process is: the powder to be spheroidized is fed into a high temperature flame of fuel and oxygen mixture, the surface of the powder is heated by the high temperature flame to its melting point temperature, and then the powder is rapidly cooled, so that the powder is in the cooling process The medium tends to be spherical due to surface tension and has the characteristics of amorphous powder. However, in the process of spheroidization, the powder is easily fused with each other after being heated, which makes the powder coarser, resulting in an increase in particle size and a decrease in sphericity, thereby affecting the performance and application of the powder. range.

本創作之目的是提供一種粉體圓球化設備，可以控制進料粉體通過粉體進料管路，並且控制高壓氣流推送該進料粉體，再於螺旋式混合輸送管中與管壁碰撞產生多重方向作用力，使得進料粉體更為微細以進入火焰位置。The purpose of this creation is to provide a powder spheroidization equipment, which can control the feed powder to pass through the powder feed pipeline, and control the high-pressure air flow to push the feed powder, and then in the spiral mixing conveying pipe and the pipe wall The collision produces multi-directional forces, which makes the feed powder finer to enter the flame position.

本創作為達成上述目的提供一種粉體圓球化設備，具有腔體、氣流輔助粉體混合分散進料裝置、螺旋式混合輸送管以及控制模組。腔體具有燃燒器、噴射冷卻氣流裝置、水冷底襯及收料輸送管。氣流輔助粉體混合分散進料裝置具有底座、底座上具有粉體進料器、粉體進料管路及氣體輸送管路。螺旋式混合輸送管具有進料輸送管，進料輸送管用以連結腔體，螺旋式混合輸送管連結底座。控制模組則控制進料粉體通過粉體進料器與粉體進料管路，並且控制氣體輸送管路之高壓氣流推送進料粉體，再經由螺旋式混合輸送管進入該燃燒器中。This creation provides a powder spheroidizing equipment for achieving the above-mentioned purpose, which has a cavity, an air-assisted powder mixing and dispersing feeding device, a spiral mixing conveying pipe, and a control module. The cavity has a burner, a jet cooling air flow device, a water-cooled bottom lining and a material receiving and conveying pipe. The airflow assisted powder mixing and dispersing feeding device has a base, and the base is provided with a powder feeder, a powder feeding pipeline and a gas conveying pipeline. The spiral mixing conveying pipe has a feeding conveying pipe, the feeding conveying pipe is used to connect the cavity, and the spiral mixing conveying pipe is connected to the base. The control module controls the incoming powder to pass through the powder feeder and the powder feeding pipeline, and controls the high-pressure air flow of the gas conveying pipeline to push the incoming powder into the burner through the spiral mixing conveying pipe .

與習知之粉體圓球化設備比較，本創作具有以下優點：提高原料粉體進入熱源之分散程度，以氣流式粉體預混進料設計，在粉體由底部送入頂部進料口之同時，即可結合氣流，透過特殊設計之渦流式輸送管進行充分混合及分散，使粉體可均勻分散進入火焰位置，避免粉體粗大化，達成細微化與圓球化之粉體製程技術，並可根據不同粉體密度，調控氣流流量及壓力，對應各式無機粉體，實現低成本、高效率、高泛用性之連續化生產可能。Compared with the conventional powder spheroidization equipment, this creation has the following advantages: it improves the dispersion degree of the raw material powder into the heat source, and adopts the air-flow type powder premixed feeding design, and the powder is fed from the bottom to the top inlet. At the same time, it can be combined with the air flow to fully mix and disperse through the specially designed vortex conveying pipe, so that the powder can be evenly dispersed into the flame position, avoiding the coarsening of the powder, and achieving the fineness and spheroidization of the powder system technology. It can also adjust the air flow and pressure according to different powder densities, corresponding to various inorganic powders, and realize the possibility of continuous production with low cost, high efficiency and high versatility.

本創作之製備高圓球度無機粉體的設備，專為焰熔法設計，其燃燒器使用丙烷及氧氣作為混合燃料，火焰最高溫度可達2000 ℃，並連接氣流輔助粉體混合分散進料裝置，改善高熱粉體團聚之問題，以避免粉體粗大化，再藉由位於腔體底部之噴射冷卻氣流裝置，輔助加熱後之高溫粉體推進至後端冷凝器且避免粉體附著於底部，達成細微化、圓球化與連續化之粉體製程技術。The equipment for preparing high sphericity inorganic powder is specially designed for flame melting method. Its burner uses propane and oxygen as mixed fuel, the maximum flame temperature can reach 2000 ℃, and it is connected with air flow to assist powder mixing and dispersing feed The device can improve the problem of high-heat powder agglomeration to avoid the coarsening of the powder. The cooling airflow device at the bottom of the cavity is used to assist the heated high-temperature powder to advance to the rear condenser and prevent the powder from adhering to the bottom , To achieve the powder system process technology of miniaturization, spheroidization and continuity.

第1圖顯示本創作之粉體圓球化設備之結構示意圖。如第1圖所示，粉體圓球化設備100，舉例具有一腔體10、一粉體收集過濾裝置20、一氣流輔助粉體混合分散進料裝置30、一螺旋式混合輸送管40以及一控制模組50。Figure 1 shows the structure diagram of the powder spheroidizing equipment of this creation. As shown in Figure 1, the powder spheroidizing equipment 100 has, for example, a cavity 10, a powder collection and filtration device 20, an air-assisted powder mixing and dispersing feeding device 30, a spiral mixing and conveying pipe 40, and One control module 50.

腔體10舉例具有一燃燒器12、一耐火材料內襯14、一噴射冷卻氣流裝置16、一水冷底襯18及一收料輸送管19。該收料輸送管19連結粉體收集過濾裝置20。該腔體10的直徑舉例為80至150 公分，該腔體的高度舉例為300 公分。該燃燒器12之溫度舉例為1800至2000℃。該耐火材料內襯14係環繞設置於該腔體10內。該噴射冷卻氣流裝置16與水冷底襯18則分別設置於該腔體10底部。The cavity 10 has a burner 12, a refractory lining 14, a jet cooling air flow device 16, a water-cooled bottom lining 18 and a receiving and conveying pipe 19, for example. The collecting and conveying pipe 19 is connected to the powder collecting and filtering device 20. The diameter of the cavity 10 is 80 to 150 cm, for example, and the height of the cavity 10 is 300 cm, for example. The temperature of the burner 12 is 1800 to 2000°C, for example. The refractory lining 14 is arranged around the cavity 10. The jet cooling airflow device 16 and the water-cooled bottom lining 18 are respectively arranged at the bottom of the cavity 10.

粉體收集過濾裝置20具有一冷凝器22、一收集過濾器24及一抽氣裝置26，該冷凝器22連結該收料輸送管19；粉體收集過濾裝置20用以冷卻及收集完成圓球化後之粉體。The powder collecting and filtering device 20 has a condenser 22, a collecting filter 24 and an air extraction device 26. The condenser 22 is connected to the receiving conveying pipe 19; the powder collecting and filtering device 20 is used for cooling and collecting the finished balls Powder after chemical treatment.

氣流輔助粉體混合分散進料裝置30，舉例具有一底座32且設置於該腔體10外部、而底座32上設置有一粉體進料器34、一粉體進料管路36及一氣體輸送管路38。螺旋式混合輸送管40具有一進料輸送管42，該進料輸送管42用以連結該腔體10，該螺旋式混合輸送管40則連結該底座32，且實際與氣體輸送管路38相接通，進料粉體將依序自粉體進料器34落下經粉體進料管路36、氣體輸送管路38而被推送到螺旋式混合輸送管40內，最後經進料輸送管42而進入腔體10中。The airflow-assisted powder mixing and dispersing feeding device 30, for example, has a base 32 and is arranged outside the cavity 10, and the base 32 is provided with a powder feeder 34, a powder feeding pipe 36 and a gas conveying device. Line 38. The spiral mixing conveying pipe 40 has a feeding conveying pipe 42 which is used to connect the cavity 10, and the spiral mixing conveying pipe 40 is connected to the base 32 and is actually connected to the gas conveying pipe 38. When connected, the feed powder will drop from the powder feeder 34 through the powder feed pipe 36 and the gas conveying pipe 38 in order, and then be pushed into the spiral mixing conveying pipe 40, and finally through the feeding conveying pipe 42 and enter the cavity 10.

控制模組50控制進料粉體自該粉體進料器34與該粉體進料管路36，並且控制該氣體輸送管路38之高壓氣流推送該進料粉體，再進入螺旋式混合輸送管40中與管壁碰撞產生多重方向作用力使得進料粉體在氣體中分散進入該燃燒器12之火焰位置。該粉體是二氧化矽或氧化鋁粉體，粉體粒徑在30微米以下。燃燒器12之燃料是丙烷，火焰是燃料及氧氣燃燒所產生。The control module 50 controls the powder feed from the powder feeder 34 and the powder feed pipe 36, and controls the high-pressure air flow of the gas delivery pipe 38 to push the feed powder, and then enter the spiral mixing The collision of the conveying pipe 40 with the pipe wall generates multi-directional forces so that the feed powder is dispersed in the gas and enters the flame position of the burner 12. The powder is silica or alumina powder, and the particle size of the powder is below 30 microns. The fuel of the burner 12 is propane, and the flame is produced by the combustion of fuel and oxygen.

第2圖顯示本創作之螺旋式混合輸送管之結構示意圖。螺旋式混合輸送管40為一螺旋狀之中空管體，其斷面舉例為圓形或其他形狀，其內徑D舉例為5至15 公分。該螺旋式混合輸送管40的螺旋間距L舉例為5至20 公分，螺旋角度S舉例為10至60 度，而長度則不予限制。螺旋式混合輸送管40用以使來自氣體輸送管路38之高壓氣體與進料粉體，能在管內多重方向地撞擊管壁，以使粉體顆粒更將細微。Figure 2 shows the structure diagram of the spiral mixing conveying pipe of this creation. The spiral mixing conveying pipe 40 is a spiral hollow pipe body, the cross-section of which is circular or other shapes, for example, and the inner diameter D is, for example, 5 to 15 cm. The spiral pitch L of the spiral mixing conveying pipe 40 is, for example, 5 to 20 cm, and the spiral angle S is, for example, 10 to 60 degrees, and the length is not limited. The spiral mixing conveying pipe 40 is used to make the high-pressure gas and the feed powder from the gas conveying pipeline 38 hit the pipe wall in multiple directions in the pipe, so that the powder particles are more fine.

粉體圓球化設備100更包括一高壓氣體鋼瓶60或外部氣源，並由控制模組50控制供應高壓氣體到氣體輸送管路38中，使粉體進料管路36產生負壓以推送落於管路中之進料粉體進入螺旋式混合輸送管40。高壓氣體鋼瓶60之高壓氣體可以是氧氣。The powder spheroidization equipment 100 further includes a high-pressure gas cylinder 60 or an external gas source, and is controlled by the control module 50 to supply high-pressure gas to the gas delivery pipeline 38, so that the powder feed pipeline 36 generates negative pressure to push The feed powder falling in the pipeline enters the spiral mixing conveying pipe 40. The high-pressure gas of the high-pressure gas cylinder 60 may be oxygen.

粉體圓球化設備100之作動方式是使用氣流輔助粉體混合分散進料裝置30，利用氣體輸送管路38之高壓氣流推送進料粉體進入腔體10，使粉體在輸送的過程內除了受到氣體高壓推力。也藉由與螺旋式混合輸送管40內壁碰撞產生多重方向作用力，提高粉體在氣體中之分散效果，形成均質化旋風流體。使進料粉體可均勻分散進入燃燒器12之火焰位置。藉由控制模組50 之人機介面可精確控制進料量及氣體流量，具操作便利性，強化混合分散能力，以降低粉體在高溫熱源發生熔合之情形。The operation of the powder spheroidization equipment 100 is to use the air-assisted powder mixing and dispersing feeding device 30, and the high-pressure air flow of the gas conveying pipe 38 is used to push the feed powder into the cavity 10, so that the powder is in the process of conveying. In addition to being pushed by the high pressure of the gas. Also, by colliding with the inner wall of the spiral mixing conveying pipe 40, a multi-directional force is generated, which improves the dispersion effect of the powder in the gas and forms a homogenized cyclone fluid. The feed powder can be evenly dispersed into the flame position of the burner 12. The man-machine interface of the control module 50 can accurately control the feed volume and the gas flow rate, which is convenient for operation and strengthens the mixing and dispersing ability to reduce the fusion of the powder at the high temperature heat source.

經高溫火焰圓球化完成之粉體再透過噴射冷卻氣流裝置16，將粉體推進至後端冷凝器22且避免粉體附著於腔體10底部。粉體經冷凝器22降溫，由1000℃以上降至 150℃以下。再透過粉體收集過濾裝置20收集產出粉體，使用氣流式粉體分級設備之收集過濾器24進行收料。收集過濾器24採用雙濾心設計並具有逆洗自潔功能，當其中一隻濾心堵塞時，可啟動逆洗清潔並切換另一隻進行過濾，以達成連續生產之功能。The powder that has been spheroidized by the high-temperature flame passes through the jet cooling airflow device 16 to push the powder to the rear condenser 22 and prevent the powder from adhering to the bottom of the cavity 10. The temperature of the powder is lowered by the condenser 22, from above 1000°C to below 150°C. The produced powder is collected through the powder collecting and filtering device 20, and the collecting filter 24 of the air-flow type powder grading equipment is used for collecting. The collection filter 24 adopts a double filter design and has a backwashing and self-cleaning function. When one filter is blocked, it can start backwashing and cleaning and switch the other to filter to achieve the function of continuous production.

100:粉體圓球化設備 10:腔體 12:燃燒器 14:耐火材料內襯 16:噴射冷卻氣流裝置 18:水冷底襯 19:收料輸送管 20:粉體收集過濾裝置 22:冷凝器 24:收集過濾器 26:抽氣裝置 30:氣流輔助粉體混合分散進料裝置 32:底座 34:粉體進料器 36:粉體進料管路 38:氣體輸送管路 40:螺旋式混合輸送管 42:進料輸送管 50:控制模組 60:高壓氣體鋼瓶 D:內徑 L:螺旋間距 S:螺旋角度 100: Powder spheroidization equipment 10: Cavity 12: Burner 14: Refractory lining 16: Jet cooling air flow device 18: Water-cooled bottom lining 19: Receiving conveying pipe 20: Powder collection and filtration device 22: Condenser 24: Collection filter 26: Exhaust device 30: Airflow assisted powder mixing and dispersing feeding device 32: Base 34: Powder feeder 36: Powder feed pipeline 38: Gas delivery pipeline 40: Spiral mixing conveying pipe 42: Feeding conveying pipe 50: control module 60: High-pressure gas cylinder D: inner diameter L: Spiral pitch S: helix angle

第1圖顯示本創作之粉體圓球化設備之結構示意圖。第2圖顯示本創作之螺旋式混合輸送管之結構示意圖。 Figure 1 shows the structure diagram of the powder spheroidizing equipment of this creation. Figure 2 shows the structure diagram of the spiral mixing conveying pipe of this creation.

100:粉體圓球化設備 100: Powder spheroidization equipment

10:腔體 10: Cavity

12:燃燒器 12: Burner

14:耐火材料內襯 14: Refractory lining

16:噴射冷卻氣流裝置 16: Jet cooling air flow device

18:水冷底襯 18: Water-cooled bottom lining

19:收料輸送管 19: Receiving conveying pipe

20:粉體收集過濾裝置 20: Powder collection and filtration device

22:冷凝器 22: Condenser

24:收集過濾器 24: Collection filter

26:抽氣裝置 26: Exhaust device

30:氣流輔助粉體混合分散進料裝置 30: Airflow assisted powder mixing and dispersing feeding device

32:底座 32: Base

34:粉體進料器 34: Powder feeder

36:粉體進料管路 36: Powder feed pipeline

38:氣體輸送管路 38: Gas delivery pipeline

40:螺旋式混合輸送管 40: Spiral mixing conveying pipe

42:進料輸送管 42: Feeding conveying pipe

50:控制模組 50: control module

60:高壓氣體鋼瓶 60: High-pressure gas cylinder

Claims

一種粉體圓球化設備，包括：一腔體，具有一燃燒器、一噴射冷卻氣流裝置、一水冷底襯及一收料輸送管；一氣流輔助粉體混合分散進料裝置，具有一粉體進料器、一粉體進料管路及一氣體輸送管路；一螺旋式混合輸送管，具有一進料輸送管，該進料輸送管連結該腔體，該螺旋式混合輸送管連結該氣體輸送管路；以及一控制模組，控制高壓氣體經該氣體輸送管路進入該螺旋式混合輸送管中。 A powder spheroidization equipment, including: A cavity with a burner, a jet cooling air flow device, a water-cooled bottom lining and a material receiving and conveying pipe; An airflow assisted powder mixing and dispersing feeding device, with a powder feeder, a powder feeding pipeline and a gas conveying pipeline; A spiral mixing conveying pipe with a feed conveying pipe connected to the cavity, and the spiral mixing conveying pipe connected to the gas conveying pipeline; and A control module controls the high-pressure gas to enter the spiral mixing conveying pipe through the gas conveying pipeline.

如請求項1所述之粉體圓球化設備，更包括一粉體收集過濾裝置，該粉體收集過濾裝置具有一冷凝器、一收集過濾器及一抽氣裝置，該冷凝器連結該收料輸送管。The powder spheroidization equipment according to claim 1, further comprising a powder collecting and filtering device, the powder collecting and filtering device has a condenser, a collecting filter and an air extraction device, and the condenser is connected to the collecting and filtering device. Material conveying pipe.

如請求項1所述之粉體圓球化設備，其中該粉體進料器、該粉體進料管路及該氣體輸送管路是設置於一底座上。The powder spheroidization equipment according to claim 1, wherein the powder feeder, the powder feed pipeline and the gas delivery pipeline are arranged on a base.

如請求項1所述之粉體圓球化設備，其中該高壓氣體是由一高壓氣體鋼瓶或一外部氣源所供應。The powder spheroidization equipment according to claim 1, wherein the high-pressure gas is supplied by a high-pressure gas cylinder or an external gas source.

如請求項1所述之粉體圓球化設備，其中該腔體更包括一耐火材料內襯環繞設置於該腔體內。The powder spheroidization equipment according to claim 1, wherein the cavity further includes a refractory lining disposed around the cavity.

如請求項1所述之粉體圓球化設備，其中該噴射冷卻氣流裝置與該水冷底襯分別設置於該腔體底部。The powder spheroidization equipment according to claim 1, wherein the jet cooling air flow device and the water-cooled bottom lining are respectively arranged at the bottom of the cavity.

如請求項1所述之粉體圓球化設備，其中該螺旋式混合輸送管為一螺旋狀之中空管體，其斷面為圓形。The powder spheroidization equipment according to claim 1, wherein the spiral mixing conveying pipe is a spiral hollow pipe with a circular cross section.