CN103638888B - Vertical high-temperature microwave device for preparing fluorescent powder - Google Patents
Vertical high-temperature microwave device for preparing fluorescent powder Download PDFInfo
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- CN103638888B CN103638888B CN201310699694.8A CN201310699694A CN103638888B CN 103638888 B CN103638888 B CN 103638888B CN 201310699694 A CN201310699694 A CN 201310699694A CN 103638888 B CN103638888 B CN 103638888B
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Abstract
The invention discloses a vertical high-temperature microwave device for preparing fluorescent powder. The vertical high-temperature microwave device consists of a closed box, a vertical high-temperature microwave oven, a vibrating feeder and a microwave generator, wherein the vertical high-temperature microwave oven comprises an oven body, a high-temperature microwave cavity, a spiral feeder and a heat-preserving layer; the high-temperature microwave cavity penetrates through central circular holes in upper and lower covers of the oven body, and is provided with a charging hole, a discharging hole, an air inlet, an air outlet and a square hole; the heat-preserving layer is arranged between the high-temperature microwave cavity and the oven body; the spiral feeder is positioned in a cylinder of the high-temperature microwave cavity; a spiral rod are is with an inner ring of a bearing; the spiral rod is connected with a motor-speed reducer; the microwave generator is positioned on the side surface of the vertical high-temperature microwave oven; a square waveguide opening of the microwave generator is positioned at the square hole of the high-temperature microwave cavity. The vertical high-temperature microwave device for preparing the fluorescent powder has the advantages that the device is simple in structure and easy to operate, and can realize continuous production; reaction gas is in countercurrent contact with granular materials in the vertical high-temperature microwave oven, the reaction is complete, and the remarkable technical effects of environment friendliness, energy conservation, quickness and high efficiency are achieved.
Description
Technical field
The invention belongs to rare-earth luminescent material technology of preparing, particularly a kind of vertical high-temperature microwave device for the preparation of fluorescent material.
Background technology
The high temperature sintering method of fluorescent material is the conventional method preparing rare-earth luminescent material, and major defect has: 1) burn till that production die is large, density is high, hardness is large, usually all needs ball milling; 2) firing temperature is higher, the reaction time is long, and product is long for cool time, and product, except principal crystalline phase, exists a small amount of mesophase spherule toward contact; 3) burning power of higher temperature consumes high.The high temperature microwave solid phase synthesis technique of fluorescent material is the interaction between applied microwave electromagnetic field and dielectric solid is the method that heat energy realizes the high―temperature nuclei of new material electromagnetic energy, have save time, space, save energy consumption, the series of advantages such as operating automation degree is high.Usual high temperature microwave burns till the high temperature microwave stove adopting bell-jar, and in order to realize continuous seepage, developed the high temperature microwave tunnel cave calcination equipment of horizontal, major defect is that reducing gas is insufficient with contacting of solid material, and gas consumption is large; Body of heater is unfavorable for insulation, and heat energy dissipates large, and material motion in the horizontal direction power of borrowing increases in transmission mechanism power consumption.In order to realize high efficiency continuous seepage, need to research and develop new high temperature microwave process for calcining.
Summary of the invention
The object of the invention is for above-mentioned technical Analysis and existing problems, a kind of vertical high-temperature microwave device for the preparation of fluorescent material is provided, this vertical high-temperature microwave device structure is simple, be easy to operation, can continuous prodution be realized; Reacting gas and granular material counter current contacting in vertical high-temperature micro-wave oven, sufficient reacting, has environmental protection, energy-conservation, remarkable technique effect fast and efficiently.
Technical scheme of the present invention:
A kind of vertical high-temperature microwave device for the preparation of fluorescent material, be made up of vertical high-temperature micro-wave oven, oscillating feeder and microwave generator, vertical high-temperature micro-wave oven comprises body of heater, high temperature microwave cavity, feeding screw and heat-insulation layer, body of heater is closed cylinder, and upper cover and the lower cover of cylinder are respectively equipped with the identical center hole of diameter; High temperature microwave cavity is closed pipe, the base plate of pipe is provided with center small sircle hole, high temperature microwave cavity also seals fixing through the center hole of furnace upper cover and lower cover, the upper and lower end side of high temperature microwave cavity is respectively equipped with charging aperture, gas outlet, air inlet and discharging opening, high temperature microwave cavity sidewall on be respectively equipped with the square hole mated with microwave generator waveguide square orifice; It is heat-insulation layer between high temperature microwave cavity and body of heater; Feeding screw is positioned at high temperature microwave cavity, comprise upper and lower bearing, screw rod and motor-decelerator, the bearing block of upper and lower bearing is fixed with the top board of high temperature microwave cavity and base plate respectively, screw rod is fixed with the inner ring of upper and lower bearing respectively, the center small sircle hole of screw rod lower end hermetically passing high temperature microwave well floor is connected with motor-decelerator, and the circumferential outer edge of screw rod is slided with high temperature microwave cavity inner wall and connected; Oscillating feeder is positioned at the top of charging aperture; Microwave generator is arranged at the side of vertical high-temperature micro-wave oven, and the waveguide square orifice of microwave generator is positioned the square hole place of high temperature microwave cavity through furnace body wall and heat-insulation layer.
Working procedure of the present invention:
Granular material through oscillating feeder continuous and quantitative by charging aperture to charging in high temperature microwave cavity, material is moved down by screw rod; The reacting gas mixed by nitrogen and hydrogen is entered by air inlet, is discharged by gas outlet; The microwave produced by microwave generator makes material at high temperature sinter and obtains fluorescent material.
Advantage of the present invention is: this vertical high-temperature microwave device structure is simple, be easy to operation, can realize continuous prodution; Reacting gas and granular material counter current contacting in vertical high-temperature micro-wave oven, sufficient reacting, has environmental protection, energy-conservation, remarkable technique effect fast and efficiently.
[accompanying drawing explanation]
Fig. 1 is the structural representation of this vertical high-temperature microwave device.
In figure: 1. vertical high-temperature micro-wave oven 2. oscillating feeder 3. microwave generator 4. body of heater
5. high temperature microwave cavity 6. feeding screw 7. heat-insulation layer 8. charging aperture 9. gas outlet 10. air inlet 11. discharging opening 12. square hole 13. bearing 14. screw rod 15. motors-decelerator
[detailed description of the invention]
Following instance is descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment:
A kind of vertical high-temperature microwave device for the preparation of fluorescent material, be made up of vertical high-temperature micro-wave oven 1, oscillating feeder 2 and microwave generator 3, vertical high-temperature micro-wave oven 1 comprises body of heater 4, high temperature microwave cavity 5, feeding screw 6 and heat-insulation layer 7, body of heater 4 is closed cylinder, and upper cover and the lower cover of cylinder are respectively equipped with the identical center hole of diameter; High temperature microwave cavity 5 is closed pipe, the base plate of pipe is provided with center small sircle hole, high temperature microwave cavity 5 also seals fixing through the center hole of body of heater 4 upper cover and lower cover, the upper and lower end side of high temperature microwave cavity 5 is respectively equipped with charging aperture 8, gas outlet 9, air inlet 10 and discharging opening 11, high temperature microwave cavity 5 sidewall on uniform four square holes 12 mated with microwave generator 3 waveguide square orifice; It is heat-insulation layer 7 between high temperature microwave cavity 5 and body of heater 4; Feeding screw 6 is positioned at high temperature microwave cavity 5, comprise upper and lower bearing 13, screw rod 14 and motor-decelerator 15, the bearing block of upper and lower bearing 13 is fixed with the top board of high temperature microwave cavity 5 and base plate respectively, screw rod 14 is fixed with the inner ring of upper and lower bearing 13 respectively, the center small sircle hole of screw rod 14 lower end hermetically passing high temperature microwave cavity 5 base plate is connected with motor-decelerator 15, and the circumferential outer edge of screw rod 14 is slided with high temperature microwave cavity 5 inwall and connected; Oscillating feeder 2 is positioned at the top of charging aperture 8; Microwave generator 3 is arranged at the side of vertical high-temperature micro-wave oven 1, and the waveguide square orifice of microwave generator 3 is positioned square hole 12 place of high temperature microwave cavity 5 through body of heater 4 wall and heat-insulation layer 7.
In this embodiment, the internal diameter of vertical high-temperature micro-wave oven is 70 ㎝, wall thickness is 0.3 ㎝; High temperature microwave cavity is iron pipe, and its internal diameter is 10 ㎝, wall thickness is 0.5 ㎝, highly for 4m; The HMG-2100 microwave generator that microwave generator adopts four Newmans and auspicious Microwave Corporation to produce; The rotating speed of screw rod is 0.07r/min; Insulation material is jacket crown 1500 ceramic beaverboard of Shanghai jacket crown Refractory Co., ltd.
This vertical high-temperature microwave device prepares the technological parameter of fluorescent material: raw material is AMgSi
2o
8: Eu
2+, Mn
2+(A=Ca, Sr, Ba), particle diameter are 5-15 μm; Reacting gas is the gaseous mixture of the nitrogen of volume ratio 95:5 and hydrogen, charge flow rate is 2L/min; The frequency of microwave source is 2.45GHz; Reaction temperature is 1300 DEG C, the reaction time is 7h.
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (1)
1. a vertical high-temperature microwave device is for the preparation of the application of fluorescent material, it is characterized in that: described vertical high-temperature microwave device is made up of vertical high-temperature micro-wave oven, oscillating feeder and microwave generator, vertical high-temperature micro-wave oven comprises body of heater, high temperature microwave cavity, feeding screw and heat-insulation layer, body of heater is closed cylinder, and upper cover and the lower cover of cylinder are respectively equipped with the identical center hole of diameter; High temperature microwave cavity is closed pipe, the base plate of pipe is provided with center small sircle hole, high temperature microwave cavity also seals fixing through the center hole of furnace upper cover and lower cover, the upper side of high temperature microwave cavity is provided with charging aperture, gas outlet, lower end side is provided with air inlet and discharging opening, high temperature microwave cavity sidewall on be respectively equipped with the square hole mated with microwave generator waveguide square orifice; It is heat-insulation layer between high temperature microwave cavity and body of heater; Feeding screw is positioned at high temperature microwave cavity, comprise upper and lower bearing, screw rod and motor-decelerator, the bearing block of upper and lower bearing is fixed with the top board of high temperature microwave cavity and base plate respectively, screw rod is fixed with the inner ring of upper and lower bearing respectively, the center small sircle hole of screw rod lower end hermetically passing high temperature microwave well floor is connected with motor-decelerator, and the circumferential outer edge of screw rod is slided with high temperature microwave cavity inner wall and connected; Oscillating feeder is positioned at the top of charging aperture; Microwave generator is arranged at the side of vertical high-temperature micro-wave oven, and the waveguide square orifice of microwave generator is positioned the square hole place of high temperature microwave cavity through furnace body wall and heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699694.8A CN103638888B (en) | 2013-12-19 | 2013-12-19 | Vertical high-temperature microwave device for preparing fluorescent powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699694.8A CN103638888B (en) | 2013-12-19 | 2013-12-19 | Vertical high-temperature microwave device for preparing fluorescent powder |
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| Publication Number | Publication Date |
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| CN103638888A CN103638888A (en) | 2014-03-19 |
| CN103638888B true CN103638888B (en) | 2015-05-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108168306A (en) * | 2017-12-18 | 2018-06-15 | 重庆中色新材料有限公司 | A kind of heating furnace |
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|---|---|---|---|---|
| US5946816A (en) * | 1998-03-09 | 1999-09-07 | Lockheed Martin Energy Systems, Inc. | Continuous microwave regeneration apparatus for absorption media |
| CN201058859Y (en) * | 2006-12-18 | 2008-05-14 | 天津理工大学 | Microwave firing device for rare earth fluorescent powder material |
| CN201252654Y (en) * | 2008-04-15 | 2009-06-03 | 上海鸿泽企业发展有限公司 | Spiral conveying and agitating type microwave heating device |
| CN201634625U (en) * | 2009-12-15 | 2010-11-17 | 成都纽曼和瑞微波技术有限公司 | Microwave low-temperature refuse pyrolysis device |
| WO2011010763A1 (en) * | 2009-07-24 | 2011-01-27 | Kim Sang Hyeog | Rapid drying apparatus for processing a large amount of sludge, and rapid drying method of sludge thereby |
| CN102305541A (en) * | 2011-08-19 | 2012-01-04 | 长沙隆泰微波热工有限公司 | Sintering furnace formed by combining microwaves and heat source |
| CN102305524A (en) * | 2011-07-15 | 2012-01-04 | 东华大学 | Minitype device and method for processing kitchen garbage |
| CN102393132A (en) * | 2011-11-14 | 2012-03-28 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
| CN202329027U (en) * | 2011-11-14 | 2012-07-11 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
-
2013
- 2013-12-19 CN CN201310699694.8A patent/CN103638888B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5946816A (en) * | 1998-03-09 | 1999-09-07 | Lockheed Martin Energy Systems, Inc. | Continuous microwave regeneration apparatus for absorption media |
| CN201058859Y (en) * | 2006-12-18 | 2008-05-14 | 天津理工大学 | Microwave firing device for rare earth fluorescent powder material |
| CN201252654Y (en) * | 2008-04-15 | 2009-06-03 | 上海鸿泽企业发展有限公司 | Spiral conveying and agitating type microwave heating device |
| WO2011010763A1 (en) * | 2009-07-24 | 2011-01-27 | Kim Sang Hyeog | Rapid drying apparatus for processing a large amount of sludge, and rapid drying method of sludge thereby |
| CN201634625U (en) * | 2009-12-15 | 2010-11-17 | 成都纽曼和瑞微波技术有限公司 | Microwave low-temperature refuse pyrolysis device |
| CN102305524A (en) * | 2011-07-15 | 2012-01-04 | 东华大学 | Minitype device and method for processing kitchen garbage |
| CN102305541A (en) * | 2011-08-19 | 2012-01-04 | 长沙隆泰微波热工有限公司 | Sintering furnace formed by combining microwaves and heat source |
| CN102393132A (en) * | 2011-11-14 | 2012-03-28 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
| CN202329027U (en) * | 2011-11-14 | 2012-07-11 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
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