CN1081103C - Spiral-flow condensing equipment for prodn. of zinc powder - Google Patents
Spiral-flow condensing equipment for prodn. of zinc powder Download PDFInfo
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- CN1081103C CN1081103C CN94111127A CN94111127A CN1081103C CN 1081103 C CN1081103 C CN 1081103C CN 94111127 A CN94111127 A CN 94111127A CN 94111127 A CN94111127 A CN 94111127A CN 1081103 C CN1081103 C CN 1081103C
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- nitrogen
- cooling medium
- zinc powder
- zinc
- condensation
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Abstract
本发明涉及蒸发—冷凝法生产锌粉的专用设备。它由喷嘴和冷凝器构成。其特征在于：喷嘴41的循环冷却介质氮气分布箱1为一蜗壳体，其内沿为圆形，外沿呈阿基米德螺旋线形；氮气导流器2呈伞齿轮形结构；冷凝器42的冷凝结晶区设计为圆锥形，主体设计为圆筒形。实现了冷却介质氮气与锌蒸气的快速均匀混合，并迅速脱离冷凝结晶区，而无锌粉的滞溜及返混现象的发生，达到了生产颗粒细小，粒度分布均匀的锌粉的目的。
The invention relates to special equipment for producing zinc powder by evaporation-condensation method. It consists of a nozzle and a condenser. It is characterized in that: the circulating cooling medium nitrogen distribution box 1 of the nozzle 41 is a volute, the inner edge of which is circular, and the outer edge is in the shape of an Archimedes spiral; the nitrogen deflector 2 is in the shape of a bevel gear; the condenser The condensation and crystallization zone of 42 is designed to be conical, and the main body is designed to be cylindrical. Realize the rapid and uniform mixing of nitrogen and zinc vapor as the cooling medium, and quickly leave the condensation and crystallization area, without the occurrence of zinc powder stagnation and back-mixing, and achieve the purpose of producing zinc powder with fine particles and uniform particle size distribution.
Description
The invention belongs to metal dust and make the field, especially begin to make the special equipment of metal dust from gas material.
Fig. 7 has showed evaporation---condensation method is produced the equipment configuration of zinc powder technology, and the condensing unit that it uses is made of nozzle 13 and square condenser 14.Realize by the conversion of zinc fume at this to zinc particle.The structure of nitrogen nozzle 13 such as Fig. 8, shown in Figure 9: welding one or several cooling medium nitrogen jet pipe 22 on the columnar nitrogen distribution case 21, be set on the zinc fume conduit 23 (be shown in Figure 7 12), communicate with condenser 14 shown in Figure 7.The effect of condensing unit is from Fig. 7 as seen: vapourizing furnace or the reduction volatilization stove 11, metallic zinc be evaporated or material containing zinc in zinc be reduced volatilization; Through zinc fume conduit 12, enter condensing unit, in the condensation-crystallization district of condenser 14, be recycled and return nitrogen dilution, cooling formation zinc particle.This shows that the structure of condensing unit is the key factor that influences zinc powder particle size and distribution thereof.The zinc powder that generates in condensing unit, major part are deposited in the flue-dust retainer of condenser 14, and remainder is taken away by nitrogen, enter thereafter by heavy dirt cooler 15,16, rotoclone collector 17, bagroom 18, the cooling dust collecting system that nitrogen circulation blower fan 19 and corresponding duct coupling constitute.
In existing technology, because the circulating cooling medium nitrogen jet pipe 22 of condensing unit is a straight tube, the nitrogen that circulation is returned can only spray from several even single airduct simply, so that it is bad with the zinc fume mixed effect, can not realize rapidly it, the dilution of homogeneous, cooling, cause the zinc powder particle size of generation thick, be wide grade and distribute, from not waiting less than 1 micron to hundreds of microns.Therefore in addition, condenser 14 generally is designed to square, causes the dead angle in the condensation-crystallization district, makes the zinc powder of the generation crystal region that can not all speed away, and has part to be detained and the back-mixing generation, thereby further grow up, and causes zinc particle thick, and size distribution is irregular.Wish to get 2～3 microns of average grain diameters, narrow particle diameter distributes, and is applicable to the zinc powder product that steel anti-corrosive coating etc. is produced, and still needs product is sieved or air current classifying, causes that production procedure is long, efficient is low, cost is high.
The objective of the invention is to: solve evaporation---condensation method is produced in the zinc powder technology, quick, the even mixed problem of cooling medium nitrogen and zinc fume, make zinc fume be diluted hastily, cool off, tiny to reach the generation particle, the purpose of even-grained zinc powder is to satisfy the requirement of producing aspects such as steel anti-corrosive coating.
The present invention has manufactured and designed a kind of evaporation that is suitable for for achieving the above object---the cyclone condensing device of condensation method production zinc powder technology.This device is connected to an integral body by flange with bolt with condenser 42 by circulating cooling medium nitrogen nozzle 41 and constitutes, as shown in Figure 1 and Figure 2.Cooling medium nitrogen nozzle 41 in the cyclone condensing device, its structural representation as shown in Figure 3, Figure 4, its formation is a circulating cooling medium nitrogen air deflector 2 and bolt and the nitrogen distribution case 1 of interior pipe 5 by asbestos washer 6 places is connected to an integral body, is sleeved on the zinc fume conduit 3.This cyclone condensing device is characterised in that: circulating cooling medium nitrogen distribution case 1 is a volute body, and along being circular, the outer is spiral of Archimedes shape in it; Nitrogen air deflector 2 is bevel gear shape structure, and as Fig. 5, shown in Figure 6, each teeth groove is cooling medium nitrogen ejection passage, 5～10 ° of the equal disalignments of each passage; Between zinc fume conduit 3 and the circulating cooling medium nitrogen distribution spiral case 1 heat-insulation layer 4 is set; The condensation-crystallization district of condenser 42 is designed to taper shape, and body design is a cylindrical shape.
Cyclone condensing device of the present invention has overcome prior art in evaporation---and condensation method is produced the defective in the zinc powder technology, realized that cooling medium nitrogen evenly mixes with the quick of zinc fume, and hightail the condensation-crystallization district, and the retention and the air-teturning mixed phenomenon that do not have zinc powder take place, thereby it is tiny to have reached the production particle, the zinc powder of even particle size distribution has satisfied being directly used in the steel anti-corrosive coating material production.This significant effect is:
1. circulating cooling medium nitrogen distribution case 1 adopts A Jimi to follow the spirality Crucible shell body, makes the throughput unanimity of each the nitrogen ejection passage that enters circulating cooling medium nitrogen air deflector 2, has realized uniform mixing;
2. the nitrogen of circulating cooling medium nitrogen air deflector 2 ejection passage is taked eccentric the setting, output side velocity component when circulating cooling medium nitrogen is sprayed forward, cause strong eddy flow, assurance circulating cooling medium nitrogen mixes with zinc fume, not only even, and fast, carry heat rapidly, reduced the zinc blocking channel that condenses;
3. the condenser crystal region adopts conical structure, and condenser 42 main bodys adopt columnar structured, have guaranteed the realization of eddy flow, have overcome air turbulence, the defective that causes the delay of zinc powder dirt and carry zinc powder dirt air-flow back-mixing secretly;
4. between zinc fume conduit 3 and the nitrogen distribution spiral case 1 heat-insulation layer 4 is set, it has prevented zinc airsetting knot passage, has also solved the etching problem of zinc fume.
The zinc powder product granularity that cyclone condensing device of the present invention is produced is thin and adjustable, and narrow diameter distribution need not to do in addition sieve classification, can be directly used in the production of steel anti-corrosive coating, has shortened production procedure, has improved production efficiency, has reduced production cost.
Be further described below in conjunction with accompanying drawing:
Fig. 1 is an invention cyclone condensing device overall structure schematic diagram;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the nitrogen nozzle overall structure schematic diagram cutaway view of the cyclone condensing device of invention;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the structural representation cutaway view of nitrogen air deflector in the cyclone condensing device of invention;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is evaporation---condensation method is produced zinc powder technical equipment configuration schematic diagram;
Fig. 8 is existing condensing unit nitrogen nozzle structural representation cutaway view;
Fig. 9 is the right view of Fig. 8;
Accompanying drawing has been described cyclone condensing device overall structure of the present invention and feature structure and working condition thereof.
Its formation is that circulating cooling medium nitrogen air deflector 2 is an one with interior pipe 5 plug-in mountings, and bolt and circulating cooling medium nitrogen distribution volute body 1 by asbestos washer 6 places are connected to an integral body, are sleeved on the zinc fume conduit 3; Between zinc fume conduit 3 and the circulating cooling medium nitrogen distribution volute body 1 heat-insulation layer 4 is set, to reduce the heat loss of zinc fume the time by conduit 3; The interior edge of circulating cooling medium distribution volute body 1 is circular, and the outer is spiral yarn shaped for Archimedes follows, and the nitrogen amount unanimity that assurance enters cooling medium nitrogen air deflector 2 each duct is so that the spouting velocity homogeneous of per share cooling medium nitrogen; Circulating cooling medium nitrogen air deflector 2 is bevel gear shape structure, each teeth groove is nitrogen ejection passage, 5～10 ° of the equal disalignments of each passage, to guarantee the strong cyclonic action of cooling medium nitrogen miscarriage life of adjustments degree ejection, there are enough momentum to break up, dilute, cool off by the zinc fume that zinc fume conduit 3 enters the condensation-crystallization district; Nitrogen nozzle 41 and condenser 42 are connected as a single entity with bolt by flange, the condensation-crystallization district of condenser 42 is designed to taper shape, and body design is a cylindrical shape, airless motion dead angle, guarantee the realization of eddy flow, avoid the delay of zinc powder and carry the air-flow back-mixing of zinc powder dirt secretly.
The cyclone condensing device of being invented is in evaporation---and condensation method is produced in the zinc powder technology, residing technology position is identical with existing condensing unit, consult Fig. 7: whole system is the closed circuit circulatory system of sealing, and circulating cooling medium is an inert gas, the general nitrogen that adopts in the actual production.In the production, zinc ingot metal melts the zinc reduction volatilization in evaporation or the raw material in heating furnace 11, spray to crystal region through zinc fume conduit 3 with vapor form; The cooling medium of circulation is in return duct enters nitrogen distribution volute body 1, be circular motion, flow-guiding channel on cooling medium air deflector 2, spray with certain angle and speed, owing to adjust cyclonic action, the nitrogen that ejects meets with zinc fume by 3 ejections of zinc fume conduit, zinc fume is by rapidly towards rare and chilling, rapid condensation becomes fine zinc particle, has realized the mixing of quick homogeneous, has reached the purpose of producing tiny and uniform powder; Also because the nitrogen stream of band zinc powder dirt is eddy flow enters condensing unit and travel forward, thereby avoided the generation of back-mixing; The condensation-crystallization district of condensing unit is designed to taper shape, and body design is a cylindrical shape, with the realization of assurance nitrogen with zinc fume and zinc powder dirt mixing eddy flow, does not cause air turbulence.The cyclone condensing device that the present invention is used to produce zinc powder has overcome the deficiency of original device, realized that cooling medium nitrogen evenly mixes with the quick of zinc fume, and hightail the condensation-crystallization district, and the retention and the air-teturning mixed phenomenon that do not have zinc powder take place, it is tiny to have reached the production particle, the purpose of the zinc powder of even particle size distribution.The zinc powder that in condensing unit, generates, major part is deposited in the flue-dust retainer of condenser 41, remainder is taken away by nitrogen, enters by heavy dirt cooling 15,16, the cooling dust collecting system that rotoclone collector 17, cloth bag gatherer 18, nitrogen circulation blower fan 19 and corresponding duct coupling constitute.The cooling dust collecting system is except that capturing zinc powder, and also the heat that zinc fume is brought in the circulatory system all distributes, and normally carries out to guarantee to produce.Bagroom will all capture with the fine zinc fume that air-flow brings.Reduced to normal temperature from the nitrogen that bagroom comes out, entered circulation next time through blower fan 19.
The present invention implements producing 500T zinc powder commercial scale per year, the zinc powder particle size that produces thin, average grain diameter is 2.63 μ m, even particle size distribution accounts for more than 80% in 1～3 micrometer range, good sphericity does not need classification can be directly used in the steel anti-corrosive coating material production.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111127A CN1081103C (en) | 1994-08-23 | 1994-08-23 | Spiral-flow condensing equipment for prodn. of zinc powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111127A CN1081103C (en) | 1994-08-23 | 1994-08-23 | Spiral-flow condensing equipment for prodn. of zinc powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1117419A CN1117419A (en) | 1996-02-28 |
| CN1081103C true CN1081103C (en) | 2002-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94111127A Expired - Fee Related CN1081103C (en) | 1994-08-23 | 1994-08-23 | Spiral-flow condensing equipment for prodn. of zinc powder |
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| CN (1) | CN1081103C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178577B (en) * | 2015-05-05 | 2017-12-15 | 江苏宇通干燥工程有限公司 | Sublimate device and its method of work |
| CN111437787A (en) * | 2020-05-06 | 2020-07-24 | 浙江钦堂钙业股份有限公司 | Powder activating device |
| CN112481487B (en) * | 2020-12-09 | 2022-08-02 | 中冶南方工程技术有限公司 | Zinc-containing dust and sludge recycling method |
| CN112846207B (en) * | 2021-01-15 | 2023-04-28 | 昆明冶金研究院有限公司 | Preparation method of superfine active zinc powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945574A (en) * | 1972-07-24 | 1976-03-23 | Polnauer Frederick F | Dual orifice spray nozzle using two swirl chambers |
| US4793853A (en) * | 1988-02-09 | 1988-12-27 | Kale Sadashiv S | Apparatus and method for forming metal powders |
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1994
- 1994-08-23 CN CN94111127A patent/CN1081103C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945574A (en) * | 1972-07-24 | 1976-03-23 | Polnauer Frederick F | Dual orifice spray nozzle using two swirl chambers |
| US4793853A (en) * | 1988-02-09 | 1988-12-27 | Kale Sadashiv S | Apparatus and method for forming metal powders |
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| Publication number | Publication date |
|---|---|
| CN1117419A (en) | 1996-02-28 |
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