CN104436723B - A kind of dry gentle powder integral process - Google Patents
A kind of dry gentle powder integral process Download PDFInfo
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- CN104436723B CN104436723B CN201410716208.3A CN201410716208A CN104436723B CN 104436723 B CN104436723 B CN 104436723B CN 201410716208 A CN201410716208 A CN 201410716208A CN 104436723 B CN104436723 B CN 104436723B
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Abstract
The invention discloses a kind of dry gentle powder integral process, particularly directly suspension slurry is prepared into the technique of micron order product, belong to spraying and be dried and crushing technology field; Technique comprises following steps: (a) regulating target product slurry to mass concentration is 10%-30%; (b) slurry being delivered to aperture is that the distributor of 6mm-10mm carries out homogenizing, after homogenizing, be mixed into Compressed Gas the nozzle formation slurry mist that aperture is 4mm-6mm again, the feed pressure of described slurry is not less than 0.5MPa, and the admission pressure of described Compressed Gas is not less than 0.5MPa; (c) slurry mist is dried in drying tower; (d) the dried powder of collection drying tower afterbody; Dry gentle powder integral process of the present invention, compressed air forms supersonic airstream atomization slip after nozzle, raw material suspension slurry directly can be prepared into product powder, overcome the shortcoming that prior art slurries must just can obtain by gas powder product powder after super-dry, effectively improve mobility and the dispersed index of product, can directly slurry be prepared into micron-sized powder and controllability is high by this technique.
Description
Technical field
The present invention relates to a kind of dry gentle powder integral process, especially a kind of method that directly suspension slurry is prepared into micron order product, belongs to spraying and is dried and crushing technology field.
Background technology
By chemical precipitation method, the diameter of solid content in the slurry of target powder is prepared into the even maturation of technology of Nano grade of micron.
Spraying is dried centrifugal drying and pressure drying, the product cut size D50 of centrifugal spray drying between 30-40 micron, the particle diameter D50 of pressure spray dryer product between 15-70 micron, two kinds of spray-dired products because of particle diameter thicker, although mobility is better, bad dispersibility. For further preparing the more powder product of fine grain, present stage is all to complete by dry gentle powder two steps, causes mass energy consumption, manually, packaging, the cost of overhaul remain high, although product cut size D50 is controlled at 5-9 micron, product poor fluidity, dispersed bad.
Realize dry gentle powder integral process and prepare the powder of particle diameter, difficult point is: the spray pattern of (1) shower nozzle wants to realize the rapid draing of spraying, do not affect the particle diameter that forms solid phase product because of the dry time, in (2) spraying, the particle diameter of solid phase itself wants to meet the requirement of product.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, a kind of dry gentle powder integral process is provided, raw material suspension slurry directly can be prepared into product powder by this technique, overcome the shortcoming that prior art slurries must just can obtain by gas powder product powder after super-dry, to reduce the production cost of powder and equipment investment, maintenance cost, solve the agglomeration traits between traditional centrifugal drying and pressure drying technique powder simultaneously, effectively improve mobility and the dispersed index of product.
The technical solution used in the present invention is as follows:
A kind of dry gentle powder integral process, is characterized in that: comprise following steps:
(a) regulating target product slurry to mass concentration is 10%-30%;
(b) slurry being delivered to aperture is that the distributor of 6mm-10mm carries out homogenizing, after homogenizing, be mixed into Compressed Gas the nozzle formation slurry mist that aperture is 4mm-6mm again, the feed pressure of described slurry is not less than 0.5MPa, and the admission pressure of described Compressed Gas is not less than 0.5MPa;
(c) slurry mist is dried in drying tower, and described drying tower inducer temperature is 220 DEG C-320 DEG C, and outlet temperature is not less than 110 DEG C;
(d) the dried powder of collection drying tower afterbody.
Dry gentle powder integral process of the present invention, by regulating applicable slurry concentration, on spray effect and process economy, be balanced, and creationary slurry is undertaken spraying after homogenizing by distributor again, by the design of distributor aperture and nozzle bore, the design of feed and supply gas pressure, compressed air forms supersonic airstream atomization slip after nozzle, the slurry mist of ejection can be dried fast, and by drying tower inlet temperature and outlet temperature design, solve the dry problem of powder, above-mentioned technical measures have effectively solved the agglomeration traits between powder, make it possible to produce satisfactory powder, and than traditional centrifugal drying and pressure drying technique, this technique products obtained therefrom has advantages of good fluidity and good dispersion, and production technology is simple, equipment investment is low and running is stable, effectively reduce the production cost of powder, making by this technique can be by gentle slurry convection drying powder to micron level.
Further, in described step (a), regulating target product slurry to mass concentration is 14%-18%. In this concentration range, have good homogenizing and atomization index, and economy is better.
Further, in described step (b), it is that the distributor of 8mm carries out homogenizing that slurry is delivered to aperture, after homogenizing, be mixed and fed into Compressed Gas the nozzle formation slurry mist that aperture is 5.5mm again, the feed pressure of described slurry is 0.5MPa-0.8MPa, and the admission pressure of Compressed Gas is 0.5MPa-0.8MPa. Can produce the just gentle powder of slurry convection drying by this technique and, to 5-9 micron level, there is more controllability, and product has more mobility and dispersiveness.
Further, in described step (c), described drying tower adopts High Temperature Gas tangential admission dry, and inducer temperature is 280 DEG C-300 DEG C, and outlet section temperature is 110 DEG C-130 DEG C. It makes air be screw type decline in tower body inside tangentially to enter high temperature, has strengthened on the one hand the mixing of slurry mist and thermal current, has strengthened heat exchange evaporation, has extended on the other hand slurry mist solid phase in the time of staying of tower body inside, obtains better drying effect.
Further, the internal diameter of described drying tower tower body is 3m-4m, tower height 8m-12m. The drying tower tower body of this parameter has preferably drying capacity, and can optimize to a certain extent the reunion between powder.
Dry gentle powder integral process of the present invention, described step (b) is carried out in shower nozzle, described shower nozzle comprises the head body of hollow cavity structure, the cavity of described head body is separated into feed cavity and hybrid chamber by dispersion plate, the dispersion hole that to be provided with the aperture that is evenly arranged on described dispersion plate be 6mm-10mm, in head body, be provided with charging aperture, air inlet and nozzle, described charging aperture is arranged in feed cavity, described air inlet is arranged on hybrid chamber, described nozzle is arranged at the end of hybrid chamber, and the spray eye aperture of nozzle is 4mm-6mm.
The shower nozzle of dry gentle powder integral process of the present invention, its structure has realized independently entering of slurry and gas, and under feed state with pressure, it is solid that slurry is further realized slurry by the dispersion hole on dispersion plate, liquid phase is even dispersion all, particularly inhomogeneous solid phase all even dispersions again, slurry after dispersion enters in hybrid chamber again and mixes the ejection of merga pass nozzle with the gas of high pressure, it is solid that this nozzle structure has not only solved traditional sprinkler heads, the dispersion difficult problem of liquid two-phase slurry in shower nozzle, simultaneously relatively independent charging, the dispersion hole that air intake structure is aided with multiple spot distribution has realized gas, liquid, Gu three-phase mixes uniformly at hybrid chamber inner height, compressed air forms supersonic airstream atomization slip after nozzle, make the material of ejection there is quite high fogging degree and solid phase particle diameter is even, being convenient to moisture in next step evaporation process evaporates fast, effectively improve the particle diameter index of product, thereby it is integrated to be conducive to realize dry gentle powder craft.
Further, the outlet of described nozzle is tapered structure, and its cone angle is 70 °-80 °. The jet expansion of tapered structure has not only improved the atomization ability of hydrojet, because this operating pressure at sprinkler is higher, the jet expansion of tapered structure also helps the wearing and tearing that reduce nozzle, the said structure parameter of nozzle is conducive to further improve atomization and the solid phase dispersion degree of nozzle, improves drying efficiency and product quality.
Further, the diameter of the cavity of described hybrid chamber is 80mm-120mm, and length is 150mm-250mm. This design of hybrid chamber makes slurries and gas obtain best mixing and pulverizing state, is conducive to the raising of product quality.
Dry gentle powder integral process of the present invention, in described step (d), is also further included in before dry powder is collected and carries out classification.
Further, in described step (d), adopt air classifier to carry out classification. The preferred gas flow sizing machine that adopts.
Dry gentle powder integral process of the present invention, in step (a), contains dispersant in described slurry. The solid, liquid two-phase that dispersant is conducive to slurry forms homogeneous mixture.
Shower nozzle of the present invention is installed on dry gentle powder integral process device, and described dry gentle powder integral process device comprises drying tower, shower nozzle, slurry feeding mechanism and compressed air supply system; Described shower nozzle is arranged on the centre position of drying tower inner top, described slurry feeding mechanism and compressed air supply system are positioned at drying tower outside, described slurry feeding mechanism is communicated with the charging aperture of shower nozzle, and described compressed air supply system is communicated with the air inlet of shower nozzle.
Further, be also provided with purgative gas import on the hybrid chamber of described shower nozzle, described purgative gas import is communicated with compressed air supply system. Purgative gas import is communicated with compressed air supply system, can save independent purgative gas import feeder and drop into.
Further, described purgative gas import and the tangent setting of hybrid chamber.
Described purgative gas import can purge shower nozzle inside before parking, prevent that the slurry being detained is by cavity and nozzle blockage, tangently be arranged so that the high-pressure wash gas entering flows into along cavity wall of cup tangential screw shape, better realize purging and the cleaning of cavity inner wall, this design simultaneously can further reduce the impact of purgative gas import on cavity gas, liquid, solid phase mixed process.
The top of described drying tower tower body is provided with hot blast import, and the bottom of tower body is provided with powder gathering-device. Described hot blast import and the tangent setting of tower body, described powder gathering-device is cyclone separator or sack cleaner, or the tandem compound of cyclone separator and sack cleaner.
Described slurry feeding mechanism is slurry pressure tank, and described compressed air supply system is compressed air cylinder.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
Described dry gentle powder integral process, compressed air forms supersonic airstream atomization slip after nozzle, raw material suspension slurry directly can be prepared into product powder by this technique, overcome the shortcoming that prior art slurries must just can obtain by gas powder product powder after super-dry, to reduce production cost and the equipment investment of powder, maintenance cost, solve the agglomeration traits between traditional centrifugal drying and pressure drying technique powder simultaneously, effectively improve mobility and the dispersed index of product, can directly slurry be prepared into micron-sized powder by this technique, and controllability is high.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is dry gentle powder integral process installation drawing of the present invention;
Fig. 2 is the nozzle structure schematic diagram of dry gentle powder integral process device of the present invention;
Fig. 3 is the nozzle arrangements schematic diagram of Fig. 2 shower nozzle of the present invention.
Mark in figure: 1-drying tower, the import of 11-hot blast, 12-powder gathering-device, 2-shower nozzle, 21-head body, 22-dispersion plate, 23-feed cavity, 24-hybrid chamber, 25-dispersion hole, 26-charging aperture, 27-air inlet, 28-nozzle, the import of 29-purgative gas, 210-outlet, 211-spray eye, 3-slurry feeding mechanism, 4-compressed air supply system.
Detailed description of the invention
Disclosed all features in this description, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this description (comprising any accessory claim, summary), unless narration especially all can be replaced by other equivalences or the alternative features with similar object. ,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
One of the present invention is dried gentle powder integral process, is undertaken by following steps:
(a) regulating target product slurry to mass concentration is 10%-30%;
(b) slurry being delivered to aperture is that the distributor of 6mm-10mm carries out homogenizing, after homogenizing, be mixed into Compressed Gas the nozzle formation slurry mist that aperture is 4mm-6mm again, the feed pressure of described slurry is not less than 0.5MPa, and the admission pressure of described Compressed Gas is not less than 0.5MPa;
(c) slurry mist is dried in drying tower, and described drying tower inducer temperature is 220 DEG C-320 DEG C, and outlet temperature is not less than 110 DEG C;
(d) the dried powder of collection drying tower afterbody.
For improving target product slurry dispersive property, in slurry, add the dispersant of compatibility.
Dry gentle powder integral process of the present invention, in its slurry products slurry, the particle diameter of solid content is not more than the particle diameter of the target powder of described preparation, in the present embodiment, is not more than 3 microns as example taking solid content DN50 particle diameter in slurry.
Dry gentle powder integral process device of the present invention, its structure as shown in Figure 1, comprise drying tower 1, shower nozzle 2, slurry feeding mechanism 3 and compressed air supply system 4, described shower nozzle 2 is arranged on the centre position of drying tower 1 inner top, described slurry feeding mechanism 3 and compressed air supply system 4 are positioned at drying tower outside, and described slurry feeding mechanism 3 and compressed air supply system 4 are communicated with shower nozzle 2.
The top of described drying tower 1 tower body is provided with the hot blast import 11 of tangent air inlet, the bottom of tower body is provided with powder gathering-device 12, the internal diameter of tower body is 3m-4m, tower height 8m-12m, powder gathering-device 12 is cyclone separator or sack cleaner, or the tandem compound of cyclone separator and sack cleaner.
The 3 slurry pressure tanks designs of described slurry feeding mechanism also provide the mode feed of pressure with compressed air, described slurry pressure tank is provided with slurry import and compressed air inlet, and compressed air supply system 4 carries out air feed for compressed air cylinder.
Shower nozzle 2 structures of the present invention as shown in Figure 2, comprise the head body 21 of hollow cavity structure, the cavity of described head body 21 is separated into feed cavity 23 and hybrid chamber 24 by dispersion plate 22, on described dispersion plate 22, be provided with the dispersion hole 25 being evenly arranged, in head body 21, be provided with charging aperture 26, air inlet 27 and nozzle 28, described charging aperture 26 is arranged in feed cavity 23, and described air inlet 27 is arranged on hybrid chamber 24, and described nozzle 28 is arranged at the end of hybrid chamber 24. Described slurry feeding mechanism 3 is communicated with the charging aperture 26 of shower nozzle 2, and described compressed air supply system 4 is communicated with the air inlet 27 of shower nozzle 2.
On described hybrid chamber 24, be also provided with purgative gas import 29, described purgative gas import 29 and the tangent setting of hybrid chamber 24, purgative gas import 29 is communicated with compressed air supply system 4.
In the present embodiment, the aperture of described dispersion hole 25 is 6mm-10mm, is preferably 8mm, and dispersion hole 25 on dispersion plate 22, arrange or arrange in concentric circles mode uniformly by matrix arrangements, parallel misalignment. The diameter of described head body 21 cavitys is 80mm-120mm, and whole cavity length is 250mm-350mm, and the length of hybrid chamber 24 is 150mm-250mm.
In the present embodiment, as shown in Figure 3, the outlet 210 of described nozzle 28 is tapered structure in the structural representation of nozzle 28, and its cone angle is 70 °-80 °, is preferably 75 °; The spray eye 211 aperture b of nozzle 28 are 4mm-6mm, are preferably 5.5mm; Described hybrid chamber 24 ends are provided with 4-8 nozzle 28 along even circumferential, are preferably 6, and the axle center angle of the axle center of nozzle 28 and shower nozzle is acute angle.
Embodiment 1
(a) regulating target product slurry to mass concentration is 10%;
(b) slurry being delivered to aperture is that the distributor of 6mm carries out homogenizing, and after homogenizing, being mixed into aperture again with Compressed Gas is that the nozzle of 4mm forms slurry mist, and the feed pressure of described slurry is 0.5MPa, and the admission pressure of described Compressed Gas is 0.5MPa;
(c) slurry mist is dried in drying tower, and regulating described drying tower inducer temperature by spray amount and drying tower intake is 220 DEG C-230 DEG C, and outlet temperature is 110 DEG C-120 DEG C;
(d) the dried powder of collection drying tower afterbody.
The present embodiment completes in described dry gentle powder integral process device.
The aperture of described shower nozzle dispersion hole 25 is 6mm, dispersion hole 25 is uniform matrix arrangements on dispersion plate 22, the diameter of described head body 21 cavitys is 80mm, whole cavity length is 250mm, the length of hybrid chamber 24 is 150mm, and as shown in Figure 3, its outlet 210 is tapered structure in the structural representation of nozzle 28, its cone angle is 70 °, and spray eye 211 aperture b are 4mm; Described hybrid chamber 24 ends are provided with 4 nozzles 28 along even circumferential, and the axle center angle of the axle center of nozzle 28 and shower nozzle is acute angle setting.
The internal diameter of described drying tower 1 tower body is 3m, tower height 8m.
The present embodiment is produced with active calcium phosphate, and in its slurry, solid content D50 particle diameter is 3 microns, and the product powder of producing after testing its D50 particle diameter is 5-9 micron, and the liquidity scale adopts fixing cone method to measure, and its angle of repose is 30 degree, 1 ton of day output.
Embodiment 2
(a) regulating target product slurry to mass concentration is 14%;
(b) slurry being delivered to aperture is that the distributor of 8mm carries out homogenizing, and after homogenizing, being mixed into aperture again with Compressed Gas is that the nozzle of 5.5mm forms slurry mist, and the feed pressure of described slurry is 0.5MPa, and the admission pressure of described Compressed Gas is 0.5MPa;
(c) slurry mist is dried in drying tower, and regulating described drying tower inducer temperature by spray amount and drying tower intake is 280 DEG C-290 DEG C, and outlet temperature is 110 DEG C-120 DEG C;
(d) adopt gas flow sizing machine to carry out classification to powder, grader is reported as 2000r/min, collects the dried powder of drying tower afterbody.
The present embodiment completes in described dry gentle powder integral process device.
The aperture of described shower nozzle dispersion hole 25 is 8mm, dispersion hole 25 parallel misalignment on dispersion plate 22 is arranged, the diameter of described head body 21 cavitys is 100mm, whole cavity length is 300mm, the length of hybrid chamber 24 is 200mm, and as shown in Figure 3, its outlet 210 is tapered structure in the structural representation of nozzle 28, its cone angle is 75 °, and spray eye 211 aperture b are 5.5mm; Described hybrid chamber 24 ends are provided with 6 nozzles 28 along even circumferential, and the axle center angle of the axle center of nozzle 28 and shower nozzle is acute angle.
The internal diameter of described tower body is 3.5m, tower height 10m.
The present embodiment is produced with active calcium phosphate slurries, in its slurry, solid content D50 particle diameter is 100 nanometers, and the product powder of producing after testing its D50 particle diameter is 5-9 micron, and the liquidity scale adopts fixing cone method to measure, its angle of repose is 35 degree, 1.5 tons of day outputs.
Embodiment 3
(a) regulating target product slurry to mass concentration is 18%;
(b) slurry being delivered to aperture is that the distributor of 8mm carries out homogenizing, and after homogenizing, being mixed into aperture again with Compressed Gas is that the nozzle of 5.5mm forms slurry mist, and the feed pressure of described slurry is 0.8MPa, and the admission pressure of described Compressed Gas is 0.8MPa;
(c) slurry mist is dried in drying tower, and regulating described drying tower inducer temperature by spray amount and drying tower intake is 290 DEG C-300 DEG C, and outlet temperature is 120 DEG C-130 DEG C;
(d) adopt gas flow sizing machine to carry out classification to powder, grader is reported as 2000r/min, collects the dried powder of drying tower afterbody.
The present embodiment completes in described dry gentle powder integral process device.
The aperture of described shower nozzle dispersion hole 25 is 8mm, dispersion hole 25 parallel misalignment on dispersion plate 22 is arranged, the diameter of described head body 21 cavitys is 100mm, whole cavity length is 300mm, the length of hybrid chamber 24 is 200mm, and as shown in Figure 3, its outlet 210 is tapered structure in the structural representation of nozzle 28, its cone angle is 75 °, and spray eye 211 aperture b are 5.5mm; Described hybrid chamber 24 ends are provided with 6 nozzles 28 along even circumferential, and the axle center angle of the axle center of nozzle 28 and shower nozzle is acute angle.
The internal diameter of described tower body is 3.5m, tower height 10m.
The present embodiment is produced with active calcium phosphate slurries, in its slurry, solid content D50 particle diameter is 200 nanometers, and the product powder of producing after testing its D50 particle diameter is 5-9 micron, and the liquidity scale adopts fixing cone method to measure, its angle of repose is 42 degree, 2.1 tons of day outputs.
Embodiment 4
(a) regulating target product slurry to mass concentration is 30%;
(b) slurry being delivered to aperture is that the distributor of 10mm carries out homogenizing, and after homogenizing, being mixed into aperture again with Compressed Gas is that the nozzle of 6mm forms slurry mist, and the feed pressure of described slurry is 0.6MPa, and the admission pressure of described Compressed Gas is 0.6MPa;
(c) slurry mist is dried in drying tower, and regulating described drying tower inducer temperature by spray amount and drying tower intake is 310 DEG C-320 DEG C, and outlet temperature is 120 DEG C-130 DEG C;
(d) the dried powder of collection drying tower afterbody.
The present embodiment completes in described dry gentle powder integral process device.
The aperture of described shower nozzle dispersion hole 25 is 10mm, dispersion hole 25 concentric circles mode on dispersion plate 22 is arranged, the diameter of described head body 21 cavitys is 120mm, whole cavity length is 350mm, the length of hybrid chamber 24 is 250mm, and as shown in Figure 3, its outlet 210 is tapered structure in the structural representation of nozzle 28, its cone angle is 80 °, and spray eye 211 aperture b are 6mm; Described hybrid chamber 24 ends are provided with 8 nozzles 28 along even circumferential, and the axle center angle of the axle center of nozzle 28 and shower nozzle is acute angle.
The internal diameter of described tower body is 4m, tower height 12m.
The present embodiment is produced with activated Calcium carbonate, in its slurry, solid content D50 particle diameter is 270 nanometers, and the product powder of producing after testing its D50 particle diameter is 6-9 nanometer, and the liquidity scale adopts fixing cone method to measure, its angle of repose is 53 degree, 3.2 tons of day outputs.
Dry gentle powder integral process of the present invention, compressed air forms supersonic airstream atomization slip after nozzle, raw material suspension slurry directly can be prepared into product powder by this technique, overcome the shortcoming that prior art slurries must just can obtain by gas powder product powder after super-dry, to reduce production cost and the equipment investment of powder, maintenance cost, solve the agglomeration traits between traditional centrifugal drying and pressure drying technique powder simultaneously, effectively improve mobility and the dispersed index of product, can directly slurry be prepared into micron-sized powder by this technique, and controllability is high.
The present invention is not limited to aforesaid detailed description of the invention. The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (10)
1. a dry gentle powder integral process, is characterized in that: comprise following steps:
(a) regulating target product slurry to mass concentration is 10%-30%;
(b) slurry being delivered to aperture is that the distributor of 6mm-10mm carries out homogenizing, after homogenizing, be mixed into Compressed Gas the nozzle formation slurry mist that aperture is 4mm-6mm again, the feed pressure of described slurry is 0.5MPa-0.8MPa, and the admission pressure of described Compressed Gas is 0.5MPa-0.8MPa;
(c) slurry mist is dried in drying tower, and described drying tower inducer temperature is 220 DEG C-320 DEG C, and outlet temperature is 110 DEG C-130 DEG C;
(d) the dried powder of collection drying tower afterbody.
2. dry gentle powder integral process as claimed in claim 1, is characterized in that: in described step (a), regulating target product slurry to mass concentration is 14%-18%.
3. dry gentle powder integral process as claimed in claim 1, it is characterized in that: in described step (b), it is that the distributor of 8mm carries out homogenizing that slurry is delivered to aperture, after homogenizing, be mixed and fed into Compressed Gas the nozzle formation slurry mist that aperture is 5.5mm again, the feed pressure of described slurry is 0.5MPa-0.8MPa, and the admission pressure of Compressed Gas is 0.5MPa-0.8MPa.
4. dry gentle powder integral process as claimed in claim 1, is characterized in that: in described step (c), described drying tower adopts High Temperature Gas tangential admission dry, and inducer temperature is 280 DEG C-300 DEG C, and outlet section temperature is 110 DEG C-130 DEG C.
5. dry gentle powder integral process as claimed in claim 1, is characterized in that: the internal diameter of described drying tower tower body is 3m-4m, tower height 8m-12m.
6. dry gentle powder integral process as claimed in claim 1, it is characterized in that: described step (b) is carried out in shower nozzle (2), described shower nozzle (2) comprises the head body (21) of hollow cavity structure, the cavity of described head body (21) is separated into feed cavity (23) and hybrid chamber (24) by dispersion plate (22), the dispersion hole (25) that to be provided with the aperture that is evenly arranged on described dispersion plate (22) be 6mm-10mm, in head body (21), be provided with charging aperture (26), air inlet (27) and nozzle (28), described charging aperture (26) is arranged in feed cavity (23), described air inlet (27) is arranged on hybrid chamber (24), described nozzle (28) is arranged at the end of hybrid chamber (24), spray eye (211) aperture of nozzle (28) is 4mm-6mm.
7. dry gentle powder integral process as claimed in claim 6, is characterized in that: the outlet (210) of described nozzle (28) is tapered structure, and its cone angle is 70 °-80 °.
8. dry gentle powder integral process as claimed in claim 6, is characterized in that: the diameter of the cavity of described hybrid chamber (24) is 80mm-120mm, and length is 150mm-250mm.
9. dry gentle powder integral process as claimed in claim 1, is characterized in that: in described step (d), be also further included in before dry powder is collected and carry out classification.
10. dry gentle powder integral process as claimed in claim 1, is characterized in that: in step (a), in described slurry, contain dispersant.
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| CN110818433A (en) * | 2019-12-30 | 2020-02-21 | 安徽中创电子信息材料有限公司 | Device and method for controlling morphology of high-purity superfine electronic function powder material |
| CN112715603B (en) * | 2020-12-31 | 2023-04-28 | 广东广益科技实业有限公司 | Preparation method and preparation device of powder cake emulsifying foaming agent |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290653A (en) * | 2000-11-21 | 2001-04-11 | 成都多恩日化实业有限公司 | Method for preparing granular anhydrous sodium metasilicate |
| CN1563934A (en) * | 2004-04-21 | 2005-01-12 | 浙江大学 | Small spray drying appts. for lab and its application method |
| KR20080043280A (en) * | 2008-04-25 | 2008-05-16 | 주식회사 해천 | A spray dry system utilizing a vacuum chamber |
| CN103120857A (en) * | 2011-11-18 | 2013-05-29 | 中国石油化工股份有限公司 | Solid-liquid separation method of nanometer material |
| CN104014141A (en) * | 2014-06-10 | 2014-09-03 | 张家港市杨舍丝印工艺厂 | High-speed centrifugal spray drying device and process |
| JP5858101B2 (en) * | 2014-07-15 | 2016-02-10 | 住友金属鉱山株式会社 | Pellet manufacturing method, nickel oxide ore smelting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5858101A (en) * | 1981-10-01 | 1983-04-06 | Snow Brand Milk Prod Co Ltd | Spray drying method and apparatus therefor |
-
2014
- 2014-12-02 CN CN201410716208.3A patent/CN104436723B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290653A (en) * | 2000-11-21 | 2001-04-11 | 成都多恩日化实业有限公司 | Method for preparing granular anhydrous sodium metasilicate |
| CN1563934A (en) * | 2004-04-21 | 2005-01-12 | 浙江大学 | Small spray drying appts. for lab and its application method |
| KR20080043280A (en) * | 2008-04-25 | 2008-05-16 | 주식회사 해천 | A spray dry system utilizing a vacuum chamber |
| CN103120857A (en) * | 2011-11-18 | 2013-05-29 | 中国石油化工股份有限公司 | Solid-liquid separation method of nanometer material |
| CN104014141A (en) * | 2014-06-10 | 2014-09-03 | 张家港市杨舍丝印工艺厂 | High-speed centrifugal spray drying device and process |
| JP5858101B2 (en) * | 2014-07-15 | 2016-02-10 | 住友金属鉱山株式会社 | Pellet manufacturing method, nickel oxide ore smelting method |
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