CN106001592A - Device for preparing metal particles through normal-pressure water cooling mode and preparation method - Google Patents
Device for preparing metal particles through normal-pressure water cooling mode and preparation method Download PDFInfo
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- CN106001592A CN106001592A CN201610657062.9A CN201610657062A CN106001592A CN 106001592 A CN106001592 A CN 106001592A CN 201610657062 A CN201610657062 A CN 201610657062A CN 106001592 A CN106001592 A CN 106001592A
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- metallic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/10—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
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Abstract
The invention relates to a device for preparing metal particles through a normal-pressure water cooling mode and a preparation method. The device comprises a rotary pelletization system, a cooling system and a collecting and separating system. In the rotary pelletization system, molten metal is injected into a rotary disc, the rotary disc is driven to rotate through drive of a drive motor, and the molten metal is pelletized; the cooling system cools the pelletized and splashed metal particles; the collecting and separating system collects and screens a mixture of cooling water and the metal particles. According to the device, as no medium needs to be jet at high pressure to crush metal liquid flow any more, energy consumption and the production cost are greatly reduced. The device is used for the preparation method of the metal particles. The rotating speed of the drive motor is controlled according to metal properties, the water quantity in the cooling system is adjusted according to the heat exchange effect of the metal particles and the cooling water, and finally the metal particles are dried by itself through waste heat of the metal particles. The method is simple, easy to carry out and low in energy consumption, and cost is reduced.
Description
Technical field
The present invention relates to metallic particles preparing technical field, be specifically related to a kind of employing normal pressure water-cooling pattern and prepare
The device of metallic particles and preparation method.
Background technology
Now, the purposes of metallic particles is more and more extensive, as ferrous powder granules can be used to do reducing agent, nickel and
Its alloying pellet can be used to produce rustless steel.
At present, the preparation method of metallic particles is most widely used is reducing process, atomization and electrolysis.Its
In, electrolysis is only used for producing high-purity and requiring the metallic particles of property.Ore reduction legal system depletion
Metal particles, applies relatively broad, but production procedure is relative complex.Produce as a example by iron powder by ore reduction method,
Needing through twice reduction process, solid carbon reduction produces sponge iron process and secondary reduction process, altogether
Tens procedures, production procedure is relative complex.Comparing with first two method, the advantage of atomization maximum is raw
Product efficiency is high, yield is big and low cost.
Atomization produces the principle of powder, is sprayed by metal stream by means of the fluid with certain kinetic energy (at a high speed)
Dissipating microgranule, the degree of its refinement is decided by kinetic energy (flow velocity, flow, gas property etc.) and the fluid stream of fluid
Speed and the ratio size of molten metal flow.
Atomization is mainly with (aerosolization) and water under high pressures (water atomization) such as pressure-air, argon, nitrogen
Metal liquid stream is smashed as ejection medium.When aerosolization method produces, due to cooling slowly, metal
Grain time of staying length, particle surface in high temperature aoxidize serious, and granule is the thinnest more notable.Additionally, use
Pressure-air is atomized as ejection medium, owing to heat transfer effect is relatively poor, at aerochamber Base Heat metal
Granule is susceptible to bonding, although bonding degree is loosened, but remains a need for a pulverizing process.Make with water under high pressure
Ejection medium is atomized, and rate of cooling is fast, and particle surface degree of oxidation is low, and the metallic particles obtained is spherical
Spend.But, either water atomization or aerosolization obtains metallic particles, it is required under elevated pressure conditions,
Energy consumption is bigger.
Summary of the invention
The problems referred to above existed for prior art, it is an object of the present invention to provide a kind of simple in construction,
The employing normal pressure water-cooling pattern that energy consumption is low prepares the device of metallic particles.
It is a further object to provide the above-mentioned employing normal pressure water-cooling pattern of a kind of use and prepare metallic particles
The device method of preparing metallic particles.
For realizing above-mentioned first purpose, the present invention adopts the following technical scheme that a kind of employing normal pressure water-cooled side
Formula prepares the device of metallic particles, it is characterised in that: include that rotating granulation system, cooling system and collection divides
From system；
Rotate granulation system: include aerochamber, rotating disk, flange, connecting shaft and driving motor；
The top of described aerochamber has motlten metal inlet, and bottom has for discharging cooling water and metal
The outlet of granulate mixture；
Described rotating disk and flange are positioned at inside aerochamber, and rotating disk is fixed on the top of flange, rotating disk and melted gold
Belong to inlet to be oppositely arranged；
Described connecting shaft is arranged on the lower section of flange, and its top is fixed with flange and is connected；
Described driving motor is connected with connecting shaft, and drive connection axle is along its central axis；
Cooling system: include cooling down water and cooling water ejection part；
Described cooling water ejection part is arranged in aerochamber, and is fixed on inside aerochamber roof and makes it spray
Cooling water flows down along the top inside aerochamber vertical side walls；
Collect piece-rate system: include catcher, screening machine, metallic particles catcher and cooling water collector；
Described catcher is for collecting the metallic particles discharged bottom aerochamber and the mixture of cooling water；
Described screening machine connects with catcher, is separated by the mixture of metallic particles and cooling water, metal
Particle collector connects with screening machine for collecting the metallic particles branched away from sifted, and cooling water is collected
Device connects with screening machine for collecting the cooling water branched away from sifted.
As optimization, also include the motlten metal injecting structure being arranged on outside aerochamber roof；
Described motlten metal injecting structure includes resistant to elevated temperatures container and stopper；
The bottom of described container has through hole, and described through hole is coaxially disposed with motlten metal inlet；
Described stopper is slidably matched by sealing with described.
As optimization, the outlet being used for discharging cooling water and metallic particles mixture bottom described aerochamber is ring
Shape structure, and circumferentially disposed along aerochamber diapire.
As optimization, described rotating disk is that top diameter is more than the horn-like structure of base diameter.
As optimization, the outside bottom described rotating disk has a circle shirt rim, and shirt rim has multiple installing hole.
As optimization, also include protective cover；Described protective cover is for covering described connecting shaft.
As optimization, described rotation granulation system also includes that converter, described converter are connected with driving motor,
For controlling to drive the rotating speed of motor.
As optimization, described but water ejection part is multiple shower nozzle, and the plurality of shower nozzle is along inside aerochamber roof
Circumference is laid.
As optimization, also include water circle device；Water circle device: include circulating pump and water-supply-pipe；
One end of described water-supply-pipe connects with cooling water collector, and the other end connects with cooling water ejection part, institute
State circulating pump to be arranged on water-supply-pipe.
For realizing above-mentioned second purpose, the present invention adopts the following technical scheme that the preparation of a kind of metallic particles
Method, uses the above-mentioned device using normal pressure water-cooling pattern to prepare metallic particles；
Concrete preparation process is as follows:
S1: start the driving motor rotated in granulation system, adjusts the rotating speed of rotating disk so that it is reach target and turn
Speed；
S2: open cooling system, opens cooling water ejection part, and the cooling water of cooling water ejection part ejection is from mist
Change the top inside the vertical side walls of room to flow down；
S3: inject motlten metal in granulation system to rotating, motlten metal flows into rotating disk, starts granulation；
S4: the metallic particles that granulation is formed wears supercooled water, exchanges, so with cooling water generation kinetic energy and heat
Beating the interior rear flank in aerochamber vertical side walls afterwards, metallic particles mixes dirty with cooling water, all flows into collection
In device；
S5: metallic particles sieves with the mixture entrance screening machine of cooling water, and after screening, metallic particles enters
Entering metallic particles catcher to collect, cooling water enters cooling water collector and stores；
S6: the metallic particles collected in metallic particles catcher is by the residual heat drying of himself.
Relative to prior art, present invention have the advantage that
What the present invention provided uses normal pressure water-cooling pattern to prepare the apparatus structure of metallic particles simply, designs ingenious；
It is compared with existing high-pressure atomization, owing to being all not required in motlten metal granulation and metallic particles cooling procedure
Want high pressure, thus greatly reduce energy consumption；It addition, metallic particles and cooling water are after collecting piece-rate system
Collecting respectively, cooling water can be with direct reuse, it is not necessary to other PROCESS FOR TREATMENT, and the most energy-conservation have environmental protection,
Also reduce the cost making metallic particles simultaneously.
Accompanying drawing explanation
Fig. 1 is that the present invention uses normal pressure water-cooling pattern to prepare the structural representation of device of metallic particles.
Detailed description of the invention
Below the present invention is described in further detail.
In describing the invention, it is to be understood that term, " on ", D score, " vertically ", " top ", " end ",
Orientation or the position relationship of the instruction such as " interior ", " outward " are based on orientation shown in the drawings or position relationship, only
It is necessary for the ease of describing the present invention and simplification description rather than instruction or the device of hint indication or element
There is specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Embodiment one:
See Fig. 1, a kind of device using normal pressure water-cooling pattern to prepare metallic particles, including rotate granulation system,
Cooling system and collection piece-rate system.
Rotate granulation system: include aerochamber 9, rotating disk 4, flange 5, connecting shaft 7, drive motor 12 and
Converter 13.
The top of aerochamber 9 has motlten metal inlet, and bottom has for discharging cooling water and metal
The outlet of grain mixture；
Inject motlten metal for convenience and control injection rate and the flow of motlten metal, it is also possible to including setting
Put the motlten metal injecting structure outside aerochamber 9 roof；
Motlten metal injecting structure includes resistant to elevated temperatures container 2 and stopper 1；The bottom of described container 2 has logical
Hole, described through hole is coaxially disposed with motlten metal inlet；Described stopper 1 is joined by sealing slip with described
Close, be used for blocking described through hole.When being embodied as, described stopper 1 is by Handheld Division and blockage two parts group
Become, the most hand-held, to stir and stopper stopper, the diameter of this Handheld Division is more than blockage, the most also may be used
To arrange anti-slip veins on Handheld Division, it is simple to when stirring stopper, stopper is slipped out of the hand.
Preferentially, the outlet being used for discharging cooling water and metallic particles mixture bottom aerochamber 9 is ring junction
Structure, and circumferentially disposed along aerochamber 9 diapire.This structure is more beneficial for quickly collecting cooling water and metal
The mixture of grain.Described outlet is near the upright side walls of aerochamber 9, and this is primarily due to metallic particles and passes through
After cooling water cooling, the inner side in aerochamber 9 upright side walls can be hit, then fall, described outlet is set
Put and can quickly collect cooling water and the mixture of metallic particles in the upright side walls near aerochamber 9.
It is internal that described rotating disk 4 and flange 5 are positioned at aerochamber 9, and rotating disk 4 is fixed on the top of flange 5, turns
Dish 4 is oppositely arranged with motlten metal inlet；Preferably, rotating disk 4 is more than base diameter loudspeaker for top diameter
Shape structure, the motlten metal being conveniently positioned at rotating disk 4 flies out from rotating disk open top, is granulated by rotating disk
The metallic particles that metal liquid obtains, granule is uniform, good sphericity, it addition, by rotating disk granulated metal liquid
Body prepares metallic particles, can be controlled by regulation metal liquid flow, disk diameter and rotating speed size
The size of granule, meets and produces needs.
Outside bottom this rotating disk 4 has a circle shirt rim, and shirt rim has multiple installing hole.Shirt rim and installation
The setting in hole, primarily to more preferably, more securely by rotating disk be fixed on flange, prevents rotating disk as much as possible
Relatively rotate with flange or mobile.
In order to prevent cooling down the water corrosion to connecting shaft 7, it is also possible to increasing protective cover 8, this protective cover 8 is by whole
Individual connecting shaft 7 covers completely, thus prevents cooling down water and contact with connecting shaft 7.During enforcement, on protective cover 8
There is the through hole that connecting shaft 7 top passes, and arrange between the through hole and connecting shaft 7 at protective cover 8 top
Sealing ring 14, makes to seal between the through hole at protective cover 8 top and connecting shaft 7 rotatably to coordinate, thus ensures
When driving motor 12 to drive connecting shaft 7 to rotate, protective cover 8 does not rotates, and ensures that cooling water will not enter simultaneously
In protective cover 8.When being embodied as, operating for convenience, protective cover 8 can be simultaneously by connecting shaft 7 with drive
Galvanic electricity machine 12 covers in the lump.
Described connecting shaft 7 is arranged on the lower section of flange 5, and its top is fixed with flange 5 and is connected；Described drive
Galvanic electricity machine 12 is connected with connecting shaft 7, and drive connection axle 7 is along its central axis.
Described converter 13 is connected with driving motor 12, for controlling to drive the rotating speed of motor 12.Converter
13 arrange primarily to convenient regulation drives the rotating speed of motor 12, such that it is able to according to different gold
Belong to feature, adjust the rotating speed of rotating disk, add the suitability of this device.
Cooling system: include cooling down water and cooling water ejection part；
Described cooling water ejection part is arranged in aerochamber 9, and is fixed on inside aerochamber 9 roof and makes it spray
The cooling water gone out flows down along the top inside aerochamber 9 vertical side walls；Thus splash out by rotating disk 4 top
Metallic particles cooling.
After metallic particles arrives aerochamber vertical side walls, cooled current scour, run down into together at the bottom of aerochamber
Portion, will not be atomized again on locular wall occur bonding.Additionally, metallic particles mixes with cooling water, continue heat exchange,
Making metallic particles drop to below bonding temp, the screening of screened machine also will not occur bonding phenomenon later.Rotating disk
Granulation combines with cooling down current, and metallic particles flies away from rotating disk from disk edge with the highest speed, and
Contact with cooling water in the extremely short time, decrease the time of contact of metallic particles and air, greatly reduce
The degree of oxidation of surface of metal particles；Rotating disk granulation combines with cooling current, shortens flying distance, subtracts
The little floor space of whole device, has saved land resource, has reduced cost of investment；Rotating disk is granulated with cold
But current combine, produce metal dust technique with direct voltage water compared with, institute's water requirement greatly reduces, both
Reduce production cost, save again substantial amounts of water resource；During use, can be according to metallic particles with cooling water
Heat transfer effect, adjust cooling water water yield size, i.e. flow down along the top inside aerochamber 9 vertical side walls
Cooling water thickness.
Collect piece-rate system: include catcher 11, screening machine 10, metallic particles catcher 15 and cooling water
Catcher 16；
Described catcher 11 is for collecting the metallic particles discharged bottom aerochamber 9 and the mixture of cooling water；
When being embodied as, catcher 11 is positioned at the outside of aerochamber 9, and is positioned at the bottom of aerochamber 9, this collection
The opening of device 11 upper end is relative with the outlet of the bottom of aerochamber 9；The preferably circular structure of catcher 11,
The opening of its upper end is relative with the ring exit bottom aerochamber 9, cooling water and the metallic particles of whereabouts is mixed
Compound is collected in wherein.
Described screening machine 10 connects with catcher 11, is separated by the mixture of metallic particles and cooling water,
Metallic particles catcher 15 connects for collecting the metallic particles sieving out from screening machine 10 with screening machine 10,
Cooling water collector 16 connects with screening machine 10 for collecting the cooling water sieving out from screening machine 10.
Metallic particles and cooling water sieve rapidly through screening machine, isolated metallic particles, remain 200 DEG C with
On waste heat, this part of waste heat can make granule itself reach dry effect, it is not necessary to additionally provide heat
Dry metallic particles, reduce energy consumption, saved cost.
Described but water ejection part is multiple shower nozzle, and the plurality of shower nozzle is laid along aerochamber 9 roof inner circumferential.
When being embodied as, can determine that aerochamber 9 vertical side walls inside top flows down cold according to the characteristic of metal
But the thickness of water, so that it is determined that the number of turns that multiple shower nozzle is laid along aerochamber 9 roof inner circumferential, accompanying drawing 1
In, the number of turns that multiple shower nozzles are laid along aerochamber 9 roof inner circumferential is a circle.
Through collecting piece-rate system, cooling water and metallic particles are collected respectively, therefore recycle cooling water
It is very convenient, to this end, this device can also include water circle device；Water circle device includes circulating pump 17 He
Water-supply-pipe 18；One end of water-supply-pipe 18 connects with cooling water collector 16, the other end and cooling water ejection part
Connection, described circulating pump 17 is arranged on water-supply-pipe 18.Cooling water after separation can with direct reuse,
Without other PROCESS FOR TREATMENT, the most energy-conservation have environmental protection, also reduces the cost making metallic particles simultaneously.
Embodiment two:
The preparation method of a kind of metallic particles, uses the employing normal pressure water-cooling pattern preparation gold described in embodiment one
The device of metal particles；
Concrete preparation process is as follows:
S1: start the driving motor 12 rotated in granulation system, adjusts the rotating speed of rotating disk 4 so that it is reach mesh
Mark rotating speed；
S2: open cooling system, opens cooling water ejection part, and the cooling water of cooling water ejection part ejection is from mist
Change the top inside the vertical side walls of room 9 to flow down；
S3: inject motlten metal in granulation system to rotating, motlten metal flows into rotating disk 4, starts granulation；
S4: the metallic particles that granulation is formed wears supercooled water, exchanges, so with cooling water generation kinetic energy and heat
Beating in the interior rear flank of aerochamber 9 vertical side walls afterwards, metallic particles mixes dirty with cooling water, all flows into receipts
In storage 11；
S5: metallic particles sieves with the mixture entrance screening machine 10 of cooling water, metallic particles after screening
Entering metallic particles catcher 15 to collect, cooling water enters cooling water collector 16 and stores；
S6: the metallic particles of the collection in metallic particles catcher 15 is by the residual heat drying of himself.
The metallic particles collected at least waste heat of more than 200 DEG C, this part of waste heat can make granule itself reach
To the effect dried, it is not necessary to additionally provide heat to dry metallic particles, reduce energy consumption, saved cost.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although
With reference to preferred embodiment, the present invention is described in detail, it will be understood by those within the art that,
Technical scheme can be modified or equivalent, without deviating from technical solution of the present invention
Objective and scope, it all should be contained in the middle of scope of the presently claimed invention.
Claims (10)
1. one kind uses the device that normal pressure water-cooling pattern prepares metallic particles, it is characterised in that: include rotating grain
Change system, cooling system and collection piece-rate system；
Rotate granulation system: include aerochamber (9), rotating disk (4), flange (5), connecting shaft (7) and drive
Galvanic electricity machine (12)；
The top of described aerochamber (9) has motlten metal inlet, bottom have for discharge cooling water and
The outlet of metallic particles mixture；
It is internal that described rotating disk (4) and flange (5) are positioned at aerochamber (9), and rotating disk (4) is fixed on flange
(5) top, rotating disk (4) is oppositely arranged with motlten metal inlet；
Described connecting shaft (7) is arranged on the lower section of flange (5), and its top is fixed with flange (5) and is connected；
Described driving motor (12) is connected with connecting shaft (7), and drive connection axle (7) turns along its central shaft
Dynamic；
Cooling system: include cooling down water and cooling water ejection part；
Described cooling water ejection part is arranged in aerochamber (9), and is fixed on inside aerochamber (9) roof
Its cooling water sprayed is made to flow down along the top inside aerochamber (9) vertical side walls；
Collect piece-rate system: include catcher (11), screening machine (10), metallic particles catcher (15)
With cooling water collector (16)；
Described catcher (11) is for collecting the metallic particles and cooling water discharged from aerochamber (9) bottom
Mixture；
Described screening machine (10) connects with catcher (11), is entered by the mixture of metallic particles and cooling water
Row separates, and metallic particles catcher (15) connects with screening machine (10) for collecting from screening machine (10)
Screening metallic particles out, cooling water collector (16) connects with screening machine (10) for collecting from sieve
Extension set (10) screening cooling water out.
2. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 1, its feature
It is: also include being arranged on the motlten metal injecting structure outside aerochamber (9) roof；
Described motlten metal injecting structure includes resistant to elevated temperatures container (2) and stopper (1)；
The bottom of described container (2) has through hole, and described through hole is coaxially disposed with motlten metal inlet；
Described stopper (1) is slidably matched by sealing with described.
3. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 2, its feature
It is: described aerochamber (9) bottom is ring junction for discharging the outlet of cooling water and metallic particles mixture
Structure, and circumferentially disposed along aerochamber (9) diapire.
4. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 3, its feature
It is: described rotating disk (4) is that top diameter is more than the horn-like structure of base diameter.
5. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 4, its feature exists
In: the outside of described rotating disk (4) bottom has a circle shirt rim, and shirt rim has multiple installing hole.
6. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 5, its feature exists
In: also include protective cover (8)；Described protective cover (8) is for covering described connecting shaft (7).
7. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 6, its feature exists
In: described rotation granulation system also includes converter (13), described converter (13) and driving motor (12)
Connect, be used for the rotating speed controlling to drive motor (12).
8. the device using normal pressure water-cooling pattern to prepare metallic particles as claimed in claim 7, its feature exists
In: described but water ejection part is multiple shower nozzle, and the plurality of shower nozzle is along aerochamber (9) roof inner circumferential cloth
If.
9. the normal pressure water-cooling pattern that uses as described in any one of claim 1-8 prepares the device of metallic particles,
It is characterized in that: also include water circle device；
Water circle device: include circulating pump (17) and water-supply-pipe (18)；
One end of described water-supply-pipe (18) connects with cooling water collector (16), the other end and cooling water spray
Going out part connection, described circulating pump (17) is arranged on water-supply-pipe (18).
10. the preparation method of a metallic particles, it is characterised in that: use the employing described in claim 9
Normal pressure water-cooling pattern prepares the device of metallic particles；
Concrete preparation process is as follows:
S1: start the driving motor (12) rotated in granulation system, adjusts the rotating speed of rotating disk (4) so that it is
Reach rotating speed of target；
S2: open cooling system, opens cooling water ejection part, and the cooling water of cooling water ejection part ejection is from mist
Change the top inside room (9) vertical side walls to flow down；
S3: inject motlten metal in granulation system to rotating, motlten metal flows into rotating disk (4), starts granulation；
S4: the metallic particles that granulation is formed wears supercooled water, exchanges, so with cooling water generation kinetic energy and heat
Beating in the interior rear flank of aerochamber (9) vertical side walls afterwards, metallic particles mixes dirty with cooling water, all flows into
In catcher (11)；
S5: metallic particles sieves with mixture entrance screening machine (10) of cooling water, metal after screening
Granule enters metallic particles catcher (15) and collects, and cooling water enters cooling water collector (16) and stores；
The metallic particles collected in S6: metallic particles catcher (15) is by the residual heat drying of himself.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107127350A (en) * | 2017-05-19 | 2017-09-05 | 湖南久泰冶金科技有限公司 | A kind of metal centrifugal atomizing powder high-speed centrifugal atomization device |
| CN108237230A (en) * | 2018-04-26 | 2018-07-03 | 苏州海森伯格环保科技有限公司 | A kind of intelligence atomising device |
| CN108247076A (en) * | 2018-04-26 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of atomising device |
| CN108971506A (en) * | 2018-07-02 | 2018-12-11 | 王尚木 | A kind of device and method of the mass low cost production small ball of noble metal |
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| CN108237230A (en) * | 2018-04-26 | 2018-07-03 | 苏州海森伯格环保科技有限公司 | A kind of intelligence atomising device |
| CN108247076A (en) * | 2018-04-26 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of atomising device |
| CN108237230B (en) * | 2018-04-26 | 2019-04-19 | 福州超一工艺品有限公司 | A kind of intelligence atomising device |
| CN108247076B (en) * | 2018-04-26 | 2019-06-11 | 易安达仪器科技(江苏)有限公司 | A kind of atomising device |
| CN108971506A (en) * | 2018-07-02 | 2018-12-11 | 王尚木 | A kind of device and method of the mass low cost production small ball of noble metal |
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Application publication date: 20161012 |