CN107803510B - Vacuum gas atomization powder process grading plant - Google Patents
Vacuum gas atomization powder process grading plant Download PDFInfo
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- CN107803510B CN107803510B CN201710930289.0A CN201710930289A CN107803510B CN 107803510 B CN107803510 B CN 107803510B CN 201710930289 A CN201710930289 A CN 201710930289A CN 107803510 B CN107803510 B CN 107803510B
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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
- B22F9/082—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 atomising using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/26—Multiple arrangement thereof for series flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/28—Multiple arrangement thereof for parallel flow
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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
- B22F9/082—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 atomising using a fluid
- B22F2009/0896—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 atomising using a fluid particle transport, separation: process and apparatus
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Abstract
The invention discloses a vacuum gas atomization powder preparation grading plant, comprising: powder process device, inject the powder process cavity in the powder process device, the powder process cavity has the export, be suitable for in the powder process cavity to let in metallic solution and be used for with metallic solution breaks into the atomizing gas of a plurality of metal liquid drops, and the metal liquid drop of broken formation is in the cooling of powder process cavity forms metal powder, still includes: airflow classification device, inject in the airflow classification device and select separately the chamber, select separately the chamber and be equipped with metal import, be suitable for and supply thick metal powder exhaust first metal export and be suitable for and supply thin metal powder exhaust second metal export, metal import with the export intercommunication, atomizing gas can with metal powder by the powder process cavity blows to select separately the chamber. The device greatly improves production efficiency, and the oxygen content of metal powder is low, and reutilization atomizing gas reduces manufacturing cost.
Description
Technical Field
The invention relates to the field of production of vacuum gas atomization equipment, in particular to a vacuum gas atomization powder preparation grading device.
Background
The atomized powder is prepared by vacuum atomization technique, which uses high-purity inert gas to blow molten metal into fine liquid drops through a nozzle with special structure, and the liquid drops are cooled to form metal powder. The metal powder produced by the method has a non-uniform particle size distribution, and generally has a normal distribution, namely, the metal powder has a distribution from a finer powder (below 5 mu m) to a coarser powder (above 300 mu m). The size of the median particle size of the powder can be adjusted by adjusting parameters such as the structure of the nozzle, the gas pressure and the like, so that the proportion of the target powder is increased, and then the target powder is screened out by a screening method. At present, screening is mainly classified into vibratory screening and air-flow classification equipment screening.
The air flow classification equipment is used for classifying by utilizing centrifugal action, and because the cost of inert gas is high, the air flow classification equipment used for industrial production in the market at present uses air as a carrier for powder flowing. Because the air contains about 20 percent of oxygen, the oxygen reacts with the powder in the grading process to oxidize the surface of the powder and improve the oxygen content of the whole powder, and the oxygen content is one of the most important indexes of the metal powder, if extra inert gas is needed to be used as a carrier for powder flowing in order to control the oxygen content of the easily oxidized powder, the production cost is increased; in addition, in the prior art, the metal atomized powder which needs to be cooled before being screened and classified is transferred to an airflow classification device, so that the production process is increased. Therefore, the screening process for most metal powders at the present stage is complex, the screening efficiency is low, and the production cost and the oxygen content of the metal powder are difficult to guarantee at the same time.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a vacuum gas atomization powder preparation grading device, which can complete powder from production to screening at one time without transferring the powder between production equipment and screening equipment, greatly improve the production efficiency, reduce the oxygen content of metal powder, improve the product quality, reutilize atomization gas and reduce the production cost.
In order to achieve the above object, the present invention provides a vacuum atomization pulverizing classifier, comprising: powder process device, inject the powder process cavity in the powder process device, the powder process cavity has the export, be suitable for in the powder process cavity to let in metallic solution and be used for with metallic solution breaks into the atomizing gas of a plurality of metal liquid drops, and the metal liquid drop of broken formation is in the cooling of powder process cavity forms metal powder, still includes: airflow classification device, inject in the airflow classification device and select separately the chamber, select separately the chamber and be equipped with metal import, be suitable for and supply thick metal powder exhaust first metal export and be suitable for and supply thin metal powder exhaust second metal export, metal import with the export intercommunication, atomizing gas can with metal powder by the powder process cavity blows to select separately the chamber.
In the technical scheme, the air flow grading device is communicated with the powder making equipment, so that the powder can be screened from production at one time without transferring the powder between the production equipment and the screening equipment, and the production efficiency is greatly improved; and atomizing gas enters the airflow grading device from the powder making equipment and can be recycled, so that the screening process is carried out under the protection of the atomizing gas, the powder is prevented from being subjected to air oxidation, the product quality is improved, and the production cost is saved.
In addition, the vacuum gas atomization powder preparation grading device provided by the invention can also have the following technical characteristics:
furthermore, an air supplementing device is arranged between the metal inlet and the outlet to drive the metal powder to flow from the outlet to the metal inlet.
Further, the air flow classification device comprises a plurality of classification groups connected in parallel, and the metal inlet of each classification group is connected with the outlet.
Further, the powder process device with be equipped with the reposition of redundant personnel structure between the air current grading plant, the reposition of redundant personnel structure including be responsible for and with be responsible for a plurality of branch pipes of intercommunication, be responsible for with export intercommunication, it is a plurality of branch pipe and a plurality of the metal import one-to-one of hierarchical group links to each other.
Further, the classification group comprises a plurality of sub-classification devices which are connected in series in sequence.
Furthermore, each sub-grading device is provided with the metal inlet, the first metal outlet and the second metal outlet, the metal inlets and the second metal outlets of two adjacent sub-grading devices are communicated, and the metal inlet of one of the sub-grading devices at two ends is communicated with the outlet.
Further, the separation cavity is also provided with an air supplementing port which is suitable for being communicated with an air source.
Further, the dust collector also comprises a cloth bag dust collector, and the second metal outlet is connected with the cloth bag dust collector.
Preferably, the atomizing gas is argon.
Preferably, the air flow classifying means is a cyclonic separating apparatus.
According to the invention, the airflow grading device is communicated with the powder making equipment, so that the metal powder can be graded and made into the granularity during vacuum gas atomization production, the atomization gas is secondarily utilized, the resources are saved, the waste is reduced, the actual production steps are reduced, and the production efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a vacuum gas atomization pulverizing classifier;
FIG. 2 is a schematic diagram of the structure of the hierarchical group of the structure of FIG. 1;
in the figure:
a pulverizing device 1; a pulverizing chamber 11; an outlet 111; a flow dividing structure 2; a main tube 21; a branch pipe 22; a first pressure gauge 221; a temperature table 222; a gas supplementing device 3; an air supplement pipe 31; a first on-off valve 32; an air flow classification device 4; a sorting chamber 41; a metal inlet 411; a first metal outlet 412; a second metal outlet 413; an air supplement port 414; a motor 42; an air intake duct 5; a main intake pipe 51; an intake sub-duct 52; a second cut-off valve 521; a second pressure gauge 522; a bag dust collector 6; an air inlet 61; and an air outlet 62.
Detailed Description
The present invention will be further described with reference to fig. 1 to 2.
The invention provides a vacuum atomization pulverizing and grading device, which comprises: the device comprises a powder making device 1, wherein a powder making chamber 11 is defined in the powder making device 1, the powder making chamber 11 is provided with an outlet 111, the powder making chamber 11 is suitable for introducing a metal solution and atomizing gas for crushing the metal solution into a plurality of metal droplets, and the metal droplets formed by crushing are cooled in the powder making chamber 11 to form metal powder; specifically, the metal can be bulk material, the powder preparation cavity comprises a smelting chamber, an atomizing chamber and an atomizer for connecting the smelting chamber and the atomizing chamber, a smelting crucible, a heat-insulating crucible and a flow guide channel are arranged in the smelting chamber, the metal is melted in the smelting crucible, poured into the heat-insulating crucible and enters the atomizer through the flow guide channel communicated with the heat-insulating crucible, the atomizing gas in the atomizer breaks the metal liquid flow to form a plurality of metal liquid drops, and the metal liquid drops fall into the atomizing chamber and are cooled to form metal powder; the powder process grading plant still includes: the gas flow classifying device 4 is characterized in that a classifying cavity 41 is defined in the gas flow classifying device 4, the classifying cavity 41 is provided with a metal inlet 411, a first metal outlet 412 suitable for discharging coarse metal powder and a second metal outlet 413 suitable for discharging fine metal powder, the metal inlet 411 is communicated with the outlet 111, and atomizing gas can blow the metal powder to the classifying cavity 41 from the powder making cavity 11. Specifically, the atomizing gas is a high-speed gas flow, which can blow the metal powder from the powder making cavity to the separation cavity 41 through the outlet 111, and the inside of the separation cavity 41 of the gas flow classifying device 4 is provided with a classifying turbine, which rotates, so that the metal coarse powder is made to collide with the inner wall of the separation cavity 41 and then the speed disappears under the action of centrifugal force generated by the classifying turbine rotating at high speed, and then the metal coarse powder is lowered to the first metal outlet 412 along the inner wall of the separation cavity 41 and is collected by a metal collecting barrel positioned at the lower end of the first metal outlet 412; that is to say, through being linked together airflow classification device 4 and powder process equipment, can realize formulating the granularity with the metal powder is hierarchical simultaneously in vacuum gas atomization production, moreover the reutilization atomizing gas, resources are saved reduces the waste, has still reduced actual production step, has improved production efficiency greatly. It is worth mentioning that the rotation speed of the classifying turbine has an important influence on the classifying particle size of the sorted metal particles, and the classifying particle size of the metal powder can be controlled by adjusting the rotation speed of the classifying turbine.
It can be understood that the air flow grading device 4 is communicated with the powder making equipment, so that the powder can be screened from production at one time without transferring the powder between the production equipment and the screening equipment, and the production efficiency is greatly improved; and atomizing gas enters the airflow grading device 4 from the powder making equipment and can be recycled, so that the screening process is carried out under the protection of the atomizing gas, the powder is prevented from being subjected to air oxidation, the product quality is improved, and the production cost is saved.
Preferably, the atomizing gas is an inert gas, for example, the inert gas may be argon, and the inert gas or nitrogen may ensure that the metal powder is not oxidized during the production and screening processes, so that the product quality of the metal powder may be ensured. Of course, the invention is not limited thereto and the atomizing gas may also be nitrogen.
Further, as shown in fig. 2, an air supply device 3 is disposed between the metal inlet 411 and the outlet 111 to drive the metal powder to flow from the outlet 111 to the metal inlet 411, specifically, the metal powder can blow the metal powder into the separation chamber 41 under the action of the atomizing gas, and during actual production, the gas pressure and flow rate of the atomizing gas are insufficient to blow the metal powder into the separation chamber 41, so that the screening efficiency and the screening effect are affected, and the air supply device 3 disposed between the inlet and the outlet 111 of the metal machine can effectively supplement the gas flow flowing from the outlet 111 to the metal inlet 411, so that the gas flow reaches and is stabilized within a specified parameter requirement range, such as flow rate and pressure, thereby improving the screening efficiency of the metal powder and ensuring the screening quality.
In one embodiment of the present invention, as shown in fig. 2, a temperature gauge 222 and a first pressure gauge 221 are further provided between the metal inlet 411 and the outlet 111, since the atomizing gas is a high-temperature, high-pressure gas, the temperature and pressure have an important influence on the classification device in the process of flowing the metal powder from the outlet 111 to the metal inlet 411; for example, when the temperature is too high, the classification device may be seriously damaged; when the pressure is insufficient or too high, the sieving efficiency and the sieving quality are seriously influenced. By further arranging the temperature gauge 222 and the first pressure gauge 221 between the metal inlet 411 and the metal outlet 111, the temperature and the pressure of the metal inlet can be effectively monitored in real time, and the screening process is guaranteed to be effectively carried out.
Further, the air flow classifying device 4 comprises a plurality of classifying groups connected in parallel, and the metal inlet 411 of each classifying group is connected with the outlet 111, that is, the mixture of the metal powder and the atomizing gas is divided into a plurality of air flows after flowing out from the outlet 111 of the powder making chamber, and the plurality of air flows correspond to the plurality of classifying groups connected in parallel one by one. For example, in one embodiment of the present invention, as shown in FIG. 1, the gas flow fractionation device 4 comprises three fractionation groups in parallel; through setting the air current grading plant 4 to a plurality of parallelly connected hierarchical groups can make a plurality of hierarchical groups sieve metal powder simultaneously to improve screening efficiency, atomizing gas's gas flow velocity is too fast moreover, can lead to the hierarchical precision reduction of metal powder, also can reduce atomizing gas's gas flow effectively through setting up a plurality of parallelly connected hierarchical groups, makes it accord with the operation requirement of air current grading equipment.
Further, as shown in fig. 1 and 2, a flow dividing structure 2 is provided between the powder making device 1 and the airflow classifying device 4, the flow dividing structure 2 includes a main pipe 21 and a plurality of branch pipes 22 communicated with the main pipe 21, the main pipe 21 is communicated with the outlet 111, the plurality of branch pipes 22 are connected with the plurality of metal inlets 411 of the classifying groups in a one-to-one correspondence manner, that is, the metal powder flows out from the outlet 111 of the powder making device 1, flows through the main pipe 21 of the flow dividing mechanism, then the airflow mixture is divided by the plurality of branch pipes 22 communicated with the main pipe 21, and then the divided airflow mixture enters the airflow classifying device 4 through the metal inlets 411 and is sieved. Because atomizing gas's air current mixture is undulant great after flowing by export 111, can evenly shunt air current mixture effectively through setting up reposition of redundant personnel mechanism, make the air current stable, can improve metal powder's screening efficiency and screening quality simultaneously, also make things convenient for milling equipment 1 to be connected with air current grading plant 4 like this in addition.
Further, as shown in fig. 2, each branch pipe 22 is provided with an air supplement device 3, the air supplement device 3 includes an air supplement pipe 31, one end of the air supplement pipe 31 is communicated with the branch pipe, and the other end of the air supplement pipe 31 is communicated with an air source, preferably, the air source is an inert gas. That is, after the gas flow mixture is divided by the branch pipes 22, the branch pipes 22 are provided with the first pressure gauge 221, the pressure of the inlet gas is monitored in real time through the first pressure gauge 221, and if the pressure exceeds the requirement of gas flow classification, the opening degree of the corresponding branch pipe 22 in the dividing structure 2 is reduced; if the pressure is lower than the requirement of air flow classification, the air supply pipe 31 is used for supplying air, and finally the pressure in the branch pipe 22 meets the requirement of air flow classification. The method for adjusting the air inflow in real time can ensure that the screening of the air flow grading device 4 is effectively carried out.
Preferably, as shown in fig. 2, the air supply pipe 31 is provided with a first on-off valve 32 capable of controlling on-off between the air source and the branch, and specifically, the air supply pipe further includes a controller, the controller is electrically connected to both the first on-off valve 32 and the first pressure gauge 221, when the pressure in the branch pipe 22 displayed by the first pressure gauge 221 exceeds the air flow classification required pressure value, the pressure value is fed back to the controller, the first on-off valve 32 is controlled to be closed by the controller, when the pressure in the branch pipe 22 displayed by the first pressure gauge 221 is lower than the air flow classification required pressure value, the pressure value is fed back to the controller, the opening degree of the first on-off valve 32 is increased by the controller, and the pressure in the branch pipe 22 meets the air flow classification use requirement.
Further, as shown in fig. 1 and 2, the classification group includes a plurality of sub-classification devices connected in series in sequence, specifically, each sub-classification device is provided with a metal inlet 411, a first metal outlet 412 and a second metal outlet 413, the metal inlets 411 and the second metal outlets 413 of two adjacent sub-classification devices are communicated, the metal inlet 411 of one of the sub-classification devices at two ends is communicated with the outlet 111, that is, the plurality of sub-classification devices are connected in sequence from front to back, for the middle sub-classification device, the metal inlet 411 thereof is connected with the second metal outlet 413 of the previous sub-classification device, and the second metal outlet 413 thereof is connected with the metal inlet 411 of the next sub-classification device; for the two-sided sub-classifier, for example, the front-sided sub-classifier, the metal inlet 411 is connected to the outlet 111 of the pulverizing chamber 11.
Further, as shown in fig. 2, the sorting chamber 41 is further provided with an air supplement port 414, the air supplement port 414 is adapted to be communicated with an air source, specifically, an air inlet duct 5 is provided between the air supplement port 414 and the air source, the air inlet duct 5 can provide the air source for the sorting chamber 41, and can stabilize the air flow in the sorting chamber 41, so that the air flow classification device 4 can effectively sieve. For example, in a specific embodiment of the present invention, as shown in fig. 1, the air flow classifier 4 includes three parallel classification groups, each of which is provided with an air supplement port 414, and the air inlet pipe 5 includes a main air inlet pipe 51 and three auxiliary air inlet pipes 52 communicated therewith, the main air inlet pipe 51 is connected with an air source, and the auxiliary air inlet pipes 52 are respectively communicated with the air supplement ports 414 of the classification groups; it should be noted that each air intake sub-duct 52 is provided with a second on-off valve 521 to control the on-off of the main air intake duct 51 and each air intake sub-duct 52, so that air can be supplied to each classification group according to actual needs to meet the operation requirements of the classification group. Preferably, a second pressure gauge 522 is further arranged on each classification group, the pressure value of each classification group is monitored in real time through the second pressure gauge 522, and the on-off of the main intake pipe 51 and the auxiliary intake pipe 52 is controlled through a second on-off valve 521. It should be noted that the air intake of the air supply port 414 has an important influence on the classification particle size of the sorted metal particles, and the classification particle size of the metal powder can also be controlled by adjusting the air intake of the air intake duct 5.
Further, still include sack dust collector 6, second metal export 413 links to each other with sack dust collector 6, concretely, sack dust collector 6 includes air inlet 61 and gas outlet 62, air inlet 61 links to each other with second metal export 413, gas outlet 62 is communicated with the outside air, metal powder flows out from the export 111 of powder process cavity 11, get into air current grading plant 4 through metal import 411 end, under the centrifugal force effect that the rotatory grading turbine of high speed produced, make the thick powder of metal strike sorting chamber 41 inner wall after the speed disappear, descend to first metal export 412 along sorting chamber 41 inner wall, and fine powder gets into in sack dust collector 6 from second metal export 413, filter and discharge through sack dust collector 6 part superfine metal powder, can satisfy the environmental protection requirement like this. In a specific embodiment of the present invention, as shown in fig. 1 and fig. 2, the classifying group comprises a plurality of sub-classifying devices connected in series in sequence, the second metal outlet 413 of the other of the sub-classifying devices at two ends is connected to the bag-type dust removing device 6, the ends of the three parallel classifying groups are connected to the bag-type dust removing device 6, the metal powder flows out from the outlet 111 of the pulverizing chamber 11 into the main pipe 21 of the flow dividing structure 2, flows into each branch pipe 22, then enters the sub-classifying devices from each branch pipe 22 through the metal inlet 411, under the centrifugal force generated by the classifying turbine rotating at high speed, the speed of the metal coarse powder is eliminated after impacting the inner wall of the classifying chamber 41, and the metal powder descends to the first metal outlet 412 along the inner wall of the classifying chamber 41, while the fine powder enters the other sub-classifying devices from the second metal outlet 413, after being sieved by each sub-classifying devices, the second metal outlet 413 of the last sub-grading device is connected with the cloth bag dust removing device 6, and part of the superfine metal powder is filtered and discharged through the cloth bag dust removing device 6, so that the superfine powder of each grading group can be effectively filtered to meet the requirement of environmental protection.
Preferably, the air classifier 4 is a cyclone 4, and the cyclone 4 is a device that uses the rotational motion caused by the tangential introduction of air to throw solid particles or liquid droplets with large inertial centrifugal force towards the inside of the separation chamber 41 for separation. The cyclone 4 further comprises a motor 42, and the classifying turbine is driven by the motor 42 to rotate, so that centrifugal force is formed in the sorting chamber 41 to sieve the metal powder.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A vacuum atomization pulverizing and classifying device comprises: powder process device (1), define powder process cavity (11) in powder process device (1), powder process cavity (11) have export (111), be suitable for letting in metallic solution in powder process cavity (11) and be used for with metallic solution breaks into the atomizing gas of a plurality of metal liquid drops, the metallic liquid drop that the breakage formed is in powder process cavity (11) internal cooling forms metal powder, its characterized in that still includes:
-a gas flow classifying device (4), said gas flow classifying device (4) defining a classifying chamber (41) therein, said classifying chamber (41) being provided with a metal inlet (411), a first metal outlet (412) adapted to discharge coarse metal powder and a second metal outlet (413) adapted to discharge fine metal powder, said metal inlet (411) being in communication with said outlet (11), said atomizing gas being capable of blowing said metal powder from said milling chamber (11) towards said classifying chamber (41);
wherein, air classification device (4) include a plurality of parallelly connected hierarchical group, every hierarchical metal import (411) of group all with export (11) link to each other, powder process device (1) with be equipped with between air classification device (4) reposition of redundant personnel structure (2), reposition of redundant personnel structure (2) including be responsible for (21) and with be responsible for a plurality of branch pipes (22) of (21) intercommunication, be responsible for (21) with export (11) intercommunication, it is a plurality of branch pipe (22) and a plurality of hierarchical metal import (411) one-to-one of group links to each other.
2. The classification apparatus for pulverizing by vacuum atomization as claimed in claim 1, wherein an air supply device (3) is disposed between the metal inlet (411) and the outlet (11) to drive the metal powder to flow from the outlet (11) to the metal inlet (411).
3. The vacuum gas atomization pulverizing classifier of claim 1, wherein the classifying group comprises a plurality of sub-classifiers connected in series in sequence.
4. The vacuum gas atomization pulverizing classifier of claim 3, wherein each of the sub-classifiers is provided with the metal inlet (411), the first metal outlet (412) and the second metal outlet (413), the metal inlets (411) and the second metal outlets (413) of two adjacent sub-classifiers are communicated, and the metal inlet (411) of one of the sub-classifiers at both ends is communicated with the outlet (11).
5. The vacuum gas atomization pulverizing classifier according to claim 1, characterized in that the classifying chamber (41) is further provided with an air supplement port (414), and the air supplement port (414) is adapted to communicate with an air source.
6. The vacuum gas atomization pulverizing and classifying device of claim 1, further comprising a bag-type dust collector (6), wherein the second metal outlet (413) is connected to the bag-type dust collector (6).
7. The vacuum gas atomization pulverizing classifier of claim 1, wherein the atomizing gas is argon.
8. A vacuum gas atomization pulverizing classifier according to any one of claims 1 to 7, characterized in that the gas flow classifier (4) is a cyclone separator.
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| CN109079150A (en) * | 2018-09-04 | 2018-12-25 | 江苏威拉里新材料科技有限公司 | A kind of horizontal atomizer of 3D printing metal powder production |
| CN109530710B (en) * | 2018-12-20 | 2023-09-05 | 西安铂力特增材技术股份有限公司 | Graded treatment system for atomized metal powder and application method thereof |
| CN110961639A (en) * | 2019-11-12 | 2020-04-07 | 有研亿金新材料有限公司 | Preparation device and preparation method of noble metal spherical powder with different particle sizes |
| CN111185279A (en) * | 2020-01-14 | 2020-05-22 | 宜昌中泰新材料有限公司 | Barite ore grinding processing system |
| CN114308384B (en) * | 2022-01-17 | 2024-02-06 | 江苏威拉里新材料科技有限公司 | Dual-filtering device for vacuum atomization equipment and application method thereof |
| CN117323749B (en) * | 2023-11-03 | 2024-08-06 | 北京铝能清新环境技术有限公司 | Dry defluorination and desulfurization system for electrolytic aluminum flue gas and treatment method |
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| CN105668554A (en) * | 2015-12-31 | 2016-06-15 | 成都新柯力化工科技有限公司 | Method of preparing graphene nanoplatelets through air flow stripping classification |
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