CN110860694A - Preparation method and preparation equipment of superfine flaky iron powder - Google Patents
Preparation method and preparation equipment of superfine flaky iron powder Download PDFInfo
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- CN110860694A CN110860694A CN201911168225.7A CN201911168225A CN110860694A CN 110860694 A CN110860694 A CN 110860694A CN 201911168225 A CN201911168225 A CN 201911168225A CN 110860694 A CN110860694 A CN 110860694A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 131
- 239000012530 fluid Substances 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 238000009461 vacuum packaging Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000012256 powdered iron Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000002173 cutting fluid Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 description 13
- 239000002250 absorbent Substances 0.000 description 13
- 239000011358 absorbing material Substances 0.000 description 7
- 238000011161 development Methods 0.000 description 5
- 230000005294 ferromagnetic effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- 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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/045—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by other means than ball or jet milling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
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Abstract
The invention provides a preparation device and a preparation method of superfine flaky iron powder, which comprises a cutting fluid circulating separator, an automatic dryer, a vacuum packaging machine, a grinding fluid spraying device and an automatic grinding machine which are respectively electrically connected with a control mechanism, wherein a high-purity iron block is placed on a base for fixing during preparation, the automatic grinding machine is started to grind the high-purity iron block into the superfine flaky iron powder, and the grinding fluid spraying device is used for spraying the grinding fluid to spray the grinding fluid during the grinding process; then the superfine flaky iron powder is separated from the grinding fluid by a grinding fluid circulating separator, and the superfine flaky iron powder enters an automatic dryer; decomposing and volatilizing the grinding fluid remained in the superfine flaky iron powder to finish the drying of the superfine flaky iron powder; the superfine iron powder is conveyed into a vacuum packaging machine through a conveying belt for packaging, so that the problems that the appearance control in the existing superfine iron powder preparation process is inconvenient, the iron powder is easy to oxidize in the processing process, and the electromagnetic wave absorption effect is influenced are solved.
Description
Technical Field
The invention belongs to the technical field of superfine flaky iron powder preparation, and particularly relates to a preparation method and preparation equipment of superfine flaky iron powder.
Background
In recent years, with the rapid development of electronic technologies, technologies such as radar and radio are widely applied to relevant fields such as military and civil communication, and the wide application of electromagnetic waves in a GHz frequency band brings many problems, wherein electromagnetic interference has attracted more and more attention as a special environmental pollution, and the development of various electromagnetic wave absorbing materials is crucial to solve the problem of electromagnetic interference. At present, the effective absorption components of the electromagnetic wave absorbing material, also called absorbents, have different shapes, such as spheres, lines, sheets and the like. The spherical absorbent is easy to form point contact in the matrix, the linear absorbent is in line contact in the matrix, the flaky absorbent is easy to tile in the matrix and form surface contact more easily, so that the contact area between the flaky absorbent and the spherical absorbent is larger than that of the spherical absorbent and the tubular absorbent, and a network structure is formed more easily, thereby greatly reducing the using amount of the flaky absorbent in the wave-absorbing material and reducing the cost of the wave-absorbing material. There are many kinds of absorbents such as ferrites, ferromagnetic metal powders, carbon materials, conductive polymers, and the like, among which ferrites and ferromagnetic metal powders are mainly available, and ferromagnetic metal powders have better temperature stability and relatively high saturation magnetization and curie temperature compared to ferrites. If the flake ferromagnetic metal powder is used, the wave absorbing effect is better than that of the spherical ferromagnetic metal powder. Therefore, the preparation of a sheet-like absorbent is of great importance in the development of absorbent materials.
Through search, chinese patent application No. CN201811379053.3 discloses a method for producing superfine carbonyl iron powder by using plasma, which can prepare superfine carbonyl iron powder, but cannot control the morphology of particles, and affects the yield. The Chinese patent application No. CN201810871286.9 discloses a preparation method of superfine iron powder, which can also prepare superfine iron powder, but the shape of the superfine iron powder is spherical particles, the absorption area is smaller, the dosage of an absorbent is increased, and the wave absorption cost is further increased. Meanwhile, the iron powder is very easy to oxidize, and if the control is improper in the processing process, the superfine iron powder can be oxidized to generate iron oxide, so that the wave absorbing effect is influenced. Therefore, the development of a process for preparing the superfine flaky iron powder is particularly important for the development of wave-absorbing materials.
The existing method is used for preparing particles, the specific surface area is small, and the lamellar specific surface area of the tablet prepared by the existing method is large, and the using effect is good.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a preparation apparatus for superfine flaky iron powder, which is composed of a cutting fluid circulating separator, an automatic dryer, a vacuum packaging machine, a grinding fluid spraying device and an automatic grinding machine respectively controlled by a control mechanism. Grinding the high-purity iron blocks into superfine flaky iron powder by an automatic grinding machine according to the requirement, spraying grinding fluid by using the grinding fluid spraying device in the grinding process for cooling and isolating air so as to avoid oxidation of the iron powder in the grinding process, and simultaneously dispersing and wrapping the ground iron powder in the grinding fluid so as to avoid oxidation and agglomeration of the iron powder in the grinding process; and then the grinding fluid containing the superfine flaky iron powder is separated in a grinding fluid circulating and separating system, the grinding fluid is recycled, the consumption of the grinding fluid in the production process is reduced, and then the superfine flaky iron powder is dried under the conditions of proper temperature and weak oxidizing atmosphere to complete the decomposition and volatilization of the oil-based grinding fluid remained in the iron powder.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a preparation equipment of superfine flaky iron powder, includes base, automatic drying-machine, vacuum packaging machine and automatic grinding machine, automatic grinding machine is installed to the top of base, automatic grinding machine's side still installs the grinding fluid spray set rather than supporting use, grinding fluid spray set still communicates through the pipeline has grinding fluid circulation separating centrifuge, automatic drying-machine is installed and is used for accomplishing the stoving of iron powder in the position that is close to grinding fluid circulation separating centrifuge, vacuum packaging machine installs the encapsulation that is used for accomplishing the iron powder in the position that is close to automatic drying-machine, cut liquid circulation separating centrifuge, automatic drying-machine, vacuum packaging machine, grinding fluid spray set and automatic grinding machine and still respectively electric connection have a control mechanism who is used for operation control.
Furthermore, the grinding head of the automatic grinding machine is made of diamond or hexagonal boron nitride materials, the grinding speed of the grinding head is automatically controlled by the control mechanism, and meanwhile, the grinding fluid spraying device is used for spraying grinding fluid for cooling and isolating air in the grinding process, so that the oxidation of the iron powder in the grinding process is avoided.
Further, the automatic dryer is composed of a heating element, a temperature controller, an atmosphere regulator and a conveyor belt, wherein the heating element is a resistance wire, an infrared heater or a microwave heater.
Further, the vacuum packaging machine is composed of an automatic metering device and a vacuum packaging machine and is used for carrying out equivalent weighing and vacuum packaging on the iron powder dried by the automatic dryer.
A preparation method of superfine flaky iron powder comprises the following steps:
s1, placing a high-purity iron block with the content of 99.5% on a base, fixing, starting an automatic grinding machine to grind the high-purity iron block into superfine flaky iron powder, and spraying grinding fluid to spray the grinding fluid by using a grinding fluid spraying device in the grinding process;
s2, separating the superfine flaky iron powder from the grinding fluid containing the superfine flaky iron powder prepared in the step S1 in a grinding fluid circulating separator, conveying the grinding fluid to a grinding fluid spraying device through a pipeline for recycling, and feeding the superfine flaky iron powder into an automatic dryer;
s3, controlling the drying temperature of the automatic dryer to be 350 ℃ through a control mechanism, and simultaneously controlling the oxygen content in the automatic dryer to be 10-20mg/L, so that the grinding fluid with the oil base remained in the superfine flaky iron powder is decomposed and volatilized, and the superfine flaky iron powder is dried;
and S4, conveying the superfine flaky iron powder dried by the S3 into a vacuum packaging machine through a vacuum conveying belt or a conveying belt under the protection of nitrogen for packaging, and vacuum sub-packaging the superfine flaky iron powder into bags of 50 g/bag.
Compared with the prior art, the invention has the following advantages:
the superfine flaky iron powder preparation equipment is formed by respectively controlling the grinding fluid circulating separator, the automatic dryer, the vacuum packaging machine, the grinding fluid spraying device and the automatic grinding machine through the control mechanism. Grinding the high-purity iron blocks into superfine flaky iron powder by an automatic grinding machine according to the requirement, spraying grinding fluid by using the grinding fluid spraying device in the grinding process for cooling and isolating air so as to avoid oxidation of the iron powder in the grinding process, and simultaneously dispersing and wrapping the ground iron powder in the grinding fluid so as to avoid oxidation and agglomeration of the iron powder in the grinding process; then the grinding fluid containing the superfine flaky iron powder is separated in a grinding fluid circulating and separating system, the grinding fluid is recycled, the consumption of the grinding fluid in the production process is reduced, and then the superfine flaky iron powder is dried under the conditions of proper temperature and weak oxidizing atmosphere to complete the decomposition and volatilization of the oil-based grinding fluid remained in the iron powder; the vacuum subpackaging of the final product in a product collecting system is completed, the equipment and the prepared superfine flaky iron powder have the advantages of fine particles, controllable size, flaky shape, simple process, short flow, high efficiency, small occupied space, low energy consumption, convenience for reducing the production cost of the electromagnetic wave absorbing material, economy and practicability.
Drawings
FIG. 1 is a schematic view of the overall apparatus of the present invention;
fig. 2 is an SEM image of the ultra-fine flaky iron powder prepared by the present invention.
Description of reference numerals:
1-a base; 2-grinding fluid circulation separator; 3-automatic drying machine; 4-vacuum packaging machine; 5-grinding fluid spraying device; 6-automatic grinding machine; 7-control mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a technical solution: the utility model provides a preparation equipment of superfine flaky iron powder, includes base 1, automatic drying-machine 3, vacuum packaging machine 4 and automatic grinding machine 6, automatic grinding machine 6 is installed to the top of base 1, automatic grinding machine 6's side still installs the grinding fluid spray set 5 rather than supporting use, automatic grinding machine 6's bistrique is made by diamond or hexagonal boron nitride material, just the grinding speed of bistrique is by 7 automatic control of control mechanism, utilizes at the grinding process simultaneously grinding fluid spray set 5 sprays the grinding fluid and is used for cooling down and isolated air, avoids iron powder grinding process oxidation.
The grinding fluid spraying device 5 is also communicated with a grinding fluid circulating separator 2 through a pipeline, and the grinding fluid circulating separator 2 is used for separating the grinded iron powder from the grinding fluid to achieve the effect of recycling the grinding fluid.
The automatic dryer 3 is composed of a heating element, a temperature controller, an atmosphere regulator and a conveyor belt, the heating element is a resistance wire, an infrared heater or a microwave heater, and the automatic dryer 3 is arranged at a position close to the grinding fluid circulating separator 2 and used for drying iron powder.
The vacuum packaging machine 4 is installed at a position close to the automatic dryer 3 and used for packaging iron powder, and the vacuum packaging machine 4 is composed of an automatic metering device and a vacuum packaging machine and used for weighing the iron powder dried by the automatic dryer 3 in an equivalent manner and packaging the iron powder in a vacuum manner.
The liquid cutting circulation separator 2, the automatic dryer 3, the vacuum packaging machine 4, the grinding liquid spraying device 5 and the automatic grinding machine 6 are also respectively and electrically connected with a control mechanism 7 for operation control, and the control of the working process of the whole equipment is completed through the control mechanism 7.
The preparation method of the preparation equipment of the superfine flaky iron powder in the embodiment of the invention comprises the following steps:
s1, placing a high-purity iron block with the content of 99.5% on a base, fixing the high-purity iron block, starting an automatic grinding machine to grind the high-purity iron block into superfine flaky iron powder, spraying grinding fluid to the grinding machine by using a grinding fluid spraying device in the grinding process, spraying the grinding fluid by using the grinding fluid spraying device for cooling and isolating air, avoiding oxidation of the iron powder in the grinding process, and simultaneously dispersing and wrapping the ground iron powder in the grinding fluid to avoid oxidation and agglomeration of the iron powder in the grinding process;
s2, separating the superfine flaky iron powder from the grinding fluid containing the superfine flaky iron powder prepared in the step S1 in a grinding fluid circulating separator, conveying the grinding fluid to a grinding fluid spraying device through a pipeline for recycling, and feeding the superfine flaky iron powder into an automatic dryer;
s3, controlling the drying temperature of the automatic dryer to be 350 ℃ through a control mechanism, and simultaneously controlling the oxygen content in the automatic dryer to be 10-20mg/L, so that the grinding fluid with the oil base remained in the superfine flaky iron powder is decomposed and volatilized, and the superfine flaky iron powder is dried;
and S4, conveying the superfine flaky iron powder dried by the S3 into a vacuum packaging machine 4 through a vacuum conveying belt or a conveying belt under the protection of nitrogen for packaging, and vacuum packaging the superfine flaky iron powder into bags with the weight of 50 g/bag.
Fig. 2 is an SEM image of the superfine flaky iron powder prepared by the present invention, and it can be seen from the SEM image that the iron powder particles prepared in this embodiment are all flaky, and the size is mostly 5-30 μm, which satisfies the requirement of the wave-absorbing material for the superfine flaky iron powder.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A preparation equipment of superfine flaky iron powder is characterized in that: including base (1), automatic drying-machine (3) and automatic grinding machine (6), automatic grinding machine (6) are installed to the top of base (1), grinding fluid spray set (5) rather than supporting use are still installed to the side of automatic grinding machine (6), grinding fluid spray set (5) still communicate through the pipeline has grinding fluid circulation separating centrifuge (2), install in the position that is close to grinding fluid circulation separating centrifuge (2) in automatic drying-machine (3) and be used for accomplishing the stoving of iron powder, it still has control mechanism (7) that are used for operation control to cut fluid circulation separating centrifuge (2), automatic drying-machine (3), grinding fluid spray set (5) and automatic grinding machine (6) electric connection respectively.
2. The apparatus for preparing ultra-fine flaky iron powder according to claim 1, further comprising a vacuum packaging machine (4), wherein the vacuum packaging machine (4) is composed of an automatic weighing device and a vacuum packaging machine, and is installed at a position close to the automatic dryer (3), and the vacuum packaging machine (4) is also electrically connected to the control mechanism (7) for equally weighing and vacuum packaging the iron powder dried by the automatic dryer (3).
3. The equipment for preparing the superfine flaky iron powder according to claim 1, wherein a grinding head of the automatic grinding machine (6) is made of diamond or hexagonal boron nitride material, the grinding speed of the grinding head is automatically controlled by a control mechanism (7), and grinding fluid is sprayed by the grinding fluid spraying device (5) during the grinding process for cooling and isolating air, so that the oxidation of the iron powder during the grinding process is avoided.
4. The apparatus for the preparation of ultra fine powdered iron flakes according to claim 1, wherein said automatic dryer (3) is comprised of a heating element, a temperature controller, an atmosphere regulator and a conveyor belt, said heating element being a resistance wire, an infrared heater or a microwave heater.
5. The preparation method of the superfine flaky iron powder is characterized by comprising the following steps of:
s1, placing a high-purity iron block with the content of 99.5% on a base, fixing, starting an automatic grinding machine to grind the high-purity iron block into superfine flaky iron powder, and spraying grinding fluid to spray the grinding fluid by using a grinding fluid spraying device in the grinding process;
s2, separating the superfine flaky iron powder from the grinding fluid containing the superfine flaky iron powder prepared in the step S1 in a grinding fluid circulating separator, conveying the grinding fluid to a grinding fluid spraying device through a pipeline for recycling, and feeding the superfine flaky iron powder into an automatic dryer;
s3, controlling the drying temperature of the automatic dryer to be 350 ℃ through a control mechanism, and simultaneously controlling the oxygen content in the automatic dryer to be 10-20mg/L, so that the grinding fluid with the oil base remained in the superfine flaky iron powder is decomposed and volatilized, and the superfine flaky iron powder is dried;
and S4, conveying the superfine flaky iron powder dried by the S3 into a vacuum packaging machine through a vacuum conveying belt or a conveying belt under the protection of nitrogen for packaging, and performing vacuum sub-packaging on the superfine flaky iron powder into bags.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168225.7A CN110860694A (en) | 2019-11-25 | 2019-11-25 | Preparation method and preparation equipment of superfine flaky iron powder |
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| CN201911168225.7A CN110860694A (en) | 2019-11-25 | 2019-11-25 | Preparation method and preparation equipment of superfine flaky iron powder |
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| 常程等: "自动磨削机磨削控制方法的研究", 《机械工程师》 * |
| 高芳乾等: "研磨介质对片状羰基铁结构及电磁性能的影响", 《中国粉体技术》 * |
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