WO2010047175A1 - 粉体の分級方法 - Google Patents
粉体の分級方法 Download PDFInfo
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- WO2010047175A1 WO2010047175A1 PCT/JP2009/064869 JP2009064869W WO2010047175A1 WO 2010047175 A1 WO2010047175 A1 WO 2010047175A1 JP 2009064869 W JP2009064869 W JP 2009064869W WO 2010047175 A1 WO2010047175 A1 WO 2010047175A1
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- powder
- classifier
- gas
- classification method
- classification
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/086—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
Definitions
- the present invention relates to a powder classification method for effectively classifying a powder having a particle size distribution at a desired classification point (particle size).
- a classification method is known in which a fluid auxiliary such as alcohol is added in advance when powder such as glassy blast furnace slag is classified into fine powder and coarse powder (for example, see Patent Document 1).
- a fluid auxiliary such as alcohol
- the particles are adsorbed and aggregated to form aggregated particles having a large particle size. It is prevented from being formed and the classification efficiency is prevented from being lowered.
- a ceramic used as a dielectric of a ceramic multilayer capacitor is manufactured by sintering a fine powder of barium titanate (BaTiO 3 ) having an extremely small average particle diameter of 0.7 ⁇ m. .
- barium titanate BaTiO 3
- Such fine powder can be obtained by classifying the powder as a raw material, for example, by centrifugation, but in these conventional classification methods, the raw material powder adheres to each part in the classifier and the raw material is charged. Since the mouth and the jet of high-pressure gas are blocked, the classification performance is deteriorated and it is difficult to operate for a long time.
- An object of the present invention is to provide a powder classification method capable of performing classification efficiently without attaching the powder to the classifier even when the powder having a particle size of less than 1 ⁇ m is classified. It is.
- the powder classification method of the present invention is a powder classification method using a fluid classifier, a mixing step of mixing powder and an auxiliary agent comprising alcohols, and the powder mixed in the mixing step In the fluid classifier, a heating step for heating the gas, a supply step for supplying the gas heated in the heating step to the fluid classifier, and the powder in the fluid classifier And a classification step of classifying the particles based on the particle size.
- the powder mixed with the auxiliary agent is charged into the fluid classifier and the heated gas is supplied into the fluid classifier. Even when this classification is performed, the classification can be performed efficiently without adhering powder in the fluid classifier.
- FIG. 1 is a schematic configuration diagram showing the configuration of a fluid classifier used by the powder classification method according to this embodiment.
- the classifier 2 includes a classifier (fluid classifier) 4 that classifies powders that are input as a raw material by a swirling airflow generated inside, and a feeder 6 that inputs the powders to the classifier 4.
- a blower 8 that supplies high-pressure gas to the classifier 4 and a first heater 10 that heats the supplied high-pressure gas to a predetermined temperature are provided.
- the classifier 2 also includes an intake blower 12 that sucks and collects fine powder separated to a desired classification point or less together with the gas in the classifier 4, and the air sucked by the negative pressure generated in the classifier 4. It has the 2nd heater 14 which heats (normal-pressure gas), and the collection
- the classifier 4 having a substantially conical shape is installed so that the apex of the cone faces downward, and a centrifuge chamber 20 (see FIG. 2), which will be described in detail later, is formed in the upper part of the classifier 4. ing.
- a centrifuge chamber 20 see FIG. 2
- the atmospheric air as the atmospheric gas existing outside the classifier 4 and the high-pressure gas from the blower 8 are supplied, and the powder to be classified is fed from the feeder 6. .
- the feeder 6 has a screw (not shown) inside, and by rotating the screw, the powder contained inside can be quantitatively sent out.
- the delivered powder is introduced into the classifier 4 from an inlet 26 (see FIG. 2) provided on the upper surface of the classifier 4.
- the powder accommodated in the feeder 6 is previously mixed with the adjuvant mentioned later for details.
- the blower 8 compresses the atmosphere to generate high-pressure gas, and supplies the high-pressure gas into the classifier 4 through the first heater 10.
- the first heater 10 has a pipe through which high-pressure gas passes, and heating means made of a filament, an erotic fin, or the like is installed in the pipe.
- the heating means heats the high-pressure gas passing through the pipe to a predetermined temperature and removes moisture contained in the high-pressure gas.
- another dehydrating means for removing moisture contained in the high-pressure gas may be separately provided between the blower 8 and the classifier 4, or a filter for removing dust or the like may be appropriately provided.
- the suction blower 12 collects the fine powder separated by the classifier 4 by sucking together with the gas present in the classifier 4 from a suction port 32 (see FIG. 2) provided at the center of the upper surface of the classifier 4. .
- a filter such as a bag filter may be appropriately provided between the suction port 32 and the suction blower 12.
- the classification device 2 since the classification device 2 according to this embodiment includes the second heater 14 that heats the sucked normal pressure gas, the temperature of the swirling airflow in the centrifugal separation chamber 20 is heated to a predetermined temperature. be able to. Similar to the first heater 10, the second heater 14 has a pipe through which atmospheric gas passes, and heating means such as a filament and an erotic fin is installed in the pipe.
- the collection container 16 is installed at the lowermost part of the classifier 4 and collects the coarse powder that has fallen along the slope of the conical portion of the classifier 4 after being centrifuged in the centrifuge chamber 20.
- FIG. 2 is a longitudinal sectional view of a plane including the central axis of the classifier 4
- FIG. 3 is a transverse sectional view at the position of the centrifuge chamber 20 by a plane perpendicular to the central axis.
- an inlet 26 and an ejection nozzle 30 that are not originally shown in FIG. They are indicated by virtual lines and dotted lines, respectively. Further, only two ejection nozzles 30 are shown for explanation.
- an upper disk-shaped member 22 having a flat disk shape and a lower disk-shaped member 24 having a hollow disk shape are maintained at a predetermined interval in the upper part of the classifier 4.
- the cylindrical centrifuge chamber 20 is formed between the two disk-shaped members.
- an input port 26 through which the powder input from the above-described feeder 6 passes is formed above the centrifugal separation chamber 20, an input port 26 through which the powder input from the above-described feeder 6 passes is formed.
- a plurality of guide vanes 40 are arranged at equal intervals on the outer periphery of the centrifuge chamber 20, and below the centrifuge chamber 20, on the outer peripheral wall of the lower disk-shaped member 24.
- a reclassification zone 28 is formed along which the powder that has been centrifuged and then descended from the centrifuge chamber 20 is again sprayed into the centrifuge chamber 20.
- an ejection nozzle 30 that ejects the high-pressure gas supplied from the blower 8 is arranged so that the ejection direction is substantially the same as the tangential direction of the outer peripheral wall.
- the ejection nozzle 30 ejects a high-pressure gas to disperse the powder introduced from the insertion port 26 and supplies the gas into the centrifuge chamber 20 as an auxiliary. Further, fine powder existing in the reclassification zone 28 is sprayed back into the centrifugal separation chamber 20.
- six ejection nozzles 30 are arranged on the outer peripheral wall of the reclassification zone 28. However, this is an example, and the arrangement position and number of the ejection nozzles 30 have a degree of freedom. is there.
- an inlet 32 for sucking and collecting fine powder separated from coarse powder by centrifugation.
- the centrifugally separated coarse powder descends from the reclassification zone 28 on the slope of the conical portion of the classifier 4 and is discharged from the discharge port 34 provided at the lowermost part of the classifier 4 to be collected in the above-described collection container 16. Housed inside.
- a guide vane 40 that can form a swirling airflow in the centrifuge chamber 20 and adjust the swirling speed of the swirling airflow is disposed on the outer periphery of the centrifuge chamber 20. Yes.
- 16 guide vanes 40 are arranged.
- the guide vane 40 is pivotally supported between the upper disk-shaped member 22 and the lower disk-shaped member 24 by a rotating shaft 40a, and is not illustrated by a pin 40b.
- the guide vanes 40 can be simultaneously rotated by a predetermined angle by rotating the rotating plate.
- the flow rate of the atmospheric gas passing through the interval in the direction of the white arrow shown in FIG. As a result, the flow velocity of the swirling airflow in the centrifugal separation chamber 20 can be changed.
- the classification performance (specifically, the classification point) of the classifier 4 according to this embodiment can be changed.
- the normal pressure gas that passes through the gaps between the guide vanes 40 is a normal pressure gas that has been heated to a predetermined temperature by the second heater 14 in advance.
- the powder to be classified is mixed with alcohol as an auxiliary agent (step S10).
- the type of alcohol to be used may be appropriately selected according to the type of powder to be classified, but the classification target is barium titanate as in the powder classification method according to this embodiment.
- ethanol C 2 H 5 OH
- the additive addition amount and the mixing method may be appropriately selected according to the type of powder, but in the powder classification method according to this embodiment, the mass relative to the powder to be classified.
- mixing is performed using a mixer.
- the amount added is about 7% by mass ratio, the ratio is not restrictive.
- HI-X (Nisshin Engineering Co., Ltd.) is used for the mixer.
- the suction of the gas is started by the suction blower 12 (step S12). Since the gas in the centrifuge chamber 20 is sucked from the suction port 32 provided in the upper center of the centrifuge chamber 20, the air pressure at the center of the centrifuge chamber 20 becomes relatively low. Due to the negative pressure generated in the centrifuge chamber 20 in this way, atmospheric air, which is a normal pressure gas, is sucked from between the guide vanes 40 arranged along the outer periphery of the centrifuge chamber 20. (Step S16). Note that the normal pressure gas sucked into the centrifugal separation chamber 20 is heated in advance to a predetermined temperature by passing through a pipe provided in the second heater 14 (step S14).
- the normal pressure gas is sucked from between the guide vanes 40, thereby forming a swirling airflow having a flow velocity determined according to the rotation angle of the guide vanes 40.
- the atmospheric gas to be sucked is heated to at least 150 ° C. or higher so that the temperature of the swirling air flow in the centrifugal separation chamber 20 is about 140 ° C. ing.
- step S18 supply of high-pressure gas to the inside of the centrifugal separation chamber 20 of the classifier 4 is started using the blower 8.
- the high-pressure gas injected from the blower 8 is heated to a predetermined temperature by the first heater 10 (step S18).
- the 1st heater 10 heats the said high pressure gas to at least 150 degreeC or more so that the temperature of the whirling airflow in the centrifuge chamber 20 may be about 140 degreeC similarly to the 2nd heater 14.
- the high-pressure gas heated to a predetermined temperature is ejected from a plurality of ejection nozzles 30 provided on the outer peripheral wall of the centrifugal separation chamber 20, and is supplied into the centrifugal separation chamber 20 (step S20).
- the mixed powder sent quantitatively from the feeder 6 is charged.
- the centrifuge chamber 20 is charged through the mouth 26 (step S22).
- the mixed powder introduced from the inlet 26 moves around the outer periphery of the centrifuge chamber 20 at high speed. It collides with a swirling swirling airflow and is dispersed rapidly.
- ethanol (boiling point 78 ° C.) mixed between the fine particles of the powder is rapidly vaporized to promote the dispersion of the powder.
- the powder dispersed in units of fine particles in this way is swirled several times in the centrifuge chamber 20 without adhering to the surfaces of the upper disc-like member 22 and the lower disc-like member 24 constituting the centrifuge chamber 20. Then, classification is performed based on the particle size of the powder (step S24).
- fine powder having a particle size equal to or smaller than a desired classification point is collected in the central portion of the centrifugal separation chamber 20, and the respective centers of the upper disk-shaped member 22 and the lower disk-shaped member 24.
- the gas is sucked from the suction port 32 together with the gas sucked by the suction blower 12 (step S26).
- the coarse powder having a particle size exceeding the classification point is concentrated on the outer periphery of the centrifugal separation chamber 20 by the centrifugal action in the centrifugal separation chamber 20 and then descends from the reclassification zone 28 to the conical portion of the classifier 4. Then, it is discharged from the discharge port 34 and accommodated in the collection container 16.
- the high-temperature whirling air swirling in the centrifugal separation chamber 20 and the powder effectively dispersed by the effect of the auxiliary agent are centrifuged without adhering to the surfaces of the components constituting the centrifugal separation chamber 20. It turns in the separation chamber 20 and is efficiently classified into fine powder below the desired classification point and the remaining coarse powder.
- assistant vaporizes, it is not contained in the collect
- the gas supplied is heated to about 150 ° C. so that the swirling airflow in the classifier 4 is about 140 ° C., but this is only an example, and the classifier 4 Even when the supplied gas is heated so that the temperature of the swirling air flow is not less than the boiling point of the auxiliary mixed with the powder and not more than 200 ° C., the same effect is exhibited and the classification is performed efficiently. be able to.
- Table 1 shows that (1) only fine powder of barium titanate was centrifuged by a classifier with an in-machine temperature of 140 ° C., and (2) a mixed powder of barium titanate fine powder and ethanol at an in-machine temperature of 60 ° C. Three experimental results are shown: a result of centrifugation by a classifier, and (3) a result of centrifugation of a mixed powder of barium titanate fine powder and ethanol by a classifier having an in-machine temperature of 140 ° C.
- the powder to be classified is mixed with ethanol as an auxiliary agent and then put into the centrifuge chamber in the fluid classifier. Since a high-speed high-speed swirling airflow can be formed in the centrifuge chamber by the heated gas, even when a powder having a particle size of less than 1 ⁇ m is classified, the powder is not attached to the fluid classifier. , Classification can be performed efficiently.
- barium titanate is used as an example of the classification target powder.
- the classification target powder may be nickel.
- the normal pressure gas sucked in step S14 is heated by the second heater 14 so that the temperature of the swirling airflow in the centrifugal separator 20 is about 110 ° C., and the swirling airflow is similarly applied in step S18.
- the high pressure gas is heated by the first heater 10 so that the temperature of the gas becomes about 110 ° C.
- step S22 the mixed powder is put into the centrifuge chamber 20.
- ethanol boiling point 78 ° C.
- the temperature of the swirling airflow is about 110 ° C.
- FIG. 5 is a flowchart for explaining a powder classification method according to the second embodiment.
- the powder to be classified is immersed in the auxiliary agent (step S30).
- nickel powder is sufficiently immersed in ethanol as an auxiliary agent.
- the auxiliary agent is vaporized by drying the powder immersed in the auxiliary agent (step S32).
- steps S34 to S48 are performed. Since these processes are the same as the processes shown in steps S12 to S26 of the flowchart of FIG. 4, description thereof will be omitted.
- the normal pressure gas sucked so that the temperature of the swirling airflow becomes about 110 ° C. in step S36 is heated by the second heater 14, and the step Similarly, in S40, the high-pressure gas is heated by the first heater 10 so that the temperature of the swirling airflow is about 110 ° C.
- the powder classification method according to the present embodiment will be described more specifically using examples.
- the amount of the auxiliary agent added when mixing the nickel powder and the auxiliary agent is partially reduced by evaporation during and after the mixing with the powder. Therefore, in the following embodiments, when the mixed powder is put into the feeder 6 of the classifier 2, the amount of the auxiliary contained in the mixed powder is expressed as the adsorbed amount of the auxiliary.
- Example 1 In Example 1, a classifier equipped with heat insulation equipment was used, the amount of gas sucked by the suction blower was 1.0 m 3 / min, and the pressure of the high-pressure gas generated by the blower was 0.8 MPa.
- nickel powder composed of fine powder with a median diameter of 0.4 ⁇ m was used as the classification target powder, ethanol was mixed with the nickel fine powder, and ethanol was adsorbed. A mixed powder having an amount of 0.25 to 3.7% by mass was obtained.
- the input amount of the powder to the classifier was set to 200 g / hour, and the temperature in the classifier was set to 110 ° C.
- Table 2 shows the relationship between the adsorption amount (mass ratio) of ethanol and the fine powder yield in the mixed powder.
- nickel fine powder yield can be increased by adsorbing ethanol as an auxiliary agent.
- Example 2 In Example 2, a classifier equipped with heat insulation equipment was used, the amount of gas sucked by the suction blower was 1.0 m 3 / min, and the pressure of the high-pressure gas generated by the blower was 0.8 MPa.
- nickel powder composed of fine powder having a median diameter of 0.7 ⁇ m was immersed in ethanol as an auxiliary agent as powder to be classified. After several hours, ethanol was vaporized and dried to obtain nickel powder having an ethanol adsorption amount of 0.09 to 0.7% by mass ratio.
- the input amount of the powder to the classifier was set to 200 g / hour, and the temperature in the classifier was set to 110 ° C. Table 3 shows the relationship between the amount of ethanol adsorbed (mass ratio) and the fine powder yield in the mixed powder after drying.
- the nickel fine powder yield can be increased by immersing ethanol as an auxiliary agent and then drying.
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Abstract
Description
実施例1においては、断熱装備を施した分級機を用い、吸入ブロアで吸引する気体量を1.0m3/分、ブロアが生成する高圧気体の圧力を0.8MPaとした。また、この実験においては、分級対象の粉体として、中位径が0.4μmの微粉末から構成されるニッケル粉体を用い、ニッケルの微粉末に助剤としてエタノールを混合し、エタノールの吸着量が質量比で0.25~3.7%の混合粉体を得た。なお、分級機への粉体の投入量は200g/時間に設定し、分級機内の温度を110℃に設定した。表2に混合粉体におけるエタノールの吸着量(質量比)と微粉収率との関係を示す。
実施例2においては、断熱装備を施した分級機を用い、吸入ブロアで吸引する気体量を1.0m3/分、ブロアが生成する高圧気体の圧力を0.8MPaとした。また、この実験においては、分級対象の粉体として、中位径が0.7μmの微粉末から構成されるニッケル粉体を助剤であるエタノールに浸漬させた。数時間経過後、エタノールを気化させ乾燥させ、エタノールの吸着量が質量比で0.09~0.7%のニッケル粉体を得た。なお、分級機への粉体の投入量は200g/時間に設定し、分級機内の温度を110℃に設定した。表3に乾燥後の混合粉体におけるエタノールの吸着量(質量比)と微粉収率との関係を示す。
Claims (8)
- 流体分級機を用いた粉体の分級方法において、
粉体とアルコール類からなる助剤とを混合する混合工程と、
前記混合工程において混合された前記粉体を前記流体分級機に投入する投入工程と、
気体を加熱する加熱工程と、
前記加熱工程において加熱された前記気体を前記流体分級機に供給する供給工程と、
前記流体分級機において、前記粉体を粒径に基づいて分級する分級工程とを含むことを特徴とする粉体の分級方法。 - 前記加熱工程は、前記流体分級機内における温度が前記アルコール類の沸点以上かつ200℃以下となるように前記気体を加熱することを特徴とする請求項1記載の粉体の分級方法。
- 前記供給工程において供給される前記気体は、常圧気体であることを特徴とする請求項1または請求項2記載の粉体の分級方法。
- 前記供給工程において供給される前記気体は、高圧気体であることを特徴とする請求項1または請求項2記載の粉体の分級方法。
- 前記分級工程においては、前記流体分級機内に発生させた旋回気流によって前記粉体を分級することを特徴とする請求項1乃至請求項4の何れか一項に記載の粉体の分級方法。
- 前記アルコール類は、エタノールであることを特徴とする請求項1乃至請求項5の何れか一項に記載の粉体の分級方法。
- 前記粉体は、チタン酸バリウムの粉体であることを特徴とする請求項1乃至請求項6の何れか一項に記載の粉体の分級方法。
- 前記粉体は、ニッケルの粉体であることを特徴とする請求項1乃至請求項6の何れか一項に記載の粉体の分級方法。
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EP09821875.3A EP2351620B1 (en) | 2008-10-24 | 2009-08-26 | Method for classifying powder |
JP2010534747A JP5362734B2 (ja) | 2008-10-24 | 2009-08-26 | 粉体の分級方法 |
US13/123,770 US8925398B2 (en) | 2008-10-24 | 2009-08-26 | Method for classifying powder |
CN200980142347.7A CN102196868B (zh) | 2008-10-24 | 2009-08-26 | 粉体的分级方法 |
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WO2011132301A1 (ja) * | 2010-04-23 | 2011-10-27 | 日清エンジニアリング株式会社 | 粉体の分級方法 |
WO2012124453A1 (ja) * | 2011-03-16 | 2012-09-20 | 株式会社日清製粉グループ本社 | 粉体の分級方法 |
JPWO2012124452A1 (ja) * | 2011-03-16 | 2014-07-17 | 株式会社日清製粉グループ本社 | 粉体の製造方法 |
TWI699240B (zh) * | 2018-03-29 | 2020-07-21 | 日商東邦鈦股份有限公司 | 金屬粉體之製造方法 |
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KR102411930B1 (ko) * | 2015-01-16 | 2022-06-21 | 가부시키가이샤 닛신 세이훈 구루프혼샤 | 분체 분급 장치 |
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- 2009-08-26 EP EP09821875.3A patent/EP2351620B1/en active Active
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JP5785250B2 (ja) * | 2011-03-16 | 2015-09-24 | 株式会社日清製粉グループ本社 | 粉体の分級方法 |
KR101798696B1 (ko) * | 2011-03-16 | 2017-11-16 | 가부시키가이샤 닛신 세이훈 구루프혼샤 | 분체의 제조 방법 |
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WO2012124453A1 (ja) * | 2011-03-16 | 2012-09-20 | 株式会社日清製粉グループ本社 | 粉体の分級方法 |
TWI569877B (zh) * | 2011-03-16 | 2017-02-11 | Nisshin Seifun Group Inc | 粉體的分級方法 |
KR20140016334A (ko) * | 2011-03-16 | 2014-02-07 | 가부시키가이샤 닛신 세이훈 구루프혼샤 | 분체의 분급 방법 |
KR101961966B1 (ko) * | 2011-03-16 | 2019-03-25 | 가부시키가이샤 닛신 세이훈 구루프혼샤 | 분체의 분급 방법 |
TWI699240B (zh) * | 2018-03-29 | 2020-07-21 | 日商東邦鈦股份有限公司 | 金屬粉體之製造方法 |
JPWO2019188149A1 (ja) * | 2018-03-29 | 2021-02-12 | 東邦チタニウム株式会社 | 金属粉体の製造方法 |
JP7145932B2 (ja) | 2018-03-29 | 2022-10-03 | 東邦チタニウム株式会社 | 金属粉体の製造方法 |
KR20230002437A (ko) | 2020-04-14 | 2023-01-05 | 소에이 가가쿠 고교 가부시키가이샤 | 카르복실산 함유 니켈 분말 및 카르복실산 함유 니켈 분말의 제조방법 |
KR20230008044A (ko) | 2020-04-14 | 2023-01-13 | 소에이 가가쿠 고교 가부시키가이샤 | 무기 미분말 제조방법 |
KR20230014073A (ko) | 2021-07-20 | 2023-01-27 | 소에이 가가쿠 고교 가부시키가이샤 | 금속 미분말 제조방법 및 금속 분말 |
Also Published As
Publication number | Publication date |
---|---|
EP2351620B1 (en) | 2017-10-25 |
EP2351620A1 (en) | 2011-08-03 |
US20110219854A1 (en) | 2011-09-15 |
JP5362734B2 (ja) | 2013-12-11 |
CN102196868A (zh) | 2011-09-21 |
KR101576320B1 (ko) | 2015-12-09 |
US8925398B2 (en) | 2015-01-06 |
KR20110084966A (ko) | 2011-07-26 |
EP2351620A4 (en) | 2012-04-11 |
CN102196868B (zh) | 2014-04-23 |
JPWO2010047175A1 (ja) | 2012-03-22 |
TWI498172B (zh) | 2015-09-01 |
TW201016334A (en) | 2010-05-01 |
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