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1. 发明公开

US20230256509A1 SILVER FINE PARTICLE PRODUCTION METHOD AND SILVER FINE PARTICLES 审中-公开
公开(公告)号：US20230256509A1
公开(公告)日：2023-08-17
申请号：US18306669
申请日：2023-04-25
申请人： NISSHIN ENGINEERING INC.
发明人： Shu WATANABE , Shiori SUEYASU , Keitaroh NAKAMURA
IPC分类号： B22F9/12 , B22F1/054 , B22F1/102
CPC分类号： B22F9/12 , B22F1/054 , B22F1/102 , B22F2301/255 , B22F2304/054
摘要： A production method for silver fine particles retain capabilities such as conductivity and make it possible to form wiring at even lower temperatures; and silver fine particles. A silver fine particle production method in which silver powder is used to produce silver fine particles by means of a gas phase method. The silver fine particle production method has a step for supplying an organic acid to the silver fine particles. The gas phase method is, for example, a plasma method or a flame method. The silver fine particles have a surface coating that includes at least a carboxyl group.

2. 发明授权

US11154907B2 Powder classifying apparatus 有权
公开(公告)号：US11154907B2
公开(公告)日：2021-10-26
申请号：US16651236
申请日：2018-09-14
申请人： NISSHIN SEIFUN GROUP INC. , NISSHIN ENGINEERING INC.
发明人： Kenji Jikihara , Yusuke Igawa , Tatsuya Onishi , Toru Yoshikawa , Kazumi Kozawa
IPC分类号： B07B7/08 , B07B7/086 , B07B7/083
摘要： This powder-classifying apparatus has: a centrifugation chamber configured so as to be sandwiched between two opposing members; an air supply unit that supplies air into the centrifugation chamber and generates a swirl flow; a raw material supply unit that supplies raw-material powder into the swirl flow; a fine powder recovery unit having an opening part through which air that includes fine powder classified within the centrifugation chamber is ejected to outside of the centrifugation chamber; a coarse powder recovery unit provided to the outer edge part of the centrifugation chamber, for ejecting classified coarse powder to outside of the centrifugation chamber; and an annular slit provided to at least one of the members that constitute the centrifugation chamber, the slit being provided in a region between the center part of the centrifugation chamber and the outer edge part.

3. 发明授权

US10144060B2 Silver nanoparticles 有权
公开(公告)号：US10144060B2
公开(公告)日：2018-12-04
申请号：US15527947
申请日：2015-11-20
申请人： NISSHIN ENGINEERING INC.
发明人： Shu Watanabe , Keitaroh Nakamura , Shiori Sueyasu
IPC分类号： B22F1/00 , B22F1/02 , B22F9/02 , B22F9/08
摘要： In the present invention, a fine silver particle has a particle diameter of 65-80 nm and has, on the surface of the particle, a thin film comprising a hydrocarbon compound. The fine silver particle has an exothermic peal temperature of 140-155° C. in differential thermal analysis. If d denotes the particle diameter after firing at a temperature of 100° C. for one hour and D denotes the particle diameter before firing, it is preferable for the fine silver particle to have a particle growth rate, as represented by (d−D)/D (%), of 50% or higher.

4. 发明授权

US08960027B2 Method for classifying powder 有权
标题翻译：粉末分级方法
公开(公告)号：US08960027B2
公开(公告)日：2015-02-24
申请号：US13577465
申请日：2010-04-23
申请人： Kazumi Kozawa , Satoshi Akiyama , Kosuke Ando
发明人： Kazumi Kozawa , Satoshi Akiyama , Kosuke Ando
IPC分类号： B07B4/02 , B03B1/02 , B22F1/00 , G01N15/02 , B07B11/04 , B07B7/086 , G01N33/00 , G01N15/04
CPC分类号： B07B4/02 , B07B4/025 , B07B7/086 , B07B11/04 , B22F1/0081 , B22F1/0085 , G01N15/02 , G01N15/042 , G01N2033/0091
摘要： Provided is a method for classifying a powder using a classifier, wherein the method comprises: a mixing step for mixing a powder and an auxiliary agent formed from an alcohol aqueous solution containing 10 to 50 mass % of an alcohol; an introduction step for introducing the powder mixed in the mixing step to the classifier; a heating step for heating a gas; a feed step for feeding the gas heated in the heating step to the classifier; and a classifying step for classifying the powder in the classifier on the basis of grain size.
摘要翻译：本发明提供一种使用分选机对粉末进行分级的方法，其特征在于，包括：混合粉末和由含有10〜50质量％的醇的醇水溶液形成的助剂的混合工序; 引入步骤，用于将在混合步骤中混合的粉末引入分选机; 用于加热气体的加热步骤; 用于将在加热步骤中加热的气体供给到分级器的进料步骤; 以及基于粒度对分级机中的粉末进行分级的分选步骤。

5. 发明授权

US07828999B2 Process and apparatus for producing fine particles 有权
标题翻译：用于生产细颗粒的方法和设备
公开(公告)号：US07828999B2
公开(公告)日：2010-11-09
申请号：US11574785
申请日：2005-09-07
申请人： Kazuhiro Yubuta , Keitaroh Nakamura , Takashi Fujii
发明人： Kazuhiro Yubuta , Keitaroh Nakamura , Takashi Fujii
IPC分类号： B29B9/00
CPC分类号： C01G23/006 , B01J19/088 , B01J2219/0869 , B01J2219/0871 , B01J2219/0877 , B01J2219/0884 , B01J2219/0898 , B82Y30/00 , C01B13/34 , C01F7/027 , C01F7/30 , C01F7/308 , C01G1/00 , C01G1/02 , C01P2004/62 , C01P2004/64 , C09C1/407
摘要： A fine particle producing process introduces a material for producing fine particles into a thermal plasma flame to make a vapor-phase mixture and quenches the vapor-phase mixture to form the fine particles. In the process, the material for producing the fine particles is dispersed or dissolved in a dispersion medium or solvent, preferably containing a combustible material to prepare a dispersion such as a slurry, a colloidal solution or a dissolution solution, the dispersion is made into a form of droplets, or the material for producing the fine particles is dispersed with a carrier gas and a combustible material and the dispersion in a droplet form or the dispersed material is introduced into the thermal plasma flame. In the fine particle producing process and apparatus, a gas of an amount sufficient to quench the vapor-phase mixture is supplied toward a tail of the thermal plasma flame. In the process and apparatus, primary fine particles are introduced into a cyclone to be subjected to cooling and classification and secondary fine particles having a particle size of 100 nm or less which are left upon removal of coarse particles are recovered.
摘要翻译：微细粒子的制造方法将用于制造细颗粒的材料引入热等离子体火焰中以形成气相混合物并使气相混合物骤冷以形成微粒。在此过程中，用于制造细颗粒的材料分散或溶解在优选含可燃材料的分散介质或溶剂中以制备浆料，胶体溶液或溶解溶液等分散体，将其分散成液滴的形式或用于制造细颗粒的材料用载气和可燃材料分散，并且将液滴形式的分散体或分散的材料引入热等离子体火焰中。在微粒生成方法和装置中，向热等离子体火焰的尾部供给足以猝灭气相混合物的量的气体。在该方法和装置中，将初级细颗粒引入旋风分离器中以进行冷却和分级，并回收在除去粗颗粒时残留的粒径为100nm以下的二次细颗粒。

6. 发明申请

US20070092424A1 Method for producing particles, particles, and adsorption apparatus 审中-公开
标题翻译：生产颗粒，颗粒和吸附装置的方法
公开(公告)号：US20070092424A1
公开(公告)日：2007-04-26
申请号：US11541526
申请日：2006-10-03
申请人： Shintaro Kobayashi , Kazuhiro Yubuta
发明人： Shintaro Kobayashi , Kazuhiro Yubuta
IPC分类号： C01B25/32
CPC分类号： B01J20/048 , B01J2/04 , B01J20/282 , B01J20/3028 , C01B25/32
摘要： Disclosed herein are a method for producing particles whereby dense particles (especially, spherical particles) composed of a calcium phosphate-based compound can be efficiently produced at low cost, particles which are produced by the method, and an adsorption apparatus which is produced by using the particles as an adsorbent. The method for producing particles comprises preparing a liquid containing primary particles composed of a calcium phosphate-based compound and a dispersion medium; feeding the liquid into a heated atmosphere in the form of droplets to obtain aggregates of the primary particles by removing the dispersion medium from each of the droplets and then bring the aggregates into a molten state so that each of the aggregates is formed into a spherical shape; and solidifying the aggregates in the molten state to obtain dense secondary particles. The heated atmosphere preferably contains plasma produced by ionization of an ambient gas. Further, the plasma forms a plasma flame in the heated atmosphere; and the droplets are preferably fed into the circumferential portion of the plasma flame
摘要翻译：本发明公开了一种生产颗粒的方法，其中以低成本有效地制造由磷酸钙基化合物构成的致密颗粒（特别是球形颗粒），通过该方法生产的颗粒和通过使用该方法制备的吸附装置颗粒作为吸附剂。制备颗粒的方法包括制备含有由磷酸钙基化合物和分散介质组成的一次粒子的液体; 将液体以液滴的形式进入加热的气氛中，通过从每个液滴中除去分散介质，从而获得初级颗粒的聚集体，然后使聚集体进入熔融状态，使得每个聚集体形成球形 ; 并在熔融状态下凝固聚集体以获得致密的二次颗粒。加热的气氛优选包含通过电离环境气体产生的等离子体。此外，等离子体在加热的气氛中形成等离子体火焰; 并且液滴优选地进料到等离子体火焰的周向部分中

7. 发明申请

US20130329515A1 ROTARY AGITATION TYPE HEAT TREATMENT APPARATUS 有权
标题翻译：旋转式热处理设备
公开(公告)号：US20130329515A1
公开(公告)日：2013-12-12
申请号：US13491064
申请日：2012-06-07
申请人： Masayuki KATAKURA , Hiromitsu SUZUKI , Takahiro GOTO
发明人： Masayuki KATAKURA , Hiromitsu SUZUKI , Takahiro GOTO
IPC分类号： B01F9/02 , B01F15/06
CPC分类号： F27B7/14
摘要： A rotary agitation type heat treatment apparatus includes: a cylindrical member for performing heat treatment on a material to be treated supplied inside the cylindrical member from one end thereof; a rotating unit for rotating the cylindrical member; a heating unit for heating the material supplied inside the cylindrical member; and agitation members arranged in the cylindrical member. Each agitation member has a shaft structure and two or more blades provided on the shaft structure. The cylindrical member and the agitation members are constituted of a ceramic material. The material inside the cylindrical member is heated and the cylindrical member is rotated, so that the material is heat treated while agitated by the agitation members in the cylindrical member, and discharged out from the other end thereof.
摘要翻译：一种旋转搅拌式热处理装置，其特征在于，包括：筒状部件，其从一端向对所述筒状部件供给的被处理材料进行热处理; 用于旋转所述圆筒形构件的旋转单元; 加热单元，用于加热供应到圆柱形构件内部的材料; 以及布置在圆柱形构件中的搅拌构件。每个搅拌构件具有轴结构和设置在轴结构上的两个或更多个叶片。圆柱形构件和搅拌构件由陶瓷材料构成。筒体内的材料被加热并使圆柱形构件旋转，使得材料在由圆柱形构件中的搅拌构件搅动的同时进行热处理，并从其另一端排出。

8. 发明授权

US07727497B2 Method for producing particles, particles, and sintered body 有权
标题翻译：生产颗粒，颗粒和烧结体的方法
公开(公告)号：US07727497B2
公开(公告)日：2010-06-01
申请号：US11463337
申请日：2006-08-09
申请人： Shintaro Kobayashi , Kazuhiro Yubuta
发明人： Shintaro Kobayashi , Kazuhiro Yubuta
IPC分类号： C01F1/00 , C05B19/00
CPC分类号： C01B25/32 , B82Y30/00 , C04B35/447 , C04B35/62665 , C04B2235/3212 , C04B2235/528 , C04B2235/5296 , C04B2235/5445 , C04B2235/5454 , C04B2235/72
摘要： Disclosed herein are a particle production method whereby spherical fine particles of a crystalline calcium phosphate-based compound can be efficiently produced at low cost, fine particles (especially, spherical particles) with good flowability produced by the particle production method, and a high-quality sintered body obtained by sintering a molded body of the particles. The particle production method comprises a first step of mixing a first substance containing phosphorus and a second substance containing calcium so that the phosphorus and the calcium are present in a predetermined mole ratio and feeding, into a heated atmosphere, droplets of a slurry containing an amorphous reaction product, obtained by the reaction between the first substance and the second substance, to bring the reaction product into a gaseous state; and a second step of crystallizing the reaction product in the gaseous state to obtain particles mainly composed of a calcium phosphate-based compound containing phosphorus and calcium in the predetermined mole ratio. The heated atmosphere preferably contains plasma produced by ionization of an ambient gas.
摘要翻译：这里公开了一种颗粒制造方法，其中可以以低成本有效地制造结晶磷酸钙基化合物的球形细颗粒，通过颗粒生产方法产生的具有良好流动性的细颗粒（特别是球形颗粒）和高质量通过烧结颗粒的成形体而获得的烧结体。所述粒子的制造方法包括：混合含有磷的第一物质和含有钙的第二物质的第一步骤，使得所述磷和钙以预定的摩尔比率存在，并且向加热的气氛中加入含有非晶态通过第一物质和第二物质之间的反应获得的反应产物，使反应产物进入气态; 和使气态的反应产物结晶的第二步骤，得到主要由含磷和钙的磷酸钙基化合物以预定摩尔比组成的颗粒。加热的气氛优选包含通过电离环境气体产生的等离子体。

9. 发明授权

US07582135B2 Process for producing ultrafine particles 有权
标题翻译：生产超微粒子的方法
公开(公告)号：US07582135B2
公开(公告)日：2009-09-01
申请号：US11580877
申请日：2006-10-16
申请人： Keitaroh Nakamura , Takashi Fujii
发明人： Keitaroh Nakamura , Takashi Fujii
IPC分类号： B22F9/14
CPC分类号： B22F9/14 , B22F2998/00 , Y10S977/895 , B22F2202/13 , B22F1/0018 , B22F1/02 , B22F2201/30
摘要： The ultrafine particle producing process introduces materials for producing ultrafine particles into a thermal plasma flame under reduced pressure to form a vapor-phase mixture, introduces a reactive gas and a cooling gas toward an end portion of the thermal plasma flame in supply amounts sufficient for quenching the vapor-phase mixture to generate the ultrafine particles and allows the resultant ultrafine particles to come into contact with the reactive gas so as to produce the ultrafine particles whose surfaces are coated with a thin film including one or more components compound derived from decomposition and/or reaction of the reactive gas, for example, an elementary carbon substance and/or a carbon. According to the process, thin film-coated ultrafine particles having high level uniformity in particle size and shape can be produced.
摘要翻译：超细粒子的制造方法将减压粒子的制造用物质引入热等离子体火焰中，形成气相混合物，将反应性气体和冷却气体朝向热等离子火焰的端部引入，供给量足以进行淬火气相混合物以产生超细颗粒并允许所得到的超细颗粒与反应性气体接触，以便产生其表面涂覆有薄膜的超细颗粒，所述薄膜包括一种或多种组分，衍生自分解和/ 或反应气体，例如基本碳物质和/或碳的反应。根据该方法，可以制造粒度和形状均匀性均匀的薄膜被覆微粒。

10. 发明授权

US07258290B2 Jet mill 有权
标题翻译：喷射磨
公开(公告)号：US07258290B2
公开(公告)日：2007-08-21
申请号：US10931973
申请日：2004-09-02
申请人： Kenji Taketomi , Kazumi Kozawa , Satoshi Akiyama
发明人： Kenji Taketomi , Kazumi Kozawa , Satoshi Akiyama
IPC分类号： B02C11/08
CPC分类号： B02C23/10 , B02C19/063
摘要： A jet mill has a disk-shaped hollow part in the interior of the mill body. The hollow part is divided into an annular grinding zone for grinding a material by high-speed swirling air flows supplied through plural air nozzles and an annular classifying zone provided inside the grinding zone and communicated to an exit space for classifying the ground material by the swirling air flows in the grinding zone. An annular first constricted passageway is arranged between the grinding zone and the classifying zone to thereby divide and communicate them, and preferably an annular second constricted passageway between the classifying zone and the inside exit thereof. Accordingly, a jet mill realizing a high classification precision for a desired particle size of ground material with a narrow size distribution and having a simple inner configuration to allow easy cleaning before and after operation can be provided.
摘要翻译：喷射磨机在磨机内部具有盘形中空部分。中空部分被分成用于通过多个空气喷嘴提供的高速旋转空气流以及设置在研磨区内的环形分级区来研磨材料的环形研磨区，并连通到出口空间，用于通过旋转分类磨碎的材料空气在研磨区中流动。在研磨区和分级区之间布置有环形的第一收缩通道，从而将分隔区和分隔区分开并连通，优选地在分级区与其内部出口之间形成环形的第二收缩通道。因此，可以提供具有窄尺寸分布的所需粒度的研磨材料的高分级精度的喷射式粉碎机，并且具有简单的内部构造以允许在操作之前和之后容易清洁。

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