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公开(公告)号：US10092955B2
公开(公告)日：2018-10-09
申请号：US15117855
申请日：2015-02-17
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Yoshitomo Ozaki , Kazuyuki Takaishi , Hideki Ohara , Tomoaki Yoneyama , Osamu Ikeda , Yohei Kudo
摘要： Provided is a method for producing fine nickel powder used as suitable seed crystals for producing nickel powder from a solution containing a nickel ammine sulfate complex. The method for producing nickel powder sequentially includes: a mixing step of adding, to a solution containing a nickel ammine sulfate complex, a dispersant containing a sulfonate and an insoluble solid which is insoluble in the solution to form a mixed slurry; a reduction and precipitation step of charging a reaction vessel with the mixed slurry and then blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions contained in the mixed slurry to form nickel precipitate on a surface of the insoluble solid; and a separation step of separating the nickel precipitate on the surface of the insoluble solid from the surface of the insoluble solid to form nickel powder.
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公开(公告)号：US10434577B2
公开(公告)日：2019-10-08
申请号：US15127816
申请日：2015-03-24
发明人： Kazumichi Yanagisawa , Junhao Zhang , Kazuyuki Takaishi , Tomoaki Yoneyama , Shin-ichi Heguri , Hideki Ohara , Osamu Ikeda , Yohei Kudo , Yoshitomo Ozaki
摘要： Provided is nickel powder obtained by adding seed crystals to a nickel ammine complex solution and performing hydrogen reduction reaction under high temperatures and high pressures, wherein the nickel powder does not produce dust during handling, and a container can be efficiently filled with the nickel powder. The method for producing nickel powder includes: adding seed crystals and a surfactant having a nonionic or anionic functional group to a solution containing a nickel ammine complex to forma mixed slurry; and subjecting the mixed slurry to hydrogen reduction under high temperature and high pressure conditions in a pressure vessel to obtain nickel powder from the mixed slurry.
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公开(公告)号：US10118224B2
公开(公告)日：2018-11-06
申请号：US15114218
申请日：2015-01-27
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Hideki Ohara , Osamu Ikeda , Tomoaki Yoneyama , Yohei Kudo , Yoshitomo Ozaki
摘要： Provided is a method for producing nickel powder from a nickel ammine sulfate complex solution, comprising treatment steps of: (1) a seed crystal production step of producing nickel powder having an average particle size of 0.1 to 5 μm; (2) a seed crystal addition step of adding the nickel powder obtained in the step (1) as seed crystals to form a mixed slurry; (3) a reduction step of forming a reduced slurry containing nickel powder formed by precipitation of a nickel component in the mixed slurry on the seed crystals; and (4) a growth step of performing solid-liquid separation to separate and recover the nickel powder as a solid phase component and then blowing hydrogen gas into a solution prepared by adding the nickel ammine sulfate complex solution to the recovered nickel powder to grow the nickel powder to form high purity nickel powder.
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公开(公告)号：US20170008090A1
公开(公告)日：2017-01-12
申请号：US15119263
申请日：2015-02-09
发明人： Kazumichi Yanagisawa , Junhao Zhang , Osamu Ikeda , Hideki Ohara , Tomoaki Yoneyama , Yohei Kudo , Shin-ichi Heguri
CPC分类号： B22F9/26 , B22F1/0003 , B22F2301/15 , C22B23/0461
摘要： Provided is an efficient method for producing nickel powder from a solution containing a nickel ammine complex, the method including adding seed crystals to a solution containing a nickel ammine complex and subjecting the resulting mixture to hydrogen reduction under high temperatures and high pressures to produce nickel powder, which makes it possible to maintain the quality of the nickel powder produced and reduce the amount of the seed crystals used. The method for producing nickel powder is characterized by adding seed crystals and a dispersant having an anionic functional group to the solution containing a nickel ammine complex to form a mixture slurry, and subjecting the mixture slurry to pressurized hydrogen reduction treatment by blowing hydrogen into the mixture slurry in a high temperature and high pressure atmosphere to cause a reduction reaction, thereby reducing the nickel ammine complex in the mixture slurry to obtain nickel powder.
摘要翻译： 提供了一种从含有镍氨络合物的溶液中制备镍粉的有效方法，该方法包括在含有镍氨络合物的溶液中加入晶种，并将所得混合物在高温高压下进行氢还原，以生产镍粉 ，这使得可以保持所生产的镍粉的质量并减少所用晶种的量。 镍粉的制造方法的特征在于，向含有镍氨络合物的溶液中添加晶种和具有阴离子性官能团的分散剂，形成混合浆料，通过向混合物中吹入氢气使混合物浆料进行加压氢还原处理 浆料在高温高压气氛中引起还原反应，从而还原混合物浆液中的镍氨络合物，得到镍粉。
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公开(公告)号：US20160368059A1
公开(公告)日：2016-12-22
申请号：US15117823
申请日：2015-02-17
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Yoshitomo Ozaki , Kazuyuki Takaishi , Hideki Ohara , Tomoaki Yoneyama , Osamu Ikeda , Yohei Kudo
IPC分类号： B22F9/24
CPC分类号： B22F9/24 , B22F9/26 , B22F2009/245 , B22F2301/15 , B22F2998/10 , B22F2999/00 , B22F2201/013
摘要： Provided is a method for producing fine nickel powder used as suitable seed crystals for producing nickel powder from a solution containing a nickel ammine sulfate complex. The method for producing nickel powder sequentially comprises: a mixing step of adding, to a solution containing a nickel ammine sulfate complex, an insoluble solid which is insoluble in the solution to form a mixed slurry; a reduction and precipitation step of charging a reaction vessel with the mixed slurry and then blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions contained in the mixed slurry to form nickel precipitate on a surface of the insoluble solid; and a separation step of separating the nickel precipitate on the surface of the insoluble solid from the surface of the insoluble solid to form nickel powder.
摘要翻译： 本发明提供一种从含有硫酸镍络合物的溶液中制造用于生产镍粉的合适晶种的细镍粉的方法。 依次制备镍粉的方法包括：向含有硫酸镍络合物的溶液中加入不溶于该溶液以形成混合浆料的不溶性固体的混合步骤; 还原沉淀步骤，将反应容器装入混合浆料中，然后将氢气吹入反应容器中的混合浆液中以还原混合浆料中的镍络合物离子，以在不溶性固体的表面上形成镍沉淀物; 以及从不溶性固体的表面分离不溶性固体的表面上的镍沉淀物以形成镍粉末的分离步骤。
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公开(公告)号：US10471514B2
公开(公告)日：2019-11-12
申请号：US15119263
申请日：2015-02-09
发明人： Kazumichi Yanagisawa , Junhao Zhang , Osamu Ikeda , Hideki Ohara , Tomoaki Yoneyama , Yohei Kudo , Shin-ichi Heguri
摘要： Provided is an efficient method for producing nickel powder from a solution containing a nickel ammine complex, the method including adding seed crystals to a solution containing a nickel ammine complex and subjecting the resulting mixture to hydrogen reduction under high temperatures and high pressures to produce nickel powder, which makes it possible to maintain the quality of the nickel powder produced and reduce the amount of the seed crystals used. The method for producing nickel powder is characterized by adding seed crystals and a dispersant having an anionic functional group to the solution containing a nickel ammine complex to form a mixture slurry, and subjecting the mixture slurry to pressurized hydrogen reduction treatment by blowing hydrogen into the mixture slurry in a high temperature and high pressure atmosphere to cause a reduction reaction, thereby reducing the nickel ammine complex in the mixture slurry to obtain nickel powder.
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公开(公告)号：US10220446B2
公开(公告)日：2019-03-05
申请号：US15117823
申请日：2015-02-17
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Yoshitomo Ozaki , Kazuyuki Takaishi , Hideki Ohara , Tomoaki Yoneyama , Osamu Ikeda , Yohei Kudo
摘要： Provided is a method for producing fine nickel powder used as suitable seed crystals for producing nickel powder from a solution containing a nickel ammine sulfate complex. The method for producing nickel powder sequentially comprises: a mixing step of adding, to a solution containing a nickel ammine sulfate complex, an insoluble solid which is insoluble in the solution to form a mixed slurry; a reduction and precipitation step of charging a reaction vessel with the mixed slurry and then blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions contained in the mixed slurry to form nickel precipitate on a surface of the insoluble solid; and a separation step of separating the nickel precipitate on the surface of the insoluble solid from the surface of the insoluble solid to form nickel powder.
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公开(公告)号：US20170095862A1
公开(公告)日：2017-04-06
申请号：US15127816
申请日：2015-03-24
发明人： Kazumichi Yanagisawa , Junhao Zhang , Kazuyuki Takaishi , Tomoaki Yoneyama , Shin-ichi Heguri , Hideki Ohara , Osamu Ikeda , Yohei Kudo , Yoshitomo Ozaki
CPC分类号： B22F9/24 , B01D9/0036 , B22F9/26 , B22F2009/245 , B22F2301/15 , B22F2998/10 , B22F2999/00 , H01M4/38 , H01M10/30 , B22F2201/013
摘要： Provided is nickel powder obtained by adding seed crystals to a nickel ammine complex solution and performing hydrogen reduction reaction under high temperatures and high pressures, wherein the nickel powder does not produce dust during handling, and a container can be efficiently filled with the nickel powder. The method for producing nickel powder includes: adding seed crystals and a surfactant having a nonionic or anionic functional group to a solution containing a nickel ammine complex to forma mixed slurry; and subjecting the mixed slurry to hydrogen reduction under high temperature and high pressure conditions in a pressure vessel to obtain nickel powder from the mixed slurry.
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公开(公告)号：US20170008083A1
公开(公告)日：2017-01-12
申请号：US15114218
申请日：2015-01-27
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Hideki Ohara , Osamu Ikeda , Tomoaki Yoneyama , Yohei Kudo , Yoshitomo Ozaki
CPC分类号： B22F3/10 , B22F1/0003 , B22F9/24 , B22F9/26 , B22F2009/245 , B22F2301/15 , B22F2998/10 , B22F2999/00 , C01C1/028 , C01C1/244 , C22B3/0005 , C22B23/0407 , C22B23/0461 , C22B23/0476 , Y02P10/234 , B22F2201/013 , B22F3/02
摘要： Provided is a method for producing nickel powder from a nickel ammine sulfate complex solution, comprising treatment steps of: (1) a seed crystal production step of producing nickel powder having an average particle size of 0.1 to 5 μm; (2) a seed crystal addition step of adding the nickel powder obtained in the step (1) as seed crystals to form a mixed slurry; (3) a reduction step of forming a reduced slurry containing nickel powder formed by precipitation of a nickel component in the mixed slurry on the seed crystals; and (4) a growth step of performing solid-liquid separation to separate and recover the nickel powder as a solid phase component and then blowing hydrogen gas into a solution prepared by adding the nickel ammine sulfate complex solution to the recovered nickel powder to grow the nickel powder to form high purity nickel powder.
摘要翻译： 本发明提供一种由硫酸镍配合物溶液制造镍粉的方法，其特征在于，包括以下处理步骤：（1）制备平均粒径为0.1〜5μm的镍粉的晶种生产工序; （2）晶种添加步骤，将步骤（1）中获得的镍粉末作为晶种添加以形成混合浆料; （3）还原步骤，形成含有通过在混合浆料中沉淀镍成分而形成的镍粉末的还原浆料; 和（4）进行固液分离的生长步骤，以分离和回收作为固相成分的镍粉，然后将氢气吹入通过向回收的镍粉中加入硫酸镍络合物溶液而制备的溶液中以生长 镍粉形成高纯镍粉。
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公开(公告)号：US20160354844A1
公开(公告)日：2016-12-08
申请号：US15117855
申请日：2015-02-17
发明人： Kazumichi Yanagisawa , Junhao Zhang , Shin-ichi Heguri , Yoshitomo Ozaki , Kazuyuki Takaishi , Hideki Ohara , Tomoaki Yoneyama , Osamu Ikeda , Yohei Kudo
IPC分类号： B22F9/24
CPC分类号： B22F9/24 , B22F9/26 , B22F2009/245 , B22F2301/15 , B22F2998/10 , B22F2999/00 , B22F2201/013
摘要： Provided is a method for producing fine nickel powder used as suitable seed crystals for producing nickel powder from a solution containing a nickel ammine sulfate complex. The method for producing nickel powder sequentially includes: a mixing step of adding, to a solution containing a nickel ammine sulfate complex, a dispersant containing a sulfonate and an insoluble solid which is insoluble in the solution to form a mixed slurry; a reduction and precipitation step of charging a reaction vessel with the mixed slurry and then blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions contained in the mixed slurry to form nickel precipitate on a surface of the insoluble solid; and a separation step of separating the nickel precipitate on the surface of the insoluble solid from the surface of the insoluble solid to form nickel powder.
摘要翻译： 本发明提供一种从含有硫酸镍络合物的溶液中制造用于生产镍粉的合适晶种的细镍粉的方法。 依次制备镍粉的方法包括：向含有硫酸镍络合物的溶液中加入不溶于所述溶液以形成混合浆料的含有磺酸盐和不溶性固体的分散剂的混合步骤; 还原沉淀步骤，将反应容器装入混合浆料中，然后将氢气吹入反应容器中的混合浆液中以还原混合浆料中的镍络合物离子，以在不溶性固体的表面上形成镍沉淀物; 以及从不溶性固体的表面分离不溶性固体的表面上的镍沉淀物以形成镍粉末的分离步骤。
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