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公开(公告)号：US20170152386A1
公开(公告)日：2017-06-01
申请号：US15320333
申请日：2015-03-26
发明人： Hiroshi Okada , Yu Yamashita
CPC分类号： C09C1/62 , B22F1/0014 , B22F1/0055 , B22F2001/0033 , B22F2001/0037 , B22F2301/10 , B22F2304/10 , C09D5/24 , C09D201/00 , C25C1/12 , C25C5/02 , C25C7/02 , C25C7/08 , H01B1/22 , H01B5/00 , H05K9/0081
摘要： Provided is a copper powder in which the number of contact points between copper powder particles is increased to allow excellent electric conductivity to be achieved, and which can be used suitably in use applications including an electrically conductive paste and an electromagnetic wave shield. The copper powder according to the present invention has a dendritic shape composed of a main stem that is grown linearly and multiple branches that are branched from the main stem, wherein the main stem and the branches are composed of a flat-plate-like cupper particle having a cross section with an average thickness of 0.2 to 1.0 μm, and the average particle diameter (D50) of the copper powder is 5.0 to 30 μm. A copper paste having excellent electric conductivity can be produced by mixing the dendritic copper powder with a resin.
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公开(公告)号：US20210328283A1
公开(公告)日：2021-10-21
申请号：US17258772
申请日：2019-07-11
发明人： Yu Yamashita , Ryo Togashi
IPC分类号： H01M10/54 , H01M10/0525 , C22B9/10
摘要： Provided is a more efficient dry refining process for improving the recovery rate of phosphorus-free valuable metals from waste lithium ion batteries. The present invention provides a method for recovering valuable metals from waste lithium ion batteries, said method comprises a melting step S4 for melting the waste lithium ion batteries and obtaining a molten substance and a slag separation step S5 for separating slag from the molten substance and recovering an alloy containing valuable metals, wherein in the melting step, flux containing a calcium compound is added to the waste lithium ion batteries such that the mass ratio between silicon dioxide and calcium oxide in the slag becomes 0.50 or less and the mass ratio between calcium oxide and aluminum oxide falls in the range of 0.30 to 2.00.
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公开(公告)号：US20210126300A1
公开(公告)日：2021-04-29
申请号：US17258763
申请日：2019-07-11
发明人： Ryo Togashi , Yu Yamashita
摘要： Provided are: an alloy powder that can be obtained from a waste lithium ion battery, wherein the alloy powder can be dissolved in an acid solution and enables recovery of metals contained in the alloy powder; and a method for producing the alloy powder. This alloy powder contains Cu and at least one of Ni and Co as constituent components, wherein a portion having a higher concentration of the at least one of Ni and Co than the average concentration in the entire alloy powder is distributed on at least the surface, and the phosphorus grade is less than 0.1% by mass. The method for producing the alloy powder includes a powdering step for powdering a molten alloy using a gas atomization method, the molten alloy containing Cu and at least one of Ni and Co as constituent components and having a phosphorus grade of less than 0.1% by mass.
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公开(公告)号：US20140348732A1
公开(公告)日：2014-11-27
申请号：US14365842
申请日：2012-12-14
IPC分类号： C22B3/00
CPC分类号： C22B23/043 , C01B17/501 , C01F5/12 , C01F5/40 , C01F11/46 , C01P2002/72 , C01P2004/03
摘要： It is an object to provide a method for producing magnesium oxide by which magnesium oxide being high in purity and low in impurity content can be produced simply and efficiently from a sulfuric acid solution containing magnesium and calcium such as waste water. In the present invention, calcium is precipitated as calcium sulfate and separated by concentrating a sulfuric acid solution containing magnesium and calcium, and magnesium is precipitated as magnesium sulfate and separated by further concentrating the solution resulting from the separation of calcium. The separated magnesium sulfate is roasted together with a reductant, so that magnesium oxide and sulfur dioxide are obtained. The resulting magnesium oxide is washed to produce magnesium oxide with high purity.
摘要翻译： 本发明的目的是提供一种生产氧化镁的方法，通过该方法可以从含有镁和钙的硫酸溶液如废水中简单有效地制备纯度高，杂质含量低的氧化镁。 在本发明中，作为硫酸钙析出钙，通过浓缩含有镁和钙的硫酸溶液进行分离，镁以硫酸镁的形式析出，并通过进一步浓缩由钙分离得到的溶液进行分离。 将分离的硫酸镁与还原剂一起焙烧，得到氧化镁和二氧化硫。 将所得的氧化镁洗涤以产生高纯度的氧化镁。
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公开(公告)号：US10695830B2
公开(公告)日：2020-06-30
申请号：US15572941
申请日：2015-10-27
发明人： Hiroshi Okada , Yu Yamashita
摘要： Provided is a copper powder which can be suitably utilized in applications such as an electrically conductive paste and an electromagnetic wave shield. A copper powder according to the present invention has a dendritic shape having a linearly grown main stem and a plurality of branches separated from the main stem, the main stem and the branches are constituted as flat plate-shaped copper particles having a cross-sectional average thickness of from 0.02 μm to 5.0 μm to be determined by scanning electron microscopic SEM observation gather, the average particle diameter D50 of the copper powder is from 1.0 μm to 100 μm, and the maximum height in the vertical direction with respect to the flat plate-shaped surface of the copper particles is 1/10 or less with respect to the maximum length in the horizontal direction of the flat plate-shaped surface of the copper particles.
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6.发明申请公开(公告)号：US20180111190A1
公开(公告)日：2018-04-26
申请号：US15572941
申请日：2015-10-27
发明人： Hiroshi Okada , Yu Yamashita
摘要： Provided is a copper powder which can be suitably utilized in applications such as an electrically conductive paste and an electromagnetic wave shield. A copper powder according to the present invention has a dendritic shape having a linearly grown main stem and a plurality of branches separated from the main stem, the main stem and the branches are constituted as flat plate-shaped copper particles having a cross-sectional average thickness of from 0.02 μm to 5.0 μm to be determined by scanning electron microscopic SEM observation gather, the average particle diameter D50 of the copper powder is from 1.0 μm to 100 μm, and the maximum height in the vertical direction with respect to the flat plate-shaped surface of the copper particles is 1/10 or less with respect to the maximum length in the horizontal direction of the flat plate-shaped surface of the copper particles.
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7.发明申请公开(公告)号：US20180051176A1
公开(公告)日：2018-02-22
申请号：US15560750
申请日：2015-03-26
发明人： Hiroshi Okada , Yu Yamashita
CPC分类号： C09C1/627 , B22F1/00 , B22F1/0014 , B22F1/0059 , B22F1/0081 , B22F2301/10 , B22F2303/20 , B22F2304/10 , C09C1/62 , C09D5/24 , C09D201/00 , C25C5/02 , H01B1/00 , H01B1/22 , H01B5/00 , H05K9/0081
摘要： Provided is a copper powder that has an increased number of points of contact between copper powder particles, that ensures excellent conductivity, and that can be suitably used in a conductive paste, an electromagnetic wave shield, or the like. The copper powder is configured from flat plate-shaped copper particles that form a dendritic shape having a linearly grown main trunk and a plurality of branches branching from the main trunk. The main trunk and the branches have an average cross-sectional thickness of more than 1.0 μm but no more than 5.0 μm. The copper powder has a flat plate shape that is configured from a layered structure of one layer or a plurality of stacked layers. The average particle size (D50) is 1.0-100 μm.
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公开(公告)号：US20170145225A1
公开(公告)日：2017-05-25
申请号：US15323162
申请日：2015-03-26
发明人： Hiroshi Okada , Yu Yamashita
CPC分类号： C09D5/32 , B22F1/00 , B22F1/0014 , B22F2301/10 , B22F2304/10 , C08K7/00 , C08K2201/001 , C08K2201/005 , C09C1/02 , C09D5/24 , C09D7/68 , C09D7/70 , C09D161/06 , C09D201/00 , C25C5/02 , H01B1/026 , H01B1/22 , H01B5/00 , H05K9/0081
摘要： To provide a copper powder exhibiting a high electric conductivity suitable for a metallic filler used in an electrically conductive paste, a resin for electromagnetic shielding, an antistatic coating, etc., and having excellent uniform dispersibility required for forming a paste so as to inhibit an increase in viscosity due to flocculation. This copper powder 1 forms a branch shape having a plurality of branches through the conglomeration of copper particles 2. The copper particles 2 have a spheroidal shape, with diameters ranging from 0.2 μm-0.5 μm, inclusive, and lengths ranging from 0.5 μm-2.0 μm, inclusive. The average particle diameter (D50) of the copper powder 1 in which the spheroidal copper particles 2 have conglomerated is 5.0 μm-20 μm. By mixing this tree-branch-shaped copper powder 1 into a resin, it is possible to produce an electrically conductive paste, etc., exhibiting excellent electric conductivity, for example.
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公开(公告)号：US09328399B2
公开(公告)日：2016-05-03
申请号：US14365842
申请日：2012-12-14
CPC分类号： C22B23/043 , C01B17/501 , C01F5/12 , C01F5/40 , C01F11/46 , C01P2002/72 , C01P2004/03
摘要： It is an object to provide a method for producing magnesium oxide by which magnesium oxide being high in purity and low in impurity content can be produced simply and efficiently from a sulfuric acid solution containing magnesium and calcium such as waste water. In the present invention, calcium is precipitated as calcium sulfate and separated by concentrating a sulfuric acid solution containing magnesium and calcium, and magnesium is precipitated as magnesium sulfate and separated by further concentrating the solution resulting from the separation of calcium. The separated magnesium sulfate is roasted together with a reductant, so that magnesium oxide and sulfur dioxide are obtained. The resulting magnesium oxide is washed to produce magnesium oxide with high purity.
摘要翻译： 本发明的目的是提供一种生产氧化镁的方法，通过该方法可以从含有镁和钙的硫酸溶液如废水中简单有效地制备纯度高，杂质含量低的氧化镁。 在本发明中，作为硫酸钙析出钙，通过浓缩含有镁和钙的硫酸溶液进行分离，镁以硫酸镁的形式析出，并通过进一步浓缩由钙分离得到的溶液进行分离。 将分离的硫酸镁与还原剂一起焙烧，得到氧化镁和二氧化硫。 将所得的氧化镁洗涤以产生高纯度的氧化镁。
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