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公开(公告)号：EP3009407B1
公开(公告)日：2018-12-12
申请号：EP14810962.2
申请日：2014-05-15
发明人： OHARA, Hideki , OZAKI, Yoshitomo
IPC分类号： C02F1/58 , C01F5/02 , C02F1/04 , C02F1/64 , C02F1/72 , C22B3/04 , C22B3/44 , C22B23/00 , C22B21/00 , C22B26/20 , C22B26/22 , C22B47/00 , C01G45/02 , C01G53/00 , C02F1/52 , C01F5/12 , C02F1/66 , C01B17/48 , C01F11/46 , C01F5/40
CPC分类号： C02F1/5236 , C01B17/48 , C01F5/12 , C01F5/40 , C01F11/46 , C01G45/02 , C01G53/006 , C01P2002/72 , C01P2004/01 , C01P2006/80 , C01P2006/90 , C02F1/04 , C02F1/66 , C02F1/72 , C02F9/00 , C02F2101/10 , C02F2101/20 , C02F2101/206 , C02F2103/10 , Y02W10/37
摘要： Provided is a wastewater treatment process capable of selectively and efficiently separating and removing a manganese precipitate with high purity from sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese. In the wastewater treatment for a sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese, a magnesium oxide is used for part or all of the neutralizing agent to be added, the magnesium oxide is produced through the following steps (1) to (4): (1) effluent wastewater obtained by separating aluminum and manganese from sulfuric acid-acidic wastewater is concentrated, and calcium contained in the effluent wastewater is precipitated as a calcium sulfate; (2) the solution obtained in (1) is further concentrated, and magnesium is precipitated and separated as a magnesium sulfate; (3) the magnesium sulfate separated in (2) is roasted together with a reducing agent to obtain a magnesium oxide and sulfurous acid gas; and (4) the magnesium oxide obtained in (3) is washed.
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公开(公告)号：EP3248720A1
公开(公告)日：2017-11-29
申请号：EP15878829.9
申请日：2015-03-26
发明人： HEGURI, Shin-ichi , OZAKI, Yoshitomo , TAKAISHI, Kazuyuki , YONEYAMA, Tomoaki , OHARA, Hideki , IKEDA, Osamu , KUDO, Yohei
CPC分类号： B22F9/26 , B22F2301/15
摘要： Provided is a method for producing nickel powder, in which fine nickel powder used as seed crystals required for producing nickel powder is produced from a solution containing a nickel ammine sulfate complex depending on the amount required for producing the nickel powder. The method for producing nickel powder sequentially includes: a mixing step of adding, to a nickel ammine sulfate complex solution, an insoluble solid as seed crystals and a polyacrylate or lignosulfonate as a dispersant to form a mixed slurry; and a reduction and precipitation step of charging a reaction vessel with the mixed slurry and blowing hydrogen gas into the mixed slurry in the reaction vessel to reduce nickel complex ions in the mixed slurry to form nickel precipitate on the surface of the insoluble solid, wherein the amount of the dispersant added in the mixing step is controlled to control the number of the nickel powder obtained by formation of the nickel precipitate in the reduction and precipitation step.
摘要翻译： 本发明提供一种镍粉的制造方法，其中，根据制造镍粉所需的量，由含有硫酸镍铵络合物的溶液制造作为制造镍粉所需的晶种的微细的镍粉。 镍粉的制造方法依次包括：混合工序，向硫酸镍铵络合物溶液中添加作为晶种的不溶性固体和作为分散剂的聚丙烯酸酯或木质素磺酸盐，形成混合浆料; 以及将混合浆料装入反应容器中并将氢气吹入反应容器中的混合浆料以还原混合浆料中的镍配合物离子以在不溶性固体表面上形成镍沉淀物的还原和沉淀步骤，其中 控制在混合步骤中添加的分散剂的量以控制在还原和沉淀步骤中通过形成镍沉淀物获得的镍粉的数量。
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公开(公告)号：EP4163257A1
公开(公告)日：2023-04-12
申请号：EP22782443.0
申请日：2022-01-20
发明人： OHARA, Hideki , KUDOU, Keiji , HIGAKI, Tatsuya , WATANABE, Hiroto , KONDOU, Natsuki , KANEKO, Takashi , HEGURI, Shin-ichi
摘要： Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method for cobalt sulfate includes: a copper removal step (S1) of adding a sulfurizing agent to a cobalt chloride solution containing one or more impurities of copper, zinc, manganese, calcium, and magnesium and generating a precipitate of sulfide of copper to separate to remove copper; a neutralization step (S2) of adding a neutralizer or a carbonation agent to a cobalt chloride solution having undergone through the copper removal step (S1) and generating cobalt hydroxide or basic cobalt carbonate to separate magnesium; a leaching step (S3) of adding sulfuric acid to the cobalt hydroxide or the basic cobalt carbonate to obtain cobalt sulfate solution; and a solvent extraction step (S4) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant to the cobalt sulfate solution and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium. These steps are sequentially executed.
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公开(公告)号：EP2796411B1
公开(公告)日：2018-06-27
申请号：EP12860169.7
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.
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公开(公告)号：EP3009407A1
公开(公告)日：2016-04-20
申请号：EP14810962.2
申请日：2014-05-15
发明人： OHARA, Hideki , OZAKI, Yoshitomo
IPC分类号： C02F1/58 , C01F5/02 , C02F1/04 , C02F1/64 , C02F1/72 , C22B3/04 , C22B3/44 , C22B23/00 , C22B21/00 , C22B26/20 , C22B26/22 , C22B47/00
CPC分类号： C02F1/5236 , C01B17/48 , C01F5/12 , C01F5/40 , C01F11/46 , C01G45/02 , C01G53/006 , C01P2002/72 , C01P2004/01 , C01P2006/80 , C01P2006/90 , C02F1/04 , C02F1/66 , C02F1/72 , C02F9/00 , C02F2101/10 , C02F2101/20 , C02F2101/206 , C02F2103/10 , Y02W10/37
摘要： Provided is a wastewater treatment process capable of selectively and efficiently separating and removing a manganese precipitate with high purity from sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese. In the wastewater treatment for a sulfuric acid-acidic wastewater containing aluminum, magnesium, and manganese, a magnesium oxide is used for part or all of the neutralizing agent to be added, the magnesium oxide is produced through the following steps (1) to (4): (1) effluent wastewater obtained by separating aluminum and manganese from sulfuric acid-acidic wastewater is concentrated, and calcium contained in the effluent wastewater is precipitated as a calcium sulfate; (2) the solution obtained in (1) is further concentrated, and magnesium is precipitated and separated as a magnesium sulfate; (3) the magnesium sulfate separated in (2) is roasted together with a reducing agent to obtain a magnesium oxide and sulfurous acid gas; and (4) the magnesium oxide obtained in (3) is washed.
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公开(公告)号：EP2796411A8
公开(公告)日：2014-12-24
申请号：EP12860169.7
申请日：2012-12-14
IPC分类号： C01F5/12
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.
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公开(公告)号：EP4116262A1
公开(公告)日：2023-01-11
申请号：EP22777940.2
申请日：2022-01-06
发明人： WATANABE, Hiroto , OHARA, Hideki , KUDOU, Keiji , KANEKO, Takashi , HIGAKI, Tatsuya , KONDOU, Natsuki , HEGURI, Shin-ichi
摘要： Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method includes: a first solvent extraction step (S1) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant into contact with a cobalt chloride solution containing impurities, and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium; a copper removal step (S2) of adding a sulfurizing agent to a cobalt chloride solution and generating a precipitate of sulfide of copper to separate to remove copper; a second solvent extraction step (S3) of bringing an organic solvent containing a carboxylic acid-based extractant into contact with a cobalt chloride solution and back extracting cobalt with sulfuric acid after extracting cobalt into the organic solvent to obtain cobalt sulfate solution; and a crystallization step (S4) of the cobalt sulfate solution obtained after having undergone through the second solvent extraction step (S3). These steps are sequentially executed. Without using an electrolysis process, a high purity cobalt sulfate is directly produced by separating cobalt and impurities containing manganese.
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8.发明公开
公开(公告)号：EP3012226A1
公开(公告)日：2016-04-27
申请号：EP14814192.2
申请日：2014-05-15
发明人： OZAKI, Yoshitomo , OHARA, Hideki
CPC分类号： C01G49/06 , C01B17/501 , C01B17/96 , C01F5/12 , C01F5/40 , C01F11/00 , C01F11/46 , C01F11/468 , C01P2002/72 , C01P2004/02 , C02F1/5236 , C02F1/66 , C02F2101/206 , C22B23/043 , C22B23/0461
摘要： Provided is a process for producing hematite, which is capable of producing low-sulfur-grade hematite in a HPAL process of a nickel oxide ore. Magnesium oxide produced by passing through the steps (1) to (5) is used as a neutralizing agent for preliminary neutralization treatment of a leached slurry obtained by leaching a nickel oxide ore at a high temperature and high pressure with sulfuric acid added thereto. (1) A neutralizing agent is added to a leachate, which is obtained by leaching a nickel oxide ore, to separate impurities, and a sulfurizing agent is added to the resulting neutralized solution to obtain sulfides of nickel and cobalt, followed by separating the sulfurized solution; (2) discharge waste water, which is obtained by adding a neutralizing agent to the sulfurized solution to separate aluminum and manganese, is concentrated to precipitate and separate calcium contained in the discharge waste water as calcium sulfate; (3) the resulting solution is further concentrated to precipitate magnesium in the solution as magnesium sulfate; (4) the magnesium sulfate is roasted together with a reducing agent to obtain magnesium oxide and a sulfurous gas; and (5) the magnesium oxide is washed.
摘要翻译： 本发明提供一种赤铁矿的制造方法，该方法能够在氧化镍矿石的HPAL工序中制造低硫级赤铁矿。 通过经过步骤（1） - （5）制备的氧化镁用作中和剂，用于通过向其中加入硫酸在高温高压下浸出氧化镍矿石而获得的浸出浆液的初步中和处理。 （1）在通过浸出氧化镍矿石获得的沥出液中加入中和剂以分离杂质，并将硫化剂加入到所得中和溶液中以获得镍和钴的硫化物，然后分离硫化 解; （2）向硫化液中加入中和剂分离出铝和锰的废水经浓缩后沉淀出来，并以硫酸钙的形式分离排放废水中的钙; （3）将所得溶液进一步浓缩，以硫酸镁的形式在溶液中沉淀镁; （4）将硫酸镁与还原剂一起焙烧以获得氧化镁和含硫气体; 和（5）氧化镁被洗涤。
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公开(公告)号：EP2796411A1
公开(公告)日：2014-10-29
申请号：EP12860169.7
申请日：2012-12-14
发明人： OHARA, Hideki
IPC分类号： C01F5/12
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： 本发明的目的在于提供一种氧化镁的制造方法，能够从含有废水等镁和钙的硫酸溶液简便且高效地制造纯度高，杂质含量低的氧化镁。 在本发明中，钙以硫酸钙的形式沉淀，并通过浓缩含有镁和钙的硫酸溶液而分离，并且镁以硫酸镁的形式沉淀，并通过进一步浓缩由钙分离产生的溶液而分离。 将分离的硫酸镁与还原剂一起焙烧，从而获得氧化镁和二氧化硫。 洗涤得到的氧化镁以生产高纯度的氧化镁。
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