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公开(公告)号：US10227675B2
公开(公告)日：2019-03-12
申请号：US15552307
申请日：2015-12-08
摘要： A wet smelting method for nickel oxide ores from which nickel, cobalt, etc. are recovered is provided with which it is possible to reduce the consumption of an acid in leaching, such as sulfuric acid, and to recover valuable metals. The method comprises: step (A) in which nickel oxide ores as a raw material are separated into a limonite-type ore having a low magnesium content and a saprolite-type ore having a high magnesium content; step (B) in which the saprolite-type ore is subjected to normal-pressure leaching under given standardized leaching conditions using the pressure leachate obtained by pressure leaching in step (C); and step (C) in which the limonite-type ore obtained in step (A) is mixed with the normal-pressure leaching residue obtained in step (B) and the mixture is reacted with sulfuric acid in an acidic atmosphere having a high temperature and a high pressure, thereby conducting pressure leaching.
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公开(公告)号：US20180037972A1
公开(公告)日：2018-02-08
申请号：US15552307
申请日：2015-12-08
CPC分类号： C22B1/00 , C22B3/08 , C22B23/005 , C22B23/043 , Y02P10/212
摘要： A wet smelting method for nickel oxide ores from which nickel, cobalt, etc. are recovered is provided with which it is possible to reduce the consumption of an acid in leaching, such as sulfuric acid, and to recover valuable metals. The method comprises: step (A) in which nickel oxide ores as a raw material are separated into a limonite-type ore having a low magnesium content and a saprolite-type ore having a high magnesium content; step (B) in which the saprolite-type ore is subjected to normal-pressure leaching under given standardized leaching conditions using the pressure leachate obtained by pressure leaching in step (C); and step (C) in which the limonite-type ore obtained in step (A) is mixed with the normal-pressure leaching residue obtained in step (B) and the mixture is reacted with sulfuric acid in an acidic atmosphere having a high temperature and a high pressure, thereby conducting pressure leaching.
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公开(公告)号：US09776885B2
公开(公告)日：2017-10-03
申请号：US14386445
申请日：2013-02-13
CPC分类号： C01G49/06 , B09B3/00 , B09B3/0083 , C22B23/0415 , Y02P10/212
摘要： Provided is a production method for refining iron oxide (hematite), which has such a low sulfur content as to be used as an iron-making raw material, from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. In the method for refining iron oxide for ironmaking by a process of adding sulfuric acid to nickel oxide ore and then leaching nickel from the nickel oxide ore using a pressure vessel, an amount of the sulfuric acid added is 150 kg or more and 220 kg or less per ton of nickel oxide ore.
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公开(公告)号：US10081851B2
公开(公告)日：2018-09-25
申请号：US15526862
申请日：2015-11-25
发明人： Itsumi Matsuoka , Hidemasa Nagai , Keiji Kudo , Shin-ya Matsumoto , Tatsuya Higaki , Yoshitomo Ozaki , Hirofumi Shouji , Hiroshi Kobayashi
CPC分类号： C22B59/00 , C01F17/00 , C01F17/0043 , C01P2006/80 , C07C51/412 , C22B1/02 , C22B3/001 , C22B3/08 , C22B3/42 , C22B3/44 , Y02P10/234 , C07C55/07
摘要： Provided is a method for recovering scandium, with which it is possible to easily and efficiently recover high-purity scandium from nickel oxide ores. This method for recovering scandium involves passing a solution containing scandium through an ion exchange resin, then subjecting the eluant eluted from the ion exchange resin to solvent extraction and separating the extraction residual liquid and the extraction agent after extraction, then performing an oxalation process on the extraction residual liquid to obtain a scandium oxalate precipitate, and roasting the precipitate to obtain scandium oxide, wherein the method is characterized in that an amine-based extraction agent is used as the extraction agent for solvent extraction.
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公开(公告)号：US20170321301A1
公开(公告)日：2017-11-09
申请号：US15526862
申请日：2015-11-25
发明人： Itsumi Matsuoka , Hidemasa Nagai , Keiji Kudo , Shin-ya Matsumoto , Tatsuya Higaki , Yoshitomo Ozaki , Hirofumi Shouji , Hiroshi Kobayashi
CPC分类号： C22B59/00 , C01F17/00 , C01F17/0043 , C01P2006/80 , C07C51/412 , C22B1/02 , C22B3/001 , C22B3/08 , C22B3/42 , C22B3/44 , Y02P10/234 , C07C55/07
摘要： Provided is a method for recovering scandium, with which it is possible to easily and efficiently recover high-purity scandium from nickel oxide ores. This method for recovering scandium involves passing a solution containing scandium through an ion exchange resin, then subjecting the eluant eluted from the ion exchange resin to solvent extraction and separating the extraction residual liquid and the extraction agent after extraction, then performing an oxalation process on the extraction residual liquid to obtain a scandium oxalate precipitate, and roasting the precipitate to obtain scandium oxide, wherein the method is characterized in that an amine-based extraction agent is used as the extraction agent for solvent extraction.
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公开(公告)号：US20230071697A1
公开(公告)日：2023-03-09
申请号：US17797212
申请日：2021-02-10
发明人： Hiroshi Takenouchi , Satoshi Asano , Shin-ichi Heguri , Hirofumi Shouji , Keiji Kudou , Itsumi Matsuoka , Shota Sanjo , Takumi Matsugi
摘要： Provided is a method for treating an alloy by which nickel and/or cobalt can be selectively isolated from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium ion battery. The present invention is a method for treating an alloy, by which a solution that contains nickel and/or cobalt is obtained from an alloy that contains copper as well as nickel and/or cobalt, the method including: a leaching step in which a leachate is obtained by subjecting an alloy to an acid-based leaching treatment under conditions in which a sulfurizing agent is also present; a reduction step in which a reduced solution is obtained by subjecting the leachate to a reduction treatment using a reducing agent; and an oxidation/neutralization step in which a solution that contains nickel and/or cobalt is obtained by adding an oxidizing agent and also a neutralizing agent to the reduced solution.
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公开(公告)号：US20150050201A1
公开(公告)日：2015-02-19
申请号：US14386445
申请日：2013-02-13
IPC分类号： C01G49/06
CPC分类号： C01G49/06 , B09B3/00 , B09B3/0083 , C22B23/0415 , Y02P10/212
摘要： Provided is a production method for refining iron oxide (hematite), which has such a low sulfur content as to be used as an iron-making raw material, from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. In the method for refining iron oxide for ironmaking by a process of adding sulfuric acid to nickel oxide ore and then leaching nickel from the nickel oxide ore using a pressure vessel, an amount of the sulfuric acid added is 150 kg or more and 220 kg or less per ton of nickel oxide ore.
摘要翻译： 本发明提供一种由含有氧化铁的高压酸浸（HPAL）工艺的浸出残渣，精炼氧化铁（赤铁矿）的制造方法，该氧化铁（赤铁矿）具有如下用作制铁原料的低硫含量 。 在通过将硫酸添加到氧化镍矿石中然后使用压力容器从镍氧化物矿石中浸出镍的方法来精炼用于炼铁的氧化铁的方法中，加入的硫酸的量为150kg以上至220kg， 每吨氧化镍矿石少。
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公开(公告)号：US20150023851A1
公开(公告)日：2015-01-22
申请号：US14386172
申请日：2013-01-16
发明人： Hideki Sasaki , Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki , Hiroyuki Mitsui , Yasumasa Kan
IPC分类号： C01G49/06
CPC分类号： C01G49/06 , C01P2004/61 , C22B3/44 , Y02P10/234
摘要： Provided is a method for producing hematite for ironmaking, wherein high purity hematite, which can be used as an iron-making raw material, is cheaply and efficiently recovered from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. This method for producing (high purity) hematite for ironmaking in a process of adding a mineral acid and an oxidant to ore containing iron and valuable metals and then leaching the valuable metals under high pressure and high temperature includes (1) a neutralization step of adding a neutralizer to a leachate obtained under high pressure and high temperature to form a leach slurry, (2) a solid-liquid separation step of separating the leach slurry obtained in the neutralization step (1) into a leach residue and the leachate, and (3) a classification step of classifying the leach residue into the hematite and gangue components. (145 words)
摘要翻译： 提供一种用于制造用于炼铁的赤铁矿的方法，其中可以用作制铁原料的高纯度赤铁矿从通过高压酸浸（HPAL）方法生产的含有氧化铁的浸出残渣中被廉价和有效地回收 。 在将含有铁和贵重金属的矿石中添加无机酸和氧化剂，然后在高压和高温下浸出有价值金属的方法中，用于制造（高纯度）赤铁矿的方法包括：（1）中和步骤， 在高压和高温下获得的浸出液的中和剂以形成浸出浆料;（2）将在中和步骤（1）中获得的浸出浆料分离成浸出残渣和渗滤液的固液分离步骤，和 3）将浸出残渣分类为赤铁矿和ang石成分的分级步骤。 （145字）
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公开(公告)号：US09255013B2
公开(公告)日：2016-02-09
申请号：US14386172
申请日：2013-01-16
发明人： Hideki Sasaki , Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki , Hiroyuki Mitsui , Yasumasa Kan
CPC分类号： C01G49/06 , C01P2004/61 , C22B3/44 , Y02P10/234
摘要： Provided is a method for producing hematite for ironmaking, wherein high purity hematite, which can be used as an iron-making raw material, is cheaply and efficiently recovered from a leach residue containing iron oxide produced by a high pressure acid leach (HPAL) process. This method for producing (high purity) hematite for ironmaking in a process of adding a mineral acid and an oxidant to ore containing iron and valuable metals and then leaching the valuable metals under high pressure and high temperature includes (1) a neutralization step of adding a neutralizer to a leachate obtained under high pressure and high temperature to form a leach slurry, (2) a solid-liquid separation step of separating the leach slurry obtained in the neutralization step (1) into a leach residue and the leachate, and (3) a classification step of classifying the leach residue into the hematite and gangue components.
摘要翻译： 提供一种用于制造用于炼铁的赤铁矿的方法，其中可以用作制铁原料的高纯度赤铁矿从通过高压酸浸（HPAL）方法生产的含有氧化铁的浸出残渣中被廉价和有效地回收 。 在将含有铁和贵重金属的矿石中添加无机酸和氧化剂，然后在高压和高温下浸出有价值金属的方法中，用于制造（高纯度）赤铁矿的方法包括：（1）中和步骤， 在高压和高温下获得的浸出液的中和剂以形成浸出浆料;（2）将在中和步骤（1）中获得的浸出浆料分离成浸出残渣和渗滤液的固液分离步骤，和 3）将浸出残渣分类为赤铁矿和ang石成分的分级步骤。
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