-
公开(公告)号：US09776885B2
公开(公告)日：2017-10-03
申请号：US14386445
申请日：2013-02-13
Applicant: Sumitomo Metal Mining Co., Ltd.
Inventor： Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki
CPC classification number: C01G49/06 , B09B3/00 , B09B3/0083 , C22B23/0415 , Y02P10/212
Abstract: 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.
-
Patent Agency Ranking
公开(公告)号：US10125408B2
公开(公告)日：2018-11-13
申请号：US15561695
申请日：2015-12-08
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Tomoaki Yoneyama , Hiroyuki Mitsui , Manabu Enomoto
Abstract: Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid acidic solution containing nickel and cobalt and a high iron ions concentration as the sulfidation start solution. This method generates a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid acidic solution, which is the sulfidation start solution, contains iron ions at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.
-
3.发明申请公开(公告)号：US20180105896A1
公开(公告)日：2018-04-19
申请号：US15561695
申请日：2015-12-08
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Tomoaki Yoneyama , Hiroyuki Mitsui , Manabu Enomoto
CPC classification number: C22B23/043 , B01D53/1468 , C01B17/165 , C01D13/00 , C01G53/006 , C22B3/08 , C22B3/44 , C22B23/00 , Y02P10/234
Abstract: Provided is a method for manufacturing a nickel and cobalt mixed sulfide that is capable of stabilizing nickel and cobalt concentrations in the sulfidation end solution at low levels and of limiting decreases in nickel and cobalt recovery rates without increasing cost even when processing with a sulfuric acid acidic solution containing nickel and cobalt and a high iron ions concentration as the sulfidation start solution. This method generates a sulfidation reaction by blowing hydrogen sulfide gas into a sulfuric acid acidic solution comprising nickel and cobalt to obtain a mixed sulfide, wherein: the sulfuric acid acidic solution, which is the sulfidation start solution, contains iron ions at a rate of 1.0-4.0 g/L; and the sulfidation reaction is generated by blowing hydrogen sulfide gas into the sulfidation start solution and adding sodium hydrogensulfide (NaHS) obtained by absorbing hydrogen sulfide gas-containing exhaust gas, generated by the sulfidation, in an alkaline solution.
-
公开(公告)号：US20150050201A1
公开(公告)日：2015-02-19
申请号：US14386445
申请日：2013-02-13
Applicant: Sumitomo Metal Mining Co., Ltd.
Inventor： Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki
IPC: C01G49/06
CPC classification number: C01G49/06 , B09B3/00 , B09B3/0083 , C22B23/0415 , Y02P10/212
Abstract: 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.
Abstract translation: 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。
-
公开(公告)号：US20150023851A1
公开(公告)日：2015-01-22
申请号：US14386172
申请日：2013-01-16
Applicant: Sumitomo Metal Mining Co., Ltd.
Inventor： Hideki Sasaki , Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki , Hiroyuki Mitsui , Yasumasa Kan
IPC: C01G49/06
CPC classification number: C01G49/06 , C01P2004/61 , C22B3/44 , Y02P10/234
Abstract: 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)
Abstract translation: 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）
-
公开(公告)号：US09255013B2
公开(公告)日：2016-02-09
申请号：US14386172
申请日：2013-01-16
Applicant: Sumitomo Metal Mining Co., Ltd.
Inventor： Hideki Sasaki , Yoshitomo Ozaki , Manabu Enomoto , Hirofumi Shouji , Tatsuya Higaki , Hiroyuki Mitsui , Yasumasa Kan
CPC classification number: C01G49/06 , C01P2004/61 , C22B3/44 , Y02P10/234
Abstract: 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.
Abstract translation: 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。
-
-
-
-
-
Search Results
6
records
(took 0.013 seconds)
