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1.发明申请公开(公告)号：US20130074653A1
公开(公告)日：2013-03-28
申请号：US13701951
申请日：2011-07-13
申请人： Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
发明人： Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
IPC分类号： C22B1/02
CPC分类号： C22B1/02 , C22B3/0005 , C22B3/12 , C22B3/44 , C22B23/005 , C22B23/021 , C22B23/023 , C22B23/0461 , Y02P10/234
摘要： Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step.
摘要翻译： 本发明提供从镍硫化物或含有镍和钴的混合硫化物制备镍铁的方法，其通过氧化镍矿石的湿法冶金得到，或从废渣或产品中获得。 镍铁原料的制造方法是从硫化镍或硫化镍和硫化钴的混合硫化物形成镍铁原料，其中通过以下步骤进行处理：（1）再溶解步骤，（2）脱铁步骤 ，（3）溶剂萃取步骤，（4）羟基化步骤，（5）焙烧步骤，和（6）洗涤和煅烧步骤。
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公开(公告)号：US08343447B2
公开(公告)日：2013-01-01
申请号：US12458677
申请日：2009-07-20
申请人： Keisuke Shibayama , Yoshitomo Ozaki , Osamu Nakai
发明人： Keisuke Shibayama , Yoshitomo Ozaki , Osamu Nakai
CPC分类号： C22B23/043 , C22B23/0461
摘要： A hydrometallurgical process for a nickel oxide ore comprising obtaining an aqueous solution of crude nickel sulfate by high pressure acid leaching of a nickel oxide ore; obtaining a zinc free final solution by sulfurization of the solution; obtaining a waste solution; and scrubbing hydrogen sulfide gas from an exhaust gas. The process is characterized by at least one of the following operations: Adjusting the total volume (m3) of a sulfurization reactor to a ratio of 0.2-0.9 (m3/kg/h) relative to the input mass (kg/h) of the nickel to be introduced to the reactor; and/or subjecting the waste solution and the exhaust gas to countercurrent contact, then introducing the exhaust gas back to the scrubber and charging the waste solution from the scrubber into the sulfurization reactor.
摘要翻译： 一种用于镍氧化物矿石的湿法冶金方法，包括通过高压酸洗镍氧化物矿石获得粗硫酸镍水溶液; 通过溶液硫化获得无锌的最终溶液; 获得废液; 并从废气中洗涤硫化氢气体。 该方法的特征在于以下操作中的至少一个：将硫化反应器的总体积（m3）相对于输入质量（kg / h）的比例调整为0.2-0.9（m3 / kg / h） 将镍引入反应器; 和/或使废溶液和废气进行逆流接触，然后将废气引回到洗涤器中，并将废液从洗涤器装入硫化反应器中。
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公开(公告)号：US07563421B2
公开(公告)日：2009-07-21
申请号：US11125325
申请日：2005-05-10
IPC分类号： C22D23/00
CPC分类号： C22B23/0461 , C22B15/0093 , C22B23/043 , Y02P10/236
摘要： A hydrometallurgical process based on pressure leaching at elevated temperature for recovering nickel from nickel oxide ores, characterized by a simplified and efficient process as a whole, realizing a simplified leaching stage, reduced neutralizer consumption and precipitate production in the neutralization stage, and efficient use of recycled water.The hydrometallurgical process of the present invention, comprising a leaching stage which stirs the slurried ore in the presence of sulfuric acid at 220 to 280° C. to produce the leached slurry; solid-liquid separation stage which washes the leached slurry in multi-stages to produce the pregnant liquor and leached residue, the former containing nickel and cobalt; neutralization stage which treats the pregnant liquor in the presence of calcium carbonate incorporated to keep the pH level at 4 or less, while suppressing oxidation of the liquor, to produce the neutralization precipitate slurry and mother liquor for nickel recovery, the former containing trivalent iron; and a sulfide precipitation stage which blows hydrogen sulfide gas into the mother liquor to produce the sulfide solution and barren liquor, the former containing nickel and cobalt.
摘要翻译： 一种基于高温压力浸出以从镍氧化物矿石中回收镍的湿法冶金方法，其特征在于简化和有效的方法作为一个整体，实现了简化的浸出阶段，降低了中和剂消耗和沉淀生产在中和阶段，以及有效利用 循环水。 本发明的湿法冶金方法包括浸出阶段，在220-280℃下在硫酸存在下搅拌浆状矿石以产生浸出的浆料; 固液分离阶段，以多阶段洗涤浸出的浆液，生产怀孕液和浸出残渣，前者含镍和钴; 中和阶段，在所含的碳酸钙存在下处理怀孕液体以保持pH值在4以下，同时抑制液体氧化，产生中和沉淀物浆液和母液用于镍回收，前者含有三价铁; 以及硫化氢沉淀阶段，其将硫化氢气体吹入母液中以产生硫化物溶液和贫浆，前者含有镍和钴。
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公开(公告)号：US07018605B2
公开(公告)日：2006-03-28
申请号：US10372635
申请日：2003-02-24
CPC分类号： C02F1/70 , C02F2101/20 , C02F2209/04 , Y10S423/02
摘要： A method of sulfidation removal of zinc using hydrogen sulfide is provided, desirably at a temperature at 60° C. or lower, wherein in a container that is pressurized at 0.1 MPa or less with respect to atmospheric pressure, by making the pH of the solution 1.5 to 4.0, and the concentration of hydrogen sulfide in gas 2 volume % or greater in equilibrium with the hydrogen sulfide dissolved in the solution, the zinc in solution is removed by sulfidation to 1 mg/liter or less.
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公开(公告)号：US20050265910A1
公开(公告)日：2005-12-01
申请号：US11125325
申请日：2005-05-10
CPC分类号： C22B23/0461 , C22B15/0093 , C22B23/043 , Y02P10/236
摘要： A hydrometallurgical process based on pressure leaching at elevated temperature for recovering nickel from nickel oxide ores, characterized by a simplified and efficient process as a whole, realizing a simplified leaching stage, reduced neutralizer consumption and precipitate production in the neutralization stage, and efficient use of recycled water. The hydrometallurgical process of the present invention, comprising a leaching stage which stirs the slurried ore in the presence of sulfuric acid at 220 to 280° C. to produce the leached slurry; solid-liquid separation stage which washes the leached slurry in multi-stages to produce the pregnant liquor and leached residue, the former containing nickel and cobalt; neutralization stage which treats the pregnant liquor in the presence of calcium carbonate incorporated to keep the pH level at 4 or less, while suppressing oxidation of the liquor, to produce the neutralization precipitate slurry and mother liquor for nickel recovery, the former containing trivalent iron; and a sulfide precipitation stage which blows hydrogen sulfide gas into the mother liquor to produce the sulfide solution and barren liquor, the former containing nickel and cobalt.
摘要翻译： 一种基于高温压力浸出以从镍氧化物矿石中回收镍的湿法冶金方法，其特征在于简化和有效的方法作为一个整体，实现了简化的浸出阶段，降低了中和剂消耗和沉淀生产在中和阶段，以及有效利用 循环水。 本发明的湿法冶金方法包括浸出阶段，在220-280℃下在硫酸存在下搅拌浆状矿石以产生浸出的浆料; 固液分离阶段，以多阶段洗涤浸出的浆液，生产怀孕液和浸出残渣，前者含镍和钴; 中和阶段，在所含的碳酸钙存在下处理怀孕液体以保持pH值在4以下，同时抑制液体氧化，产生中和沉淀物浆液和母液用于镍回收，前者含有三价铁; 以及硫化氢沉淀阶段，其将硫化氢气体吹入母液中以产生硫化物溶液和贫浆，前者含有镍和钴。
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6.发明授权公开(公告)号：US08911531B2
公开(公告)日：2014-12-16
申请号：US13394202
申请日：2010-10-01
CPC分类号： C22B23/04 , C22B3/02 , C22B23/0407 , Y02P10/234
摘要： A hydrometallurgical plant for nickel laterite ore extraction having a plurality of treatment facility lines wherein the plant is capable of minimizing a decrease in throughput when line failure occurs and efficiently restoring normal operation status Each line of the treatment facility includes a pretreatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a detoxification step. The lines are coupled by pipelines, each having a valve, installed after the solid-liquid separation step for sending a liquid from the solid-liquid separation step to the neutralization step in each line and/or after the sulfurization step for sending a liquid from the sulfurization step to the detoxification step in each line.
摘要翻译： 一种用于镍红土矿石提取的湿法冶金设备，其具有多个处理设备线，其中所述设备能够最小化发生线路故障时的吞吐量的降低并且有效地恢复正常操作状态。处理设备的每一行包括预处理步骤，浸出步骤 固液分离工序，中和工序，脱锌工序，硫化工序和脱毒工序。 这些管线通过管道连接，每个管道具有阀，其在固液分离步骤之后安装，用于将液体从固 - 液分离步骤发送到每一行中的中和步骤和/或在硫化步骤之后将液体从 将硫化步骤进行到每一行的排毒步骤。
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公开(公告)号：US20100018350A1
公开(公告)日：2010-01-28
申请号：US12458677
申请日：2009-07-20
申请人： Keisuke Shibayama , Yoshitomo Ozaki , Osamu Nakai
发明人： Keisuke Shibayama , Yoshitomo Ozaki , Osamu Nakai
CPC分类号： C22B23/043 , C22B23/0461
摘要： The hydrometallurgical process for a nickel oxide ore comprising a step (1) for obtaining an aqueous solution of crude nickel sulfate by High Pressure Acid Leach of a nickel oxide ore; a step (2) for obtaining a zinc free final solution formed; a step (3) for obtaining a waste solution; and a step (4) for scrubbing a hydrogen sulfide gas in exhaust gas, wherein utilization efficiency of hydrogen sulfide gas is enhanced while maintaining nickel recovery rate.It is characterized in that at least one kind of the following operations (a) to (d) is adopted. (a) to adjust total volume (m3) of the sulfurization reactor (B) in the above step (3), at a ratio of 0.2 to 0.9, relative to input mass (kg/h) of nickel to be introduced; (b) to evaporate, under negative pressure, slurry in the above step (3), and to add hydrogen sulfide gas recovered to the above step (3); (c) to reuse exhaust gas from the sulfurization reactor in the above step (3), and add it to the step (2); and (d) to subject the waste solution in the above step (3) and exhaust gas in the above step (4) to countercurrent contact, then to introduce the exhaust gas to the scrubber again and to charge waste solution from the scrubber into the sulfurization reactor in the step (3).
摘要翻译： 一种氧化镍矿石的湿法冶金方法，包括通过氧化镍矿的高压酸浸获得粗硫酸镍水溶液的步骤（1） 用于获得形成的无锌最终溶液的步骤（2）; 用于获得废液的步骤（3）; 以及用于洗涤废气中的硫化氢气体的步骤（4），其中提高硫化氢气体的利用效率，同时保持镍回收率。 其特征在于采用以下操作（a）至（d）中的至少一种。 （a）相对于导入的镍的输入质量（kg / h）以0.2〜0.9的比例调节上述工序（3）中的硫化反应器（B）的总体积（m3） （b）在负压下蒸发上述步骤（3）中的浆料，并加入回收到上述步骤（3）中的硫化氢气体; （c）在上述步骤（3）中重新利用来自硫化反应器的废气，并将其添加到步骤（2）中; 和（d）使上述步骤（3）中的废液和上述步骤（4）中的废气逆流接触，然后再次将废气引入洗涤器，并将来自洗涤器的废液送入 步骤（3）中的硫化反应器。
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8.发明授权公开(公告)号：US08747787B2
公开(公告)日：2014-06-10
申请号：US13701951
申请日：2011-07-13
申请人： Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
发明人： Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
IPC分类号： C22B23/00
CPC分类号： C22B1/02 , C22B3/0005 , C22B3/12 , C22B3/44 , C22B23/005 , C22B23/021 , C22B23/023 , C22B23/0461 , Y02P10/234
摘要： Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step.
摘要翻译： 本发明提供从镍硫化物或含有镍和钴的混合硫化物制备镍铁的方法，其通过氧化镍矿石的湿法冶金得到，或从废渣或产品中获得。 镍铁原料的制造方法是从硫化镍或硫化镍和硫化钴的混合硫化物形成镍铁原料，其中通过以下步骤进行处理：（1）再溶解步骤，（2）脱铁步骤 ，（3）溶剂萃取步骤，（4）羟化步骤，（5）焙烧步骤，和（6）洗涤和煅烧步骤。
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公开(公告)号：US20100034716A1
公开(公告)日：2010-02-11
申请号：US12458796
申请日：2009-07-23
IPC分类号： C01G9/08
CPC分类号： C01G9/08 , C01G53/00 , C01G53/11 , C22B15/0093 , C22B19/26 , C22B23/043 , C22B23/0461 , Y02P10/234 , Y02P10/236
摘要： The separation method for zinc sulfide, in the hydrometallurgical process by a High Pressure Acid Leach for nickel oxide ore comprising leaching and solid/liquid separation step, neutralization step, zinc removal step, and nickel recovery step, which can inhibit clogging of a filter cloth and reduce a frequency of washing operation and replacement operation of a filter cloth by improving filtration performance of zinc sulfide, and inhibit decrease of nickel recovery ratio, in the zinc removal step in which zinc sulfide is formed by adding a sulfurizing agent to the neutralization final liquid containing zinc as well as nickel and cobalt and zinc sulfide is separated to obtain a mother liquid for nickel recovery containing nickel and cobalt.The separation method for zinc sulfide of the present invention is characterized in that in the above-described neutralization step, the leach residue is added to the leach liquor, and pH of the neutralization final liquid is adjusted so as to fall to the range from 3.0 to 3.5, and in the zinc removal step, the suspended solid comprising the neutralized precipitate and the leaching reside are kept remained in said neutralization final liquid so that turbidity thereof falls in the range from 100 to 400 NTU.
摘要翻译： 硫化锌的分离方法，在通过高压酸浸法进行的氧化镍矿石的湿法冶金工艺中，包括浸出和固/液分离步骤，中和步骤，锌除去步骤和镍回收步骤，其可以抑制滤布堵塞 通过提高硫化锌的过滤性能来降低洗涤操作和更换操作的频率，并且通过在中和最终添加硫化剂的锌硫化物的除锌步骤中抑制镍回收率的降低 分离含有锌以及镍和钴和硫化锌的液体，以获得含镍和钴的镍回收母液。 本发明的硫化锌的分离方法的特征在于，在上述中和工序中，将浸出残渣加入到浸出液中，调节中和最终液体的pH，使其降至3.0 至3.5，并且在锌去除步骤中，将包含中和的沉淀物和浸出的悬浮固体保持在所述中和最终液体中，使得其浊度在100至400NTU的范围内。
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公开(公告)号：US20100028227A1
公开(公告)日：2010-02-04
申请号：US12458718
申请日：2009-07-21
申请人： Keisuke Shibayama , Osamu Nakai , Yoshitomo Ozaki
发明人： Keisuke Shibayama , Osamu Nakai , Yoshitomo Ozaki
IPC分类号： C01G53/00
CPC分类号： C22B23/043 , C01G53/11 , C22B15/0093 , C22B23/0407 , C22B23/0453 , C22B23/0461 , Y02P10/236
摘要： The hydrometallurgical Process for a nickel oxide ore, which is capable of preventing inevitable operation shutdown of a leaching step and maintaining high operation efficiency as a whole process, in a trouble of the steps other than the leaching step, in a hydrometallurgical Process for a nickel oxide ore using a High Pressure Acid Leach.It is characterized in that, the hydrometallurgical Process for a nickel oxide ore using a High Pressure Acid Leach equipment equipped with the following means (a) to (c), in a trouble of the steps other than the above leaching step, the leached slurry discharged from the means (c), which is used in the above High Pressure Acid Leach equipment, is subjected to self-circulation inside the High Pressure Acid Leach equipment, by transferring to the means (a), which is used in the above High Pressure Acid Leach equipment, as well as by shutdown of receiving the ore slurry and the addition of sulfuric acid, in the above leaching step: means (a) to preliminarily increase temperature and pressure of the ore slurry; means (b) to form the leached slurry, by the addition of sulfuric acid to the ore slurry with preliminarily increased temperature and pressure, and leaching under blow of high-pressure steam and high-pressure air; means (c) to eliminate a pressurized state of the leached slurry formed.
摘要翻译： 用于镍氧化物矿石的湿法冶金方法，其能够防止浸出步骤的不可避免的操作停止并且在整个过程中保持高的操作效率，除了浸出步骤之外的步骤中，在湿法冶金方法中用于镍 氧化矿石使用高压酸浸。 其特征在于，使用装备有以下方法（a）至（c））的高压酸浸设备的氧化镍矿石的湿法冶金方法，在上述浸出步骤之外的步骤中，浸出的浆料 从上述高压酸浸设备中使用的装置（c）排出的高压酸浸设备在高压酸浸设备中进行自我循环，转移到上述高温酸浸设备中使用的（a） 在上述浸出步骤中，压力酸浸设备，以及关闭接收矿浆和加入硫酸，是指（a）预先提高矿浆的温度和压力; 表示（b）通过在预先升高的温度和压力下向矿浆中加入硫酸，并在高压蒸气和高压空气吹扫下浸出，形成浸出的浆料; 意味着（c）消除形成的浸出浆料的加压状态。
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