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21. 发明申请

US20150014225A1 METHOD FOR RECOVERING CHROMITE, AND METHOD FOR WET SMELTING OF NICKEL OXIDE ORE 有权
标题翻译：用于回收铬酸盐的方法，以及用于湿式氧化镍氧化物的方法
公开(公告)号：US20150014225A1
公开(公告)日：2015-01-15
申请号：US14384616
申请日：2012-04-06
申请人： Hiroyuki Mitsui , Osamu Nakai , Hirotaka Kawasaki , Hiroshi Kobayashi , Tatsuya Higaki , Atsushi Idegami
发明人： Hiroyuki Mitsui , Osamu Nakai , Hirotaka Kawasaki , Hiroshi Kobayashi , Tatsuya Higaki , Atsushi Idegami
IPC分类号： C22B3/22 , B03B7/00
CPC分类号： C22B3/22 , B03B7/00 , C22B23/005 , C22B23/04 , C22B23/043
摘要： A method for recovering chromite from ore slurry obtained by processing nickel oxide ore, the raw material, in a plant for the wet smelting of nickel oxide ore. In the method chromite is separated and recovered from an ore slurry obtained from a nickel oxide ore when nickel and cobalt are recovered from the nickel oxide ore. The method has a grain diameter separation step for separating the ore slurry on the basis of a predetermined classification point according to the difference in the grain diameter of particles contained in the supplied ore slurry and a sedimentation separation step for causing the oversized ore slurry separated in the grain diameter separation step to undergo sedimentation and concentration on the basis of a target classification point, and recovering the chromite. The coarse particle content of the oversized ore slurry separated in the grain diameter separation step is adjusted to 30-50%.
摘要翻译：通过在用于氧化镍矿石的湿法冶炼的设备中加工氧化镍矿石（原材料）而获得的矿石浆料中回收铬铁矿的方法。在从镍氧化物矿石中回收镍和钴的方法中，从镍氧化物矿石获得的矿浆中分离和回收铬铁矿。该方法具有粒径分离步骤，用于根据所提供的矿石浆料中所含的颗粒的粒径的差异，根据预定的分级点分离矿石浆料;以及沉淀分离步骤，用于使过大的矿石浆料分离粒径分离步骤，基于目标分级点进行沉降浓缩，回收铬铁矿。将在粒径分离步骤中分离的过大矿石浆料的粗颗粒含量调节至30-50％。

22. 发明授权

US08916115B2 Nickel recovery loss reduction method, hydrometallurgical method for nickel oxidized ore, and sulfuration treatment system 有权
标题翻译：镍回收损耗减少法，镍氧化矿石湿法冶金法和硫化处理系统
公开(公告)号：US08916115B2
公开(公告)日：2014-12-23
申请号：US14237767
申请日：2012-08-09
申请人： Satoshi Matsubara , Osamu Nakai , Hiroyuki Mitsui
发明人： Satoshi Matsubara , Osamu Nakai , Hiroyuki Mitsui
IPC分类号： C01G53/00 , C01G53/11 , C22B3/04 , C22B3/44 , B01J10/00 , B01J19/00 , C22B3/00 , C22B3/02
CPC分类号： C22B3/44 , C22B3/02 , C22B23/043 , Y02P10/234
摘要： A nickel recovery loss reduction method that makes it possible to reduce nickel recovery loss by lowering the concentration of fine floating solid components in overflow liquid in precipitating and separating treatments, and consequently to further reduce a nickel recovery loss, a hydrometallurgical method for nickel oxidized ore to which the nickel recovery loss reduction method is applied, and a sulfurizing treatment system. The present invention is a nickel recovery loss reduction method in a sulfurizing step for blowing hydrogen sulfide gas into a nickel containing sulfuric acid aqueous solution to generate nickel-containing sulfides and a barren liquid, and the nickel-containing sulfides with the average particle size adjusted to a predetermined size or larger are added as seed crystals to the sulfuric acid aqueous solution. It is more preferable to adjust the average particle size of the nickel sulfides to be added as seed crystals to 55 μm or more.
摘要翻译：一种镍回收损失降低方法，其可以通过降低沉淀和分离处理中的溢流液中的微细浮动固体成分的浓度来降低镍回收损失，从而进一步降低镍回收损失，镍氧化矿石的湿法冶金方法应用镍回收损失减少法的方法和硫化处理系统。本发明是在将硫化氢气体吹入含镍硫酸水溶液中以产生含镍硫化物和贫瘠液体的硫化步骤中的镍回收损耗降低方法，并且调节平均粒度的含镍硫化物作为晶种添加到规定尺寸以上的硫酸水溶液。更优选将作为晶种添加的硫化镍的平均粒径调整为55μm以上。

23. 发明授权

US08747787B2 Method for producing raw material for ferronickel smelting from low grade nickel oxide ore 有权
标题翻译：低品位氧化镍矿冶炼镍铁原料生产方法
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。

24. 发明申请

US20100034716A1 Separation method for zinc sulfide 有权
标题翻译：硫化锌分离方法
公开(公告)号：US20100034716A1
公开(公告)日：2010-02-11
申请号：US12458796
申请日：2009-07-23
申请人： Osamu Nakai , Yoshitomo Ozaki , Keisuke Shibayama , Takao Ooishi , Satoshi Matsumoto
发明人： Osamu Nakai , Yoshitomo Ozaki , Keisuke Shibayama , Takao Ooishi , Satoshi Matsumoto
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。

25. 发明申请

US20100028227A1 Hydrometallurgical process for nickel oxide ore 审中-公开
标题翻译：氧化镍矿石的冶金工艺
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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