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公开(公告)号：EP2912649B1
公开(公告)日：2018-08-01
申请号：EP13848198.1
申请日：2013-10-18
CPC分类号： C22B47/0063 , C01B21/20 , C22B3/06 , C22B3/065 , C22B3/14 , C22B3/22 , C22B3/44 , C22B7/007 , C22B7/008 , C22B13/04 , C22B15/0089 , C22B17/04 , C22B23/0461 , C22B47/00 , C22B47/0027 , C22B47/0045 , C22B47/0072 , C22B47/0081 , Y02P10/234
摘要： An improved method for treating manganese-containing materials, such as nodules recovered by undersea mining, including reacting the materials with ammonia, and leaching with a mineral acid, and to methods for recovering valuable constituents from such nodules, especially manganese, cobalt, nickel, iron, copper, titanium, vanadium, cerium, and molybdenum. A method for the production of nitrate products is also disclosed.
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公开(公告)号：EP2860271B1
公开(公告)日：2018-04-18
申请号：EP13803603.3
申请日：2013-06-10
发明人： HIGUCHI, Hirotaka , NISHIKAWA, Isao
IPC分类号： C22B23/00 , C02F1/58 , C22B3/44 , C02F101/10 , C02F101/20 , C02F1/52 , C02F103/16
CPC分类号： C02F1/66 , C02F1/5236 , C02F2101/101 , C02F2101/203 , C02F2101/206 , C02F2103/16 , C22B23/043 , C22B23/0461
摘要： An object of the present invention is to provide a neutralization method capable of reducing the usage amount of expensive high alkaline neutralizer, and applying an efficient neutralization treatment, when applying a neutralization treatment to a barren solution to be produced in a treatment step, in which a sulfide composed of nickel and cobalt is produced from a sulfuric acid aqueous solution containing nickel and cobalt, and impurity metals containing any of iron, magnesium, and manganese at least one or more. The present invention includes a first neutralization treatment step S 11 of applying a neutralization treatment to the barren solution, with a range of pH 5.0 to 6.0 as the end point, by using calcium carbonate slurry, as a first neutralizer; and a second neutralization treatment step S 12 of applying a neutralization treatment to a solution produced in the first neutralization treatment step S 11, by using a second neutralizer, to produce a sediment containing a metal remained in the barren solution and a post-neutralization solution from which a metal ion is removed.
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公开(公告)号：EP2703503B1
公开(公告)日：2018-02-28
申请号：EP13181712.4
申请日：2013-08-26
发明人： Canbekte, Zekeriya
CPC分类号： C22B3/44 , C22B23/0461 , Y02P10/234
摘要： We propose a method of removing iron from leach solutions, obtained by leaching of metal bearing materials with acids, in the form of hydroxide and/or oxide by precipitation. The advantages with the method according to the invention include that the method can be performed at atmospheric pressure and at temperatures from ambient to boiling temperatures and that no gases are emitted. Another important advantage is, by prevention of gel formation of the iron precipitate, that solid / liquid separation becomes much easier and loss of valuable metals is minimized.
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5.发明公开
公开(公告)号：EP2990495A4
公开(公告)日：2017-04-05
申请号：EP14789088
申请日：2014-04-14
发明人： OHARA GO , SASAKI HIDEKI , KAN YASUMASA , IMAMURA MASAKI
CPC分类号： C22B23/043 , C22B3/08 , C22B3/22 , C22B3/44 , C22B23/0415 , C22B23/0461 , C22B34/32 , Y02P10/234
摘要： Provided is a hydrometallurgical process for nickel oxide ore using high pressure acid leaching to be capable of achieving improvement of durability of production facilities, simplification of the production facilities, suppression of the cost and environmental risks caused by compression of the volume of a tailings dam that stores wastes, and separation and recovery of impurity components which can be utilized as a resource. The hydrometallurgical process for nickel oxide ore of recovering nickel and cobalt using the high pressure acid leaching is characterized by including at least one step selected from step (A) (a step of separating and recovering chromite particles), step (B-1) (a step of neutralizing a leachate with a magnesium-based neutralizing agent), and step (B-2) (a step of neutralizing a leach residue slurry with the magnesium-based neutralizing agent).
摘要翻译： 本发明提供一种使用高压酸浸的氧化镍矿石的湿法冶金工艺，其能够实现生产设备的耐久性的提高，生产设备的简化，压制尾矿坝的体积造成的成本和环境风险， 存储废物，分离和回收可用作资源的杂质成分。 使用高压酸浸回收镍和钴的氧化镍矿的湿法冶金工艺的特征在于包括选自步骤（A）（分离和回收铬铁矿颗粒的步骤），步骤（B-1）（ 用镁基中和剂中和浸出液的步骤）和步骤（B-2）（用镁基中和剂中和浸出残渣浆料的步骤）。
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公开(公告)号：EP2933234B1
公开(公告)日：2017-01-04
申请号：EP13862448.1
申请日：2013-11-22
发明人： NAKAI, Takayuki , MATSUBARA, Satoshi , NAKAI, Osamu , KYODA, Yoji
CPC分类号： C02F1/66 , C02F1/74 , C02F2101/20 , C02F2101/203 , C02F2101/206 , C02F2103/16 , C22B23/043 , C22B23/0453 , C22B23/0461
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公开(公告)号：EP3100804A1
公开(公告)日：2016-12-07
申请号：EP15743246.9
申请日：2015-01-27
发明人： YANAGISAWA Kazumichi , Zhang Junhao , HEGURI Shin-ichi , OHARA Hideki , IKEDA Osamu , YONEYAMA Tomoaki , KUDO Yohei , OZAKI Yoshitomo
CPC分类号： B22F3/10 , B22F1/0003 , B22F9/24 , B22F9/26 , B22F2009/245 , B22F2301/15 , B22F2998/10 , B22F2999/00 , C01C1/028 , C01C1/244 , C22B3/0005 , C22B23/0407 , C22B23/0461 , C22B23/0476 , Y02P10/234 , B22F2201/013 , B22F3/02
摘要： Provided is a production method for producing coarse particles of high purity nickel powder from a nickel ammine sulfate complex solution using fine nickel powder and using industrially inexpensive hydrogen gas. The method for producing nickel powder from a nickel ammine sulfate complex solution comprises the following treatment steps of: (1) a seed crystal production step of mixing a nickel sulfate solution and hydrazine to produce nickel powder having an average particle size of 0.1 to 5 µm serving as seed crystals; (2) a seed crystal addition step of adding the nickel powder obtained in the step (1) as seed crystals to the nickel ammine sulfate complex solution to form a mixed slurry; (3) a reduction step of blowing hydrogen gas into the mixed slurry obtained in the seed crystal addition step to form a reduced slurry containing nickel powder formed by precipitation of a nickel component in the mixed slurry on the seed crystals; and (4) a growth step of subjecting the reduced slurry obtained in the reduction step to solid-liquid separation to separate and recover the nickel powder as a solid phase component and then blowing hydrogen gas into a solution prepared by adding the nickel ammine sulfate complex solution to the recovered nickel powder to grow the nickel powder to form high purity nickel powder.
摘要翻译： 本发明提供使用细镍粉和使用工业上便宜的氢气从硫酸镍配合物溶液中制造高纯镍粉末的粗颗粒的制造方法。 从硫酸镍络合物溶液制备镍粉的方法包括以下处理步骤：（1）将硫酸镍溶液和肼混合以制备平均粒度为0.1至5μm的镍粉的晶种生产步骤 作为晶种; （2）将在步骤（1）中获得的镍粉末作为晶种添加到硫酸镍络合物溶液中以形成混合浆料的晶种添加步骤; （3）在晶种添加工序中得到的混合浆料中吹入氢气的还原工序，形成含有通过在上述混合浆料中析出镍成分而形成的镍粉末的还原浆料; 和（4）将在还原步骤中获得的还原浆料进行固液分离的生长步骤，以分离和回收作为固相成分的镍粉末，然后将氢气吹入通过加入硫酸镍络合物 对回收的镍粉的溶液进行镍粉生长以形成高纯镍粉。
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公开(公告)号：EP2824202B1
公开(公告)日：2016-09-21
申请号：EP13757764.9
申请日：2013-03-01
CPC分类号： C22B23/0461 , C22B3/04 , C22B23/0423 , Y02P10/234
摘要： The purpose of the present invention is to provide a method capable of improving the filterability in separating a zinc sulfide produced by applying sulfurization treatment to a post-neutralization solution containing zinc together with nickel and cobalt in a dezincification step, and of prolonging a service life of a filter cloth, in a hydrometallurgical process for nickel oxide ore. The method comprises a neutralization reaction step of neutralizing leachate in a neutralization tank (11); a separation step of separating neutralized slurry into a neutralized sediment and a post-neutralization solution by adding flocculant to the neutralized slurry; a measuring step of measuring the viscosity of the post-neutralization solution; a temporarily storing step of temporarily storing the post-neutralization solution in a storage tank; and a transfer step of transferring the stored post-neutralization solution to a dezincification reaction tank (31) used in a dezincification step S4 subsequent to a neutralization step S3. When the measured viscosity of the post-neutralization solution is higher than 0.10 sec/cm 2 ·mL that is the time required for the post-neutralization solution of 50 mL to pass through a membrane filter having a mesh opening size of 0.45 µm, a flow rate of the post-neutralization solution to be transferred to the dezincification reaction tank (31) is controlled and the post-neutralization solution is circulated by returning back a predetermined rate of the post-neutralization solution to the neutralization reaction tank (11).
摘要翻译： 本发明的目的是提供一种能够提高在脱锌工序中将通过施加硫化处理而生成的硫化锌与含有镍和钴的中和后溶液分离的过滤性，并且延长使用寿命的方法 的滤布，用于氧化镍矿石的湿法冶金方法。 该方法包括在中和罐（11）中中和渗滤液的中和反应步骤; 分离步骤，通过向中和的浆料中加入絮凝剂将中和的浆料分离成中和的沉淀物和中和后溶液; 测量中和后溶液的粘度的测量步骤; 临时存储步骤，将中和后溶液临时存储在储罐中; 以及将中和后的溶液转移到中和工序S3之后的脱锌工序S4中使用的脱锌反应槽（31）的转印工序。 当中和后溶液的测量粘度高于0.10秒/厘米2·mL时，其是50mL通过网眼开口尺寸为0.45μm的膜过滤器的中和后溶液所需的时间， 控制转移到脱锌反应槽（31）的中和后溶液的流量，使中和后的溶液返回中和反应槽（11），使中和后溶液循环。
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9.发明公开SULPHURIC ACID ACIDIC SOLUTION NEUTRALISATION METHOD AND NICKEL OXIDE ORE HYDROMETALLURGICAL METHOD 审中-公开VERFAHREN ZUR中和型EINER SAURENSCHWEFELSÄURELSSUNGUND HYDROMETALLURGISCHES NICKELOXIDERZVERFAHREN
公开(公告)号：EP3045432A1
公开(公告)日：2016-07-20
申请号：EP15791968.9
申请日：2015-01-21
CPC分类号： C22B23/0461 , C02F1/66 , C22B3/04 , C22B3/08 , C22B3/44 , C22B23/00 , C22B23/043 , Y02P10/234
摘要： Provided is a method for neutralizing a sulfuric acid acidic solution, whereby the pH of a neutralized solution can be stabilized, and also provided is a hydrometallurgical method for nickel oxide ores.
The hydrometallurgical method comprises a sulfuric acid leaching step of leaching an ore slurry of a nickel oxide ore with sulfuric acid, a neutralization step of neutralizing a crude nickel sulfate aqueous solution by adding a neutralizing agent thereto, and a dezincification step of removing zinc as zinc sulfide by adding a sulfurizing agent to a neutralized solution; wherein in the neutralization step, the amount of the neutralizing agent added is adjusted using, as an index, a neutralizing agent addition ratio that indicates the amount of the neutralizing agent added relative to the amount of free sulfuric acid in the crude nickel sulfate aqueous solution. This method is not affected by changes in the liquid temperature or by neutralized precipitates adhering to a pH meter, can prevent insufficient addition and excessive addition of the neutralizing agent, and can stabilize the pH of the neutralized solution. The removal efficiency of zinc can be maintained in the dezincification step, and the efficiency of solid-liquid separation can be maintained.摘要翻译： 提供一种中和硫酸酸性溶液的方法，由此中和溶液的pH可以稳定，并且还提供了一种用于氧化镍矿石的湿法冶金方法。 所述湿式冶金法包括：用硫酸浸出氧化镍矿石的矿浆的硫酸浸出工序，通过向其中添加中和剂中和粗制硫酸镍水溶液的中和工序，以锌除去锌的脱锌工序 通过向中和溶液中加入硫化剂来形成硫化物; 其中，在中和工序中，使用表示相对于粗硫酸镍水溶液中的游离硫酸的量添加的中和剂的量的中和剂添加比作为指标，调整中和剂的添加量 。 该方法不受液体温度变化或粘附在pH计上的中和沉淀物的影响，可以防止中和剂的加入不足和过量添加，并且可以稳定中和溶液的pH。 在脱锌工序中可以保持锌的除去效率，可以保持固液分离的效率。
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10.发明公开IMPROVED METAL SOLVENT EXTRACTION REAGENTS AND USE THEREOF 有权VERBESSERTE REENENZIEN ZURMETALLLÖSUNGSMITTELEXTRAKTIONUND VERWENDUNG DAVON
公开(公告)号：EP2678310A4
公开(公告)日：2015-12-16
申请号：EP12749346
申请日：2012-02-24
申请人： BASF SE
发明人： VIRNIG MICHAEL , BENDER JACK , EMMERICH NATHAN C
IPC分类号： C07C251/48 , C07C249/14 , G01N31/22
CPC分类号： C22B15/0089 , C22B3/0017 , C22B3/44 , C22B19/20 , C22B23/0461 , C22B34/34 , Y02P10/234
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