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11. 发明授权

US07208075B2 Reduction of metal oxides in an electrolytic cell 有权
标题翻译：还原电解槽中的金属氧化物
公开(公告)号：US07208075B2
公开(公告)日：2007-04-24
申请号：US10637548
申请日：2003-08-11
申请人： Lazar Strezov , Ivan Ratchev , Steve Osborn
发明人： Lazar Strezov , Ivan Ratchev , Steve Osborn
IPC分类号： C25C3/28
CPC分类号： C25C7/005 , C22B5/02 , C22B34/129 , C25C3/00 , C25C3/28
摘要： A method of reducing a metal oxide in a solid state, in an electrolytic cell, is provided, as is an electrolytic cell suitable for performing the method. The cathode of the electrolytic cell is formed at least in part from the metal oxide to be reduced, and the electrolyte includes cations of a metal that is capable of chemically reducing the cathode metal oxide. The method includes operating the cell at a potential that is above the potential at which cations of the reducing metal will deposit as metal on the cathode.
摘要翻译：提供了一种在电解槽中还原固态的金属氧化物的方法，适用于执行该方法的电解槽也是如此。电解槽的阴极至少部分地从要还原的金属氧化物形成，并且电解质包括能够化学还原阴极金属氧化物的金属的阳离子。该方法包括以高于还原金属的阳离子在阴极上作为金属沉积的电位的电位操作电池。

12. 发明授权

US06811678B2 Electrochemical reduction of beryllium oxide in an electrolytic cell 有权
公开(公告)号：US06811678B2
公开(公告)日：2004-11-02
申请号：US10261582
申请日：2002-10-02
申请人： Lazar Strezov , Ivan Ratchev , Steve Osborn
发明人： Lazar Strezov , Ivan Ratchev , Steve Osborn
IPC分类号： C25C334
CPC分类号： C25C3/34
摘要： An electrolytic cell for reducing a beryllium oxide in solid state, and a method for achieving this reduction, are provided. The electrolytic cell and method employ an anode, a cathode formed in part from beryllium oxide, and a molten electrolyte which includes cations of a metal that is capable of reducing beryllium oxide. The reduction process involves operating the cell at a potential that is above a potential at which the reducing cations in the electrolyte will deposit as a metal on the cathode.

13. 发明授权

US06663763B2 Reduction of metal oxides in an electrolytic cell 有权
标题翻译：还原电解槽中的金属氧化物
公开(公告)号：US06663763B2
公开(公告)日：2003-12-16
申请号：US10175348
申请日：2002-06-20
申请人： Lazar Strezov , Ivan Ratchev , Steve Osborn
发明人： Lazar Strezov , Ivan Ratchev , Steve Osborn
IPC分类号： C25C300
CPC分类号： C25C7/005 , C22B5/02 , C22B34/129 , C25C3/00 , C25C3/28
摘要： A method of reducing a metal oxide in a solid state, in an electrolytic cell, is provided, as is an electrolytic cell suitable for performing the method. The cathode of the electrolytic cell is formed at least in part from the metal oxide to be reduced, and the electrolyte includes cations of a metal that is capable of chemically reducing the cathode metal oxide. The method includes operating the cell at a potential that is above the potential at which cations of the reducing metal will deposit as metal on the cathode.
摘要翻译：提供了一种在电解槽中还原固态的金属氧化物的方法，适用于执行该方法的电解槽也是如此。电解槽的阴极至少部分地从要还原的金属氧化物形成，并且电解质包括能够化学还原阴极金属氧化物的金属的阳离子。该方法包括以高于还原金属的阳离子在阴极上作为金属沉积的电位的电位操作电池。

14. 发明申请

US20110103998A1 Production of Nickel 审中-公开
标题翻译：生产镍
公开(公告)号：US20110103998A1
公开(公告)日：2011-05-05
申请号：US12739767
申请日：2008-10-24
申请人： Ivan Ratchev , Grant Caffery , Simon Philip Sullivan , René Ignacio Olivares , Gregory David Rigby
发明人： Ivan Ratchev , Grant Caffery , Simon Philip Sullivan , René Ignacio Olivares , Gregory David Rigby
IPC分类号： C22C19/03 , C01G53/11 , C09K3/00 , C22B23/00
CPC分类号： C22B23/06 , C22B23/023 , C22B23/025 , C22B23/0407 , C22B23/0461
摘要： A method of producing a nickel product (including nickel alloy products and products such as nickel matte) from a nickel intermediate product is disclosed. The method comprises smelting a dried nickel intermediate product in a molten bath-based smelter and forming a molten pool containing a molten metal and a slag, with the molten metal being the nickel product. Intermediate and end products produced by the method are also disclosed.
摘要翻译：公开了一种从镍中间产品生产镍产品（包括镍合金产品和诸如镍锍的产品）的方法。该方法包括在熔融浴基冶炼炉中熔炼干燥的镍中间产物，并形成含有熔融金属和熔渣的熔池，熔融金属为镍产品。还公开了通过该方法生产的中间产品和最终产品。

15. 发明授权

US07758740B2 Electrochemical reduction of metal oxides 有权
标题翻译：电化学还原金属氧化物
公开(公告)号：US07758740B2
公开(公告)日：2010-07-20
申请号：US10561597
申请日：2004-06-21
申请人： Andrew Arthur Shook , Gregory David Rigby , Ivan Ratchev
发明人： Andrew Arthur Shook , Gregory David Rigby , Ivan Ratchev
IPC分类号： C25C3/00 , C25C7/00 , C25C7/02
CPC分类号： C25C7/007 , C22B1/2406 , C22B5/02 , C22B34/129 , C25C3/28 , C25C5/04 , C25C7/025
摘要： An electrolytic cell for electrochemically reducing metal oxide powders and/or pellets is disclosed. The cell includes a cathode (25) in the form of a plate that has an upper surface for supporting metal oxide powders and/or pellets. The plate is horizontally disposed or slightly inclined and has a forward end and a rearward end and is immersed in an electrolyte bath. The plate is supported for movement so as to cause metal oxide powders and/or pellets on the upper surface of the plate to move toward a forward end of the plate. The cell also includes a means for causing metal oxide powders and/or pellets to move over the upper surface of the plate toward the forward end of the cathode while in contact with molten electrolyte whereby electrochemical reduction of the metal oxide to metal can occur. A method of continuously or semi-continuously reducing metal oxide powders and/or pellets in the cell is also disclosed.
摘要翻译：公开了用于电化学还原金属氧化物粉末和/或丸粒的电解池。电池包括板形式的阴极（25），其具有用于支撑金属氧化物粉末和/或颗粒的上表面。该板水平放置或稍微倾斜，并具有前端和后端，并浸入电解液浴中。支撑板移动，以使板的上表面上的金属氧化物粉末和/或颗粒向板的前端移动。电池还包括使金属氧化物粉末和/或丸粒在与熔融电解液接触的同时朝向阴极的前端移动到板的上表面上的装置，由此可以发生金属氧化物到金属的电化学还原。还公开了在电池中连续或半连续还原金属氧化物粉末和/或丸粒的方法。

16. 发明申请

US20080011126A1 Production of Ferronickel 失效
标题翻译：铁镍铁的生产
公开(公告)号：US20080011126A1
公开(公告)日：2008-01-17
申请号：US11839876
申请日：2007-08-16
申请人： Alexey Duarte , Houyuan Liu , Ivan Ratchev
发明人： Alexey Duarte , Houyuan Liu , Ivan Ratchev
IPC分类号： C22C38/08 , C21B15/00
CPC分类号： C21B15/00 , C22B1/244 , C22B3/42 , C22B5/12 , C22B23/023 , C22B23/0453 , Y02P10/234
摘要： A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of: providing a mixed nickel iron hydroxide product; pelletising the mixed nickel iron hydroxide product to produce nickel iron hydroxide pellets; calcining the nickel iron hydroxide pellets to produce mixed nickel iron oxide pellets; and reducing the nickel iron oxide pellets with one or more reducing gases at high temperatures to produce ferronickel pellets.
摘要翻译：一种由混合的氢氧化镍氢产物生产镍铁产品的方法，所述方法包括以下步骤：提供混合的氢氧化镍氢氧化物产物; 将混合的镍氢氧化铁产物造粒以生产氢氧化镍氢氧化物颗粒; 煅烧镍氢氧化镍颗粒以制备混合的镍铁氧化物颗粒; 以及在高温下用一种或多种还原性气体还原镍铁氧化物颗粒以制备铁镍矿颗粒。

17. 发明授权

US08460429B2 Production of nickel 有权
标题翻译：生产镍
公开(公告)号：US08460429B2
公开(公告)日：2013-06-11
申请号：US12742828
申请日：2009-02-12
申请人： Ivan Ratchev , Gregory David Rigby , René Ignacio Olivares , Grant Caffery
发明人： Ivan Ratchev , Gregory David Rigby , René Ignacio Olivares , Grant Caffery
IPC分类号： C22B7/04 , C22B23/00
CPC分类号： C22B5/10 , C22B9/10 , C22B23/02 , C22B23/023
摘要： A method of smelting a nickel intermediate product in a smelter that contains a molten bath of metal and slag to produce a nickel product, the method comprising supplying the nickel intermediate product and a solid reductant to the smelter and smelting the nickel intermediate product to produce molten nickel, and controlling the chemistry of the slag so that the slag has (a) a high solubility for elements and compounds in the nickel intermediate product that are regarded as contaminants in the nickel product and (b) a liquidus temperature in the range of 1300-1700 C.
摘要翻译：一种熔炼冶炼中的镍中间产物的方法，该冶炼炉含有金属和炉渣的熔池以产生镍产品，该方法包括将镍中间产物和固体还原剂供应给冶炼厂并熔炼镍中间产物以产生熔融的镍，并且控制炉渣的化学性质，使得炉渣具有（a）在镍中间产物中被认为是镍产品中的污染物的元素和化合物的高溶解度，以及（b）液相线温度在1300 -1700℃

18. 发明授权

US07935171B2 Production of metallic nickel with low iron content 失效
标题翻译：生产含铁量低的金属镍
公开(公告)号：US07935171B2
公开(公告)日：2011-05-03
申请号：US12438418
申请日：2007-08-22
申请人： Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
发明人： Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
IPC分类号： C22B3/42 , C22B23/00
CPC分类号： C22B23/043 , C22B3/42 , C22B23/0461 , C22B23/0484 , Y02P10/234
摘要： A process for producing a metallic nickel product with a low iron content, that includes: (i) providing an acidic product liquor; (ii) subjecting the acidic product liquor to an ion exchange process to absorb the nickel and part of the iron; (iii) eluting the nickel and iron to produce an eluate containing the nickel and iron. (iv) neutralising the eluate to leave an iron depleted eluate; (v) neutralising the iron depleted eluate to cause precipitation of nickel hydroxide containing low iron; (vi) calcining the nickel hydroxide to convert it to nickel oxide; (vii) subjecting the nickel oxide to direct smelting in the presence of a reductant to produce a molten nickel phase; and (viii) refining the molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
摘要翻译：一种制备铁含量低的金属镍产品的方法，包括：（i）提供酸性产物液; （ii）使酸性产物液体进行离子交换过程以吸收镍和部分铁; （iii）洗脱镍和铁以产生含有镍和铁的洗脱液。（iv）中和洗脱液以留下耗尽铁的洗脱液; （v）中和不含铁的洗脱液，使含有低铁的氢氧化镍沉淀; （vi）煅烧氢氧化镍以将其转化为氧化镍; （vii）使镍氧化物在还原剂存在下直接熔炼以产生熔融的镍相; 和（viii）通过氧化来精炼熔融镍相以产生具有低铁含量的金属镍产品。

19. 发明申请

US20100154593A1 Production of Metallic Nickel with Low Iron Content 失效
标题翻译：低铁含量的金属镍生产
公开(公告)号：US20100154593A1
公开(公告)日：2010-06-24
申请号：US12438418
申请日：2007-08-22
申请人： Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
发明人： Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
IPC分类号： C22B23/00 , C22B9/16 , C22B1/00
CPC分类号： C22B23/043 , C22B3/42 , C22B23/0461 , C22B23/0484 , Y02P10/234
摘要： A process for producing a metallic nickel product with a low iron content, including the steps of: (i) providing an acidic product liquor containing at least nickel and iron; (ii) subjecting said acidic product liquor to an ion exchange process wherein an ion exchange resin selectively absorbs said nickel and part of the iron from said product liquor; (iii) eluting the nickel and iron from said resin with an acidic solution to produce an eluate containing said nickel and iron. (iv) neutralising said eluate to a pH value in the range from 2.5 to 3.5 to cause precipitation of a substantial amount of said iron, leaving an iron depleted eluate; (v) neutralising the iron depleted eluate to a pH value in the range from 7 to 8 to cause precipitation of nickel hydroxide containing low iron; (vi) calcining said nickel hydroxide to convert it to nickel oxide; (vii) subjecting said nickel oxide to direct smelting in the presence of a reductant to produced a molten nickel phase; and (viii) refining said molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
摘要翻译：一种制备铁含量低的金属镍产品的方法，包括以下步骤：（i）提供至少含有镍和铁的酸性产物液; （ii）使所述酸性产物液体进行离子交换过程，其中离子交换树脂从所述产物液体中选择性地吸收所述镍和部分铁; （iii）用酸性溶液从所述树脂中洗脱镍和铁，以产生含有所述镍和铁的洗脱液。（iv）将所述洗脱液中和到2.5至3.5的pH值以引起大量所述铁沉淀，留下铁耗尽的洗脱液; （v）将贫铁洗脱液中和至pH7至8，使含有低铁的氢氧化镍沉淀; （vi）煅烧所述氢氧化镍以将其转化为氧化镍; （vii）使所述镍氧化物在还原剂存在下直接熔炼以产生熔融镍相; 和（viii）通过氧化来精炼所述熔融镍相以产生具有低铁含量的金属镍产品。

20. 发明申请

US20080047845A1 Electrochemical Reduction of Metal Oxides 审中-公开
标题翻译：金属氧化物的电化学还原
公开(公告)号：US20080047845A1
公开(公告)日：2008-02-28
申请号：US10575800
申请日：2004-10-14
申请人： Gregory David Rigby , Ivan Ratchev , Andrew Arthur Shook
发明人： Gregory David Rigby , Ivan Ratchev , Andrew Arthur Shook
IPC分类号： C25C1/22
CPC分类号： C25C7/007 , C22B4/08 , C22B34/129 , C25C3/28 , C25C5/04
摘要： A process for electrochemically reducing a metal oxide feed material in a solid state in an electrolytic cell is disclosed. The cell includes a molten bath of electrolyte, an anode, a cathode, and a means for applying a potential across the anode and the cathode. The process is characterised by supplying an amount of electrolyte into the bath that is greater than the amount of electrolyte that is required to replace electrolyte removed from the bath with reduced material and removing molten electrolyte from the bath to maintain the bath height at a required height or within a range of required heights.
摘要翻译：公开了一种在电解槽中电化学还原固态金属氧化物进料的方法。电池包括电解液的熔池，阳极，阴极和用于在阳极和阴极上施加电位的装置。该方法的特征在于将一定量的电解质供应到浴中，其量大于用还原材料取代从浴中除去的电解质并从浴中除去熔融的电解质以保持浴高度达到所需高度所需的电解质的量或在所需高度的范围内。

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