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1. 发明授权

US08097144B2 Aluminium electrowinning cell with enhanced crust 失效
标题翻译：具有强化外壳的铝电解冶金电池
公开(公告)号：US08097144B2
公开(公告)日：2012-01-17
申请号：US12224923
申请日：2007-02-26
申请人： Thinh T. Nguyen , René Von Kaenel , Vittorio De Nora
发明人： Thinh T. Nguyen , René Von Kaenel , Vittorio De Nora
IPC分类号： C25C3/08 , C25C7/00 , C25C3/06 , C25C3/10
CPC分类号： C25C3/08 , C25C3/12
摘要： A cell for the electrowinning of aluminium has a cavity for containing electrolyte (20) and one or more non emerging active anode bodies (5) that are suspended in the electrolyte. The electrolyte's surface (21,21′) has an expanse extending over the cavity and is substantially covered by a self-formed crust (25) of frozen electrolyte. The crust is mechanically reinforced by at least one preformed refractory body (30, 30′,30″). The electrolyte crust is formed against the preformed refractory body and bonded thereto so as to inhibit mechanical failure of the crust and collapse of the crust into the cavity.
摘要翻译：用于电解提取铝的电池具有用于容纳电解质（20）的空腔和悬浮在电解质中的一个或多个不出现的活性阳极体（5）。电解质的表面（21,21'）具有在空腔上延伸并且基本上由冷冻电解质的自形成壳体（25）覆盖的穹隆。地壳由至少一个预成型的耐火材料体（30,30'，30“）机械加固。电解质外壳与预制的耐火材料体形成并结合在一起，以防止外壳的机械故障和外壳塌陷到空腔内。

2. 发明申请

US20110100834A1 High stability flow-through non-carbon anodes for aluminium electrowinning 审中-公开
标题翻译：用于铝电解沉积的高稳定性流通非碳阳极
公开(公告)号：US20110100834A1
公开(公告)日：2011-05-05
申请号：US11628211
申请日：2005-05-25
申请人： Vittorio De Nora , Thinh T. Nguyen
发明人： Vittorio De Nora , Thinh T. Nguyen
IPC分类号： C25C3/06 , C25C3/08 , C25C3/12
CPC分类号： C25C3/12 , C25C3/06
摘要： A cell for the electrowinning of aluminium from alumina dissolved in a fluoride-containing molten electrolyte, comprises a non-carbon metal-based anode having an electrically conductive metallic structure. This anode structure comprises an outer part with an electrochemically active anode surface on which, during electrolysis, oxygen is anodically evolved, and which is suspended in the electrolyte substantially parallel to a facing cathode. The anode structure has one or more flow-through openings extending from the active anode surface through the metallic structure, the flow-through opening(s) being arranged for guiding a circulation of electrolyte driven by the fast escape of anodically evolved oxygen. The outer part of the anode comprises a layer that contains predominantly cobalt oxide CoO to enhance the stability of the anode.
摘要翻译：用于从溶解在含氟化物的熔融电解质中的氧化铝电解提取铝的电池包括具有导电金属结构的非碳金属基阳极。该阳极结构包括具有电化学活性阳极表面的外部部分，在电解期间，氧被阳极放电，并且其悬浮在基本上平行于面向阴极的电解质中。阳极结构具有从活性阳极表面延伸通过金属结构的一个或多个流通开口，所述流通开口布置成用于引导由阳极放出的氧的快速逸出驱动的电解质的循环。阳极的外部部分包含主要含有氧化钴CoO的层，以增强阳极的稳定性。

3. 发明授权

US07846309B2 Metal electrowinning cell with electrolyte purifier 有权
标题翻译：金属电解电池与电解液净化器
公开(公告)号：US07846309B2
公开(公告)日：2010-12-07
申请号：US10565524
申请日：2004-08-10
申请人： Thinh T. Nguyen , Frank Schnyder , Vittorio De Nora
发明人： Thinh T. Nguyen , Frank Schnyder , Vittorio De Nora
IPC分类号： C25C3/08 , C25C3/06
CPC分类号： C25C3/00 , C25C3/06 , C25C3/08 , C25C7/005
摘要： A cell for electrowinning a metal, in particular aluminium, from a compound thereof dissolved in an electrolyte (30) comprises an anode (40) and a cathode (10,11) that contact the electrolyte (30), the cathode (10,11) being during use at a cathodic potential for reducing thereon species of the metal to be produced from the dissolved compound. The electrolyte (30) further contains species of at least one element that is liable to contaminate the product metal (20) and that has a cathodic reduction potential which is less negative than the cathodic potential of the metal to be produced. The cell further comprises a collector (50) for removing species of such element (s) from the electrolyte (30). During use the collector (50) is at a potential that is: less negative than the cathodic potential of the produced metal (20) to inhibit reduction thereon of species of the metal to be produced; and at or more negative than the reduction potential of the species of said element(s) to allow reduction thereof on the collector (50). The cell is so arranged that species of said element(s) are reduced on the collector (50) rather than on the cathode (10,11) so as to inhibit contamination of the product metal (20) by said element(s).
摘要翻译：用于从溶解在电解质（30）中的化合物电解金属（特别是铝）的电池包括与电解质（30）接触的阳极（40）和阴极（10,11），阴极（10,11 ）在阴极电位的使用期间，以从其中减少由溶解的化合物产生的金属的种类。电解质（30）还含有易于污染产物金属（20）的至少一种元素的物质，并且具有阴极还原电位，所述阴极还原电位比所制备的金属的阴极电位小。电池还包括用于从电解质（30）去除这些元件的种类的收集器（50）。在使用期间，收集器（50）的电位为：比所产生的金属（20）的阴极电位小的负值，以抑制待生产的金属的种类; 并且处于或多于所述元件的种类的还原电位为负，以允许在集电体（50）上还原。电池被布置成使得所述元件的种类在集电体（50）而不是阴极（10,11）上减少，以便抑制所述元件对产品金属（20）的污染。

4. 发明授权

US07846308B2 Non-carbon anodes 有权
标题翻译：非碳阳极
公开(公告)号：US07846308B2
公开(公告)日：2010-12-07
申请号：US10591634
申请日：2005-03-18
申请人： Vittorio De Nora , Thinh T. Nguyen
发明人： Vittorio De Nora , Thinh T. Nguyen
IPC分类号： C25C3/06 , C25C3/08 , C25C3/12
CPC分类号： C25C3/12 , C25C3/08 , C25C3/18
摘要： An anode for electrowinning of aluminium from alumina comprises a cobalt-containing metallic outer part that is covered with an integral oxide layer containing predominantly cobalt oxide CoO. The integral oxide layer can be formed by surface oxidation of cobalt from the metallic outer part before use.
摘要翻译：用于从氧化铝电解提取铝的阳极包括用主要包含氧化钴CoO的整体氧化物层覆盖的含钴金属外部部分。整体氧化物层可以在使用前由金属外部部分的钴表面氧化形成。

5. 发明申请

US20100294671A1 Aluminium collection in electrowinning cells 审中-公开
标题翻译：电解池中铝的收集
公开(公告)号：US20100294671A1
公开(公告)日：2010-11-25
申请号：US12308540
申请日：2007-06-20
申请人： Thinh T. Nguyen , Frank Schnyder , René Von Kaenel , Vittorio De Nora , Marcel Joubij
发明人： Thinh T. Nguyen , Frank Schnyder , René Von Kaenel , Vittorio De Nora , Marcel Joubij
IPC分类号： C25C3/08 , C25C3/20
CPC分类号： C25C3/08
摘要： A cell for the electrowinning of aluminium comprises an electrolysis chamber (20) in which alumina is electrolysed to produce aluminium (30) and a collection reservoir (40,40′) in which product aluminium is collected. The electrolysis chamber and the collection reservoir are in liquid communication so that aluminium produced in the electrolysis chamber can flow from the electrolysis chamber into the collection reservoir. The electrolysis chamber contains one or more metal-based anodes (15). Each anode has an active anodic surface (16) spaced above a facing cathodic surface (31) on which aluminium is produced. The cathodic surface is formed on a structural body (12) by a layer made of molten aluminium into which product aluminium is incorporated during operation. The anodic surface and the cathodic surface have a substantially constant operative position. The cell has means (60, 60′, 61, 61′, 62) for regulating the layer of molten aluminium so the layer forms a shallow or deep continuous cathodic pool (35) that extends continuously under the entire facing active anodic surface of at least one anode. The layer regulating means are arranged to maintain during operation the cathodic surface of the cathodic pool at a substantially constant position by periodic or continuous removal of molten aluminium from the aluminium pool to the collection reservoir at a rate corresponding substantially to the rate of production of the product aluminium that is incorporated into the aluminium pool.
摘要翻译：用于电解铝的电池包括电解室（20），其中氧化铝被电解以产生铝（30）和其中收集产品铝的收集容器（40,40'）。电解室和收集容器处于液体连通状态，使得在电解室中产生的铝可以从电解室流入收集容器。电解室含有一种或多种金属阳极（15）。每个阳极具有在其上产生铝的面对的阴极表面（31）上方间隔的活性阳极表面（16）。阴极表面通过由熔融铝制成的层在结构体（12）上形成，在操作期间将产品铝并入其中。阳极表面和阴极表面具有基本恒定的操作位置。电池具有用于调节熔融铝层的装置（60,60'，61,61'，62），使得该层形成浅或深连续的阴极池（35），其在整个面对的有源阳极表面下连续延伸至少一个阳极。层调节装置被布置成在操作期间将阴极池的阴极表面保持在基本上恒定的位置，通过将熔融铝从铝池周期性地或连续地移除到收集容器中，速率基本上对应于生产速率产品铝结合到铝池中。

6. 发明授权

US07811425B2 Non-carbon anodes with active coatings 有权
标题翻译：具有活性涂层的非碳阳极
公开(公告)号：US07811425B2
公开(公告)日：2010-10-12
申请号：US10591636
申请日：2005-03-18
申请人： Vittorio De Nora , Thinh T. Nguyen
发明人： Vittorio De Nora , Thinh T. Nguyen
IPC分类号： C25C3/06 , C25C3/12 , C25C7/02
CPC分类号： C25C3/18 , C25C3/08 , C25C3/12
摘要： An anode for electrowinning aluminium comprises an electrically conductive substrate that is covered with an applied electrochemically active coating comprising a layer that contains predominantly cobalt oxide CoO. The CoO layer can be connected to the substrate through an oxygen barrier layer, in particular containing copper, nickel, tungsten, molybdenum, tantalum and/or niobium.
摘要翻译：用于电解提取铝的阳极包括用包含主要包含钴氧化物CoO的层的施加的电化学活性涂层覆盖的导电基底。 CoO层可以通过氧阻隔层，特别是含有铜，镍，钨，钼，钽和/或铌而连接到衬底。

7. 发明申请

US20080041729A1 Aluminium Electrowinning With Enhanced Electrolyte Circulation 审中-公开
标题翻译：铝电解与增强电解质循环
公开(公告)号：US20080041729A1
公开(公告)日：2008-02-21
申请号：US11667142
申请日：2005-10-24
申请人： Vittorio De Nora , Thinh Nguyen
发明人： Vittorio De Nora , Thinh Nguyen
IPC分类号： C25C3/12
CPC分类号： C25C3/12 , C25C3/06
摘要： A method of operating an aluminium electrowinning cell that has one or more metal-based anodes (5). The anodes (5) comprise metal-based foraminate anode bodies (10) which are suspended by metal-based anode stems (20) in a molten electrolyte (50) and which are spaced above a cathode (30). The method comprises electrolysing alumina dissolved in the molten electrolyte (50) by passing current via the anode stems (20) and the anode bodies (10) through the electrolyte (50) to the facing cathode (30) whereby aluminium (60) is cathodically produced and gas is anodically evolved. The gas promotes an electrolyte circulation (51) through the foraminate anode bodies (10) which facilitates dissolution of alumina. Each anode (5) has a foraminate anode body (10) suspended by least three anode stems (20) that are spaced apart from one another and distributed around a foraminate stemless central part of the anode body (10). These stems extend from the anode body (10) to above the molten electrolyte (50), the electrolyte (50) flowing up through and above said foraminate central part of the anode body (10) to enhance dissolution of alumina fed thereabove.
摘要翻译：一种操作具有一个或多个基于金属的阳极（5）的铝电解冶金池的方法。阳极（5）包括由金属基阳极杆（20）悬浮在熔融电解质（50）中并且在阴极（30）上方间隔开的金属基有机胺阳极体（10）。该方法包括通过经由阳极杆（20）和阳极体（10）将电流通过电解质（50）通过电解质（50）而电解溶解在熔融电解质（50）中的氧化铝，由此铝（60）是阴极的产生和气体阳极进化。气体促进电解质循环（51）穿过有助于氧化铝溶解的阳极体（10）。每个阳极（5）具有由至少三个阳极杆（20）悬置的阳极体（10），所述阳极体彼此间隔开并分布在阳极体（10）的无胺无茎中心部分周围。这些杆从阳极体（10）延伸到熔融电解质（50）上方，电解质（50）向上流过阳极体（10）的所述中心部分的上方并且上方，以增强在其上方供给的氧化铝的溶解。

8. 发明申请

US20070193878A1 Non-carbon anodes with active coatings 失效
标题翻译：具有活性涂层的非碳阳极
公开(公告)号：US20070193878A1
公开(公告)日：2007-08-23
申请号：US10591635
申请日：2005-03-18
申请人： Thinh Nguyen , Vittorio De Nora
发明人： Thinh Nguyen , Vittorio De Nora
IPC分类号： C25C3/12
CPC分类号： C25C3/18 , C25C3/08 , C25C3/12
摘要： A cell for electrowinning aluminium from alumina, comprises: a metal-based anode having an electrochemically active outer part comprising a layer that contains predominantly cobalt oxide CoO; and a fluoride-containing molten electrolyte in which the active anode surface is immersed. The electrolyte is at a temperature below 950° C., in particular in the range from 910° to 940° C. The electrolyte consists of: 6.5 to 11 weight. % dissolved alumina; 35 to 44 weight % aluminium fluoride; 38 to 46 weight % sodium fluoride; 2 to 15 weight % potassium fluoride; 0 to 5 weight % calcium fluoride; and 0 to 5 weight % in total of one or more further constituents.
摘要翻译：一种用于从氧化铝中电解铝的电池，包括：金属基阳极，其具有电化学活性的外部部分，其包含主要含有氧化钴CoO的层; 以及其中浸渍有活性阳极表面的含氟化物的熔融电解质。电解质的温度低于950℃，特别是在910℃至940℃的范围内。电解质由6.5至11重量份组成。％溶解氧化铝; 35至44重量％氟化铝; 38至46重量％氟化钠; 2至15重量％氟化钾; 0-5重量％氟化钙; 和一种或多种其它成分的总计为0至5重量％。

9. 发明授权

US07255894B2 Non-carbon anodes for aluminium electrowinning and other oxidation resistant components with slurry-applied coatings 失效
标题翻译：用于电解铝的非碳阳极和其他具有浆料涂覆的抗氧化组分
公开(公告)号：US07255894B2
公开(公告)日：2007-08-14
申请号：US10506202
申请日：2003-04-15
申请人： Thinh T. Nguyen , Vittorio De Nora
发明人： Thinh T. Nguyen , Vittorio De Nora
IPC分类号： B05D3/00
CPC分类号： C25C3/08 , C25C3/12
摘要： A method of manufacturing a component, in particular an aluminium electrowinning anode, for use at elevated temperature in an oxidising and/or corrosive environment comprises: applying onto a metal-based substrate layers of a particle mixture containing iron oxide particles and particles of a reactant-oxide selected from titanium, yttrium, ytterbium and tantalum oxides; and heat treating the applied layers to consolidate by reactive sintering of the iron oxide particles and the reactant-oxide particles to turn the applied layer into a protective coating made of a substantially continuous reacted oxide matrix of one or more multiple oxides of iron and the metal from the reactant-oxide. The metal-based substrate comprises at its surface during the heat treatment an integral anchorage-oxide of at least one metal of the substrate. The anchorage-oxide anchors the multiple oxide matrix to the substrate by reacting with the iron oxide and/or the reactant-oxide to form an integral multiple bonding oxide of the metal of the integral anchorage-oxide and iron from the iron oxide and/or the metal of the reactant-oxide. The particle mixture can be applied in a colloidal and/or polymeric slurry.
摘要翻译：制造在氧化和/或腐蚀性环境中在高温下使用的组分，特别是铝电解阳极的方法包括：将含有氧化铁颗粒和反应物颗粒的颗粒混合物的金属基底层施加到金属基底层上选自钛，钇，镱和钽氧化物的氧化物; 并且对所施加的层进行热处理以通过氧化铁颗粒和反应物 - 氧化物颗粒的反应性烧结来固化，以将施加的层转变成由一种或多种多种氧化铁和金属的基本上连续的反应氧化物基质制成的保护涂层从反应物氧化物。基于金属的基底在其热处理期间的表面包括基底的至少一种金属的整体锚定氧化物。锚定氧化物通过与氧化铁和/或反应物氧化物反应将多个氧化物基质锚定到基底上，以形成来自氧化铁和/或氧化铁的整体锚定氧化物和铁的金属的整体多重结合氧化物反应物氧化物的金属。颗粒混合物可以以胶态和/或聚合物浆料的形式使用。

10. 发明授权

US06998032B2 Metal-based anodes for aluminium electrowinning cells 失效
公开(公告)号：US06998032B2
公开(公告)日：2006-02-14
申请号：US10161318
申请日：2002-06-03
申请人： Vittorio De Nora , Jean-Jacques Duruz
发明人： Vittorio De Nora , Jean-Jacques Duruz
IPC分类号： C25B11/04
CPC分类号： C25C3/12
摘要： An anode of a cell for the electrowinning of aluminium comprises a nickel-iron alloy substrate having a nickel metal rich outer portion with an electrolyte pervious integral nickel-iron oxide containing surface layer which adheres to the nickel metal rich outer portion of the nickel-iron alloy and which in use is electrochemically active for the evolution of oxygen. The oxide surface layer has a thickness such that, during use, the voltage drop therethrough is below the potential of dissolution of nickel-iron oxide. The nickel metal rich outer portion may contain cavities some or all of which, after oxidation, are partly or completely filled with iron oxides to form iron oxide containing inclusions.

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