公开(公告)号：WO2007105125A3

公开(公告)日：2008-05-08

申请号：PCT/IB2007050611

申请日：2007-02-26

Applicant: MOLTECH INVENT SA ,  NGUYEN THINH T ,  VON KAENEL RENE ,  DE NORA VITTORIO

Inventor： NGUYEN THINH T ,  VON KAENEL RENE ,  DE NORA VITTORIO

IPC: C25C3/08 ,  C25C3/12

CPC classification number: C25C3/08 ,  C25C3/12

Abstract: 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.

Abstract translation: 用于电解冶金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非出现的活性阳极体（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的外壳（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，以防止外壳的机械破坏和外壳的倒塌 空腔。

公开(公告)号：WO2007105124A3

公开(公告)日：2008-04-17

申请号：PCT/IB2007050610

申请日：2007-02-26

Applicant: MOLTECH INVENT SA ,  DE NORA VITTORIO ,  VON KAENEL RENE ,  NGUYEN THINH T

Inventor： DE NORA VITTORIO ,  VON KAENEL RENE ,  NGUYEN THINH T

IPC: C25C3/08

CPC classification number: C25C3/08

Abstract: A drained-cathode cell (10) for the electrowinning of aluminium (25) from alumina dissolved in a fluoride- containing molten electrolyte (30) has: a cell bottom (11) and cell sidewalls (12', 15, 16) forming a cavity for containing the electrolyte (30) up to an operative electrolyte level (31); and aluminium-wettable drained cathode surfaces (13) on which during use aluminium is produced and from which aluminium is drained. The sidewalls have one or more sections (12') extending from the cell bottom to about the electrolyte level or thereabove. The sidewall sections are thermally insulated so as to inhibit formation of a ledge of frozen electrolyte thereon and inhibit heat losses therethrough. An upper part (13') of at least one sidewall section has an aluminium-wettable drained cathode surface on which during use aluminium is produced and drained along and over the entire sidewall section exposed to molten electrolyte from about the operative electrolyte level down to the cell bottom. The product aluminium draining along and over the sidewall section inhibits exposure to molten electrolyte of this sidewall section between the electrolyte level and the cell bottom.

Abstract translation: 用于从溶解在含氟化物的熔融电解质（30）中的氧化铝电解提取铝（25）的排水阴极单元（10）具有：单元底部（11）和单元侧壁（12'，15,16），形成 用于将电解质（30）容纳至操作电解液层（31）的空腔; 和铝可润湿的排出的阴极表面（13），在其中生产铝并从其中排出铝。 侧壁具有从电池底部延伸到约电解液层或其上方的一个或多个部分（12'）。 侧壁部分是绝热的，以便抑制其上的冷冻电解质的壁架的形成并且抑制通过其中的热损失。 至少一个侧壁部分的上部（13'）具有铝可润湿的排出的阴极表面，在使用铝的过程中，从暴露于熔融电解质的整个侧壁部分的整个侧面产生和排出铝，并从该操作电解液层向下流到 细胞底部。 沿着侧壁部分排出的产品铝抑制暴露于电解液层和电池底部之间的该侧壁部分的熔融电解质。

公开(公告)号：WO2007148297A3

公开(公告)日：2008-03-06

申请号：PCT/IB2007052385

申请日：2007-06-20

Applicant: MOLTECH INVENT SA ,  NGUYEN THINH T ,  SCHNYDER FRANK ,  VON KAENEL RENE ,  DE NORA VITTORIO

Inventor： NGUYEN THINH T ,  SCHNYDER FRANK ,  VON KAENEL RENE ,  DE NORA VITTORIO

IPC: C25C3/08

CPC classification number: C25C3/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2007148297A2

公开(公告)日：2007-12-27

申请号：PCT/IB2007/052385

申请日：2007-06-20

Applicant: MOLTECH INVENT S.A. ,  NGUYEN, Thinh T. ,  SCHNYDER, Frank ,  VON KAENEL, René ,  DE NORA, Vittorio

Inventor： NGUYEN, Thinh T. ,  SCHNYDER, Frank ,  VON KAENEL, René ,  DE NORA, Vittorio

CPC classification number: C25C3/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2006048790A3

公开(公告)日：2007-02-08

申请号：PCT/IB2005053466

申请日：2005-10-24

Applicant: MOLTECH INVENT SA ,  DE NORA VITTORIO ,  NGUYEN THINH T

Inventor： DE NORA VITTORIO ,  NGUYEN THINH T

IPC: C25C3/12

CPC classification number: C25C3/12

Abstract: 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.

Abstract translation: 一种操作具有一种或多种金属阳极（5）的铝电解冶金电池的方法。 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）来电解溶解在熔融电解质（50）中的氧化铝，由此铝（60）是阴极的 产生的和气体是阳极进化的。 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，并增加其上方氧化铝的溶解。

公开(公告)号：WO2006095307A2

公开(公告)日：2006-09-14

申请号：PCT/IB2006/050697

申请日：2006-03-06

Applicant: MOLTECH INVENT S.A. ,  NGUYEN, Thinh, T. ,  DE NORA, Vittorio

Inventor： NGUYEN, Thinh, T. ,  DE NORA, Vittorio

IPC: C23C18/02

CPC classification number: C04B41/88 ,  C04B41/009 ,  C04B41/5089 ,  C04B41/5155 ,  C04B41/52 ,  C04B41/90 ,  C04B2111/00879 ,  C23C18/02 ,  C25C3/08 ,  C04B41/4535 ,  C04B41/455 ,  C04B41/5031 ,  C04B41/5096 ,  C04B41/5041 ,  C04B41/507 ,  C04B41/5076 ,  C04B35/52

Abstract: A slurry comprises suspended aluminium particles in a colloid having dispersed colloidal particles of a metal oxide such as a hydroxide. The metal oxide is reducible by metallic aluminium. The slurry has such a basic pH that dissolution of the aluminium particles in the slurry is inhibited so that when the slurry is subjected to a heat treatment, the undissolved aluminium particles are reactable with the colloidal particles to form an aluminium-based mixture resistant to chemical attack made of aluminium oxide, metal aluminium and the metal of the colloidal particles. The slurry can be used to form an aluminium-based protective coating on a component, in particular of an aluminium electrowinning cell or an apparatus for treating molten aluminium.

Abstract translation: 浆料包含具有分散的金属氧化物如氢氧化物的胶体颗粒的胶体中的悬浮的铝颗粒。 金属氧化物可以被金属铝还原。 该浆料具有这样的碱性pH，使得铝粒子在浆料中的溶解被抑制，使得当浆料经受热处理时，未溶解的铝颗粒可与胶体颗粒反应形成耐化学品的铝基混合物 氧化铝，金属铝和胶体颗粒金属的攻击。 该浆料可用于在组分上，特别是铝电解冶金池或用于处理熔融铝的设备中形成铝基保护涂层。

公开(公告)号：WO2004092449A3

公开(公告)日：2005-05-06

申请号：PCT/IB2004050457

申请日：2004-04-15

Applicant: MOLTECH INVENT SA ,  NGUYEN THINH T ,  DE NORA VITTORIO

Inventor： NGUYEN THINH T ,  DE NORA VITTORIO

IPC: C04B35/52 ,  C04B41/52 ,  C04B41/90 ,  C25C3/08

CPC classification number: C25C3/125 ,  C04B35/52 ,  C04B35/522 ,  C04B41/009 ,  C04B41/52 ,  C04B41/90 ,  C04B2111/00879 ,  C04B2235/3217 ,  C04B2235/3262 ,  C04B2235/327 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/402 ,  C04B2235/404 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/48 ,  C04B2235/75 ,  C04B2235/80 ,  C04B2235/9676 ,  C25C3/08 ,  C04B41/0072 ,  C04B41/4535 ,  C04B41/5009 ,  C04B41/5072 ,  C04B41/522 ,  C04B41/4523 ,  C04B41/5155

Abstract: A carbon body has an aluminium-wettable outer part that is made of a carbon-rich mixture containing aluminium-reactable metal-based particles and carbon. The metal-based particles are made of metal oxide particles and/or partly oxidised metal particles. The metal of the metal­based particles is selected from iron, copper, cobalt, nickel, zinc and manganese. The carbon body can be used in an aluminium electrowinning cell, e.g. as a cathode, or in an apparatus for treating molten aluminium and is wetted by molten aluminium during use.

Abstract translation: 碳体具有铝可湿性外部部分，其由含铝可反应的金属基颗粒和碳的富含碳的混合物制成。 金属基颗粒由金属氧化物颗粒和/或部分氧化的金属颗粒制成。 金属基质颗粒的金属选自铁，铜，钴，镍，锌和锰。 碳体可以用于铝电解池中，例如， 或用于处理熔融铝的设备，并在使用过程中被熔融铝润湿。

公开(公告)号：WO2004044268A2

公开(公告)日：2004-05-27

申请号：PCT/IB2003/005292

申请日：2003-11-14

Applicant: MOLTECH INVENT S.A. ,  APPOURCHAUX, Eric ,  NGUYEN, Thinh, T. ,  DE NORA, Vittorio

Inventor： APPOURCHAUX, Eric ,  NGUYEN, Thinh, T. ,  DE NORA, Vittorio

IPC: C25C

CPC classification number: C25C3/12 ,  C04B35/01 ,  C04B35/6262 ,  C04B35/63 ,  C04B35/634 ,  C04B2235/3201 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3272 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/386 ,  C04B2235/40 ,  C04B2235/404 ,  C04B2235/405 ,  C04B2235/407 ,  C04B2235/5445 ,  C04B2235/5472 ,  C04B2235/6584 ,  C04B2235/6585 ,  C04B2235/9676 ,  C25C3/08

Abstract: A method of forming a hematite-containing material for use in a high temperature oxidising and/or corrosive environment, comprises sintering by heat treatment a particle mixture comprising predominantly sinterable hematite particles (10) and substantially non-sinterable hematite particles (10a), with a weight ratio sinterable hematite/substantially non-sinterable hematite in the range of 0.2 to 3. The sinterable hematite particles (10) are sintered together and the substantially non-sinterable hematite particles (10a) inhibit aggregation of voids (30) produced by the sintering. The particle mixture may comprise additives such as titanium, zinc, copper and/or other metals or oxides thereof to improve the electrical properties of the hematite-containing material, as well as non-sinterable non-oxide ceramic particles, iron metal particles and/or ferrous oxide particles or other additives such as sodium silicate. The material can be used for the manufacture of aluminium electrowinning cell components, in particular anodes.

Abstract translation: 一种形成用于高温氧化和/或腐蚀环境的含赤铁矿的材料的方法包括通过热处理将包含主要是可烧结的赤铁矿颗粒（10）和基本上不可烧结的赤铁矿颗粒（10a）的颗粒混合物与 可烧结的赤铁矿/基本上不可烧结的赤铁矿的重量比在0.2至3的范围内。可烧结的赤铁矿颗粒（10）被烧结在一起，并且基本上不可烧结的赤铁矿颗粒（10a）抑制由 烧结。 颗粒混合物可以包括诸如钛，锌，铜和/或其它金属或其氧化物的添加剂，以改善含赤铁矿的材料的电性能，以及不可烧结的非氧化物陶瓷颗粒，铁金属颗粒和/ 或氧化亚铁颗粒或其它添加剂如硅酸钠。 该材料可用于制造铝电解池组件，特别是阳极。

公开(公告)号：WO2004025751A2

公开(公告)日：2004-03-25

申请号：PCT/IB2002/003759

申请日：2002-09-11

Applicant: MOLTECH INVENT S.A. ,  NGUYEN, Thinh, T. ,  DE NORA, Vittorio

Inventor： NGUYEN, Thinh, T. ,  DE NORA, Vittorio

IPC: H01M

CPC classification number: C25C7/005 ,  C25C3/08 ,  C25C3/12 ,  C25C7/025

Abstract: A method of forming a dense and crack-free hematite- containing protective layer on a metal-based substrate for use in a high temperature oxidising and/or corrosive environment comprises applying onto the substrate a particle mixture consisting of: 60 to 95 weight%, in particular 70 to 85 weight%, of hematite particles; 5 to 25 weight%, in particular 8 to 20 weight%, of nitride and/or carbide particles, such as boron nitride, aluminium nitride or zirconium carbide particles; and 0 to 15 weight%, in particular 5 to 15 weight%, of particles of one or more further constituents that consist of at least one metal or metal oxide or a heat-convertible precursor thereof. The hematite particles are then sintered by heat treating the particle mixture to form the protective layer that is made of a microporous sintered hematite matrix in which the nitride and/or carbide particles are embedded and which contains, when present, said one or more further constituents. The mechanical, electrical and electrochemical properties of the protective layer can be improved by using an oxide of titanium, zinc, zirconium or copper. Typically, the protected substrate can be used in a cell for the electrowinning of a metal such as aluminium.

Abstract translation: 在用于高温氧化和/或腐蚀性环境的金属基底上形成致密且无裂纹的含赤铁矿保护层的方法包括将由以下组成的颗粒混合物施加到基底上：60至95重量％ 特别是70〜85重量％的赤铁矿颗粒; 5至25重量％，特别是8至20重量％的氮化物和/或碳化物颗粒，例如氮化硼，氮化铝或碳化锆颗粒; 和0至15重量％，特别是5至15重量％的由至少一种金属或金属氧化物或其可热转化的前体组成的一种或多种另外的组分的颗粒。 然后通过热处理颗粒混合物来形成赤铁矿颗粒以形成由微孔烧结的赤铁矿基质制成的保护层，其中氮化物和/或碳化物颗粒被嵌入，并且当存在所述一种或多种其它成分时 。 可以通过使用钛，锌，锆或铜的氧化物来改善保护层的机械，电学和电化学性质。 通常，受保护的基底可用于电解池中金属如铝的电解提取。

公开(公告)号：WO2003087435A3

公开(公告)日：2003-10-23

申请号：PCT/IB2003/001479

申请日：2003-04-15

Applicant: MOLTECH INVENT S.A. ,  NGUYEN, Thinh, T. ,  DE NORA, Vittorio

Inventor： NGUYEN, Thinh, T. ,  DE NORA, Vittorio

IPC: C25C3/12

Abstract: 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.