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    • 22. 发明申请
    • Electrolytic cell with improved feed device
    • 电解槽具有改进的进料装置
    • US20060124471A1
    • 2006-06-15
    • US10535809
    • 2003-12-03
    • Thinh NguyenVittorio De Nora
    • Thinh NguyenVittorio De Nora
    • C25C3/14
    • C25C3/14
    • A cell for the electrowinning of a metal (70) from a compound thereof dissolved in a molten electrolyte comprises: a thermally insulated cell trough (10,20) and a thermally insulated cell cover (30) which are arranged to contain an electrolyte (40) and maintain it in a substantially crustless molten state; and a feeder (50) for feeding a particulate (60) of the metal compound to the molten electrolyte (40). The feeder (50) comprises a feeding tube (51) extending into the cell trough (10,20) and has a tubular end portion (52) which is located between the molten electrolyte (40) and the insulating cell cover (30) and which has a substantially horizontal axial direction. The feeder (50) is arranged to feed the particulate (60) into the feeding tube (51), along the feeding tube (51) and through an opening (53) in the tubular end portion (52) from where it is delivered over the molten electrolyte (40). The opening (53) is located at an end of the tubular end portion (52) and is arranged to deliver the particulate (60) from the feeding tube (51) substantially along the axial direction of the tubular end portion (52). The end opening (53) can be coaxial with the tubular end portion (52) or off-axis.
    • 用于从溶解在熔融电解液中的化合物电解金属(70)的电池包括:绝热电池槽(10,20)和绝热电池盖(30),其被设置成容纳电解质(40 )并将其保持在基本上不含熔融状态; 以及用于将金属化合物的颗粒(60)进料到熔融电解质(40)的进料器(50)。 进料器(50)包括延伸进入槽槽(10,20)的进料管(51),并且具有位于熔融电解质(40)和绝缘电池盖(30)之间的管状端部(52)和 其具有基本上水平的轴向方向。 进料器(50)被布置成沿着进料管(51)并通过管状端部(52)中的通过其被输送的管(52)的开口(53)将颗粒(60)进料到进料管(51) 熔融电解质(40)。 开口53位于管状端部52的端部,并且布置成基本上沿着管状端部52的轴向方向从供给管51输送颗粒60。 端部开口(53)可以与管状端部(52)或离轴同轴。
    • 23. 发明申请
    • Protection of metal-based substrates with hematite-containing coatings
    • 用含赤铁矿的涂层保护金属基底料
    • US20060003084A1
    • 2006-01-05
    • US10526914
    • 2003-08-14
    • Thinh Nguyen
    • Thinh Nguyen
    • B05D5/12
    • C23C8/02C23C8/10C23C10/30C23C22/70C23C24/08C23C26/00C25C3/06C25C3/08C25C3/12
    • 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: (I) applying onto the substrate a mass of particles comprising hematite (Fe2O3) and: (a) iron metal (Fe) with a weight ratio Fe/Fe2O3 of at least 0.3 and preferably below 2, in particular in the range from 0.8 to 1.4; and/or (b) ferrous oxide (FeO) with a weight ratio FeO/Fe2O3 of at least 0.35 and preferably below 2.5, in particular in the range from 0.9 to 1.7; and (II) consolidating the applied mass of particles to form the hematite-containing protective layer by heat treating the mass of particles to: 1) sinter the hematite to form a porous sintered hematite matrix; and 2) oxidise into hematite (Fe2O3) the iron metal (Fe) and the ferrous oxide (FeO) to fill the sintered hematite matrix. The mechanical, electrical and electrochemical properties of the protective layer can be improved by using additives, such as oxides of titanium, zirconium and/or copper. Typically the protected substrate can be used in a cell for the electrowinning of a metal such as aluminium.
    • 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:(I)在基底上施加大量的包含赤铁矿(Fe (a)重量比Fe / Fe 2 O 3 3的铁(金)(Fe)2和/ SUB>至少0.3,优选低于2,特别是在0.8至1.4的范围内; 和/或(b)重量比FeO / Fe 2 O 3 N 3的氧化亚铁(FeO)为至少0.35,优选低于2.5,特别是在 0.9至1.7; (II)通过对颗粒物质进行热处理,使颗粒的施加质量固结形成含赤铁矿的保护层:1)烧结赤铁矿以形成多孔烧结的赤铁矿基体; 和2)将铁金属(Fe)和氧化亚铁(FeO)氧化成赤铁矿(Fe 2 O 3 O 3)以填充烧结的赤铁矿基质。 可以通过使用钛,锆和/或铜的氧化物等添加剂来改善保护层的机械,电学和电化学性能。 通常,受保护的基底可用于电解池中用于金属如铝的电解提取。
    • 24. 发明申请
    • Battery charger with retention arms
    • 带保持臂的电池充电器
    • US20060001400A1
    • 2006-01-05
    • US10880631
    • 2004-06-30
    • Karl ZedellThinh NguyenMark Taraboulos
    • Karl ZedellThinh NguyenMark Taraboulos
    • H02J7/00
    • H02J7/0045
    • A charger for rechargeable batteries has a pair of snap arms for retaining a battery within the pocket of the charger. When the battery is inserted into the charger pocket, the snap arms provide a downward force against the battery, thereby ensuring a sound electrical connection between the battery and electrical contacts disposed within the pocket. In one embodiment, the charger pocket includes a pair of channel apertures in which the snap arms are placed. Upon battery insertion, a flex member of the snap arm deflects, thereby allowing a mating feature of the battery to pass. When the battery is fully inserted, a coupling member of the snap arm exerts a force against the battery, thereby pushing the battery towards the bottom of the pocket.
    • 用于充电电池的充电器具有用于将电池保持在充电器的口袋内的一对卡扣臂。 当电池插入充电器袋中时,卡扣臂向电池提供向下的力,从而确保电池和设置在口袋内的电触点之间的声音电连接。 在一个实施例中,充电器袋包括一对通道孔,其中放置卡扣臂。 在电池插入时,卡扣臂的挠曲构件偏转,从而允许电池的配合特征通过。 当电池完全插入时,卡合臂的联接构件对电池施加力,从而将电池推向口袋的底部。
    • 26. 发明申请
    • Aluminium production cells with iron-based metal alloy anodes
    • 铝生产电池与铁基金属合金阳极
    • US20050000823A1
    • 2005-01-06
    • US10485035
    • 2002-08-02
    • Thinh NguyenJean-Jacques DuruzVittorio De Nora
    • Thinh NguyenJean-Jacques DuruzVittorio De Nora
    • C25C3/06C25C3/12
    • C25C3/06C25C3/12
    • An iron-based metal anode for the electrowinning of aluminium by the electrolysis of alumina in a molten fluoride electrolyte has an electrochemically active integral outside oxide layer on an iron-based alloy that consists of 75 to 90 weight % iron; 0.5 to 5 weight % in total of at least one rare earth metal, in particular yttrium; 1 to 10 weight % aluminium; 0 to 10 weight % copper; 0 to 10 weight % nickel; and 0.5 to 5 weight % of other elements. The total amount of aluminium, copper and nickel is in the range from 5 to 20 weight %; and the total amount of rare earth metal(s), aluminium and copper is also in the range from 5 to 20 weight %. The electrochemically active surface layer is predominantly of iron oxide that slowly dissolves into the electrolyte during operation and is maintained by progressive slow oxidation of iron at the interface of the bulk metal of the alloy with the oxide layer. This progressive slow oxidation of iron corresponds to the dissolution of iron into the electrolyte which remains at or below saturation level at the operating temperature, the operating temperature being maintained sufficiently low to limit the contamination of the product aluminium to an acceptable level, and the electrolyte being circulated to maintain a sufficient concentration of alumina in the anode cathode gap.
    • 用于通过在熔融氟化物电解质中电解氧化铝来电解提取铝的铁基金属阳极在铁基合金上具有由75至90重量%的铁组成的电化学活性的整体外部氧化物层; 总共为0.5〜5重量%的至少一种稀土金属,特别是钇; 1至10重量%的铝; 0〜10重量%的铜; 0至10重量%的镍; 和0.5〜5重量%的其他元素。 铝,铜和镍的总量在5至20重量%的范围内; 稀土金属,铝和铜的总量也在5〜20重量%的范围内。 电化学活性表面层主要是氧化铁,其在操作期间缓慢地溶解到电解质中,并且通过在合金的本体金属与氧化物层的界面处的铁的逐渐缓慢氧化来保持。 铁的这种逐渐缓慢氧化对应于铁在电解质中的溶解,其在操作温度下保持在或低于饱和水平,操作温度保持足够低以将产品铝的污染限制在可接受的水平,并且电解质 循环以在阳极阴极间隙中保持足够的氧化铝浓度。
    • 29. 发明申请
    • Aluminium Electrowinning With Enhanced Electrolyte Circulation
    • 铝电解与增强电解质循环
    • US20080041729A1
    • 2008-02-21
    • US11667142
    • 2005-10-24
    • Vittorio De NoraThinh Nguyen
    • Vittorio De NoraThinh Nguyen
    • C25C3/12
    • C25C3/12C25C3/06
    • 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.
    • 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。
    • 30. 发明申请
    • Non-carbon anodes with active coatings
    • 具有活性涂层的非碳阳极
    • US20070193878A1
    • 2007-08-23
    • US10591635
    • 2005-03-18
    • Thinh NguyenVittorio De Nora
    • Thinh NguyenVittorio De Nora
    • C25C3/12
    • C25C3/18C25C3/08C25C3/12
    • 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.
    • 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%。