公开(公告)号：US5364513A

公开(公告)日：1994-11-15

申请号：US898052

申请日：1992-06-12

Applicant: Jainagesh A. Sekhar ,  Vittorio de Nora

Inventor： Jainagesh A. Sekhar ,  Vittorio de Nora

IPC: C25C3/06 ,  C04B35/58 ,  C04B41/50 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  C23C20/08 ,  C25C3/08 ,  C25C3/12 ,  B05D1/36 ,  B05D5/12 ,  C25C3/16

CPC classification number: C04B41/507 ,  C04B41/5025 ,  C04B41/5062 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  C25C3/08 ,  C25C3/085 ,  C25C3/125

Abstract: A body of carbonaceous or other material for use in corrosive environments such as oxidizing media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating which improves the resistance of the body to oxidation or corrosion and which may also enhance the bodies electrical conductivity and/or its electrochemical activity. The protective coating is applied in one or more layers from a colloidal slurry containing reactant or non-reactant substances, or a mixture of reactant and non-reactant substances, in particular mixtures containing silicon carbide and molybdenum silicide or silicon carbide and silicon nitride, which when the body is heated to a sufficient elevated temperature reaction sinter as a result of micropyretic reaction and/or sinter without reaction to form the protective coating.

Abstract translation: 用于腐蚀性环境（例如氧化介质或高温气态或液体腐蚀剂，特别是熔融盐如冰晶石）的碳质或其他材料的主体涂覆有保护性表面涂层，其将身体的抗性提高到 氧化或腐蚀，并且还可以增强体的导电性和/或其电化学活性。 保护涂层从含有反应物或非反应物质的胶体浆料，或反应物和非反应物质的混合物，特别是含有碳化硅和硅化钼或碳化硅和氮化硅的混合物的混合物中施加在一层或多层中，其中 当由于微溶液反应和/或烧结而将体被加热到足够的高温反应烧结体而没有反应形成保护涂层时。

公开(公告)号：US5362366A

公开(公告)日：1994-11-08

申请号：US874752

申请日：1992-04-27

Applicant: Vittorio de Nora ,  Jainagesh A. Sekhar

Inventor： Vittorio de Nora ,  Jainagesh A. Sekhar

IPC: C25C3/08 ,  C25C3/06

CPC classification number: C25C3/08

Abstract: A novel anode-cathode arrangement for the electrowinning of aluminum from alumina dissolved in molten sales, consisting of an anode-cathode double-polar electrode assembly unit or a continuous double polar assembly in which the anode and cathode are bound together and their interelectrode gap is maintained substantially constant by connections made of materials of high electrical, chemical, and mechanical resistance. Novel, multi-double-polar cells for the electrowinning of aluminum contain two or more of such anode-cathode double-polar electrode assembly units. This arrangement permits the removal of reimmersion into any of the anode-cathode double-polar electrode assembly units during operation of the multi-double-polar cell whenever the anode and or the cathode or any part of the electrode unit needs reconditioning for efficient cell operation.

Abstract translation: 一种新型的阳极 - 阴极装置，用于从熔融销售中溶解氧化铝的电解冶金，由阳极 - 阴极双极电极组件单元或其中阳极和阴极结合在一起的连续双极组件及其电极间间隙组成 通过高电气，化学和机械阻力的材料制成的接头保持基本恒定。 用于铝的电解提取的新型多双极细胞包含两个或更多个这样的阳极 - 阴极双极电极组件单元。 这种布置允许在阳极和/或阴极或电极单元的任何部分需要重新调整以有效地进行电池操作的情况下，在多双极电池的操作期间去除任何阳极 - 阴极双极电极组件单元 。

公开(公告)号：US5332540A

公开(公告)日：1994-07-26

申请号：US653545

申请日：1991-02-11

Applicant: Jean-Jacques Duruz

Inventor： Jean-Jacques Duruz

IPC: C04B35/58 ,  C04B35/657 ,  C25C3/08 ,  C04B35/00

CPC classification number: C04B35/657 ,  Y10T428/25 ,  Y10T428/256

Abstract: A composite material comprises a body, e.g., a slab, of a fused refractory oxycompound (3) having a multiplicity of discrete inclusions such as lumps (1) of an aluminum-wettable RHM in its surface. These bodies are especially useful as aluminum-wettable but non-current carrying components of aluminum reduction cells.

Abstract translation: 复合材料包括具有多个离散夹杂物的熔融难熔氧化合物（3）的主体，例如板坯，其表面上具有铝可润湿的RHM的块体（1）。 这些物体特别用作铝还原电池的铝可润湿但非电流承载组分。

公开(公告)号：US5217583A

公开(公告)日：1993-06-08

申请号：US648165

申请日：1991-01-30

Applicant: Jainagesh A. Sekhar ,  Sarit B. Bhaduri

Inventor： Jainagesh A. Sekhar ,  Sarit B. Bhaduri

IPC: B22F3/23 ,  C04B35/00 ,  C04B35/65 ,  C22C1/05 ,  C22C29/00 ,  C25C3/08 ,  C25C3/12

CPC classification number: C25C3/12 ,  C04B35/651 ,  C22C1/058 ,  C25C3/08

Abstract: A dimensionally stable combustion synthesis product of a composition containing at least 20% by weight of a particulate combustible material; at least 15% by weight of a particulate filler material capable of providing desired mechanical and electrical properties; and up to 35% by weight of a particulate inorganic binder having a melting point lower than the combustion synthesis temperature. Electrodes suitable for electrochemical processing are a preferred product form, particularly electrodes for use in the electrowinning of aluminum from its oxide.

Abstract translation: 包含至少20重量％的颗粒状可燃材料的组合物的尺寸稳定的燃烧合成产物; 至少15重量％的能够提供期望的机械和电学性能的颗粒填料; 和高达35重量％的熔点低于燃烧合成温度的无机粘结剂颗粒。 适用于电化学处理的电极是优选的产品形式，特别是用于从其氧化物电解提取铝的电极。

公开(公告)号：US5203971A

公开(公告)日：1993-04-20

申请号：US788919

申请日：1991-11-07

Applicant: Vittorio de Nora ,  Jean-Jacques Duruz ,  Brian Cronin

Inventor： Vittorio de Nora ,  Jean-Jacques Duruz ,  Brian Cronin

IPC: C25C3/08

CPC classification number: C25C3/08

Abstract: A cell for the electrowinning of aluminum from molten salts has a cell bottom lining consisting partly of a refractory mass (4 ) and partly of carbon bodies (5). At least 30% and preferably 50% or more of the cell bottom area is occupied by the refractory mass (4). The carbon bodies (5) are level with the refractory mass (4) or are recessed therein.

Abstract translation: 用于从熔融盐中电解提取铝的电池具有部分由耐火材料（4）和部分碳体（5）组成的电池底部衬里。 电池底部面积的至少30％，优选为50％以上被耐火材料块（4）所占据。 碳体（5）与耐火材料块（4）平齐或凹入其中。

公开(公告)号：US5129998A

公开(公告)日：1992-07-14

申请号：US703312

申请日：1991-05-20

Applicant: Alton T. Tabereaux ,  Douglas V. Stewart ,  Nolan E. Richards

Inventor： Alton T. Tabereaux ,  Douglas V. Stewart ,  Nolan E. Richards

IPC: C25C3/08

CPC classification number: C25C3/08

Abstract: The density of various refractory hard metal articles are controlled so that articles made from the refractory hard metals are able to float on the surface of molten aluminum. Floating such articles on aluminum has been found to both stabilize and protect the surface of molten aluminum. Floating cathodes for use in aluminum reduction cells is a particular application for the floating refractory hard metals.

Abstract translation: 控制各种耐火硬金属制品的密度，使得由耐火硬金属制成的制品能够浮在熔融铝表面上。 已经发现在铝上浮动这样的物品既稳定又保护了熔融铝的表面。 用于铝还原电池的浮动阴极是浮选耐火硬金属的特殊应用。

公开(公告)号：US5128012A

公开(公告)日：1992-07-07

申请号：US675501

申请日：1991-03-26

Applicant: Arnt T. Olsen

Inventor： Arnt T. Olsen

IPC: C25C3/12 ,  C25C3/08 ,  C25C3/22

CPC classification number: C25C3/22 ,  C25C3/08

Abstract: The present invention relates to an arrangement for closing the top of a Soderberganode used in an electrolytic cell for production of aluminum. The anode comprises an anode casing and vertical contact bolts for holding and for conducting electric current to the anode. The top of the anode is closed by means of at least one central cover having openings for the contact bolts and at least one side cover which can be opened in order to charge anode paste to the anode.

Abstract translation: 本发明涉及一种封闭用于生产铝的电解池中使用的Soderberganode顶部的装置。 阳极包括用于保持和传导电流到阳极的阳极壳体和垂直接触螺栓。 阳极的顶部通过至少一个具有用于接触螺栓的开口的中心盖和至少一个可以打开的侧盖以将阳极浆料充电到阳极而封闭。

公开(公告)号：US5062929A

公开(公告)日：1991-11-05

申请号：US393966

申请日：1989-08-11

Applicant: Tom J. Hudson ,  John McIntyre ,  Pierre Tremblay ,  Claude Allaire ,  Bohdan Gnyra

Inventor： Tom J. Hudson ,  John McIntyre ,  Pierre Tremblay ,  Claude Allaire ,  Bohdan Gnyra

IPC: C25C3/08

CPC classification number: C25C3/085 ,  Y02P10/138

Abstract: The amount of electrically conductive material in the bottom floor lining of a conventional aluminum reduction cell is reduced by using a non-conductive lining material in its place. The non-conductive material separates the remaining electrically conductive regions from the sidewall linings of the cell and preferably confines the electrically conductive material to the "anode shadow" region of the cell floor. The non-conductive material preferably comprises a particulate alumina mixture made up of large shapes which firmly compact together and smaller particles which fill the remaining voids. Optionally, the mixture may be bonded together with amorphous alumina, in which case the mixture can also be used for cell wall linings. The linings can be used in reduction cells of conventional design and reduces undesirable magnetohydrodynamic effects as well as pollution hazards caused by conventional carbonaceous cell linings.

公开(公告)号：US5004524A

公开(公告)日：1991-04-02

申请号：US350478

申请日：1989-04-28

Applicant: Jean-Jacques Duruz

Inventor： Jean-Jacques Duruz

IPC: C04B35/58 ,  C04B35/657 ,  C25C3/08

CPC classification number: C04B35/657 ,  Y10T428/25 ,  Y10T428/256

Abstract: A composite material comprises a body, e.g., a slab, of a fused refractory oxycompound (3) having a multiplicity of discrete inclusions such as lumps (1) of an aluminum-wettable RHM in its surface. These bodies are especially useful as aluminum-wettable but non-current carrying components of aluminum reduction cells.

Abstract translation: 复合材料包括具有多个离散夹杂物的熔融难熔氧化合物（3）的主体，例如板坯，其表面上具有铝可润湿的RHM的块体（1）。 这些物体特别用作铝还原电池的铝可润湿但非电流承载组分。 “

公开(公告)号：US4919782A

公开(公告)日：1990-04-24

申请号：US312833

申请日：1989-02-21

Applicant: Douglas V. Stewart

Inventor： Douglas V. Stewart

IPC: C25C3/08

CPC classification number: C25C3/08

Abstract: An improved alumina reduction cell is described in which the carbonaceous cathode includes refractory hard metal shapes forming the true cathode surface and inert refractory protective sleeves for the refractory hard metal shapes. Reduced amounts of refractory hard metal material are employed through an improved refractory hard metal support system.

Abstract translation: 描述了一种改进的氧化铝还原电池，其中碳质阴极包括形成真正阴极表面的耐火硬金属形状和耐火硬金属形状的惰性耐火保护套。 通过改进的耐火硬金属支撑体系，采用减少量的耐火硬金属材料。