公开(公告)号：US5362366A

公开(公告)日：1994-11-08

申请号：US874752

申请日：1992-04-27

申请人： Vittorio de Nora ,  Jainagesh A. Sekhar

发明人： Vittorio de Nora ,  Jainagesh A. Sekhar

IPC分类号： C25C3/08 ,  C25C3/06

CPC分类号： C25C3/08

摘要： 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.

摘要翻译： 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：US5245115A

公开(公告)日：1993-09-14

申请号：US716104

申请日：1991-06-17

申请人： Eric Barrillon ,  Pierre Personnet ,  Jean-Claude Bontron

发明人： Eric Barrillon ,  Pierre Personnet ,  Jean-Claude Bontron

IPC分类号： A62D3/00 ,  A62D3/40 ,  A62D101/45 ,  A62D101/49 ,  B09B3/00

CPC分类号： A62D3/40 ,  B09B3/00 ,  C25C3/08 ,  A62D2101/45 ,  A62D2101/49 ,  Y10S588/90

摘要： The invention relates to a thermal shock treatment in a reactor of ground spent pot linings, constituted both by carbon-containing products and silico-aluminous products impregnated with fluorine-containing mineral compounds, mixed with a pulverulent mineral additive able to combine hot, with or without melting or fusion, with the fluorine-containing impregnating compounds in order to form new stable and insoluble compounds such as CaF.sub.2, binary, ternary or quaternary compounds of NaF, CaF.sub.2, SiO.sub.2, Al.sub.2 O.sub.3, CaSO.sub.4, Na.sub.2 SO.sub.4, of the nephelite, hauynite or similar type.

摘要翻译： 本发明涉及一种用于处理废弃废锅炉的反应器中的热冲击处理，其由含碳产物和浸渍有含氟矿物化合物的硅铝酸盐产品组成，与能够结合热的粉末矿物添加剂混合，或与 不熔融或融合，与含氟浸渍化合物形成新的稳定和不溶性的化合物，例如，上述钙钛矿，黑云母或黑云母的NaF，CaF 2，SiO 2，Al 2 O 3，CaSO 4，Na 2 SO 4的CaF 2，二元，三元或四元化合物 类似的类型

公开(公告)号：US5217583A

公开(公告)日：1993-06-08

申请号：US648165

申请日：1991-01-30

申请人： Jainagesh A. Sekhar ,  Sarit B. Bhaduri

发明人： Jainagesh A. Sekhar ,  Sarit B. Bhaduri

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

CPC分类号： C25C3/12 ,  C04B35/651 ,  C22C1/058 ,  C25C3/08

摘要： 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.

摘要翻译： 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

申请人： Vittorio de Nora ,  Jean-Jacques Duruz ,  Brian Cronin

发明人： Vittorio de Nora ,  Jean-Jacques Duruz ,  Brian Cronin

IPC分类号： C25C3/08

CPC分类号： C25C3/08

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： C25C3/08

CPC分类号： C25C3/08

摘要： 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.

摘要翻译： 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

申请人： Arnt T. Olsen

发明人： Arnt T. Olsen

IPC分类号： C25C3/12 ,  C25C3/08 ,  C25C3/22

CPC分类号： C25C3/22 ,  C25C3/08

摘要： 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.

摘要翻译： 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：US4919782A

公开(公告)日：1990-04-24

申请号：US312833

申请日：1989-02-21

申请人： Douglas V. Stewart

发明人： Douglas V. Stewart

IPC分类号： C25C3/08

CPC分类号： C25C3/08

摘要： 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.

摘要翻译： 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。

公开(公告)号：US4897170A

公开(公告)日：1990-01-30

申请号：US252122

申请日：1988-10-03

申请人： Pitchaiya Chandramouli

发明人： Pitchaiya Chandramouli

IPC分类号： C08L61/10 ,  C04B35/532 ,  C08L61/04 ,  C08L61/06 ,  C25B11/12 ,  C25C1/00 ,  C25C3/08 ,  C25C3/12 ,  C25C7/02 ,  H05B7/09

CPC分类号： C25C3/08 ,  C04B35/532 ,  C25C3/125 ,  C25C7/025 ,  H05B7/09

摘要： The invention is a novel Soderberg electrode paste composition. The composition is a mixture comprising carbonaceous aggregate, novolac resin binder, plasticizer and optionally hexamethylenetetramine. The novolac resin of the binder has a melting point of at least 100.degree. C. and a free phenol content of not more than 4% by weight based on the weight of novolac resin solids. The residual coking value of the composition of the invention is at least as great as the minimum preferred coking value of traditional Soderberg pastes which are based on coal tar pitch binder.

摘要翻译： 本发明是一种新型的Soderberg电极糊组合物。 该组合物是包含碳质聚集体，酚醛清漆树脂粘合剂，增塑剂和任选的六亚甲基四胺的混合物。 基于酚醛清漆树脂固体的重量，粘合剂的酚醛清漆树脂的熔点至少为100℃，游离酚含量不超过4重量％。 本发明组合物的残余焦化值至少与基于煤焦油沥青粘合剂的传统Soderberg糊料的最小优选焦化值一样大。

公开(公告)号：US4816122A

公开(公告)日：1989-03-28

申请号：US775640

申请日：1985-09-13

申请人： Gordon Lever

发明人： Gordon Lever

IPC分类号： B09B3/00 ,  C01B7/19 ,  C01D3/02 ,  C01F7/50 ,  B01D13/02 ,  C01B31/02

CPC分类号： C01D3/02 ,  C01B7/191 ,  C01F7/50 ,  C25C3/08

摘要： Fluoride-containing wastes, arising in the aluminium industry, particularly spent cell linings from reduction cells, are digested with caustic soda for conversion of sodium cryolite to NaF.By use of very strong caustic soda NaF may be left in the solid residues after removal of the residual liquor and recovered from such residues by water leaching.As an alternative weaker caustic soda may be used in the digestion stage and subsequently be crystallised out from the residual liquor, after separation from the solid residues, by evaporating and/or cooling the liquor. The precipitated NaF is then conventiently redissolved in water.The NaF solution prepared by either route is then preferably subjected to electrodialysis to recover a solution of HF from it. Such HF is conveniently converted to AlF.sub.3 by reaction with alumina.

摘要翻译： 在铝工业中产生的含氟废物特别是从还原电池中消耗的细胞衬里用苛性钠消化，将钠冰晶石转化为NaF。 通过使用非常强的苛性钠，NaF可以在除去残余液后留在固体残余物中，并通过水浸从这些残留物中回收。 作为替代，可以在消化阶段使用较弱的苛性钠，然后通过蒸发和/或冷却液体从残留液中分离出来，随后从固体残余物中分离出结晶出来。 沉淀的NaF然后经常地再溶解在水中。 然后优选通过任一途径制备的NaF溶液进行电渗析以从其中回收HF溶液。 这样的HF通过与氧化铝反应便利地转化为AlF 3。

公开(公告)号：US4804642A

公开(公告)日：1989-02-14

申请号：US935793

申请日：1986-11-28

申请人： Siba P. Ray

发明人： Siba P. Ray

IPC分类号： C04B35/58 ,  C04B35/65 ,  C25C3/08 ,  C25C7/02 ,  C04B35/10 ,  C04B35/56

CPC分类号： C04B35/58071 ,  C04B35/01 ,  C04B35/5611 ,  C04B35/5622 ,  C04B35/58014 ,  C04B35/58028 ,  C04B35/5805 ,  C04B35/58078 ,  C04B35/581 ,  C04B35/65 ,  C25C3/08 ,  C25C7/02

摘要： Disclosed is an aluminum borate base ceramic composite comprised of a metal compound and a composition having the formula Al.sub.x B.sub.y O.sub.z.

摘要翻译： 公开了一种由金属化合物和具有式Al x B y O z的组合物组成的硼酸铝基陶瓷复合材料。