公开(公告)号：US20240287695A1

公开(公告)日：2024-08-29

申请号：US18657047

申请日：2024-05-07

Applicant: ALCOA USA CORP.

Inventor： Benjamin D. Mosser ,  Xinghua Liu

IPC: C25C7/02 ,  C25C3/08 ,  C25C3/12

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

Abstract: The application is directed to products and methods related to an aluminum purification cell with a non-carbonaceous substrate with a directing feature. The directing feature can be configured to direct a wettable material in a predetermined direction. The non-carbonaceous substrate can be at least partially covered with solid aluminum metal. The wettable material can be aluminum metal.

公开(公告)号：US11697594B2

公开(公告)日：2023-07-11

申请号：US17764561

申请日：2021-01-16

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Yanqing Lai ,  Zhongliang Tian ,  Kai Yang ,  Yifan Li ,  Peiyu Gong ,  Bo Hong ,  Jie Li

IPC: C01B32/205 ,  C25C3/08 ,  B09B3/70 ,  B09B3/40 ,  B09B101/15

CPC classification number: C01B32/205 ,  B09B3/40 ,  B09B3/70 ,  C25C3/08 ,  B09B2101/15

Abstract: A method for recycling spent carbon cathode of aluminum electrolysis includes the following steps: (1) crushing and sieving spent carbon cathode, to obtain carbon particles; (2) mixing the carbon particles with a sulfuric acid solution, to obtain a slurry A, and then performing pressure leaching, to obtain a slurry B; (3) evaporating and concentrating the slurry B until a mass percentage of water is lower than 8%, to obtain a slurry C; (4) adding concentrated sulfuric acid to the slurry C to obtain a slurry D, then roasting the slurry D at 150-300° C. for 0.5-10 h, and then roasting at 300-600° C. for 0.5-8 h, to obtain the roasted carbon; and calcining the roasted carbon at a high temperature, to obtain the purified carbon, or mixing the roasted carbon with a leaching agent, and performing leaching, filtering, and washing, to obtain the purified carbon.

公开(公告)号：US10072346B2

公开(公告)日：2018-09-11

申请号：US14914196

申请日：2015-05-22

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Takahiro Yamabe ,  Yuichi Ono ,  Koji Akiyama ,  Motoshige Sato ,  Bunji Akimoto

IPC: C25C3/04 ,  C25C3/08 ,  C25C3/34 ,  C25B1/00 ,  C25B9/06 ,  C25C3/26 ,  C25C3/28 ,  C25C7/00

CPC classification number: C25C3/04 ,  C25B1/006 ,  C25B9/063 ,  C25C3/08 ,  C25C3/26 ,  C25C3/28 ,  C25C3/34 ,  C25C7/005

Abstract: Provided is a method for producing metal by molten salt electrolysis, by which the metal can be efficiently produced.A method for producing metal by using an apparatus for molten salt electrolysis having an electrolytic cell and an electrode pair, wherein the molten salt electrolysis in the electrolytic cell and heating of the molten salt by a Joule heat generation between a pair of electrodes for electrolysis are simultaneously performed; and wherein the apparatus for molten salt electrolysis has at least two sets of electrode pair, and at least one set of the electrode pairs is electrically opened.

公开(公告)号：US09994963B2

公开(公告)日：2018-06-12

申请号：US13932773

申请日：2013-07-01

Applicant: Mid-Mountain Materials, Inc.

Inventor： Tony Carroll ,  Yuri Nikolaevich Popov

IPC: C25C7/00 ,  C25C3/08

CPC classification number: C25C7/00 ,  C25C3/08 ,  C25C3/085

Abstract: Sealing devices are provided as configured for use with cathode devices of an electrolytic cell for production of aluminum. In particular, the seals are specifically configured to provide an outlet seal for the cathode bars. The sealing devices are made of a material that is elastic, gas-proof, and heat-proof, and can create a hermetic seal around the cathode bar in such a way as to be able to move synchronously or asynchronously with the movement of the cathode bar as it undergoes thermally induced movement during aluminum production.

公开(公告)号：US20170283968A1

公开(公告)日：2017-10-05

申请号：US15474934

申请日：2017-03-30

Applicant: Alcoa USA Corp.

Inventor： Benjamin D. Mosser ,  Lance M. Sworts

IPC: C25C3/08 ,  C25C3/12 ,  C25C7/00

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

Abstract: In one embodiment, the disclosed subject matter relates to an electrolytic cell that has: a cell reservoir; a cathode support retained on a bottom of the cell reservoir, wherein the cathode support contacts at least one of: a metal pad and a molten electrolyte bath within the cell reservoir, wherein the cathode support includes: a body having a support bottom, which is configured to be in communication with the bottom of the electrolysis cell; and a support top, opposite the support bottom, having a cathode attachment area configured to retain a at least one cathode plate therein.

公开(公告)号：US09771659B2

公开(公告)日：2017-09-26

申请号：US14206300

申请日：2014-03-12

Applicant: ALCOA INC.

Inventor： Xinghua Liu ,  Douglas A. Weirauch, Jr. ,  Frankie E. Phelps ,  Joseph M. Dynys ,  Jonell Kerkhoff ,  Robert A. DiMilia

IPC: C25C3/08 ,  C25C3/14 ,  C25C3/20

CPC classification number: C25C3/08 ,  C25C3/085 ,  C25C3/14 ,  C25C3/20

Abstract: A system is provided including an electrolysis cell configured to retain a molten electrolyte bath, the bath including at least one bath component, the electrolysis cell including: a bottom, and a sidewall consisting essentially of the at least one bath component; and a feeder system, configured to provide a feed material including the least one bath component to the molten electrolyte bath such that the at least one bath component is within 2% of saturation, wherein, via the feed material, the sidewall is stable in the molten electrolyte bath.

公开(公告)号：US09551078B2

公开(公告)日：2017-01-24

申请号：US13575952

申请日：2010-09-27

Applicant: Jianhong Yang ,  Wangxing Li ,  Peng Cao

Inventor： Jianhong Yang ,  Wangxing Li ,  Peng Cao

IPC: C25B9/00 ,  C25C1/02 ,  C25C3/00 ,  C25C3/06 ,  C25C3/08 ,  C25C3/10 ,  C25C3/12 ,  C25C3/14 ,  C25C7/00 ,  C25C7/02

CPC classification number: C25C3/08 ,  C25C3/06

Abstract: An electrolytic cell for producing primary aluminum by using inert anodes is disclosed, in which an electrolyte system KF—NaF—AlF3 is used and the operating temperature of the cell is 700-850° C. The electrolytic cell comprises a cell shell, heat insulating refractory lining, a melting pot, a heat insulating cover, inert electrodes, electrode stems, anode bus-bars, cathode bus-bars, anode branching bus-bars, heat insulating plates, partitions between anodes and cathodes and a feeding device. The quality of the aluminum product obtained by using the electrolytic cell is not less than 99.7%. The cell is free from emission of carbon dioxide and perfluorinated compounds (PFCs), and hardly has consumption of electrodes, so the distances between anodes and cathodes can be kept stable. The cell is sealed and the volatilization of dust and fluorides can be prevented, and it is useful to recover oxygen gas.

Abstract translation: 公开了一种通过使用惰性阳极生产原铝的电解槽，其中使用电解质体系KF-NaF-AlF 3，电池的工作温度为700-850℃。电解槽包括电解槽，绝热 耐火衬里，熔池，绝热罩，惰性电极，电极杆，阳极汇流条，阴极汇流条，阳极支路母线，隔热板，阳极和阴极之间的隔板以及馈电装置。 通过使用电解槽得到的铝制品的质量不低于99.7％。 电池没有二氧化碳和全氟化合物（PFCs）的排放，几乎没有电极的消耗，所以阳极和阴极之间的距离可以保持稳定。 电池被密封，可以防止粉尘和氟化物的挥发，并且可以回收氧气。

公开(公告)号：US20150337446A1

公开(公告)日：2015-11-26

申请号：US14654377

申请日：2012-12-21

Applicant: OBSHESTVO S OGRANICHENNOY OTVETSTVENNOST'YU "OBEDINENNAYA KOMPANIYA RUSAL INZHENERNO

Inventor： Aleksandr Olegovich Gusev ,  Aleksey Gennad'evich Burtsev ,  Dmitriy Aleksandrovich Simakov ,  Aleksandr Leonidovich Voynich ,  Aleksandr Yur'evich Kolmakov

IPC: C25C3/08

CPC classification number: C25C3/08 ,  C25C3/16

Abstract: The invention relates to electrowinning of aluminium from cryolite-alumina melts, and can be used in the shunt design of a cathode assembly. In an aluminium electrolysis cell, cathode vertical metal shunts, are designed such that their top part is melted aluminium, and the bottom part is solid aluminium. Shunts are located in conduits made in a hearth slab lining which has a widening in the middle part which is wider than both parts of the shunts. The widening in the shunt conduit can be filled with a composite material, i.e. titanium diboride-carbon. The shunts can be designed as a tube, and the widening in the conduit and the space inside the tube can be filled with the composite material titanium diboride-carbon. The invention makes it possible to increase the electrical efficiency due to the absence of contact assemblies, reduced current loss, and achieving an effective current distribution and current shunting.

Abstract translation: 本发明涉及从冰晶石 - 氧化铝熔体中电解电解铝，并可用于阴极组件的分流设计。 在铝电解池中，阴极垂直金属分流器被设计为使其顶部熔融铝，底部为实心铝。 分流器位于炉底板衬里中的管道中，其中间部分的扩宽宽于分流器的两个部分。 分流管道中的加宽可以用复合材料，即二硼化钛 - 碳填充。 分流器可以设计成管，并且管道中的加宽和管内的空间可以填充复合材料二硼化钛 - 碳。 本发明使得可以由于不存在接触组件而增加电效率，降低电流损耗，并且实现有效的电流分配和电流分流。

公开(公告)号：US20150275381A1

公开(公告)日：2015-10-01

申请号：US14437388

申请日：2012-10-25

Applicant: OBSHCHESTVOS OGRANICHENNOY OTVETSTVENNOST'YU "OBEDINENNAYA KOMPANIYA RUSAL INZHENERNO-TEKHNOLOG

Inventor： Aleksandr Vladimirovich Proshkin ,  Samuil Yakovlevich Levenson ,  Vitaliy Valer'evich Pingin ,  Aleksey Vasil'evich Morozov

IPC: C25C3/08 ,  B05C11/08 ,  B05C11/02

CPC classification number: C25C3/08 ,  B05C11/025 ,  B05C11/08

Abstract: The invention relates to method and apparatus for lining the cathode of the electrolytic cell. The method comprises filling the cell's shell with powder material, leveling it with a rack, covering the fill material with a dust-proof film, and compaction. Compaction is performed in two stages: preliminary static and final dynamic treatment by consequent movement of static and dynamic work tools of compaction along the longitudinal axis of the cathode of the electrolytic cell through a cushion, which is made of at least 2 layers: a lower layer, which prevents pushing powder material forward in the direction of travel, and an upper layer, which provides for a coupling between the cushion and the static work tool. Static treatment unit of the apparatus is designed in the form of a roller with a drive, is connected to a dynamic treatment unit with a vibratory exciter by means of elastic elements, providing for a simultaneous movement relative to both the horizontal and vertical axes of the roller. The invention helps slow down the rate of penetration of molten fluoride salts into the cathode thermal insulation and increase the operating life of the cell.

Abstract translation: 本发明涉及用于衬底电解槽阴极的方法和装置。 该方法包括用粉末材料填充电池壳，用机架调平，用防尘膜覆盖填充材料，并压实。 压实分两个阶段进行：初步的静态和最终的动态处理，通过静电和动态作业工具沿着电解槽的阴极的纵向轴线移动，通过缓冲垫，其由至少2层制成：下部 层，其防止沿着行进方向向前推动粉末材料，以及上层，其提供衬垫和静态作业工具之间的联接。 设备的静电处理单元设计成具有驱动器的辊的形式，通过弹性元件连接到具有振动激励器的动态处理单元，提供相对于水平轴和垂直轴的同时运动 滚筒。 本发明有助于降低熔融氟化物盐渗透到阴极绝热中的速率，并且增加电池的使用寿命。

公开(公告)号：US20150218055A1

公开(公告)日：2015-08-06

申请号：US14308132

申请日：2014-06-18

Applicant: ALCOA INC.

Inventor： James C. McMillen ,  Jason Bick

IPC: C04B35/58 ,  C04B35/64

CPC classification number: C04B35/58071 ,  C04B35/64 ,  C04B35/645 ,  C04B38/0067 ,  C04B2235/5436 ,  C04B2235/6027 ,  C04B2235/9623 ,  C25C3/08 ,  F27D5/00 ,  F27D5/0006 ,  C04B38/067

Abstract: In one aspect of the instant disclosure, a setter plate assembly to sinter green titanium dioxide forms, such as aluminum smelting cathodes made by multiple forming methods is produced. The assembly is itself formed from sintered titanium diboride. The open area of the assembly and vents allow off-gassing during settering to producing a sintered product with reduced contamination. The setter plate assembly is made principally from titanium diboride, which is chemically compatible with green titanium dioxide forms.

Abstract translation: 在本公开的一个方面，制造了一种烧结绿色二氧化钛形成的固定板组件，例如通过多种成形方法制造的铝冶炼阴极。 组件本身由烧结的二硼化钛形成。 组装和通风口的开放区域允许在固化期间脱气以产生具有减少的污染物的烧结产品。 固定板组件主要由二硼化钛制成，其与绿色二氧化钛形式化学相容。