WO2014065692A1 - Способ и устройство футеровки катодного электролизера - Google Patents
Способ и устройство футеровки катодного электролизера Download PDFInfo
- Publication number
- WO2014065692A1 WO2014065692A1 PCT/RU2012/000875 RU2012000875W WO2014065692A1 WO 2014065692 A1 WO2014065692 A1 WO 2014065692A1 RU 2012000875 W RU2012000875 W RU 2012000875W WO 2014065692 A1 WO2014065692 A1 WO 2014065692A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- static
- cathode
- dynamic
- processing unit
- compaction
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/08—Spreading liquid or other fluent material by manipulating the work, e.g. tilting
Definitions
- the proposed technical solution relates to non-ferrous metallurgy, in particular, to the installation of cathode devices of electrolyzers for the production of primary aluminum using unshaped materials.
- the cathode devices of electrolytic cells for the production of primary aluminum consist of conductive cathode blocks that are thermally insulated from below. Between the cathode blocks and the thermal insulation there is a layer of barrier refractory materials designed to prevent the penetration of fluorine salts and sodium vapor into the thermal insulation layers.
- the process of leakage and interaction of the liquid phase of the electrolyte components from the hearth blocks into refractory materials is a complex phenomenon that includes physical and chemical interaction at the interface of a liquid melt consisting of NaF and Na3AlF6 and the refractory material, the structure of which is the primary factor for the indicated interaction.
- the driving force of the process of penetration of molten fluoride salts into barrier materials is the pressure gradient along the height of the barrier material.
- q is the volumetric flow rate of molten fluoride salts through
- barrier materials are heterogeneous structures with different pore size distributions, the conditionally range of pore sizes can be divided into three regions.
- the pressure gradient is caused mainly by hydrostatic and gravitational forces.
- capillary forces begin to appear. Due to the potential energy of the field of capillary forces, the pressure gradient is much higher than for large pores and such capillaries are able to intensively absorb molten fluorosols.
- the penetration depth of molten fluorosols can be determined by the relation following from the Poiseuille law:
- the penetration depth of the fluorine-containing melt decreases with an increase in its viscosity, a decrease in surface tension, and a decrease in the contact angle.
- the physicochemical characteristics of the melt included in relation (2) depend on both the temperature and the composition of the melt.
- the main component in the subcathode region is NaF, which is explained by the following reaction in the cathode block body during cryolite infiltration:
- nepheline reacts with silicon dioxide to form NaAlSi308 albite, which will be in a viscous glassy molten state that prevents further movement of the front of interaction into the lower part of the cathode of the electrolyzer:
- An increase in melt viscosity due to the presence of albite in the reaction zone between the aluminosilicate refractory lining and molten cryolite reduces the probability of fluorine salts penetrating into the lower heat-insulating layers of the base.
- the most widely used materials are aluminosilicate composition with a content of 28% ⁇ A1203 ⁇ 34%. A rather important role is played by their relatively low cost.
- barrier materials with thin winding channels having a dense packing of small particles are characterized by low gas permeability and, obviously, a slowed down process of penetration of molten fluoride salts or their reaction products with barrier materials ..
- there is a temperature gradient in the direction penetration increase in melt viscosity due to the formation of albite will also slow down the penetration process.
- lining of cathode devices of electrolytic cells uses molded products in the form of bricks of various sizes, mainly aluminosilicate composition, having low gas permeability and low porosity.
- the gas permeability of the barrier masonry as a whole is determined not by the properties of individual bricks, but mainly by the state of the joints between them.
- the mortar used for sealing by sealing joints, on the basis of which the masonry mortar is made, is vulnerable to fluorine salts and aggressive gases due to its high porosity.
- the water used in the preparation of masonry mortars causes problems in the installation of electrolytic cells at low temperatures and negatively affects the resistance of heat-insulating materials in the cathode device of the electrolyzer.
- a known method of lining including filling powdered material into the cathode casing of the electrolyzer, leveling it with a rail, characterized in that it uses a bulk unshaped material that reacts with fluorine salts to form a product that is in a solid state at operating temperatures in the cathode device.
- a bulk unshaped material that reacts with fluorine salts to form a product that is in a solid state at operating temperatures in the cathode device.
- a known method of lining including filling powdered material into the cathode casing of the electrolyzer, leveling it with a rail, characterized in that the compaction was carried out using ordinary rollers (Forresblad L. Vibration compaction of soils and bases. Transl. From English under the editorship of M. Kostelov M. P. Transport, 1987, 191 c).
- the evaluation of the results of static molding shows that they do not provide the required structure of the lining material - low porosity and small pore sizes.
- a known method of lining including filling powdered material into the cathode casing of the electrolyzer, leveling it with a rail, characterized in that the sealing of unformed materials, is carried out by external vibration of the railway platform on which the cathode device is installed (Siljan O, Junge O, Trygve B., Svendsen T., Thovsen K. Experiences with dry barrier powder materials in aluminum electrolysis cells - Light Metals, 1998, p. 573 -581).
- the disadvantage of this method is the diffraction of the material and the separation of particles along the layer height, and hence the insufficient degree of resistance to penetration of fluoride salts. This leads to high rates of chemical reactions, which reduces the life of the electrolytic cells.
- a known method of lining the cathode device of an aluminum electrolyzer includes filling powder material into the cathode casing of the electrolyzer, leveling it with a rail, characterized in that the compaction is performed by pneumatic ramming from above through a heat-resistant carbon mass (Weibel R. Advantages and disadvantages of using various refractory materials for Cathodes. In the book: Aluminum of Siberia. Krasnoyarsk, 2002, pp. 14-24). However, the use of the hot ramming mass is environmentally hazardous, and with the transition to the cold ramming mass and a decrease in the cryolite ratio, the service life of such electrolytic cells has become short.
- a known method of lining (Refractories for the cathodes of aluminum electrolysis cells / SG Sennikov and others - Refractories and technical ceramics, 2003, N2I O, p.22-31), which consists in filling powdered material into the cathode casing of the electrolyzer, leveling it using a rail, sequentially laying polyethylene film layers, fiberglass sheets or fiberboard on a filled material and packing the material dynamically using a sled with a vibrator).
- both compaction and decompression of the mixture occur simultaneously, as a result of which dusting of the rammed material is observed.
- a known method of lining includes filling powder material into the cathode casing of the electrolyzer, leveling it with rails, characterized in that the seal is made by rollers equipped with vibration mechanisms (Patent US 4184787; ⁇ 19/38). This leads to a slight increase in packing density, however, the resulting barrier layer nevertheless has a rather high porosity (up to 25%), and, in addition, its surface has wave-like defects.
- a known method of lining a cathode device of an aluminum electrolysis cell comprising filling powdered material into the cathode casing of the electrolyzer, leveling it with a rail, characterized in that the seal starts from the corner of the cathode casing and is made in a spiral direction from the outside to the center of the cathode.
- the vibrator is moved with a overlap of a few centimeters of the previous densified area. For the final compaction of barrier mixtures, it is necessary to make several complete cycles of vibrator passes.
- the main disadvantage of this method of lining is the need for multiple passes of the vibrating plate over the surface of the barrier material in the cathode device due to the small size of the platform.
- the parameters of the resulting barrier layer depend on the qualification and integrity of the operator.
- the most significant drawback is that the operation of the vibrating plate is based mainly on the dynamic molding method with non-optimal amplitude-frequency and weight characteristics. In conditions of low bulk density of the lining material, this leads to the fact that both processes of compaction and decompression of the mixture occur simultaneously. As a result of this, dusting of the compacted material is observed.
- a known method of forming seamless lining layers in aluminum electrolysis cells including filling powdered material into the cathode casing of the electrolytic cell, leveling it with a rail, covering the filled material with a dust insulating film and sealing, characterized in that the material is compacted in two stages: preliminary static and final dynamic impact by sequential movement of the working bodies of static and dynamic compaction along the longitudinal axis of the cat yes aluminum electrolysis over the entire width futero- novel developing layer formed via a flexible gasket, the dynamic uplotne- of material is carried out at a constant vibroblokami of the static load acting on them.
- the compaction is carried out in two stages: preliminary static and final dynamic action, by sequentially moving the working bodies of the static and dynamic compaction along the longitudinal axis of the cathode of the aluminum electrolyzer over the entire width of the formed lining layer through an elastic gasket, while the dynamic compaction of the material they are vibroblocked with a constant static load on them.
- This method of lining does not meet the requirement of obtaining a high-quality barrier layer of great depth with a low bulk density.
- the technical device with which the aforementioned lining process is carried out is a device for forming lining of seamless lining layers in aluminum electrolyzers, (RF Patent RU 2296819 class. ⁇ 25 ⁇ 3/06, ⁇ 25 ⁇ 3/08, published in BI JYS IO, 2007).
- a device for forming seamless lining layers in aluminum electrolyzers contains a drive, a sealing device, consisting of a block for static processing and a block of dynamic processing, a block for static processing is made in the form of a roller with a drive and is connected to the roller by means of a rocker arm and pull unit dynamic processing, made in the form of a vibration unit, including a vibration exciter with a directed driving force and installed with the possibility of its movement around the horizontal axis of the roller.
- the main disadvantage of the prototype device is the extrusion of the material being compacted in front of the static processing unit during the formation of a barrier layer of great depth with a low bulk density.
- the lack of structural elements in the prototype device that contribute to the damping of the horizontal component of vibration exposure leads to technical difficulties when using vibration exciters with circular driving force or vibration exciters with directed driving force mounted on the vibrating unit at an acute angle to the surface to be machined. due to vibration transmission of the entire structure.
- the motors of the static processing unit and other elements of the device are subjected to vibration, which can lead to their failure and, consequently, the reliability and durability of the device as a whole are reduced.
- the objective of the proposed technical solution is to reduce the apparent porosity of the lining layers obtained from unformed materials and to increase the reliability of its operation.
- the technical result of the invention is to slow down the penetration rate of molten fluorosols and aggressive gaseous components through the barrier layer into the cathode thermal insulation, improve the performance of the electrolyzer (reduce energy costs for the production of 1 ton of aluminum, increase the service life).
- the problem is solved in that in the method of lining the cathode devices of aluminum electrolytic cells, which includes filling the powdered material into the cathode casing of the electrolyzer, leveling it with the help of a rail, covering the filled material with a dust-proof film and sealing in two stage: preliminary static and final dynamic action, by sequentially moving the working bodies of static and dynamic compaction along the longitudinal axis of the cathode aluminum of the electrolyser through an elastic gasket, the elastic gasket is made of at least two layers: the lower one, which prevents the powder-like material from being squeezed forward in the direction of travel, and the upper one, which provides the adhesion of the gasket to the working body of static consolidation.
- the seal is made along the longitudinal sides of the cathode device to a width of at least 0.5 of the width of the cathode device; the stiffness of the gasket varies in the range 80+ 270 Nm 2 , and as the lower layer of the gasket use steel sheets with a thickness of (2.5 + 4) * 10-4, a width of 0.12 + 0.15 and a length of 0.2 + 0.25 from the width of the moldable layer, and steel sheets are laid across the entire sealing area end-to-end along the long side of the cathode device in 3-4 rows, and rubber fabric material with a thickness of 2 is laid as the upper layer that provides adhesion of the gasket to the working member of the static seal -3 of the thickness of the steel sheet.
- a device for implementing the method comprising a static processing unit, made in the form of a roller with a drive and a dynamic processing unit with installed on it by a vibration exciter, the dynamic processing unit is connected to the static processing unit by means of elastic elements with the possibility of simultaneous movement relative to the horizontal and vertical axes of the roller.
- the proposed device is complemented by private distinctive features aimed at solving the task.
- the device can be made in such a way that the connection of the dynamic processing unit with the static processing unit can be performed by means of elastic elements made of rubber or by means of metal springs. This excludes the transmission of vibration to the electric motor and other elements, in particular, to the metal structure of the device when using vibration exciters with circular driving force or vibration exciters with directed driving force mounted on the vibration unit at an acute angle to the processed surface, as well as improving the reliability and durability of the device as a whole.
- FIG. 1 shows a device for forming seamless lining layers in aluminum electrolytic cells (side view) with elastic elements from metal springs;
- FIG. 2 - a device for forming seamless lining layers in aluminum electrolyzers (side view) with elastic elements made of rubber.
- a device for forming seamless lining layers in aluminum electrolysis cells consists of drive disks 1, which form a drive unit for static compaction in the form of a roller, vibro-block 2 with vibrator 3, weights 4, located on the cargo area 5, which is connected to vibro-block 2 by means of elastic elements 6 and 7 (from metal springs of Fig. 1, from rubber of Fig. 2), combining the vibro-block and the block for static impact on the material into the sealing device using the rocker arm 8 with the possibility of free movement in Ibrobloc relative to the horizontal and vertical axes (anchor) of the roller.
- the drive of the device for forming seamless lining layers in aluminum electrolyzers consists of a geared motor 9, a chain gear 10.
- the geared motor 9 is mounted on the skid 8, to which a load platform 5 is also attached.
- the gear motor 9 and the vibrators 3 are started from the control panel.
- the stand includes a container for placing bulk material and a local VPU block, which allows for the deformation of bulk media by static loading with the imposition of vibration loads of different frequency spectrum and intensity.
- the VPU When moving into containers with material, the VPU creates preliminary static loading by rollers 1, which are also a movement mechanism, and dynamic loading is carried out by vibro-block 2, the amplitude-frequency characteristic of which is set by vibration exciter 3.
- a vibration exciter with directional excitation was used as the oscillation source or circular driving force.
- VPU was installed in a container 4 filled with bulk material 5, the filling height was 300 ... 500 mm.
- the material was densified through an elastic coating consisting of a metal sheet 6 (Fig. 4) 2 mm thick and a rubber plate 7 5 mm thick.
- the coating prevented the extrusion of material from under the rollers, helped to reduce dustiness of the air, and kept the installation on the surface of the material with a large thickness of the sealing layer.
- two loading methods are possible: the first is static (the vibration unit is off), the second is combined (simultaneous static and dynamic loading).
- the material located between the roller and the vibrating unit When combined exposure, the material located between the roller and the vibrating unit, is closed in a limited volume. Its extrusion from the side of the vibratory block is prevented by the final compaction material, on the roller side - pre-compacted material, on top - an elastic coating.
- Vibration acceleration in the material and on the vibration unit was recorded by piezoelectric sensors 8 and 9 (Fig. 5), which made it possible to simultaneously track the horizontal and vertical components of the vibrations.
- the signal from the sensors was amplified, integrated, and transmitted to a personal computer.
- the density of the layers of the obtained compact was estimated using a B-1 static densitometer, and the density of the obtained compact was characterized by a dynamic modulus of elasticity, which was measured by a portable soil shrinkage meter ⁇ LFG (Fig. 3).
- a compression wave arises under the vibratory block, which deforms the material, while some of it is squeezed into a closed region, exerting pressure on the bulk mass there.
- this region under the action of vibration and the rheological effects associated with it, there is a mutual movement of material particles, which tend to form a denser structure, as well as the displacement of moisture and air, that is, preliminary dynamic compaction is carried out.
- the process of deformation of the material ends after the direct impact on it of compressive loads created by the vibrating unit.
- FIG. 9 shows the results of measuring the depth of vibration velocity in the array of material to be sealed.
- the origin is aligned with the day surface of the material being compacted.
- the dependences presented in Figure 3 correspond to oscillation frequencies of 25 Hz, 34 Hz, and 49.6 Hz (curves 1, 2, and 3, respectively).
- Markers, g and ⁇ indicate points obtained experimentally and corresponding to vibrational frequencies of 25 Hz, 34 Hz and 49.6 Hz.
- the frequency of vibration exposure does not significantly affect the density of the material in depth for a given frequency range.
- the highest density of the material was recorded in the upper layers of the compacted array to a penetration depth (depth at which the oscillations decay by a factor of e), which was 230 mm, the packing density decreases at a greater depth, which is associated with a decrease in the intensity of vibration due to damping of vibrations .
- cathode lining described above will make it possible to obtain a total economic effect per 1 cell of at least $ 2 thousand per year by reducing the cost of lining materials and reducing labor costs for their installation.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Gasket Seals (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU2012/000875 WO2014065692A1 (ru) | 2012-10-25 | 2012-10-25 | Способ и устройство футеровки катодного электролизера |
RU2013151911/02A RU2553145C1 (ru) | 2012-10-25 | 2012-10-25 | Способ футеровки катодного устройства электролизера неформованными материалами |
CA2950888A CA2950888C (en) | 2012-10-25 | 2012-10-25 | Method and apparatus for lining the cathode of the electrolytic cell |
CN201280076603.9A CN104937143B (zh) | 2012-10-25 | 2012-10-25 | 用于为电解池的阴极加装内衬的方法和设备 |
AU2012393038A AU2012393038B2 (en) | 2012-10-25 | 2012-10-25 | Method and apparatus for lining the cathode device of an electrolytic cell |
US14/437,388 US9822457B2 (en) | 2012-10-25 | 2012-10-25 | Method and apparatus for lining the cathode of the electrolytic cell |
CA2889749A CA2889749C (en) | 2012-10-25 | 2012-10-25 | Method and apparatus for lining the cathode of the electrolytic cell |
AU2017200397A AU2017200397B2 (en) | 2012-10-25 | 2017-01-20 | Method and apparatus for lining the cathode of the electrolytic cell |
US15/496,901 US10501856B2 (en) | 2012-10-25 | 2017-04-25 | Method and apparatus for lining the cathode of the electrolytic cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU2012/000875 WO2014065692A1 (ru) | 2012-10-25 | 2012-10-25 | Способ и устройство футеровки катодного электролизера |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/437,388 A-371-Of-International US9822457B2 (en) | 2012-10-25 | 2012-10-25 | Method and apparatus for lining the cathode of the electrolytic cell |
US15/496,901 Division US10501856B2 (en) | 2012-10-25 | 2017-04-25 | Method and apparatus for lining the cathode of the electrolytic cell |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014065692A1 true WO2014065692A1 (ru) | 2014-05-01 |
Family
ID=50544953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2012/000875 WO2014065692A1 (ru) | 2012-10-25 | 2012-10-25 | Способ и устройство футеровки катодного электролизера |
Country Status (6)
Country | Link |
---|---|
US (2) | US9822457B2 (ru) |
CN (1) | CN104937143B (ru) |
AU (2) | AU2012393038B2 (ru) |
CA (2) | CA2950888C (ru) |
RU (1) | RU2553145C1 (ru) |
WO (1) | WO2014065692A1 (ru) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2667270C1 (ru) * | 2017-10-19 | 2018-09-18 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Способ формирования футеровочных слоев в катодном кожухе алюминиевых электролизеров и устройство для его осуществления |
EA202190684A1 (ru) | 2018-09-04 | 2021-06-03 | Норск Хюдро Аса | Способ получения барьерного слоя катодной футеровки в электролитической ячейке и материал для этого слоя |
RU2754560C1 (ru) | 2020-11-25 | 2021-09-03 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Способ футеровки катодного устройства электролизера для получения алюминия |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6258224B1 (en) * | 1998-12-16 | 2001-07-10 | Alcan International Limited | Multi-layer cathode structures |
CN1928161A (zh) * | 2006-08-11 | 2007-03-14 | 王文 | 铝电解槽用侧部内衬及废阴极在制备其侧部内衬中的应用 |
RU2296819C1 (ru) * | 2005-08-17 | 2007-04-10 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Способ формирования бесшовных футеровочных слоев в алюминиевых электролизерах и устройство для его осуществления |
RU2385972C1 (ru) * | 2008-11-21 | 2010-04-10 | ЮНАЙТЕД КОМПАНИ РУСАЛ АйПи ЛИМИТЕД | Способ футеровки катодного устройства электролизера для получения алюминия |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2706667A1 (de) | 1977-02-17 | 1979-01-11 | Bosch Gmbh Robert | Vibrationsgeraet zur bodenverdichtung |
NO150007C (no) | 1982-03-05 | 1984-08-01 | Sintef | Sperreskikt for aluminiumelektrolyseovner. |
US5314599A (en) * | 1992-07-28 | 1994-05-24 | Alcan International Limited | Barrier layer against fluoride diffusion in linings of aluminum reduction cells |
DE10007869C1 (de) | 2000-02-21 | 2001-08-23 | Ammann Verdichtung Gmbh | Vibrationsplatte |
RU2270887C2 (ru) * | 2003-12-25 | 2006-02-27 | Открытое акционерное общество "Сибирский научно-исследовательский, конструкторский и проектный институт алюминиевой и электродной промышленности" (ОАО "СибВАМИ") | Способ монтажа боковой футеровки катодного устройства алюминиевого электролизера |
RU2266983C1 (ru) * | 2004-03-16 | 2005-12-27 | Общество с ограниченной ответственностью "Инженерно-технологический центр" | Катодная футеровка алюминиевого электролизера |
CN101037775A (zh) * | 2007-04-25 | 2007-09-19 | 中国铝业股份有限公司 | 一种大型预焙铝电解槽内衬结构 |
-
2012
- 2012-10-25 RU RU2013151911/02A patent/RU2553145C1/ru active
- 2012-10-25 CN CN201280076603.9A patent/CN104937143B/zh active Active
- 2012-10-25 CA CA2950888A patent/CA2950888C/en active Active
- 2012-10-25 WO PCT/RU2012/000875 patent/WO2014065692A1/ru active Application Filing
- 2012-10-25 US US14/437,388 patent/US9822457B2/en active Active
- 2012-10-25 CA CA2889749A patent/CA2889749C/en active Active
- 2012-10-25 AU AU2012393038A patent/AU2012393038B2/en not_active Ceased
-
2017
- 2017-01-20 AU AU2017200397A patent/AU2017200397B2/en not_active Ceased
- 2017-04-25 US US15/496,901 patent/US10501856B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6258224B1 (en) * | 1998-12-16 | 2001-07-10 | Alcan International Limited | Multi-layer cathode structures |
RU2296819C1 (ru) * | 2005-08-17 | 2007-04-10 | Общество с ограниченной ответственностью "Русская инжиниринговая компания" | Способ формирования бесшовных футеровочных слоев в алюминиевых электролизерах и устройство для его осуществления |
CN1928161A (zh) * | 2006-08-11 | 2007-03-14 | 王文 | 铝电解槽用侧部内衬及废阴极在制备其侧部内衬中的应用 |
RU2385972C1 (ru) * | 2008-11-21 | 2010-04-10 | ЮНАЙТЕД КОМПАНИ РУСАЛ АйПи ЛИМИТЕД | Способ футеровки катодного устройства электролизера для получения алюминия |
Also Published As
Publication number | Publication date |
---|---|
AU2012393038A1 (en) | 2015-05-14 |
RU2013151911A (ru) | 2015-05-27 |
AU2017200397B2 (en) | 2018-10-11 |
CN104937143A (zh) | 2015-09-23 |
CA2889749C (en) | 2017-05-02 |
AU2012393038B2 (en) | 2017-02-16 |
US20170321337A1 (en) | 2017-11-09 |
CA2950888C (en) | 2018-01-02 |
CN104937143B (zh) | 2017-06-16 |
US10501856B2 (en) | 2019-12-10 |
US9822457B2 (en) | 2017-11-21 |
AU2017200397A1 (en) | 2017-02-09 |
RU2553145C1 (ru) | 2015-06-10 |
US20150275381A1 (en) | 2015-10-01 |
CA2950888A1 (en) | 2014-05-01 |
CA2889749A1 (en) | 2014-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10501856B2 (en) | Method and apparatus for lining the cathode of the electrolytic cell | |
US4175022A (en) | Electrolytic cell bottom barrier formed from expanded graphite | |
US11885035B2 (en) | Formation of lining layers in the cathode shells of aluminium electrolytic reduction cells | |
RU2296819C1 (ru) | Способ формирования бесшовных футеровочных слоев в алюминиевых электролизерах и устройство для его осуществления | |
CN107709624B (zh) | 用于铝生产的还原槽的阴极组件的内衬 | |
RU2266983C1 (ru) | Катодная футеровка алюминиевого электролизера | |
JPH028437A (ja) | 亀裂を予想される本体またはキャビティ形成壁を密閉する方法 | |
RU2606374C1 (ru) | Способ футеровки катодного устройства электролизера | |
NO317744B1 (no) | Innvendig gulvutkledning for elektrolyseceller og fremgangsmate for fremstilling derav samt fremgangsmate for opparbeiding av en brukt gulvutkledning. | |
RU2614357C2 (ru) | Способ футеровки катодного устройства электролизера для получения первичного алюминия (варианты) | |
CN205561551U (zh) | 一种回转热设备悬空式炉衬结构 | |
RU2754560C1 (ru) | Способ футеровки катодного устройства электролизера для получения алюминия | |
CN105716428A (zh) | 一种回转热设备悬空式炉衬结构 | |
WO2021107813A1 (ru) | Способ рециклинга футеровочного материала катодного устройства электролизера и устройство для его осуществления | |
SU1434331A1 (ru) | Способ определени в зкости дисперсных систем | |
RU2068460C1 (ru) | Способ монтажа футеровки катодного устройства алюминиевого электролизера | |
Wilson | New Zealand pumice as a lightweight concrete aggregate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2013151911 Country of ref document: RU Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12887170 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14437388 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2889749 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2012393038 Country of ref document: AU Date of ref document: 20121025 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12887170 Country of ref document: EP Kind code of ref document: A1 |