EP2598675A1 - Kathodenblock für eine aluminium-elektrolysezelle und ein verfahren zu seiner herstellung - Google Patents
Kathodenblock für eine aluminium-elektrolysezelle und ein verfahren zu seiner herstellungInfo
- Publication number
- EP2598675A1 EP2598675A1 EP11743994.3A EP11743994A EP2598675A1 EP 2598675 A1 EP2598675 A1 EP 2598675A1 EP 11743994 A EP11743994 A EP 11743994A EP 2598675 A1 EP2598675 A1 EP 2598675A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cathode block
- hard material
- coke
- material powder
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000005868 electrolysis reaction Methods 0.000 title abstract description 6
- 239000004411 aluminium Substances 0.000 title abstract 2
- 230000008569 process Effects 0.000 title description 8
- 239000000463 material Substances 0.000 claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 19
- 239000010439 graphite Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000009826 distribution Methods 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 239000000571 coke Substances 0.000 claims description 66
- 239000000843 powder Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 13
- 238000005087 graphitization Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 239000003575 carbonaceous material Substances 0.000 claims description 9
- 238000003763 carbonization Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims 1
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 abstract 1
- 229910033181 TiB2 Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 5
- 238000010000 carbonizing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000009626 Hall-Héroult process Methods 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000499 effect on compression Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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
Definitions
- the present invention relates to a cathode block for an aluminum electrolytic cell and a method for its production.
- the bottom of an electrolytic cell is typically formed by a cathode surface consisting of individual cathode blocks. From below, the cathodes are contacted via steel ingots, which are placed in corresponding elongated recesses in the bottom of the cathode blocks.
- Cathode blocks are conventionally made by mixing coke with carbonaceous particles such as anthracite, carbon or graphite, compacting and carbonizing.
- carbonaceous particles such as anthracite, carbon or graphite
- a graphitizing step at higher temperatures follows, at which the carbonaceous particles and the coke are at least partially converted to graphite.
- TiB 2 is introduced into an upper layer of a cathode block. This is described for example in DE 1 12006004078.
- a top layer which is a TiB 2 graphite composite, is in direct contact with the aluminum melt and thus crucial for the current injection from the cathode into the molten aluminum.
- TiB 2 and similar hard materials cause an improvement in the wettability of the cathode in the graphitized state and thus better energy efficiency of the electrolysis process.
- Hard materials can also increase the bulk density and hardness of Cathodes increase, which has a better wear resistance, especially compared to aluminum and Kryolitschmelzen result.
- TiB 2 powders and similar hard material powders are difficult to process.
- cathode blocks made with them which form a TiB 2 graphite composite layer completely or in their upper layer, tend to be inhomogeneities.
- the object of the present invention is therefore to provide a TiB 2 graphite composite cathode which is readily wettable to aluminum melts, has good wear properties and is easy to produce, and a process for their preparation.
- a cathode block for an aluminum electrolytic cell according to the invention which comprises a composite layer containing graphite and a hard material such as TiB 2 , is characterized in that the hard material is in a monomodal particle size distribution, the mean particle size of the distribution d 50 being between 10 and 20 pm, in particular between 12 and 18 m, in particular between 14 and 16 pm.
- the hard material powder in such a d 50, has a large active surface, which causes a very good wettability of the cathode block after the graphitization, but on the other hand does not have the disadvantages which a processing of the hard material powder as Influence composite component in a graphite-hard material composite negatively.
- Dusting for example when filling in a mixing container or during transport of the powder,
- Agglomerate formation in particular during mixing, such as wet mixing with coke (wet mixing in this context means, in particular, mixing with pitch as the liquid phase), - Demixing due to different material densities of hard material and coke.
- the hard material powder used according to the invention has a particularly good flowability or flowability. This makes the hard material powder particularly well with conventional conveyors, for example, conveyed to a mixing apparatus.
- cathode blocks Due to the good processability of the hard material powder with the d 50 between 10 and 20 pm and a monomodal particle size distribution, the production of hard material powder composites for cathode blocks is greatly simplified.
- the obtained cathode blocks have a very good homogeneity with respect to the distribution of the hard material powder in the coke in the green body and in the graphite in the graphitized cathode body.
- the d 90 of the refractory hard material is preferably between 20 and 40 ⁇ m, in particular between 25 and 30 ⁇ m. This advantageously has the consequence that wetting and processing properties of the hard material powder are even better.
- the d-m of the refractory hard material is between 2 and 7 pm, in particular between 3 and 5 pm. This advantageously has the consequence that wetting and processing properties of the hard material powder are even better.
- Span of the refractory hard material powder is advantageously between 0.65 and 3.80, in particular between 1.00 and 2.25. This has the advantageous consequence that wetting and processing properties of the hard material powder are even better.
- the composite layer forms the entire cathode block. This has the advantage that for the preparation of the cathode block a only green composition is necessary and accordingly only a single mixing step.
- the cathode block may have at least two layers, wherein the composite layer forms the upper layer of the cathode block.
- This top layer is in use of the cathode block according to the invention in direct contact with the melt of the electrolysis cell.
- the cathode block preferably has at least one further layer which has less hard material powder than the upper layer or no hard material powder. This can reduce the amount of expensive hard material powder used.
- the further layer is not in direct contact with the aluminum melt and therefore does not have to have good wettability and wear resistance.
- the top layer may have a height which is 10 to 50%, in particular 15 to 45%, of the total height of the cathode block.
- a small height of the topsheet, such as 20%, may be advantageous because a small amount of expensive hard material is needed.
- a high height of the topsheet such as 40% may be advantageous because a layer having hard material has high wear resistance. The greater the height of this highly wear-resistant material in relation to the
- a cathode block according to the invention is prepared by a method comprising the steps of providing starting materials comprising coke, a hard material such as TiB 2 , and optionally another carbonaceous material, forming the cathode block, carbonizing and graphitizing, and cooling.
- the coke comprises two types of coke, which have a different volume change behavior during carbonation and / or graphitization and / or cooling.
- the graphitizing step at least a portion of carbon in the cathode block is converted to graphite.
- a cathode block produced by a method according to the invention has a bulk density of a carbon content of more than 1.68 g / cm 3 , more preferably of more than 1.71 g / cm 3 , in particular of up to 1.75 g / cm 3 .
- a higher apparent density advantageously contributes to a longer service life. This may be due to the fact that more mass is present per unit volume of a cathode block, resulting in a given mass removal per unit time to a higher residual mass after a given removal period. On the other hand, it can be assumed that a higher bulk density with a corresponding corresponding lower porosity hampers an infiltration of electrolyte, which acts as a corrosive medium.
- the second layer may have a bulk density of, for example, more than 1.80 g / cm 3 because of the addition of RHM after graphitization.
- the two types of coke comprise a first type of coke and a second type of coke, the first type of coke having a greater shrinkage and / or expansion during the carbonizing and / or graphitizing and / or cooling than the second type of coke.
- the increased shrinkage and / or expansion is an advantageous embodiment of a different volume change behavior, which is probably particularly well suited to lead to a greater compression than when coke are mixed, which have an equal shrinkage and / or expansion.
- the stronger shrinkage and / or expansion refers to any temperature range.
- a different volume change behavior may be present during cooling.
- the shrinkage and / or expansion of the first type of coke during carbonation and / or graphitization and / or cooling based on the volume is at least 10% higher than that of the second coke variety, in particular at least 25% higher, in particular at least 50% higher.
- the shrinkage and / or expansion of the first type of coke during carbonation and / or graphitization and / or cooling based on the volume at least 100% higher than that of the second coke, in particular at least 200% higher, in particular at least 300% higher.
- the expansion from room temperature to 1000 ° C. for the second type of coke 1 is 0% by volume, whereas for the first type of coke it is 4.0% by volume.
- the first type of coke undergoes shrinkage the second coke variety, however, an expansion in the same temperature interval, is detected by the inventive method.
- a 300% higher shrinkage and / or expansion also includes the case that the second type of coke shrinks by 1, 0 vol .-%, the first Koksorte, however, by 2.0 vol .-% expands.
- the second type of coke may have a greater shrinkage and / or expansion, as described above for the first coke variety.
- a cathode block according to the invention is produced by a process comprising the steps of providing starting materials comprising coke, forming the cathode block, carbonizing and graphitizing, and cooling.
- the coke preferably contains two types of coke, which are During the carbonization and / or graphitization and / or cooling, the volume change behavior leads to a densification of the cathode block of more than 1.68 g / cm 3 .
- different volume change behavior of the two types of coke lead to the fact that in a compression process during carbonization and / or graphitization and / or cooling, hooking or otherwise blocking of individual coke particles, which is attributed to similar shrinkage properties, can be prevented.
- individual particles can presumably migrate to positions which are more favorable for compaction, and thus a higher packing density of the coke particles or the particles resulting therefrom in the further process than in conventional production processes can be achieved.
- the advantages of a multi-layer block in which the layer facing the anode comprises a hard material are combined with the use of two types of coke with different volume change behavior.
- Heat treatment steps reduce production times and reject rates of the cathode blocks. Furthermore, therefore, advantageously the resistance to thermal stresses and resulting damage in the application is also increased.
- At least one of the two types of coke is preferably a petroleum or coal-tar coke.
- the weight percent of the second coke variety in the total amount of coke is between 50% and 90%.
- the different volume change behavior of the first and second types of coke has a particularly good effect on compression during carbonization and / or graphitization and / or cooling.
- Conceivable quantity ranges of the second type of coke can be 50 to 60%, but also 60 to 80%, and 80 to 90%.
- At least one carbonaceous material and / or pitch and / or additives are added to the coke. This can be done both with regard to the processability keit of the coke and the subsequent properties of the cathode block produced be advantageous.
- the further carbonaceous material contains graphite-containing material;
- the further carbonaceous material is graphite-containing material, such as graphite.
- the graphite may be synthetic and / or natural graphite.
- the carbonaceous material is advantageously 1 to 40% by weight, in particular from 5 to 30% by weight, based on the total amount of coke and carbonaceous material.
- pitch in addition to the amount of coke and optionally carbonaceous material, which represents a total of 100 wt .-%, pitch in amounts of 5 to 40 wt .-%, in particular 15 to 30 wt .-% (based on 100 wt .-% the entire green mix). Pitch acts as a binder and serves to create a dimensionally stable body during carbonation.
- Advantageous additives may be oil, such as press liquor oil, or stearic acid. These facilitate mixing of the coke and optionally the other components.
- the coke comprises at least in one of the two layers, ie in the first and / or the second layer, two types of coke with a different volume change behavior during carbonization and / or graphitization and / or cooling to a densification of the resulting graphite above 1.68 g / cm 3 .
- both layers or one of the two layers can thus be produced according to the invention with two different types of coke.
- only the first layer can be produced according to the invention with two types of coke, while the second layer is produced with only one type of coke, but additionally contains TiB 2 as hard material.
- the bulk densities and / or Expansion behavior of the two layers aligned which can advantageously increase the resistance of the layer compound.
- the sole FIGURE 1 shows a particle size distribution of a TiB 2 powder used according to the invention: a) as the volume density distribution q 3 and b) as the volume sum distribution Q 3.
- coke is mixed with pitch, mixed with TiB 2 powder having a monomodal particle size distribution and a d 50 of 15 ⁇ m, a d 90 of 30 ⁇ m and a dm of 5 ⁇ m.
- the span value for this particle size distribution is 1.67.
- the weight fraction of TiB 2 powder on the green mass is, for example, 10 to 30% by weight, such as 20% by weight. The mixture becomes in a form, which is largely the later form of the
- Cathode blocks are filled, filled and vibrationally compressed or block pressed.
- the resulting green body is heated to a final temperature in a range of 2300 to 3000 ° C, in particular 2500 to 2900 ° C, such as 2800 ° C, wherein a carbonation step and then a graphitization occur, and then cooled.
- the resulting cathode block has a very good wetting behavior and a very high resistance to wear compared with liquid aluminum and cryolite.
- the mold is initially partially filled with a mixture of coke, graphite and TiB 2 and, if necessary, vibrationally precompressed. Subsequently, the resulting output layer, which at the later cathode represents the upper layer facing the anode and thus making direct contact with the aluminum melt, a mixture of coke and graphite filled and in turn compacted. The resulting upper starting layer at the later cathode represents the lower layer facing away from the anode.
- This two-layer brick is carbonized and graphitized as in the first embodiment.
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)
- Ceramic Products (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010038669 DE102010038669A1 (de) | 2010-07-29 | 2010-07-29 | Kathodenblock für eine Aluminium-Elektrolysezelle und ein Verfahren zu seiner Herstellung |
PCT/EP2011/063082 WO2012013772A1 (de) | 2010-07-29 | 2011-07-29 | Kathodenblock für eine aluminium-elektrolysezelle und ein verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2598675A1 true EP2598675A1 (de) | 2013-06-05 |
EP2598675B1 EP2598675B1 (de) | 2017-03-08 |
Family
ID=44630342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11743994.3A Active EP2598675B1 (de) | 2010-07-29 | 2011-07-29 | Kathodenblock für eine aluminium-elektrolysezelle und ein verfahren zu seiner herstellung |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP2598675B1 (de) |
JP (1) | JP5714108B2 (de) |
CN (1) | CN103038396B (de) |
CA (1) | CA2805866C (de) |
DE (1) | DE102010038669A1 (de) |
RU (1) | RU2533066C2 (de) |
UA (1) | UA109019C2 (de) |
WO (1) | WO2012013772A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011004013A1 (de) * | 2011-02-11 | 2012-08-16 | Sgl Carbon Se | Graphitierter Kathodenblock mit einer abrasionsbeständigen Oberfläche |
DE102011004014A1 (de) * | 2011-02-11 | 2012-08-16 | Sgl Carbon Se | Kathodenblock mit einer Hartstoff enthaltenden Deckschicht |
DE102012201468A1 (de) * | 2012-02-01 | 2013-08-01 | Sgl Carbon Se | Verfahren zur Herstellung eines Kathodenblocks für eine Aluminium-Elektrolysezelle und einen Kathodenblock |
DE102013202437A1 (de) * | 2013-02-14 | 2014-08-14 | Sgl Carbon Se | Kathodenblock mit einer benetzbaren und abrasionsbeständigen Oberfläche |
US11339490B2 (en) | 2015-04-23 | 2022-05-24 | United Company RUSAL Engineering and Technology Centre LLC | Aluminum electrolyzer electrode (variants) |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL129768C (de) * | 1965-01-06 | |||
JPS5849483B2 (ja) * | 1976-04-02 | 1983-11-04 | 東洋カ−ボン株式会社 | アルミニウム電解槽用陰極炭素ブロック製造法 |
US4308114A (en) * | 1980-07-21 | 1981-12-29 | Aluminum Company Of America | Electrolytic production of aluminum using a composite cathode |
US4308115A (en) * | 1980-08-15 | 1981-12-29 | Aluminum Company Of America | Method of producing aluminum using graphite cathode coated with refractory hard metal |
US4376029A (en) * | 1980-09-11 | 1983-03-08 | Great Lakes Carbon Corporation | Titanium diboride-graphite composits |
JPS59500974A (ja) * | 1982-06-03 | 1984-05-31 | グレ−ト レ−クス カ−ボン コ−ポレ−シヨン | アルミニウム還元電解槽の陰極素子 |
US4526669A (en) * | 1982-06-03 | 1985-07-02 | Great Lakes Carbon Corporation | Cathodic component for aluminum reduction cell |
US4582553A (en) * | 1984-02-03 | 1986-04-15 | Commonwealth Aluminum Corporation | Process for manufacture of refractory hard metal containing plates for aluminum cell cathodes |
JPH05263285A (ja) * | 1992-03-17 | 1993-10-12 | Nippon Light Metal Co Ltd | アルミニウム電解用電極 |
ZA939468B (en) * | 1992-12-17 | 1994-08-10 | Comalco Alu | Electrolysis cell for metal production |
JP3977472B2 (ja) * | 1997-01-23 | 2007-09-19 | 新日本テクノカーボン株式会社 | 低熱膨張係数を有する高密度等方性黒鉛材の製造方法 |
DE19714433C2 (de) * | 1997-04-08 | 2002-08-01 | Celanese Ventures Gmbh | Verfahren zur Herstellung einer Beschichtung mit einem Titanborid-gehald von mindestens 80 Gew.-% |
US6649040B1 (en) * | 1998-11-17 | 2003-11-18 | Alcan International Limited | Wettable and erosion/oxidation-resistant carbon-composite materials |
US7462271B2 (en) * | 2003-11-26 | 2008-12-09 | Alcan International Limited | Stabilizers for titanium diboride-containing cathode structures |
US20050253118A1 (en) * | 2004-05-17 | 2005-11-17 | Sgl Carbon Ag | Fracture resistant electrodes for a carbothermic reduction furnace |
CN100491600C (zh) | 2006-10-18 | 2009-05-27 | 中国铝业股份有限公司 | 一种可湿润阴极炭块的制备方法 |
KR20090094098A (ko) * | 2006-12-22 | 2009-09-03 | 도요탄소 가부시키가이샤 | 흑연 재료 및 그의 제조 방법 |
CN101158048A (zh) * | 2007-08-03 | 2008-04-09 | 中国铝业股份有限公司 | 一种铝电解槽用石墨化可湿润阴极炭块及其生产方法 |
RU2371523C1 (ru) * | 2008-06-23 | 2009-10-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Сибирский федеральный университет" | Композиционный материал для смачиваемого катода алюминиевого электролизера |
-
2010
- 2010-07-29 DE DE201010038669 patent/DE102010038669A1/de not_active Ceased
-
2011
- 2011-07-29 CA CA2805866A patent/CA2805866C/en active Active
- 2011-07-29 UA UAA201302500A patent/UA109019C2/uk unknown
- 2011-07-29 JP JP2013521157A patent/JP5714108B2/ja active Active
- 2011-07-29 WO PCT/EP2011/063082 patent/WO2012013772A1/de active Application Filing
- 2011-07-29 EP EP11743994.3A patent/EP2598675B1/de active Active
- 2011-07-29 RU RU2013108797/02A patent/RU2533066C2/ru active
- 2011-07-29 CN CN201180037314.3A patent/CN103038396B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012013772A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2533066C2 (ru) | 2014-11-20 |
UA109019C2 (uk) | 2015-07-10 |
CA2805866A1 (en) | 2012-02-02 |
JP2013532773A (ja) | 2013-08-19 |
JP5714108B2 (ja) | 2015-05-07 |
CA2805866C (en) | 2015-07-21 |
EP2598675B1 (de) | 2017-03-08 |
CN103038396A (zh) | 2013-04-10 |
WO2012013772A1 (de) | 2012-02-02 |
DE102010038669A1 (de) | 2012-02-02 |
CN103038396B (zh) | 2016-08-03 |
RU2013108797A (ru) | 2014-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2598675B1 (de) | Kathodenblock für eine aluminium-elektrolysezelle und ein verfahren zu seiner herstellung | |
DE1251962B (de) | Kathode fur eine Elektrolysezelle zur Herstellung von Aluminium und Verfahren zur Herstellung derselben | |
EP2576870B1 (de) | Kohlenstoffkörper, verfahren zur herstellung eines kohlenstoffkörpers und seine verwendung | |
DD295878B5 (de) | Verfahren zur Herstellung einer Soederberg-Elektrode | |
WO2017080661A1 (de) | Neues verfahren zur herstellung von graphitkörpern | |
DE3034359A1 (en) | Process for producing high-density,high-strength carbon and graphite material | |
EP2673396A2 (de) | Graphitierter kathodenblock mit einer abrasionsbeständigen oberfläche | |
EP2598674B1 (de) | Verfahren zum herstellen eines kathodenblocks für eine aluminium-elektrolysezelle | |
EP2809833B1 (de) | Verfahren zur herstellung eines kathodenblocks für eine aluminium-elektrolysezelle | |
EP2598673B1 (de) | Verfahren zur herstellung eines kathodenblocks für eine aluminium-elektrolysezelle | |
EP2673401A2 (de) | Oberflächenprofilierter graphit-kathodenblock mit einer abrasionsbeständigen oberfläche | |
WO2014091023A1 (de) | Seitenstein für eine wand in einer elektrolysezelle zur reduzierung von aluminum | |
EP0068518B1 (de) | Verfahren zur Herstellung von Kohlenstofformkörpern aus Koks ohne zusätzliches Bindemittel | |
EP2956573A1 (de) | Kathodenblock mit einer benetzbaren und abrasionsbeständigen oberfläche | |
AT208606B (de) | Fester Stromleiter und Verfahren zu seiner Herstellung | |
EP2748119B1 (de) | Titandiborid-granulate als erosionsschutz für kathoden | |
DE102011001834A1 (de) | Neuartige kombinierte graphitierte heterotype Kathode zur Gewinnung von Aluminium und deren graphitierter Kathodenhemmblock | |
AT210865B (de) | Verfahren zur Herstellung eines geformten Kohlekörpers | |
DE102016226122A1 (de) | Neuartiger Kathodenblock | |
WO2014060422A2 (de) | Kathodenblock mit trapezförmigem querschnitt | |
DE102012218958A1 (de) | Kathodenblock mit trapezförmigem Querschnitt | |
WO2012136509A1 (de) | Zur verwendung in einem druckschlickergussverfahren geeigneter schlicker | |
DE202011109452U1 (de) | Graphitelektrode | |
DE102012218959A1 (de) | Kathodenblock mit trapezförmigem Querschnitt |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20130228 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20160922 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 873606 Country of ref document: AT Kind code of ref document: T Effective date: 20170315 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502011011798 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170609 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: COBEX GMBH, DE Free format text: FORMER OWNER: SGL CARBON SE, 65201 WIESBADEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: TOKAI COBEX GMBH, DE Free format text: FORMER OWNER: SGL CARBON SE, 65201 WIESBADEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: SGL CFL CE GMBH, DE Free format text: FORMER OWNER: SGL CARBON SE, 65201 WIESBADEN, DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170608 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170710 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502011011798 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
26N | No opposition filed |
Effective date: 20171211 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20170731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170729 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170729 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170731 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 873606 Country of ref document: AT Kind code of ref document: T Effective date: 20170729 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170729 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: COBEX GMBH, DE Free format text: FORMER OWNER: SGL CFL CE GMBH, 86405 MEITINGEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: TOKAI COBEX GMBH, DE Free format text: FORMER OWNER: SGL CFL CE GMBH, 86405 MEITINGEN, DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20110729 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20190801 AND 20190807 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: CHAD Owner name: COBEX GMBH, DE Ref country code: NO Ref legal event code: CREP Representative=s name: PLOUGMANN VINGTOFT, POSTBOKS 1003 SENTRUM, 0104 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170308 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: CHAD Owner name: TOKAI COBEX GMBH, DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 502011011798 Country of ref document: DE Representative=s name: WSL PATENTANWAELTE PARTNERSCHAFT MBB, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502011011798 Country of ref document: DE Owner name: TOKAI COBEX GMBH, DE Free format text: FORMER OWNER: COBEX GMBH, 65189 WIESBADEN, DE |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230524 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IS Payment date: 20230615 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NO Payment date: 20230721 Year of fee payment: 13 Ref country code: GB Payment date: 20230720 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230725 Year of fee payment: 13 Ref country code: DE Payment date: 20230711 Year of fee payment: 13 |