AU2005244546B8 - Device and method for careful separation of anode blocks from their anode rods - Google Patents
Device and method for careful separation of anode blocks from their anode rods Download PDFInfo
- Publication number
- AU2005244546B8 AU2005244546B8 AU2005244546A AU2005244546A AU2005244546B8 AU 2005244546 B8 AU2005244546 B8 AU 2005244546B8 AU 2005244546 A AU2005244546 A AU 2005244546A AU 2005244546 A AU2005244546 A AU 2005244546A AU 2005244546 B8 AU2005244546 B8 AU 2005244546B8
- Authority
- AU
- Australia
- Prior art keywords
- anode
- fork
- impact
- yoke
- mass body
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 12
- 238000000926 separation method Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 1
- 239000002008 calcined petroleum coke Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
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)
- Manufacture And Refinement Of Metals (AREA)
Description
AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Applicant (s): Outokumpu Technology Oy Invention Title: DEVICE AND METHOD FOR CAREFUL SEPARATION OF ANODE BLOCKS FROM THEIR ANODE RODS The following statement is a full description of this invention, including the best method for performing it know to me/us: -2 Device for separation of anode blocks from their anode rods Description: 5 The invention is directed to a device for the separation of anode blocks from their anode rods in the line of molten phase electrolysis for the production of aluminium. During that operation the anode blocks are 10 suspended with their fastening holes formed in the upper side by means of annular gap filling metal bushes to their bottom stub-like anode rod ends that have been formed to a yoke. To prepare anode blocks for their use in molten 15 phase electrolysis for the production of aluminium the anode blocks have to be firmly joined to power supply rods and/or the so-called anode rods. To that end the bottom ends of the anode rods which mostly have the form of a yoke with two, three or four adjacently arranged rod ends 20 are introduced from above into correspondingly pre-shaped recesses of the anode block and the remaining gaps and/or cavities in the recesses are then filled with molten iron. During that operation bushes are formed around the anode rod ends - also known as stubs - which ensure not only 25 mechanical stability of the connection between anode rod/anode block but also a good electric conductivity from the anode rod to the anode block. After solidification of the cast metal a firm bonding is established between the bush and the anode rod end as well as between the bush and 30 the anode block. These anode blocks which are produced in so called anode plants from calcined petroleum coke and normally pitch as binder in vibrating compactors by compaction of grainy raw materials and which are then 35 baked feature very large dimensions and a correspondingly high weight. Reference is made in this respect to e.g. the catalogue 10-715e published by KHD Humboldt Wedag AG H:\Linda\Keep\spec\P59227.doc 15/12/05 - 3 showing photographs of new and not yet consumed anode blocks on pages 2 and 3. After anode consumption anode butts and the bushes remain at the anode rods which have to be removed 5 from the bottom anode rod ends normally by cracking off or withdrawing before a new anode block is fastened to the anode rod. In case imperfections occur when moulding the iron bushes it may become necessary to separate the 10 properly speaking serviceable anode block from its anode rod. If withdrawal presses known so far were used for that separation process, i.e. for withdrawing anode butts and bushes from the anode rods by the application of high withdrawing forces, the actually usable anode block would 15 in an unwanted manner be damaged or broken completely and its reuse at any rate become impossible. The problem to be solved by the invention is to create a device by which not yet consumed anode blocks can be mechanically separated from the yoke ends of their 20 anode rods after the occurrence of imperfect bushes, i.e. so that both the anode block and the anode rod each remain undamaged and can be used again. The separation of anode blocks from their anode rod yoke end is achieved according to the invention by 25 means of a device with an impact fork featuring fork prongs which can be introduced into the gaps between the anode rod yoke and the upper side of the anode block suspended from the yoke. The fork prongs are arranged at the bottom side of at least one impact fork mass body 30 which can be moved vertically upward and downward with a certain stroke above the anode rod yoke. This impact stroke of the impact fork corresponds to the distance between the fork prongs and the yoke bottom side (bottom position of the impact fork) and/or the distance between 35 the upper side of the yoke and the bottom side of the impact fork mass body (top position of the impact fork). The impact stroke length is preferably adjusted such that H:\Linda\Keep\spec\P59227.doc 15/12/05 - 4 upon the downward stroke the fork prongs just do not touch the upper side of the anode block suspended from the anode rod yoke. In an embodiment the impact fork is periodically 5 lifted by the impact stroke length mentioned above with the aid of a lifting cylinder of the device according to the invention and dropped by the effect of gravity. During the upward movement the impact fork strikes the anode rod yoke from below and during the downward movement 10 from above while the anode block remains positioned on the base formed as support of the device according to the invention. Following a specified number of impact strokes and/or load changes the stubs of the anode rod yoke are loosened in the fastening holes of the anode block. 15 During this loosening procedure they project more and more from the fastening holes of the anode block until the anode rod with its yoke which was no more than loosely retained during that operation has been completely separated from the anode block so that both the anode rod 20 and, in particular, the anode block that remain undamaged can be used again after removal of the metal bushes. In a further embodiment, there is provided a method for the separation of anode blocks from their anode rods in the line of molten phase electrolysis for the 25 production of aluminium with a device according to any of the preceding claims, wherein the anode blocks are suspended with their fastening holes formed on the upper side by means of annual gap filling metal bushes from bottom stub-like anode-rod ends that have been formed to a 30 yoke, the method comprising: an impact fork engaging with its bottom prongs in gaps between the anode rod yoke and the upper side of anode block, wherein the fork prongs are arranged at a 23393131 (GHMatters) 19A08/10 - 4a bottom side of at least one impact fork mass body which can be moved upward and downward above the anode rod yoke; and the impact fork periodically moving up and down 5 to strike the anode rod yoke during an upward stroke from below and during a downward stroke from above. The invention and its further features and advantages are explained in more detail by the typical embodiment shown schematically in the figures. The 10 figures show the following: Fig. 1 the vertical section of the device according to the invention along line B-B in Fig. 2, Fig. 2 a vertical section along line A-A in Fig. 1 and is Fig. 3 the section of Fig. 2 in a position of the anode rod yoke which has already been separated from the anode block suspended from it. Fig. 1 shows an anode block 10 with three fastening holes formed in its upper side in which 20 correspondingly three stubs 11, 12, 13 of the bottom end of an anode rod 15 formed to a yoke 14 have been introduced. The annular-shaped gaps between the stubs and 23393131 (GHMatters) 19/08/10 - 5 the fastening holes have been filled with molten iron to obtain metal bushes 16. In case the metal bushes 16 are imperfect the device according to the invention offers the possibility to have the anode block 10 carefully separated 5 from the anode rod yoke 14. The device according to the invention features a frame 17 with a lower base 18 and an upper cross beam 19. Anode 10 with its anode rod 15 is placed on base 18. An impact fork that can be moved upward and downward in the 10 device engages with its two bottom prongs 20, 21 shown in the typical configuration in the gaps between yoke 14 and the upper side of anode block 10. The fork prongs 20, 21 have been arranged at the bottom side of an impact fork mass body 22 which can be moved upward and downward above 15 the anode rod yoke 14 by a lifting cylinder 23 engaging the upper side of the impact fork mass body 22 which cylinder has been linked with its upper end to the top cross beam 19 of the machine frame 17. This means that the impact fork can be periodically lifted by means of the 20 lifting cylinder and the impact fork dropped simply by gravity after every lifting cycle. During that operation impact stroke 24 of the impact fork corresponds to the distance between fork prongs 20, 21 and the underside of yoke 14 (bottom 25 position of the impact fork) and/or the distance between the upper side of the yoke 14 and the bottom side of the impact fork mass body 22 (top position of the impact fork as shown in Figs. 1 to 3). In other words, the impact fork strikes anode rod yoke 14 during the upward stroke 30 from below and during the downward stroke from above. The impact intensity of lifting cylinder 23 can even be adjusted such that the impact intensity of the impact fork is greater during the upward stroke than during the downward stroke. 35 At any rate stubs 11, 12, 13 are loosened in their fastening holes after a specific number of load changes, yoke 14 projects more and more from anode block H:\Linda\Keep\spec\P59227.doc 15/12/05 -6 10 until as shown in Fig. 3 anode rod 15 with yoke 14 and bushes 16 have been completely separated from the anode block that remained undamaged. The anode block 10 placed on base 18 is not lifted during that operation. 5 Fig. 1 shows in addition that the impact fork mass body 22 is vertically guided in machine frame 17, e.g. along roller guides 25, 26. The impact fork mass body 22 features a central passage by which it encompasses anode rod 15. Furthermore, swivelling clamps 27 for 10 loosely enclosing, i.e. for loosely retaining anode rod 15, have been linked to upper cross-beam 19 of machine frame 17. In the claims which follow and in the preceding description of the invention, except where the context 15 requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further 20 features in various embodiments of the invention. It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia 25 or any other country. H:\Linda\Keep\spec\P59227.doc 15/12/05
Claims (12)
1. A device for the separation of anode blocks from anode rods, the anode blocks being suspended from an anode 5 rod yoke, the device comprising: an impact fork comprising fork prongs for engaging gaps between the anode rod yoke and an upper side of the anode block, the fork prongs being arranged at a bottom side 10 of at least one impact fork mass body which can be moved upward and downward above the anode rod yoke, and wherein an impact stroke of the impact fork corresponds to a distance between the fork prongs and an underside of the yoke and/or a distance between an upper side of the 15 yoke and the bottom side of the impact fork mass body.
2. A device according to claim 1, wherein the device comprises a base on which the anode block including the anode rod can be placed. 20
3. A device according to claim 1 or 2, wherein at least one impact fork mass body is guided along vertical guide units of a machine frame. 25
4. A device according to any one of the preceding claims, wherein a lifting cylinder acts at the upper side of the impact fork mass body which has been linked with its top end to an upper cross beam of machine frame and by which the impact fork can be periodically lifted, whereby 30 following lifting cycles, the impact fork is dropped by the effect of gravity.
5. A device according to any one of the preceding claims, wherein swivelling clamps for loosely retaining 35 anode rod are linked to the upper cross beam of machine frame. 23393131 (GHMatters) 19/08110 -8
6. A device according to any one of the preceding claims wherein the impact fork mass body arranged above the anode rod yoke comprises a passage by which it encompasses the anode rod. 5
7. A method for the separation of anode blocks from their anode rods in the line of molten phase electrolysis for the production of aluminium with a device according to any of the preceding claims, wherein the anode blocks are 10 suspended with their fastening holes formed on the upper side by means of annual gap filling metal bushes from bottom stub-like anode-rod ends that have been formed to the yoke, the method comprising: an impact fork engaging with its bottom prongs in 15 gaps between the anode rod yoke and the upper side of anode block, wherein the fork prongs are arranged at a bottom side of at least one impact fork mass body which can be moved upward and downward above the anode rod yoke; and 20 the impact fork periodically moving up and down to strike the anode rod yoke during an upward stroke from below and during a downward stroke from above.
8. A method according to claim 7, wherein the impact 25 stroke of the impact fork corresponds to the distance between the fork prongs and the underside of the yoke and/or the distance between the upper side of the yoke and the bottom side of the impact fork mass body. 30
9. A method according to claim 7 or 8, wherein a lifting cylinder acts at the upper side of the impact fork mass body which has been linked with its top end to an upper cross beam of machine frame and by which the impact fork is periodically lifted, such that following the 35 lifting cycles, the impact fork is dropped by effect of gravity. 23393131 (GHMatters) 19/08/10 -9
10. A method according to claim 9, wherein the impact intensity of the lifting cylinder and, consequently, of the impact fork is greater during the upward stroke than during the downward stroke. 5
11. A device as claimed in claim 1 substantially as herein described with reference to the accompanying drawings. 10
12. A method as claimed in claim 7 substantially as herein described with reference to the accompanying drawings. 23393131 (GHMatters) 19/08/10
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410060823 DE102004060823B4 (en) | 2004-12-17 | 2004-12-17 | Device for gentle separation of block anodes from their anode rods |
| DE102004060823.7 | 2004-12-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU2005244546A1 AU2005244546A1 (en) | 2006-07-06 |
| AU2005244546B2 AU2005244546B2 (en) | 2010-10-28 |
| AU2005244546B8 true AU2005244546B8 (en) | 2011-02-17 |
Family
ID=36128624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2005244546A Ceased AU2005244546B8 (en) | 2004-12-17 | 2005-12-15 | Device and method for careful separation of anode blocks from their anode rods |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1672099B1 (en) |
| AU (1) | AU2005244546B8 (en) |
| DE (1) | DE102004060823B4 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2894988B1 (en) * | 2005-12-16 | 2008-01-18 | Ecl Soc Par Actions Simplifiee | METHOD FOR REMOVING THE REMOVAL OF ACRYLIC ANODES FROM WASTE ANODES FROM IGNEE ELECTROLYSIS SERIES |
| CN103691639A (en) * | 2013-12-26 | 2014-04-02 | 湖南创元新材料有限公司 | Method for dipping anode yoke of anode guide rod assembly into graphite |
| CN104988539A (en) * | 2015-07-20 | 2015-10-21 | 太原三众科技有限公司 | Side welding I-beam type inward-hooking-free dual-anode steel claw enabling currents to be distributed evenly |
| CN108070879B (en) * | 2017-11-29 | 2019-08-02 | 石文科 | A kind of gripper frame of aluminium cell |
| GB2569382A (en) * | 2017-12-18 | 2019-06-19 | Dubai Aluminium Pjsc | Anode yoke, anode hanger and anode assembly for a Hall-Heroult cell |
| CN111453608B (en) * | 2019-10-30 | 2022-07-12 | 国家电投集团黄河上游水电开发有限责任公司 | Aluminum anode steel claw body erecting hanger |
| EP4206362A1 (en) * | 2021-12-29 | 2023-07-05 | Dubai Aluminium PJSC | Method and installation for the maintenance of an anode yoke of a hall-héroult cell |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604071A (en) * | 1950-04-07 | 1952-07-22 | Chambersburg Eng Co | Drop hammer of the gravity type |
| NL134536C (en) * | 1968-09-19 | |||
| US4007533A (en) * | 1975-11-24 | 1977-02-15 | Jervis B. Webb Company | Apparatus for stripping an anode block from an anode assembly |
| DE2832520C2 (en) * | 1978-07-25 | 1986-03-13 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Device for removing the residual anodes from anode rods |
| DE4128522A1 (en) * | 1991-08-28 | 1993-03-04 | Westfalia Becorit Ind Tech | Appts. for removing residual anode from anode nipple supports - has stripper arms which support underside of anode nipple support and stripper plates which grip around anode nipples |
| DE4410599A1 (en) * | 1994-03-26 | 1995-09-28 | Scharf Westfalia Maschinenfabr | Residue removal from anode bar of aluminium prodn.cell |
-
2004
- 2004-12-17 DE DE200410060823 patent/DE102004060823B4/en not_active Expired - Fee Related
-
2005
- 2005-12-14 EP EP20050027331 patent/EP1672099B1/en active Active
- 2005-12-15 AU AU2005244546A patent/AU2005244546B8/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005244546B2 (en) | 2010-10-28 |
| EP1672099B1 (en) | 2013-05-01 |
| EP1672099A3 (en) | 2008-07-09 |
| DE102004060823B4 (en) | 2007-10-04 |
| DE102004060823A1 (en) | 2006-06-29 |
| EP1672099A2 (en) | 2006-06-21 |
| AU2005244546A1 (en) | 2006-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TH | Corrigenda |
Free format text: IN VOL 24, NO 43, PAGE(S) 4967 UNDER THE HEADING APPLICATIONS ACCEPTED - NAME INDEX UNDER THE NAME OUTOTEC OYJ, APPLICATION NO. 2005244546, UNDER INID (54) CORRECT THE TITLE TO READ DEVICE AND METHOD FOR CAREFUL SEPARATION OF ANODE BLOCKS FROM THEIR ANODE RODS |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| HB | Alteration of name in register |
Owner name: METSO OUTOTEC OYJ Free format text: FORMER NAME(S): OUTOTEC OYJ |
|
| PC | Assignment registered |
Owner name: REEL GMBH Free format text: FORMER OWNER(S): METSO OUTOTEC OYJ |