CN100567579C - Be used to produce the scaler of crust for use of the electrolyzer of aluminium - Google Patents
Be used to produce the scaler of crust for use of the electrolyzer of aluminium Download PDFInfo
- Publication number
- CN100567579C CN100567579C CNB200580021263XA CN200580021263A CN100567579C CN 100567579 C CN100567579 C CN 100567579C CN B200580021263X A CNB200580021263X A CN B200580021263XA CN 200580021263 A CN200580021263 A CN 200580021263A CN 100567579 C CN100567579 C CN 100567579C
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- Prior art keywords
- scaler
- finger
- piercing member
- electrolyzer
- aluminum
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- 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
- C25C3/14—Devices for feeding or crust breaking
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- 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)
Abstract
The present invention relates to the scaler (40) of a piercing member (331) as taper, described piercing member can be used for by described piercing member along a translated axis line (T) to-and-fro movement, forms an opening in aluminum oxide in the dry method electrolyzer and the already solidified melt shell.Scaler according to the present invention (40) is characterised in that: it comprises a plurality of finger (42) that a reference axis (S) is arranged that center on, so that form a space (44) between described finger and described piercing member, wherein said reference axis (S) is used for consistent with described translated axis line (T) in use; And each finger (42) comprises at least one scraper component (43), and described scraper component forms projection to the direction of described piercing member (33).Can avoid forming an involucrum on the surface of described piercing member according to scaler of the present invention, described involucrum may block the member in the scaler.
Description
Technical field
[01] the present invention relates to by the electrolyzer facility of Hall-He Lu (Hall-H é roult) technology by the dry method electrolytic production of aluminum.It relates in particular to the driling unit of shell of the already solidified melt of described electrolyzer.
Background technology
[02] by the electrolyzing fused lasting variation that causes bath component in the operation of producing the electrolyzer of aluminium based on the molten intravital aluminum oxide of sodium aluminum fluoride of dry method.On the one hand, aluminum oxide is consumed by electrolytic reaction, and on the other hand, the quantity of melt and forming by time mechanism (m é canismessecondaires) is changed gradually, and described mechanism is as the sorption of the sodium aluminum fluoride component by cell wall or pass through the Decomposition of the fluorine component of anode effect.Therefore must add aluminum oxide and melt compound regularly, as sodium aluminum fluoride (Na
3AlF
6) or aluminum fluoride (AlF
3), so that the operating parameter of electrolyzer keeps stable.
[03] aluminum oxide and melt compound are introduced in the melt with Powdered usually.In order powder material to be introduced in the electrolysis melt, assemble one or more powder material dividers to electrolyzer, described divider links to each other with the driling unit of the aluminum oxide and the electrolytic solution shell that condenses, and the described aluminum oxide and the electrolytic solution shell that condenses cover bath surface when normally moving.Described driling unit generally includes a pressurized strut and a piercing member (often being called " taper ", " jumper bar " or " wedge falls "), and described piercing member is fixed on the end of this pressurized strut rod member.Described taper arranges vertically that usually it descends by actuating of pressurized strut and smashes described aluminum oxide and already solidified melt shell.Described crust breaking equipment also comprises a scaler usually, and it is designed to be used for eliminating the settling of already solidified melt, and described settling has the trend that is formed on the described taper.
[04] French Patent FR 2455093, FR 2487386 (corresponding U.S. Pat 4431491) that is proposed by Bi Xinie Aluminum group (Aluminium Pechiney) and FR 2527647 (corresponding U.S. Pat 4437964) have described the aluminum oxide timing supply arrangement of the electrolyzer that is used for producing aluminium.These equipment---known being called " crust breaking-dosimeter (piqueur-doseur) " when taper and dosimeter combination---comprise that aluminum oxide feedway and punctures the driling unit of aluminum oxide and already solidified melt shell.Described driling unit is equipped with a scaler, and this scaler closely surrounds described taper.
[05] yet, described solidified melt forms an involucrum (enveloppe) on described piercing member surface sometimes, described involucrum may block the described member in the described scaler.The applicant seeks in order to avoid the mode of this defective.
Summary of the invention
[06] the objective of the invention is to be used for the scaler of a piercing member (as taper (piqueur), jumper bar (plongeur) or the wedge that falls (pointerolle)), described piercing member can be used for by this piercing member along a translated axis line T to-and-fro movement, forms an opening in aluminum oxide in the dry method electrolyzer and the already solidified melt shell.
[07] according to scaler of the present invention, it is characterized in that, it comprises at least three finger of arranging around a reference axis S, so that between described finger and described piercing member, form a space, this space is called " removing " space, and wherein said reference axis is used for consistent with described translated axis line T in use; And each finger comprises at least one scraper component, and described scraper component forms projection to the direction of described piercing member.
[08] applicant's idea is: described scaler is decomposed into one group of separated scraper component; Reduce surface in contact with scaler; And described scraper component is arranged in a plurality of being mutually on the finger that angle ground separates.This scheme makes the described piercing member necessary power that spins off by limiting when melt shell between described scraper component and the described piercing member is piled up, avoid described piercing member to block.In addition, applicant's idea is: make described finger substantially away from the piercing member of described driling unit, be beneficial to the talus accumulation of melt shell above described scraper component, rather than insert and drop between described sleeve and the piercing member.The chip of described accumulation can be discharged at an easy rate by the space that the interval between the finger of described scaler forms.
[09] the present invention especially is suitable for producing the electrolyzer of aluminium.
[10] the present invention also aims to a driling unit, it is designed for the electrolyzer by the dry method electrolytic production of aluminum, and comprises a scaler of the present invention.
[11] the present invention also aims to one crust breaking-dosimeter, it is designed for the electrolyzer by the dry method electrolytic production of aluminum, and comprises a scaler of the present invention.
[12] the present invention also aims to a crust breaking and measuring apparatus, it is designed for the electrolyzer by the dry method electrolytic production of aluminum, and comprises a scaler of the present invention.
[13] another object of the present invention is to use scaler of the present invention in passing through the electrolyzer of dry method electrolytic production of aluminum.
Description of drawings
[14] hereinafter describe the present invention with reference to accompanying drawing.
[15] Fig. 1 simply illustrates from a design of vertical section observation and is used for local interior's view of the typical electrolyzer by the dry method electrolytic production of aluminum.
[16] Fig. 2 is the skeleton view of one preferred implementation of scaler according to the present invention.
[17] Fig. 3 is the side-view of scaler shown in Figure 2.
[18] Fig. 4 and Fig. 5 are the sectional views of the section of pointing out along Fig. 3 of Fig. 2 scaler.
[19] Fig. 6 is the skeleton view that the scaler of Fig. 2 is fixed in a driling unit end.
Embodiment
[20] as shown in Figure 1, an electrolyzer 1---it is used for by the dry method electrolysis is aluminum production by fused-salt electrolysis---comprising: a cell body 2; One or more anodes 3, it typically is the prebaked anode that carbonaceous material is made; With powder material feedway 20,30, described device is fixed on the upper structure 4 that places described cell body top usually.
[21] described cell body 2 comprises an inner cover (not shown) and a cathode assembly 5, and this cathode assembly forms a melting pan (creuset) in described cell body 2, and this melting pan is suitable for holding an electrolysis melt 7 and a liquid aluminium lamination 6 when described electrolyzer moves.Described anode 3 generally is partly to immerse in the described liquid electrolysis melt 7, and described electrolyzer Be Controlled, so that form aluminum oxide and already solidified melt shell 10 above described electrolysis melt.
[22] described powder material feedway 20,30 generally includes a powder material divider 20 and a driling unit 30.
[23] described powder material divider 20 typically comprises: a hopper 21, and it is designed for and holds a standby powder material; With a feeding trough 22, it is fixed on described feed hopper bottom and is designed for and transports powder material extremely near an opening 11 places in the described shell 10.
[24] described driling unit 30 comprises an actuator 31 and a piercing member 33 (being commonly referred to " taper ", " jumper bar " or " wedge falls "), described piercing member is fixed on the Rod end of actuator, and this actuator rod member typically is positioned at a protective case or sleeve 32.Described piercing member 33 is placed with usually: an opening of the free end 34 of this piercing member by being positioned at described protective case or sleeve 32 enters described driling unit 30 and breaks away from described driling unit.Described piercing member 33 allows by it along a translated axis line T to-and-fro movement, formation one opening 11 aluminum oxide and already solidified melt shell 10 in, described translated axis line vertical typically or with respect to vertical direction inclination is arranged slightly.The cross section of described piercing member 33 is circular typically.Described actuator 31 is a pneumatic actuator typically, as pneumatic cylinders.When one scaler 40 guarantees described piercing member to-and-fro movement, the cleaning of described piercing member.
[25] one powder material dividers can be connected to one or more definite crust breakers, or conversely, a crust breaker can be connected to one or more definite powder material dividers.Described electrolyzer often is equipped with the equipment that one or more collection have a powder material divider and a crust breaker.These equipment with title " crust breaking and feeding device " (English is called " Crustbreaking and FeedingDevice ") by known.
When [26] moving, by one or more driling units 30, in described shell 10, between the described anode 3, form (maybe may stay open) at least one opening 11, and described powder material joins in the described electrolysis melt 7 by this opening 11 when a plurality of opening (or as by at least one opening).
[27] comprise a plurality of finger 42 according to described scaler 40 of the present invention, these finger arrangement are around a reference axis S, and reference axis S is used for consistent with described translated axis line T during use.Described finger 42 is arranged to: vacate a space 44, it is called " removing (d é talonnage) " space, and this space is between described finger 42 and described piercing member 33.Each finger 42 comprises at least one scraper component 43, and described scraper component forms projection to the direction of described piercing member 33.
[28] Fig. 2 to Fig. 6 illustrates a preferred implementation of a scaler of the present invention.
[29] described scaler 40 of the present invention comprises at least three finger 42, and is preferably at least six finger.Typically between 6 and 10,6 and 10 are included the number of finger.Embodiments of the invention shown in Fig. 3 to Fig. 6 comprise six finger.
[30] the described removing space 44 between described finger 42 and the described piercing member 33---promptly, the spatial width E at interval between the internal surface 421 of described finger 42 and the outer surface 331 of described piercing member 33---advantageously greater than 10mm.
[31] length L 1 of described finger 42 is preferably greater than 100mm.
[32] described finger 42 is arranged to form each other a space 422,423, and this space is called " at interval ".
[33] cross section of described finger 42 advantageously its length L 1 at least 50% on be basic the same, so that on an equivalent length, keep the interval of one between the described finger 422,423, described interval is enough to discharge at an easy rate the chip of the electrolysis melt shell of being removed by described scraper component 43.Described finger 42 reference axis S preferably straight and that be parallel to described scaler.
[34] effectively discharge by the chip of the electrolysis melt shell that strikes off generation in order to allow, the spacing Cm between the hithermost point on the surface of adjacent finger described finger length L 1 at least 50% on be preferably greater than 10mm, and more preferably greater than 20mm.For the chip that helps electrolysis melt shell is discharged towards described scaler is outside, at the spacing C between the described adjacent finger preferably away from described axis S ground, promptly increasing between described scaler inside and outside, to form an opening, this opening is towards described outside expansion.In example shown in Figure 5, described spacing C increases between the inner end 425 of described finger and its outer end 426.Preferably, described finger 42 comprises an at least one flat first surface element 424 and a flat second surface element 424 ', described surface element is arranged to: the relative mutually and inclination of the described first surface element 424 of each finger and the second surface element of an adjacent finger 424 ' with being in angle, to form an opening, this opening enlarges towards the outside of described scaler.With respect to described reference axis S, it is spaced apart that described facing surfaces element 424,424 ' preferably is angle ground with one greater than 10 ° angle [alpha], to form an interval 422,423 between described finger, described interval is enough to allow the described chip that strikes off the electrolysis melt shell of generation to be discharged.
[35] the angular separation β of the center to center between the described finger is typically between 20 ° to 90 °.
[36] each scraper component 43 preferred arrangements is on described finger 42, and to vacate a space 45 between described scraper component 43 and described piercing member 33, this space is called " striking off the space ".More properly, each scraper component 43 comprises an end 431, and it is called " striking off end ", is positioned at one of the described axis S of distance and determines distance D 1 place, to reserve the described space of striking off.Described definite distance D 1 all is identical for all striking off end 431 advantageously.The described space 45 of striking off typically is included between the 1mm to 5mm, and endpoints thereof is included.
[37] the described distance D 1 of striking off is less than described removing space 44 (constant interval E in the embodiment shown in the corresponding diagram 3 to Fig. 6).Therefore, described scraper component 43 forms a projection, and this projection is towards a side of described piercing member 33.
[38] advantageously, each scraper component 43 is positioned at the free end 420 of each finger 42.
[39] according to a preferred implementation of the present invention, the described end 431 that strikes off adopts a recessed surface shape.On the direction of described axis S, this surperficial length L 2 is typically between between the 10mm to 50mm, and more typically is included between the 10mm to 30mm.The area on described recessed surface typically is included in 10 to 1000mm
2Between.Described recessed surface typically is parallel to the outer surface 331 of described piercing member 33, and promptly the shape of itself and described outer surface 331 is complementary.
[40] according to another embodiment of the present invention, the described shape of striking off end 431 employing one cusps or a knuckle.
[41] described finger 42 typically is fixed on the support part 41.Described scraper component 43 preferably is disposed in space D 3 places that the described support part 41 1 of distance is determined, this spacing equals 100mm at least.
[42] described scaler 40 is advantageously detachable, so that it can be changed, particularly under the situation of its damage or wearing and tearing.In this case, described support part 41 typically comprises mounting block 410,411, as is furnished with a hoop or a flange 410 of reach through hole 411.Described mounting block 410,411 for example makes and described scaler can be fixed on the driling unit that typically be fixed on the end 34 of a sleeve (or protective case) 32, described piercing member 33 stretches out from described sleeve (or protective case) 32.Described support part or main body 41 and described finger 42 be a single part typically.
[43] described finger 42 typically steel make, guaranteeing enough rigidity.
[44] Fig. 4 and Fig. 5 illustrate the different parameter of the scaler of the present invention's one preferred implementation, wherein, described finger is straight, and has an essentially identical cross section at its length L of at least 50% 1 the above finger piece, and the cross section of a piercing member 33 is circular.Among the described figure, R is the radius of described piercing member 33, and D1 is described definite spacing, and D2 is the distance between described axis S and described finger 42 central axis, and E is described removing space.
[45] can advantageously be assemblied in driling unit 30 according to described scaler 40 of the present invention, described driling unit is used in the electrolyzer by the dry method electrolytic production of aluminum, and described driling unit has one can be along axis T translation active piercing member.Especially, described scaler can advantageously be assemblied in crust breaking-dosimeter, and described crust breaking-dosimeter is designed for the electrolyzer of dry method electrolytic production of aluminum, and is as indicated above.Also can be assemblied in crust breaker and measuring apparatus according to described scaler 40 of the present invention---it is as by described in the patent EP 0716165 (corresponding U.S. Pat 6065867) of Bi Xinie Aluminum group.In described crust breaker and measuring apparatus, described piercing member comprises measurement component in addition, and as a thermopair, (it can be used as for example electrical pickoff to perhaps described piercing member as measurement component, be used for when its vertical motion, detect described member and enter the liquid electrolysis melt of contact).
Claims (18)
1. the scaler (40) of the piercing member (33) of driling unit (30), described piercing member can be used for by the to-and-fro movement of this piercing member (33) along a translated axis line (T), form an opening (11) in aluminum oxide in dry method electrolyzer (1) and the already solidified melt shell (10)
Described scaler is characterised in that, it comprises at least three finger (42) of arranging around a reference axis (S), so that between described finger (42) and described piercing member (33), form a space (44), this space is called " removing " space, and wherein said reference axis (S) is used for consistent with described translated axis line (T) in use; And each finger (42) comprises at least one scraper component (43), and described scraper component forms projection to the direction of described piercing member (33).
2. according to the described scaler of claim 1 (40), it is characterized in that the number of described finger (42) is included between 6 to 10, endpoints thereof is included.
3. according to the described scaler of claim 1 (40), it is characterized in that the length (L1) of described finger (42) is greater than 100mm.
4. require 1 described scaler (40) according to aforesaid right, it is characterized in that, the cross section of described finger (42) is essentially identical on its length of at least 50% (L1).
5. require 1 described scaler (40) according to aforesaid right, it is characterized in that, described finger (42) is straight and is parallel to the reference axis (S) of described scaler.
6. according to the described scaler of claim 1 (40), it is characterized in that, adjacent finger length (L1) at least 50% on, the spacing (Cm) between the hithermost point on the surface of described adjacent finger is greater than 10mm.
7. require 1 described scaler (40) according to aforesaid right, it is characterized in that, the spacing C between the described adjacent finger is along with increasing away from described reference axis (S), thereby forms an opening, and this opening enlarges towards the outside.
8. according to the described scaler of claim 7 (40), it is characterized in that, described finger (42) comprises an at least one first surface element (424) and a second surface element (424 '), described surface element all is flat and is arranged to: the described first surface element (424) of each finger and the second surface element (424 ') of an adjacent finger are faced and are in angle ground to tilt each other mutually, to form an opening, this opening enlarges towards the outside of described scaler.
9. according to the described scaler of claim 8 (40), it is characterized in that, described relatively reference axis (S), the described surface of facing mutually (424,424 ') spaced apart greater than 10 ° angle (α) with one with being angle.
10. require each described scaler (40) in 1 to 9 according to aforesaid right, it is characterized in that the removing space between described finger (42) and the described piercing member (33) is greater than 10mm.
11. require each described scaler (40) in 1 to 9 according to aforesaid right, it is characterized in that each scraper component (43) is positioned at the free end (420) of each finger (42).
12. require each described scaler (40) in 1 to 9 according to aforesaid right, it is characterized in that described finger (42) is fixed in a support part (41).
13., it is characterized in that described scraper component (43) is disposed in described support part (41) the one definite spacings (D3) of distance and locates according to the described scaler of claim 12 (40), this spacing equals 100mm at least.
14., it is characterized in that described support part (41) comprises mounting block (410,411) according to the described scaler of claim 12 (40).
15. be used for driling unit (30), it is characterized in that it comprises according to each described scaler (40) in the claim 1 to 14 by the electrolyzer of dry method electrolytic production of aluminum.
16. be used for crust breaking-dosimeter, it is characterized in that it comprises according to each described scaler (40) in the claim 1 to 14 by the electrolyzer of dry method electrolytic production of aluminum.
17. be used for crust breaking and measuring apparatus, it is characterized in that it comprises according to each described scaler (40) in the claim 1 to 14 by the electrolyzer of dry method electrolytic production of aluminum.
18. according to the application of each described scaler (40) in the claim 1 to 14, described scaler is used in one by in the electrolyzer of dry method electrolytic production of aluminum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0406953 | 2004-06-25 | ||
| FR0406953A FR2872176B1 (en) | 2004-06-25 | 2004-06-25 | SCRAPER OF A BODY OF A CRUST OF A BATH OF AN ELECTROLYSIS CELL INTENDED FOR THE PRODUCTION OF ALUMINUM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1977069A CN1977069A (en) | 2007-06-06 |
| CN100567579C true CN100567579C (en) | 2009-12-09 |
Family
ID=34947387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200580021263XA Expired - Fee Related CN100567579C (en) | 2004-06-25 | 2005-06-22 | Be used to produce the scaler of crust for use of the electrolyzer of aluminium |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20070246347A1 (en) |
| EP (1) | EP1774062B1 (en) |
| CN (1) | CN100567579C (en) |
| AR (1) | AR052761A1 (en) |
| AT (1) | ATE478979T1 (en) |
| AU (1) | AU2005266290B2 (en) |
| CA (1) | CA2570550A1 (en) |
| DE (1) | DE602005023169D1 (en) |
| FR (1) | FR2872176B1 (en) |
| WO (1) | WO2006010818A2 (en) |
| ZA (1) | ZA200700135B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7828462B2 (en) | 2006-04-10 | 2010-11-09 | Jensen Bradford B | Imitation candle with simulated lighted wick using external light source |
| CN101413137B (en) * | 2008-05-20 | 2010-08-04 | 许磊 | Scrape type crust breaking apparatus |
| FR3016898B1 (en) * | 2014-01-27 | 2017-08-04 | Rio Tinto Alcan Int Ltd | DEVICE FOR DRILLING A CRYOLITHARY BATH CRUSH POSSIBLE TO BE POSITIONED IN PERIPHERY OF AN ELECTROLYSIS TANK. |
| CN107497793B (en) * | 2017-09-30 | 2024-03-12 | 中冶赛迪技术研究中心有限公司 | Ultrasonic vibration cleaning device and method for aluminum groove crust-breaking hammer |
| FR3077018B1 (en) * | 2018-01-24 | 2020-01-24 | Rio Tinto Alcan International Limited | DRILLING DEVICE COMPRISING A TUBULAR SLEEVE FIXED TO A CYLINDER |
| CN112725838A (en) * | 2021-01-19 | 2021-04-30 | 黄文强 | Crust breaking device for electrolytic aluminum cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349231A (en) * | 1979-09-10 | 1982-09-14 | Swiss Aluminium Ltd. | Chisel alignment unit for a crust breaking facility |
| US4437964A (en) * | 1982-05-27 | 1984-03-20 | Aluminium Pechiney | Assembly for spot feeding alumina to an electrolytic tank for the production of aluminum |
| US6065867A (en) * | 1994-12-09 | 2000-05-23 | Aluminium Pechiney | Method and device for measuring the temperature and the level of the molten electrolysis bath in cells for aluminum production |
| CN2623704Y (en) * | 2003-06-13 | 2004-07-07 | 沈阳铝镁设计研究院 | Crust-breaking hammerhead |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2860522B1 (en) * | 2003-10-02 | 2006-01-13 | Pechiney Aluminium | METHOD AND SYSTEM FOR CONTROLLING THE ADDITION OF POWDERY MATERIALS IN THE BATH OF AN ELECTROLYSIS CELL INTENDED FOR THE PRODUCTION OF ALUMINUM |
| FR2884524B1 (en) * | 2005-04-19 | 2007-06-15 | Aluminium Pechiney Soc Par Act | DEVICE FOR CONTROLLING THE RUN OF A POINTEROLLE OF A SYSTEM FOR SUPPLYING AN ALUMINUM PRODUCTION ELECTROLYSIS CELL |
| US7497861B2 (en) * | 2006-01-30 | 2009-03-03 | Warsaw Orthopedic, Inc. | Chisel system for osteochondral implants and a surgical procedure involving same |
-
2004
- 2004-06-25 FR FR0406953A patent/FR2872176B1/en not_active Expired - Fee Related
-
2005
- 2005-05-20 AR ARP050102095A patent/AR052761A1/en unknown
- 2005-06-22 ZA ZA200700135A patent/ZA200700135B/en unknown
- 2005-06-22 DE DE602005023169T patent/DE602005023169D1/en active Active
- 2005-06-22 WO PCT/FR2005/001573 patent/WO2006010818A2/en active Application Filing
- 2005-06-22 CN CNB200580021263XA patent/CN100567579C/en not_active Expired - Fee Related
- 2005-06-22 EP EP05778797A patent/EP1774062B1/en not_active Not-in-force
- 2005-06-22 US US11/571,132 patent/US20070246347A1/en not_active Abandoned
- 2005-06-22 AT AT05778797T patent/ATE478979T1/en not_active IP Right Cessation
- 2005-06-22 CA CA002570550A patent/CA2570550A1/en not_active Abandoned
- 2005-06-22 AU AU2005266290A patent/AU2005266290B2/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349231A (en) * | 1979-09-10 | 1982-09-14 | Swiss Aluminium Ltd. | Chisel alignment unit for a crust breaking facility |
| US4437964A (en) * | 1982-05-27 | 1984-03-20 | Aluminium Pechiney | Assembly for spot feeding alumina to an electrolytic tank for the production of aluminum |
| US6065867A (en) * | 1994-12-09 | 2000-05-23 | Aluminium Pechiney | Method and device for measuring the temperature and the level of the molten electrolysis bath in cells for aluminum production |
| CN2623704Y (en) * | 2003-06-13 | 2004-07-07 | 沈阳铝镁设计研究院 | Crust-breaking hammerhead |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1774062B1 (en) | 2010-08-25 |
| FR2872176A1 (en) | 2005-12-30 |
| CN1977069A (en) | 2007-06-06 |
| EP1774062A2 (en) | 2007-04-18 |
| FR2872176B1 (en) | 2006-07-28 |
| ZA200700135B (en) | 2008-06-25 |
| DE602005023169D1 (en) | 2010-10-07 |
| US20070246347A1 (en) | 2007-10-25 |
| AR052761A1 (en) | 2007-04-04 |
| ATE478979T1 (en) | 2010-09-15 |
| CA2570550A1 (en) | 2006-02-02 |
| WO2006010818A3 (en) | 2006-10-05 |
| AU2005266290B2 (en) | 2009-12-24 |
| WO2006010818A2 (en) | 2006-02-02 |
| AU2005266290A1 (en) | 2006-02-02 |
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