CA2856778C - Hood panel for aluminum smelter - Google Patents
Hood panel for aluminum smelter Download PDFInfo
- Publication number
- CA2856778C CA2856778C CA2856778A CA2856778A CA2856778C CA 2856778 C CA2856778 C CA 2856778C CA 2856778 A CA2856778 A CA 2856778A CA 2856778 A CA2856778 A CA 2856778A CA 2856778 C CA2856778 C CA 2856778C
- Authority
- CA
- Canada
- Prior art keywords
- hood panel
- aluminum
- panel
- insulator
- edge
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/22—Collecting emitted gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Superstructure Of Vehicle (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The hood panel generally has : a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape; a handle mounted to an outer face of the rectangular shaped panel member; and an insulator edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area. The hood panel can be recycled by immerging it into the molten aluminum of the smelter.
Description
HOOD PANEL FOR ALUMINUM SMELTER
FIELD
This specification generally relate to the field of aluminum production.
BACKGROUND
.. Aluminum smelters are used to transform alumina into liquid aluminum by the Hall-Heroult process, requiring large quantities of electricity. The aluminum smelter typically has a large number of cells, often referred to as pots, in which this process takes place.
Removable hood panels are used to both i) direct fumes and the like into a vent while the process takes place and ii) selectively provide access to the cells when required.
The hood panels have a limited lifespan. For instance, it can occur once in a while that the process produces a chimney, exposing a given one of the hood panels to the liquid aluminum in a manner which can entrain destruction of the hood panel. Moreover, even if a given hood panel has escaped the voracious chimneys for, say, three years of aluminum production, its regular handling during that time can often have resulted in wearing it down to a point where .. it is better to replace it.
While known hood panels were satisfactory to a certain degree, there remained room for improvement. For instance, it was desired to recycle the aluminum of the hood panel but the amount of time associated to disassembling non-recyclable components was considered inconvenient.
SUMMARY
The instant disclosure describes embodiments which can facilitate handling of the hood panels. On one front, a hood panel is described which is made in such a manner that it can be integrally recycled by immerging into molten aluminum directly in the plant, without requiring removal of components beforehand. On another front, a hood panel having .. chamfered lateral edges is described which can be more easy to correctly position adjacent another hood panel.
Date Recue/Date Received 2020-12-02
FIELD
This specification generally relate to the field of aluminum production.
BACKGROUND
.. Aluminum smelters are used to transform alumina into liquid aluminum by the Hall-Heroult process, requiring large quantities of electricity. The aluminum smelter typically has a large number of cells, often referred to as pots, in which this process takes place.
Removable hood panels are used to both i) direct fumes and the like into a vent while the process takes place and ii) selectively provide access to the cells when required.
The hood panels have a limited lifespan. For instance, it can occur once in a while that the process produces a chimney, exposing a given one of the hood panels to the liquid aluminum in a manner which can entrain destruction of the hood panel. Moreover, even if a given hood panel has escaped the voracious chimneys for, say, three years of aluminum production, its regular handling during that time can often have resulted in wearing it down to a point where .. it is better to replace it.
While known hood panels were satisfactory to a certain degree, there remained room for improvement. For instance, it was desired to recycle the aluminum of the hood panel but the amount of time associated to disassembling non-recyclable components was considered inconvenient.
SUMMARY
The instant disclosure describes embodiments which can facilitate handling of the hood panels. On one front, a hood panel is described which is made in such a manner that it can be integrally recycled by immerging into molten aluminum directly in the plant, without requiring removal of components beforehand. On another front, a hood panel having .. chamfered lateral edges is described which can be more easy to correctly position adjacent another hood panel.
Date Recue/Date Received 2020-12-02
- 2 -In accordance with one aspect, there is provided a hood panel for an aluminum smelter, the hood panel having : a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape, the .. lateral edges of the body having a sealing face extending normal to the panel member for snug sealing abutment against the corresponding sealing face of an adjacent hood panel, the sealing face leading from the panel member to a chamfer face, the chamfer face sloping toward the opposite edge; a handle made of wood, mounted to an outer face of the rectangular shaped panel member; and an insulator edge assembly having a joint plate made of aluminum mounted to the body and projecting therefrom, the joint plate being electrically partitioned from the body by insulator bushings made of a polymer material;
wherein the wood and the polymer material are combustible and non-contaminating when immerged into molten aluminum to allow integrally recycling the hood panel by immersion into molten aluminum without disassembling the insulator edge nor the handle.
.. In accordance with another aspect, there is provided a hood panel for an aluminum smelter, the hood panel having : a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape; a handle mounted to an outer face of the rectangular shaped panel member; and an insulator .. edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
In accordance with another aspect, there is provided a method of using a hood panel with an aluminum smelter, the method comprising : operating the aluminum smelter for a given period of time while maintaining the hood panel in snug abutment against a corresponding cell portion of the smelter while i) directing fumes towards a vent of the smelter and ii) allowing selective access to the cell of the smelter by temporary removal from the snug abutment; and subsequently to the given period of time, removing the hood panel from the snug abutment against the cell portion and immerging the hood panel into molten aluminum in the smelter.
wherein the wood and the polymer material are combustible and non-contaminating when immerged into molten aluminum to allow integrally recycling the hood panel by immersion into molten aluminum without disassembling the insulator edge nor the handle.
.. In accordance with another aspect, there is provided a hood panel for an aluminum smelter, the hood panel having : a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape; a handle mounted to an outer face of the rectangular shaped panel member; and an insulator .. edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
In accordance with another aspect, there is provided a method of using a hood panel with an aluminum smelter, the method comprising : operating the aluminum smelter for a given period of time while maintaining the hood panel in snug abutment against a corresponding cell portion of the smelter while i) directing fumes towards a vent of the smelter and ii) allowing selective access to the cell of the smelter by temporary removal from the snug abutment; and subsequently to the given period of time, removing the hood panel from the snug abutment against the cell portion and immerging the hood panel into molten aluminum in the smelter.
- 3 -Many further features and combinations thereof concerning the present improvements will appear to those skilled in the art following a reading of the instant disclosure.
DESCRIPTION OF THE FIGURES
In the figures, Fig. 1 is an oblique view of an example of a hood panel, with Fig. 1A being a schematic cross-section taken along cross-section lines 1A-1A therein;
Figs. 2A and 2B are bottom edge views of two adjacent hood panels being positioned next to each other;
Fig. 3 is a side view, exploded, showing the construction of a lower edge portion of the hood panel.
DETAILED DESCRIPTION
Fig. 1 shows an example of a hood panel 10. The hood panel 10 generally has a body 12 which includes a panel member 14 having a rectangular shape and which is structurally supported by a frame structure 16 to which it is mounted. A handle 18 is mounted to the panel member 14, for handling. The hood panel 10 can be said to have two opposite lateral edges 20, a top edge 22 and a bottom edge 24.
A typical operation position involves positioning the hood panel 10 against the smelter in a manner that the top and bottom edges 22, 24 are aligned with the horizontal, with the panel member 14 being inclined off the vertical to a certain extent. In the operation position, the handle 18 is externally accessible by a user and therefore an inner face 26 of the hood panel 10 can be defined as being exposed to the gases with an opposite outer face 28 receiving the handle 18. When so positioned for operation, the hood panel 10 can be sealed along its entire periphery as follows : the top edge 22 comes into snug abutment against the structure of the smelter, the lateral edges 22, 24 come into snug abutment against the lateral edges of adjacent ones of the hood panels or, ultimately, against the structure of the smelter, and the bottom edge 24 rests against a support area.
DESCRIPTION OF THE FIGURES
In the figures, Fig. 1 is an oblique view of an example of a hood panel, with Fig. 1A being a schematic cross-section taken along cross-section lines 1A-1A therein;
Figs. 2A and 2B are bottom edge views of two adjacent hood panels being positioned next to each other;
Fig. 3 is a side view, exploded, showing the construction of a lower edge portion of the hood panel.
DETAILED DESCRIPTION
Fig. 1 shows an example of a hood panel 10. The hood panel 10 generally has a body 12 which includes a panel member 14 having a rectangular shape and which is structurally supported by a frame structure 16 to which it is mounted. A handle 18 is mounted to the panel member 14, for handling. The hood panel 10 can be said to have two opposite lateral edges 20, a top edge 22 and a bottom edge 24.
A typical operation position involves positioning the hood panel 10 against the smelter in a manner that the top and bottom edges 22, 24 are aligned with the horizontal, with the panel member 14 being inclined off the vertical to a certain extent. In the operation position, the handle 18 is externally accessible by a user and therefore an inner face 26 of the hood panel 10 can be defined as being exposed to the gases with an opposite outer face 28 receiving the handle 18. When so positioned for operation, the hood panel 10 can be sealed along its entire periphery as follows : the top edge 22 comes into snug abutment against the structure of the smelter, the lateral edges 22, 24 come into snug abutment against the lateral edges of adjacent ones of the hood panels or, ultimately, against the structure of the smelter, and the bottom edge 24 rests against a support area.
- 4 -To favour ease of recycling of the hood panel 10, aluminum components can be used. In this specific embodiment, the frame structure 16 is provided in the form of a number of components formed as tubular aluminum extrusions to which the panel member 14, provided here in the form of a single sheet of aluminum, can be fastened to by aluminum rivets 32.
Depending on the embodiment, the frame structure 16 can be adapted in order to provide satisfactory structure at satisfactory costs. The frame structure 16 is intended to resist handling of the hood panel 10 by an operator which can manipulate its weight via the handle 18. The handle 18 is thus also designed to provide sufficient structural resistance to its intended conditions of use.
In the illustrated embodiment, the same shape of tubular aluminum extrusion was used along all the edges 20, 22 and 24 for the sake of convenience, the shape of which is schematized in Fig. 1A. As shown in Fig. 1A, the frame structure 16 provides a combined face shape at the lateral edge 20 : a sealing face 34 is provided in the form of a face extending normal to the panel member 14 and inwardly therefrom, the sealing face 34 extending from the panel member 14 to a chamfer face 36 which slopes towards the other edge 38. In this embodiment, the tips of the tubular aluminum extrusions forming the frame structure are cut at 45 and joined to one another for additional structural resistance.
Turning to Figs. 2A and 2B, the particular lateral edge shape of the frame structure 16 can be understood to provide two functions : firstly, the chamfer face 36 assists the operator in correctly positioning the hood panel 10 adjacent to another hood panel 10' as the chamfer face 36 can be placed into abutment against the adjacent hood panel 10' and slide thereagainst until it slips off the sealing face 34 and the hood panel 10 falls is automatically dropped at the correct location; and secondly, the once the hood panel 10 has fallen into its correct position, the two facing sealing faces 34, 34' form a seal 40 which extends along a given thickness and which satisfactorily impede circulation of fumes or gasses thereacross.
During a typical smelting operation a difference of potential is applied between the top edge 22 and the ground or support area. Even though the difference of potential is relatively small (e.g. 4 V), the passage of electrical current across the electrically conductive aluminum components, between the top edge 22 and the bottom edge 24, is typically undesired, especially given the often relatively high amperage involved in smelting which can otherwise
Depending on the embodiment, the frame structure 16 can be adapted in order to provide satisfactory structure at satisfactory costs. The frame structure 16 is intended to resist handling of the hood panel 10 by an operator which can manipulate its weight via the handle 18. The handle 18 is thus also designed to provide sufficient structural resistance to its intended conditions of use.
In the illustrated embodiment, the same shape of tubular aluminum extrusion was used along all the edges 20, 22 and 24 for the sake of convenience, the shape of which is schematized in Fig. 1A. As shown in Fig. 1A, the frame structure 16 provides a combined face shape at the lateral edge 20 : a sealing face 34 is provided in the form of a face extending normal to the panel member 14 and inwardly therefrom, the sealing face 34 extending from the panel member 14 to a chamfer face 36 which slopes towards the other edge 38. In this embodiment, the tips of the tubular aluminum extrusions forming the frame structure are cut at 45 and joined to one another for additional structural resistance.
Turning to Figs. 2A and 2B, the particular lateral edge shape of the frame structure 16 can be understood to provide two functions : firstly, the chamfer face 36 assists the operator in correctly positioning the hood panel 10 adjacent to another hood panel 10' as the chamfer face 36 can be placed into abutment against the adjacent hood panel 10' and slide thereagainst until it slips off the sealing face 34 and the hood panel 10 falls is automatically dropped at the correct location; and secondly, the once the hood panel 10 has fallen into its correct position, the two facing sealing faces 34, 34' form a seal 40 which extends along a given thickness and which satisfactorily impede circulation of fumes or gasses thereacross.
During a typical smelting operation a difference of potential is applied between the top edge 22 and the ground or support area. Even though the difference of potential is relatively small (e.g. 4 V), the passage of electrical current across the electrically conductive aluminum components, between the top edge 22 and the bottom edge 24, is typically undesired, especially given the often relatively high amperage involved in smelting which can otherwise
- 5 -cause heating of the bottom edge 24 and sparking between the bottom edge 24 and the resting area. In this embodiment, the hood panel 10 is provided with an insulator 42 between the top edge 22 and the bottom edge 24 to avoid electrical conduction thereacross. More specifically, the electrical insulator 42 is integrated into an insulator edge assembly 44 which is mounted to the bottom edge 24 of the body 12.
Shown in greater detail in Fig. 3, the specific embodiment of the insulator edge assembly 44 shown here has a joint plate 46 which protrudes longitudinally from the body 12 of the hood panel 10 as an extension of and parallel to the panel member 14. In the embodiment of Fig.
3, the panel member 14 extends longitudinally from the body 12 of the hood panel 10 so as to form an extension 50. This joint plate 46 is fastened to the panel member 14 by a plurality of rivets 48. In this particular case, a reinforcement plate 52 is also used to provide additional structure to the panel member 14. Insulator bushings 54 are used between, on the one hand, the rivet 48, rivet washer 56 and panel member 14 and, on the other hand, the joint plate 46, to form an electrical insulator therebetween.
In this specific case, the bushings 54 were of a polymer material and were provided in a sufficiently small quantity that leaving them with the hood panel 10 when immerging the hood panel 10 into molten aluminum for recycling was not considered to significantly contaminate the molten aluminum and thus leave the molten aluminum suitable for its future intended use. Similarly, the handle 18 can be made of wood, a relatively low cost material, which was found to suitably combust when immersed into molten aluminum in a manner to avoid contaminating the molten aluminum. Accordingly, the entire hood panel 10 was found suitable to be recyclable integrally by immerging into molten aluminum directly at the production plant without requiring disassembly of neither the handle 18 nor the insulator edge assembly 44.
As can be understood, the examples described above and illustrated are intended to be exemplary only. For instance, it will be understood that various alternate embodiments of frame structure 16, panel member shape, etc., can be used without significantly affecting the working of the hood panel 10 or in order to adapt it to specific embodiments.
In some embodiments, it can be found more suitable to use a handle 18 or an insulator edge assembly 44 which is dissassemblable rather than consumable by the molten aluminum.
Shown in greater detail in Fig. 3, the specific embodiment of the insulator edge assembly 44 shown here has a joint plate 46 which protrudes longitudinally from the body 12 of the hood panel 10 as an extension of and parallel to the panel member 14. In the embodiment of Fig.
3, the panel member 14 extends longitudinally from the body 12 of the hood panel 10 so as to form an extension 50. This joint plate 46 is fastened to the panel member 14 by a plurality of rivets 48. In this particular case, a reinforcement plate 52 is also used to provide additional structure to the panel member 14. Insulator bushings 54 are used between, on the one hand, the rivet 48, rivet washer 56 and panel member 14 and, on the other hand, the joint plate 46, to form an electrical insulator therebetween.
In this specific case, the bushings 54 were of a polymer material and were provided in a sufficiently small quantity that leaving them with the hood panel 10 when immerging the hood panel 10 into molten aluminum for recycling was not considered to significantly contaminate the molten aluminum and thus leave the molten aluminum suitable for its future intended use. Similarly, the handle 18 can be made of wood, a relatively low cost material, which was found to suitably combust when immersed into molten aluminum in a manner to avoid contaminating the molten aluminum. Accordingly, the entire hood panel 10 was found suitable to be recyclable integrally by immerging into molten aluminum directly at the production plant without requiring disassembly of neither the handle 18 nor the insulator edge assembly 44.
As can be understood, the examples described above and illustrated are intended to be exemplary only. For instance, it will be understood that various alternate embodiments of frame structure 16, panel member shape, etc., can be used without significantly affecting the working of the hood panel 10 or in order to adapt it to specific embodiments.
In some embodiments, it can be found more suitable to use a handle 18 or an insulator edge assembly 44 which is dissassemblable rather than consumable by the molten aluminum.
- 6 -The chamfer face 36 can provide a specific advantage, but is optional to some embodiments. Moreover, It will be understood. Other materials than wood and polymers can be used for the handle 18 or bushings 54, for instance, with a preference for materials which are combustible and non-contaminating in the sense that the material will satisfactorily combust when thrown into molten aluminum for recycling and for which any residual material from the combustion will not be considered as a significant contaminant by persons skilled in this art. The insulator edge assembly 44, if present in an embodiment, can be provided along a top edge 22 rather than a bottom edge 24 for instance. Moreover, it will be understood that although the hood panel illustrated in the figures is planar along its length, it can be preferred .. to make the hood panel curved along its length, or in the form of a plurality of planar segments inclined relative to one another, in alternate embodiments. Such curved hood panels will still be considered to have a rectangular shaped panel member even though the rectangular shape is segmented or curved. Accordingly, the scope is indicated by the appended claims.
Claims (13)
1. A hood panel for an aluminum smelter, the hood panel having :
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape, the lateral edges of the body having a sealing face extending normal to the panel member for snug sealing abutment against the corresponding sealing face of an adjacent hood panel, the sealing face leading from the panel member to a chamfer face, the chamfer face sloping toward the opposite edge;
a handle made of wood, mounted to an outer face of the rectangular shaped panel member; and an insulator edge assembly having a joint plate made of aluminum mounted to the body and projecting therefrom, the joint plate being electrically partitioned from the body by insulator bushings made of a polymer material;
wherein the wood and the polymer material are combustible and non-contaminating when immerged into molten aluminum to allow integrally recycling the hood panel by immersion into molten aluminum without disassembling the insulator edge nor the handle.
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape, the lateral edges of the body having a sealing face extending normal to the panel member for snug sealing abutment against the corresponding sealing face of an adjacent hood panel, the sealing face leading from the panel member to a chamfer face, the chamfer face sloping toward the opposite edge;
a handle made of wood, mounted to an outer face of the rectangular shaped panel member; and an insulator edge assembly having a joint plate made of aluminum mounted to the body and projecting therefrom, the joint plate being electrically partitioned from the body by insulator bushings made of a polymer material;
wherein the wood and the polymer material are combustible and non-contaminating when immerged into molten aluminum to allow integrally recycling the hood panel by immersion into molten aluminum without disassembling the insulator edge nor the handle.
2. A hood panel for an aluminum smelter, the hood panel having :
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape;
a handle mounted to an outer face of the rectangular shaped panel member; and Date Recue/Date Received 2020-12-02 an insulator edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape;
a handle mounted to an outer face of the rectangular shaped panel member; and Date Recue/Date Received 2020-12-02 an insulator edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
3. The hood panel of claim 1 wherein the lateral edges of the body have a sealing face extending normal to the panel member for snug sealing abutment against the corresponding sealing face of an adjacent hood panel, the sealing face leading to a chamfer face sloping toward the opposite edge.
4. The hood panel of claim 1 wherein the lateral edges of the body have an outer portion having a sealing surface extending normal to and inwardly from the panel member and inner portion having a bevel surface, the bevel surfaces of the two lateral edges sloping toward one another
5. The hood panel of claim 1 wherein the handle is made of a material which is combustible and non-contaminating when immerged into molten aluminum.
6. The hood panel of claim 5 wherein the handle is made of wood.
7. The hood panel of claim 1 wherein the insulator edge assembly has a joint plate extending as a projection of the panel member.
8. The hood panel of claim 7 wherein the joint plate is made of aluminum and is electrically partitioned from the body by insulator bushings, the insulator bushings being combustible and non-contaminating when immerged into molten aluminum.
9. The hood panel of claim 8 wherein the insulator bushings are made of a polymer.
10. The hood panel of claim 8 wherein the joint plate is fastened to the body by rivets.
11. A method of using a hood panel with an aluminum smelter, the method comprising :
operating the aluminum smelter for a given period of time while maintaining the hood panel in snug abutment against a corresponding cell portion of the smelter while i) directing fumes towards a vent of the smelter and ii) allowing selective access to the cell of the smelter by temporary removal from the snug abutment; and subsequently to the given period of time, removing the hood panel from the snug abutment against the cell portion and immerging the hood panel into molten aluminum in the smelter.
operating the aluminum smelter for a given period of time while maintaining the hood panel in snug abutment against a corresponding cell portion of the smelter while i) directing fumes towards a vent of the smelter and ii) allowing selective access to the cell of the smelter by temporary removal from the snug abutment; and subsequently to the given period of time, removing the hood panel from the snug abutment against the cell portion and immerging the hood panel into molten aluminum in the smelter.
12. The method of claim 11 wherein the hood panel has :
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape;
a handle mounted to an outer face of the rectangular shaped panel member, the handle being made of a material which is combustible and non-contaminating when immerged into the molten aluminum; and an insulator edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
a body entirely made of aluminum components having a rectangular shaped panel member made integral to a frame structure, the body having a top edge, a bottom edge, and two opposite lateral edges associated with the rectangular shape;
a handle mounted to an outer face of the rectangular shaped panel member, the handle being made of a material which is combustible and non-contaminating when immerged into the molten aluminum; and an insulator edge assembly mounted to the bottom edge of the body to electrically insulate the body from its support area.
13. The method of claim 12 wherein the insulator edge assembly has a joint plate extending as a projection of the panel member, the joint plate being made of aluminum and being electrically partitioned from the body by insulator bushings, the insulator bushings being combustible and non-contaminating when immerged into molten aluminum.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2856778A CA2856778C (en) | 2014-07-11 | 2014-07-11 | Hood panel for aluminum smelter |
| PCT/CA2015/050637 WO2016004533A1 (en) | 2014-07-11 | 2015-07-09 | Hood panel for aluminum smelter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2856778A CA2856778C (en) | 2014-07-11 | 2014-07-11 | Hood panel for aluminum smelter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2856778A1 CA2856778A1 (en) | 2016-01-11 |
| CA2856778C true CA2856778C (en) | 2021-07-13 |
Family
ID=55063446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2856778A Active CA2856778C (en) | 2014-07-11 | 2014-07-11 | Hood panel for aluminum smelter |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2856778C (en) |
| WO (1) | WO2016004533A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5667648A (en) * | 1996-03-18 | 1997-09-16 | Michael J. McDonald | Removable closure for an opening in an aluminum refining pot |
| EP1303649B1 (en) * | 2000-07-19 | 2012-08-29 | Alcoa Inc. | Insulation assemblies for metal production cells |
| WO2003102274A1 (en) * | 2002-06-04 | 2003-12-11 | Moltech Invent S.A. | Aluminium electrowinning cell design with movable insulating cover sections |
-
2014
- 2014-07-11 CA CA2856778A patent/CA2856778C/en active Active
-
2015
- 2015-07-09 WO PCT/CA2015/050637 patent/WO2016004533A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CA2856778A1 (en) | 2016-01-11 |
| WO2016004533A1 (en) | 2016-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103495784B (en) | A kind of grid solar cell piece welding fixture and welding procedure thereof | |
| CA2856778C (en) | Hood panel for aluminum smelter | |
| ATE173027T1 (en) | METHOD FOR RECOVERING USABLE METALS FROM A NICKEL-HYDROGEN CELL | |
| CN207696478U (en) | A kind of electronics production line scolding tin patch work platform | |
| CN105934537B (en) | covering system for electrolytic cell | |
| CN207171143U (en) | A kind of disassembling apparatus of electron wastes | |
| CN206259780U (en) | A kind of easy-to-dismount elevating conveyor motor protection cage | |
| EA202092170A1 (en) | CATHODE ELEMENTS FOR A HOLLA-EROU CELL FOR PRODUCING ALUMINUM AND A CELL OF THIS TYPE HAVING SUCH INSTALLED ELEMENTS | |
| US2536877A (en) | Cathode | |
| SE8404802L (en) | METHOD FOR EXTENDING HALLABILITY TO WOODWORKING BET | |
| CN107484340A (en) | A kind of anti-flash pcb board and processing method | |
| CN204848319U (en) | Sealed lid in sewage treatment pond | |
| DE502006002491D1 (en) | OVEN SYSTEM AND METHOD FOR MELTING META | |
| GB2080829A (en) | Electrode edge protector, | |
| CN105108267A (en) | Circuit board welding tool | |
| US3642604A (en) | Anodic assembly for electrolysis cells | |
| FI851887L (en) | ELEKTROD FOER ELEKTROMETALLURGISKA FOERFARANDEN. | |
| CN203205375U (en) | Upper electrode used for etching equipment | |
| CN205009360U (en) | Panel waxdip equipment | |
| CN103909142A (en) | Punching and chip removal device for casting aluminum plates | |
| CN220618555U (en) | Equipment for recovering silver from silver-containing wastewater | |
| CN209312786U (en) | A kind of photovoltaic component lamination template | |
| CN221540070U (en) | Circuit board clout prunes frock | |
| CN101654793B (en) | Electrolytic cell gathering overhaul workshop middle digging structure | |
| CN203875015U (en) | Material distribution determining jig for screw assembling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20190604 |