CN102534667B - Reduce method and the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath - Google Patents
Reduce method and the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath Download PDFInfo
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- CN102534667B CN102534667B CN201010607183.5A CN201010607183A CN102534667B CN 102534667 B CN102534667 B CN 102534667B CN 201010607183 A CN201010607183 A CN 201010607183A CN 102534667 B CN102534667 B CN 102534667B
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Abstract
<b> the invention discloses a kind of method reducing horizontal current of aluminum liquid layer of electrolytic bath, it is characterized in that: the method is the longitudinal contact resistance by changing between cathode block and cathode steel bar, balance the genesis analysis electric current between cathode block and cathode steel bar, the distributed current of cathode block and the longitudinal each tie point of cathode steel bar is made to be tending towards even as far as possible, to reduce the horizontal current of aluminium liquid layer.The present invention increases the resistance that distribution of current is put compared with mil, thus makes electric current draw close to the sparse position of distribution by force, thus makes distribution of current even as far as possible, be conducive to the horizontal current reducing cathode block, finally make electromagnetic force weaken, reduce the protuberance fluctuation of aluminium liquid, stabilize production.</b>
Description
Technical field
the present invention relates to a kind of method and the cathode block assembly that reduce horizontal current of aluminum liquid layer of electrolytic bath, belong to the interconnection technique field in electrolyzer between cathode block and cathode steel bar.
Background technology
along with the develop rapidly of aluminum electrolyzation technology, large-scale aluminum electrolytic cell and super-huge aluminium cell are generally used in electrolysis of aluminum engineering.The capacity of aluminium cell is larger, and the stability of electrolyzer is more crucial.In design in the past, only pay attention to the design of electrolyzer magnetic field and thermal field, and have ignored the design of electrolyzer horizontal current, the capacity increase along with aluminium cell can cause the bad stability of large-scale aluminium electrolysis, is unfavorable for the normal production of electrolyzer.
the packaging assembly form of aluminum current cathode carbon block of electrolytic bath is normally such, cathode block has notch, cathode steel bar is inserted in notch, is filled with electro-conductive material in the gap between notch and cathode steel bar, and pricking is solidly connected or casts connects with the conduction ensureing electric current.But this uniform mode of connection makes electrolyzer see at anode longitudinal direction, resistance ratio near electrolyzer center line end is much bigger near the resistance of large face machined surface end, and electrolyzer current trend is in this section " anode → electrolyte layer → aluminium liquid layer → cathode carbon pieces → bonding material → cathode steel bar ", due to inconsistent to the resistance of cathode steel bar outlet each section of anode longitudinal direction, therefore the syndeton of this negative electrode and rod iron will make to produce larger horizontal current in aluminium liquid layer in electrolyzer.As everyone knows, in electrolyzer, horizontal current component is subject to the effect of vertical magnetic field component and " magnetomechanical effects " occurs, aluminium liquid will certainly be made to produce larger protuberance and fluctuation, thus make the bad stability of electrolyzer, finally be unfavorable for that electrolyzer is normally produced, especially on large-scale or super-huge electrolyzer, because negative electrode lengthens, cathode carbon pieces adopts the material that resistance is less, and this phenomenon is more outstanding.
Summary of the invention
the object of the invention is to, a kind of method and the cathode block assembly that reduce horizontal current of aluminum liquid layer of electrolytic bath are provided, to reduce protuberance and the fluctuation of aluminium liquid, thus enable electrolyzer stably manufactured, to overcome the deficiencies in the prior art.
technical scheme of the present invention: the method reducing horizontal current of aluminum liquid layer of electrolytic bath, the method is the longitudinal contact resistance by changing between cathode block and cathode steel bar, balance the genesis analysis electric current between cathode block and cathode steel bar, the distributed current of cathode block and the longitudinal each tie point of cathode steel bar is made to be tending towards even as far as possible, to reduce the horizontal current of aluminium liquid layer.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, the longitudinal contact resistance between described change cathode block and cathode steel bar adopts the bonding material of different conductivity to carry out bonding realization along cathode block and the longitudinal direction of cathode steel bar.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, described to adopt the bonding material of different conductivity to carry out along cathode block and the longitudinal direction of cathode steel bar bonding, is adopting insulating property good bonding material to carry out bonding with the Longitudinal current distribution of cathode steel bar than the position of comparatively dense along cathode block; Adopt in the position more sparse along cathode block and the Longitudinal current distribution of cathode steel bar and conduct electricity good bonding material and carry out bonding.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, the good bonding material of described insulating property is high-strength mould material or ceramic fiber cotton.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, the good bonding material of described conduction is that rod iron is stuck with paste or the phosphorus pig iron.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, the longitudinal contact resistance between described change cathode block and cathode steel bar changes conductive area along the longitudinal direction of cathode block and cathode steel bar to realize.
in the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath, the described longitudinal direction along cathode block and cathode steel bar changes conductive area, is reducing conductive area along cathode block and the Longitudinal current distribution of cathode steel bar than the position of comparatively dense; Conductive area is increased in the position more sparse along cathode block and the Longitudinal current distribution of cathode steel bar.
according to the cathode block assembly that the method for aforementioned reduction horizontal current of aluminum liquid layer of electrolytic bath is formed, comprise cathode block and cathode steel bar, cathode block is provided with notch, cathode steel bar is arranged in notch, the cross section of notch is greater than the cross section of cathode steel bar, in the gap of cathode steel bar and notch, be filled with bonding material, described bonding material comprises conductive adhesive material and insulating sticky splicing; Conductive adhesive material level is in the gap of middle part notch, and insulating sticky splicing is positioned at the gap of both ends notch.
in aforesaid cathode block assembly, the contact area of described insulating sticky splicing and cathode block is larger the closer to end.
in aforesaid cathode block assembly, the contact area of described conductive adhesive material and cathode block is less the closer to end.
compared with prior art, the present invention increases the resistance that distribution of current is put compared with mil, thus make electric current draw close to the sparse position of distribution by force, thus make distribution of current even as far as possible, be conducive to the horizontal current reducing cathode block, finally make electromagnetic force weaken, reduce the protuberance fluctuation of aluminium liquid, stabilize production.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is cathode block assembly of the present invention.
being labeled as in accompanying drawing: 1-cathode block, 2-cathode steel bar, 3-notch, 4-conductive adhesive material, the splicing of 5-insulating sticky.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
embodiments of the invention: the method for reduction horizontal current of aluminum liquid layer of electrolytic bath of the present invention is the longitudinal contact resistance by changing between cathode block and cathode steel bar, balance the genesis analysis electric current between cathode block and cathode steel bar, the distributed current of cathode block and the longitudinal each tie point of cathode steel bar is made to be tending towards even as far as possible, to reduce the horizontal current of aluminium liquid layer.Longitudinal contact resistance between described change cathode block and cathode steel bar adopts the bonding material of different conductivity to carry out bonding realization along cathode block and the longitudinal direction of cathode steel bar.Described to adopt the bonding material of different conductivity to carry out along cathode block and the longitudinal direction of cathode steel bar bonding, is adopting insulating property good bonding material to carry out bonding with the Longitudinal current distribution of cathode steel bar than the position of comparatively dense along cathode block; Adopt in the position more sparse along cathode block and the Longitudinal current distribution of cathode steel bar and conduct electricity good bonding material and carry out bonding.The good bonding material of described insulating property is high-strength mould material or ceramic fiber cotton.The good bonding material of described conduction is that rod iron is stuck with paste or the phosphorus pig iron.Longitudinal contact resistance between described change cathode block and cathode steel bar changes conductive area along the longitudinal direction of cathode block and cathode steel bar to realize.The described longitudinal direction along cathode block and cathode steel bar changes conductive area, is reducing conductive area along cathode block and the Longitudinal current distribution of cathode steel bar than the position of comparatively dense; Conductive area is increased in the position more sparse along cathode block and the Longitudinal current distribution of cathode steel bar.
the of the present invention a kind of structural representation reducing the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath formed according to the method described above as depicted in figs. 1 and 2, this cathode block assembly comprises cathode block 1 and cathode steel bar 2, cathode block is provided with notch 3, cathode steel bar 2 is arranged in notch 3, the cross section of notch 3 is greater than the cross section of cathode steel bar 2, in cathode steel bar 2 with the gap of notch 3, be filled with bonding material; Described bonding material comprises conductive adhesive material 4 and insulating sticky splicing 5; Conductive adhesive material 4 is positioned at the gap of middle part notch 3, and insulating sticky splicing 5 is positioned at the gap of both ends notch 3.Described insulating sticky splicing 5 is larger the closer to end with the contact area of cathode block 1.Described conductive adhesive material 4 is less the closer to end with the contact area of cathode block 1.
the present invention improves traditional cathode block kit form, the good material of insulating property is adopted to carry out bonding in distribution of current than the position of comparatively dense, it is bonding that the more sparse position of distribution of current adopts traditional electro-conductive material to carry out, its object is to the resistance increasing end, thus make electric current draw close to centre by force, thus make distribution of current even as far as possible, the favourable horizontal current (horizontal current calculating the structure formation after improvement reduces about 60%) reducing cathode block, electromagnetic force is finally made to weaken, the protuberance fluctuation of aluminium liquid is lowered, stabilize production.As the cathode block kit form reducing aluminium electrolysis cell cathode carbon block horizontal current on the electrolyzer that the present invention can be used in differing capacities, the structure formation of cathode block 1, cathode steel bar 2, conductive adhesive material 4, insulating sticky splicing 5 in the present invention, physical dimension and material properties all can adjust according to actual.Meanwhile, employing conductive adhesive material 4 coordinated insulation bonding material 5 makes the object for reaching uniformly distributing resistance, and the cathode block kit form of formation all belongs to this patent extent of competence.
Claims (2)
1. reduce the method for horizontal current of aluminum liquid layer of electrolytic bath, it is characterized in that: the method is the longitudinal contact resistance by changing between cathode block and cathode steel bar, balance the genesis analysis electric current between cathode block and cathode steel bar, the distributed current of cathode block and the longitudinal each tie point of cathode steel bar is made to be tending towards even as far as possible, to reduce the horizontal current of aluminium liquid layer; Concrete grammar is that to adopt the bonding material of different conductivity to carry out along cathode block and the longitudinal direction of cathode steel bar bonding; Insulating property good bonding material is being adopted to carry out bonding with the Longitudinal current distribution of cathode steel bar than the position of comparatively dense along cathode block; Adopt in the position more sparse along cathode block and the Longitudinal current distribution of cathode steel bar and conduct electricity good bonding material and carry out bonding; The good bonding material of insulating property is high-strength mould material or ceramic fiber cotton; The good bonding material that conducts electricity is that rod iron is stuck with paste or the phosphorus pig iron.
2. one kind is reduced the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath, comprise cathode block (1) and cathode steel bar (2), cathode block is provided with notch (3), cathode steel bar (2) is arranged in notch (3), the cross section of notch (3) is greater than the cross section of cathode steel bar (2), in the gap of cathode steel bar (2) with notch (3), be filled with bonding material, it is characterized in that: described bonding material comprises conductive adhesive material (4) and insulating sticky splicing (5); Conductive adhesive material (4) is positioned at the gap at middle part notch (3), and insulating sticky splicing (5) is positioned at the gap of both ends notch (3); Insulating sticky splicing (5) is larger the closer to end with the contact area of cathode block (1); Conductive adhesive material (4) is less the closer to end with the contact area of cathode block (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010607183.5A CN102534667B (en) | 2010-12-27 | 2010-12-27 | Reduce method and the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath |
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| CN201010607183.5A CN102534667B (en) | 2010-12-27 | 2010-12-27 | Reduce method and the cathode block assembly of horizontal current of aluminum liquid layer of electrolytic bath |
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| CN102534667A CN102534667A (en) | 2012-07-04 |
| CN102534667B true CN102534667B (en) | 2016-02-24 |
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| CN103774181A (en) * | 2012-10-23 | 2014-05-07 | 贵阳铝镁设计研究院有限公司 | Negative pole steel bar structure having effects of preventing erosion and inhibiting horizontal current |
| CN104451772A (en) * | 2013-09-25 | 2015-03-25 | 贵阳铝镁设计研究院有限公司 | Cathode structure for reducing horizontal current in electrolytic cell |
| CN109504982A (en) * | 2018-11-16 | 2019-03-22 | 广西百矿铝业有限公司 | A kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2892888Y (en) * | 2006-03-20 | 2007-04-25 | 贵阳铝镁设计研究院 | Steel bar structure for improving aluminium electrolytic cell cathode current density |
| CN201530870U (en) * | 2009-05-15 | 2010-07-21 | 高德金 | Aluminum electrolysis cell cathode conductive structure |
| CN201587988U (en) * | 2009-10-15 | 2010-09-22 | 郭龙 | Connecting structure for cathode carbon block and cathode steel bar of aluminium electrolysis cell |
| CN101880894A (en) * | 2009-05-05 | 2010-11-10 | 高德金 | Special carbon and graphite composite structure cathode carbon block of aluminum electrolytic cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2435406Y (en) * | 2000-07-07 | 2001-06-20 | 贵阳铝镁设计研究院 | Lining structure of aluminium cell |
| CN201981264U (en) * | 2010-12-27 | 2011-09-21 | 贵阳铝镁设计研究院有限公司 | Cathode carbon block assembly for reducing horizontal current of aluminum liquid layer of electrolytic bath |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2892888Y (en) * | 2006-03-20 | 2007-04-25 | 贵阳铝镁设计研究院 | Steel bar structure for improving aluminium electrolytic cell cathode current density |
| CN101880894A (en) * | 2009-05-05 | 2010-11-10 | 高德金 | Special carbon and graphite composite structure cathode carbon block of aluminum electrolytic cell |
| CN201530870U (en) * | 2009-05-15 | 2010-07-21 | 高德金 | Aluminum electrolysis cell cathode conductive structure |
| CN201587988U (en) * | 2009-10-15 | 2010-09-22 | 郭龙 | Connecting structure for cathode carbon block and cathode steel bar of aluminium electrolysis cell |
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