CN102400177B - Cathode carbon block structure capable of reducing horizontal current in molten cathode aluminum in aluminum electrolysis cell - Google Patents
Cathode carbon block structure capable of reducing horizontal current in molten cathode aluminum in aluminum electrolysis cell Download PDFInfo
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- CN102400177B CN102400177B CN201110385777.0A CN201110385777A CN102400177B CN 102400177 B CN102400177 B CN 102400177B CN 201110385777 A CN201110385777 A CN 201110385777A CN 102400177 B CN102400177 B CN 102400177B
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 101
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 99
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 50
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 230000004323 axial length Effects 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 118
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 abstract description 2
- 229910033181 TiB2 Inorganic materials 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 23
- 239000004411 aluminium Substances 0.000 description 20
- 239000003610 charcoal Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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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
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
-
- 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
- C25C3/16—Electric current supply devices, e.g. bus bars
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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 invention discloses a cathode carbon block structure capable of reducing horizontal current in molten cathode aluminum in an aluminum electrolysis cell, and belongs to the technical field of aluminum electrolysis. The cathode carbon block structure comprises a cathode carbon block and a cathode steel bar, the longitudinal section of the top of the cathode carbon block has reverse trapezoidal structure or reverse triangular structure, the top of the cathode carbon block is divided into two or three sections, and the vertical height difference between two ends of an inclined section is 1 to 6 percent of the axial length of the cathode carbon block. According to the cathode carbon block structure, the electrolysis current released from the electrode during electrolysis in the electrolysis cell in the vertical direction vertically enters the cathode carbon block through the molten aluminum, so that the purpose of eliminating or greatly reducing the horizontal current in the molten cathode aluminum in the electrolysis cell is fulfilled. The cathode carbon block structure is suitable for an electrolysis cell without a lug boss on the surface of the cathode carbon block, a special-shaped cathode structural electrolysis cell with a lug boss on the surface of the cathode carbon block and a cathode structural electrolysis cell with a TiB2/C composite coating on the surface of the cathode.
Description
Technical field
The invention belongs to technical field of aluminum electrolysis, particularly a kind of cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell.
Background technology
Horizontal current in existing industrial aluminum electrolysis bath inner cathode aluminium liquid, particularly the effect along vertical magnetic field in the horizontal current of electric tank cathode charcoal piece longitudinal direction and electrolyzer is to cause one of unsettled major reason of electrolyzer inner cathode liquid aluminum.Unstable due to electric tank cathode liquid aluminum, not only increases the solution loss of aluminium in electrolyzer, current efficiency is reduced, and the effective pole span between electric tank cathode and negative electrode is reduced.
In order to reduce the horizontal current in electrolyzer inner cathode aluminium liquid, people are not only at the design level that improves electrolyzer bus, a lot of work has been done in the vertical magnetic field aspect reducing as far as possible in electrolyzer, and has also all done a lot of work in the syndeton that changes electrolytic cell cathode steel bar and cathode steel bar and cathode carbon pieces.Wherein more representational is Chinese patent " a kind of structure that significantly reduces horizontal current in aluminum liquid of aluminum cell " (Yang Xiaodong etc., application number is 201020566373) a kind of aluminum cell cathode steel bar structure of proposing, this structure has can improve and reduce aluminum liquid horizontal electric current in electrolyzer, improves the effect of electrolyzer stability; Yet this technological operation is complicated, the abrasiveness of the anti-electrolyzer of the barrier material using in partition seam in cathode steel bar and the insulating material that uses near the lower part of the cathode steel bar of cathode carbon pieces limit portion be one without the problem of practice test, once ionogen or aluminium liquid infiltrate or these positions of bleeding may the destruction of anticathode rod iron and the life-span of electrolyzer exert an influence.
Summary of the invention
The problems referred to above that exist for existing cathode carbon block structure, the invention provides a kind of cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell, the change of the surface structure by cathode carbon pieces, make by ionogen Faradaic current out, can vertically via aluminium liquid, enter cathode carbon pieces in electrolytic process, reach the effect of eliminating or reducing horizontal current in aluminium liquid.
The cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the present invention comprises cathode carbon pieces and cathode steel bar, wherein the longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure or del structure, and cathode carbon pieces end face is provided with boss or is not provided with boss; When the longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, cathode carbon pieces end face is divided into three sections, wherein interlude is parallel with cathode carbon pieces bottom surface, and interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 1% ~ 6% of cathode carbon pieces axial length; When the longitudinal cross-section of cathode carbon pieces end face is del structure, cathode carbon pieces end face is divided into two symmetrical tilting sections, and the vertical drop at tilting section two ends is 1% ~ 6% of cathode carbon pieces axial length.
In said structure, when cathode carbon pieces end face is provided with boss, on each tilting section, be respectively provided with a long boss, or on each tilting section, be respectively provided with 2 ~ 5 short boss, or on each tilting section, be respectively provided with 2 ~ 5 diameters at 20 ~ 30cm cylindrical boss, or on each tilting section, be respectively provided with 2 ~ 5 length of sides at 20 ~ 30cm square column type boss; While having 2 above boss on same tilting section, each boss is uniformly distributed along the axis of tilting section.
In said structure, when each tilting section is provided with a long boss, the longitudinal length direction of long boss is parallel with the longitudinal length direction of tilting section, the distance of long boss end and cathode carbon pieces end is 5 ~ 30cm, on same cathode carbon pieces, the spacing of two long boss is 3 ~ 20cm, and the distance of the both sides of long boss and cathode carbon pieces both sides is 10 ~ 20cm.
In said structure, when each tilts to be provided with short boss, short boss axis is in the longitudinal direction vertical at the axis of length direction with cathode carbon pieces, the spacing of adjacent two short boss at cathode carbon pieces middle part is 5 ~ 20cm, the spacing of the two ends of short boss and the side of cathode carbon pieces is 10 ~ 20cm, and the width of short boss is 20 ~ 30cm.
In said structure, the length≤20cm of described interlude.
In said structure, when cathode carbon pieces end face is provided with boss, the height of boss is 9 ~ 15cm.
In said structure, described cathode carbon pieces bottom offers steel bar trough or 4 steel bar troughs of lining up two rows of 2 perforations, in each steel bar trough, is provided with cathode steel bar; Make firm by ramming with ramming paste in space between cathode steel bar and steel bar trough.
In said structure, the longitudinal cross-section of described cathode carbon pieces end face is inverted trapezoidal structure or del structure; And when the longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, the length≤20cm of its interlude; When the length of interlude is 0, the longitudinal cross-section of cathode carbon pieces end face becomes triangular structure.
In said structure, when cathode carbon pieces end face is provided with boss, boss and cathode carbon pieces are structure as a whole or are embedded on the end face of cathode carbon pieces; When boss is embedded in cathode carbon pieces end face, cathode carbon pieces surface is provided with embedding groove, and boss is fixed in embedding groove by ramming paste.
The hole shape face that the two ends of the cathode carbon pieces upper surface that the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the present invention adopts tilt gradually to center, replace traditional horizontal plane, make the interior Faradaic current via ionogen vertical direction out of electrolyzer in electrolytic process vertically by aluminium liquid, enter cathode carbon pieces again, thereby reach the object of eliminating or greatly reducing horizontal current in electric tank cathode aluminium liquid.The present invention is not only applicable to the electrolyzer that cathode carbon pieces surface does not have boss, also being applicable to cathode carbon pieces surface has the cathode carbon pieces of the special-shaped cathode structure electrolysis groove of boss, is also applicable to the cathode construction electrolyzer that there is TiB2/C composite coating on cathode carbon pieces surface.
Accompanying drawing explanation
Fig. 1 is that the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the embodiment of the present invention 1 is faced cross-sectional view;
Fig. 2 is the B-B face structural representation of Fig. 1;
Fig. 3 is the A-A face structural representation of Fig. 1;
Fig. 4 is that the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the embodiment of the present invention 2 is faced cross-sectional view;
Fig. 5 is the plan structure schematic diagram of Fig. 4;
Fig. 6 is the A-A face structural representation of Fig. 4;
Fig. 7 is that the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the embodiment of the present invention 3 is faced cross-sectional view;
Fig. 8 is the plan structure schematic diagram of Fig. 7;
Fig. 9 is the A-A face structural representation of Fig. 7;
Figure 10 is that the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell of the embodiment of the present invention 4 is faced cross-sectional view;
Figure 11 is the plan structure schematic diagram of Figure 10;
Figure 12 is the A-A face structural representation of Figure 10;
In figure 1, cathode carbon pieces, 2, cathode steel bar, 3, ramming paste, 4, cylindrical boss.
Embodiment
The cathode carbon pieces length adopting in the embodiment of the present invention is 3300mm, and wide is 515mm, and height is 450 ~ 550mm.
Between two sides of cathode steel bar and the steel bar trough of cathode carbon pieces, with Carbon ramming paste, make firm by ramming, between cathode steel bar upper surface and cathode steel bar trench bottom, with Carbon ramming paste, make firm by ramming or fill with Graphite Powder 99, the thickness of ramming paste is 10 ~ 20mm, and during filled stone ink powder, the thickness of Graphite Powder 99 is 5 ~ 10mm.
embodiment 1
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell as shown in Figure 1, B-B face structure as shown in Figure 2, A-A face structure as shown in Figure 3, comprise cathode carbon pieces 1 and cathode steel bar 2, cathode carbon pieces 1 bottom offers 4 steel bar troughs of lining up two rows, is provided with cathode steel bar 2 in each steel bar trough; Make firm by ramming with ramming paste 3 in space between cathode steel bar 2 and steel bar trough;
The longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, and cathode carbon pieces end face is divided into three sections, and interlude is parallel with cathode carbon pieces bottom surface, and interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 3% of cathode carbon pieces axial length; The length 10cm of interlude;
Through experiment and calculating, adopt above-mentioned cathode carbon block structure to carry out electrolysis of aluminum, can reduce significantly electric tank cathode aluminium liquid inherence distributes along the horizontal current on electric tank cathode charcoal piece longitudinal direction, effectively reduce the liquid fluctuating of electric tank cathode aluminium liquid, not only can reduce the solution loss of aluminium, current efficiency is improved, and can make bath voltage reduce, reach the object that reduces electrolysis of aluminum power consumption.
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell as shown in Figure 4, as shown in Figure 5, A-A face structure as shown in Figure 6, comprises cathode carbon pieces 1 and cathode steel bar 2 to vertical view, cathode carbon pieces 1 bottom offers the steel bar trough of 2 perforations, is provided with cathode steel bar 2 in each steel bar trough; Make firm by ramming with ramming paste 3 in space between cathode steel bar 2 and steel bar trough;
The longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, and cathode carbon pieces end face is provided with boss; Cathode carbon pieces end face is divided into three sections, and wherein interlude is parallel with cathode carbon pieces bottom surface, and interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 1% of cathode carbon pieces axial length; The length 20cm of interlude;
On each tilting section, be respectively provided with a long boss, two long boss are symmetrical arranged, the longitudinal length direction (axially) of long boss is parallel with the longitudinal length direction (axially) of tilting section, the spacing of two long boss is 20cm, and a side of close cathode carbon pieces end and the distance of cathode carbon pieces end of each long boss are 10cm; The distance of the both sides of long boss and cathode carbon pieces both sides is 20cm; The height of long boss is 9cm; Long boss and cathode carbon pieces are structure as a whole;
Through experiment and calculating, adopt above-mentioned cathode carbon block structure to carry out electrolysis of aluminum, can reduce significantly electric tank cathode aluminium liquid inherence distributes along the horizontal current on electric tank cathode charcoal piece longitudinal direction, effectively reduce the liquid fluctuating of electric tank cathode aluminium liquid, not only can reduce the solution loss of aluminium, current efficiency is improved, and can make bath voltage reduce, reach the object that reduces electrolysis of aluminum power consumption.
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell as shown in Figure 7, as shown in Figure 8, A-A face structure as shown in Figure 9, comprises cathode carbon pieces 1 and cathode steel bar 2 to vertical view, cathode carbon pieces 1 bottom offers the steel bar trough of 2 perforations, is provided with cathode steel bar 2 in each steel bar trough; Make firm by ramming with ramming paste 3 in space between cathode steel bar 2 and steel bar trough;
The longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, and cathode carbon pieces end face is provided with boss; Cathode carbon pieces end face is divided into three sections, and wherein interlude is parallel with cathode carbon pieces bottom surface, and interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 5% of cathode carbon pieces axial length; The length 3cm of interlude;
On each tilting section, be respectively provided with a long boss, two long boss are symmetrical arranged, the longitudinal length direction (axially) of long boss is parallel with the longitudinal length direction (axially) of tilting section, the spacing of two long boss is 3cm, and a side of close cathode carbon pieces end and the distance of cathode carbon pieces end of each long boss are 20cm; The distance of the both sides of long boss and cathode carbon pieces both sides is 10cm; The height of long boss is 12cm; Long boss and cathode carbon pieces are structure as a whole;
Through experiment and calculating, adopt above-mentioned cathode carbon block structure to carry out electrolysis of aluminum, can reduce significantly electric tank cathode aluminium liquid inherence distributes along the horizontal current on electric tank cathode charcoal piece longitudinal direction, effectively reduce the liquid fluctuating of electric tank cathode aluminium liquid, not only can reduce the solution loss of aluminium, current efficiency is improved, and can make bath voltage reduce, reach the object that reduces electrolysis of aluminum power consumption.
embodiment 4
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell as shown in figure 10, vertical view as shown in figure 11, A-A face structure as shown in figure 12, comprise cathode carbon pieces 1 and cathode steel bar 2, cathode carbon pieces 1 bottom offers 4 steel bar troughs of lining up two rows, is provided with cathode steel bar 2 in each steel bar trough; Make firm by ramming with ramming paste 3 in space between cathode steel bar 2 and steel bar trough;
The longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, cathode carbon pieces end face is provided with boss, and cathode carbon pieces end face is divided into three sections, and wherein interlude is parallel with cathode carbon pieces bottom surface, interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 6% of cathode carbon pieces axial length; The length 5cm of interlude;
On each tilting section, be respectively provided with 2 diameters at 20 ~ 30cm cylindrical boss 4, each cylindrical boss 4 is uniformly distributed along the axis of tilting section, is highly 15cm;
Cylindrical boss 4 is embedded on the end face of cathode carbon pieces, and cathode carbon pieces surface is provided with embedding groove, and cylindrical boss 4 is fixed in embedding groove by ramming paste;
Through experiment and calculating, adopt above-mentioned cathode carbon block structure to carry out electrolysis of aluminum, can reduce significantly electric tank cathode aluminium liquid inherence distributes along the horizontal current on electric tank cathode charcoal piece longitudinal direction, effectively reduce the liquid fluctuating of electric tank cathode aluminium liquid, not only can reduce the solution loss of aluminium, current efficiency is improved, and can make bath voltage reduce, reach the object that reduces electrolysis of aluminum power consumption.
embodiment 5
The cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell comprises cathode carbon pieces and cathode steel bar, and 4 steel bar troughs of lining up two rows are offered in cathode carbon pieces bottom, in each steel bar trough, are provided with cathode steel bar; Make firm by ramming with ramming paste in space between cathode steel bar and steel bar trough;
When the longitudinal cross-section of cathode carbon pieces end face is del structure, cathode carbon pieces end face is divided into two symmetrical tilting sections, and the vertical drop at tilting section two ends is 6% of cathode carbon pieces axial length.
embodiment 6
The cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell comprises cathode carbon pieces and cathode steel bar, and cathode carbon pieces bottom offers the steel bar trough of 2 perforations, in each steel bar trough, is provided with cathode steel bar; Make firm by ramming with ramming paste in space between cathode steel bar and steel bar trough;
When the longitudinal cross-section of cathode carbon pieces end face is del structure, cathode carbon pieces end face is divided into two symmetrical tilting sections, and the vertical drop at tilting section two ends is 1% of cathode carbon pieces axial length.
embodiment 7
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 4, difference is: on each tilting section, be respectively provided with 3 diameters at 25cm cylindrical boss.
embodiment 8
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 4, difference is: on each tilting section, be respectively provided with 5 diameters at 30cm cylindrical boss.
embodiment 9
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 4, difference is: on each tilting section, be respectively provided with 2 length of sides at 20cm square column type boss.
embodiment 10
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 4, difference is: on each tilting section, be respectively provided with 4 length of sides at 30cm square column type boss.
embodiment 11
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 4, difference is: on each tilting section, be respectively provided with 5 length of sides at 25cm square column type boss.
embodiment 12
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 2, difference is: on each tilting section, be respectively provided with 2 short boss, short boss axis is in the longitudinal direction vertical at the axis of length direction with cathode carbon pieces, the spacing of adjacent two short boss at cathode carbon pieces middle part is 5cm, the spacing of the two ends of short boss and the side of cathode carbon pieces is 10cm, and the width of short boss is 20cm; On same tilting section, each short boss is uniformly distributed along the axis of tilting section, and each boss and cathode carbon pieces are structure as a whole.
embodiment 13
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 2, difference is: on each tilting section, be respectively provided with 4 short boss, short boss axis is in the longitudinal direction vertical at the axis of length direction with cathode carbon pieces, the spacing of adjacent two short boss at cathode carbon pieces middle part is 10cm, the spacing of the two ends of short boss and the side of cathode carbon pieces is 15cm, and the width of short boss is 25cm; On same tilting section, each short boss is uniformly distributed along the axis of tilting section, and each boss and cathode carbon pieces are structure as a whole.
embodiment 14
Can reduce the cathode carbon block structure of horizontal current in molten cathode aluminum in aluminum electrolysis cell with embodiment 2, difference is: on each tilting section, be respectively provided with 5 short boss, short boss axis is in the longitudinal direction vertical at the axis of length direction with cathode carbon pieces, the spacing of adjacent two short boss at cathode carbon pieces middle part is 20cm, the spacing of the two ends of short boss and the side of cathode carbon pieces is 20cm, and the width of short boss is 30cm; On same tilting section, each short boss is uniformly distributed along the axis of tilting section, and each boss and cathode carbon pieces are structure as a whole.
Claims (6)
1. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell, comprise cathode carbon pieces and cathode steel bar, it is characterized in that: the longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure or del structure, cathode carbon pieces end face is provided with boss or is not provided with boss; When the longitudinal cross-section of cathode carbon pieces end face is inverted trapezoidal structure, cathode carbon pieces end face is divided into three sections, wherein interlude is parallel with cathode carbon pieces bottom surface, and interlude both sides are symmetrical tilting section, and the vertical drop at tilting section two ends is 1% ~ 6% of cathode carbon pieces axial length; When the longitudinal cross-section of cathode carbon pieces end face is del structure, cathode carbon pieces end face is divided into two symmetrical tilting sections, and the vertical drop at tilting section two ends is 1% ~ 6% of cathode carbon pieces axial length; Width≤the 20cm of described interlude.
2. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell according to claim 1, it is characterized in that when cathode carbon pieces end face is provided with boss, on each tilting section, be respectively provided with a long boss, or on each tilting section, be respectively provided with 2 ~ 5 short boss; On each described tilting section, be respectively provided with 2 ~ 5 short boss and refer on each tilting section and be respectively provided with 2 ~ 5 diameters at 20 ~ 30cm cylindrical boss, or on each tilting section, be respectively provided with 2 ~ 5 length of sides at 20 ~ 30cm square column type boss; While having 2 above boss on same tilting section, each boss is uniformly distributed along the axis of tilting section.
3. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell according to claim 2, it is characterized in that when each tilting section is provided with a long boss, the longitudinal length direction of long boss is parallel with the longitudinal length direction of tilting section, the distance of long boss end and cathode carbon pieces end is 5 ~ 30cm, on same cathode carbon pieces, the spacing of two long boss is 3 ~ 20cm, and the distance of the both sides of long boss and cathode carbon pieces both sides is 10 ~ 20cm.
4. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell according to claim 2, is characterized in that when each inclination
sectionwhile being provided with short boss, short boss axis is in the longitudinal direction vertical at the axis of length direction with cathode carbon pieces, the spacing of adjacent two short boss at cathode carbon pieces middle part is 5 ~ 20cm, the spacing of the two ends of short boss and the side of cathode carbon pieces is 10 ~ 20cm, and the width of short boss is 20 ~ 30cm.
5. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell according to claim 1, is characterized in that when cathode carbon pieces end face is provided with boss, and the height of boss is 9 ~ 15cm.
6. the cathode carbon block structure that can reduce horizontal current in molten cathode aluminum in aluminum electrolysis cell according to claim 1, it is characterized in that described cathode carbon pieces bottom offers steel bar trough or 4 steel bar troughs of lining up two rows of 2 perforations, is provided with cathode steel bar in each steel bar trough; Make firm by ramming with ramming paste in space between cathode steel bar and steel bar trough.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385777.0A CN102400177B (en) | 2011-11-29 | 2011-11-29 | Cathode carbon block structure capable of reducing horizontal current in molten cathode aluminum in aluminum electrolysis cell |
| PCT/CN2011/084592 WO2013078745A1 (en) | 2011-11-29 | 2011-12-24 | Cathode carbon block structure that reduces horizontal current in cathode molten aluminum in aluminum reduction cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110385777.0A CN102400177B (en) | 2011-11-29 | 2011-11-29 | Cathode carbon block structure capable of reducing horizontal current in molten cathode aluminum in aluminum electrolysis cell |
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| CN102400177A CN102400177A (en) | 2012-04-04 |
| CN102400177B true CN102400177B (en) | 2014-03-26 |
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| CN102719849A (en) * | 2012-06-20 | 2012-10-10 | 索通发展股份有限公司 | Cathode charcoal block with basin-shaped structure |
| CN102995057B (en) * | 2012-12-05 | 2015-09-02 | 中电投宁夏青铜峡能源铝业集团有限公司 | Surface is for plane or V-arrangement face and have cathode block and the preparation method of staggered charcoal bowl |
| CN112877732B (en) * | 2021-01-13 | 2022-02-22 | 东北大学 | Cathode structure for reducing precipitation formation of aluminum electrolytic cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899677A (en) * | 2009-05-26 | 2010-12-01 | 沈阳铝镁设计研究院 | Aluminum electrolytic bath composite cathode carbon block structure |
| CN101942676A (en) * | 2010-09-30 | 2011-01-12 | 湖南晟通科技集团有限公司 | Special-shaped cathode structured aluminum electrolytic cell |
| CN102220604A (en) * | 2010-04-15 | 2011-10-19 | 山西晋阳碳素股份有限公司 | Special-shaped cathode carbon block of electrolytic tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864580B (en) * | 2010-07-08 | 2013-01-02 | 沈阳北冶冶金科技有限公司 | Aluminum electrolysis bath embedded with stud bumps on upper surface of cathode block |
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- 2011-11-29 CN CN201110385777.0A patent/CN102400177B/en not_active Expired - Fee Related
- 2011-12-24 WO PCT/CN2011/084592 patent/WO2013078745A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899677A (en) * | 2009-05-26 | 2010-12-01 | 沈阳铝镁设计研究院 | Aluminum electrolytic bath composite cathode carbon block structure |
| CN102220604A (en) * | 2010-04-15 | 2011-10-19 | 山西晋阳碳素股份有限公司 | Special-shaped cathode carbon block of electrolytic tank |
| CN101942676A (en) * | 2010-09-30 | 2011-01-12 | 湖南晟通科技集团有限公司 | Special-shaped cathode structured aluminum electrolytic cell |
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| WO2013078745A1 (en) | 2013-06-06 |
| CN102400177A (en) | 2012-04-04 |
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