CN104711640A - Electrolytic tank - Google Patents
Electrolytic tank Download PDFInfo
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- CN104711640A CN104711640A CN201410146779.8A CN201410146779A CN104711640A CN 104711640 A CN104711640 A CN 104711640A CN 201410146779 A CN201410146779 A CN 201410146779A CN 104711640 A CN104711640 A CN 104711640A
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- Prior art keywords
- roasting medium
- graphite
- filling
- region
- weight percent
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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
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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 provides an electrolytic tank. The electrolytic tank comprises an integrally rectangular tank body, negative electrodes located at the bottom of the tank body, positive electrodes arranged to face the negative electrode and a roasting medium located between the negative electrodes and the positive electrodes and on the surfaces of the negative electrodes, wherein the roasting medium is a mixture of coke particles and graphite. The roasting medium comprises a bottom roasting medium located on the surfaces of the negative electrodes and a surface roasting medium located on the bottom roasting medium; the graphite and the coke particles in the bottom roasting medium are a weight ratio of 6: 4 to 9: 1; and negative electrode surface areas corresponding to each set of the positive electrodes are separately filled with the surface roasting medium, and the weight ratios of the graphite and the coke particles in the areas are not completely equal. Compared with the prior art, the invention has the following advantages: since the roasting medium on the surfaces of the negative electrodes is filled in two layers and the filling proportion at the middle of an outmost layer is different from the filling proportions at two ends, filling of the roasting medium is reasonable, and temperature gradient and stress deformation of the electrolytic tank are reduced.
Description
[technical field]
The present invention relates to a kind of electrolysis of aluminum, particularly relate to a kind of mixture of graphite and burnt grain that adopts as the electrolyzer of roasting medium.
[background technology]
Electrolyzer baking coke particles between negative electrode and positive electrode, lays one deck by Graphite Powder 99 and burnt grain, after electrolyzer energising, burnt granulosa heating makes anode electrolytic cell, negative electrode and lining temperature raise, realize carbon paste and surrounding sticks with paste coking, dry cathode inner lining and fire box temperature is heated to electrolysis production temperature, for electrolyzer is produced ready.
In correlation technique, anode electrolytic cell A face is identical with the roasting medium that B face is filled, and namely graphite is identical with the ratio of burnt grain.But in roasting temperature-rise period, electrolyzer end rapid heat dissipation, intermediate radiator is slow, causes the phenomenon that electrolyzer intermediate heat two is cold.In addition, due to negative busbar distributional difference, electrolytic bath cathode bus A face goes out electrical distance and is less than B face, can produce resistance difference in roasting process between negative electrode A, B face, produces thermograde; And along with temperature rising, the cathode carbon pieces resistance decreasing that temperature is high, difference that is middle and end expands further, produces thermograde, and produces stress deformation.And calcination initial stage thermograde and stress deformation will cause electric tank cathode to be out of shape to stretch one's legs hypertrophy with bight.Therefore, be necessary to provide a kind of new electrolyzer to solve the problems of the technologies described above in fact.
[summary of the invention]
The technical problem that the present invention need solve is the deficiency overcoming technical background, provides the electrolyzer that a kind of roasting Filled Dielectrics is reasonable, reduce thermograde and stress deformation.
A kind of electrolyzer of the present invention, comprise overall rectangular cell body, be positioned at the negative electrode bottom described cell body, be positioned at the some groups of anodes that described negative electrode top and described negative electrode are oppositely arranged, between described negative electrode and described anode and be positioned at the roasting medium of described cathode surface.Described roasting medium is the mixture of burnt grain and graphite.Wherein, described roasting medium is divided into the bottom roasting medium being positioned at cathode surface and the surface layer roasting medium be positioned at above described bottom roasting medium.The described graphite of bottom roasting medium and the weight percent of burnt grain are 6:4 to 9:1; Described surface layer roasting medium is filled respectively by the region often organizing cathode surface corresponding to described anode, and the weight percent of the graphite of filling in described region and burnt grain is incomplete same.
Preferably, described anode comprise n group A surface anode and with n group B surface anode, described n is even number.The cathode surface area that described A surface anode is corresponding is A1, A2, A3 in turn,,, An-2, An-1, An.The cathode surface area that described B surface anode is corresponding is B1, B2, B3 in turn,,, Bn-2, Bn-1, Bn.The graphite of surface layer roasting medium of filling in described A1 and An region and the weight percent of burnt grain are 5:5 to 9:1, the graphite of surface layer roasting medium of filling in described B1 and Bn region and the weight percent of burnt grain are 6:4 to 9:1, and the graphite of surface layer roasting medium of filling in described A2 to An-1 and B2 to Bn-1 region and the weight percent of burnt grain are 4:6 to 1:9.
Further preferably, the graphite of surface layer roasting medium of filling in described A1 and An region and the weight percent of burnt grain are 5:5.The graphite of surface layer roasting medium of filling in described B1 and Bn region and the weight percent of burnt grain are 8:2.The graphite of surface layer roasting medium of filling in described A2 to An-1 region and B2 to Bn-1 and the weight percent of burnt grain are 2:8.
Preferably, described anode comprise n group A surface anode and with n group B surface anode, described n is odd number.The cathode surface area that described A surface anode is corresponding is A1, A2, A3 in turn,,, An-2, An-1, An.The cathode surface area that described B surface anode is corresponding is B1, B2, B3 in turn,,, Bn-2, Bn-1, Bn.The graphite of surface layer roasting medium of filling in described A1, A2, An-1 and An region and the weight percent of burnt grain are 5:5 to 9:1.The graphite of surface layer roasting medium of filling in described B1, B2, Bn-1 and Bn region and the weight percent of burnt grain are 6:4 to 9:1.The graphite of surface layer roasting medium of filling in described A3 to An-2 and B3 to Bn-2 region and the weight percent of burnt grain are 4:6 to 1:9.
Further preferably, the graphite of surface layer roasting medium of filling in described A1, A2, An-1 and An region and the weight percent of burnt grain are 5:5.The graphite of surface layer roasting medium of filling in described B1, B2, Bn-1 and Bn region and the weight percent of burnt grain are 8:2.The graphite of surface layer roasting medium of filling in described A3 to An-2 region and B3 to Bn-2 and the weight percent of burnt grain are 2:8.
Compared with correlation technique, the present invention mainly considers the resistance difference in electrolyzer end and middle, A face and B face, by the ratio of graphite in the roasting medium that rationally arranges A surface anode in electrolyzer, B surface anode and burnt grain, distribution of resistance is optimized, reduce roasting resistance difference, realize electric heating and be evenly distributed.Reduce the thermograde of electrolyzer and the effect of stress deformation.
[accompanying drawing explanation]
Fig. 1 is cathode surface surface layer roasting Filled Dielectrics schematic diagram in electrolyzer of the present invention.
In figure:
Cell body 1, negative electrode 2, roasting medium 3.
[embodiment]
Below in conjunction with drawings and embodiments, the invention will be further described.
See Fig. 1, a kind of electrolyzer (be even number for anode unit number), below in conjunction with drawings and embodiments, the invention will be further described.
See Fig. 1, a kind of electrolyzer, comprises overall rectangular cell body 1, is positioned at the negative electrode 2 bottom cell body 1, be positioned at the some groups of anode (not shown) that negative electrode 2 top and negative electrode 2 are oppositely arranged, between negative electrode 2 and anode and be positioned at the roasting medium 3 on negative electrode 2 surface.Roasting medium 3 is the mixture of burnt grain and graphite.Wherein, roasting medium 3 is divided into the bottom roasting medium being positioned at negative electrode 2 surface and the surface layer roasting medium be positioned at above bottom roasting medium.The graphite of bottom roasting medium and the weight percent of burnt grain are 6:4 to 9:1; Surface layer roasting medium is filled respectively by the region often organizing anode corresponding negative electrode 2 surface, and the weight percent of the graphite of filling in region and burnt grain is incomplete same.
Anode comprise n group A surface anode and with n group B surface anode, negative electrode 2 surf zone that A surface anode is corresponding is A1, A2, A3 in turn,,, An-2, An-1, An.Negative electrode 2 surf zone that B surface anode is corresponding is B1, B2, B3 in turn,,, Bn-2, Bn-1, Bn.
In the present embodiment, n is even number.The graphite of surface layer roasting medium of filling in A1 and An region and the weight percent of burnt grain are 5:5 to 9:1, the graphite of surface layer roasting medium of filling in B1 and Bn region and the weight percent of burnt grain are the graphite of surface layer roasting medium of filling in 6:4 to 9:1, A2 to An-1 and B2 to Bn-1 region and the weight percent of burnt grain is 4:6 to 1:9.
In the present embodiment, the graphite of surface layer roasting medium of filling in A1 and An region and the weight percent of burnt grain are 5:5.The graphite of surface layer roasting medium of filling in B1 and Bn region and the weight percent of burnt grain are 8:2.The graphite of surface layer roasting medium of filling in A2 to An-1 region and B2 to Bn-1 and the weight percent of burnt grain are 2:8.
Compared with correlation technique, the present invention mainly considers the resistance difference in electrolyzer end and middle, A face and B face, by the ratio of graphite in the roasting medium that rationally arranges A surface anode in electrolyzer, B surface anode and burnt grain, distribution of resistance is optimized, reduce roasting resistance difference, realize electric heating and be evenly distributed.Reduce the thermograde of electrolyzer and the effect of stress deformation.
Above-described is only embodiments of the present invention, it should be pointed out that for the person of ordinary skill of the art at this, without departing from the concept of the premise of the invention, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (5)
1. an electrolyzer, comprises overall rectangular cell body,
Be positioned at the negative electrode bottom described cell body,
Be positioned at the some groups of anodes that described negative electrode top and described negative electrode are oppositely arranged,
Between described negative electrode and described anode and be positioned at the roasting medium of described cathode surface;
Described roasting medium is the mixture of burnt grain and graphite;
It is characterized in that, described roasting medium is divided into the bottom roasting medium being positioned at cathode surface and the surface layer roasting medium be positioned at above described bottom roasting medium;
The described graphite of bottom roasting medium and the weight percent of burnt grain are 6:4 to 9:1; Described surface layer roasting medium is filled respectively by the region often organizing cathode surface corresponding to described anode, and the weight percent of the graphite of filling in described region and burnt grain is incomplete same.
2. electrolyzer according to claim 1, is characterized in that,
Described anode comprise n group A surface anode and with n group B surface anode, described n is even number;
The cathode surface area that described A surface anode is corresponding is A in turn
1, A
2, A
3,,, A
n-2, A
n-1, A
n,
The cathode surface area that described B surface anode is corresponding is B in turn
1, B
2, B
3,,, B
n-2, B
n-1, B
n;
Described A
1and A
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 5:5 to 9:1,
Described B
1and B
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 6:4 to 9:1,
Described A
2to A
n-1and B
2to B
n-1the graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 4:6 to 1:9.
3. electrolyzer according to claim 1, is characterized in that,
Described anode comprise n group A surface anode and with n group B surface anode, described n is odd number;
The cathode surface area that described A surface anode is corresponding is A in turn
1, A
2, A
3,,, A
n-2, A
n-1, A
n,
The cathode surface area that described B surface anode is corresponding is B in turn
1, B
2, B
3,,, B
n-2, B
n-1, B
n;
Described A
1, A
2, A
n-1and A
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 5:5 to 9:1,
Described B
1, B
2, B
n-1and B
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 6:4 to 9:1,
Described A
3to A
n-2and B
3to B
n-2the graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 4:6 to 1:9.
4. electrolyzer according to claim 2, is characterized in that,
Described A
1and A
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 5:5,
Described B
1and B
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 8:2,
Described A
2to A
n-1region and B
2to B
n-1the graphite of surface layer roasting medium and the weight percent of burnt grain of middle filling are 2:8.
5. electrolyzer according to claim 3, is characterized in that,
Described A
1, A
2, A
n-1and A
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 5:5,
Described B
1, B
2, B
n-1and B
nthe graphite of surface layer roasting medium of filling in region and the weight percent of burnt grain are 8:2,
Described A
3to A
n-2region and B
3to B
n-2the graphite of surface layer roasting medium and the weight percent of burnt grain of middle filling are 2:8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146779.8A CN104711640B (en) | 2013-12-12 | 2014-04-14 | Electrolytic cell |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821756 | 2013-12-12 | ||
| CN2013208217563 | 2013-12-12 | ||
| CN201410146779.8A CN104711640B (en) | 2013-12-12 | 2014-04-14 | Electrolytic cell |
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| Publication Number | Publication Date |
|---|---|
| CN104711640A true CN104711640A (en) | 2015-06-17 |
| CN104711640B CN104711640B (en) | 2017-06-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410146779.8A Active CN104711640B (en) | 2013-12-12 | 2014-04-14 | Electrolytic cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020636A (en) * | 2019-12-26 | 2020-04-17 | 山西中铝华润有限公司 | Roasting starting charging method for 500KA aluminum electrolytic cell |
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| JPS56105490A (en) * | 1980-01-25 | 1981-08-21 | Showa Alum Ind Kk | Starting method of aluminum electrolytic furnace |
| RU2037565C1 (en) * | 1991-12-04 | 1995-06-19 | Акционерное общество открытого типа "Всероссийский алюминиево-магниевый институт" | Bottom of aluminium electrolyzer and method for its mounting |
| CN201296786Y (en) * | 2008-11-06 | 2009-08-26 | 沈阳铝镁设计研究院 | Coke grain baking starting structure for pre-baked-anode cell aluminum-reduction cell |
| CN101629304A (en) * | 2008-07-17 | 2010-01-20 | 沈阳铝镁设计研究院 | Coke particle baking startup method for pre-baked anode aluminum electrolytic cell and structure thereof |
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| CN101660174A (en) * | 2009-09-25 | 2010-03-03 | 四川启明星铝业有限责任公司 | Method for preheating electrolyte tank |
| CN101956216A (en) * | 2010-03-13 | 2011-01-26 | 山西关铝股份有限公司 | Method for roasting aluminum electrolysis cell with special cathode structure |
| CN102995058A (en) * | 2012-12-06 | 2013-03-27 | 云南云铝涌鑫铝业有限公司 | Method for paving roasting medium in aluminum electrolysis cell and method for roasting lining |
-
2014
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56105490A (en) * | 1980-01-25 | 1981-08-21 | Showa Alum Ind Kk | Starting method of aluminum electrolytic furnace |
| RU2037565C1 (en) * | 1991-12-04 | 1995-06-19 | Акционерное общество открытого типа "Всероссийский алюминиево-магниевый институт" | Bottom of aluminium electrolyzer and method for its mounting |
| CN101629304A (en) * | 2008-07-17 | 2010-01-20 | 沈阳铝镁设计研究院 | Coke particle baking startup method for pre-baked anode aluminum electrolytic cell and structure thereof |
| CN201296786Y (en) * | 2008-11-06 | 2009-08-26 | 沈阳铝镁设计研究院 | Coke grain baking starting structure for pre-baked-anode cell aluminum-reduction cell |
| CN101660175A (en) * | 2009-07-21 | 2010-03-03 | 兖矿集团有限公司 | Method for roasting and starting aluminum electrolytic cell |
| CN101649469A (en) * | 2009-09-10 | 2010-02-17 | 河南中孚实业股份有限公司 | Double-layer scorched particle energy-saving roasting start method of aluminum electrolysis bath |
| CN101660174A (en) * | 2009-09-25 | 2010-03-03 | 四川启明星铝业有限责任公司 | Method for preheating electrolyte tank |
| CN101956216A (en) * | 2010-03-13 | 2011-01-26 | 山西关铝股份有限公司 | Method for roasting aluminum electrolysis cell with special cathode structure |
| CN102995058A (en) * | 2012-12-06 | 2013-03-27 | 云南云铝涌鑫铝业有限公司 | Method for paving roasting medium in aluminum electrolysis cell and method for roasting lining |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020636A (en) * | 2019-12-26 | 2020-04-17 | 山西中铝华润有限公司 | Roasting starting charging method for 500KA aluminum electrolytic cell |
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| Publication number | Publication date |
|---|---|
| CN104711640B (en) | 2017-06-13 |
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Effective date of registration: 20190116 Address after: 235321 No. 001 Zhangtun Village, Zhangtun Administrative Village, Zhulou Town, Dangshan County, Suzhou City, Anhui Province Patentee after: Zhang Zhenghai Address before: 415700 Chuang Yuan Industrial Park, pan Tang Town, Taoyuan, Changde, Hunan Patentee before: Hunan Chuangyuan Aluminium Industry Co., Ltd. |
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Effective date of registration: 20200927 Address after: 533821 Jingxi, Baise, the Guangxi Zhuang Autonomous Region Patentee after: GUANGXI XINFA ALUMINUM ELECTRIC Co.,Ltd. Address before: 235321 001 Zhang Tun Village, Zhang Tun administrative village, Zhu Lou, Dangshan County, Suzhou, Anhui Patentee before: Zhang Zhenghai |