CN103014766A - Large aluminum electrolytic bath structure - Google Patents
Large aluminum electrolytic bath structure Download PDFInfo
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- CN103014766A CN103014766A CN2013100181036A CN201310018103A CN103014766A CN 103014766 A CN103014766 A CN 103014766A CN 2013100181036 A CN2013100181036 A CN 2013100181036A CN 201310018103 A CN201310018103 A CN 201310018103A CN 103014766 A CN103014766 A CN 103014766A
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Abstract
A large aluminum electrolytic bath structure comprises an anode carbon block conducting device formed by anode carbon, an aluminum guide rod and an anode steel claw, a large anode busbar, a horizontal smoke cover plate, an aluminum electrolytic bath shell and the like and is characterized in that height of from the electrolytic bath horizontal smoke cover plate to an electrolytic bath horizontal wing plate ranges from 1300mm to 1450mm. The height of the large-section anode carbon block used by the electrolytic bath ranges from 740mm to 800mm, and the width of the electrolytic bath ranges from 740mm to 800mm. Accordingly, electrode changing cycle of the anode carbon block is larger that 40 days, and electrode block changing number of the aluminum electrolytic bath is smaller than 1.1 each day. Service cycle of the carbon block is prolonged, comprehensive cost of electrolytic aluminum production is lowered due to decreasing of electrode changing amount, and maximization of electrolytic aluminum productivity effect is achieved.
Description
Technical field: a kind of large-scale aluminum electrolytic cell structure is mainly used in design, making, production and the technological transformation of the above pre-calcining electrolytic cell of 400K A.
Background technology: the large-scale aluminum electrolytic cell that existing general 400K A is above, at cathode structure of aluminium cell, be to realize on the long-pending basis that enlarges of conductivity surface of cathode, corresponding with the expansion of aluminium electrolytic cell cathode electricity conductive area, the area of anode electric-conducting device for aluminum electrolytic cell also increases thereupon, namely enlarging the anode conducting area with the quantity that increases the carbon piece, that what adopt is that realize on the basis on anode block height basis is more, the 400KA aluminium cell of large-scale general now adopts 48 groups of single anode design way double-lines to design, be that every group of anode large bus bar hung 24 groups of anode blocks. but the quantity of anode block increases, its height change is little, and the height of anode block still is the design less than 650mm.Consume 15mm calculating every day by anode, the average life cycle of anode block is about 30 days.Calculate by 48 groups of anodes of every aluminium cell, the change poles piece number of average every day is 1.5, and the change poles frequency that namely is called for short every day is 1.5.
In the ordinary course of things, the height of anode block, determine the use replacement cycle of anode block, the now increase of the overall conductive area of anode of large-scale aluminum electrolytic cell, in the situation that its anode block uses the replacement cycle constant, because the increase of its carbon number of blocks certainly will cause the increase of the replacement frequency of anode block.
Though the advantage that large-scale aluminum electrolytic cell has overall investment to reduce, anode block cross dimensions are the cycle in work-ing life that height and width design are determining anode block.In the design of large-scale aluminum electrolytic cell, the subject matter reason that affects the increasing design of anode height and width is:
(1) increase of anode block height may cause the increase of anode drop.
(2) horizontal smoke cover plate is to the height of electrolytic cell housing, and size is height-limited when only having the 1250mm dress to change anode.
(3) anode covering and heat insulating material is difficult to uniform fold, may increase plate resistance.
(4) affect the preheating of carbon piece and the exhaust of anode bottom.
(5) increase of anode block weight easily causes coming off of explosion welding sheet.
Owing to being subject to the impact of above-mentioned negative factor and the restriction of mentality of designing, cause the design of structure of large-scale aluminum electrolytic cell and the cycle in work-ing life of aluminum anode carbon piece and the change poles frequency of every day still to rest on the state of the art of small-sized traditional aluminium cell, be not expanded and innovate, so large-scale aluminum electrolytic cell anode conducting system still exists the generation of lower column defects.
(1) the anode scrap amount is large, and carbon piece utilization ratio is low:
(2) frequent Cao of change poles grasp change poles workman operation and mechanical movement intensity larger,
(3) volume of the circular flow of the aluminium guide bar of anode conducting device and anode steel jaw is large, thereby causes the aluminium cell cost of investment to strengthen.
(4) the anode block assembling is that ferrophosphorus casting cost increases.
(5) change frequently that anode causes aluminium cell thermal equilibrium and electric current is uniform is damaged, cause the electrolysis of aluminum power consumption to increase.
Summary of the invention: energy-saving and cost-reducing, reduce cost, than lower production cost, realize maximizing the benefits, be aluminium electrolysis enterprise pursue ultimate aim, to continue to use the anode change cycle that the light section anode causes short in order to overcome the above large-scale aluminum electrolytic cell of existing 400K A, produces and above-mentioned shortcoming that power consumption cost strengthens.The invention provides a kind of technical scheme that is suitable for the design of new large-scale aluminum electrolytic cell innovation structure overcomes and adds the technical guarantee measure that high anode is difficult to realize.
The parts contextures such as the anode block electric installation that a kind of large-scale aluminum electrolytic cell is comprised of anode carbon, aluminium guide bar, anode steel jaw and anode large bus bar, horizontal smoke cover plate, aluminium cell housing, it is characterized in that: aluminium cell adopts the anode block height to want between 740mm to 800 millimeter, large section anode block between the width 740mm to 800mm, cause the anode change cycle of anode block greater than 40 days, its aluminium cell horizontal smoke cover plate to the height of the horizontal wing plate of aluminum cell casing between the 1300mm to 1450mm.
Based on technique scheme, large-scale aluminum electrolytic cell adopts 40 groups of anode blocks, is that every of two anode large bus bar of aluminium cell hang 20 groups, the height of its single group anode block is greater than 740mm, width is greater than 740mm, the anode change cycle that causes anode block is more than 40 days, and its aluminium cell change poles every day piece number is less than 1.1.
Based on technique scheme, large-scale aluminum electrolytic cell adopts greater than the high anode that adds more than the 750mm, for the new anode aluminium cell of can packing into, its aluminium cell horizontal smoke cover plate is the height at edge situation about must increase along with the carbon piece and increasing to the aluminium electrolysis cell housing, is higher than generally speaking 1300mm.
Based on technique scheme, large-scale aluminum electrolytic cell adopts greater than the high anode that adds more than the 750mm, to increase the resistance value eliminated (volts lost that namely increases) because of the carbon piece and can adopt overstriking anode steel jaw diameter and change the ferrophosphorus ring shape in order to eliminate, solved with the method that reduces anode block and be connected with anode electric installation connection volts lost.
Based on technique scheme, large-scale aluminum electrolytic cell adopt greater than more than the 750mm increase and width greater than the large section anode block more than the 700mm, for overcoming the slow problem of the exhaust of anode bottom and anode preheating, can adopt the way of opening middle slot in the anode block bottom to be solved.
Based on technique scheme, large-scale aluminum electrolytic cell adopt greater than more than the 750mm increase and width greater than the large section anode block more than the 740mm, for preventing increasing because of weight, the transition of aluminum steel explosion welding sheet connects and to come off, and adopts vertical type explosive welding sheet or strengthen being connected explosion welding sheet between anode steel jaw and the aluminium guide bar to be connected with aluminium guide bar.
Large-scale aluminum electrolytic cell adopts greater than increasing more than 750 millimeters and 740 millimeters purposes of widening the section technical scheme enforcement of anode block, is the life cycle that prolongs the carbon piece, reduce because the change poles amount is large, and the loss that brings.This technical scheme, owing to having broken away from the restriction of existing anode block section structure size, can make existing large-scale aluminum electrolytic cell namely greater than structure design, constructions cost and Aluminium Electrolysis and the anode assembling cost decrease of 400KA aluminium cell, reduce the electrolytic aluminum cost thereby reach, improve the purpose of aluminium electrolysis enterprise economic benefit.
Description of drawings:
A kind of large-scale aluminum electrolytic cell structure technology of the present invention scheme illustrates in conjunction with the accompanying drawings and embodiments.Its technical scheme and feature are then more clear.
Fig. 1: be the partial front elevation view of the embodiment of the invention.
Fig. 2: be the orthographic plan schematic diagram of Fig. 1.
Shown in its figure: (1) anode block, (2) anode steel jaw, (3) explosion welding sheet, (4) aluminium guide bar, (5) anode large bus bar, (6) horizontal smoke cover plate, (7) aluminium cell housing, the horizontal wing plate of (8) aluminium cell, (9) ferrophosphorus ring.
Specific embodiment:
Technical solution of the present invention is mainly used aluminium greater than making and the installation of the technological transformation of 400KA aluminium cell and new electrolyzer, and its technical scheme and feature are then clearer in conjunction with the aluminium cell transformation of existing 400KA.
Existing 400KA aluminium cell anode carbon block aluminium guide bar group has 48 groups, and the height of its anode block (1) is 650mm, and the width of anode block (1) is 650mm, and the length of anode block is 1550mm.The total area of the horizontal projection of its 48 groups of anode blocks (1) is 483600 square centimeters.Its anode block calculates by consuming 15.5mm every day, and the anode scrap height is pressed 150mm and calculated, and be 32 days the mean life of anode block. change 1.5 on anode average every day.
Adopt technical solution of the present invention, the height of anode block (1) is set to 760mm, the width of anode block is 780mm, the anode block of whole aluminium cell adds up to 40 groups, length at anode block is in the constant situation of 1550mm, its anode block calculates by consuming 15.5mm every day, and the anode scrap height is that 150mm calculates, and be 40 days the mean life of anode block. and then change the quantity of changing anode block average every day and only have 1.
Take the 400KA large-scale aluminum electrolytic cell as example: its horizontal smoke cover plate (6) to the height of aluminium cell housing horizontal tail plate (8) greater than the height of 1300mm. anode block as between the 750mm to 800mm, the width of anode block is between 740mm800mm. can make the anode change cycle of aluminium cell anode carbon block reach 40 days.Be to change 1 anode average every day.Adopt this design to adopt the anode block aluminium cell of high 650mm to compare with now general maximum:
(1) the turnover quantity of anode steel jaw and aluminium guide bar can reduce about 30%.
(2) utilization ratio of anode block significantly improves, and anode scrap can reduce about 30%.
(3) workload of anode assembling and clear anode scrap can reduce about 30%.
(4) the casting cost reduction about 30% of ferrophosphorus.
(5) investment in fixed assets of anode steel jaw and aluminium guide bar can reduce about 30%.
(6) owing to the minimizing of change poles number of times, can reduce the thermosteresis of aluminium cell, be conducive to the thermal equilibrium of electrolyzer.
Its economic benefit is very considerable.
The technological line of this technical scheme is, in order to prolong the anode block anode change cycle, subtract few change poles quantity of every day, can adopt to add high anode and strengthen the mode that the anode section combines and carry out, namely guarantee that anode aggregate level shadow area is constant, guarantee that Current distribution in anode is even, the anode drop increasing amount is in the situation that working condition and technico-economical comparison optimization, adopt the design that adds high anode as far as possible, reduce the comprehensive cost of Aluminum Electrolysis Production, to guarantee the maximization of Aluminum Electrolysis Production benefit.
Claims (2)
1. the parts contexture such as the anode block electric installation that formed by anode carbon, aluminium guide bar, anode steel jaw of a large-scale aluminum electrolytic cell and anode large bus bar, horizontal smoke cover plate, aluminium cell housing, it is characterized in that: the aluminium cell horizontal smoke cover plate to the height of the horizontal wing plate of aluminum cell casing between the 1300mm to 1450mm, adopt the anode block height between 740mm to 800 millimeter, the large section anode block of width between 740mm to 800mm.
2. according to claim 1 its constitutional features of large-scale aluminum electrolytic cell be: large-scale aluminum electrolytic cell adopts 40 groups of anode blocks, is that every of two anode large bus bar of aluminium cell hang 20 groups, the height of its single group anode block is 750mm, width is greater than 780mm, the anode change cycle that causes anode block is more than 40 days, and aluminium cell change poles every day piece number is less than 1.1.
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| CN2013100181036A CN103014766A (en) | 2013-01-18 | 2013-01-18 | Large aluminum electrolytic bath structure |
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| CN2013100181036A CN103014766A (en) | 2013-01-18 | 2013-01-18 | Large aluminum electrolytic bath structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878412A (en) * | 2015-06-05 | 2015-09-02 | 青海百河铝业有限责任公司 | Novel energy-saving heightening anode group for aluminium electrolytic bath |
| CN107400902A (en) * | 2016-05-18 | 2017-11-28 | 王晓宇 | Engineering method is increased in jacking to aluminum electrolysis cell upper part structure online |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748436A (en) * | 2008-11-27 | 2010-06-23 | 沈阳铝镁设计研究院 | Prebaked anode aluminum electrolytic bath |
| CN202450169U (en) * | 2012-01-09 | 2012-09-26 | 济南澳海炭素有限公司 | Very-large pre-baked anode for aluminum electrolysis |
| CN203393238U (en) * | 2013-01-18 | 2014-01-15 | 新疆农六师煤电有限公司 | Large aluminum electrolytic tank structure |
-
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- 2013-01-18 CN CN2013100181036A patent/CN103014766A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748436A (en) * | 2008-11-27 | 2010-06-23 | 沈阳铝镁设计研究院 | Prebaked anode aluminum electrolytic bath |
| CN202450169U (en) * | 2012-01-09 | 2012-09-26 | 济南澳海炭素有限公司 | Very-large pre-baked anode for aluminum electrolysis |
| CN203393238U (en) * | 2013-01-18 | 2014-01-15 | 新疆农六师煤电有限公司 | Large aluminum electrolytic tank structure |
Non-Patent Citations (1)
| Title |
|---|
| 霍岱明: ":预焙阳极铝电解槽阳极与阴极碳块尺寸的优化设计", 《轻金属》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878412A (en) * | 2015-06-05 | 2015-09-02 | 青海百河铝业有限责任公司 | Novel energy-saving heightening anode group for aluminium electrolytic bath |
| CN107400902A (en) * | 2016-05-18 | 2017-11-28 | 王晓宇 | Engineering method is increased in jacking to aluminum electrolysis cell upper part structure online |
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Owner name: XINJIANG SIXTH AGRICULTURAL DIVISION COAL POWER CO Free format text: FORMER OWNER: QI ZONGHUA Effective date: 20131216 |
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Effective date of registration: 20131216 Address after: 831302 the Xinjiang Uygur Autonomous Region Wujiaqu 102 Mission East Industrial Park Applicant after: XINJIANG NONGLIUSHI COAL POWER CO., LTD. Address before: 831302 the Xinjiang Uygur Autonomous Region Wujiaqu agricultural division six East Industrial Park Coal Co. Ltd. Applicant before: Qi Zonghua |
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Application publication date: 20130403 |