CN104726898A - Anode carbon block and anode claw connection method and anode carbon block and anode claw - Google Patents

Anode carbon block and anode claw connection method and anode carbon block and anode claw Download PDF

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Publication number
CN104726898A
CN104726898A CN201310693855.2A CN201310693855A CN104726898A CN 104726898 A CN104726898 A CN 104726898A CN 201310693855 A CN201310693855 A CN 201310693855A CN 104726898 A CN104726898 A CN 104726898A
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anode
claw
element block
carbon element
anode carbon
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CN201310693855.2A
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覃国强
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12Anodes
    • C25C3/125Anodes based on carbon

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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 belongs to technical field of aluminum electrolytic cell anode. As the existing anode carbon block and anode claw connection method by casting phosphorus pig iron has the problem of high phosphorus pig iron resistance, high pressure drop, high energy consumption and uncontrollable casting quality, the invention provides a connection method using fixed connecting pieces. The anode carbon block is provided a conductive connecting piece for connecting the anode claw, the anode claw is provided with a connecting seat for withstanding the force from the fixed connecting pieces and realizing the fixed connection of the anode claw and the anode carbon block. The conductive connecting piece is prepared from a material with electrical resistivity smaller than phosphorus pig iron, and thus the pressure drop and energy consumption are greatly reduced; at the same time, the connection operation is easy to operate and control, and additional melting furnace is not needed, so as to reduce energy consumption and labor costs and reduce the cost of production.

Description

Anode carbon element block and the coupling method of anode claw and anode carbon element block and anode claw
Art
The invention belongs to aluminium cell anode technical field, mainly relate to the plain block (1) of anode carbon element block (1) and the coupling method of anode claw (2) and anode carbon and anode claw (2).
Technical background
Anode unit is as the important component part of aluminium cell, be made up of anode carbon element block (1), anode claw (2) and aluminium guide bar (8), be called the heart of electrolyzer, conduct electricity as anode, by iontophoresis electrolyzer in electrolysis process process.Anode carbon element block (1) of current use main with refinery coke, pitch coke for aggregate, coal-tar pitch is that cakingagent manufacture forms, and which is provided with the charcoal bowl that the pawl pin (6) for anode claw (2) is put into.The anode claw (2) generally used is cast steel anode claw, form primarily of pawl body (5) and pawl pin (6) position, bear the load of anode carbon element block (1) after connecting with anode carbon element block (1) and carry the effect of electric current to anode carbon element block (1).At present, the coupling method of anode carbon element block (1) and anode claw (2) adopts the casting phosphorus pig iron to connect, be contained in the phosphorus molten pig iron of the molten state in platform bag, make anode carbon element block (1) and anode claw (2) combination be connected into after being injected between pawl pin (6) and charcoal bowl gap cooling by means of casting molding machine to be integrated, being fixedly connected and circuit communication of both realizations.Why use the phosphorus pig iron to connect, be utilize the phosphorus pig iron pour into a mould before and after thermal expansivity and cold conditions shrinkage coefficient little, avoid forming gap between the phosphorus pig iron and steel pawl and charcoal bowl.Connecting casting cycle is a complicated physical and chemical process, and extraneous factor and internal cause all likely cause different casting results.
Anode carbon element block (1) and anode claw (2) adopt the casting phosphorus pig iron to connect Problems existing to be had:
(1), phosphorus pig iron resistance is large, causes that pressure drop is large, energy consumption is high.In anode drop design, charcoal iron voltage drop value is high, is 120mV, accounts for 40 ~ 50% of whole anode drop.This is because the resistivity of the phosphorus pig iron itself is large, and the resistivity of the phosphorus pig iron is 8.621X10 -4Ω .cm is about iron resistance rate 9.8X10 -7the 1X10 of Ω .cm 3doubly.Ensure the current value that production electrolysis needs, charcoal iron pressure-drop theory design load will reach 120mV, and this theoretical value of pressure drop numeric ratio had in actual measurement is also large, causes energy consumption high;
(2) factor that the quality of the phosphorus pig iron is restricted a lot, not easily accurately controls.If phosphorus pig iron formula is defective, just there will be many places to burst, cause the clamping force of steel pawl and phosphorus pig iron interannular not and the phosphorus pig iron and the loose contact of charcoal bowl wall cause steel pawl to loosen (in the anode unit produced in every month, what anode claw (2) obviously loosened accounts for 2%, becomes waste product.), in electrolysis production, easily cause anode bias current, cause de-pole, have a strong impact on the technical qualification of electrolyzer, bring very large harm to electrolysis production.
(3), adopt the casting phosphorus pig iron to be fixedly connected, the equipment such as phosphorus pig iron smelting furnace must be configured, increase the expenditure of investment cost, upkeep cost, energy cost and labour cost etc.
Summary of the invention
Object of the present invention, just being to provide a kind ofly does not need with anode carbon element block (1) of phosphorus pig iron casting and the coupling method of anode claw (2) and the plain block (1) of anode carbon and anode claw (2), reduce the pressure drop of charcoal iron, reduce energy consumption, reduce production cost.
The present invention includes the plain block (1) of anode carbon element block (1) and the coupling method of anode claw (2) and anode carbon and anode claw (2) three part.
The coupling method part of anode carbon element block (1) of the present invention and anode claw (2) realizes like this, as Fig. 1 signal, anode carbon element block (1) and anode claw (2) adopt fixed coupling unit (3) connect, exit fixed coupling unit (3) can realize anode carbon element block (1) and anode claw (2) separate.
The fixed coupling unit (3) that anode carbon element block (1) of the present invention and anode claw (2) coupling method adopt, can adopt screw thread or wedge surface screens to connect.
The fixed coupling unit (3) that anode carbon element block (1) of the present invention and anode claw (2) coupling method adopt can be the card-bit part of bolt or nut or band wedge surface.
The coupling method of anode carbon element block (1) of the present invention and anode claw (2) can also be like this, copper backing or aluminium backing or painting conductive liquid, conductive paste is added, to increase the conductivity of contact surface between the contact surface of anode carbon element block (1) and anode claw (2).
Anode carbon of the present invention element block (1) part is such realization, as Fig. 2 signal, anode carbon element block (1) is provided with the conductive attachment part (4) for connecting with anode claw (2).Conductive attachment part (4) is fixed on anode carbon element block (1), forms circuit communication with anode carbon element block (1).
The conductive attachment part (4) of anode carbon element block (1) of the present invention can like this, make of iron or copper product.
The conductive attachment part (4) of anode carbon element block (1) of the present invention can like this, be arranged after the shaping pre-buried or plain block of anode carbon (1) before of anode carbon element block (1) is shaping.
The conductive attachment part (4) of anode carbon element block (1) of the present invention can also be like this, take Technology as control temperature, apply conductive paste or conductive liquid etc., make conductive attachment part (4) and anode carbon element block (1) form good circuit communication and ensure the position of conductive attachment part (4) on anode carbon element block (1).As utilized the position of Template Location conductive attachment part (4) on anode carbon element block (1), and the heat trnasfer of template is utilized to make conductive attachment part (4) and anode carbon element block (1) form good circuit communication.
Anode claw of the present invention (2) part is such realization, as Fig. 3 signal, anode claw (2) is provided with the reactive force bearing fixed coupling unit (3) and makes the connection seat (7) that anode claw (2) and anode carbon element block (1) are fixedly connected.
The connection seat (7) of anode claw of the present invention (2) can like this, is that one or adopt is welded or fastening piece is positioned on anode claw (2) with anode claw (2).
Spend in production and application at the temperatures as high more than 800 of electrolyzer, because the thermal expansion ratio of anode carbon element block (1) casts the thermal expansion ratio of pawl body (5) than little than anode claw (2) steel, the heat expansion elongation of identical length, identical temperature increase anode carbon element block (1) limits the elongation of steel casting pawl body (5) than the little of steel casting pawl body (5), Here it is in use there is diastrophic reason in cast steel anode claw (2), also apparent, anode carbon element block (1) bears anode claw (2) sizable deforming force.The present invention bears the deforming force of anode claw (2) for slowing down conductive attachment part (4), can use the patent No. be 201020646847.4 anode claw better.This anode claw can the functional separation of the load and conveying electric current of bearing anode carbon lump, come by pawl body (5) and electric-conductor (9) respectively, pawl body (5) can adopt plate prepared material to make, and heat rises to extend and laterally can bloat when being longitudinally obstructed in the past and reduce the reactive force that antianode charcoal element block (1) applies.The circuit of electric-conductor (9) can adopt flexible cable to make, and avoids occurring that heat rises the reactive force extending and apply pawl pin (6).
The present invention to be risen the reactive force extending and apply conductive attachment part (4) for reducing further pawl body (5) heat, conductive attachment part (4) and anode carbon element block (1) is made to keep good circuit communication state, can improve like this anode claw that the patent No. is 201020646847.4, the part that pawl body (5) is positioned between two pawl pin (6) positions is done forming V-shape, to rise the direction of extending or the pilot hole of pawl body (5) and pawl pin (6) is made pawl body (5) length direction heat to rise the elongated groove opening structure that elongation do not restrict by pawl pin (6) to change heat.
The present invention to be risen the reactive force extending and apply conductive attachment part (4) for reducing anode claw (2) heat further, conductive attachment part (4) and anode carbon element block (1) is made to keep good circuit communication state, can also improve like this anode claw that the patent No. is 201020646847.4, the part that electric-conductor (9) is positioned between two pawl pin (6) positions is done forming V-shape, with change heat rise extend direction.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment schematic diagram of anode carbon of the present invention element block (1) and anode claw (2) coupling method;
Fig. 2 is the structural representation of anode carbon element block (1) of Fig. 1;
Fig. 3 is the structural representation of the anode claw (2) of Fig. 1;
Fig. 4 is a kind of structural representation (figure Anodic pawl connects with aluminium guide bar, and the anode claw left side unlids and pawl body (5) has done partial cutaway) after improving the anode claw of ZL201020646847.4;
Fig. 5 is the vertical view of Fig. 4;
Drawing reference numeral illustrates: 1-anode carbon element block, 2-anode claw, 3-fixed coupling unit, 4-conductive attachment part, 5-pawl body, 6-pawl pin, 7-connection seat, 8-aluminium guide bar, 9-electric-conductor
Embodiment
Specific embodiments of the invention are described in detail below in conjunction with accompanying drawing.
Fig. 1 is the example structure schematic diagram that anode carbon of the present invention element block (1) and anode claw (2) coupling method adopt bolt to connect as fixed coupling unit (3).At the conductive attachment part (4) that the inner pre-buried iron material of anode carbon element block (1) makes, conductive attachment part (4) is provided with the threaded hole that fixed coupling unit (3) connects.The pawl pin (6) of anode claw (2) is provided with connection seat (7), and connection seat (7) is welded on pawl pin (6), which is provided with the through hole passed for fixed coupling unit (3).When anode carbon element block (1) and anode claw (2) assembling connect, pawl pin (6) is put into the upper pre-opened hole supplying anode claw (2) pawl foot face and conductive attachment part (4) surface contact of anode carbon element block (1), then fixed coupling unit (3) is used to be screwed into the threaded hole on conductive attachment part (4) by the through hole on connection seat, tighten after putting in place and just can realize being fixedly connected of anode carbon element block (1) and anode claw (2), the simultaneously end face of pawl pin (6) of anode claw (2) and the intimate surface contact of conductive attachment part (3), realize the circuit communication of anode carbon element block (1) and anode claw (2), thus anode carbon element block (1) and being fixedly connected and circuit communication of anode claw (2) is realized.
The effect that the present embodiment reaches, the iron material of conductive attachment part (4) than low 1000 times of phosphorus pig iron resistivity is made, and resistance is little, and pressure drop is low, thus reduces energy consumption; Meanwhile, without the phosphorus pig iron, do not need the equipment such as configuration smelting furnace, also can economize fusing energy cost, equipment repair expense, labour cost etc., reduce production cost.

Claims (9)

1. a coupling method for anode carbon element block (1) and anode claw (2), is characterized in that adopting fixed coupling unit (3) to connect.
2. coupling method as claimed in claim 1, is characterized in that described fixed coupling unit (3) can adopt screw thread or wedge surface screens to connect.
3. coupling method as claimed in claim 2, is characterized in that described fixed coupling unit (3) can be the card-bit part of bolt or nut or band wedge surface.
4. coupling method as claimed in claim 1, is characterized in that adding copper backing or aluminium backing or painting conductive liquid, conductive paste between the contact surface of anode carbon element block (1) and anode claw (2).
5. an anode carbon element block, primarily of with refinery coke, pitch coke for aggregate, coal-tar pitch is that cakingagent manufacture forms, and it is characterized in that it is provided with conductive attachment part (4) for connecting with anode claw (2).
6. anode carbon element block as claimed in claim 5, is characterized in that conductive attachment part (4) iron or copper product make.
7. an anode claw, form primarily of pawl body (5) and pawl pin (6) position, it is characterized in that being provided with at it the reactive force that bears fixed coupling unit (3) and making the connection seat (7) that anode claw (2) and the plain block (1) of anode carbon are fixedly connected.
8. anode claw as claimed in claim 7, it is characterized in that the anode claw to the patent No. is 201020646847.4 can improve like this, pawl body (5) part be positioned between two pawl pin (6) positions is done forming V-shape or the pilot hole of pawl body (5) and pawl pin (6) is made pawl body (5) length direction heat and rises and extend by the elongated groove opening structure that pawl pin (6) restricts.
9. anode claw as claimed in claim 7, is characterized in that the anode claw to the patent No. is 201020646847.4 can also improve, the part that electric-conductor (9) is positioned between two pawl pin (6) positions is done forming V-shape.
CN201310693855.2A 2013-12-18 2013-12-18 Anode carbon block and anode claw connection method and anode carbon block and anode claw Pending CN104726898A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105543896A (en) * 2016-02-26 2016-05-04 周俊和 Prebaking aluminum cell anode set structure
CN105543895A (en) * 2016-02-26 2016-05-04 周俊和 Mechanical anode steel claw structure for prebaking aluminum cell
CN105803487A (en) * 2016-02-26 2016-07-27 周俊和 Pre-baked aluminum electrolysis production method capable of preventing anode scrap from being generated
CN106757165A (en) * 2017-02-19 2017-05-31 周俊和 Anode steel claw strainer
CN106676580B (en) * 2017-02-19 2021-04-13 周俊和 Method and structure for on-line connection of prebaked anode aluminum electrolysis anode

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JPS5925196A (en) * 1982-08-04 1984-02-09 昭和電工株式会社 Carbon electrode connector
CN101660177A (en) * 2009-04-08 2010-03-03 高德金 Novel anode electric-conducting device for aluminum electrolytic cell
CN101886275A (en) * 2009-05-13 2010-11-17 高德金 Prebaked anode carbon block structure of aluminum electrolysis cell
CN102108525A (en) * 2011-04-11 2011-06-29 商丘市鑫科节能技术服务有限公司 Method for connecting electrolytic aluminum anode without pouring
CN202030836U (en) * 2010-12-08 2011-11-09 陈小燕 Energy saving and consumption reducing positive electrode claw
CN102534675A (en) * 2010-12-21 2012-07-04 贵阳铝镁设计研究院有限公司 Anode for electrolytic aluminum
CN202558945U (en) * 2012-02-09 2012-11-28 赵丑娃 Casting-free detachable spirally-assembled anode yoke for aluminum electrolysis

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Publication number Priority date Publication date Assignee Title
JPS5925196A (en) * 1982-08-04 1984-02-09 昭和電工株式会社 Carbon electrode connector
CN101660177A (en) * 2009-04-08 2010-03-03 高德金 Novel anode electric-conducting device for aluminum electrolytic cell
CN101886275A (en) * 2009-05-13 2010-11-17 高德金 Prebaked anode carbon block structure of aluminum electrolysis cell
CN202030836U (en) * 2010-12-08 2011-11-09 陈小燕 Energy saving and consumption reducing positive electrode claw
CN102534675A (en) * 2010-12-21 2012-07-04 贵阳铝镁设计研究院有限公司 Anode for electrolytic aluminum
CN102108525A (en) * 2011-04-11 2011-06-29 商丘市鑫科节能技术服务有限公司 Method for connecting electrolytic aluminum anode without pouring
CN202558945U (en) * 2012-02-09 2012-11-28 赵丑娃 Casting-free detachable spirally-assembled anode yoke for aluminum electrolysis

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Title
张庆刚 等主编: "《炭素煅烧工》", 31 October 2013, 冶金工业出版社 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105543896A (en) * 2016-02-26 2016-05-04 周俊和 Prebaking aluminum cell anode set structure
CN105543895A (en) * 2016-02-26 2016-05-04 周俊和 Mechanical anode steel claw structure for prebaking aluminum cell
CN105803487A (en) * 2016-02-26 2016-07-27 周俊和 Pre-baked aluminum electrolysis production method capable of preventing anode scrap from being generated
CN106757165A (en) * 2017-02-19 2017-05-31 周俊和 Anode steel claw strainer
CN106757165B (en) * 2017-02-19 2019-05-03 周俊和 Anode steel claw strainer
CN106676580B (en) * 2017-02-19 2021-04-13 周俊和 Method and structure for on-line connection of prebaked anode aluminum electrolysis anode

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Application publication date: 20150624