CN102199781A - Cathode steel rod constructed by steel plate combination - Google Patents
Cathode steel rod constructed by steel plate combination Download PDFInfo
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- CN102199781A CN102199781A CN2011101419305A CN201110141930A CN102199781A CN 102199781 A CN102199781 A CN 102199781A CN 2011101419305 A CN2011101419305 A CN 2011101419305A CN 201110141930 A CN201110141930 A CN 201110141930A CN 102199781 A CN102199781 A CN 102199781A
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Abstract
The invention relates to a cathode steel rod constructed by steel plate combination, is mainly applied in the construction of a cathode carbon block steel rod assembly of an aluminum electrolysis cell as well as the manufacture and design of the cathode steel rod, and the cathode steel rod is one electroconductive component of the cathode carbon block steel rod assembly. The invention is characterized by adopting steel plate combination to carry out variable structure combination on the section shape and structure form of the cathode steel rods installed in an identical communicated steel rod tank below a cathode carbon block along the length direction with a steel plate, so as to adjust and balance the distribution of the resistance value (voltage drop) of the cathode carbon block steel rod assembly after integral combination by using a method for adjusting the contact combining interface area of iron and carbon between the cathode steel rod and the sidewall of a cathode carbon block steel rod tank and iron-carbon interface combining mode, thus eliminating or reducing the horizontal current of the aluminum electrolysis cell and intensifying the vertical current.
Description
A kind of cathode bar with the steel plate composite construction of technical field, the structure and the negative electrode of main application and aluminium electrolysis cell cathode carbon block rod iron group are one of conductive components of cathode block rod iron group.
The existing general aluminium electrolysis cell cathode carbon block rod iron group of technical background is made of cathode block, cathode steel bar and the bonding of the conduction between the two thickener.Essential structure is the bottom at cathode block, has the prismatic cathode steel bar groove that highly equates along carbon block length direction, common cathode steel bar of uniform cross section is smash with conduction bonding thickener along its length pricked admittedly in the steel bar trough of carbon piece bottom again.
Cathode steel bar arranges to have following function along its length in the steel bar trough of cathode block bottom
1 realizes being connected the function of transition between carbon graphite electrical conductor cathode block and the big bus of aluminum metal.
2 utilize the resistivity of metal rod iron to be lower than the characteristics of cathode block resistivity, make the electric current of cathode block upper surface, vertical equal altitudes at cathode block and cathode steel bar upper surface equates, (be under the situation in the length of cathode block middle part to outside big bus junction, electrolytic bath shell side, reduce the generation of horizontal current by the less cathode steel bar of resistance value with level conduction distance is long.
Existing cathode block rod iron group mainly contains following shortcoming and defect;
Adopt between 1 anode rod iron and the cathode block to connect, the resistance value between its iron carbon interface is bigger, on average about 130 millivolts, accounts for half of whole cathode block rod iron group.Cause the major cause of this phenomenon to have to be: the surface of cathode steel bar easily forms oxidation in roasting process, and the conduction bonding thickener material between the iron carbon interface is difficult to form conduction with the steel material and oozes body altogether.
2 in same cathode block steel bar trough, iron carbon contact area between cathode steel bar and the cathode block rod iron cell wall, the outer surface area that is cathode steel bar is identical, promptly carry out interfacial conductive and connect with uniform cross section, the long-pending conduction bonding of outer surface thickener, conduction distance from the electrolyzer middle part to cathode steel bar and the big bus of negative electrode is longer in addition, and because the resistivity of cathode steel bar self material is higher, cathode steel bar self is produced just produce horizontal current, directly influence or cause the generation of the aluminum liquid horizontal electric current in the molten bath, aluminum cell cathode inner lining top.Thereby cause the minimizing of aluminium cell internal vertical electric current, the reduction of current efficiency.
Summary of the invention is in order to reduce the generation of the horizontal current of aluminium liquid and dielectric substrate in the aluminum cell cathode inner lining molten bath, the present invention is according to the practical experience of ohm theorem and cathode block structure, designed a kind of to reduce the iron carbon connection resistance value of cathode block rod iron group middle part current enter, the relative cathode block end current output terminal iron carbon of heightening connects resistance value, the whole constructing technology scheme that reduces the cathode block rod iron group of iron carbon contact drop.
This scheme is that core technology is; Cathode steel bar with steel plate layering composite construction, under the contour constraint condition of cathode block steel bar trough, with increasing adjustment cathode steel bar surface-area and iron carbon interface in conjunction with Method for Area, reach and adjust iron carbon bonding interface in conjunction with resistance value, cause each one of upper surface of cathode of aluminium electrolytic bath carbon piece rod iron group, along cathode block length direction each point position is each interval, is that volts lost equates to cathode steel bar with the current output terminal resistance value of the big bus of negative electrode, to realize eliminating or alleviating the purpose of horizontal current of aluminum cell.
A kind of cathode steel bar with the steel plate composite construction, adopt steel plate layering composite construction, setting is installed in same the cathode steel bar in the cathode block bottom steel bar trough that communicates, along its length direction, with steel plate with the section form of cathode steel bar and the structure formation tectonic association that makes a variation; So that contact bonding interface area and iron carbon interface method with iron carbon between the cathode block steel bar trough sidewall in conjunction with structural form with adjusting cathode steel bar, cathode block rod iron group resistance value is the distribution of volts lost after the adjustment balance overall package, reach elimination or weakened horizontal current of aluminum cell, strengthened the purpose of vertical current.
A kind of cathode steel bar with the steel plate composite construction, cathode steel bar is to adopt steel plate layering composite construction to form, cause cathode steel bar to be arranged on the expansion girth in the corresponding conducting metal of cathode block bottom centre position current enter cross section, greater than the expansion girth in cathode steel bar current outlet end conducting metal cross section, promptly cathode steel bar advances the metallic conduction member that the basal area of the iron carbon contact interface of electric section is progressively reduced to current output terminal by current enter.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, adopt the processing of polylith steel plate to be configured to, available adjustment cathode steel bar and cathode block steel bar trough sidewall iron carbon contact interface area size, and the structure section structure form changes, adjust the different interval resistance value of cathode block rod iron group length direction, in order to eliminate or to weaken the metallic conduction parts of horizontal current of aluminum cell, it is after making up with cathode block, can reach elimination or weaken horizontal current of aluminum cell, strengthen the purpose of vertical current.
According to technique scheme, be arranged on the cathode steel bar in the steel bar trough of same cathode block bottom, form with the steel plate composite construction more than two, on high direction be about layered structure, or be that left-right symmetry is constructed in the horizontal direction.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction is shaped on hole or groove on the steel plate of its cathode steel bar.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, the upper surface of its cathode steel bar is the staged horizontal tectonics.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, the surface-area of its cathode steel bar, promptly iron carbon bonded area by cathode block middle part correspondence position, progressively reduces to the conduction output terminal end of cathode steel bar.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, its cathode steel bar is begun by the correspondence position at cathode block middle part, and the horizontal projection to extend along its length the conduction output terminal end of cathode steel bar is the trapezoidal configuration of inner wide and outer narrow.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction is provided with between the two block plate interlayers seam of its structure cathode steel bar and supports backing plate or stopping composition.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, it is by a cathode steel bar of the current output terminal of cathode steel bar, current enter in the cathode block bottom, but bifurcated configurations becomes the cathode steel bar structure more than two, promptly in the steel bar trough of the bottom of cathode block, current enter is got several the cathode steel bars that separate, confluxing is configured to a cathode steel bar and conducts electricity output.
According to technique scheme, a kind of cathode steel bar with the steel plate composite construction, its cathode steel bar is made into ladder structure for dividing left-right symmetry formula structure with two block plate symmetries.
A kind of cathode steel bar of technical solution of the present invention with the steel plate composite construction, behind the structure of application and aluminium electrolysis cell cathode carbon block rod iron group, can make the iron carbon contact area of rod iron, it is the pairing surface-area of the interval section of cathode steel bar, along the cathode steel bar length direction, by the cathode block middle part both current enter of allocation, to conduction output terminal, progressively reduction; Behind carbon wall join-together structure with iron carbonaceous conductive bonding thickener and cathode block steel bar trough, can make upper surface each point, the section along its length of cathode block rod iron group, it is the upper surface each point section along its length of cathode block, equate to the voltage drop value of cathode steel bar exit point, promptly the numerical value of resistance value equate or difference less; After being used to construct aluminum cell cathode inner lining, the horizontal current in the aluminium cell that can make weakens or disappears, and improves negative electrode vertical current intensity thereby reach, and reduces the electrolytic aluminum power consumption, improves the purpose of electrolysis of aluminum current efficiency.
A kind of its technical scheme content of cathode steel bar and technical characterictic with the steel plate composite construction of description of drawings the present invention is then more clear in conjunction with its following description of drawings.
The vertical planning drawing of the embodiment 1 of the cathode steel bar of a kind of usefulness of Fig. 1 the present invention steel plate composite construction.
Fig. 2 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 2 of the cathode steel bar of a kind of usefulness of Fig. 3 the present invention steel plate composite construction.
Fig. 4 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 3 of the cathode steel bar of a kind of usefulness of Fig. 5 the present invention steel plate composite construction.
Fig. 6 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 4 of the cathode steel bar of a kind of usefulness of Fig. 7 the present invention steel plate composite construction.
Fig. 8 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 5 of the cathode steel bar of a kind of usefulness of Fig. 9 the present invention steel plate composite construction.
Figure 10 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 6 of the cathode steel bar of a kind of usefulness of Figure 11 the present invention steel plate composite construction.
Figure 12 is the orthographic plan of Fig. 1.
The vertical planning drawing of the embodiment 7 of the cathode steel bar of a kind of usefulness of Figure 13 the present invention steel plate composite construction.
Figure 14 is the orthographic plan of Fig. 1.
Shown in its figure;
1 steel plate, 2 backing plates, 3 holes, 4 lines of rabbet joint, 5 interlayers seam, 6 bonding thickeners, 7 welding holes.
Specific embodiment
Embodiment 1: as shown in Figure 1 and Figure 2, a kind of cathode steel bar with the steel plate composite construction welds composite construction by two block plates (1) and backing plate (2) up and down and forms.Bore on the steel plate and be shaped on the hole (3) and the line of rabbet joint (4), interlayer seam (5) is arranged between two block plates up and down, after group is finished manufacturing, after being installed in the cathode block steel bar trough with rod iron the cathode steel rod iron, conduction bonding thickener has been made in interlayer seam (5) the interior filling between the hole that is provided with on its cathode steel bar (3), the line of rabbet joint (4) and the steel plate firm by ramming.
Cathode steel bar utilizes the increasing of the surface-area of hole, the line of rabbet joint and interlayer seam when assembling with cathode block, improve the conductive area of bonding interface between the iron carbon, reaches the purpose that reduces between its iron carbon in conjunction with resistance.
Embodiment 2: as shown in Figure 3, Figure 4, the last plane of cathode steel bar is a ladder configuration.At the medial end of cathode steel bar, form with four layers of block plate (1) and three backing plates (2) welding composite construction, and going out electric connecting terminal, then use three fold block steel plate (1) and two backing plates (2) composite construction to form.
Cathode steel bar is when assembling with cathode block, at the top of current output terminal pocket, fill levelling with bonding thickener (6), so just can utilize the cathode steel bar two ends, the difference of the conductivity of metal and two kinds of materials of carbon element, and the difference of iron carbon bonded area, adjust the different interval horizontal resistance values of cathode steel bar group
Embodiment 3: as Fig. 5, shown in Figure 6, a kind of cathode steel bar with the steel plate composite construction, be assembled into by two block plates (1) the branch left and right sides, be provided with in the middle of two block plates (1) and be welded with backing plate (2), the thickness of its backing plate (2) can be used for adjusting the stand out at cathode steel bar two ends, and the width of interlayer seam (5)
Cathode steel bar is when making assembling with cathode block firm by ramming with bonding thickener (6), under the condition that the cathode steel bar well width is determined, can utilize the difference between cathode steel bar width and bonding thickener (6) thickness to change, adjust the cathode block variation of resistance value along its length
Embodiment 4: as Fig. 7, shown in Figure 8, cathode steel bar is by two block plates (1), and the branch left and right sides is assembled into a cathode steel bar, and along its length, it is narrow to be formed on current output terminal, and at the inner current enter broad of carbon piece, the middle part has curve transition.
Cathode steel bar is being made when assembling firm by ramming with cathode block, in the wide crevice place between two upright steel plate current enters, fills with conduction bonding thickener (6), with increase iron carbon contact area; Rod iron outer side and cathode block steel bar trough side wall surface iron carbon junction, adopt the bonding thickener (6) of different conductivities, connection is filled at the interface of carrying out between the iron carbon, as then connecting with the higher bonding thickener of resistivity by current output terminal, in the narrow slit place of the inboard current enter of carbon piece, the connection that the bonding thickener (6) of available low-resistivity carries out.Like this, the difference that just can utilize conducting paste (6) the resistance of medium value that bonds between cathode steel bar width and the iron carbon interface to change is adjusted the cathode block variation of resistance value along its length.
Embodiment 5: as Fig. 9, shown in Figure 10, a kind of cathode steel bar with the steel plate composite construction, the current output terminal of cathode steel bar is a rod iron, and at the current enter at the middle part of cathode block, then adopt bifurcated to become the form of two negative electrode steel plate rods, along its length, form one little at the current output terminal section, surface-area is less; Section is big after becoming two rod irons behind the current enter bifurcated, surface-area is bigger, the cathode steel bar of middle part band curve transition.
Cathode steel bar when assembling with cathode block, the difference of conduction bonding thickener (6) resistance change between the available iron carbon bonding interface, the difference that cathode steel bar section and iron carbon contact surface change is adjusted the cathode block variation of resistance value along its length.
Embodiment 6: as Figure 11, shown in Figure 12, a kind of cathode steel bar with the steel plate composite construction, the current output terminal of cathode steel bar is a rod iron, and, then adopt bifurcated to become the form of three negative electrode steel plate bar constructions, along its length direction in current enter position, the middle part of cathode block, form current output terminal rod iron section, surface-area is less, behind the inner current enter bifurcated of carbon piece, three rod iron sections, surface-area are bigger, and promptly iron carbon access node closes the bigger cathode steel bar of area.The bifurcated cathode steel bar is when assembling with the cathode block steel bar trough, can utilize the difference that conduction bonding thickener (6) resistivity of media changes between cathode steel bar width and the iron carbon interface, and the difference that changes of cathode steel bar section, iron carbon contact area, adjust the variation of resistance value along its length of carbon piece rod iron group upper surface.
Embodiment 7: as Figure 13, shown in Figure 14, a kind of cathode steel bar with the steel plate composite construction, under the condition that the cathode steel bar height equates, form with three block plates (1) welding assembly, the width that forms current output terminal is less, and promptly surface-area is less, and then width is bigger at current enter, the surface-area that is iron carbon bonding interface is bigger, and horizontal projection along its length is a bifurcated trapezoid structure.
When assembling with cathode block, cause in the laminated sandwich seam (5) between the three furcation area steel plates of carbon piece middle part and be full of conducting paste (3), make iron carbonaceous conductive bonding interface area increase, and higher thickener (3) layer of relative resistance rate along its length, also progressively thickeied to current output terminal by current enter.Utilize conducting medium between cathode steel bar and the cathode block rod iron cell wall promptly to conduct electricity the resistance change difference that bonding thickener (6) produces because of thickness, and the difference of the variation of bonded area between the iron carbon, adjust the horizontal resistance value of cathode block rod iron group, reach the purpose of eliminating or reducing horizontal current.
Claims (10)
1. cathode steel bar with the steel plate composite construction, be mainly used in the structure of the cloudy carbon piece of aluminium cell rod iron group, it is characterized in that: cathode steel bar is to adopt steel plate layering composite construction to form, cause cathode steel bar to be arranged on the expansion girth in the corresponding conducting metal of cathode block bottom centre position current enter cross section, greater than the expansion girth in cathode steel bar current outlet end conducting metal cross section, promptly cathode steel bar advances the metallic conduction member that the basal area of the iron carbon contact interface of electric section is progressively reduced to current output terminal by current enter.
2. according to the described a kind of cathode steel bar of claim 1 with the steel plate composite construction, it is characterized in that, adopt the processing of polylith steel plate to be configured to, available adjustment cathode steel bar and cathode block steel bar trough sidewall iron carbon contact interface area size, and the structure section structure form changes, adjust the different interval resistance value of cathode block rod iron group length direction, in order to eliminate or to weaken the metallic conduction parts of horizontal current of aluminum cell, it is after making up with cathode block, can reach elimination or weaken horizontal current of aluminum cell, strengthen the purpose of vertical current.
3. according to the described a kind of cathode steel bar of claim 1 with the steel plate composite construction, it is characterized in that: be arranged on same the cathode steel bar in the steel bar trough of cathode block bottom, form with the steel plate composite construction more than two, layered structure about on high direction being, or be the left-right symmetry structure in the horizontal direction.
4. according to the described a kind of cathode steel bar of claim 1, it is characterized in that with the steel plate composite construction; Be shaped on hole or groove on the steel plate of cathode steel bar.
5. according to the described a kind of cathode steel bar of claim 1, it is characterized in that with the steel plate composite construction; The upper surface of cathode steel bar is the staged horizontal tectonics.
6. according to the described a kind of cathode steel bar of claim 1, it is characterized in that with the steel plate composite construction;
The surface-area of cathode steel bar, promptly iron carbon bonded area by cathode block middle part correspondence position, progressively reduces to the conduction output terminal end of cathode steel bar.
7. according to the described a kind of cathode steel bar with the steel plate composite construction of claim 1, its adjustment is; Cathode steel bar is begun by the correspondence position at cathode block middle part, and the horizontal projection to extend along its length the conduction output terminal end of cathode steel bar is the trapezoidal configuration of inner wide and outer narrow.
8. according to the described a kind of cathode steel bar of claim 1, it is characterized in that with the steel plate composite construction; Be provided with between the two block plate interlayers seam of structure cathode steel bar and support backing plate or stopping composition.
9. according to the described a kind of cathode steel bar of claim 1, it is characterized in that with the steel plate composite construction; A cathode steel bar by the current output terminal of cathode steel bar, current enter in the cathode block bottom, but bifurcated configurations becomes the cathode steel bar structure more than two, promptly in the steel bar trough of the bottom of cathode block, current enter is got several the cathode steel bars that separate, and confluxing is configured to a cathode steel bar and conducts electricity output.
10. according to the described a kind of cathode steel bar of claim 1 with the steel plate composite construction, it is characterized in that: cathode steel bar adopts steel plate layering composite construction, setting is installed in same the cathode steel bar in the cathode block bottom steel bar trough that communicates, along its length direction, with steel plate with the section form of cathode steel bar and the structure formation tectonic association that makes a variation, so that adjust cathode steel bar contacts bonding interface area and iron carbon interface join-together structure with the iron carbon between the cathode block steel bar trough sidewall form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101419305A CN102199781A (en) | 2011-05-30 | 2011-05-30 | Cathode steel rod constructed by steel plate combination |
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| CN2011101419305A CN102199781A (en) | 2011-05-30 | 2011-05-30 | Cathode steel rod constructed by steel plate combination |
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| CN102199781A true CN102199781A (en) | 2011-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141154A (en) * | 2013-07-18 | 2014-11-12 | 成都精容电子有限公司 | Device for aluminum electrolysis |
| CN104962952A (en) * | 2015-06-18 | 2015-10-07 | 包头市中硕焊接科技有限公司 | Cathodic flat bar for electrolytic aluminum |
| CN109778233A (en) * | 2019-03-28 | 2019-05-21 | 中南大学 | A kind of aluminium electrolysis cathode rod iron, preparation method and aluminium cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124476A (en) * | 1976-06-16 | 1978-11-07 | Egon Rapolthy | Electrolytic cell for the production of aluminium |
| CN200992581Y (en) * | 2006-12-29 | 2007-12-19 | 中国铝业股份有限公司 | Special-shape cathode steel bar for aluminium electrolytic tank |
| CN101440505A (en) * | 2008-12-11 | 2009-05-27 | 中国铝业股份有限公司 | Cathode carbon block and cathode structure of impervious barrier conductive steel rod |
| CN201265046Y (en) * | 2008-10-13 | 2009-07-01 | 高德金 | Novel cathode carbon block steel bar set |
-
2011
- 2011-05-30 CN CN2011101419305A patent/CN102199781A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124476A (en) * | 1976-06-16 | 1978-11-07 | Egon Rapolthy | Electrolytic cell for the production of aluminium |
| CN200992581Y (en) * | 2006-12-29 | 2007-12-19 | 中国铝业股份有限公司 | Special-shape cathode steel bar for aluminium electrolytic tank |
| CN201265046Y (en) * | 2008-10-13 | 2009-07-01 | 高德金 | Novel cathode carbon block steel bar set |
| CN101440505A (en) * | 2008-12-11 | 2009-05-27 | 中国铝业股份有限公司 | Cathode carbon block and cathode structure of impervious barrier conductive steel rod |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141154A (en) * | 2013-07-18 | 2014-11-12 | 成都精容电子有限公司 | Device for aluminum electrolysis |
| CN104962952A (en) * | 2015-06-18 | 2015-10-07 | 包头市中硕焊接科技有限公司 | Cathodic flat bar for electrolytic aluminum |
| CN109778233A (en) * | 2019-03-28 | 2019-05-21 | 中南大学 | A kind of aluminium electrolysis cathode rod iron, preparation method and aluminium cell |
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Application publication date: 20110928 |