CN202830185U - Aluminum electrolytic cell cathode conductive structure - Google Patents
Aluminum electrolytic cell cathode conductive structure Download PDFInfo
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- CN202830185U CN202830185U CN 201120398887 CN201120398887U CN202830185U CN 202830185 U CN202830185 U CN 202830185U CN 201120398887 CN201120398887 CN 201120398887 CN 201120398887 U CN201120398887 U CN 201120398887U CN 202830185 U CN202830185 U CN 202830185U
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Abstract
The utility model provides an aluminum electrolytic cell cathode conductive structure which is mainly applied to construction of aluminum electrolytic cell cathode molten pool conductive lining structures. The aluminum electrolytic cell cathode conductive structure is characterized in that a metallic conductor cathode steel bar is arranged at the end of a cathode carbon block, a carbon block supporting boss is arranged at the bottom of the cathode carbon block, and the bottom surface of the cathode carbon block is tilted upward or is of a reverse groove structure. Molten aluminum is arranged around the cathode carbon block in an electrolytic molten pool, and a molten aluminum through hole capable of improving conductive performance of the cathode carbon block and inhibiting generation of horizontal current is arranged on the cathode carbon block. Voltage drop at the bottom of an aluminum electrolytic cell and pole pitch voltage setting of the aluminum electrolytic cell are reduced greatly, reactive power consumption of aluminum electrolysis is reduced, and energy conservation and consumption reduction of electrolytic aluminum production are achieved.
Description
Technical field:
Cathode conductive structure for aluminum electrolysis cell, main application is built by laying bricks or stones with cathode molten pool for aluminum electrolytic cell electro-conductive liner structure.
Background technology:
Existing general cathode molten pool for aluminum electrolytic cell conductive structure is by a plurality of cathode block rod iron groups, with sticking with paste on the heat-preservation and anti-leakage layer of building by laying bricks or stones in the aluminium electrolysis cell housing between the carbon element seam.Major function is that conduction of current with negative electrode aluminium liquid is to the large bus of negative electrode.
Existing general cathode conductive structure for aluminum electrolysis cell mainly contains following shortcoming; The one, the conduction working face of the cathode conductive structure that is become by cathode block rod iron set constructor only is the upper surface of cathode block, negative electrode conduction density is higher, the 2nd, the conduction working face of utmost point electro-conductive liner is the plane, negative electrode aluminium liquid easily produces the fluctuation of magnetic rotation stream, thereby so that the setting of electrolysis pole span is increased, cause the volts lost of ionogen pole span to increase; The 3rd, the bulk temperature of cathode block is excessively low, causes to lead the reduction of negative electrode electrical efficiency.
In order to overcome the defects of now general aluminium cell, designer of the present invention has proposed " a kind of novel aluminum cell cathode inner lining structure " technical scheme design in 2008, and application for a patent for invention number is 200810167575.7.The feature of this technical scheme of patent application publication number CN101725858A. is to be provided with the cathode block support rim at the aluminium cell anti-leakage layer, set up on the cathode block support rim bottom of cathode block, be provided with the gap that aluminium liquid can circulate up and down between the adjacent cathode block sidepiece, be provided with aluminium liquid circulation groove between anti-leakage layer top and the cathode block bottom.Cause aluminium cell when producing, aluminium liquid can with negative electrode electrical conductor-cathode block ring Zhou Jiare, namely have the electro-conductive liner for cathode structure of aluminium liquid cathode block ring week.With the aluminum cell cathode inner lining that the technical scheme of this patent application is constructed, owing to can overcome the now above-mentioned shortcoming of general electro-conductive liner for cathode of aluminium-electrolytic cell, extensively admitted in design with in producing.
Summary of the invention:
Cathode conductive structure for aluminum electrolysis cell of the present invention, in conjunction with above-mentioned " a kind of novel aluminum cell cathode inner lining structure " (publication number CN101725858A) practice of innovation, in order to overcome the above-mentioned shortcoming of now general aluminium cell, a kind of innovation of proposition improved the technical scheme of implementing.
Opening one's minds of cathode conductive structure for aluminum electrolysis cell technical scheme of the present invention is: cathode conductive structure for aluminum electrolysis cell, it is the negative electrode conduction combiner of building by laying bricks or stones at aluminium cell electrolysis molten bath inner bottom part, in structure design, should give full play to the conductivity of aluminium liquid in the aluminium cell molten bath, the characteristics that are better than cathode block and cathode steel bar, in conjunction with the thermal field of aluminium cell and the optimization design in magnetic field, take the conduction conduction pattern that improves aluminium liquid and cathode block as core, to reduce cathode conductive structure for aluminum electrolysis cell-be that bottom land voltage is reduced to target, design a kind of novel cathode conductive structure for aluminum electrolysis cell.
The cathode conductive structure for aluminum electrolysis cell technical scheme is: installation constitution has cathode steel bar in the end carbon bowl of cathode block, the cathode block bottom surface sections is concave-convex type structure or oblique structure, connect layer for aluminium liquid between the bottom of cathode block and the negative electrode heat-preservation and anti-leakage layer upper surface, the circulation of aluminium liquid is arranged between the sidepiece slit of adjacent two cathode blocks, namely have aluminium liquid to surround in the part outer surface part ring week of cathode block in the electrolysis molten bath.
According to technique scheme, cathode conductive structure for aluminum electrolysis cell, the substructure of its cathode block have carbon piece support rim, build by laying bricks or stones in the sidepiece furnace wall of aluminium cell near the carbon piece support rim of current output terminal cathode block bottom.
According to technique scheme, the top of the cathode block of cathode conductive structure for aluminum electrolysis cell is level, cathode block bottom has from the inner of carbon piece current output terminal section support rim position, the gradient that constructs to the electrolyzer center position, or fall groove to what fovea superior rose.
According to technique scheme, the end structure of the current output terminal of the cathode block of cathode conductive structure for aluminum electrolysis cell has metallic conductor-cathode steel bar, cathode steel bar is inserted in the pre-opened hole carbon bowl of cathode block end, adopts the mode of the casting phosphorus pig iron to be fixedly connected with cathode block enforcement conduction.The effect of cathodic metal electrical conductor is: under the worst hot case state with the conduction of current of cathode block to cathode aluminium busbar.
According to technique scheme, arrange on the cathode block of cathode conductive structure for aluminum electrolysis cell and be configured with aluminium liquid conduction communicating pores or aluminium liquid electrical conduction current groove, its aluminium liquid conduction communicating pores can horizontal tectonics or vertical, cross conformation on cathode block.For the conductivity of giving full play to aluminium liquid because the characteristics of cathode block, be provided with aluminium liquid communicating pores or groove in cathode block inside, aluminium liquid in its hole not only can reduce the generation of aluminium liquid layer horizontal current, adjusts current density, also can improve the electric conductivity of cathode block.
According to technique scheme, cathode conductive structure for aluminum electrolysis cell is configured to aluminium liquid circulation layer between the bottom of cathode block and negative electrode heat-preservation and anti-leakage layer, and there is aluminium liquid in the ring week of cathode block.
According to technique scheme, cathode conductive structure for aluminum electrolysis cell, the top of heat-preservation and anti-leakage layer is the carbon element end liner.In order to prevent that aluminium liquid and ionogen in the electrolyzer molten bath from corroding the melting heat-preservation and anti-leakage layer, the upper surface layer that its heat-preservation and anti-leakage layer contacts with aluminium liquid adopts carbon materials to build by laying bricks or stones and forms.
According to technique scheme, cathode conductive structure for aluminum electrolysis cell, aluminium inlet place, electrolyzer molten bath is provided with out the aluminium pond.
Cathode conductive structure for aluminum electrolysis cell of the present invention, in the electrolysis molten bath, the effect of aluminium liquid is: the conductive cathode electric current, the protection cathode block is not caused erosion by electrolyte solution to its surface, maintenance heat balance, the electrical efficiency of raising cathode block; Because the aluminium liquid in the electrolyzer molten bath can with cathode block ring Zhou Jiare, can make cathode block resistivity descend; Because the conduction current surface-area that cathode block contacts with aluminium liquid strengthens, the current density on cathode block surface is reduced; Wash away sedimental effect because the magnetic rotation stream that the aluminium liquid of bottom, electrolyzer molten bath produces can play cleaning, therefore can reduce the bottom land precipitation.
Cathode conductive structure for aluminum electrolysis cell of the present invention, the effect of its cathode block is: the conduction of current of negative electrode aluminium liquid to cathode steel bar, is suppressed the fluctuation of aluminum liquid magnetic rotational flow, the generation that prevents from slowing down the aluminum liquid horizontal electric current.Because cathode block has the pressure effect to bottom aluminium liquid, and cathode block can reduce the level fluctuation between aluminium liquid and the electrolyte interface to the iris action of aluminum liquid magnetic rotational flow.
Adopt cathode conductive structure for aluminum electrolysis cell of the present invention, the aluminium cell that structure is built by laying bricks or stones, be characterized in: metallic conductor-cathode steel bar setting is configured in the end of cathode block, the recess configurations that the cathode block bottom is inclined upwardly or oriented fovea superior rises has aluminium liquid in the cathode block ring week of inside, electrolysis molten bath; Be configured with on the cathode block and can improve the cathode block conductivity, can suppress the aluminium liquid communicating pores of the generation of horizontal current, cause the bottom land volts lost of aluminium cell, and the ionogen pole span voltage of aluminium cell is established significantly reduction.Reach and reduce the idle power consumption of electrolysis of aluminum, realize the purpose that Aluminum Electrolysis Production is energy-saving and cost-reducing.
Description of drawings:
What the technical scheme of cathode conductive structure for aluminum electrolysis cell of the present invention and feature thereof were set forth in specific embodiment and Figure of description will be more cheer and bright.
Fig. 1 cathode conductive structure for aluminum electrolysis cell embodiment 1, the sectional drawing of cell construction
Fig. 2 is the orthographic plan of Fig. 1 cathode conductive structure for aluminum electrolysis cell cathode block.
Fig. 3 cathode conductive structure for aluminum electrolysis cell embodiment 2, the sectional drawing of cell construction.
Fig. 4 is the orthographic plan of Fig. 3 cathode conductive structure for aluminum electrolysis cell cathode block.
The sectional drawing of Fig. 5 cathode conductive structure for aluminum electrolysis cell aluminum cell structure.
Fig. 6 is the top plan view of Fig. 5.
Rise as falling the schematic isometric of negative electrode carbon of fluted body to fovea superior Fig. 7 carbon piece bottom surface.
Fig. 8 carbon piece bottom surface is to there being the end to tilt to the middle and upper part end, and supports the schematic isometric of convex platform negative electrode carbon with cathode block.
Shown in its figure: 1 cathode block, 2 negative electrode conducting metals, 3 aluminium liquid communicating poress, 4 anti-leakage layers, 5 electrolyzer Steel Sheels, 6 thermal insulation layers, 7 aluminium liquid, 8 ionogen, 9 carbon piece support rims, 10 sidepiece furnace walls, the 11 casting pig iron, 12 antiseeps are made material firm by ramming, 13 anode blocks, 14 go out the aluminium pond, 15 carbon element end liners, 16 top pressing boards.
Embodiment:
Cathode conductive structure for aluminum electrolysis cell of the present invention, constitutional features is: the end structure of cathode block has the cathodic metal conductive contact, the lower bottom part of cathode block, by the end to the electrolyzer center position, be inclined upwardly or rise to fovea superior, shown in (Fig. 1), cathode block is built by laying bricks or stones on the antiseep thermal insulation layer of the cathode molten pool bottom in the aluminium cell Steel Sheel, the top of cathode block is level, the cathode block bottom is played partly and can be formed between the antiseep thermal insulation layer bottom the cathode molten pool one to fovea superior and produces into aluminium liquid Aluminum storage circulation layer, and constructed at cathode block and can improve the cathode block conductivity, suppress the aluminium liquid communicating pores that horizontal current produces.
Negative electrode carbon is inserted in the aluminium cell molten bath from the aluminum cell side furnace wall, be configured to have in cathode block ring week the form of aluminium encirclement, namely be configured with between aluminium electrolysis cell cathode carbon block bottom and the cathode inner lining heat-preservation and anti-leakage layer produce into aluminium liquid circulation layer after, the bottom surface sections of its cathode block, can be to the aluminium liquid layer below it, the magnetic rotation stream fluctuation that produces because of magnetic field has repression, therefore can so that between cathode block upper surface and the ionogen pole span lower surface thinner aluminium liquid layer vertical fluctuation reduce, it is lower to cause the ionogen pole span to be set.Can utilize again simultaneously aluminum liquid magnetic rotational flow to impact and be dissolved in the throw out that bottom land forms.
The groove shapes that rises to fovea superior is arranged in the middle and lower part of cathode block (1), between the thermal insulation layer anti-leakage layer (2) of cathode block (1) bottom and cathode molten pool bottom, constructs logical layer of aluminium liquid stream (7).
Cathode block (1) two ends add the height of carbon piece brace table, its section is larger, be conducive at the end structure of cathode block (1) negative electrode conducting metal (2) is installed, be cathode steel bar (2), and be conducive to the closely knit structure of building by laying bricks or stones of cathode block (1) and sidepiece furnace wall (10) and bottom antiseep thermal insulation layer (4).Construct aluminium liquid communicating pores at the cathode block body, can adjust distribution of current, improve the negative electrode electrical efficiency.
Being arranged on cathode block (1) bottom makes material (12) or carbon element at the carbon piece support rim (9) of sidepiece furnace wall end firm by ramming with high-strength antiseep and makes thickener firm by ramming and be configured in sidepiece furnace wall (10) and bottom heat-preservation and anti-leakage layer (4).In order to prevent in the aluminium cell molten bath, suspending is inserted in the fracture of the cathode block (1) in the aluminium liquid (7), structure cathode block middle part support rim (9) between the bottom of cathode block (1) and heat-preservation and anti-leakage layer (4).Cathode block support rim (9), but building structure on heat-preservation and anti-leakage layer (4), also can (10 bottom directly structure be processed to form at cathode block.
For the electric conductivity that improves cathode block (1) and the horizontal current of eliminating negative electrode aluminium liquid (1) layer, be configured with aluminium liquid (7) communicating pores (8) at cathode block (1), its aluminium liquid communicating pores (3) can be in the upper horizontal tectonics of cathode block (1) or vertical, cross conformation.
As shown in Figure 6, cut into little side's carbon piece with anode block (13), structure build by laying bricks or stones the upper surface of thermal insulation layer (6), its slit is sturdy with carbon element ramming paste. form an aluminium electrolytic cell cathode aluminium liquid molten bath end liner carbon element anti-leakage layer (4).
The negative electrode conducting metal (2) of cathode conductive structure for aluminum electrolysis cell of the present invention is the conductive connecting element between the large aluminium busbar of cathode block and negative electrode, be configured in the termination of cathode block (1), negative electrode conducting metal (2) member can use the ferrous materials such as rod iron, square steel, steel pipe to make, and also can use other conducting metal such as copper coin, copper pipe to make.
Mode of connection between negative electrode conducting metal (2) and cathode block (1) end not only can adopt the mode of the casting pig iron to conduct electricity connections, also can adopt to be threaded, or the mode of making the filling carbon paste firm by ramming connects.
The cathode block of cathode conductive structure for aluminum electrolysis cell of the present invention (1), not only can adopt now general graphite cathode carbon block as the routine material components, but also can adopt carbon graphite electrode as cathode block, the cross-sectional shape of its cathode block (1) can be rectangle, can also be circular, trapezoidal, the cross section of length direction can equate, also can make a variation.
In order to prevent that cathode block (1) bottom and end from producing the Seepage of aluminium liquid (7) or electrolyte solution (8), building antiseep by laying bricks or stones when making material (12) firm by ramming, available tooling fixture or the subsidiary material of building by laying bricks or stones are fixing with cathode block (1), make firm by ramming after material (12) finishes wait building antiseep by laying bricks or stones, with its dismounting.
In order to guarantee the stopping property of cathode block (1) head bottom part face and anti-leakage layer (4) limit section upper surface, and the stopping property of building materials between carbon piece end and the electrolyzer sidepiece furnace wall (10), prevent oozing out of aluminium liquid (7) and ionogen (8), the top of electrolytic cell housing (5) should arrange sidepiece furnace wall (5) top pressing board (16).
Claims (9)
1. cathode conductive structure for aluminum electrolysis cell is characterized in that; Installation constitution has cathode steel bar in the end carbon bowl of cathode block, the cathode block bottom surface sections is concavo-convex platform trough type structure or oblique structure, connect layer for aluminium liquid between the bottom of cathode block and the heat-preservation and anti-leakage layer upper surface, the circulation of aluminium liquid is arranged between the sidepiece slit of adjacent two cathode blocks, namely have aluminium liquid to surround in the outer surface part ring week of cathode block in the electrolysis molten bath.
2. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; The top of the cathode block of aluminum cell cathode inner lining conductive structure is level, and the gradient from carbon piece side end to the electrolyzer center position is arranged at cathode block bottom, or falls groove to what fovea superior rose.
3. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; The end structure of the current output terminal of the cathode block of aluminum cell cathode inner lining conductive structure has metallic conductor-cathode steel bar, cathode steel bar is inserted in the pre-opened hole carbon bowl of cathode block end, adopts the mode of the casting phosphorus pig iron to be fixedly connected with cathode block enforcement conduction.
4. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; Be configured with the hole that connects aluminium liquid on the cathode block, but horizontal tectonics or vertical configuration on its hole cathode block.
5. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; Be configured to aluminium liquid circulation layer between the bottom of cathode block and negative electrode heat-preservation and anti-leakage layer, there is aluminium liquid in the ring week of cathode block.
6. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; The bottom of cathode block is configured with carbon piece support rim by the furnace wall side.
7. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; Be configured with carbon piece support rim between the bottom of its cathode block and the negative electrode heat-preservation and anti-leakage layer, to prevent the cathode block fracture.
8. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; The top of negative electrode heat-preservation and anti-leakage layer is the carbon element end liner, and the upper surface layer that its heat-preservation and anti-leakage layer contacts with aluminium liquid adopts carbon materials to build by laying bricks or stones and forms.
9. according to cathode conductive structure for aluminum electrolysis cell claimed in claim 1, it is characterized in that; Electrolyzer molten bath inner end is provided with out the aluminium pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120398887 CN202830185U (en) | 2011-10-08 | 2011-10-08 | Aluminum electrolytic cell cathode conductive structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120398887 CN202830185U (en) | 2011-10-08 | 2011-10-08 | Aluminum electrolytic cell cathode conductive structure |
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| CN202830185U true CN202830185U (en) | 2013-03-27 |
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| CN 201120398887 Expired - Fee Related CN202830185U (en) | 2011-10-08 | 2011-10-08 | Aluminum electrolytic cell cathode conductive structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400175A (en) * | 2011-10-08 | 2012-04-04 | 高伟 | Conducting structure of cathode of aluminum electrolytic cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400175A (en) * | 2011-10-08 | 2012-04-04 | 高伟 | Conducting structure of cathode of aluminum electrolytic cell |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20161008 |