CN101748436B - Prebaked anode aluminum electrolytic bath - Google Patents
Prebaked anode aluminum electrolytic bath Download PDFInfo
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- CN101748436B CN101748436B CN2008102290978A CN200810229097A CN101748436B CN 101748436 B CN101748436 B CN 101748436B CN 2008102290978 A CN2008102290978 A CN 2008102290978A CN 200810229097 A CN200810229097 A CN 200810229097A CN 101748436 B CN101748436 B CN 101748436B
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Abstract
The invention discloses equipment adopting a Hall-Heroult fused salt electrolysis process to produce aluminum-an aluminum electrolytic bath, in particular to an above 400kA degree of prebaked anode aluminum electrolytic bath. The prebaked anode aluminum electrolytic bath comprises an upper structure, a cathode structure and a cathode bus bar, the upper structure comprises a crossbeam, a door-typecolumn, an anode carbon block group, a large anode bus bar, an anode lifting mechanism, and a shell breaking blanking system and a closed smoke exhaust system, and the cathode structure comprises a bath shell and a lining, wherein the anode lifting mechanism adopts a ball screw and set square structure; the closed smoke exhaust system is a closed smoke exhaust system of lower flue section; a cathode carbon block is in a structure of graphite carbon block with width cathode; the bath shell is in a welded cradle bath shell structure; and the cathode bus bar is an unsymmetrical cathode bus bar. The prebaked anode aluminum electrolytic bath improves the synchronization and the heat dissipation of the lifting mechanism, reduces the frictional head losses and enhances the uniformity of smoke exhaust, and the anode current density of the electrolytic bath is improved.
Description
Technical field
The present invention relates to a kind of equipment-aluminium cell that adopts Hall-Ai Lu aluminum production by fused-salt electrolysis, relate in particular to the above prebaked cell for aluminum-reduction of a kind of 400kA level.
Background technology
From U.S. Hall in 1886 and French since Heroult invention sodium aluminum fluoride-the alumina melt electrolytic process is produced aluminium, up to the present the aluminium industrial production, continues to use this method always in the world.The key equipment that electrolytic process is produced aluminium is an electrolyzer, electrolyzer is from being born till now, successively experienced small pre-calcining anode electrolytic tank, sidepiece conduction soderberg cell (HSS), upper guide be electrically connected continuous cell with self baking anode (VSS), limit portion processing large vol prebaked-anode type cell (SWPB), mid-line blanking prebaked-anode type cell (CWPB) and present middle point feeding prebaked-anode type cell (PFPB).
Along with developing rapidly of aluminium electrolytic industry, the exploitation of large vol prebaked cell for aluminum-reduction has obtained a series of achievements, and the large vol prebaked cell for aluminum-reduction has become the main body grooved of aluminium electrolytic industry.Present prebaked cell for aluminum-reduction mainly is made up of superstructure and cathode construction.Superstructure mainly comprises: anode block group, positive bar, crossbeam and door type column, anode hoister structure, crust breaking blanking device, the airtight exhaust system of groove and crust breaker etc.Cathode construction mainly is made up of pot shell, liner and negative busbar.
Existing prebaked cell for aluminum-reduction mainly has the following disadvantages:
(1) anodic current density of electrolyzer is on the low side: the anodic current density of existing electrolyzer is generally all at 0.8A/cm
2Below.
(2) electrolyzer pot shell heat-sinking capability is not good enough, cathode voltage is too high: between the pot shell and bassinet stand of existing electrolyzer, the employing that has is welded to connect, and the employing contact that has connects, and most of pot shell does not weld radiator element, even welded radiator element, be not optimized design, so the heat-sinking capability of cathode groove shell is not good enough, for the electrolyzer of high anode density yet, be unfavorable for the formation of sideways furnace wall, influence cell life.
(3) there is certain defective in the airtight fume exhaust system of electrolyzer, and it is inhomogeneous to smoke: the gas collection structure design segmentation of electrolyzer is unreasonable, and bleeding of the interior each several part of electrolyzer is inhomogeneous, and the slit is excessive between the cover plate, makes the gas collecting efficiency of total system not high.
(4) the end heat-sinking capability deficiency of electrolyzer, shell temperature is too high: the end construction of existing electrolyzer adopts the coaming plate stiffened panel structure, and whole end looks and looks like a honeycomb, this structure is unfavorable for heat radiation very much, make that shell temperature herein is too high, cause the pot shell distortion, influence cell life.
Summary of the invention
The invention provides provides a kind of prebaked cell for aluminum-reduction, purpose to be for the synchronism that improves lifting mechanism, thermal diffusivity, minimizing linear loss, to strengthen the homogeneity of discharging fume, the anodic current density that improves electrolyzer exactly in order to solve the problems of the technologies described above.
In order to achieve the above object, the present invention is achieved in that a kind of prebaked cell for aluminum-reduction, it comprises superstructure, cathode construction and negative busbar three parts, and superstructure comprises crossbeam and door type column, anode carbon block group, anode large bus bar, anode hoister structure, crust breaking blanking system, airtight fume exhaust system; Cathode construction comprises pot shell and liner; Wherein the anode hoister structure adopts ball-screw to add the set square structure; Airtight fume exhaust system is the airtight fume exhaust system of lower flue segmentation; Cathode carbon pieces is the wide cathode carbon block structure of greying; Pot shell is a welded type cradle pot shell structure, and negative busbar is asymmetric negative busbar.
Described crossbeam is pulled beam by two abdomens and is constituted the primary load bearing framework, and abdomen is pulled the two ends of beam and supported by the 2-6 root post.
Crust breaking blanking system between the described crossbeam, the crust breaking blanking system has 5～8 alumina reservoirs and 1～2 fluoride salt bin, and is furnished with corresponding crust breaking cutting agency, the constant volume and unloading device of 0.9～1.8kg is housed in the hopper, blanking point is positioned at longitudinal center's line position of electrolyzer, along vertical uniform distribution of electrolyzer.
Described hopper and crossbeam are made of one, and directly utilize the side of the web of crossbeam as hopper.
Described door type column is seated in two terminations of electrolyzer.
Described anode block group adopts double anode, and double anode group number is 24～48 groups, and anode carbon block group is by anode carbon block, and steel pawl, anode rod and blast welding block are formed, and the anode steel jaw number of each anode carbon block is 3～4.
Described anode block group adopts single anode, and single anode group number is 48～96 groups, and anode carbon block group is by anode carbon block, and steel pawl, anode rod and blast welding block are formed, and the anode steel jaw number of each anode carbon block is 3～4.
Described anode carbon block is of a size of long 1500～2000mm, wide 660～700mm, high 550～650mm.
Totally 4 of described anode large bus bars are distributed in the both sides of crossbeam, and two of every sides connect by soft band bundle, and the anode large bus bar of crossbeam both sides connects by the balance bus.
It is 8 suspension centres of full groove that described ball-screw adds the set square structure, 4 suspension centres of every side, and every anode large bus bar has 2 suspension centres, adopts a cover drive unit, and drive unit and step-down gear are installed in more than the big back of the end edge of electrolyzer.
The smoke discharging pipe of described airtight fume exhaust system is arranged under the horizontal cover plate and in the crossbeam, smoke discharging pipe vertically is divided into 1～8 independently flue tube along electrolyzer, and each flue tube is responsible for the flue gas in a zone and is collected.
Described smoke discharging pipe is the airtight smoke discharging pipe of sectional type.
Described airtight fume exhaust system is by big arc cover plate of sidepiece, and end cover plate, facet rotary shaft door type cover plate and horizontal cover plate constitute.
Described pot shell is a cradle-type ship shape pot shell, and it is by the rectangle pot shell made from steel sheet and the bassinet stand that longitudinally distributes constitutes.
Adopt between described bassinet stand and the rectangle pot shell to be welded to connect, the side is provided with Steel Diaphragm, big face welding radiator element, and facet adopts the cradle structure equally, punches on dividing plate.
Described bassinet stand, bassinet stand bottom girder are No. 40 joist steel, are connected with bottom land by welding, and the bassinet stand bottom girder is seated on two No. 25 joist steel, and two No. 25 joist steel are supported on the concrete buttress by insulation system.
Described liner is made up of wide graphitization cathode carbon block group and inner lining material.
Described cathode block group is made up of full graphitized cathode carbon block, and cathode carbon pieces is of a size of long 3000～4000mm, wide 660～700mm, and high 450～650mm, cathode carbon pieces is identical with the width of anode carbon block, and is corresponding one by one with anode.
Two grooves are arranged in the described cathode carbon pieces, and width is 90～160mm, between centers 200～300mm, and the degree of depth 120～210mm places width in the groove and is 65～130mm, highly is the cathode steel bar of 100～190mm.
Described cathode steel bar is connected with cathode carbon pieces by pricking the casting of the paste or the phosphorus pig iron.
The thermal insulation fire-resistant material is adopted in described liner bottom, upwards is followed successively by from the bottom of electrolyzer: one deck asbestos plate, ceramic plate or scar plate, one deck heat-insulating shield, two-layer insulating, one deck impervious material.
The sidepiece of described liner adopts silicon carbide to constitute in conjunction with silicon nitride lateral mass and composite side block, and the outside, cathode carbon pieces end cathode steel bar partly adopts the integral cast of antiseepage mould material to form, and adopts between lateral mass and the cathode carbon pieces to prick and sticks with paste tamping.
Described electrolyzer adopts big face 6～9 to advance.
Advantage of the present invention and effect are as follows:
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts set square to add ball-screw anode hoister structure, and an electric motor driving is placed in an end of electrolyzer crossbeam, and lift is positioned at more than the big top surface of the beam, and this kind lifting mechanism has good synchronism.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, adopt the airtight fume exhaust system of lower flue sectional type, the flue of electrolyzer is arranged under the horizontal cover plate and among the crossbeam, segmental structure, each section all has an independently smoke pipe, and the place converges at the total smoke pipe of the master of electrolyzer, so airtight fume exhaust system, reduce linear loss, strengthened the homogeneity of smoke evacuation.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts the arc sealing cover plate, and intensity is big, good airproof performance.The end seal closure changes fixed door type structure into by movable, has simplified the operation of opening the end cover plate on the one hand, has improved the stopping property of cover plate on the other hand.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts double anode group structure, two charcoal pieces of every group of anode, the slit that keeps 10～20mm on the same group between the anode, the slit that keeps 40mm between every group of anode, 6～8 steel pawls of every group of anode, 3～4 of each charcoal pieces.Outstanding characteristics of electrolyzer of the present invention are anodic current density height, greater than 0.82A/cm
2, the level that is in a leading position at home enters the international rank of advanced units.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts single anode group structure, keeps the slit of 40mm between charcoal piece of every group of anode, every group of anode, 3～4 steel pawls of every group of anode.Outstanding characteristics of electrolyzer of the present invention are anodic current density height, greater than 0.82A/cm
2, the level that is in a leading position at home enters the international rank of advanced units
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, adopt the wide cathode carbon block structure of greying, four cathode steel bars of casting in every group of graphitized cathode carbon block, two of every end casting, consider the characteristic of graphitized cathode carbon block erosion resistance difference and to the influence of bath life, improved the height of cathode carbon pieces, but because the high conductivity of graphitized cathode carbon block, the pressure drop of cathode carbon pieces part does not raise.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts welded type cradle pot shell structure, between big face bassinet stand and the pot shell, changed contact structure in the past, adopt the mode of directly welding to connect, improved the intensity of electrolyzer on the one hand, strengthened the heat-sinking capability of electrolytic bath shell simultaneously.Electrolyzer of the present invention has not singly adopted welded type cradle structure at the big face of electrolyzer, facet at electrolyzer has adopted the cradle-type structure equally, changed cellular end construction in the past, structure after the improvement had both satisfied the requirement of strength of electrolyzer, strengthened heat radiation again, on each layer of facet fence of electrolyzer, also open the hole, strengthened the flowability of air, strengthened the heat-sinking capability of electrolyzer equally.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention; cathode inner lining sidepiece except adopt silicon carbide in conjunction with the silicon nitride lateral mass; in order to satisfy the more heat radiation requirement of large vol electrolyzer; sidepiece has also adopted a kind of composite block (composite block of silicon carbide and charcoal piece); this composite block thermal conductivity is good, has strengthened the requirement of electrolyzer sidepiece heat radiation greatly, and sidepiece easily forms stove group; protection sidepiece composite block prolongs cell life.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention adopts asymmetric negative busbar design, and the influence of row electrolyzer to its magnetic field faced in compensation automatically, and negative busbar has adopted rational short circuit mouth design, handled easily simultaneously.
Description of drawings
Fig. 1 is the front view of prebaked cell for aluminum-reduction of the present invention.
Fig. 2 is the side-view of prebaked cell for aluminum-reduction of the present invention.
Fig. 3 is the bus figure of prebaked cell for aluminum-reduction of the present invention.
Among the figure, 1, crossbeam; 2, door type column; 3, anode carbon block group; 4, anode large bus bar; 5, anode hoister structure; 6, crust breaking blanking system; 7, airtight fume exhaust system; 8, pot shell; 9, liner; 10, negative busbar; 11, hopper; 12, anode carbon block, 13, the steel pawl; 14, anode rod; 15, capsule anchor clamps; 16, soft band bundle, 17, the balance bus, 18, the arc cover plate, 19, horizontal cover plate, 20, smoke discharging pipe, 21, the rectangle pot shell, 22, bassinet stand, 23, the bassinet stand bottom girder, 24, joist steel, 25, cathode carbon pieces, 26, cathode steel bar.
Embodiment
Below in conjunction with accompanying drawing, the above prebaked cell for aluminum-reduction structure of 400kA level of inventing is elaborated, but protection scope of the present invention is not limit by embodiment.
Aluminum cell structure of the present invention is applicable to the above prebaked cell for aluminum-reduction of 400kA level.Its structure is as follows: electrolyzer of the present invention mainly is made up of superstructure, cathode construction and negative busbar three parts.Superstructure mainly is made up of crossbeam 1 and door type column 2, anode carbon block group 3, anode large bus bar 4, anode hoister structure 5, crust breaking blanking system 6, airtight fume exhaust system 7; Cathode construction mainly is made up of welded type, heat radiating type cradle pot shell 8 and liner 9; Negative busbar 10 adopts asymmetric design.
The above prebaked cell for aluminum-reduction crossbeam 1 of 400kA level of the present invention is mainly pulled beam by two abdomens and is constituted the primary load bearing framework, and abdomen is pulled the two ends of beam and supported by four root posts, and door type column 2 is seated in two terminations of electrolyzer, and door type column 2 suitably improves, and is convenient to aluminium.Be provided with crust breaking blanking system 6 between the crossbeam 1, crust breaking blanking system 6 has 5～8 alumina reservoirs 11 and 1～2 fluoride salt bin, and be furnished with corresponding crust breaking cutting agency 6, and the constant volume and unloading device of 0.9～1.8kg is housed in the hopper 11, realize the accurate control of electrolyzer blanking amount.Blanking point is 6～8, is positioned at longitudinal center's line position of electrolyzer, along vertical uniform distribution of electrolyzer.Hopper 11 is made of one with crossbeam 1, directly utilizes the side of the web of crossbeam 1 as hopper 11, and such structure has not only increased the volume of hopper 11, and has improved the intensity of crossbeam 1.
Anode carbon block group 3 is the double anode form, double anode group number is 24～48 groups, anode carbon block group 3 is by anode carbon block 12, steel pawl 13, anode rod 14 and blast welding block are formed, two anodes fit together by the six roots of sensation or eight steel pawls 13 (every anode 3 or 4) and an anode rod 14, anode carbon block 12 is of a size of (1500～2000) X (660～700) X (550～650) mm, the diameter of anode steel jaw 13 is 170～220mm, anode carbon block 12 break joints are 10～20mm on the same group, and anode rod 14 is of a size of (180～230) X (200～250) mm.
Anode carbon block group 3 is for also adopting single anode, and single anode group number is 48～96 groups, and anode carbon block group 3 is by anode carbon block 12, and steel pawl 13, anode rod 14 and blast welding block are formed, and anode steel jaw (13) number of each anode carbon block (12) is 3～4.
Whole electrolyzer is installed 24 groups of anode carbon block group 3 altogether, be suspended on the anode large bus bar 4 by capsule anchor clamps 15 in two separate ranks, adjacent anode group 3 spacings 30～40mm, the centre joint of electrolyzer are 180～220mm (i.e. distance between the two row anode groups), and anodic current density is not less than 0.82A/cm
2Totally 4 of anode large bus bars 4 are distributed in the both sides of crossbeam 1, and two of every sides connect by soft band bundle 16, and the big bus 4 of crossbeam 1 both sides connects by balance bus 17, and anode large bus bar 4 is of a size of (400～600) X (160～220) mm.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, crust breaking blanking system 6 has 5～8 alumina reservoirs 11 and 1～2 fluoride salt bin and corresponding crust breaking cutting agency, hopper 11 is one with crossbeam 1 weldering, the web of crossbeam 1 is directly as the side plate of hopper 11, this structure had both increased the volume of hopper, had improved the intensity of crossbeam 1 again.The crust breaking blanking point is along electrolyzer longitudinal cenlerline uniform distribution, and between two anode groups 3, per four anode groups 3 are established a blanking point just, have guaranteed the homogeneity of alumina concentration the bath of cell from structure.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, anode hoister structure 5 adopts ball-screw to add the set square structure, complete 8 suspension centres of groove, 4 suspension centres of every side, every anode large bus bar 4 has 2 suspension centres, adopt a cover drive unit, drive unit and step-down gear are installed in more than the edge, an end crossbeam 1 top of electrolyzer.The advantage of this lifting mechanism is: synchronism is good, and reliable operation is simple in structure, be easy to install.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, airtight fume exhaust system 7 is by the arc cover plate 18 of big of sidepiece, the rotary shaft door type cover plate of end cover plate, facet and horizontal cover plate 19 constitute the closed structure of electrolyzer, in horizontal cover plate 19 times and crossbeam 1, be provided with the airtight smoke discharging pipe 20 of sectional type, smoke discharging pipe 20 vertically is divided into 1～8 independently flue tube along electrolyzer, and each flue tube is responsible for the flue gas in a zone and is collected.The negative pressure of every section flue need be consistent, and wind speed is reasonable, and the smoke evacuation of electrolyzer just can reach the ideal effect.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, cathode construction mainly is made of welded type cradle pot shell 8 and graphitization cathode structure.
The pot shell Final 8 degree and the rigidity of electrolyzer are directly connected to cell life, successful pot shell design needs pot shell that enough strength and stiffness are provided, to reduce its creep and tension set, while is along with the exploitation of large vol electrolyzer, requirement to pot shell, except satisfying the strength and stiffness requirement, also need to have good heat-sinking capability.Electrolyzer pot shell of the present invention is a cradle-type ship shape pot shell 8, it is by the rectangle pot shell made from steel sheet 21 and the bassinet stand 22 that longitudinally distributes constitutes, adopt between bassinet stand 22 and the rectangle pot shell 21 and be welded to connect, not only guaranteed intensity but also improved the heat-sinking capability of rectangle pot shell 21, lateral shroud fully phases out or the shroud width reduces, the substitute is Steel Diaphragm, be beneficial to the heat radiation and the power house ventilation of electrolyzer.The facet-structure of electrolyzer also adds the dividing plate form by the coaming plate in past and is improved to the cradle form, and punches on dividing plate, has improved the heat-sinking capability of end.Bassinet stand bottom girder 23 is No. 40 joist steel, is connected with bottom land by welding.Bassinet stand bottom girder 23 is seated on two No. 25 joist steel 24, and two No. 25 joist steel 24 are supported on the concrete buttress by insulation system.
Cell lining mainly is made up of wide graphitization cathode carbon block group and inner lining material, the cathode carbon pieces group is that full graphitized cathode carbon block 25 is formed, the characteristics of graphitized cathode carbon block are, high thermal conductivity, low-resistivity, good thermal-shock resistance and anti-sodium perviousness, and weak point is that erosion resistance is poor.At the characteristics of graphitization cathode, increased the height of cathode carbon pieces 25 and grown 3000～4000mm to being of a size of, wide 660～700mm, high 450～650mm, identical with the width of anode carbon block 12, corresponding one by one with anode, reduced the generation of horizontal current.Two grooves are arranged in the cathode carbon pieces 25, and width is 90～160mm, between centers 200～300mm, and the degree of depth 120～210mm places width in the groove and is 65～130mm, highly is the cathode steel bar 26 of 100～190mm.Cathode steel bar 26 is connected with cathode carbon pieces 25 by pricking the casting of the paste or the phosphorus pig iron.
The thermal insulation fire-resistant material is adopted in the bottom of electrolyzer, make the liner of electrolyzer obtain the distribution of rational temperature line, upwards be followed successively by from the bottom of electrolyzer: the asbestos plate that one deck 10mm is thick, the heat-insulating shield that one deck 60mm is thick (calcium silicate board), two-layer insulating fire brick, every layer of 65mm, the anti-bleed of the dry type that one deck 180mm is thick.The outside, cathode carbon pieces 25 ends cathode steel bar 26 parts adopt the integral cast of antiseepage mould material to form, insulating fire brick is placed in the appropriate location in the antiseepage mould material, establishes the thick asbestos plate of one deck 10mm near cell wall, builds the thick insulating fire brick of one deck 65mm again, suitably insulation reduces thermosteresis.
The lateral lining of electrolyzer is made of in conjunction with silicon nitride lateral mass and bight composite side block silicon carbide, the composite side block material of hornblock be common charcoal piece or silicon carbide in conjunction with silicon nitride, the thickness of lateral mass is 75～100mm, adopts between lateral mass and the cathode carbon pieces to prick and sticks with paste tamping.The outside, cathode carbon pieces 25 ends cathode steel bar 26 parts adopt the integral cast of antiseepage mould material to form, insulating fire brick is placed in the appropriate location in the antiseepage mould material, establish one deck asbestos plate or ceramic plate near cell wall, build the thick insulating fire brick of one deck 60-70mm again, adopt between lateral mass and the cathode carbon pieces to prick and stick with paste tamping.
The above prebaked cell for aluminum-reduction of 400kA level of the present invention, negative busbar 10 adopts asymmetric design, and the influence of row to its magnetic field faced in compensation automatically.
Electrolyzer of the present invention adopts big face 6～9 to advance.
Claims (24)
1. prebaked cell for aluminum-reduction, it comprises superstructure, cathode construction and negative busbar (10) three parts, and superstructure comprises crossbeam (1) and door type column (2), anode carbon block group (3), anode large bus bar (4), anode hoister structure (5), crust breaking blanking system (6), airtight fume exhaust system (7); Cathode construction comprises pot shell (8) and liner (9); It is characterized in that anode hoister structure (5) adopts ball-screw to add the set square structure; Airtight fume exhaust system (7) is the airtight fume exhaust system of lower flue segmentation; Cathode carbon pieces (25) is the wide cathode carbon block structure of greying; Pot shell (8) is welded type cradle pot shell (a 8) structure.
2. prebaked cell for aluminum-reduction according to claim 1 is characterized in that described crossbeam (1) constitutes the primary load bearing framework by two web beams, and the two ends of web beam are supported by the 2-6 root post.
3. prebaked cell for aluminum-reduction according to claim 1 and 2, it is characterized in that being provided with between the described crossbeam (1) crust breaking blanking system (6), crust breaking blanking system (6) has 5～8 alumina reservoirs and 1～2 fluoride salt bin, and is furnished with corresponding crust breaking cutting agency, the constant volume and unloading device of 0.9～1.8kg is housed in alumina reservoir and the fluoride salt bin, blanking point is positioned at longitudinal center's line position of electrolyzer, along vertical uniform distribution of electrolyzer.
4. prebaked cell for aluminum-reduction according to claim 3 is characterized in that described alumina reservoir and fluoride salt bin and crossbeam (1) are made of one, and directly utilizes the side of the web of crossbeam (1) as alumina reservoir and fluoride salt bin.
5. prebaked cell for aluminum-reduction according to claim 1 is characterized in that described door type column (2) is seated in two terminations of electrolyzer.
6. prebaked cell for aluminum-reduction according to claim 1, it is characterized in that described anode carbon block group (3) adopts double anode, double anode group number is 24～48 groups, anode carbon block group (3) is by anode carbon block (12), steel pawl (13), anode rod (14) and blast welding block are formed, and anode steel jaw (13) number of each anode carbon block (12) is 3～4.
7. prebaked cell for aluminum-reduction according to claim 1, it is characterized in that described anode carbon block group (3) adopts single anode, single anode group number is 48～96 groups, anode carbon block group (3) is by anode carbon block (12), steel pawl (13), anode rod (14) and blast welding block are formed, and anode steel jaw (13) number of each anode carbon block (12) is 3～4.
8. according to claim 6 or 7 described prebakeds cell for aluminum-reduction, it is characterized in that described anode carbon block (12) is of a size of long 1500～2000mm, wide 660～700mm, high 550～650mm.
9. prebaked cell for aluminum-reduction according to claim 1, it is characterized in that totally 4 of described anode large bus bars (4), be distributed in the both sides of crossbeam (1), two of every sides are passed through soft band bundle (16) and are connected, and the anode large bus bar (4) of crossbeam (1) both sides connects by balance bus (17).
10. prebaked cell for aluminum-reduction according to claim 1, it is characterized in that it is 8 suspension centres of full groove that described ball-screw adds the set square structure, 4 suspension centres of every side, every anode large bus bar (4) has 2 suspension centres, adopt a cover drive unit, drive unit and step-down gear are installed in more than the edge, an end crossbeam (1) top of electrolyzer.
11. prebaked cell for aluminum-reduction according to claim 1, the smoke discharging pipe (20) that it is characterized in that described airtight fume exhaust system (7) is arranged under the horizontal cover plate (19) and in the crossbeam (1), smoke discharging pipe (20) vertically is divided into 1～8 independently flue tube along electrolyzer, and each flue tube is responsible for the flue gas in a zone and is collected.
12. prebaked cell for aluminum-reduction according to claim 11 is characterized in that described smoke discharging pipe (20) is the airtight smoke discharging pipe of sectional type.
13. according to claim 1 or 11 described prebakeds cell for aluminum-reduction, it is characterized in that described airtight fume exhaust system (7) by big arc cover plate of sidepiece (18), end cover plate, facet rotary shaft door type cover plate and horizontal cover plate (19) constitute.
14. prebaked cell for aluminum-reduction according to claim 1 is characterized in that described pot shell (8) is a cradle-type ship shape pot shell, it is by the rectangle pot shell made from steel sheet (21) and the bassinet stand (22) that longitudinally distributes constitutes.
15. prebaked cell for aluminum-reduction according to claim 14, it is characterized in that adopting between described bassinet stand (22) and the rectangle pot shell (21) being welded to connect, the side is provided with Steel Diaphragm, big face welding radiator element, facet adopts the cradle structure equally, punches on dividing plate.
16. prebaked cell for aluminum-reduction according to claim 14, the bassinet stand bottom girder (23) that it is characterized in that described bassinet stand (22) and bassinet stand (22) bottom is No. 40 joist steel, be connected with bottom land by welding, bassinet stand bottom girder (23) is seated on two No. 25 joist steel (24), and two No. 25 joist steel (24) are supported on the concrete buttress by insulation system.
17. prebaked cell for aluminum-reduction according to claim 1 is characterized in that described liner (9) is made up of wide graphitized cathode carbon block group and inner lining material.
18. prebaked cell for aluminum-reduction according to claim 17, it is characterized in that described cathode carbon pieces group is made up of full graphitized cathode carbon block (25), cathode carbon pieces (25) is of a size of long 3000～4000mm, wide 660～700mm, high 450～650mm, cathode carbon pieces (25) is identical with the width of anode carbon block (12), and is corresponding one by one with anode.
19. prebaked cell for aluminum-reduction according to claim 18, it is characterized in that two grooves are arranged in the described cathode carbon pieces (25), width is 90～160mm, between centers 200～300mm, the degree of depth 120～210mm places width in the groove and is 65～130mm, highly is the cathode steel bar (26) of 100～190mm.
20. prebaked cell for aluminum-reduction according to claim 19 is characterized in that described cathode steel bar (26) is connected with cathode carbon pieces (25) by pricking the casting of the paste or the phosphorus pig iron.
21. prebaked cell for aluminum-reduction according to claim 1, it is characterized in that described liner (9) bottom adopts the thermal insulation fire-resistant material, upwards be followed successively by from the bottom of electrolyzer: one deck asbestos plate, ceramic plate or scar plate, one deck heat-insulating shield, two-layer insulating, one deck impervious material.
22. prebaked cell for aluminum-reduction according to claim 1, the sidepiece that it is characterized in that described liner (9) adopts silicon carbide to constitute in conjunction with silicon nitride lateral mass and composite side block, cathode carbon pieces (25) end outside cathode steel bar (26) part adopts the integral cast of antiseepage mould material to form, and adopts between lateral mass and the cathode carbon pieces to prick and sticks with paste tamping.
23. prebaked cell for aluminum-reduction according to claim 1 is characterized in that electrolyzer adopts big face 6～9 to advance.
24. prebaked cell for aluminum-reduction according to claim 1 is characterized in that negative busbar (10) is asymmetric negative busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290978A CN101748436B (en) | 2008-11-27 | 2008-11-27 | Prebaked anode aluminum electrolytic bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290978A CN101748436B (en) | 2008-11-27 | 2008-11-27 | Prebaked anode aluminum electrolytic bath |
Publications (2)
| Publication Number | Publication Date |
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| CN101748436A CN101748436A (en) | 2010-06-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102465321B (en) * | 2010-11-10 | 2016-08-03 | 高德金 | Aluminum electrolytic tank cathode conducting apparatus |
| CN102230188B (en) * | 2011-06-29 | 2013-06-12 | 东北大学设计研究院（有限公司） | Base for column of aluminum electrolysis cell |
| CN102416461B (en) * | 2011-12-09 | 2014-06-18 | 云南铝业股份有限公司 | Process for casting phosphorus cast iron to carbon graphite cathode carbon blocks |
| CN103668330B (en) * | 2012-09-03 | 2016-06-22 | 沈阳铝镁设计研究院有限公司 | The connecting device of aluminum cell casing and portal upright post |
| CN103726073A (en) * | 2012-10-15 | 2014-04-16 | 沈阳铝镁设计研究院有限公司 | Anode carbon block group used for aluminium electrolysis cell |
| CN104195595A (en) * | 2012-12-18 | 2014-12-10 | 刘馨怿 | Wing-type "golden section" crust breaking and blanking device and method for multianode electrolytic bath electrolysis |
| CN103014766A (en) * | 2013-01-18 | 2013-04-03 | 戚宗华 | Large aluminum electrolytic bath structure |
| CN107400902B (en) * | 2016-05-18 | 2021-02-19 | 王晓宇 | Online jacking heightening method for upper structure of aluminum electrolytic cell |
| CN106400053A (en) * | 2016-06-22 | 2017-02-15 | 贵阳铝镁设计研究院有限公司 | Integrally-formed aluminum electrolytic cell based on cathode inner liner and integral forming method thereof |
| CN107099821B (en) * | 2017-06-23 | 2023-07-25 | 重庆科技学院 | Full sealing device for upper part of prebaked anode aluminum electrolytic cell |
| CN107513728A (en) * | 2017-09-09 | 2017-12-26 | 聊城信源集团有限公司 | A kind of electrolytic cell with anode covering and heat insulating device |
| CN107893240A (en) * | 2017-12-04 | 2018-04-10 | 北京西玛高科技术有限公司 | A kind of prebaked cell for aluminum-reduction |
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