CN102251257A - Aluminum cell with alumina setting feed opening - Google Patents
Aluminum cell with alumina setting feed opening Download PDFInfo
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- CN102251257A CN102251257A CN2011100090663A CN201110009066A CN102251257A CN 102251257 A CN102251257 A CN 102251257A CN 2011100090663 A CN2011100090663 A CN 2011100090663A CN 201110009066 A CN201110009066 A CN 201110009066A CN 102251257 A CN102251257 A CN 102251257A
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Abstract
The invention discloses an aluminum cell with an alumina setting feed opening. The aluminum cell is characterized in that: metal or refractory materials are made into a tubular object, and the tubular object is arranged in an electrolyte condensation crusting layer of the cell and fixed on an upper steel structure of the aluminum cell, and serves as a setting feed opening of an alumina feeding device part. The temperature of a blanking point is improved, the electrolyte condensation crusting speed is reduced, the time of melting alumina powder on an upper surface layer of an electrolyte solution is prolonged, and the alumina powder is accurately and continuously added into an electrolyte melt layer on the lower part of an electrolyte crusting layer in a set amount in a balance way, so that the aims of improving the alumina feeding quality, balancing the alumina concentration in the electrolyte, improving the current efficiency of the aluminum cell and reducing power consumption of producing electrolytic aluminum are fulfilled.
Description
Technical field: the aluminium cell that is provided with aluminum oxide typing feed opening is the Technology equipment of Aluminum Electrolysis Production, is mainly used in the production of electrolytic aluminum, and pre-calcining electrolytic cell structure Design, manufacturing and installation.
Technical background: aluminium cell is under working condition, and the temperature of ionogen liquation layer is about 950 ℃, and the back is along with the reduction of temperature about 915 ℃ for its top material, and the beginning condensation forms the electrolyte crust layer; About 160mm is main for the thickness of electrolyte crust layer, and it is the condensation crust layer of ionogen liquation layer, is again the thermal insulation layer of ionogen liquation layer, and the hardness of its crust layer increases along with the reduction of temperature.
In the electrolyzer production process, when carrying out alumina feeding at every turn and carrying out electrolysis overflowing exhaust, existing general crust breaking cylinder point feeding device, to use crust-breaking chips, on ionogen condensation crust layer, alumina blanking point place punctures a hole, forming an aluminum oxide powder, to flow into ionogen liquation layer porthole by the tremie pipe port be feed opening, and this feed opening is again the venting hole that overflows gas in the ionogen liquation simultaneously; After finishing a blanking program, because the upper surface of ionogen liquation layer is exposed in the relatively low space of the interior bulk temperature of electrolyzer, the very fast new ionogen condensation crust layer that forms an obstructive alumina powder adding again rapidly and overflow gaseous emission repeats circulation again by setup program when carrying out alumina feeding once more.
The reinforced material of aluminum oxide in aluminum electrolytic bath point type mechanism has two kinds, a kind of is now general in being arranged on the crust breaking cylinder of aluminium cell to anode block centre joint top, top, the drivening rod tup moves up and down, make tup puncture the above ionogen oxidation aluminium insulation mulch crust layer of the anode block centre joint, on the crust layer, form a hole, make the aluminum oxide powder of discharging in the constant-volume blanking device then, hole by the crust layer flow in the following ionogen liquation layer of crust layer, makes aluminum oxide carry out the crust breaking formula cutting agency device of decomposition reaction in ionogen.A kind of is to test application, in ionogen oxidation aluminium insulation mulch crust layer the pipe rod is set, and by the pore of managing in the rod pipeline that the aluminum oxide extruding is injected in the fused electrolyte is pushed pouring-in alumina feeding device.
Existing general aluminum oxide in aluminum electrolytic bath point feeding mechanism exists following technological deficiency or deficiency.
The crust-breaking chips of the crust breaking cylinder connecting rod lower end of 1 crust breaking formula cutting agency device, form in the process of blanking hole at impact grinding crust layer, crust-breaking chips and the frequent contact friction of electrolyte crust layer cause the serious wear of crust-breaking chips, behind the crust-breaking chips contact fused electrolyte liquid, ionogen is bigger to the electrochemical etching consumption of tup, causes shorten the work-ing life of crust-breaking chips.
2 because the changes shape of the length thickness of crust-breaking chips is uncertain, the peening hammer primary drying also irregularity very of shape size that hits formed feed opening aluminium hole then, cause this charging opening that passes through that aluminum oxide powder can not entirely accurate, add to uniformly in the fused electrolyte layer, thereby cause the content interval of the alumina concentration in the ionogen liquation layer bigger, influence the material balance of aluminium cell, cause the reduction of electrolytic cell currents efficient.
3, in aluminium cell, after crust-breaking chips is opened the blanking hole, aluminum oxide powder is in the ionogen liquation layer that is injected into through the tremie pipe port in the blanking hole time, will be through the negative pressure space of the opening in the electrolyzer, because aluminum oxide is pulverulent material, easily make and fly upward in the negative pressure space of alumina material in electrolyzer, aspirated out outside the electrolyzer by the smoke discharging dust removing system of aluminium cell, can not participate in electrolytic reaction, cause the power loss of mass transport and smoke discharging dust removing system to strengthen.
4, the production process of aluminium cell, it is a thermoelectrochemistry reaction process of carrying out continuously, the process of adding aluminum oxide in ionogen also should be an accurate successive process, the point type crust breaking of existing general aluminum oxide in aluminum electrolytic bath charging system device is the interval cutting mode of feeding device formation at interval, because self design itself does not just meet the aluminium cell work principle, point type interval feed way during employing, its principle of mechanism of keeping the ionogen chemical equilibrium is: allow the material balance in the ionogen be that the balance of alumina concentration maintains in the crest curve interval, with a material balance destroyed after, the mechanism that the balance that lags behind is again repaired, the process of enforcement alumina feeding operation.This just because the alumina feeding mode that the point type crust breaking interval feeding device mechanism of alumina feeding system is determined, and the material balance chemical relationship that is lagged behind in the ionogen liquation layer that mode determined thus, make the current efficiency of aluminium cell reduce, and cause the generation of the effect of grooves situation that has strengthened current loss and contaminate environment again.
5 pipelines push the blanking pipeline of pouring-in alumina feeding device, layer obstruction of the blanking pore that easily causes this device and the oxidization burning loss of carbon tube rod because the fused electrolyte layer crusts, cause the carbon tube rod to reduce and reinforced being obstructed work-ing life, influence it and apply.
Ionogen liquation layer directly contacts with the interior lower air of relative temperature of electrolyzer in the feed opening that 6 existing aluminium cell crust breakings form, condensing temperature changes greatly, form surperficial soft junction shell very easily fast, cause fused electrolyte solution layer fusion aluminum oxide time decreased, fusing speed slows down, and causes in the ionogen liquation alumina concentration discrete discrepancy bigger.
Summary of the invention: for the above-mentioned defective that overcomes crust breaking formula cutting agency device and the above-mentioned weak point of the pouring-in cutting agency device of pipeline, the invention provides a kind of novel aluminum oxide in aluminum electrolytic bath feeding device structural design scheme, promptly be provided with the aluminium cell technical scheme of aluminum oxide typing feed opening:
The characteristics of this technical scheme are; In aluminium cell on the electrolyte crust layer, the position of alumina blanking point, structure is set to be installed one and has insulation, the synthetical aluminum oxide typing feed opening of blanking and degassing function, its parts as the aluminum oxide in aluminum electrolytic bath feeding device, be called for short aluminum oxide powder type feed opening, installation constitution is in the blanking point position, to improve the temperature of blanking point, slowing down ionogen liquation laminar surface forms the speed of condensation and reduces its crust hardness, cause the alumina feeding device can be with aluminum oxide powder smoothly by the high temperature blanking zone in the synthetical aluminum oxide typing feed opening, input is added in the ionogen liquation layer of soft flexible electrolyte crust layer bottom in the aluminium cell, and the reinforced work of intact aluminum oxide powder prolongs the time of fused electrolyte dissolved oxygen aluminium powder; And make that decomposing the gas that overflows generation in the electrolysis liquation layer emits by this artificial typing feed opening.
According to technique scheme: with high temperature resistant potential resistance to electrolyte contamination erosive metallic substance or refractory materials, being configured to one can make the oxygen aluminium powder run through to flow in the ionogen liquation layer, and the gas release of overflowing discharging in the electrolyte solution can be come out, can realize the typing bulk that has through hole or the tubulose component of alumina feeding and degassing function, it is the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device, and it is considered as the reinforced parts of putting of aluminum oxide in aluminum electrolytic bath, link together with the guiding tremie pipe, installation constitution is in the middle of the electrolyte crust layer of aluminum oxide in aluminum electrolytic bath blanking point position, cause the alumina feeding device of aluminium cell, can the aluminum oxide powder conveying be added in the ionogen melting layer by this synthetical typing feed opening.
According to technique scheme: the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device, adopting heat-resisting, anti-oxidant, potential resistance to electrolyte contamination corrosive metallic substance or refractory materials is that the refractory brick material is made, and it is shaped as rectangular tubular, cylindrical tubular or the trapezoid block tubular articles that has hole.
According to technique scheme: the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device, the centre is provided with through hole, its through hole is that the vent that gas is overflowed in passage and electrolysis is added in the inflow of aluminum oxide powder, its through hole with overflow the gas exhaust duct and connect mutually.
According to technique scheme: installation constitution has metal connecting piece on the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device, so that after the feed opening of will finalizing the design is arranged in the aluminum cell electrolyte crust layer, be fixed on the upper metal structures of aluminium cell.
According to technique scheme: when the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device adopts the refractory brick material to make, installation constitution is provided with the metal clamping part that reinforces the connection on its typing feed opening, the reinforce the connection effect of part of its metal clamping is, the one, be used for clamping and reinforce the typing feed opening made from the refractory brick material, the 2nd, be convenient to refractory materials and fixedly connected with alumina feeding device and aluminium cell upper metal structures enforcement transition that the upper metal material is made.
According to technique scheme: be provided with in the duct, inside of the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device and be configured with the metal pipe box, the purpose that this metal sleeve is set is that the guide tremie pipe of being convenient to the aluminum oxide in aluminum electrolytic bath blanking device welds with the feed opening of finalizing the design and fixedlys connected.
According to technique scheme: be provided with through hole and venting hole passage in the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device, its through hole and vent connect.
According to technique scheme: when the lower end of the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device is installed on electrolyzer and is provided with, be configured in the electrolyte crust layer on aluminum cell electrolyte melting layer top, the upper surface of baseplane and fused electrolyte layer has the distance of certain altitude under its typing feed opening, prevents from that typing feed opening that the ionogen liquation is made metal or refractory brick material from causing to wash away erosion.
According to technique scheme: the typing feed opening of aluminum oxide in aluminum electrolytic bath feeding device install on the aluminium cell be provided with after, its through hole is the extruding tremie pipe of alumina feeding device or the positioning and guiding passage of extruding stick pusher, and can be by wherein.
On electrolytic tank electrolysis matter crust layer, setting install have insulation, the typing feed opening of the aluminum oxide in aluminum electrolytic bath feeding device of blanking and degassing function, because the temperature in the typing feed opening in the blanking point local space zone is higher, can make ionogen liquation layer upper surface, forming the incrustive speed of condensation slows down, or do not form the harder crust of condensation substantially, cause aluminum oxide powder to add in the ionogen liquation layer by smooth successive.Even in feed opening, form the soft junction shell between the high-temperature zone, or form aluminum oxide part Guinier-Preston zone, by the plunger tpe stick pusher (crust-breaking chips that is equivalent to now general crust breaking cylinder lower end) that is arranged on upper end, blanking aperture aluminum oxide powder is pushed again and be expressed in the ionogen liquation layer; At once form new typing blanking exhaust-duct again this moment in the typing feed opening.
In aluminum cell electrolyte condensation crust layer, the typing feed opening that is provided with as the alumina feeding device feature is installed, and it is fixed on the aluminium cell Steel Superstructure.Its objective is: the temperature that improves blanking point, slow down the incrustive speed of ionogen condensation, reduce incrustive hardness, prolong the time of electrolyte solution upper surface layer fusion aluminum oxide powder, make aluminum oxide powder by set amount, accurate, balanced, successive adds in the ionogen liquation layer of electrolyte crust layer bottom, improved the reinforced quality of alumina feeding to reach, the concentration of aluminum oxide in the balanced ionogen, the current efficiency of raising aluminium cell, the production power consumption purpose of reduction electrolytic aluminum.Because the installation of typing feed opening, also reduce or avoided crust-breaking chips (stick pusher) under the existing general crust breaking blanking device, because of contacting the loss that causes with hard electrolyte crust generation frictional property, and contact with the ionogen liquation and the generation of the corrode burning phenomenon that produces, prolonged the work-ing life of crust-breaking chips (be the plunger tpe stick pusher or push the extruding type tremie pipe).
Description of drawings
Technical solution of the present invention: aluminum electrolyzing cell used alumina feeding device typing feed opening and feature, accompanying drawings and embodiment are then more clear.
Fig. 1: a kind of typing feed opening is circle piped master pseudosection.
The vertical view of Fig. 2: Fig. 1.
Fig. 3: a kind of feed opening of finalizing the design is the main pseudosection of rectangular tubular.
The vertical view of Fig. 4: Fig. 1.
Fig. 5: a kind of main pseudosection of the feed opening of finalizing the design.
The vertical view of Fig. 6: Fig. 1.
Fig. 7: a kind of main pseudosection of the feed opening of finalizing the design.
The vertical view of Fig. 8: Fig. 1.
Fig. 9: embodiment 1 typing feed opening is mounted on the structural representation on the aluminium cell crust breaking blanking formula alumina feeding device.
Figure 10: embodiment 1 typing feed opening is mounted on the structural representation on the aluminium cell crust breaking blanking formula alumina feeding device.
Figure 11: embodiment 2 typing feed openings are mounted on the aluminium cell pipeline and push structural representation on the pouring-in reinforced aluminum oxide device.
Figure 12: embodiment 2 typing feed openings are mounted on the aluminium cell pipeline and push structural representation on the pouring-in alumina feeding device.
Shown in its figure: 1 typing feed opening, 2 electrolyte crust layers, 3 ionogen liquation layers, 4 through holes, 5 alumina feeding devices, 6 guiding tremie pipes, 7 metal pipe boxes, 8 metal coupling devices, 9 powdery mulches, 10 aluminum oxide powders, 11 flow into material guiding pipe, 12 force (forcing) pumps, 13 transport pipes, 14 pressure equalisers, 15 flowrate control valves, 16 metal reinforced web members, 17 venting hole passages, 18 upper metal structures, 19 pressurizations flow into jet pipe, 20 extruding stick pushers, 21 anode steel jaws, 22 anode blocks, 23 aluminium liquid, 24 cylinders.
Specific embodiment: the core of technical solution of the present invention is: with high temperature resistant, anti-oxidant, potential resistance to electrolyte contamination erosive metallic substance or refractory materials, be configured to a typing feed opening (promptly usual alleged artificial blanking hole or artificial pinkeye) (1), it is considered as one of parts of aluminum oxide in aluminum electrolytic bath feeding device (5), be mounted on the alumina blanking point position in the ionogen condensation crust layer (2) on aluminum cell electrolyte liquation layer (3) top, cause the blanking point position, form a higher temperature province, make ionogen liquation layer upper surface, forming the incrustive speed of condensation slows down, or do not form the harder crust of condensation substantially, so that the aluminum oxide powder (10) that alumina feeding device (5) is carried can be more smoothly hole by this typing feed opening be through hole (4), conveying is added in the ionogen liquation layer (3) of flexible electrolyte condensation crust layer (2) bottom in the higher temperature region, and prolong the time of fused electrolyte liquation layer fusion aluminum oxide powder and make that decomposing the gas that overflows generation in the electrolysis liquation layer emits by this artificial typing feed opening.
The concrete mode that the reinforced materials device of aluminum oxide in aluminum electrolytic bath is implemented typing feed opening technical scheme is:
As Fig. 1, shown in Figure 2: in the ionogen condensation crust layer (2) on aluminum cell electrolyte liquation layer (3) top, the position of alumina blanking point, with high temperature resistant, anti-oxidant, potential resistance to electrolyte contamination erosive metallic substance or refractory materials, structure is installed the oxygen aluminium powder to be carried and is added in the ionogen liquation layer (3), have alumina feeding and exhaust artificial calibration tube bulk component with through hole (4), it is artificial typing feed opening (1), and its parts as aluminum oxide in aluminum electrolytic bath feeding device (5), link together with guiding tremie pipe (6), installation constitution is in the middle of the ionogen condensation crust layer (2) of aluminum oxide in aluminum electrolytic bath blanking point position, cause the alumina feeding device (5) of aluminium cell, can be by this synthetical typing feed opening (1), with aluminum oxide powder (10) carries smoothly the ionogen melting layer (3) that adds in the aluminium cell interior in.
As Fig. 3 to shown in Figure 9: the typing feed opening (1) of alumina feeding device (5) adopts high temperature resistant, anti-oxidant, potential resistance to electrolyte contamination erosive metallic substance or refractory materials to make the rectangle that has through hole (4), cylindrical or trapezoidal tubular object, is provided with aluminum oxide powder (10) flow passage that runs through up and down and electrolytic solution in the middle of the typing feed opening (1) and overflows that to discharge gas discharge channel be through hole.
The material of typing feed opening (1) is general Heat resisting cast steel or the heat resisting iron of adopting when selecting metallic substance for use, comprises heat-resisting spheroidal graphite cast iron.The material of typing feed opening (1) is made at the material of selecting for use potential resistance to electrolyte contamination erosive refractory materials promptly to produce refractory brick, makes as materials such as silicon nitride combined silicon carbide, magnesium-aluminium spinel, zircon corundum, mullite, corundum brick materials; Can also adopt potential resistance to electrolyte contamination (3) erosive carbon element of graphite material to make; Or make composite material element with metallic substance and refractory materials.
As Fig. 5, Fig. 9, Figure 12, shown in: the horizontal section of the typing feed opening (1) of alumina blanking device (5) is shaped as round or rectangular tubular, the facade shape of typing feed opening (1) is a rectangle or trapezoidal, and its intermediary duct is that the reinforced passage of aluminum oxide powder is through hole (4) and overflows vent (17).
As Figure 10, Figure 11, shown in Figure 12: the interior installation constitution of through hole (4) of alumina blanking device (5) typing feed opening (1) bosom has metal pipe box (7); Metal sleeve (7) can be used as the interior hole path of typing feed opening, also can be used as the lower end prolongation of alumina feeding device (5) guiding tremie pipe (6), is connected with guiding tremie pipe (6).
Extremely shown in Figure 13 as Figure 10: typing feed opening (1) top of alumina blanking device (5) is provided with metal coupling device (8), its metal coupling device is used to the typing feed opening (1) that reinforces the connection and make with refractory materials, when on electrolyzer, installing, construct with aluminium cell top lifting mechanism (11) and to be connected, so that the feed opening (1) of will finalizing the design is fixed in the electrolyte crust layer.
Typing feed opening (1) top of alumina blanking device (5) is provided with metal coupling device (8) as shown in the figure, can be connected with the guiding tremie pipe (6) of alumina blanking device, and interchangeable alternative join-together structure links together with aluminium cell upper metal structures structure together, make guiding tremie pipe (6) promptly possess guiding blanking function, possess the linkage function of metal coupling device (8) again.
As figure, shown in: when alumina blanking device (5) typing feed opening (1) installed and fixed on aluminium cell, the setting of typing feed opening was installed on the position of the alumina blanking point in the aluminum cell electrolyte liquation layer upper electrolyte crust layer (2); Typing feed opening (1) baseplane, lower end is arranged on the upper end of fused electrolyte (3) layer, and maintains the distance of certain height, washes away erosion with ionogen liquation undulated layer and is advisable less than typing feed opening (1).
As figure, shown in: after installation on the aluminium cell is provided with the typing feed opening (1) of alumina blanking device (5), because typing feed opening (1) links to each other with guiding tremie pipe (6), the aluminum oxide powder inflow material guiding pipe (11) of its existing general crust breaking point type interval blanking alumina feeding device just can directly connect with the guiding tremie pipe and be connected, cause the aluminum oxide powder process, passage in inflow material guiding pipe (11) and guiding tremie pipe and the typing feed opening flows directly into and adds in the ionogen liquation layer, and the realization aluminum oxide powder is carried continuously to the additional omnidistance pipeline that adds aluminum oxide of ionogen liquation layer.Thereby eliminate the power loss that aluminum oxide powder will fly upward loss and aluminium cell smoke discharging dust removing system through the aluminum oxide powder that the aluminium cell negative pressure space zone that flows between material guiding pipe (11) lower port and the electrolyte crust layer crust breaking feed opening is caused.Make that aluminum oxide powder is more accurate to be added in the ionogen.
As figure, shown in: the typing feed opening (1) of alumina blanking device (5) is after installation constitution is finished on the aluminium cell, fill closely knit with the slit that powdery mulch (9) will crust between layer (2) the typing feed opening (1), the feed opening (1) that prevents to finalize the design is oxidized, and simultaneously it is implemented insulation, temperature in typing feed opening (1) through hole (4) is remained in the higher warm area as far as possible, prevent or slow down the ionogen liquation layer generation condensation crust in typing feed point zone, feed opening (1) bottom, remain the reinforced passage of aluminum oxide powder (10) and overflow exhaust-duct unimpeded under the electrolysis working condition, causing the aluminum oxide powder (10) that come by guiding tremie pipe (6) input all the time can successive to flow in the ionogen liquation layer (3) goes, and isostatic is participated in the thermoelectrochemistry reaction, generation electrolytic metal aluminium liquid.
Aluminium cell is at the electrolysis production run duration, be arranged on aluminum oxide in aluminum electrolytic bath feeding device lower end, the lower end of the typing feed opening (1) in the ionogen liquation layer upper electrolyte crust layer, if because of ionogen liquation layer (3) temperature is crossed the low flexible cold shell that condenses that produces, or when assemble producing accumulation horizon because of aluminum oxide powder, the available extruding stick pusher that is arranged among the alumina feeding device guiding tremie pipe, under the effect of upper cylinder piston rod, push and be expressed in the ionogen liquation layer accumulating in aluminum oxide powder in typing feed opening lower end and the blanking point zone, ionogen liquation layer top, and form the reinforced and electrolysis of new aluminum oxide powder in this zone and overflow the gas exhaust passage.Pusher extruding rod (14) is arranged on the upper end of typing feed opening (1) through hole (4), has the function of insulation cover plate.
Embodiment 1: adopt existing general crust breaking blanking point type aluminum oxide alumina blanking device (5) at interval, on aluminium cell, install typing feed opening (1), existing crust breaking cutting agency device is undergone technological transformation, make it to become the omnidistance pipeline of a kind of novel aluminum oxide in aluminum electrolytic bath powder and continuously flow into the reinforced device that in ionogen liquation layer, adds supplemental aluminium of conveying point type.
As Fig. 2, it is shown in Figure 15: when the electrolyzer aluminum oxide adopts crust breaking blanking device (5) and charging box and constant-volume blanking apparatus to carry out blanking, the constant volume device (13) of its charging box (12) lower end is connected with inflow material guiding pipe (11), transform when implementing, the lower end that will flow into material guiding pipe (11) connects with the guiding tremie pipe (6) that is arranged on typing feed opening (1) upper end and is connected, and causes by the aluminum oxide powder of letting out under the constant-volume blanking device (13) (10) by flowing into material guiding pipe (11), guiding tremie pipe (6) and setting are configured in the interior through hole (4) of typing feed opening (1) and are fed directly to ionogen liquation layer (3) and get final product.
If because of temperature in typing feed opening (1) through hole (4) and the ionogen liquation layer blanking point zone low excessively, the shell and the matter flexible cold that produces electrolysis is condensed, or aluminum oxide powder is when this assembles the generation accumulation horizon, can make the pusher extruding rod (14) that is arranged in the guiding tremie pipe (6), under the to-and-fro movement effect of cylinder piston, drive pusher extruding rod (14) by piston and connecting rod and move downwards, be pushed in the ionogen liquation layer and get final product being retained in this regional aluminum oxide powder (10) extruding.The motion lower dead center position ionogen liquid layer (3) of the lower surface of the pusher extruding rod (14) of this device is more than the upper surface, and top dead center is set in and flows into the material guiding pipe (11) and tremie pipe (6) the connection upper end of through hole mutually of leading.
The limit sensors device is set in case the lower surface of thrust material extruding rod (20) is inserted in the ionogen liquation layer (2) on air cylinder connecting rod or guide link, avoids the ionogen liquation to corrode and fuse pusher extruding rod (20).
Embodiment 2: as Figure 13, shown in Figure 16: the typing feed opening (1) of aluminum oxide in aluminum electrolytic bath blanking device, with by aluminum oxide powder force (forcing) pump (12), aluminum oxide powder transport pipe (13), pipeline pressure equilibrator (14), the pipeline that aluminum oxide powder flowrate control valve parts such as (15) are formed pushes pouring-in alumina feeding matched with devices when using, the inflow filling tube (11) of alumina feeding device flows into jet pipe (11) for the aluminum oxide powder pressurization, in the through hole (4) and guiding tremie pipe (11) of its installation constitution in typing feed opening (1), aluminum oxide powder pressurization flows into the upper end of jet pipe (11), is connected with the exit end transport pipe of the flowrate control valve of this alumina feeding device.
The upper end setting that continuous feeding type alumina feeding device (6) typing feed opening (1) is injected in the pipeline extruding is equipped with metal coupling device (8), the upper end of metal connecting piece (8) is connected with upper part of the electrolytic cell metal construction (16), so that will finalize the design feed opening (1) installation constitution in the electrolyte crust layer (2) that aluminum oxide in aluminum electrolytic bath blanking point (5) is located.Bottom surface and ionogen liquation layer (3) upper surface of typing feed opening (1) maintain a certain distance, and can avoid fused electrolyte liquation layer (3) fluctuation the erosion of washing away of feed opening (1) lower end of finalizing the design is got final product.What the conveying feeding device was injected in this pipeline extruding is that the aluminum oxide powder pressurization flows into the intermediary through hole (4) that jet pipe (11) is inserted into typing feed opening (1).
Claims (10)
1. be provided with the aluminium cell of aluminum oxide typing feed opening, it is characterized in that: in aluminium cell on the electrolyte crust layer (2), the position of alumina blanking point, structure is set installs typing feed opening (1), cause the alumina feeding device (5) of aluminium cell, can be by artificial typing feed opening (1), in the ionogen liquation layer (3) with electrolyte crust layer (2) bottom in aluminum oxide powder (10) input adding to the aluminium cell.
2. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: its typing feed opening (1) forms with high temperature resistant potential resistance to electrolyte contamination erosive metallic substance or refractory materials manufacturing; It is shaped as rectangular tubular piece, cylindrical tubular piece or the trapezoidal tubular slug that has hole; Cause the alumina feeding device (5) of aluminium cell, the through hole (4) of oxygen aluminium powder (10) by this typing feed opening (1) can be added in the ionogen liquation layer.
3. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: its typing feed opening (1) is provided with and can discharges the venting hole passage (17) that gaseous emission comes out with overflowing in the electrolyte solution.
4. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: be provided with through hole (4) and venting hole passage (17) in its typing feed opening (1), its through hole (4) and venting hole passage (17) connect.
5. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: its typing feed opening (1) is as the parts of aluminum oxide in aluminum electrolytic bath feeding device (5), top links together with guiding tremie pipe (6), and the bottom is mounted in the electrolyte crust layer (2) of aluminum oxide in aluminum electrolytic bath blanking point position.
6. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: typing feed opening (1) is gone up installation constitution metal connecting piece (8), after feed opening (1) will be arranged in the aluminum cell electrolyte crust layer (2) so that will finalize the design, be fixed on the upper metal structures (18) of aluminium cell.
7. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: when the typing feed opening adopted the refractory brick material to make, its typing feed opening (1) was gone up installation constitution and is provided with metal reinforced web member (16).
8. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: be provided with in the duct, inside of typing feed opening (1) and be configured with the guide tremie pipe (6) that is used for aluminum oxide in aluminum electrolytic bath feeding device (5) and the feed opening (1) of finalizing the design and weld and fixedly connected metal pipe box (7).
9. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: the lower end of the typing feed opening (1) of aluminum oxide in aluminum electrolytic bath feeding device (5) is installed when being provided with on electrolyzer, be configured in the electrolyte crust layer (2) on aluminum cell electrolyte liquation layer (3) top, the upper surface of baseplane and ionogen liquation layer (3) has the distance of certain altitude under its typing feed opening (1), washes away erosion to prevent that the ionogen liquation from causing the typing feed opening made from metal or refractory brick material (1).
10. according to the described aluminium cell that is provided with aluminum oxide typing feed opening of claim 1, it is characterized in that: the typing feed opening (1) of aluminum oxide in aluminum electrolytic bath feeding device (5) is that the extruding tremie pipe (19) or extruding stick pusher (20) the positioning and guiding passage of alumina feeding device (5) also can pass through wherein in its through hole (4) after installation on the aluminium cell is provided with.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947981A (en) * | 2016-08-05 | 2017-07-14 | 高德金 | A kind of aluminum oxide crust breaking and loading device |
| FR3062137A1 (en) * | 2017-01-24 | 2018-07-27 | Rio Tinto Alcan International Limited | DEVICE FOR ALUMINATING AN ELECTROLYSIS TANK |
| CN117051440A (en) * | 2023-09-18 | 2023-11-14 | 北京华索科技股份有限公司 | Crust breaking and blanking method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947981A (en) * | 2016-08-05 | 2017-07-14 | 高德金 | A kind of aluminum oxide crust breaking and loading device |
| CN106947981B (en) * | 2016-08-05 | 2022-01-07 | 高德金 | Alumina crust breaking and feeding device |
| FR3062137A1 (en) * | 2017-01-24 | 2018-07-27 | Rio Tinto Alcan International Limited | DEVICE FOR ALUMINATING AN ELECTROLYSIS TANK |
| CN110225999A (en) * | 2017-01-24 | 2019-09-10 | 力拓艾尔坎国际有限公司 | Equipment for aluminium oxide to be supplied to electrolytic cell |
| EP3580373A4 (en) * | 2017-01-24 | 2020-12-02 | Rio Tinto Alcan International Limited | Device for supplying alumina to an electrolytic cell |
| CN110225999B (en) * | 2017-01-24 | 2021-09-07 | 力拓艾尔坎国际有限公司 | Apparatus for supplying alumina to an electrolytic cell |
| AU2018213430B2 (en) * | 2017-01-24 | 2023-05-25 | Rio Tinto Alcan International Limited | Device for supplying alumina to an electrolytic cell |
| CN117051440A (en) * | 2023-09-18 | 2023-11-14 | 北京华索科技股份有限公司 | Crust breaking and blanking method |
| CN117051440B (en) * | 2023-09-18 | 2024-04-09 | 北京华索科技股份有限公司 | Crust breaking and blanking method |
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Application publication date: 20111123 |