CN108166017A - A kind of pre-calcining electrolytic cell production technology - Google Patents

A kind of pre-calcining electrolytic cell production technology Download PDF

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Publication number
CN108166017A
CN108166017A CN201611165558.0A CN201611165558A CN108166017A CN 108166017 A CN108166017 A CN 108166017A CN 201611165558 A CN201611165558 A CN 201611165558A CN 108166017 A CN108166017 A CN 108166017A
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anode
carbon block
block
anode carbon
electrolytic cell
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高德金
高伟
王晓宇
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12Anodes
    • C25C3/125Anodes based on carbon

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

A kind of pre-calcining electrolytic cell production technology of the present invention, technical characteristic are:During aluminum electrolysis, in the top of pre-baked anode carbon blocks and the periphery of anode steel claw head, installation buckles the anode carbon block top covering and heat insulating layer being made of 2 pieces or more sizing insulation combination blocks, the covering and heat insulating layer is by polylith sizing insulation combination block, it using anode carbon block center line as the axis of symmetry, is mutually arranged composite construction and forms, the outer profile of insulating layer is rectangle, plane projection with anode carbon block outer profile overlaps, and it is intermediate there are anode steel claw head by spatial position.The program has following technical advantage:In the existing production technology of aluminium cell, heat absorption and the heat leakage of covering and heat insulating layer crust can be reduced, the energy consumption of electrolytic aluminium in process of production is reduced, reduces the logistics turnover amount of mulch and break process workload, the process links of anode scrap prune job are reduced, reduce the production cost of enterprise.

Description

A kind of pre-calcining electrolytic cell production technology
Technical field:A kind of pre-calcining electrolytic cell production technology, main application and the Aluminum Electrolysis Production of preparation aluminium cell.
Technical background:For existing pre-calcining electrolytic cell during electrolysis production is carried out, an important production process is more Change anode operation, i.e. the certain thickness when anode carbon block consumption, when electrolyte solution corrosion injure anode steel claw head it is safe when, It need to carry out replacing the operation of anode carbon block, i.e., anode scrap anode carbon block out of aluminium electrolysis cell thorax be taken out, replace with a height New anode carbon block as before.The anode carbon block newly replaced enter slot it is in place after, in order to promote the heating rate of anode carbon block, prevent Anode carbon block aoxidizes, and reduces the heat leakage of aluminium electrolysis cell anode carbon block, ensures the thermal balance of aluminium cell, need to be in new anode carbon block Upper surface part addition electrolysis material powder and alumina powder bulk granule materials as main component, on anode carbon block top Form mulch insulating layer of the thickness in 15cm to 18cm thickness.
During electrolysis production, it is covered in the bulk particle mulch on anode carbon block top in aluminium cell, it can be with Anode carbon block consumes, and the raising of temperature sinters a bulk into, which can be by anode carbon block top, so that whole The mulch on a aluminium electrolysis cell anode carbon block top sinters the mulch crust block layer of an entirety into, is commonly called as mulch crust Block.(as shown in attached drawing 1, attached drawing 2)
The mulch crust block after the anode carbon block top sintering sizing in aluminium cell, intensity and temperature compared with Height in aluminum electrolysis cell anode replacement, needs to use multifunction crane crust-breaking chips, the mulch crust block of anode scrap edge is beaten It opens, (being commonly called as out side seam operation), it then, could be by anode scrap carbon block and mulch crust block layer in red heat state, from aluminium It is taken out in electrolytic cell, and replaces the new anode carbon block of lastblock.
Anode scrap carbon block and anode steel claw and mulch the crust layer just taken out out of aluminium cell is sintered together, Red heat state is in, mean temperature is at 700 DEG C or so.In order to enable anode steel claw and mulch repeat utilization, with And pour into a mould steel pawl anode carbon block again in the bottom of anode steel claw, it need to first clean up the mulch crust on anode carbon block top.Its Cleaning process is:After anode scrap carbon block and the crust layer cooling of electrolyte mulch, crushed using mechanical interference or manually hammered Electrolyte mulch crust layer is crushed, and cleared up from anode scrap carbon block, is then covered by these by broken method Material crust layer block, is transported to Mechanical Crushing system and device, after being broken into granular material, backs within electrolysis production technique In, it is added to the anode carbon block top newly replaced, is reused as mulch.
Existing general aluminium cell production technology, this particle powder material using powdery indefinite form is as anode carbon block The top mulch mode of production in Aluminum Electrolysis Production industry, has continued several years, this production technology operating type exist with Lower defect;
1st, mulch crust layer is formed with electrolyte and alumina particle granular material, is sintered in electrolytic cell and forms hard During crust, a large amount of thermal energy can be absorbed, wastes electrolysis energy consumption.
2nd, during change poles, the mulch crust layer for the red heat state taken out of from anode scrap carbon block top can be in aluminium electricity Can scatter and disappear a large amount of idle thermal energy outside solution slot, waste electrolysis energy consumption.
3rd, in the broken anode scrap carbon block top mulch crust of cleaning, make mulch crust and anode scrap carbon block and anode steel In pawl head separation process, a large amount of labour workload and mechanical energy consumption can be not only consumed, but also can be generated during it a large amount of Dust polluting environment.
4th, electrolyte crust block is broken into granulated powder, forms the repeatable process of mulch powder utilized In, a large amount of labour workload and mechanical energy consumption can be not only consumed, also generates a large amount of dust, pollutes environment.
5th, anode scrap is being replaced, when carrying out opening wing's operation in aluminium cell, it is random can so that mulch crust generates It is broken, particulate material block is formed, these particulate material blocks go out in anode scrap in slot operation, can be from the electricity that edge is fallen in anode scrap carbon block It solves in matter liquid, the chemical component fluctuation of electrolyte solution can be caused, be unfavorable for Aluminum Electrolysis Production.
6th, when replacing anode scrap, due to there is part mulch crust block that can crash into electrolyte solution, to prevent mulch Crust block pollutes electrolyte, carries out fishing block operation.This labor operation carries out under high temperature environment, and not only environment is arduous, And working strength is larger.
Existing pre-calcining electrolytic cell production technology, is produced using pre-baked anode carbon blocks, and it is not to carry out pole changing The process that can be avoided and eliminate.During pole changing, the addition mulch operation work to anode carbon block will be necessarily led to Sequence, the above-mentioned treatment component to mulch of generation.
During existing electrolytic aluminium production process, cleaning and broken, conveying to anode scrap carbon block top mulch Material has bad luck workload, and the proportion for accounting for workload during Aluminum Electrolysis Production is quite big, and need to be passed through considerable equipment into Row configuration, and drawbacks described above can be generated.
Either with or without method, a kind of new production technology is innovated, is changed existing traditional in anode carbon block addition bulk covering Expect operating type so that the probability and negative effect that drawbacks described above generates are minimizedThis is electrolytic aluminum industry engineering technology The target that personnel pursue always.
Invention content:In order to reduce in the existing production technology of aluminium cell, using particle powdery mulch as anode carbon Drawbacks described above caused by the mulch of block top reduces heat absorption and the heat leakage of covering crust, reduces electrolytic aluminium and producing Energy consumption in journey reduces the logistics turnover amount of mulch and break process workload, reduces the process links of anode scrap prune job, Mitigate the labor intensity of worker, reduce the production cost of enterprise.The present invention proposes a kind of new pre-calcining electrolytic cell production work Skill technical solution, i.e., a kind of new technical solution that covering and heat insulating is carried out to aluminium electrolysis cell anode carbon block top.
1st, a kind of new innovative solution that covering and heat insulating is carried out to aluminium electrolysis cell anode carbon block top.Its art feature It is:During aluminum electrolysis, in the top of pre-baked anode carbon blocks and the periphery of anode steel claw head, installation is buckled by 2 pieces The anode carbon block top covering and heat insulating layer that above sizing insulation combination block is formed, the covering and heat insulating layer are shaped insulation combination by polylith Block using anode carbon block center line as the axis of symmetry, is mutually arranged composite construction and forms, and the outer profile of insulating layer is rectangle, with The plane projection of anode carbon block outer profile overlaps, and it is intermediate there are anode steel claw head by spatial position.
On aluminium electrolysis cell anode carbon block top, using sizing insulation combination block construction anode carbon block top heat preservation coating Purpose is so that constructs the sizing covering and heat insulating block on the top of anode carbon block in the case of without broken turnover, has Repeatable turnover usability;And in a manner that this substitutes former design bulk electrolyte alumina particle powder addition covering, The operating type (abbreviation bulk coating material layer) of anode carbon block superstructure indefinite form mulch insulating layer.
2 according to above-mentioned technical proposal, during aluminum electrolysis, after anode scrap carbon block is taken out out of electrolytic cell, in structure The insulating layer sizing insulation combination block on anode scrap carbon block top is made to remove with split, and be movably mounted to another piece it is new On anode carbon block.
The purpose for the arrangement is that:Cause sizing insulation combination block that can directly reuse, can not only reduce mulch Volume of the circular flow and also can reduce mulch hard crust broken workload.
3rd, according to above-mentioned technical proposal, during aluminum electrolysis, when carrying out replacing anode carbon block operation, original can be pacified Insulation combination block mounted in anode scrap carbon block top carries out unloading under red heat work condition state and removes, and directly transfer is mounted on another One piece of anode carbon block top newly replaced, is reused.
The purpose for the arrangement is that one is available with the thermal energy of sizing insulation combination block under red heat state to new anode carbon The ferrophosphorus ring of block is heated, and is allowed to Quick conductive, reduces the electricity drop of new anode carbon block steel pawl group;Second is that prevent sizing heat preservation group After closing block cooling, the secondary thermal energy waste power consumption repeated to absorb in electrolytic cell in electrolytic cell.
4th, according to above-mentioned technical proposal, during aluminum electrolysis, the sizing heat preservation group above anode carbon block Block is closed, electrolyte solution of getting along well in aluminium electrolysis cell thorax is in contact;Even if anode is relatively thin or anode scrap will go out the operating mode of slot Under the conditions of, the electrolyte solution also got along well in slot thorax is in contact.
The purpose for the arrangement is that prevent electrolyte solution will shape insulation combination block scaling loss, cause sizing insulation combination block object The chemical composition pollution electrolyte solution of material.
It 5th,, can be in new anode carbon block when replacing anode carbon block during aluminum electrolysis according to above-mentioned technical proposal After one layer of alumina powder of upper surface place mat or the electrolyte powder bed of material, then sizing insulation combination block layer is installed at an upper portion thereof.
The purpose for the arrangement is that:When be placed in order to prevent anode carbon block top and anode steel claw head periphery determine The bottom surface of type insulation combination block generates installation gap between anode carbon block upper surface, causes thermal current to anode carbon block Oxidation corrosion scaling loss, second is that preventing sizing mulch insulation combination block, in the case where being electrolysed the condition of high temperature and anode carbon block generates sintering, Aggravation shortens the service life of sizing insulation combination block to sizing insulation combination block scaling loss oxidation.
6th, according to above-mentioned technical proposal, during aluminum electrolysis, top and the anode steel claw of anode carbon block are placed in The sizing insulation combination block of the periphery of head of refractory material or insulation construction is made or uses refractory material and metal Combination of materials is made, and has the characteristics of thermal shock resistance is good, reusable.
The purpose for the arrangement is that:First, once electrolyte solution is prevented by insulation combination block scaling loss of shaping, sizing heat preservation group Electrolyte solution will not be polluted by closing the chemical composition of block material, second is that ensureing that sizing insulation combination block can be reusable.
7th, according to above-mentioned technical proposal, it is placed in the sizing heat preservation group of the top of anode carbon block and the periphery of anode steel claw head It closes on block, is provided with location and installation hole or hoisting gripping member.
The purpose of this design is that in order to ensure to be placed in the top of anode carbon block and the peripheral sizing of anode steel claw head Insulation combination block is not only convenient for manual operation, and keep the temperature brick on anode carbon block conducive to sizing mulch in red heat state The location and installation in portion.
A kind of 8 pre-calcining electrolytic cell production technologies, art are characterized in:Insulation combination block is covered by the sizing of polylith monomer, Anode carbon block top installation constitution is into after the covering and heat insulating layer of an entirety, and circumference is rectangle, and there is anode steel claw in centre Head by spatial position.
Using the present invention on pre-baked anode carbon blocks of aluminum cell top, sizing insulation combination block is fastened with installation, in anode The method that heat preservation is implemented on carbon block top is to substitute the prior art to implement mulch on anode carbon block top using particle powder material The technical solution of insulating layer operation, the program have following technical advantage:In the existing production technology of aluminium cell, it can reduce and cover The heat absorption of lid insulating layer crust and heat leakage reduce the energy consumption of electrolytic aluminium in process of production, reduce the logistics week of mulch Turn amount and break process workload, reduce the process links of anode scrap prune job, mitigate the labor intensity of worker, reduce enterprise Production cost.
Description of the drawings:The present invention a kind of technical solution and innovative point of pre-calcining electrolytic cell production technology, pass through specification The statement of the drawings and specific embodiments, then be more clear.
Fig. 1, the prior art implement anode carbon block using particle powdery mulch the aluminium cell operating mode after heat retaining operation 1/2 front view of state
Fig. 2, the A-A direction views for being Fig. 1
Fig. 3, implement the aluminium cell operating mode after heat retaining operation to anode carbon block using sizing insulation combination block for the present invention 1/2 front view of state.
Fig. 4, the A-A direction views for being Fig. 3.
After Fig. 5, insulation combination block of shaping for the peripheral configuration installation of the invention in anode carbon block top anode steel claw head Front view.
Fig. 6, the vertical view for being Fig. 5.
Fig. 7, the anode carbon for being equipped with powder layer between anode carbon block top and sizing insulation combination block for the present invention The front view of block.
Fig. 8, the sectional side view for being Fig. 7
Shown in its figure:1 slot upper level cover board, 2 slot side closures, 3 aluminum guides, 4 anode steel claw crossbeams, 5 steel pawl heads, 6 slot shells, 7 sideways furnace walls, 8 side furnace walls, 9 level boards, 10 cathode carbon pieces, 11 cathode steel bars, 12 molten aluminums, 13 electrolyte solutions, 14 anode carbon blocks or anode scrap carbon block, 15, bulk mulch, 16 sizing insulation combination block, 17, powder layer, 18 steel pawl heads pass through Semicircle orifice, 19 mounting hangers, 20 ferrophosphorus rings.
Specific embodiment:
As shown in Figure 1 and Figure 2, intrinsic aluminium cell, the top of anode carbon block (14) is covered using bulk in slot Lid material (15) is covered, in electrolytic cell under the action of high temperature, the bulk mulch on each anode carbon block (14) top (15) layer can be sintered into a crust overall.
Original production process, need to be first with the crust-breaking chips of multifunction crane by anode scrap carbon block (14) when carrying out pole changing The crust on periphery opens (being commonly called as out side seam), then, bulk mulch that could by anode scrap carbon block (14) and at an upper portion thereof (15) crust layer takes out out of electrolytic cell, replaces with one group of new anode carbon block steel pawl group, and on the top of anode carbon block (14) Again it adds upper bulk mulch (15) and is kept the temperature in the periphery of anode steel claw head (5).The anode scrap charcoal taken out out of electrolytic cell Block (14) and top mulch (15) crust, upper part bulk mulch (15) crust will be cleaned up from the top of anode carbon block, To carry out residual anode pressure-disengaging, anode scrap carbon block (14) from anode steel claw head (5) is removed, upper one is being poured into a mould with ferrophosphorus ring (20) The new anode carbon block of block (14), to be used out of new input electrolytic cell.It crushes and is removed not from anode scrap anode carbon block (14) top Bulk mulch (15) crust block of rule, will be crushed, after form of powdery particles is made, repeat to be used in turn.
A kind of aluminium cell production technology of the present invention is that above-mentioned intrinsic change poles addition mulch flow chart is changed Into innovation, as shown in Figure 2 and Figure 3, the characteristics of production technology newly innovated, is, on the top of anode carbon block (14), the sizing of use Insulation combination block (16) substitutes original as the thermal insulated material for covering component on anode carbon block in aluminium cell (14) top, and with secondary Bulk mulch (15) the heat preservation bed of material of design.There are two types of modes for its Specific construction operational method:
One kind is the outer working system of slot, i.e., outside electrolytic cell, first with sizing insulation combination block (16), fastens and be mounted on anode carbon Behind block (14) top, after heat preservation coating is formed on anode carbon block (14) top, as shown in Figure 5, Figure 6, then and anode carbon block (14) it is packed into electrolytic cell together.As shown in Figure 3, Figure 4.
One kind is working system in slot, will newly anode carbon block (14) be encased in electrolytic cell it is in place after, then with suspender, will shape Insulation combination block (16) installation be fastened on the top of new anode carbon block, heat preservation coating is formed on anode carbon block (14) top.
Then, then with bulk mulch (15) edge sealing operation is carried out, i.e., with bulk granule materials by new anode carbon block (14) The gap of former crust adjacent is filled out in gap and new carbon block (14) and electrolytic cell between top insulation combination block (16) Fill covering,.
It in electrolytic aluminium production process, is fastened using being installed on anode carbon block (14) top, with polylith sizing insulation combination The sizing heat preservation coating material layer that block (16) is formed, under the conditions of electrolytic cell work condition state, due to every piece of individual sizing heat preservation group Block (16) is closed, has completed firing sizing, double sintering deformation will not be carried out under the variation of aluminium cell temperature of thermal field, and And the sintering connection of harder intensity is generated in electrolytic cell between adjacent carbon block (14) and crust.In this way, it is residual to treat that anode is depleted to In the pole stage, after anode scrap takes out out of electrolytic cell, installation is fastened on multiple sizing insulation combination blocks (16) on anode scrap top, it is possible to Split dismounting is intactly carried out one by one, and can be directly installed on again in new anode (14) carbon block.
As shown in Figure 7, Figure 8, it due to anode carbon block (14) construction and insulation combination block (16) preparation etc., protects Warm combination block (16) bottom and the top of anode carbon block (14) fasten at combination interface in installation, may generate gap, if Gap is excessive at this, may influence the covering and heat insulating effect of mulch insulation combination block (14), causes anode carbon block (14) Scaling loss aoxidizes, and in the following manner can be used thus and solved.
First, first in the upper face of anode carbon block (14), paving spills last layer alumina eltrolysis matter powder (17), then in powder The bed of material (17) top upper sizing insulation combination block (16) installed above.
Second is that the upper face in anode carbon block (14) smears last layer carbon clay layer, then on carbon clay layer top Install sizing insulation combination block (16) in face.
Third, the upper face in anode carbon block (14) smears last layer antioxidant coating, then on antioxidant coating, top Sizing insulation combination block (16) installed above.
The purpose for the arrangement is that:It is placed in the top of anode carbon block (16) and the periphery of anode steel claw head (5) in order to prevent Sizing insulation combination block (16) bottom surface and anode carbon block (14) upper surface between generate installation gap, reduce thermal current to sun The oxidation corrosion scaling loss of pole carbon block (14).
A kind of pre-calcining electrolytic cell production technology of the present invention is in the process characteristics for replacing anode carbon block Job Operations:
(1) top of anode carbon block (14) carries out heat preservation covering using sizing insulation combination block (16).
(2) anode scrap and sizing insulation combination block (16) mounted on anode scrap carbon block (14) top are taken out of electrolytic cell After going out, at once with tools such as crowbars, under red heat work condition state, by the polylith sizing insulating layer combination block (16) on anode scrap top into Row stripping movement, is then installed with suspender and is buckled on the anode carbon block (14) of new anode carbon block steel pawl group being ready for.
Note:Show under red heat work condition state through commerical test, sizing insulation combination block (16) and anode scrap carbon block (14) It is easier to remove and easily carry out the cleaning of edge binding material.
(2) on anode carbon block (14) top, installation buckles sizing insulation combination block (16), forms a complete anode After carbon block heat preservation coating, anode carbon block steel pawl group should be immediately placed in and be arranged in aluminium cell, and is in place in anode carbon block Afterwards, edge sealing overwrite job is carried out to it with covering feed powder (15) immediately.
If note, cannot in time by install buckle sizing mulch heat preservation block layer anode steel claw group be put into electrolysis When in slot, the sizing mulch under red heat state should be kept the temperature brick (16) and covered, prevent its heat leakage.
The purpose done so can utilize the thermal energy of sizing insulation combination block (16) under red heat state to new anode carbon block (14) ferrophosphorus ring (20) is quickly heated, and is allowed to Quick conductive, reduces the voltage drop of new anode carbon block steel pawl group;It is second is that anti- It is secondary to repeat to absorb in electrolytic cell after fastening type heat insulating block (16) cooling, thermal energy.
The bottom of sizing insulation combination block (16), the shape according to anode carbon block (14) superstructure are designed, you can Also can be that concaveconvex shape constructs for planar configuration.
Using the present invention, with sizing insulation combination block (16), substitute bulk mulch (15) and anode carbon block top is implemented After heat retaining operation technique, it should be noted that in aluminium cell, the contact work of anode carbon block (14) top and electrolyte solution (13) is high Degree, prevents under the relatively thin working condition of anode carbon block (14), i.e., when anode scrap is formed, electrolyte solution (13) and sizing insulation combination Eroding contact occurs for block (16).In this way, i.e. available prevent electrolyte solution (13) from causing scaling loss to sizing insulation combination block (16), Extend the service life period of sizing insulation combination block (16), ensure that the material chemical composition of sizing insulation combination block (16) Electrolyte solution (13) is polluted.

Claims (7)

1. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, in pre-baked anode carbon blocks (14) top and the periphery of anode steel claw head (5), installation are buckled by 2 pieces or more monomers sizing insulation combination blocks (16), structure Cause anode carbon block 14) the heat preservation coating on top;The heat preservation coating is by polylith sizing insulation combination block (16), with anode carbon Block (14) center line is the axis of symmetry, is mutually arranged composite construction and forms, and the overall peripheral profile of the heat preservation coating is rectangle, And it is intermediate there are anode steel claw head (5) by locational space.
2. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, anode scrap carbon block (14) After being taken out out of electrolytic cell, construction can in the sizing insulation combination block (16) of the heat preservation coating on anode scrap carbon block (14) top It is removed, and is movably mounted on another piece of new anode carbon block (14) with split.
3. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, replacement anode carbon block is carried out (14)) during operation, original can be mounted on to the sizing insulation combination block (16) on anode scrap carbon block (14) top, in red heat work condition state Under carry out unloading and remove, directly transfer is mounted on another piece of anode carbon block (14) top newly replaced and anode steel claw head (5) Periphery forms the top heat preservation coating of new anode carbon block, is reused.
4. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, mounted on anode carbon block (14) the sizing insulation combination block (16) on top, the electrolyte solution (13) got along well in slot thorax are in contact.
5. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, anode carbon block (14) is replaced When, it can be after one layer of powder layer of upper surface place mat of new anode carbon block (14), then sizing insulation combination block is installed at an upper portion thereof (16)。
6. a kind of pre-calcining electrolytic cell production technology, art are characterized in:During aluminum electrolysis, it is placed in anode carbon block (14) top and the sizing insulation combination block (16) of the periphery of anode steel claw head (5), using to electrolyte solution (13) nothing The refractory material or thermal insulation material that pollution and potential resistance to electrolyte contamination liquid (13) corrode are made.
7. a kind of pre-calcining electrolytic cell production technology, art are characterized in:It is placed in top and the anode steel claw of anode carbon block (14) On the sizing insulation combination block (16) of the periphery of head (5), it is provided with location and installation hole or hoisting gripping member.
CN201611165558.0A 2016-12-07 2016-12-07 A kind of pre-calcining electrolytic cell production technology Pending CN108166017A (en)

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CN107245728A (en) * 2017-04-22 2017-10-13 高德金 A kind of anode carbon block top heat-insulation layer configuration structure
CN107287622A (en) * 2017-08-04 2017-10-24 高德金 A kind of Prebaked Anode In Aluminium Cell heat-insulation layer construction process method

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