CN108972840A - A kind of preparation method of electrolytic aluminum anodic steel claw protection semi-ring - Google Patents
A kind of preparation method of electrolytic aluminum anodic steel claw protection semi-ring Download PDFInfo
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- CN108972840A CN108972840A CN201810820146.9A CN201810820146A CN108972840A CN 108972840 A CN108972840 A CN 108972840A CN 201810820146 A CN201810820146 A CN 201810820146A CN 108972840 A CN108972840 A CN 108972840A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
Abstract
The present invention relates to a kind of electrolytic aluminum anodic steel claw protection semi-ring preparation method, have follow steps: 1) salvaging the carbon slag on Bath liquid surface, after being cooled to bulk, crush be for diameter 0.5-2.0mm particulate material；2) by particulate material, coal tar pitch mix, coal tar pitch: particulate material mass ratio be 15:100, be heated to 95-100 DEG C make coal tar pitch melt after stir and evenly mix, obtain extruding raw material；3) extruding raw material is added in extrusion die, squeezes, is cooled and shaped, obtain the protection semi-ring that cross section is semicircular arc.The present invention is by the carbon slag that is generated using electrolytic cell as raw material; extrusion forming obtains protection ring after mixing with coal tar pitch; both the waste residue of aluminium cell generation had been recycled; avoid generation environment pollution problem; half ring quality of protection of preparation is stable, easy for installation, can effectively protect steel pawl, and protection semi-ring is ablated in use; electrolyte and fluoride salt are discharged, electrolyte solution can be also supplemented.
Description
Technical field
The present invention relates to electrolytic aluminium field, in particular to a kind of preparation method of electrolytic aluminum anodic steel claw protection semi-ring.
Background technique
Currently, the steel pawl diameter for the anode that 240kA matched with aluminium electrolyser uses is 140mm, ferrophosphorus ring diameter is 215mm,
Aluminium cell anode service life is 33 days, and anode only has about 150mm by the 33 days thickness that is consumed to from height 620mm.By
In the electrolyte solution height control in electrolytic cell in 930-940 DEG C of 170-190mm, temperature, anode is high after anode consumes 30 days
Degree to 192mm, the electrolyte solution of high temperature is easy to corrode steel pawl and ferrophosphorus ring, and steel pawl is caused to generate " changing pawl " phenomenon, electrolyte solution
Iron content increases, and influences primary aluminum grade and the production cost increases.It therefore, can be in anode steel claw and sun during Aluminum Electrolysis Production
Pole carbon bowl junction, anode steel claw surface put on anode protection ring so that the electrolyte solution in anode steel claw and electrolytic cell is isolated,
To protect anode steel claw not corroded by electrolyte solution.
Currently, anode protection ring carbon material multi-purpose greatly is made as raw material using pitch of binder, through press plus
It is molded, it dries rear enclosure and is used on anode steel claw.Such protection ring antioxygenic property is poor, and compressive resistance is low.In electrolytic cell height
Under the conditions of temperature, if covering without insulation material, this kind of charcoal element protection ring is easy to be oxidised with air to fragment, in change poles operation or in electricity
It solves and is fallen into electrolytic cell under the washing away of matter liquid, anode steel claw is on the one hand made to lose protection, generate " changing pawl " phenomenon, lead to primary aluminum
Grade reduces；On the other hand the carbon slag after aoxidizing is fallen into electrolytic cell, increases the workload that worker fishes out carbon slag, so that cell resistance increases
Add, the energy consumption of electrolysis production rises, and serious person even influences bath life.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of preparations of electrolytic aluminum anodic steel claw protection semi-ring
Method, by the carbon slag that is generated using electrolytic cell as raw material, extrusion forming obtains protection ring after mixing with coal tar pitch, both recycles
The waste residue of aluminium cell generation is utilized, avoids generation environment pollution problem, half ring quality of the protection stabilization of preparation, installation side
Just, it is can effectively protect steel pawl, protection semi-ring is ablated in use, discharges electrolyte and fluoride salt, can also supplement electrolysis
Matter liquid.
The technical scheme is that a kind of preparation method of electrolytic aluminum anodic steel claw protection semi-ring, has follow steps:
1) the carbon slag on Bath liquid surface is salvaged, after being cooled to bulk, crushing as diameter is 0.5-2.0mm
Particulate material；
2) mix particulate material, coal tar pitch, coal tar pitch: particulate material mass ratio is 15:100, is heated to 95-100 DEG C
It is stirred and evenly mixed after melting coal tar pitch, obtains extruding raw material；
3) extruding raw material is added in the type chamber of extrusion die, squeezes, is cooled and shaped, obtaining cross section is semicircular arc
Protect semi-ring.
Carbon slag in step 1) is made of the fluoride salt of the anode slime of 50wt%, the electrolyte of 40wt%, 10wt%.
The fluoride salt is CaF2Or MgF2Or CaF2、MgF2Mixture.
Coal tar pitch in step 2) is hard pitch.
Extrusion die described in step 3) includes mounting bracket, and the molding machine being arranged in mounting bracket, described
Molding machine includes type chamber seat, activity upper core, movable mo(u)ld bottom half core, and the type chamber seat is fixed in mounting bracket, in type chamber seat
Equipped with upper and lower perforative through-hole, the cross-sectional shape of the through-hole is identical as protection semi-ring cross-sectional shape, the activity mo(u)ld bottom half core
Cross-sectional shape it is identical as protection semi-ring cross-sectional shape, movable mo(u)ld bottom half core is supported in mounting bracket, and height is adjustable, living
The lower ending opening of the upper end edge type chamber block hole of dynamic mo(u)ld bottom half core protrudes into type chamber seat, the space shape between movable mo(u)ld bottom half core and through-hole
At extrusion moulding chamber, the cross-sectional shape of the activity upper core is identical as protection semi-ring cross-sectional shape, and activity upper core is logical
It crosses Driven by Hydraulic Cylinder to be slidably fitted in the extrusion moulding chamber of type chamber seat, combination constitutes extrusion die.
It is fixed with a horizontal mounting plate in the mounting bracket, four are fixed on the mounting plate vertically upward
The slide bar of extension, slide plate slides cooperation slide up and down between four slide bars and through Driven by Hydraulic Cylinder, the activity mo(u)ld top half
Core is fixedly mounted on the lower end surface of slide plate, and is aligned with the upper end opening of type chamber block hole.
It is fixed with four threaded rods extended downwards in the mounting bracket, slides and matches on four threaded rods
Conjunction has limit plate and mounting plate, and limit plate is located between mounting plate, type chamber seat, is threadedly engaged four limits on each threaded rod respectively
Nut, four stop nuts are sequentially located at the upper and lower sides of the upper and lower sides of limit plate, mounting plate, limit the height of limit plate, mounting plate
Degree, movable mo(u)ld bottom half core are supported on limit plate, and the lower ending opening of the upper end edge type chamber block hole of movable mo(u)ld bottom half core protrudes into type chamber seat
Interior, an ejection cylinder is fixed on a mounting board, and the piston rod of the ejection cylinder extends through limit plate and movable mo(u)ld bottom half core upward
Connection.
It has the advantages that by adopting the above technical scheme
1, electrolytic cell in electrolytic process because electrolytic cell run bad or anode carbon block cause for quality, on electrolyte solution surface
The carbon slag of floating is generated, these carbon slags influence electrolytic cell and operate normally, need manually to salvage.Present patent application utilizes these carbon
For slag as raw material, 100% recycles electrolysis waste, effectively reduces the cost of manufacturing enterprise's processing waste, and greatly
Reduce the processing cost of protection semi-ring.
2, half ring quality of protection of present patent application preparation is stablized, and is assemblied on anode steel claw, stops electrolyte solution direct
Erosion to steel pawl and ferrophosphorus ring, the electrolyte solution consumption protection semi-ring of high temperature, anode slime full combustion therein, electrolysis
Matter, fluoride salt dissolution, infiltrate in electrolyte solution, may also function as the effect of supplement electrolyte solution.
3, the structure of extrusion in present patent application is simple, easy to use, and extrusion moulding chamber depth is adjustable, can basis
Production needs to squeeze out the protection semi-ring of different height, and the production cost of enterprise's electrolytic aluminium is effectively reduced.
In the present invention, coal tar pitch uses commercially available coal tar pitch, and carbon slag uses Chongqing Guo Feng Industrial Co., Ltd. 320kA
The carbon slag of Bath liquid surface flotation.
It is further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of extrusion die of the present invention；
Fig. 2 is the structural schematic diagram of extrusion die activity upper core of the present invention；
Fig. 3 is the cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of extrusion die profile seat of the present invention；
Fig. 5 is the cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of extrusion die activity mo(u)ld bottom half core of the present invention；
Fig. 7 is the cross-sectional view of Fig. 6；
Fig. 8 is the structural schematic diagram of extrusion die mounting plate of the present invention；
Fig. 9 is the cross-sectional view of Fig. 8；
Figure 10 is the structural schematic diagram of extrusion die slide plate of the present invention；
Figure 11 is the top view of Figure 10；
Figure 12 is the cross-sectional view of Figure 11；
Figure 13 is the structural schematic diagram of extrusion die slide bar of the present invention；
Figure 14 is the structural schematic diagram of extrusion die connecting plate of the present invention；
Figure 15 is the installation diagram of present invention protection semi-ring and anode steel claw.
In attached drawing, 1 is mounting bracket, and 2 be molding machine, and 3 be type chamber seat, and 3a is through-hole, and 4 be activity upper core, and 5 be work
Dynamic mo(u)ld bottom half core, 5a are the first connecting lugs, and 6 be connecting plate, and 6a is resigning breach, and 7 be slide bar, and 8 be threaded rod, and 9 be limit plate,
10 be mounting plate, and 11 be stop nut, and 12 be ejection cylinder, and 13 be fixed plate, and 14 be slide plate, and 14a is the second connecting lugs, 15
It is anode steel claw for hydraulic cylinder, 16,17 be protection semi-ring.
Specific embodiment
Embodiment one
Manually salvage the carbon slag of floating on 320kA Bath liquid surface, carbon slag by 50wt% anode slime,
The electrolyte of 40wt%, the fluoride salt of 10wt% form, wherein anode slime is anode carbon body in electrolytic process, because of matter
The oxidation of amount problem and carbon granules are shedded into electrolyte solution and are formed, and fluoride salt is the additive in electrolyte solution, specially CaF2、
MgF2Mixture.It is 0.5- by crushing in block-like carbon slag addition disintegrating machine as diameter after the carbon slag of salvaging is cooled to bulk
The particulate material of 2.0mm.Particulate material, coal tar pitch are mixed and are added in heating stirring machine, coal tar pitch is hard pitch, coal drip
Green: particulate material mass ratio is 15:100, be heated to 95-100 DEG C melt coal tar pitch after stir and evenly mix 1h, obtain squeezing former
Material.
Take 1.25kg extruding raw material, be added in extrusion die, referring to Fig. 1-14, in the present embodiment, extrusion die it is specific
Structure is, including mounting bracket 1, and the molding machine 2 being arranged in mounting bracket 1, and the molding machine 2 includes type chamber seat
3, activity upper core 4, movable mo(u)ld bottom half core 5.Mounting bracket 1 is the rectangular frame structure being formed by welding using muti-piece angle steel, installation
The upper end of bracket 1 is by being welded and fixed equipped with horizontal connecting plate 6, specifically, the connecting plate 6 uses steel plate, the quadrangle of steel plate
It is welded respectively with four the upper end of the column of mounting bracket 1.The middle part of connecting plate 6 is equipped with resigning breach 6a, and resigning breach 6a is in interior
It is the semicircular arc of 250mm that diameter, which is 150mm, outer diameter,.Four slide bars extended straight up 7 are fixed on connecting plate 6, and
Four threaded rods 8 extended downwards, in the present embodiment, four slide bars 7 are arranged in the distribution of 2*2 matrix in connecting plate 6
On, the both ends of each slide bar 7 are miner diameter end and are respectively equipped with thread segment, and the miner diameter end of each 7 lower end of slide bar passes through connecting plate
6, and be threadedly engaged nut and form a fixed connection, four threaded rods 8 expire silk screw rod using M16*500, are distributed screw thread in 2*2 matrix
Cooperation is on connecting plate 6 and by being threadedly engaged nut fastening.The type chamber seat 3 is fixedly mounted on the lower end surface of connecting plate 6,
Between four threaded rods 8, specifically, the upper surface of the type chamber seat 3 is set there are three threaded hole, is passed through and connected by three bolts
Fishplate bar 6, threaded hole corresponding with type chamber seat 3 are threadedly engaged, and type chamber seat 3 is fixedly mounted on 6 lower end surface of connecting plate.Type chamber seat
There is upper and lower perforative through-hole 3a, the cross-sectional shape of the through-hole 3a is in the semicircle that internal diameter is that 150mm, outer diameter are 250mm in 3
Arc, and be aligned in the resigning breach 6a of semicircular arc, the perforative depth of through-hole 3a is 180mm.On four threaded rods 8
It is sliding combined with limit plate 9 and mounting plate 10, limit plate 9 is located between mounting plate 10, type chamber seat 3, and spiral shell is distinguished on each threaded rod 8
Line cooperates four stop nuts 11, and four stop nuts 11 are sequentially located at the upper and lower sides of the upper and lower sides of limit plate 9, mounting plate 10,
Limit limit plate 9, mounting plate 10 height, in order to guarantee the structural strength of limit plate 9, the lower end surface of limit plate 9 be equipped be in
The middle part of the reinforcing rib of well word, limit plate 9 is equipped with perforative via hole.The cross-sectional shape of the activity mo(u)ld bottom half core 5 and protection half
Ring cross-sectional shape is identical, is the semicircular arcs that 150mm, outer diameter are 250mm in internal diameter, and the lower end fixation of movable mo(u)ld bottom half core 5 is set
There is the first connecting lugs 5a, the first connecting lugs 5a to be equipped with connecting hole, movable mo(u)ld bottom half core 5 is supported on limit plate 9, and first connects
Via hole of the trunnion 5a on limit plate 9 is connect, the lower ending opening of the upper end edge type chamber seat 3 of movable mo(u)ld bottom half core 5 protrudes into through-hole 3a
Space between 80mm, through-hole 3a and movable 5 upper end of mo(u)ld bottom half core forms extrusion moulding chamber, depth 100mm.One ejection cylinder 12
It is mounted by means of bolts on mounting plate 10, the piston rod of ejection cylinder 12 extends upward vertically, passes through with movable mo(u)ld bottom half core 5
First connecting lugs 5a of limit plate 9 is hinged and connected, and ejection cylinder 12 is connect by oil circuit with hydraulic station.Four slide bars 7
Between be fixedly installed fixed plate 13, specifically, the miner diameter end of 7 upper end of each slide bar is each passed through the quadrangle of fixed plate 13, and spiral shell
Line attaching nut forms a fixed connection, and fixed plate 13 is fixedly mounted on to the upper end of four slide bars 7, in order to guarantee fixed plate 13
Structural strength, the upper surface of fixed plate 13 be equipped in well word reinforcing rib.One slide plate 14 is slidably fitted in four slide bars 7
On, between fixed plate 13, connecting plate 6, in the present embodiment, sliding sleeve, the slide plate are respectively equipped on the quadrangle of the slide plate 14
14 are slidably fitted between four slide bars 7 by sliding sleeve, and the middle part of 14 upper surface of slide plate is equipped with the second connecting lugs 14a, and second
Connecting lugs 14a is equipped with connecting hole.It is 250mm that the cross-sectional shape of the activity upper core 4, which is 150mm, outer diameter in internal diameter,
Semicircular arc, with protection semi-ring cross-sectional shape it is identical, activity upper core 4 is mounted by means of bolts on the lower end of slide plate 14
Face, and be aligned with the upper end opening of type chamber seat 3.Hydraulic cylinder 15 is mounted by means of bolts in fixed plate 13, hydraulic cylinder 15
Piston rod extends downwards, hinged with the second connecting lugs 14a of slide plate 14, and hydraulic cylinder 15 is connected by oil circuit and hydraulic station
It connects, driving activity upper core 4 is slided along the vertical direction.1.25kg extruding raw material fills the extrusion moulding chamber that depth degree is 100mm
Interior, control Driven by Hydraulic Cylinder activity upper core enters along the upper end opening of extrusion moulding chamber, is compacted extruding raw material, is cooled and shaped and is
It internal diameter 150mm, outer diameter 250mm, is highly the protection semi-ring of 50mm, control Driven by Hydraulic Cylinder activity upper core exits extrusion forming
Chamber, then control the piston cylinder driving activity mo(u)ld bottom half core of ejection cylinder and move up, molding protection semi-ring is released into extrusion forming
Chamber obtains protection semi-ring.Ejection cylinder retracts original position, is supported on movable mo(u)ld bottom half core on limit plate, is recycled operation, repeats to add
Work protects semi-ring.
Embodiment two
Manually salvage the carbon slag of floating on 320kA Bath liquid surface, carbon slag by 50wt% anode slime,
The electrolyte of 40wt%, the fluoride salt of 10wt% form, fluoride salt MgF2One pack system.After the carbon slag of salvaging is cooled to bulk,
By block-like carbon slag be added disintegrating machine in crush be for diameter 0.5-2.0mm particulate material.Particulate material, coal tar pitch are mixed
It is added in heating stirring machine, coal tar pitch is hard pitch, and coal tar pitch: particulate material mass ratio is 15:100, is heated to 95-100
1h is stirred and evenly mixed after melting coal tar pitch, obtains extruding raw material.
Adjustment is located at the stop nut of limit plate upper and lower sides, positioned at the stop nut of mounting plate upper and lower sides, until movable mo(u)ld bottom half
The depth that core protrudes into through-hole is 30mm, and the depth of extrusion moulding chamber is 150mm, locks stop nut.Take the extruding of 1.9kg former
Material, the extrusion forming that filling depth degree is 150mm is intracavitary, can the extrusion process protection semi-ring that height is 100mm out.
Embodiment three
Referring to Figure 15, by taking the two block protection semi-rings using embodiment one are mounted on anode steel claw as an example.Anode steel claw 16 is perpendicular
It is in line to put, the intrados of two block protection semi-rings 17 is tightly attached on anode steel claw periphery, ferrophosphorus ring and anode carbon body are located at
Binding site ties up the protection ring closed up circlewise with aluminium wire.The electrolyte block face of 350mm thickness is laid on protection ring upper surface
Material.After being packed into electrolytic cell, it is bonded between two block protection semi-rings after protecting the coal tar pitch in semi-ring to re-melt carbonization, by two pieces
Protection semi-ring bonding constitute internal diameter be 150mm, outer diameter 250mm, be highly 50mm complete preservation ring.Anode cycles consumed
First 30 days, protection ring was located at electrolyte levels or more, roasts at high temperature (about 400-600 DEG C), the coal tar pitch in semi-ring is protected to fill
Divide carbonization, at latter 3 days of anode cycles consumed, the electrolyte solution of high temperature washed away protection ring, consumed protection ring, the electricity in protection ring
Solution matter and fluoride are slowly released into electrolyte solution, and anode slime full combustion can effectively protect steel pawl.
Claims (7)
1. a kind of preparation method of electrolytic aluminum anodic steel claw protection semi-ring, which is characterized in that have follow steps:
1) the carbon slag on Bath liquid surface is salvaged, after being cooled to bulk, crush be for diameter 0.5-2.0mm
Grain raw material；
2) mix particulate material, coal tar pitch, coal tar pitch: particulate material mass ratio is 15:100, and being heated to 95-100 DEG C makes coal
It is stirred and evenly mixed after pitch melting, obtains extruding raw material；
3) extruding raw material is added in the type chamber of extrusion die, squeezes, is cooled and shaped, obtain the protection that cross section is semicircular arc
Semi-ring.
2. preparation method according to claim 1, it is characterised in that: the carbon slag in step 1) is residual by the anode of 50%wt
Slag, the electrolyte of 40wt%, 10wt% fluoride salt composition.
3. the preparation method of electrolytic aluminum anodic steel claw protection semi-ring according to claim 2, it is characterised in that: the fluorination
Salt is CaF2Or MgF2Or CaF2、MgF2Mixture.
4. the preparation method of electrolytic aluminum anodic steel claw protection semi-ring according to claim 1, it is characterised in that: in step 2)
Coal tar pitch be hard pitch.
5. the preparation method of electrolytic aluminum anodic steel claw protection semi-ring according to claim 1, it is characterised in that: in step 3)
The extrusion die includes mounting bracket, and the molding machine being arranged in mounting bracket, and the molding machine includes type chamber
Seat, activity upper core, movable mo(u)ld bottom half core, the type chamber seat are fixed in mounting bracket, are equipped in type chamber seat perforative logical up and down
The cross-sectional shape in hole, the through-hole is identical as protection semi-ring cross-sectional shape, the cross-sectional shape of the activity mo(u)ld bottom half core and guarantor
Shield semi-ring cross-sectional shape is identical, and movable mo(u)ld bottom half core is supported in mounting bracket, and adjustable, the upper end edge of movable mo(u)ld bottom half core of height
The lower ending opening of type chamber block hole protrudes into type chamber seat, and the space between movable mo(u)ld bottom half core and through-hole forms extrusion moulding chamber, institute
The cross-sectional shape for stating activity upper core is identical as protection semi-ring cross-sectional shape, and activity upper core is slided by Driven by Hydraulic Cylinder
In the extrusion moulding chamber of type chamber seat, combination constitutes extrusion die for cooperation.
6. the preparation method of electrolytic aluminum anodic steel claw protection semi-ring according to claim 5, it is characterised in that: the installation
It is fixed with a horizontal mounting plate on bracket, four slide bars extended upward vertically are fixed on the mounting plate, one is sliding
Plate is slidably fitted between four slide bars and is slided up and down by Driven by Hydraulic Cylinder, and the activity upper core is fixedly mounted on slide plate
Lower end surface on, and be aligned with the upper end opening of type chamber block hole.
7. the preparation method of electrolytic aluminum anodic steel claw protection semi-ring according to claim 5, it is characterised in that: the installation
It is fixed with four threaded rods extended downwards on bracket, is sliding combined with limit plate and installation on four threaded rods
Plate, limit plate are located between mounting plate, type chamber seat, are threadedly engaged four stop nuts, four limit spiral shells on each threaded rod respectively
Mother is sequentially located at the upper and lower sides of the upper and lower sides of limit plate, mounting plate, limits the height of limit plate, mounting plate, movable mo(u)ld bottom half core branch
It holds on limit plate, the lower ending opening of the upper end edge type chamber block hole of movable mo(u)ld bottom half core protrudes into type chamber seat, and an ejection cylinder is solid
Determine on a mounting board, the piston rod of the ejection cylinder extends through limit plate upward and connect with movable mo(u)ld bottom half core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820146.9A CN108972840B (en) | 2018-07-24 | 2018-07-24 | Method for preparing electrolytic aluminum anode steel claw protection semi-ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810820146.9A CN108972840B (en) | 2018-07-24 | 2018-07-24 | Method for preparing electrolytic aluminum anode steel claw protection semi-ring |
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| CN108972840B CN108972840B (en) | 2020-02-07 |
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| CN113199799A (en) * | 2021-05-20 | 2021-08-03 | 重庆镪正科技有限公司 | Carbon strip forming nozzle pressing mechanism and forming method of carbon sliding plate |
| CN113232125A (en) * | 2021-04-16 | 2021-08-10 | 广东电网能源发展有限公司 | Moulding apparatus |
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| CN113199799B (en) * | 2021-05-20 | 2023-06-16 | 重庆镪正科技有限公司 | Carbon strip forming and mouth pressing mechanism and forming method of carbon slide plate |
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