CN104674305A - Live pouring repair method of electrolytic cell busbar - Google Patents
Live pouring repair method of electrolytic cell busbar Download PDFInfo
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- CN104674305A CN104674305A CN201510075034.1A CN201510075034A CN104674305A CN 104674305 A CN104674305 A CN 104674305A CN 201510075034 A CN201510075034 A CN 201510075034A CN 104674305 A CN104674305 A CN 104674305A
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- pouring
- busbar
- aluminium liquid
- bus
- casting moulds
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/16—Electric current supply devices, e.g. bus bars
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a live pouring repair method of an electrolytic cell busbar. The live pouring repair method comprises the following steps: firstly, fabricating a pouring die according to the size of an impact failure busbar, polishing the impact failure busbar and heating the portion to be poured; next, fixing the pouring die in the position of the impact failure busbar; sealing slots on the four sides of the pouring die by use of yellow mud; baking; scooping out aluminum liquid from the cell and pouring into the pouring die; finally, taking down the pouring die when the aluminum liquid is about to be solidified, and clearing surface burrs and polishing the surface. According to the live pouring repair method of the electrolytic cell busbar, live pouring repair is adopted, the operation is simple, different pouring dies are fabricated according to the size of the damaged part of the busbar, and as the pressure drop and the temperature of the pouring joint after pouring are basically the same as those of a normal busbar, the influence of power failure and limited power on a series of electrolytic cell is reduced and the economic loss is effectively reduced. The repair problem of high welding difficulty due to a relatively small impact failure busbar range caused by accidents such as leakage is effectively solved. Due to aluminum liquid-aluminum busbar pouring, various pressure drop values after pouring are basically accordant with the values of the original busbar and the normal production conditions can be satisfied.
Description
Technical field
The present invention relates to electrolysis of aluminum process field, the particularly charged cast repairing technique application of a kind of 400KA electrolyzer bus.
Background technology
The electrolyzer put into production, by initial design, in earlier stage brickwork starting material, brickwork quality, roasting and starting, the factors such as normal production management, have impact on the run channel life-span, though emphasis maintenance management postmenstruation is also difficult to reach the requirement in age of design groove, easily there is the serious conditions such as early damage or runout, once after generation runout, leak source excessive causing washes out bath circumference bus, when carrying out large repairs, it is large that the bath circumference bus washed out welds difficulty under the impact of upfield, as carried out serial load down or series power failure welding, normal production electrolyzer impact is larger, unfavorable to serial stably manufactured, series electrolyzer runs in a series arrangement, separate unit groove stops in groove overhaul process, and bath circumference bus is in load carrying, when electric current is by bus, produce higher magnetic field, as repair by welding carries out screen fraud without better external device to magnetic field, welder, in welding process, not easily forms welding arc, welding fluid splashes everywhere by magnetic force, cause rosin joint, sealing-off situation more, affect by working space, not easily welding operation, therefore method series can only being taked to fall electric current or power failure is welded, and series falls electric current or after having a power failure, normal electrolyzer of producing now is a greater impact, and cause serial electrolyzer to be produced unstable, frequent load down is also larger on electrical network, rectifier unit impact.
Therefore a kind of repairing that just can realize electrolyzer bus that do not need to stop to ration the power supply is needed.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide the charged cast method for repairing and mending of a kind of electrolyzer bus.
The object of the present invention is achieved like this:
The charged cast method for repairing and mending of a kind of electrolyzer bus provided by the invention, comprises the following steps:
S1: make casting moulds according to washing out bus bar sizes;
S2: polish to washing out bus place surrounding;
S3: use grilled gun to heat to cast place and toast intensification;
S4: after baking, casting moulds is fixed on and washes out bus position;
S5: with yellow mud in casting moulds surrounding shutoff gap;
S6: re-use grilled gun after shutoff and burning injection molding and yellow mud are carried out to baking and allow moisture content volatilize fast;
S7: after burning injection molding has toasted, aluminum steel or aluminium bar have been fixed in the breach washing out bus and are used for skeletal support;
S8: aluminium liquid is scooped out in groove with ionogen spoon;
S9: the rear end of holding ionogen spoon, slowly pours into aluminium liquid in casting moulds;
S10: pour aluminium liquid height in casting moulds hydraucone position;
S11: whether have aluminium liquid ooze out, if oozed out without aluminium liquid, then enter step S13 if observing casting moulds surrounding after casting complete;
S12: ooze out if any aluminium liquid, then blow cooling or spent material heap lid, then carry out next step;
S13: casting moulds takes off after reaching setting time by aluminium liquid, carries out surface spikes cleaning and polishing.
Further, the temperature of the baking of heating in described step S3 is 400-500 degree.
Further, the length of described step S4 casting moulds 2-3cm longer than fracture surrounding length.
Further, the aluminium liquid scooped out in described step S8 is poured in another ionogen spoon, pours temperature of aluminum liquid into and controls about 700-800 degree.
Further, in described step S13, the aluminium liquid slow solidification time is 24-26h.
Beneficial effect of the present invention is: the present invention adopts charged cast to repair, simple to operate, the size impaired according to bus, make different casting molds, pour into a mould rear pressure drop, poured joint temperature is substantially identical with normal bus, reduce and stop the impact that serial electrolyzer is brought of rationing the power supply, effectively reduce financial loss.Efficiently solve because of accidents such as bakies that to cause thrusting bus ranges less, the repairing difficult problem that welding difficulty is large.By aluminium liquid-aluminium busbar cast, the rear every voltage drop value of cast is conformed to substantially with former bus value substantially, meet normal production conditions.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
The electrolyzer bus charged cast method for repairing and mending schema that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
Embodiment 1
The electrolyzer bus charged cast method for repairing and mending schema that Fig. 1 provides for the embodiment of the present invention, as shown in the figure: the charged cast method for repairing and mending of a kind of electrolyzer bus provided by the invention, comprises the following steps:
S1: make casting moulds according to washing out bus bar sizes;
S2: polish to washing out bus place surrounding;
S3: use grilled gun to heat to cast place and toast intensification;
S4: after baking, casting moulds is fixed on and washes out bus position;
S5: with yellow mud in casting moulds surrounding shutoff gap;
S6: re-use grilled gun after shutoff and burning injection molding and yellow mud are carried out to baking and allow moisture content volatilize fast;
S7: after burning injection molding has toasted, aluminum steel or aluminium bar have been fixed in the breach washing out bus and are used for skeletal support;
S8: aluminium liquid is scooped out in groove with ionogen spoon;
S9: the rear end of holding ionogen spoon, slowly pours into aluminium liquid in casting moulds;
S10: pour aluminium liquid height in casting moulds hydraucone position;
S11: whether have aluminium liquid ooze out, if oozed out without aluminium liquid, then enter step S13 if observing casting moulds surrounding after casting complete;
S12: ooze out if any aluminium liquid, then blow cooling or spent material heap lid, then carry out next step;
S13: casting moulds takes off after reaching setting time by aluminium liquid, carries out surface spikes cleaning and polishing.
The temperature of the baking of heating in described step S3 is 400-500 degree.
The length 2-3cm longer than fracture surrounding length of described step S4 casting moulds.
The aluminium liquid scooped out in described step S8 is poured in another ionogen spoon, pours temperature of aluminum liquid into and controls about 700-800 degree.
In described step S13, the aluminium liquid slow solidification time is 24-26h.
Embodiment 2
The difference of the present embodiment and embodiment 1 is only:
The charged cast practical application of bus: 420KA aluminium cell affects by early damage, occurs leak accident, because leak source is excessive, causes high temperature aluminum liquid to wash out bath circumference bus, for ensureing serial electrolyzer stably manufactured, adopts charged cast bus to repair;
Cast prepares and pouring operation: Work tool prepares: ionogen spoon 3 handle, gloves, face shield, casting moulds (making according to washing out bus bar sizes), aluminum steel or aluminium bar (3-5 root), thermopair, temperature measuring gauge, yellow mud.
First polishing to washing out bus place surrounding, using grilled gun to heat baking to cast place, being warming up to 400-500 degree, to ensure that in casting process, high temperature aluminum liquid can not splash because of local overcooling.Be fixed on by casting moulds after baking and wash out bus position, casting moulds must be greater than fracture surrounding 2-3cm, then uses yellow mud in the shutoff of casting moulds surrounding, for prevention aluminium liquid flows out from surrounding gap.Re-use grilled gun after shutoff burning injection molding and yellow mud are carried out to baking and allow moisture content volatilize rapidly; After burning injection molding has toasted, aluminum steel or aluminium bar are fixed in the breach washing out bus and are used for skeletal support, operator use ionogen spoon to be scooped out in groove by aluminium liquid, and (the aluminium liquid scooped out is poured in another ionogen spoon, reduce impurity in liquid aluminium, accelerate the cooling of aluminium liquid, pour temperature of aluminum liquid into control about 700-800 degree) under two people coordinate, hold the rear end of ionogen spoon, aluminium liquid is slowly poured in casting moulds, pours aluminium liquid height in casting moulds hydraucone position.
Check after cast and measure: whether observe casting moulds surrounding after casting complete has aluminium liquid to ooze out, blowing cooling or spent material heap lid in time as aluminium liquid oozes out, prevent aluminium liquid to be connected with pot shell, bath circumference bus, ground connection risk occurs; Check without aluminising phenomenon, allow after aluminium liquid slow solidification and treat that casting moulds takes off by 24h, carry out surface spikes cleaning and polish;
Repair efficiency: measure cast place pressure drop and temperature, contrast former bath circumference bus difference, as following table:
| 1020 | First point | Second point | Thirdly | Normal point |
| Temperature (DEG C) | 74 | 84 | 68 | 68 |
| Pressure drop (mv) | 2.8 | 0.09 | 2.9 | 1.6 |
Can be found out by take off data, after repairing, temperature is roughly the same with former bath circumference bus temperature, and just voltage drop value is a little more than about 1mv, and the pressure drop lower aluminium liquid purity mainly due to cast use in mid-way is higher, more than 70 aluminium;
The economic benefit that placingJi Shu produces:
As adopted the method for welding, weld after load down, its welding pressure drop is not estimated, after electric current falls in series, primary aluminum output reduces, electrolyzer is frequent generating effect easily, causes the larger entire effect to electrolyzer of energy loss as follows: (to disregard electrical network, electric current is down to 160KA, on average rise 0.3 by effect coefficient, effect voltage 25 volts, Effect time 3 minutes, welded for 2 hours) loss that causes to series:
400KA hourly output: 0.3355*2*400*296*0.93/1000=73.88t;
After potline current is down to 160KA, electrolyzer is heated and takes in inadequate situation, and cannot carry out electrochemical reaction, electrolyzer can only be in keeping warm mode;
Ultimate production financial loss: 73.88*14050=103.8 ten thousand yuan;
The electricity that during liter electric current, effect coefficient rising increases:
400* (25-4) * 3*296*0.3/60=37296 degree;
The electricity charge loss that effect causes: 12432*0.4=1.518 ten thousand yuan;
Auxiliary material loss during extinguishing effect (effect rod): 296*0.3*3 (root) * 7=0.186 ten thousand yuan;
Series is saved loss and is amounted to: 103.8+1.518+0.186=105.504 ten thousand yuan;
The charged cast repairing technique of bus in sum, efficiently solve because of accidents such as bakies that to cause thrusting bus ranges less, the repairing difficult problem that welding difficulty is large, directly reduces simultaneously and stops the financial loss brought of rationing the power supply, have better dissemination for my company 420KA aluminum cell bus-bar repairing technique.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope that the present invention limits.
Claims (5)
1. the charged cast method for repairing and mending of electrolyzer bus, is characterized in that: comprise the following steps:
S1: make casting moulds according to washing out bus bar sizes;
S2: polish to washing out bus place surrounding;
S3: use grilled gun to heat to cast place and toast intensification;
S4: after baking, casting moulds is fixed on and washes out bus position;
S5: with yellow mud in casting moulds surrounding shutoff gap;
S6: re-use grilled gun after shutoff and burning injection molding and yellow mud are toasted;
S7: after burning injection molding has toasted, aluminum steel or aluminium bar have been fixed in the breach washing out bus and are used for skeletal support;
S8: aluminium liquid is scooped out in groove with ionogen spoon;
S9: aluminium liquid is slowly poured in casting moulds;
S10: pour aluminium liquid height at casting moulds hydraucone predeterminated position;
S11: whether have aluminium liquid ooze out, if oozed out without aluminium liquid, then enter step S13 if observing casting moulds surrounding after casting complete;
S12: ooze out if any aluminium liquid, then blow cooling or spent material heap lid, then carry out next step;
S13: casting moulds takes off after reaching setting time by aluminium liquid, carries out surface spikes cleaning and polishing.
2. the charged cast method for repairing and mending of electrolyzer bus according to claim 1, is characterized in that: the temperature of the baking of heating in described step S3 is 400-500 degree.
3. the charged cast method for repairing and mending of electrolyzer bus according to claim 1, is characterized in that: the length 2-3cm longer than fracture surrounding length of described step S4 casting moulds.
4. the charged cast method for repairing and mending of electrolyzer bus according to claim 1, is characterized in that: the aluminium liquid scooped out in described step S8 is poured in another ionogen spoon, pours temperature of aluminum liquid into and controls about 700-800 degree.
5. the charged cast method for repairing and mending of electrolyzer bus according to claim 1, is characterized in that: in described step S13, the aluminium liquid slow solidification time is 24-26h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075034.1A CN104674305A (en) | 2015-02-12 | 2015-02-12 | Live pouring repair method of electrolytic cell busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075034.1A CN104674305A (en) | 2015-02-12 | 2015-02-12 | Live pouring repair method of electrolytic cell busbar |
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| Publication Number | Publication Date |
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| CN104674305A true CN104674305A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510075034.1A Pending CN104674305A (en) | 2015-02-12 | 2015-02-12 | Live pouring repair method of electrolytic cell busbar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063663A (en) * | 2015-08-07 | 2015-11-18 | 广西百色银海铝业有限责任公司 | Fusion casting connection method of fused peripheral bus bar of aluminum electrolysis bath |
| CN114540883A (en) * | 2022-03-18 | 2022-05-27 | 十一冶建设集团有限责任公司 | Pouring method for cathode aluminum soft belt of electrolytic cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034211Y (en) * | 2007-03-23 | 2008-03-12 | 上海超高工程塑料有限公司 | Extent connecting piece for combined type cable bridge |
| CN203578728U (en) * | 2013-09-18 | 2014-05-07 | 登封电厂集团铝合金有限公司 | Device for repairing aluminum busbar of cathode of electrolytic cell |
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2015
- 2015-02-12 CN CN201510075034.1A patent/CN104674305A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034211Y (en) * | 2007-03-23 | 2008-03-12 | 上海超高工程塑料有限公司 | Extent connecting piece for combined type cable bridge |
| CN203578728U (en) * | 2013-09-18 | 2014-05-07 | 登封电厂集团铝合金有限公司 | Device for repairing aluminum busbar of cathode of electrolytic cell |
Non-Patent Citations (1)
| Title |
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| 谢军: "铝液浇铸法修复大型预焙电解槽的熔断阴极母线", 《广西轻工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063663A (en) * | 2015-08-07 | 2015-11-18 | 广西百色银海铝业有限责任公司 | Fusion casting connection method of fused peripheral bus bar of aluminum electrolysis bath |
| CN114540883A (en) * | 2022-03-18 | 2022-05-27 | 十一冶建设集团有限责任公司 | Pouring method for cathode aluminum soft belt of electrolytic cell |
| CN114540883B (en) * | 2022-03-18 | 2024-05-28 | 十一冶建设集团有限责任公司 | Casting method for cathode aluminum soft belt of electrolytic tank |
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Application publication date: 20150603 |