CN109055987A - A kind of method that aluminium cell seat pocket stops slot - Google Patents
A kind of method that aluminium cell seat pocket stops slot Download PDFInfo
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- CN109055987A CN109055987A CN201811241437.9A CN201811241437A CN109055987A CN 109055987 A CN109055987 A CN 109055987A CN 201811241437 A CN201811241437 A CN 201811241437A CN 109055987 A CN109055987 A CN 109055987A
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- slot
- aluminium cell
- stops
- seat pocket
- height
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The present invention discloses a kind of aluminium cell seat pocket and stops slot method, comprising the following steps: 1) confirmation needs to stop electrolytic bath number and the anode bus position of slot；2) stop that measurement liquid level of electrolyzer before slot is always high, regulating liquid surface total height is burner hearth effective height 63% hereinafter, being then carried out in two steps decompression, and voltage is dropped to 3.5-3.6v by the first step, and voltage is disposably down to by second step from 3.5-3.6v stops slot target voltage；3) the column screw rod at each column short-circuit opening is unclamped, insulation board is taken out, riser bus bar electrolysis carries out deashing processing；4) it is tightened up with stopping slot screw rod, the big riser bus bar pressure drop of measurement processing pressure drop, stops slot work after pressure drop is qualified and complete.Operation of the present invention is simple, safety, raising stop slot working efficiency stops slot technology, and the technical operation is convenient, and operates in the case where complete series electric current, does not influence the production of normal slot.
Description
Technical field
The present invention relates to the methods that technical field of electrolytic aluminum production, specially a kind of aluminium cell seat pocket stop slot.
Background technique
Guangxi Hua Lei new material Co., Ltd electrolytic aluminium factory is since on September 25th, 2017 go into operation, Hua Lei company electrolytic cell
Stop slot operation not have a power failure and stop using Guizhou two sets of light metal technological equipment Engineering Technical Research Centre Co., Ltd of innovation always
Slot device is powered and is stopped slot operation, and the process flow of the slot device that do not have a power failure work is as follows: 1. peripheral components are installed: being removed
Two short-circuit block insulated bolts above all columns, and following two short-circuit block insulation blanket studs is kept to be in relaxed state；Operation
Personnel are inserted into dedicated side and insert insulation board, take out original-pack insulation booth;Start-stop slot device is successively hung to station, operator's control by overhead traveling crane
Device handling posture processed makes locating wheel be close to the in place of the column back side, while guaranteeing in opening/closing lever U type mouth and short-circuit block；It will
The installation of short-circuit block push rod fixture is in place.2. zero load contactless test run: connecting each operating unit cable to control cabinet；Connection control
Cabinet power supply;Under the zero load contactless state of device, commutation switch and the movement of short-circuit opening machinery switching mechanism are tested, is acted errorless
It just can be carried out and install in next step afterwards.3. confirmation switch is in an off state down: operator pushes commutation switch that column is crimped copper
Plate compresses it on column close to riser bus bar, and with column bent clamp；By the soft upper top for touching short-circuit block with pressure connection terminal of copper
Clip hold-down is fixed with crimping in face；Install short-circuit block push rod ratchet, check and adjust the spacing between short-circuit block and column (1.5 ~
3.5cm).4. long-range closure switch group and short-circuit opening: after confirmation personnel withdraw, commander is closed commutation switch by control cabinet
Group；Operator extracts side out and inserts insulation board；Commander is closed short-circuit opening by control cabinet, and short-circuit block is made to switch to machinery pressure from opening
Tight state.5. short-circuit block bolt presses: operator is inserted into and tightens two short-circuit block steel bolts above, makes short-circuit block and column
Switch to double bolt presses from mechanical compaction；Short-circuit block push rod ratchet is removed, opening/closing lever is packed up；Operator is inserted into and tightens following
Two short-circuit block steel bolts, make short-circuit block and column switch to four bolt presses from double bolt presses.6. disconnecting switching group: confirmation people
After member withdraws, commander disconnects commutation switch group by control cabinet, and observer reviews and validate switch and disconnects.7. device is removed:
Short-circuit block push rod fixture, short-circuit block bent clamp, riser bus bar bent clamp are successively removed, is inserted into original-pack insulation booth, and successively
Device is hung, stops slot and finishes.
The technique stream of the slot device that do not have a power failure work operate it is comparatively laborious, each preparation be more than a hour with
On, need the skilled worker of special training that could operate, operation labor intensity is larger.
Summary of the invention
The present invention provides a kind of aluminium cell seat pocket and stops slot method, and this method is easy to operate, safety, raising stop slot work effect
Rate stops slot technology, and the technical operation is convenient, and operates in the case where complete series electric current, does not influence the production of normal slot.
Technical scheme is as follows:
The method that aluminium cell seat pocket of the invention stops slot, comprising the following steps:
1) confirmation needs to stop electrolytic bath number and the anode bus position of slot；
2) stop that measurement liquid level of electrolyzer before slot is always high, regulating liquid surface total height is burner hearth effective height 63% hereinafter, being then divided to two
Step is depressured, and voltage is dropped to 3.5-3.6v by the first step, and voltage is disposably down to by second step from 3.5-3.6v stops slot target
Voltage；
3) the column screw rod at each column short-circuit opening is unclamped, insulation board is taken out, riser bus bar electrolysis carries out deashing processing；
4) it is tightened up with stopping slot screw rod, the big riser bus bar pressure drop of measurement processing pressure drop, stops slot work after pressure drop is qualified and complete.
Further, cell liquid is divided into two layers in the step 2), and lower layer is molten aluminum, and upper layer is electrolyte solution, adjusts
When liquid surface total height, the height of molten aluminum and electrolyte solution is adjusted respectively, wherein adjusting aluminium level height is that burner hearth is effective
The 45% of height is hereinafter, adjust 18% or less electrolyte level is burner hearth effective height.
Further, in the step 3), the method for regulating liquid surface total height are as follows: extracted respectively from electrolytic cell by pumping
Molten aluminum and electrolyte solution.
Further, the aluminium cell is 500kA aluminium cell.
Further, the total high 60cm of the electrolytic cell burner hearth, wherein effective furnace height 58cm.
Further, regulating liquid surface total height is 35cm or less in the step 2).
Further, the height of molten aluminum is adjusted in the step 2) to 25cm hereinafter, adjust electrolyte level to 10cm with
Under.
Further, in the step 3), target voltage 1.0-1.3v.
Stopping slot short-circuit opening, there are also electric currents, and a small amount of sparking phenomenon occurs in Contact, has dressed personal protective equipment i.e.
Can, stop the time of slot operation probably at 10 minutes or so, integrated operation is safely controllable.
The operation principle of the present invention is that:
Since electrolytic series current loop is made of electrolytic cell in concatenated form, wherein 500kA electrolytic cell in Preliminary design
Voltage constitutes voltage=anode+interpolar+cathode+counter electromotive force+bath circumference bus+other (series of busbars, effect are shared equally), and seat pocket stops
Slot working principle is exactly to stop slot using the realization of separate unit electrolytic cell minor loop short path principle, both when electrolytic cell short circuit, voltage across poles,
Back-emf voltage and other (series of busbars, effect are shared equally) voltages have been not present, and realize that seat pocket stops slot；Concrete operations are according to power
3) article operation of sharp claim 1, point drop operating voltage is to stopping slot target voltage 1.0v(close to theoretical voltage 0.836v).
Tank voltage: V=0.359+1.410+0.247+1.650+0.230+0.025=3.921v
When seat pocket occurs for electrolytic cell: tank voltage=anode+cathode+bath circumference bus, both short-circuit tank voltage: V=0.359+0.247+
0.230=0.836v
Therefore, when short circuit occurs for anode and cathode, electrolytic cell main electrical current will be walked by anode to cathode conduction, be grasped at this time
Make riser bus bar short-circuit opening, to realize the slot operation that do not have a power failure.
The invention has the benefit that
The present invention is woth no need to any increase material, equipment, and easy to operate, at low cost, applicable large scale electrolytic cell stops slot operation, warp
Ji, environmental protection；At low cost, the operating time is short, mitigates the labor intensity of operator, improves working efficiency, and industrialization promotion has more
The meaning of reality.
Technical process of the invention is simple and easy, and design is reasonable, securely and reliably, in the current production equipment of no change
Under the premise of, original technological deficiency is overcome, can be operated in the case where complete series electric current, not influence the production of normal slot,
Remarkable in economical benefits.
Specific embodiment
Below by specific embodiment, the present invention is described in detail.
Embodiment 1
Aluminium cell seat pocket of the invention stops slot method, comprising the following steps:
1) confirmation needs to stop electrolytic bath number and the anode bus position of slot；
2) electrolytic cell described in is 500kA electrolytic cell, the total high 60cm of electrolytic cell burner hearth, wherein effective furnace height 58cm；Electrolysis
Tank liquor is divided into two layers, and lower layer is molten aluminum, and upper layer is electrolyte solution；Measurement liquid level of electrolyzer is always high before stopping slot, by pumping from electrolysis
Extract molten aluminum in slot respectively and electrolyte solution to carry out regulating liquid surface total height be burner hearth effective height is 33cm, wherein adjust molten aluminum
Height to 23cm, adjust electrolyte level to 10cm；Then it is carried out in two steps decompression, voltage is dropped to 3.5- by the first step
3.6v, voltage is disposably down to by second step from 3.5v stops slot target voltage 1.0v；
3) the column screw rod at each column short-circuit opening is unclamped, insulation board is taken out, riser bus bar electrolysis carries out deashing processing；
4) it is tightened up with stopping slot screw rod, the big riser bus bar pressure drop of measurement processing pressure drop, stops slot work after pressure drop is qualified and complete.
Performance analysis:
1, economic benefit
(1) after the method that aluminium cell seat pocket of the invention stops slot comes into operation, only need 10-12 people's operation that can complete to operate,
Part labour can be saved；And stop slot operation time probably at 10 minutes or so, than use not power-off device use the time 1 small
When shorten 50 minutes.
(2) after the method that aluminium cell seat pocket of the invention stops slot comes into operation, without purchasing not power-off device (400 again
Ten thousand/platform), power-off device does not need also usually spare parts purchasing and maintenance cost to pay, but aluminium cell seat pocket of the invention stops slot
Method do not have to be safeguarded, save maintenance cost, direct economic benefit is significant.
2, social benefit
After the method that aluminium cell seat pocket of the invention stops slot comes into operation, current domestic electrolytic cell is significantly changed
Stop trough pattern, it is easy to operate to stop slot, and a large amount of manpower and material resources are saved, the working efficiency that electrolytic cell stops slot is greatly improved,
It is such as promoted to aluminum electrolysis industry, social benefit is significant.
3, environmental benefit
What material is the method that aluminium cell seat pocket of the invention stops slot do not need, easy to operate, safe and efficient；Meanwhile this skill
Polluter and pernicious gas are not generated in art use, environmental-protection function is obvious, and prospect of the application is extensive.
Claims (8)
1. a kind of method that aluminium cell seat pocket stops slot, which comprises the following steps:
1) confirmation needs to stop electrolytic bath number and the anode bus position of slot；
2) stop that measurement liquid level of electrolyzer before slot is always high, regulating liquid surface total height is burner hearth effective height 63% hereinafter, being then divided to two
Step is depressured, and voltage is dropped to 3.5-3.6v by the first step, and voltage is disposably down to by second step from 3.5-3.6v stops slot target
Voltage；
3) the column screw rod at each column short-circuit opening is unclamped, insulation board is taken out, riser bus bar electrolysis carries out deashing processing；
4) it is tightened up with stopping slot screw rod, the big riser bus bar pressure drop of measurement processing pressure drop, stops slot work after pressure drop is qualified and complete.
2. the method that aluminium cell seat pocket according to claim 1 stops slot, it is characterised in that: electrolysis in the step 2)
Tank liquor is divided into two layers, and lower layer is molten aluminum, and upper layer is electrolyte solution, when regulating liquid surface total height, respectively to molten aluminum and electrolyte solution
Height be adjusted, wherein adjust aluminium level height be burner hearth effective height 45% hereinafter, adjust electrolyte level be burner hearth
18% or less effective height.
3. the method that aluminium cell seat pocket according to claim 2 stops slot, it is characterised in that: in the step 2), adjust
The method for saving liquid surface total height are as follows: molten aluminum and electrolyte solution are extracted by pump respectively from electrolytic cell.
4. the method that aluminium cell seat pocket according to claim 2 stops slot, it is characterised in that: the aluminium cell is
500kA aluminium cell.
5. the method that aluminium cell seat pocket according to claim 4 stops slot, it is characterised in that: the electrolytic cell burner hearth is total
High 60cm, wherein effective furnace height 58cm.
6. the method that aluminium cell seat pocket according to claim 5 stops slot, it is characterised in that: adjusted in the step 2)
Liquid surface total height is 35cm or less.
7. the method that aluminium cell seat pocket according to claim 5 stops slot, it is characterised in that: adjusted in the step 2)
The height of molten aluminum is to 25cm hereinafter, adjusting electrolyte level to 10cm or less.
8. the method that aluminium cell seat pocket according to claim 1 stops slot, it is characterised in that: in the step 3), mesh
Mark voltage is 1.0-1.3v.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811241437.9A CN109055987B (en) | 2018-10-24 | 2018-10-24 | Method for sitting and stopping aluminum electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811241437.9A CN109055987B (en) | 2018-10-24 | 2018-10-24 | Method for sitting and stopping aluminum electrolytic cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109055987A true CN109055987A (en) | 2018-12-21 |
| CN109055987B CN109055987B (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811241437.9A Active CN109055987B (en) | 2018-10-24 | 2018-10-24 | Method for sitting and stopping aluminum electrolytic cell |
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| Country | Link |
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| CN (1) | CN109055987B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592617A (en) * | 2019-08-29 | 2019-12-20 | 青海物产工业投资有限公司 | Secondary starting method for full-series power failure of aluminum electrolysis cell |
| CN113755893A (en) * | 2021-09-15 | 2021-12-07 | 内蒙古锦联铝材有限公司 | Processing method for coping with long-time large-amplitude load reduction of aluminum electrolysis series |
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| JPS5698491A (en) * | 1980-01-08 | 1981-08-07 | Mitsubishi Keikinzoku Kogyo Kk | Operating method of aluminum electrolytic cell |
| CN1772958A (en) * | 2004-11-11 | 2006-05-17 | 梁学民 | Apparatus and method for aluminium electrolysing series uninterruption Stop (opening) electrolytic tank |
| CN201334531Y (en) * | 2008-12-02 | 2009-10-28 | 北方工业大学 | Novel potline stop-start shunting device and system |
| CN104514029A (en) * | 2013-09-30 | 2015-04-15 | 林州市林丰铝电有限责任公司 | Large-scale electrolytic tank outage-free shutting method |
| CN104862741A (en) * | 2015-06-05 | 2015-08-26 | 青海百河铝业有限责任公司 | Method for stopping a cell under situation of no power-off of aluminum electrolytic cell |
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| JPS5698491A (en) * | 1980-01-08 | 1981-08-07 | Mitsubishi Keikinzoku Kogyo Kk | Operating method of aluminum electrolytic cell |
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| CN201334531Y (en) * | 2008-12-02 | 2009-10-28 | 北方工业大学 | Novel potline stop-start shunting device and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592617A (en) * | 2019-08-29 | 2019-12-20 | 青海物产工业投资有限公司 | Secondary starting method for full-series power failure of aluminum electrolysis cell |
| CN110592617B (en) * | 2019-08-29 | 2021-06-15 | 青海物产工业投资有限公司 | Secondary starting method for full-series power failure of aluminum electrolysis cell |
| CN113755893A (en) * | 2021-09-15 | 2021-12-07 | 内蒙古锦联铝材有限公司 | Processing method for coping with long-time large-amplitude load reduction of aluminum electrolysis series |
| CN113755893B (en) * | 2021-09-15 | 2024-04-30 | 内蒙古锦联铝材有限公司 | Processing method for dealing with long-time large-amplitude load reduction of aluminum electrolysis series |
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| Publication number | Publication date |
|---|---|
| CN109055987B (en) | 2020-10-27 |
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