CN104775135A - Electrolysis bath alumina discharge control method - Google Patents
Electrolysis bath alumina discharge control method Download PDFInfo
- Publication number
- CN104775135A CN104775135A CN201410014685.5A CN201410014685A CN104775135A CN 104775135 A CN104775135 A CN 104775135A CN 201410014685 A CN201410014685 A CN 201410014685A CN 104775135 A CN104775135 A CN 104775135A
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- CN
- China
- Prior art keywords
- material discharge
- housing
- beating
- breaking
- crust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C25C3/20—Automatic control or regulation of cells
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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
- C25C3/14—Devices for feeding or crust breaking
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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 an electrolysis bath alumina discharge control method. According to the method, 6 groups of beating devices (1) and the gas cylinders on material discharge devices (2) are connected with 3 electromagnetic valves (3) respectively through a compressed air pipeline network (4), and the electromagnetic valve (3) controls the beating device (1) connected with the electromagnetic valve so as to achieve the two-device alternating material discharge, wherein the housing beating material discharge points 1 and 4, the housing beating material discharge points 2 and 5, and the housing beating material discharge points 3 and 6 are respectively controlled, or the housing beating material discharge points 1 and 6, the housing beating material discharge points 2 and 5, and the housing beating material discharge points 3 and 4 are respectively controlled, or the housing beating material discharge points 1 and 3, the housing beating material discharge points 2 and 4, and the housing beating material discharge points 5 and 6 are respectively controlled. According to the present invention, the three-device alternating material discharge in the traditional electrolysis bath alumina housing beating material discharge control technology is changed into the two-device alternating material discharge, such that the alumina is easily dissolved in the relatively high stability electrolysis bath so as to reduce the generation of the alumina precipitation and reduce the electric energy consumption.
Description
Technical field
The present invention relates to a kind of control method of electrolyzer alumina blanking.
Background technology
Modern aluminum industry is produced, and mainly take sodium aluminum fluoride-alumina molten salt electrolysis method to produce electrolytic aluminum, the raw material of that is electrolysis is aluminum oxide.Specific implementation process is: the equipment of electrolysis is electrolyzer, electrolyzer is configured with multiple alumina blanking point, each blanking point is configured with 1 and hits tup, aluminum oxide is added into blanking point by the blanking device be arranged in hopper, finally enter in electrolyzer fused solution and carry out electrolysis production, thus electrolysis goes out metal aluminium liquid.In whole implementation process, first aluminum oxide is rapid solution, is then slow dissolving.Slow dissolving is caused by condensing electrolyte effect.
Along with the development of aluminum i ndustry, cell capacity continues to increase, and therefore the length and width of electrolyzer also continue to increase thereupon, and the bath of cell minute surface namely maximized is larger.Simultaneously, in order to better deepen " energy-saving and emission-reduction " thought, reduce power consumption, current most electrolyzer all have employed the design of higher stability, and this kind of design is to reduce metal wave, reduce pole span, but also reduce the mobility of aluminium liquid simultaneously, finally cause electrolyte flow to reduce, thus, the aluminum oxide velocity of diffusion dropped in electrolyzer molten mass can reduce, thus produces condensation effects.
Current large prebaked cell for aluminum-reduction alumina feeding control techniques generally adopts the constant-volume blanking device 6 of 1.8L, three or three staggered blanking, i.e. blankings 5.4 kilograms.Because discharge quantity is larger, electrolyzer (particularly adopts special-shaped cathode and reduces horizontal current technology) after have employed the design of higher stability, reduce the mobility of aluminium liquid, finally cause electrolyte flow to reduce and easily in electrolyzer, produce precipitation, thus worsen the distribution of current of bath of cell, add the energy expenditure of electrolyzer.
Summary of the invention
The object of the invention is to: provide one can use in the design of electrolyzer high stability, the electrolyzer alumina blanking control method that can use on Large Copacity electrolyzer again, the electrolyte flow existed to overcome prior art reduces easily generation precipitation in electrolyzer, thus worsen the distribution of current of bath of cell, increase the deficiencies such as the energy expenditure of electrolyzer.
The present invention is formed like this: 6 groups of percussion devices are connected with 3 magnetic valves respectively by compressed air pipe network with the cylinder on blanking device, the percussion device be attached thereto by solenoid control realizes two or two staggered blankings, namely crust-breaking & baiting point 1 and 4, crust-breaking & baiting point 2 and 5, crust-breaking & baiting point 3 and 6 is controlled respectively, or control crust-breaking & baiting point 1 and 6, crust-breaking & baiting point 2 and 5, crust-breaking & baiting point 3 and 4 respectively, or control crust-breaking & baiting point 1 and 3, crust-breaking & baiting point 2 and 4, crust-breaking & baiting point 5 and 6 respectively.
The present invention is by traditional large scale electrolytic cell aluminum oxide crust-breaking & baiting control techniques, three or three staggered blankings change two or two staggered blankings into, namely alumina feeding adopts the constant-volume blanking device 6 of 1.8L, two or two staggered blankings, an i.e. blanking 3.6 kilograms thus decrease the discharge quantity of each blanking, aluminum oxide is easier to dissolve in the electrolyzer of higher stability, reduces the generation of precipitation of alumina, reduces the consumption of electric energy.
Accompanying drawing explanation
Fig. 1 is traditional electrolyte groove alumina blanking point control method schematic diagram;
Fig. 2 is electrolyzer alumina blanking point control method schematic diagram of the present invention.
Embodiment
Embodiments of the invention: the present invention is made up of percussion device 1, blanking device 2, magnetic valve 3, compressed air pipe network 4 etc., by compressed air pipe network 4 by 3 magnetic valves 3 with connect with the cylinders on 6 groups of percussion devices 1, blanking device 2 respectively, the percussion device 1 controlling to be attached thereto eventually through magnetic valve 3 realizes running, thus realizes two or two staggered blankings.
Range of application: as providing one can use in the design of electrolyzer high stability on the electrolyzer that this invention can be used in differing capacities, the control method of the electrolyzer alumina blanking that can use on Large Copacity electrolyzer again.The particular location of percussion device 1, blanking device 2, magnetic valve 3, compressed air pipe network 4 can adjust, and combination adjustment can be carried out, as (1-4 according to practical situation in two or two reference mark interlocked, 2-5,3-6 control), (1-6,2-5,3-4 controls), (1-3,2-4,5-6 control) etc.
Claims (1)
1. an electrolyzer alumina blanking control method, it is characterized in that: 6 groups of percussion devices (1) are connected with 3 magnetic valves (3) respectively by compressed air pipe network (4) with the cylinder on blanking device (2), the percussion device (1) controlling to be attached thereto by magnetic valve (3) realizes two or two staggered blankings, namely crust-breaking & baiting point 1 and 4 is controlled respectively, crust-breaking & baiting point 2 and 5, crust-breaking & baiting point 3 and 6, or control crust-breaking & baiting point 1 and 6 respectively, crust-breaking & baiting point 2 and 5, crust-breaking & baiting point 3 and 4, or control crust-breaking & baiting point 1 and 3 respectively, crust-breaking & baiting point 2 and 4, crust-breaking & baiting point 5 and 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014685.5A CN104775135A (en) | 2014-01-14 | 2014-01-14 | Electrolysis bath alumina discharge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014685.5A CN104775135A (en) | 2014-01-14 | 2014-01-14 | Electrolysis bath alumina discharge control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104775135A true CN104775135A (en) | 2015-07-15 |
Family
ID=53616892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410014685.5A Pending CN104775135A (en) | 2014-01-14 | 2014-01-14 | Electrolysis bath alumina discharge control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149006A (en) * | 2016-08-28 | 2016-11-23 | 包头铝业有限公司 | A kind of aluminum cell crust breaking, the control method of blanking system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001006039A1 (en) * | 1999-07-19 | 2001-01-25 | Ab Rexroth Mecman | Method and device for controlling the movement of a supply and breaking chisel in an aluminium production cell |
| CN1661136A (en) * | 2004-12-22 | 2005-08-31 | 沈阳铝镁设计研究院 | Crust breaking and loading control system for aluminum cell and control method |
| CN200964441Y (en) * | 2006-05-24 | 2007-10-24 | 中国铝业股份有限公司 | Prebaked aluminum cell cross crust breaking baiting device |
| CN201137605Y (en) * | 2007-12-03 | 2008-10-22 | 西部矿业股份有限公司 | Air cylinder |
-
2014
- 2014-01-14 CN CN201410014685.5A patent/CN104775135A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001006039A1 (en) * | 1999-07-19 | 2001-01-25 | Ab Rexroth Mecman | Method and device for controlling the movement of a supply and breaking chisel in an aluminium production cell |
| CN1661136A (en) * | 2004-12-22 | 2005-08-31 | 沈阳铝镁设计研究院 | Crust breaking and loading control system for aluminum cell and control method |
| CN200964441Y (en) * | 2006-05-24 | 2007-10-24 | 中国铝业股份有限公司 | Prebaked aluminum cell cross crust breaking baiting device |
| CN201137605Y (en) * | 2007-12-03 | 2008-10-22 | 西部矿业股份有限公司 | Air cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149006A (en) * | 2016-08-28 | 2016-11-23 | 包头铝业有限公司 | A kind of aluminum cell crust breaking, the control method of blanking system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |
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| WD01 | Invention patent application deemed withdrawn after publication |