CN106591884A - Negative pole structure of aluminum electrolytic trough - Google Patents
Negative pole structure of aluminum electrolytic trough Download PDFInfo
- Publication number
- CN106591884A CN106591884A CN201710032662.0A CN201710032662A CN106591884A CN 106591884 A CN106591884 A CN 106591884A CN 201710032662 A CN201710032662 A CN 201710032662A CN 106591884 A CN106591884 A CN 106591884A
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- Prior art keywords
- negative pole
- aluminum
- aluminium
- negative electrode
- bar
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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
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
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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 invention provides a negative pole structure of an aluminum electrolytic trough and belongs to the field of aluminum electrolysis technologies. The negative pole structure of the aluminum electrolytic trough comprises a negative pole area, an electrolytic tank lining lateral part and a heat preservation furnace bottom. The negative pole area is composed of an aluminum liquid layer, a negative pole aluminum bar and negative pole carbon blocks inside the through. In the aluminum electrolysis process, the negative pole aluminum bar serves as an electric conduction connector to connect busbars and the negative pole of the aluminum liquid layer to conduct aluminum electrolysis. Cooling circulating pipelines are embedded inside the negative pole aluminum bar, and the negative pole aluminum bar is used through combination with a trough controlling on-line monitoring system. The working condition of the negative pole aluminum bar is monitored in real-time by the trough controlling on-line monitoring system, cooling circulating water pressure and flow are adjusted in real-time, and the upper surface temperature of the negative pole aluminum bar is controlled below 600 DEG C. According to the negative pole structure of the aluminum electrolytic trough, the aluminum liquid negative pole has the advantages that the life of the electrolytic trough is greatly prolonged; the pressure drop of the furnace bottom of the electrolytic trough is reduced by 280 mv or above; the furnace bottom structure is optimized; and the heat preservation furnace bottom is arranged so as to reduce the heat dissipation loss of the furnace bottom of the electrolytic trough.
Description
Technical field
The present invention relates to technical field of aluminum electrolysis, more particularly to a kind of cathode structure of aluminium cell.
Background technology
At present aluminium electrolytic industry is still using from cryolite-alumina molten-salt electrolytic aluminum method (Hall Heroult process).Anode
Anode carbon block group is constituted by aluminum guide, steel pawl and carbon block, negative electrode is made up of aluminium liquid, cathode steel bar and carbon block.This causes aluminium electroloysis
Industry comes with some shortcomings, first, electrolytic bath short life, and although negative electrode is not consumed in aluminium electrolysis process, in high temperature, by force
Acted on by chemical attack and thermal stress under magnetic field, high current, strong corrosive environment, cell lining can be seriously damaged and compel
Make to stop groove overhaul.
Cathode carbon pieces usage cycles at present in domestic industry aluminium cell it is good in 4-5, some cathode carbon pieces but make
With, electrolytic bath short life just damaged less than a year.Stopping groove overhaul can consume substantial amounts of human and material resources, and yield declines, economical
Loss is larger, and waste and old cathode liner recovery and utilization technology is also immature, there is problem of environmental pollution.Secondly, hearth and bottom
Height, a hearth and bottom part is the pressure drop produced on cathode material, and a part is deposited on cathode surface in production process
The pressure drop that precipitation crust is produced, used as connection bus and the conductor of carbon block, carbon steel contact drop is high, rod iron pressure drop for cathode steel bar
Height, increased the power consumption of aluminium electroloysis.Finally, the capacity usage ratio of current aluminium cell is only 47%, has half energy all to waste
Fall, wherein electric tank cathode area radiation loss accounts for the 22% of total losses, and domestic big-and-middle-sized aluminium electroloysis mechanism cathodic region radiating is damaged
Lose typically in 0.85V-1.05V or so, mean value is in 0.9V or so, and electrolytic cell heat loss is big.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cathode structure of aluminium cell, makes up the deficiencies in the prior art,
The advantages of with prolongation bath life, reduction cathode drop, reduction heat loss.
The present invention is employed the following technical solutions：
A kind of cathode structure of aluminium cell, including cathodic region, cell lining sidepiece and holding furnace bottom；The cathodic region by
Aluminium liquid layer, negative electrode aluminium bar, cathode carbon pieces composition in groove, aluminium liquid layer, negative electrode aluminium bar, cathode carbon pieces are arranged from top to bottom in the groove
Row.
Further, the negative electrode aluminium bar is used as conduction connector connection bus and aluminium liquid layer negative electrode, negative electrode aluminium bar and bus
Connected using compression bonding method.
Further, the negative electrode aluminium bar is embedded with cooling circulating line, the cooling circulating line by snap joint with
External slot control on-line monitoring system connection.
Further, the groove control on-line monitoring system includes thermoreceptor and chilled(cooling) water supply (CWS) system, and groove control exists
Line monitoring system real-time monitoring negative electrode aluminium bar working condition.
Further, the cell lining sidepiece is made up of bottom paste and high-strength antiseepage castable.
The present invention is also improved electrolytic cell furnace bottom, and using insulation bottom construction, the holding furnace bottom is by superpower guarantor
Warm Impervious Materials, vermiculite insulating brick, silicic acid cover plate composition.
The invention has the beneficial effects as follows：Aluminium liquid layer is laid on negative electrode aluminium bar in electrolytic process in groove, instead of tradition
The carbon cathode blocks being assembled into one by cathode steel bar and carbon block.Because negative electrode aluminium bar is embedded with cooling circulating line, with groove
Control on-line monitoring system is used cooperatively, and controls on-line monitoring system real-time monitoring negative electrode aluminium bar working condition by groove, real
When adjust cooling circulating water pressure and flow, by negative electrode aluminium bar upper surface temperature control below 600 DEG C, it can be ensured that negative electrode aluminium bar
Never it is melted.The present invention solves traditional electrolyte groove cathode carbon pieces and liner destruction, and cathode steel bar fusing connects without conductive
Joint is forced the problem for stopping groove overhaul, and the cathode construction of the present invention substantially prolongs bath life.
The present invention has overturned traditional aluminium electrolytic cell cathode, using electric conductivity is better than the negative electrode aluminium bar of rod iron and changes
Conventional cathode carbon block size and position, by cathode drop by original aluminium liquid pressure drop, aluminium liquid-furnace bottom contact drop, cathode carbon pieces
Pressure drop, cathode carbon pieces-cathode steel bar contact drop, cathode steel bar pressure drop are optimized for aluminium liquid pressure drop, cathode carbon pieces pressure drop, negative electrode charcoal
Block-negative electrode aluminium bar contact drop, negative electrode aluminium bar pressure drop, reduce more than the hearth and bottom 280mv of aluminium cell.
Description of the drawings
Fig. 1 is a kind of cathode structure of aluminium cell vertical section schematic diagram of the present invention
In figure：1 cathode carbon pieces；2 snap joints；3 negative electrode aluminium bars；4 cooling circulating lines；5 aluminium liquid layers；6 electrolyte；7 is positive
Pole carbon block；8 buses；Paste at 9 bottoms；10 high-strength antiseepage castables；11 Superstrong heat-preserving Impervious Materials；12 vermiculite insulating bricks；13 silicic acid cover plates
Specific embodiment
As shown in figure 1, cathode structure of aluminium cell, including cathodic region, cell lining sidepiece and holding furnace bottom, cathodic region
It is made up of aluminium liquid layer 5, negative electrode aluminium bar 3, cathode carbon pieces 1 in groove, aluminium liquid layer 5, negative electrode aluminium bar 3, cathode carbon pieces 1 are from upper in the groove
And lower arrangement.
Negative electrode aluminium bar 3 is adopted with bus 8 and crimped as conduction connector connection bus 8 and aluminium liquid layer negative electrode, negative electrode aluminium bar 3
Method connects.
Negative electrode aluminium bar 3 is embedded with cooling circulating line 4, and the cooling circulating line 4 is by snap joint 2 and external slot control
On-line monitoring system connection processed.
Groove control on-line monitoring system includes thermoreceptor and chilled(cooling) water supply (CWS) system, the real-time prison of groove control on-line monitoring
Survey the working condition of negative electrode aluminium bar 3.
Cell lining sidepiece is made up of bottom paste 9 and high-strength antiseepage castable 10.
, using insulation bottom construction, the holding furnace bottom is by Superstrong heat-preserving Impervious Materials 11, vermiculite insulating brick for electrolytic cell furnace bottom
12nd, silicic acid cover plate 13 is constituted.
Operationally, aluminium liquid layer 5 is laid on negative electrode aluminium bar 3 present invention in electrolytic process in groove, instead of traditional
The carbon cathode blocks being assembled into one by cathode steel bar and carbon block.Being had using negative electrode aluminium bar reduces pressure drop, reduces the excellent of energy consumption
Point.
Simultaneously in order to ensure negative electrode aluminium bar is never melted in electrolytic process, by negative electrode aluminium bar and the online prison of groove control
Examining system is connected.When negative electrode aluminium bar temperature is too high, chilled(cooling) water supply (CWS) system is delivered a signal in real time by thermoreceptor, it is cold
But recirculated water automatic water pressure adjustment and flow, negative electrode aluminium bar upper surface temperature is controlled all the time below 600 DEG C.
The electrolysis cathode area that the present invention is provided also can use cooperatively with existing electrolytic cell, and need not change existing electrolysis
The dimensional structure of groove.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of cathode structure of aluminium cell, including cathodic region, cell lining sidepiece and holding furnace bottom, it is characterised in that institute
State cathodic region to be made up of aluminium liquid layer, negative electrode aluminium bar, cathode carbon pieces in groove, in the groove aluminium liquid layer, negative electrode aluminium bar, cathode carbon pieces from
Upper and lower arrangement.
2. a kind of cathode structure of aluminium cell according to claim 1, it is characterised in that the negative electrode aluminium bar is used as conduction
Connector connects bus and aluminium liquid layer negative electrode, and negative electrode aluminium bar is connected with bus using compression bonding method.
3. a kind of cathode structure of aluminium cell according to claim 2, it is characterised in that the negative electrode aluminium bar is embedded with cold
But circulating line, the cooling circulating line is connected by snap joint with external slot control on-line monitoring system.
4. a kind of cathode structure of aluminium cell according to claim 3, it is characterised in that the groove control on-line monitoring system
System includes thermoreceptor and chilled(cooling) water supply (CWS) system.
5. a kind of cathode structure of aluminium cell according to any one of claim 1-4, it is characterised in that in the electrolytic cell
Lining sidepiece is made up of bottom paste and high-strength antiseepage castable.
6. a kind of cathode structure of aluminium cell according to any one of claim 1-4, it is characterised in that the holding furnace bottom
It is made up of Superstrong heat-preserving Impervious Materials, vermiculite insulating brick, silicic acid cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710032662.0A CN106591884A (en) | 2017-01-16 | 2017-01-16 | Negative pole structure of aluminum electrolytic trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710032662.0A CN106591884A (en) | 2017-01-16 | 2017-01-16 | Negative pole structure of aluminum electrolytic trough |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106591884A true CN106591884A (en) | 2017-04-26 |
Family
ID=58585779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710032662.0A Pending CN106591884A (en) | 2017-01-16 | 2017-01-16 | Negative pole structure of aluminum electrolytic trough |
Country Status (1)
| Country | Link |
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| CN (1) | CN106591884A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981455A1 (en) * | 1981-01-14 | 1982-12-15 | Красноярский Ордена Трудового Красного Знамени Институт Цветных Металлов Им.М.И.Калинина | Cathode of electrolyzer for refining aluminium |
| CN101368281A (en) * | 2008-09-27 | 2009-02-18 | 东北大学 | Method for aluminum lithium alloy preparation by fused salt electrolysis process |
| CN104562088A (en) * | 2015-01-20 | 2015-04-29 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode conductive rod and preparation method thereof |
| CN104630827A (en) * | 2014-12-29 | 2015-05-20 | 陕西银仕达信息科技有限公司 | Cathode aluminum bar for electrolytic aluminum |
| CN204491005U (en) * | 2015-01-20 | 2015-07-22 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode collector bar |
| CN204752871U (en) * | 2015-05-29 | 2015-11-11 | 陕西银仕达信息科技有限公司 | A automated control system for control cooling medium |
-
2017
- 2017-01-16 CN CN201710032662.0A patent/CN106591884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU981455A1 (en) * | 1981-01-14 | 1982-12-15 | Красноярский Ордена Трудового Красного Знамени Институт Цветных Металлов Им.М.И.Калинина | Cathode of electrolyzer for refining aluminium |
| CN101368281A (en) * | 2008-09-27 | 2009-02-18 | 东北大学 | Method for aluminum lithium alloy preparation by fused salt electrolysis process |
| CN104630827A (en) * | 2014-12-29 | 2015-05-20 | 陕西银仕达信息科技有限公司 | Cathode aluminum bar for electrolytic aluminum |
| CN104562088A (en) * | 2015-01-20 | 2015-04-29 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode conductive rod and preparation method thereof |
| CN204491005U (en) * | 2015-01-20 | 2015-07-22 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode collector bar |
| CN204752871U (en) * | 2015-05-29 | 2015-11-11 | 陕西银仕达信息科技有限公司 | A automated control system for control cooling medium |
Non-Patent Citations (2)
| Title |
|---|
| 姚鸿博 等: "《电解铝生产实践》", 30 June 1984 * |
| 魏庆斌: "铝铜合金阴极的铝电解研究", 《东北工业学院学报》 * |
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Application publication date: 20170426 |
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