CN100371501C - Guide type titanium boride coating layer cathode aluminium electrolytic bath - Google Patents
Guide type titanium boride coating layer cathode aluminium electrolytic bath Download PDFInfo
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- CN100371501C CN100371501C CNB200410023392XA CN200410023392A CN100371501C CN 100371501 C CN100371501 C CN 100371501C CN B200410023392X A CNB200410023392X A CN B200410023392XA CN 200410023392 A CN200410023392 A CN 200410023392A CN 100371501 C CN100371501 C CN 100371501C
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- ditch
- aluminium
- collecting groove
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Abstract
The present invention relates to an aluminum electrolytic cell in the field of metallurgy, particularly to a guide type titanium boride coating layer cathode aluminum electrolytic bath. The present invention is characterized in that the present invention adopts a ditching method that a central longitudinal polyaluminium ditch b, a periphery polyaluminium ditch a and a middle transverse connecting ditch c are mutually combined; the central longitudinal polyaluminium ditch b and the transverse connecting ditch c are rectangular cross sections, and the periphery ditch a is made into a trapezoidal cross section by combined with an artificial stretching leg 5; the active volume of the present invention can accommodate the amount of electrolyzing aluminum liquid for 12 to 24 hours. The present invention is particularly suitable for carrying out the guide type aluminum electrolytic bath reformation for existing conventional prebaked anode intermediate point type blanking aluminum electrolytic baths, the unit yield of the electrolytic baths is increased by 20 to 50%, electric consumption of ton aluminum is reduced below 12500 kWh, and production cost is decreased by over 20%.
Description
Technical field:
The present invention relates to the aluminium cell of field of metallurgy, particularly a kind of guide flow type titanium boride coating cathode aluminium electrolytic cell.
Background technology:
Need to consume a large amount of electric energy in electrolysis production, 1 ton of aluminium of every electrolysis production needs power consumption 15000kWh approximately, accounts for about 1/3rd of production cost.Therefore research and develop the high energy efficiency aluminium cell, be the important topic of electrolysis of aluminum industry always.
Summary of the invention:
The objective of the invention is conventional pre-baked anode cell is implemented to transform, propose a kind of guide flow type titanium boride coating cathode aluminium electrolytic cell.The aluminium cell transformation amount of this structure is little, need not the negative electrode of existing aluminium cell and anode conducting system, aluminum oxide conveying and charging system, fume exhaust system, pot shell structure etc. are transformed, can effectively solve the diffusion problem of groove inner anode gas purging and aluminum oxide, and under the condition of effective usable floor area that does not influence electrolyzer or structural strength, enough aluminium liquid storage spaces are arranged and can ensure the unobstructed of aluminium liquid discharging, improve the electrolyzer unit output, reduce ton aluminium power consumption.
Technical scheme of the present invention is:
1. central longitudinal laterally is connected the trench digging mode that ditch c combines to aluminium collecting groove b, peripheral aluminium collecting groove a with the middle part; Central longitudinal is rectangular cross-section to aluminium collecting groove b with laterally being connected ditch c, and perimeter ditch a 5 makes trapezoidal cross-section in conjunction with artificial stretching one's legs; Central longitudinal can be held 12 to 24 hours electrolytic aluminum liquid measure to aluminium collecting groove b, peripheral aluminium collecting groove a useful volume;
2. cathode surface is made the identical gradient by the big face tilt in groove mediad both sides with the anode bottom, and gradient size is 2.5 ° to 10 °;
3. the central aluminium collecting groove b of blanking point below goes up the shelves material cover plate 13 identical with cathode material is set in the middle of;
4. cathode surface lays TiB
2Composite coating, thickness 1mm to 3mm;
5. electrolyzer side lower part and bottom are close to pot shell 12 the thick calcium silicate board with microporous of 30mm 11 are set, and cathode carbon pieces adopts fire-resistant anti-bleeds 9 10 times;
6. all the other structures of guide flow type electrolyzer constitute all identical with the middle blanking aluminium cell of conventional prebaked anode with material;
7. the main technologic parameters scope of guide flow type electrolyzer: anodic current density is 0.8 to 1.2A/cm
2, electrolysis temperature 920 to 940 ℃ of (electrolyte superheat degree 15 is to 20C), anode carbon block upper surface aluminum oxide cover thicknesss 150 to 200mm, work pole span be about 2.5 to 3.5cm;
The advantage and the positively effect of invention:
1. the present invention is particularly suitable for point feeding aluminium cell in the middle of the existing conventional prebaked anode is implemented the transformation of guide flow type aluminium cell.
2. the novel guide flow type aluminum cell structure of Ti Chuing is few to the transformation amount of existing aluminium cell, and its negative electrode and anode conducting system, aluminum oxide conveying and charging system, fume exhaust system, pot shell structure etc. need not to transform.
3. central longitudinal can not influence the effective usable floor area and the structural strength of electrolyzer to decoration form and the useful volume size of aluminium collecting groove b and peripheral aluminium collecting groove a, and has ensured unobstructed and enough aluminium liquid storage spaces of aluminium liquid discharging.
4. cathode surface lays TiB
2Composite coating, the aluminium liquid anticathode surface good wet that electrolysis is generated.
5. the fire-resistant and insulation construction of electrolyzer and the design of material help reducing the cell body heat lost by radiation, keep the normal heat balance of diversion trench and strengthen the ability that it resists thermal perturbation.
6. the guide flow type aluminum electrolytic tank parameter condition of Ti Chuing, by reducing the work pole span, reduce bath voltage, improve anodic current density, reduce measures such as electrolysis temperature, can ensure the normal operation of electrolyzer, compare with the conventional pre-baked anode cell of identical scale, the electrolyzer unit output improves 20 to 50%, and ton aluminium power consumption is reduced to below the 12500kWh, and production cost reduces more than 20%.
Description of drawings:
Fig. 1: guide flow type aluminium cell cell body 1/4 part-structure longitudinal sectional drawing
The 1-alumina powder; 2-aluminum oxide crust; The 3-anode
4 sidewall carbon bricks; 5-is artificial to stretch one's legs; 6-refractory brick;
The 7-insulating brick; The 8-cathode steel bar; The fire-resistant anti-bleed of 9-;
10-negative electrode 11-calcium silicate board with microporous; The 12-pot shell
13-backgauge cover plate 14-refractory concrete;
A-periphery aluminium collecting groove; B-central authorities aluminium collecting groove; The c-middle part laterally connects ditch.
The A-A of Fig. 2: Fig. 1, i.e. transverse sectional view;
The B-B sectional view of Fig. 3: Fig. 2;
The C-C sectional view of Fig. 4: Fig. 3.
Embodiment:
Be that the point feeding aluminium cell is that example is illustrated in the middle of the prebaked anode of 140kA to 160kA now with potline current intensity.This type of electrolyzer is generally 20 to 24 groups of anodes, divide two row to be arranged in parallel, middle blanking point is four, negative electrode 10 is 13 to 14 groups, and big machined surface 300 is to 350mm, and the end machined surface is 400 to 450mm, anode 3 is of a size of 1450 * 660 * 540mm, work pole span 4.5 is to 5.5cm, and about bath voltage 4.2V, ionogen and aluminium liquid height respectively have 18 usually to 22cm in the groove.
When adopting the art of this patent that existing electrolyzer is implemented overhauling reform, factory building is arranged, negative busbar, the anode conducting system of upper slot and aluminum oxide are carried, charging system, fume exhaust systems etc. all can remain unchanged, only need to make anode 3 and negative electrode 10 into desired abnormally-structured (gradient size is 2.5 ° to 10 °), and on negative electrode 10, leave corresponding central longitudinal to aluminium collecting groove b, laterally connect ditch C and peripheral aluminium collecting groove a, the shelves flitch 13 identical with cathode material is set on the central aluminium collecting groove b below the blanking point, electrolyzer side lower part and bottom are close to pot shell 12 the thick calcium silicate board with microporous of 30mm 11 are set, negative electrode adopts fire-resistant anti-bleed 9 10 times, lays the TiB of 1mm to 3mm at cathode surface
2Composite coating, and adopt the flue gas roasting technology that the overhaul groove is carried out roasting and starting.
The main technologic parameters scope of electrolyzer: anodic current density is 0.8 to 1.2A/cm
2, electrolysis temperature 920 to 940 ℃ of (15 to 20 ℃ of electrolyte superheat degrees), anode carbon block upper surface aluminum oxide cover thickness 150～200mm, work pole span be about 2.5 to 3.5cm, bath voltage 3.0 is to 4.0V, ionogen height 18 is to 22cm, and the anode below does not have tangible aluminium liquid layer substantially.
Claims (1)
1. guide flow type titanium boride coating cathode aluminium electrolytic cell is characterized in that:
1. central longitudinal laterally is connected the trench digging mode that ditch (c) combines to aluminium collecting groove (b), peripheral aluminium collecting groove (a) and middle part; Central longitudinal is rectangular cross-section to aluminium collecting groove (b) with laterally being connected ditch (c), and perimeter ditch (a) is made trapezoidal cross-section in conjunction with artificial stretching one's legs (5); Central longitudinal can be held 12 to 24 hours electrolytic aluminum liquid measure to aluminium collecting groove (b), peripheral aluminium collecting groove (a) useful volume;
2. cathode surface is made the identical gradient by the big face tilt in groove mediad both sides with the anode bottom, and gradient size is 2.5 ° to 10 °;
3. the central aluminium collecting groove (b) of blanking point below is gone up the backgauge cover plate (13) identical with cathode material is set in the middle of;
4. cathode surface lays TiB
2Composite coating, thickness 1mm to 3mm;
5. electrolyzer side lower part and bottom are close to pot shell (12) the thick calcium silicate board with microporous of 30mm (11) are set, and negative electrode (10) adopts fire-resistant anti-bleed (9) down;
6. all the other structures of guide flow type electrolyzer constitute all identical with the middle blanking aluminium cell of conventional prebaked anode with material;
7. the main technologic parameters scope of guide flow type electrolyzer: anodic current density is 0.8 to 1.2A/cm
2, 920 to 940 ℃ of electrolysis temperatures, 15 to 20 ℃ of electrolyte superheat degrees, anode carbon block upper surface aluminum oxide cover thickness 150 to 200mm, work pole span are 2.5 to 3.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410023392XA CN100371501C (en) | 2004-07-06 | 2004-07-06 | Guide type titanium boride coating layer cathode aluminium electrolytic bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410023392XA CN100371501C (en) | 2004-07-06 | 2004-07-06 | Guide type titanium boride coating layer cathode aluminium electrolytic bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1718866A CN1718866A (en) | 2006-01-11 |
| CN100371501C true CN100371501C (en) | 2008-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410023392XA Expired - Fee Related CN100371501C (en) | 2004-07-06 | 2004-07-06 | Guide type titanium boride coating layer cathode aluminium electrolytic bath |
Country Status (1)
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SA08290057B1 (en) * | 2007-02-13 | 2012-10-01 | تشينا الومنيوم انترناشونال انجنيرينج كوربوريشن ليمتد | An Aluminium Electrolytic Cell |
| CN100478500C (en) | 2007-03-02 | 2009-04-15 | 冯乃祥 | Abnormal cathode carbon block structure aluminum electrolysis bath |
| CN101805912B (en) * | 2009-02-17 | 2013-06-12 | 贵阳铝镁设计研究院有限公司 | Cathode of aluminum electrolysis cell |
| CN102022938B (en) * | 2011-01-07 | 2012-02-29 | 长沙理工大学 | Heat pipe based guide type aluminium electrolysis cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2079618U (en) * | 1990-01-11 | 1991-06-26 | 东北工学院 | Al cell with tib anode construction |
| US5651874A (en) * | 1993-05-28 | 1997-07-29 | Moltech Invent S.A. | Method for production of aluminum utilizing protected carbon-containing components |
| US6093304A (en) * | 1994-09-08 | 2000-07-25 | Moltech Invent S.A. | Cell for aluminium electrowinning |
| US20030010628A1 (en) * | 1999-10-26 | 2003-01-16 | Vittorio De Nora | Low temperature operating cell for the electrowinning of aluminium |
| US6692620B2 (en) * | 2002-04-27 | 2004-02-17 | Moltech Invent S.A. | Aluminium electrowinning cell with sidewalls resistant to molten electrolyte |
-
2004
- 2004-07-06 CN CNB200410023392XA patent/CN100371501C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2079618U (en) * | 1990-01-11 | 1991-06-26 | 东北工学院 | Al cell with tib anode construction |
| US5651874A (en) * | 1993-05-28 | 1997-07-29 | Moltech Invent S.A. | Method for production of aluminum utilizing protected carbon-containing components |
| US6093304A (en) * | 1994-09-08 | 2000-07-25 | Moltech Invent S.A. | Cell for aluminium electrowinning |
| US20030010628A1 (en) * | 1999-10-26 | 2003-01-16 | Vittorio De Nora | Low temperature operating cell for the electrowinning of aluminium |
| US6692620B2 (en) * | 2002-04-27 | 2004-02-17 | Moltech Invent S.A. | Aluminium electrowinning cell with sidewalls resistant to molten electrolyte |
Non-Patent Citations (2)
| Title |
|---|
| 导流型铝电解槽技术进展与应用基础研究. 周乃君，李劼，姜昌伟，梅炽.轻金属，第9期. 2000 * |
| 采用惰性阳极和可润湿型阴极的新型铝电解槽. 李劼，李相鹏，赖延清，刘业翔.轻金属，第8期. 2002 * |
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| CN1718866A (en) | 2006-01-11 |
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