CN102041523A - Aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and roasting method thereof - Google Patents
Aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and roasting method thereof Download PDFInfo
- Publication number
- CN102041523A CN102041523A CN2009103085689A CN200910308568A CN102041523A CN 102041523 A CN102041523 A CN 102041523A CN 2009103085689 A CN2009103085689 A CN 2009103085689A CN 200910308568 A CN200910308568 A CN 200910308568A CN 102041523 A CN102041523 A CN 102041523A
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- Prior art keywords
- anode
- roasting
- shaped cathode
- graphite powder
- negative electrode
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000571 coke Substances 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 5
- 230000007547 defect Effects 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 238000001354 calcination Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Images
Classifications
-
- 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
- C25C3/12—Anodes
-
- 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
Abstract
The invention discloses an aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and a roasting method thereof. The structure is characterized in that: a grooved anode (1) is provided with a groove (6), cathode lug bosses (2) of a special-shaped cathode (5) are embedded into the groove (6) of the grooved anode (1), the cathode lug bosses (2) are provided with graphite powder (3), and the cathode surface between the cathode lug bosses (2) is provided with coke granules (4). The roasting method comprises the following steps of: 1, measuring the grooved depth of the grooved anode (1); 2, paving the coke granules (4) on the cathode surface between the cathode lug bosses (2), paving the graphite powder (3) of the cathode lug bosses, hanging an anode once the coke granules and the graphite powder at an anode position are paved, and then paving the coke granules and the graphite powder of the next anode; repeating the first and second steps, and completely hanging the anodes in turn; and 3, roasting, wherein the roasting mode is as same as the conventional common coke granule roasting technology. The method overcomes the defects of the prior art, and has good roasting effect.
Description
Technical field
The present invention relates to a kind of electrolysis of aluminum specially-shaped cathode anode electrolytic cell structure and roasting method thereof, belong to technical field of aluminum electrolysis.
Background technology
Industry specially-shaped cathode aluminum electrolytic tank roasting method is extremely important, tradition specially-shaped cathode calcination adopts three kinds of molten aluminum roasting, combustion gas roasting and baking coke particles, molten aluminum roasting is to irritate the aluminium liquid that advances to be higher than negative electrode boss 7～8cm in electrolyzer earlier, electrical roasting then, aluminium liquid infilters easily artificially stretches one's legs and pricks in the shrinkage joint that solid seam produces, and causes the electrolyzer aluminising to stop groove; The combustion gas roasting need be bought the special-purpose calciner of a cover, and expense surpasses 1,000,000 yuan, and domestic technique is also not really ripe; The specially-shaped cathode baking coke particles, owing to do not use the fluting anode, the burnt grain amount very big (about 3 tons) of laying, and the fishing job amount of breeze is very big in the start-up course, and breeze enlarges markedly in the possibility that the anode bottom forms the breeze cake.The present invention is exactly a kind of anode grooving at the characteristics development of specially-shaped cathode electrolyzer, in order to coupling specially-shaped cathode calcination technology, make it to realize baking coke particles, can overcome the defective that other roasting method exists, and roasting effect is fine, to prolonging cell life great role is arranged.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure and roasting method thereof are provided, infilter easily and artificially stretch one's legs and prick in the shrinkage joint that solid seam produces and cause the electrolyzer aluminising to stop groove to overcome aluminium liquid that prior art exists, the burnt grain amount of laying is big wait not enough.
Electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure of the present invention is: have groove on anode, the negative electrode boss of specially-shaped cathode is embedded in the fluting anodic groove, on the negative electrode boss Graphite Powder 99 is arranged, and the cathode surface between the negative electrode boss has burnt grain.
Electrolysis of aluminum specially-shaped cathode electrolyzer fluting anode roasting method of the present invention may further comprise the steps: the first, measure fluting anodic groove depth; The second, the cathode surface between the negative electrode boss is spread burnt grain earlier, lays Graphite Powder 99 again on the negative electrode boss, and every shop intact a burnt grain and a Graphite Powder 99 corresponding to anode position are hung an anode, and then laid the burnt grain and the Graphite Powder 99 of next piece negative electrode; Repeat first, second step, hung all anodes successively; The 3rd, carry out roasting, the roasting mode is identical with the common baking coke particles technology of prior art.
The laying depth of Graphite Powder 99 is 5-30mm, and its preferred version is 10mm.
The laying depth of burnt grain is 5-30mm, and its preferred version is 30mm.
The present invention compared with prior art, its advantage is: with the molten aluminum roasting method relatively, overcome aluminium liquid and infiltered easily and artificially stretch one's legs and pricks in the shrinkage joint of solid seam generation, cause the electrolyzer aluminising to stop the risk of groove; Compare with the combustion gas roasting method, reduce and buy combustion gas roasting isolated plant, save more than 100 ten thousand yuan of costs, cell room do not install gas pipeline also need need a very big construction cost as reinstalling, adopt the can combustion gas, in the cell room hot environment, can bring very big potential safety hazard; Compare with the common method for baking coke particles of specially-shaped cathode, the burnt grain amount very big (about 2 ~ 3 tons) that common baking coke particles is laid, and the fishing job amount of breeze is very big in the start-up course, breeze enlarges markedly in the possibility that the anode bottom forms the breeze cake, the final-period management of electrolyzer is brought very big harm, and specially-shaped cathode fluting method for baking coke particles can solve the problem that exists in the above-mentioned roasting method well, simple and practical, easy to operate, and roasting effect is fine, to prolonging cell life great role is arranged.
Description of drawings
Fig. 1 is specially-shaped cathode electrolyzer fluting anode of the present invention and cathode construction synoptic diagram, i.e. way of contact synoptic diagram between anode and the negative electrode;
Fig. 2～Fig. 8 is a slotted male electrode structure synoptic diagram, i.e. the corresponding different anodic slotting position synoptic diagram of negative electrode;
Wherein, have 2 grooves among Fig. 2, be of a size of 8 * 8 (cm), 8 * 19 (cm);
Have 2 grooves among Fig. 3, be of a size of 8 * 17 (cm), 8 * 16 (cm);
Have 1 groove among Fig. 4, be of a size of 8 * 19 (cm);
Have 1 groove among Fig. 5, be of a size of 8 * 19 (cm);
Have 2 grooves among Fig. 6, be of a size of 8 * 7 (cm), 8 * 19 (cm);
Have 2 grooves among Fig. 7, be of a size of 8 * 20 (cm), 8 * 13 (cm);
Have 1 groove among Fig. 8,8 * 19 (cm).
Embodiment
Embodiments of the invention: with the 200KA electrolyzer is example (28 groups of fluting anodes), the present invention includes following content:
Use the anode grooving technology: according to the specially-shaped cathode size, determine fluting anodic position and size, because between negative electrode and the anode is not one-to-one relationship, therefore different positions anodic fluting position is different, but electrolyzer has symmetry, and symmetric position anode grooving position is the same with size, 28 groups of anodes of 200KA electrolyzer, consider its symmetry, need 7 groups of different fluting anodes (to see Fig. 2～Fig. 8).
As shown in Figure 1, electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure is: have groove 6 on anode 1, the negative electrode boss 2 of specially-shaped cathode 5 is embedded in the groove 6 of fluting anode 1, and Graphite Powder 99 3 is arranged on negative electrode boss 2, and the cathode surface between negative electrode boss 2 has burnt grain 4.Used fluting anodic specially-shaped cathode roasting structure in this structure: use fluting anode 1, negative electrode boss 2 just in time is embedded in the groove 6 that anode 1 opens, and this has created condition for using baking coke particles.For guaranteeing anode 1 and negative electrode boss 2 flexible contacts, on the negative electrode boss, lay the thick Graphite Powder 99 3 of 10mm, the thickness of burnt like this grain 4 is 30mm, can guarantee that like this anode 1 contacts well with specially-shaped cathode 5.
The roasting method of electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure is as follows:
The first, measure earlier the degree of depth of the groove 6 of fluting anode 1, as error less (in 0.5cm), can be according to the burnt grain of normal laying, bigger as error, should adjust the laying depth of burnt grain;
The thick burnt grain 4 of 30mm is spread on negative electrode 5 surfaces between negative electrode boss 2 earlier, repaves the Graphite Powder 99 3 on the negative electrode boss 2, and its thickness is 10mm; Every shop a burnt grain 4 and a Graphite Powder 99 3 corresponding to the fluting anode position, hang a fluting anode 1, and check whether the fluting anode contacts well with negative electrode, as contact bad, take to handle, perhaps readjust the thickness of burnt grain, repave the burnt grain and the Graphite Powder 99 of next piece negative electrode then toward the method for the burnt grain of fluting anode bottom plug, repeat above step like this, hung all anodes successively.
The 3rd, carry out roasting, its roasting mode is identical with existing common baking coke particles technology.
Claims (6)
1. electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure, it is characterized in that: on anode (1), have groove (6), the negative electrode boss (2) of specially-shaped cathode (5) is embedded in the groove (6) of fluting anode (1), Graphite Powder 99 (3) is arranged on negative electrode boss (2), and the cathode surface between negative electrode boss (2) has burnt grain (4).
2. the roasting method of an electrolysis of aluminum specially-shaped cathode electrolyzer slotted male electrode structure as claimed in claim 1, it is characterized in that: it may further comprise the steps: the first, measure groove (6) degree of depth of fluting anode (1); Second, cathode surface between negative electrode boss (2) is spread burnt grain (4) earlier, lays Graphite Powder 99 (3) again on the negative electrode boss, every shop intact a burnt grain and a Graphite Powder 99 corresponding to anode position, hang an anode, and then lay the burnt grain and the Graphite Powder 99 of next piece negative electrode; Repeat first, second step, hung all anodes successively; The 3rd, carry out roasting, the roasting mode is identical with common baking coke particles technology.
3. electrolysis of aluminum specially-shaped cathode electrolyzer fluting anode roasting method according to claim 2, it is characterized in that: the laying depth of Graphite Powder 99 (3) is 5-30mm.
4. electrolysis of aluminum specially-shaped cathode electrolyzer fluting anode roasting method according to claim 3, it is characterized in that: the laying depth of Graphite Powder 99 (3) is 10mm.
5. electrolysis of aluminum specially-shaped cathode electrolyzer fluting anode roasting method according to claim 2, it is characterized in that: the laying depth of burnt grain (4) is 5-30mm.
6. electrolysis of aluminum specially-shaped cathode electrolyzer fluting anode roasting method according to claim 5, it is characterized in that: the laying depth of burnt grain (4) is 30mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910308568A CN102041523B (en) | 2009-10-21 | 2009-10-21 | Aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and roasting method thereof |
| PCT/CN2009/075927 WO2011047516A1 (en) | 2009-10-21 | 2009-12-24 | Grooved anode structure corresponding to irregular cathode in aluminum electrolytic cell, aluminum electrolytic cell and baking method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910308568A CN102041523B (en) | 2009-10-21 | 2009-10-21 | Aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and roasting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102041523A true CN102041523A (en) | 2011-05-04 |
| CN102041523B CN102041523B (en) | 2012-10-03 |
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| CN200910308568A Active CN102041523B (en) | 2009-10-21 | 2009-10-21 | Aluminum electrolysis special-shaped cathode electrolytic bath grooved anode structure and roasting method thereof |
Country Status (2)
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| CN (1) | CN102041523B (en) |
| WO (1) | WO2011047516A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079829A (en) * | 2019-04-28 | 2019-08-02 | 镇江慧诚新材料科技有限公司 | A kind of char particle packaged type baking start-up method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392272B (en) * | 2011-11-29 | 2014-02-05 | 东北大学 | Aluminium electrolyzer cathode structure capable of reducing voltage and improving current distribution |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338785B1 (en) * | 1997-10-17 | 2002-01-15 | Moltech Invent S.A. | Start-up of aluminum electrowinning cells |
| CN1085745C (en) * | 1999-09-24 | 2002-05-29 | 平果铝业公司 | Coke grain roast starting method for aluminium electrolyzer with pre-roasted anode |
| US6692620B2 (en) * | 2002-04-27 | 2004-02-17 | Moltech Invent S.A. | Aluminium electrowinning cell with sidewalls resistant to molten electrolyte |
| CN1308492C (en) * | 2004-05-14 | 2007-04-04 | 中国铝业股份有限公司 | Aluminum electrolytic tank calcining method |
| EP1801264A1 (en) * | 2005-12-22 | 2007-06-27 | Sgl Carbon Ag | Cathodes for aluminium electrolysis cell with expanded graphite lining |
| CN1900372A (en) * | 2006-05-24 | 2007-01-24 | 中国铝业股份有限公司 | Roasting coke particle laying method for pre-roasting aluminum electrolytic bath |
| CN100478500C (en) * | 2007-03-02 | 2009-04-15 | 冯乃祥 | Abnormal cathode carbon block structure aluminum electrolysis bath |
| CN101070599A (en) * | 2007-03-16 | 2007-11-14 | 高德金 | Anode carbon block for aluminium electrolysis tank with air-exhaust hole |
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2009
- 2009-10-21 CN CN200910308568A patent/CN102041523B/en active Active
- 2009-12-24 WO PCT/CN2009/075927 patent/WO2011047516A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079829A (en) * | 2019-04-28 | 2019-08-02 | 镇江慧诚新材料科技有限公司 | A kind of char particle packaged type baking start-up method |
| CN110079829B (en) * | 2019-04-28 | 2020-12-01 | 青岛瑞清新材料科技有限公司 | Coke particle packaging type roasting starting method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011047516A1 (en) | 2011-04-28 |
| CN102041523B (en) | 2012-10-03 |
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