CN102747383A - Usage method of prebaked anode - Google Patents
Usage method of prebaked anode Download PDFInfo
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- CN102747383A CN102747383A CN2011100964925A CN201110096492A CN102747383A CN 102747383 A CN102747383 A CN 102747383A CN 2011100964925 A CN2011100964925 A CN 2011100964925A CN 201110096492 A CN201110096492 A CN 201110096492A CN 102747383 A CN102747383 A CN 102747383A
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- attemperator
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Abstract
The invention discloses a usage method of a prebaked anode. The method comprises the steps of: anode baking, anode discharge and transport, anode assembly, anode transport and anode groove loading. A heated anode used in the steps of anode assembly, anode transport and anode groove loading is at a temperature of 50-500 DEG C. The method provided by the invention omits a step of anode carbon block cooling in an existing technology, and directly uses the high-temperature anode to conduct the steps of anode assembly and anode groove loading, so as to introduce heat of the anode into an electrolyzer. Compared with a cold and wet anode, the heated anode can improve stability of the electrolyzer, enhance electrical conductivity, substantially reduce Fe-C pressure drop of the anode, as well as reduce the rate of cracking and slag ridding of the anode, thereby realizing energy conservation and consumption reduction in aluminum electrolysis.
Description
Technical field
The present invention relates to technical field of aluminum electrolysis, relate in particular to a kind of method of use of prebaked anode.
Background technology
Prebaked anode is the important source material of aluminum electrolysis, and present method of use steps in sequence is: anode-baking → anode cooling → anode comes out of the stove → anode assembling → anode conveying → anode on groove.Wherein, Anode-baking is to cover around the anode as stopping composition with forging back Jiao, hard coal, coke; Under the condition of secluding air, anode is given birth to piece be placed on and be warming up to 1100-1300 ℃ in the anode-baking furnace, roasting 6-9 days; Purpose is to get rid of volatile matter, improves anode carbon block physical strength and electroconductibility; It then is that anode carbon block with after the roasting takes out from anode-baking furnace that anode is come out of the stove; Anode carbon block is come out of the stove and is cooled to room temperature, makes things convenient for anode assembling and quality inspection; The anode assembling is meant with the casting of the phosphorus pig iron, connects into steel pawl on the anode rod and anode carbon block as a whole; Groove is meant through overhead traveling crane control anode rod on the anode, and anode is installed to the electrolyzer predetermined position.
To sum up, existing anode is after high-temperature roasting, the cooling assembling of coming out of the stove, and in the electrolyzer about 950 ℃ of packing into, slowly heat absorption could be conducted electricity after heating up; Go through the process of high-temperature roasting-be cooled to room temperature-heat up again, cause the energy to waste.
Summary of the invention
The embodiment of the invention provides a kind of method of use of prebaked anode; Omitted anode refrigerative step in the prior art; Directly adopt groove step on anodic assembling and the hot anode, anode heat is brought in the electrolyzer, both improved anode conducting property; Reduce anode iron-carbon pressure again and fall, thereby reduce electrolysis energy consumption and anode consumption.
For realizing above-mentioned purpose, the embodiment of the invention provides following technical scheme:
A kind of method of use of prebaked anode comprises step: anode-baking, the anode groove on the assembling of conveying, anode, anode transportation and the anode of coming out of the stove; The hot temperature of anode of using in the groove step on anode assembling, anode transportation and the anode is 50-500 ℃.
Preferably, the hot temperature of anode of using in the groove step on anode assembling, anode transportation and the anode is 50-350 ℃.
Preferably, this method also comprises, hot anode incubation step is implemented in come out of the stove conveying, anode assembling, anode transportation of anode.
Preferably, the anode incubation step is: hot anode is placed in the anode attemperator, and the anode attemperator is provided with anode rod inlet and phosphorus molten pig iron inlet.
Preferably, this anode attemperator shell and/or agent structure are that calcium silicate board or asbestos are processed.
Preferably, this anode attemperator is stay-warm case or the insulation can on the anode conveyor chain.
Compared with prior art, the present invention has following beneficial effect:
1, cut down the consumption of energy: cold wet anode behind last groove, can absorption electrolysis a large amount of heats in the groove, use temperature of the present invention is 50-500 ℃ a hot anode, can reduce anode and absorb heat, significantly reduces anode iron-carbon pressure simultaneously and falls, energy conservation and consumption reduction effects is remarkable.
2, strengthen electrolyzer stability: " pin shakes " influences the stability of electrolyzer, reduces current efficiency, is ubiquitous technical problem in the electrolysis production process; And be 50-500 ℃ the hot anode electrolyzer of packing into temperature, can effectively reduce the generation frequency of " pin shakes " phenomenon, be beneficial to electrolyzer stably manufactured and energy-saving and cost-reducing.
3, improve electroconductibility: behind the groove, the surface forms one deck condensation ionogen rapidly on the existing cold wet anode, and along with temperature of anode raises, the electric current that passes through increases gradually, behind last groove, just reaches normal value in 36-48 hour.And the present invention adopts the hot anode of pyritous, can shorten anodic current and reach 10-15 hour normal value time, thereby improve anode conducting property.
4, reduce the anode slag rate that ftractures: prebaked anode is the relatively poor relatively hard crisp ceramic of heat-shock resistance; The cold wet new anode and the electrolyzer temperature difference are bigger; More than 900 ℃; Anode can produce cracking because of the thermal shock resistance difference, fall slag, fall phenomenon such as piece, thereby electric energy, supplies consumption are increased substantially, and current efficiency descends.And adopt the hot anode of pyritous, can reduce the anode probability of slag that ftractures to a certain extent, thereby reduce anode consumption.
Embodiment
To carry out clear, intactly description to the technical scheme in the embodiment of the invention below, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention is through omitting anode refrigerative step; Directly adopt anodic to carry out groove step on anode assembling and the anode, anode heat is brought in the electrolyzer, both improved anode conducting property; Reduce anode iron-carbon pressure again and fall, thereby reduce electrolysis energy consumption and anode consumption.
It below is specific embodiment.
Embodiment one,
Step 1: anode-baking
The green anode that after-smithing petroleum coke aggregate and coal-tar pitch sticker are pinched through mixing, vibrating forming is processed is contained in the open type anode-baking furnace, under the secluding air condition, adds thermal bake-out by predetermined heating curve.Along with sticker decomposes, polymerization, pyrogenic reaction, between carbon granule, form the coke network, thus the ripe anode that the monoblock anode is become have certain physical strength and electroconductibility.
Step 2: the anode conveying of coming out of the stove
Come out of the stove and adopt a day vehicle clamper that anode carbon block is hung out, clear up adherent stopping composition on the anode carbon block then.Embodiment of the invention anode carbon block is come out of the stove when being selected in comparatively high temps, makes full use of the anode carbon block heat.
Step 3: anode assembling
Anode rod is fixed in the charcoal bowl of anode top, pours phosphorus molten pig iron again into, anode rod closely is connected with the charcoal piece.
Step 4: anode transportation
The hot anode that uses modes such as anode trailer, conveyor to assemble is transported to the cell room specified location.
Step 5: groove on the anode
Utilizing multifunction crane, is 50-500 ℃ the hot anode electrolyzer predetermined position of packing into the charcoal deblocking temperature.Particularly, hot temperature of anode is high more, and the effect that cuts down the consumption of energy is good more.
Embodiment two,
Step 1: anode-baking
In the open type anode-baking furnace, be ripe anode with the roasting of green anode piece.
Step 2: the anode conveying of coming out of the stove
Come out of the stove refrigerative the time fully at anode, keep its heat, hot temperature of anode remains in the 50-500 ℃ of scope.
Step 3: anode insulation
After coming out of the stove, temperature is about 50-500 ℃ hot anode is placed in the anode attemperator and is incubated, reach and make the purpose that hot temperature of anode can not decline to a great extent before the groove.
The anode attemperator is an airtight relatively device, and hot anode heat is gathered in a relative narrow space, reduces its heat and distributes speed.This crust of the device and/or agent structure can be calcium silicate board, asbestos or other insulation materials and process, but the attemperator structure can be stay-warm case or other insulation constructions on insulation can, the anode conveyor chain, does not influence the realization of the embodiment of the invention.
Can be provided with anode rod inlet and phosphorus molten pig iron inlet on the anode attemperator, make things convenient for subsequent operations.The anode rod inlet can be arranged on the crown center position or the side of anode attemperator; The shape of stay-warm case anode rod on anode conveyor chain inlet can be one with the isometric opening (anode rod is vertically placed) of anode attemperator; Perhaps the opening (anode rod horizontal positioned) isometric with the anode attemperator on the two sides makes things convenient for anode rod with anode movement.
Step 4: anode assembling
Utilize the assembling catenary system, the anode rod ingress of anode rod from the anode attemperator inserted the charcoal bowl of anode carbon block, phosphorus molten pig iron is poured in the charcoal bowl from the phosphorus molten pig iron inlet on the anode attemperator.
Step 5: anode transportation
Use modes such as anode trailer, conveyor that the anode that assembles is transported to the cell room specified location.
Step 6: groove on the anode
Through the multifunction crane handling, be 50-500 ℃ the hot anode electrolyzer predetermined position of packing into temperature.
More than the method for use of a kind of prebaked anode that the embodiment of the invention is provided carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change can know that to sum up this description should not be construed as limitation of the present invention.
Claims (6)
1. the method for use of a prebaked anode is characterized in that, comprises step: anode-baking, the anode groove on the assembling of conveying, anode, anode transportation and the anode of coming out of the stove; The hot temperature of anode of using in the groove step on said anode assembling, anode transportation and the anode is 50-500 ℃.
2. the method for use of a kind of prebaked anode according to claim 1 is characterized in that, the hot temperature of anode of using in the groove step on said anode assembling, anode transportation and the anode is 50-350 ℃.
3. the method for use of a kind of prebaked anode according to claim 1 is characterized in that, also comprises, antianode is incubated in anode carbon block is come out of the stove conveying, anode assembling and anode transportation step.
4. the method for use of a kind of prebaked anode according to claim 3 is characterized in that, the anode incubation step is: hot anode is placed in the anode attemperator, and said anode attemperator is provided with anode rod inlet and phosphorus molten pig iron inlet.
5. the method for use of a kind of prebaked anode according to claim 4 is characterized in that, said anode attemperator shell and/or agent structure are that calcium silicate board or asbestos are processed.
6. according to the method for use of claim 4 or 5 described a kind of prebaked anodes, it is characterized in that said anode attemperator is stay-warm case or the insulation can on the anode conveyor chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110096492.5A CN102747383B (en) | 2011-04-18 | 2011-04-18 | Usage method of prebaked anode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110096492.5A CN102747383B (en) | 2011-04-18 | 2011-04-18 | Usage method of prebaked anode |
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| CN102747383A true CN102747383A (en) | 2012-10-24 |
| CN102747383B CN102747383B (en) | 2015-06-24 |
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| CN201110096492.5A Expired - Fee Related CN102747383B (en) | 2011-04-18 | 2011-04-18 | Usage method of prebaked anode |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844141Y (en) * | 2005-09-30 | 2006-12-06 | 河南中孚实业股份有限公司 | Thermal-insulated heat-exchangeable box for replacing aluminium electrolytic bath anode |
| CN101086072A (en) * | 2007-06-07 | 2007-12-12 | 云南铝业股份有限公司 | Pre-baked anode for aluminum electrolysis and its preparation method |
| WO2010040231A1 (en) * | 2008-10-09 | 2010-04-15 | Alcan International Limited | Method of boron introduction in anodes for aluminium production |
| CN201785512U (en) * | 2010-08-14 | 2011-04-06 | 山西华泽铝电有限公司 | Pre-baked anode for high prismatic table aluminum electrolysis |
-
2011
- 2011-04-18 CN CN201110096492.5A patent/CN102747383B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844141Y (en) * | 2005-09-30 | 2006-12-06 | 河南中孚实业股份有限公司 | Thermal-insulated heat-exchangeable box for replacing aluminium electrolytic bath anode |
| CN101086072A (en) * | 2007-06-07 | 2007-12-12 | 云南铝业股份有限公司 | Pre-baked anode for aluminum electrolysis and its preparation method |
| WO2010040231A1 (en) * | 2008-10-09 | 2010-04-15 | Alcan International Limited | Method of boron introduction in anodes for aluminium production |
| CN201785512U (en) * | 2010-08-14 | 2011-04-06 | 山西华泽铝电有限公司 | Pre-baked anode for high prismatic table aluminum electrolysis |
Non-Patent Citations (1)
| Title |
|---|
| 刘志祥: ""铝电解预焙阳极热块浇铸上槽试验探讨"", 《云南冶金》, vol. 39, 31 July 2010 (2010-07-31), pages 67 - 68 * |
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| CN102747383B (en) | 2015-06-24 |
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Address after: Taoyuan County in Hunan province Changde city 415700 disk town Chuangyuan Industrial Park Patentee after: Suntown Technology Group Corporation Address before: Sheng Tong Industrial Park No. 109 Venus 410200 Hunan province Changsha road in Wangcheng County Patentee before: Hunan Shengtong Technology Group Co., Ltd. |
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