CN102747383B - Usage method of prebaked anode - Google Patents
Usage method of prebaked anode Download PDFInfo
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- CN102747383B CN102747383B CN201110096492.5A CN201110096492A CN102747383B CN 102747383 B CN102747383 B CN 102747383B CN 201110096492 A CN201110096492 A CN 201110096492A CN 102747383 B CN102747383 B CN 102747383B
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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, particularly relate to a kind of using method of prebaked anode.
Background technology
Prebaked anode is the important source material of Aluminium Electrolysis, and current using method step is followed successively by: anode-baking → anode cooling → anode comes out of the stove → anode assembling → anode conveying → anode on groove.Wherein, anode-baking covers around anode with calcined coke, hard coal, coke as stopping composition, under the condition of isolated air, Anode Block is placed in anode-baking furnace and is warming up to 1100-1300 DEG C, roasting 6-9 days, object gets rid of volatile matter, improves anode carbon block physical strength and electroconductibility; Anode is come out of the stove, be by roasting after anode carbon block take out from anode-baking furnace; Anode carbon block is come out of the stove and is cooled to room temperature, facilitates anode assembling and quality inspection; Anode assembling refers to uses phosphorus pig iron casting, connects into as a whole by the steel pawl on anode rod and anode carbon block; On anode, groove refers to and controls anode rod by overhead traveling crane, anode is installed to electrolyzer predetermined position.
To sum up, existing anode is after high-temperature roasting, cooling assembling of coming out of the stove, and load in the electrolyzer of about 950 DEG C, 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
Embodiments provide a kind of using method of prebaked anode, eliminate the step of prior art Anodic cooling, direct employing anodic is assembled and groove step on hot anode, anode heat is brought in electrolyzer, both improve anode conductivity, reduce again anode iron-carbon pressure to fall, thus reduce electrolysis energy consumption and anode consumption.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A using method for prebaked anode, comprises step: anode-baking, anode come out of the stove conveying, anode assembling, anode transport and anode on groove; The hot temperature of anode that the transport of anode assembling, anode and anode use in groove step is 50-500 DEG C.
Preferably, hot temperature of anode anode assembling, anode transport and anode used in groove step is 50-350 DEG C.
Preferably, the method also comprises, and come out of the stove conveying, anode assembling, anode transportation of anode implements hot anode heat-insulation step.
Preferably, anode heat-insulation step is: be placed on by hot anode in anode heat-insulation device, and anode heat-insulation device is provided with anode rod entrance and phosphorus molten pig iron entrance.
Preferably, this anode heat-insulation crust of the device and/or agent structure are that calcium silicate board or asbestos are made.
Preferably, this anode heat-insulation device is stay-warm case on anode conveyor chain or insulation can.
Compared with prior art, the present invention has following beneficial effect:
1, reduce energy consumption: cold wet anode, after upper groove, can absorb amount of heat in electrolyzer, and use temperature of the present invention is the hot anode of 50-500 DEG C, can reduce anode and absorb heat, significantly reduce anode iron-carbon pressure simultaneously and fall, energy conservation and consumption reduction effects is remarkable.
2, strengthen electrolyzer stability: " pin shakes " affects the stability of electrolyzer, reducing current efficiency, is ubiquitous technical problem in electrolysis production process; And be that the hot anode of 50-500 DEG C loads electrolyzer by temperature, effectively can reduce the generation frequency of " pin shakes " phenomenon, be beneficial to electrolyzer stably manufactured and energy-saving and cost-reducing.
3, improve electroconductibility: on existing cold wet anode after groove, surface forms rapidly one deck condensation ionogen, and along with temperature of anode raises, the electric current passed through increases gradually, within 36-48 hour after upper groove, just reaches normal value.And the present invention adopts the hot anode of high temperature, anodic current can be shortened and reach normal value time 10-15 hour, thus improve anode conductivity.
4, reduce anode crack and fall slag rate: prebaked anode is the relatively poor hard crisp ceramic of heat-shock resistance, cold wet new anode and the electrolyzer temperature difference larger, more than 900 DEG C, anode can produce cracking because of thermal shock resistance difference, falls slag, fall the phenomenons such as block, thus make electric energy, supplies consumption increases substantially, current efficiency declines.And adopt the hot anode of high temperature, the probability that anode crack falls slag can be reduced to a certain extent, thus reduce anode consumption.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention is by omitting the step of anode cooling, direct employing anodic carries out groove step on anode assembling and anode, anode heat is brought in electrolyzer, both improves anode conductivity, reduce again anode iron-carbon pressure to fall, thus reduce electrolysis energy consumption and anode consumption.
It is below specific embodiment.
Embodiment one,
Step 1: anode-baking
After-smithing petroleum coke aggregate and Coal-tar Pitch are contained in open-type anode roasting furnace through the green anode that kneading, vibrating forming are made, under isolated air conditions, add thermal bake-out by predetermined heating curve.Along with binding agent carry out decomposing, be polymerized, pyrogenic reaction, between carbon granule, form coke network, thus monoblock anode become have the ripe anode of certain physical strength and electroconductibility.
Step 2: anode is come out of the stove conveying
Come out of the stove and adopt crown block clamp to be hung out by anode carbon block, then clear up the stopping composition that anode carbon block adheres to.When embodiment of the present invention anode carbon block is come out of the stove and is selected in comparatively high temps, make full use of anode carbon block heat.
Step 3: anode assembling
Anode rod is fixed in the charcoal bowl of anode top, then pours phosphorus molten pig iron into, make anode rod and charcoal block compact siro spinning technology.
Step 4: anode transports
Use the mode such as anode trailer, conveyor that the hot anode assembled is transported to cell room specified location.
Step 5: groove on anode
Utilizing multifunction crane, is that the hot anode of 50-500 DEG C loads electrolyzer predetermined position by charcoal deblocking temperature.Particularly, hot temperature of anode is higher, reduces energy consumption effect better.
Embodiment two,
Step 1: anode-baking
Be ripe anode by the roasting of green anode block in open-type anode roasting furnace.
Step 2: anode is come out of the stove conveying
Come out of the stove when anode does not cool completely, retain its heat, hot temperature of anode remains within the scope of 50-500 DEG C.
Step 3: anode heat-insulation
After coming out of the stove, hot anode temperature being about 50-500 DEG C is placed in anode heat-insulation device and is incubated, and reaches the object that before making groove, hot temperature of anode can not decline to a great extent.
Anode heat-insulation device is a relatively airtight device, 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 make, and attemperator structure can be stay-warm case on insulation can, anode conveyor chain or other can insulation construction, does not affect the realization of the embodiment of the present invention.
Anode heat-insulation device can be provided with anode rod entrance and phosphorus molten pig iron entrance, facilitate subsequent operations.Anode rod entrance can be arranged on crown center position or the side of anode heat-insulation device; The shape of the stay-warm case anode rod entrance on anode conveyor chain can be an opening (anode rod vertically place) isometric with anode heat-insulation device, or opening isometric with anode heat-insulation device on two sides (anode rod horizontal positioned), facilitates anode rod with anode movement.
Step 4: anode assembling
Utilize assembling catenary system, anode rod is inserted in the charcoal bowl of anode carbon block from the anode rod ingress anode heat-insulation device, phosphorus molten pig iron is poured in charcoal bowl from the phosphorus molten pig iron entrance anode heat-insulation device.
Step 5: anode transports
Use the mode such as anode trailer, conveyor that the anode assembled is transported to cell room specified location.
Step 6: groove on anode
By multifunction crane handling, be that the hot anode of 50-500 DEG C loads electrolyzer predetermined position by temperature.
Above the using method of a kind of prebaked anode that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in summary, this description should not be construed as limitation of the present invention.
Claims (1)
1. a using method for prebaked anode, is characterized in that, comprises step: anode-baking, anode come out of the stove conveying, anode assembling, anode transport and anode on groove; The hot temperature of anode that the transport of described anode assembling, anode and anode use in groove step is 350-500 DEG C; The using method of described a kind of prebaked anode, also comprises, and in anode carbon block comes out of the stove conveying, anode assembling and anode trafficking step, antianode is incubated; Wherein, anode heat-insulation step is: be placed on by hot anode in anode heat-insulation device; Described anode heat-insulation device is provided with anode rod entrance and phosphorus molten pig iron entrance, described anode rod entrance is arranged on crown center position or the side of described anode heat-insulation device, the shell of described anode heat-insulation device and/or agent structure are that calcium silicate board or asbestos are made, and described anode heat-insulation device is the stay-warm case on insulation can or 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 CN102747383A (en) | 2012-10-24 |
| CN102747383B true CN102747383B (en) | 2015-06-24 |
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Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2641009A1 (en) * | 2008-10-09 | 2010-04-09 | Alcan International, Limited | Method of introducing boron into anodes to produce aluminum |
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Patent Citations (3)
| 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 |
| 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 |
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| "铝电解预焙阳极热块浇铸上槽试验探讨";刘志祥;《云南冶金》;20100731;第39卷;第67-68页 * |
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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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Granted publication date: 20150624 Termination date: 20170418 |