CN103084538A - Method for spraying graphite paste on surface of anode steel claw - Google Patents
Method for spraying graphite paste on surface of anode steel claw Download PDFInfo
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- CN103084538A CN103084538A CN2011103357074A CN201110335707A CN103084538A CN 103084538 A CN103084538 A CN 103084538A CN 2011103357074 A CN2011103357074 A CN 2011103357074A CN 201110335707 A CN201110335707 A CN 201110335707A CN 103084538 A CN103084538 A CN 103084538A
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Abstract
The invention discloses a method for spraying a graphite paste on the surface of an anode steel claw. The method comprises the following steps: uniformly mixing kerosene with graphite to form the graphite paste, and spraying the surface of the anode steel claw with the mixture comprising kerosene and graphite through a spray tool by adopting compressed air having a pressure of 0.3-0.6MPa as a carrier, wherein the content of graphite is 5-35% of the total weight of the graphite paste. The graphite paste spraying method provided in the embodiment of the invention has the advantages of uniform and tight attachment and difficult shedding of the sprayed graphite paste, substantial reduction of the content of graphite in the graphite paste, and cost saving.
Description
Technical field
The present invention relates to aluminum electrolyzing cell used prebaked anode package technique field, relate in particular to a kind of method of sticking with paste at anode steel claw surface spraying graphite.
Background technology
During the inherent assembling of aluminium electroloysis industry charcoal element prebaked anode, in order to prevent that phosphorus molten pig iron from rushing the steel pawl when the casting and iron hoop clings the steel pawl, general first at anode steel claw head graphite powder then the phosphorus molten pig iron of casting.Concrete technology is: A, graphite powder are put into kerosene or diesel oil furnishing pasty state, and the ratio that graphite accounts for the graphite paste is generally 25%～40%; B, with brush brush on steel pawl head, perhaps directly steel pawl head is stained with in graphite is stuck with paste; C, with natural gas or electrical heating oven dry graphite linings.There are following problem in this technique and proportioning:
The bonding force of this technique graphite on steel pawl head is not strong, thereby when the assembling casting, because the steel pawl is subject to washing away of phosphorus molten pig iron, part graphite is from breaking away from from the anode steel claw head, float over the phosphorus molten pig iron surface, even solidifying in the middle of phosphorus molten pig iron increases phosphorus pig iron self-resistance, reduces phosphorus pig iron intensity.Even this formula Design person has considered this problem, thereby the ratio that makes graphite account for the graphite paste increases to 25%～40% to satisfy Production requirement, still, has equally also wasted wherein about 20% graphite.
Summary of the invention
The embodiment of the present invention provides a kind of method of sticking with paste at anode steel claw surface spraying graphite, and can not only make graphite in spraying stick with paste and evenly be adjacent to, difficult drop-off, and greatly reduce the content of graphite of graphite in sticking with paste, save cost.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A kind of method of sticking with paste at anode steel claw surface spraying graphite comprises step:
A, kerosene and graphite evenly are mixed into graphite stick with paste, described graphite accounts for the 5-35% that described graphite is stuck with paste gross weight;
B, adopt 0.3～0.6 MPa compressed air as carrier, described graphite is stuck with paste by spraycan is sprayed into the anode steel claw surface.
Preferably, step B continues 2-7S.
Preferably, described graphite granule diameter is between 25-80 μ m.
Preferably, spraying rate is 25-50L/min.
Preferably, the single coating thickness is 0.1-0.8mm.
Preferably, described spraycan is spray gun or pulp shooting machine.
Preferably, described graphite accounts for the 10-15% that described graphite is stuck with paste quality.
Preferably, described step B spraying scope is: steel pawl bottom is above 100mm At The Height to the bottom.
Preferably, repeating step B2-4 time, every minor tick 2-5S.
Compared with prior art, the present invention has following beneficial effect:
1, efficient is high: a, anode joint of prior art processing approximately need 60-70s, and the embodiment of the present invention can adopt many shower nozzles to spray, and need not oven dry, and processing an anode joint only needs 2-7 about second; B, the employing embodiment of the present invention, casting only need just can be completed for 1 time, and prior art needs 2 times.The embodiment of the present invention per hour improves 4 groups of casting efficient compared to existing technology, reduces phosphorus pig iron ring teeming frequency, enhances productivity; C, need not oven dry: the coating of spraycan is fine and smooth thin easily dried, and solvent kerosene is volatile, and natural drying getting final product after spraying need not extra baking operation;
2, raising quality of anode: a, graphite are stuck with paste and is close to the steel pawl: the present invention adopts spraycan that short grained graphite coating is surperficial to anode steel claw, it is surperficial that the impulsive force that compressed air gives enough makes graphite be fitted in the steel pawl, and the coverage rate of spraycan is even, can the casting of phosphorus molten pig iron not impacted; B, improve phosphorus pig iron intensity: adopt the embodiment of the present invention, the phosphorus pig iron ring lamination of having avoided 2 casting to cause has also been avoided the generation of the loosening phenomenon of phosphorus pig iron ring simultaneously, iron-carbon pressure is fallen reduce 10mv;
3, economize in raw materials: because taking the spraycan spraying method, graphite is fitted and tightly can not broken away from when the casting phosphorus pig iron, and during the graphite that therefore adopts is stuck with paste, graphite only accounts for the 5-20% that graphite is stuck with paste quality, compared to existing technology, the graphite consumption is reduced by more than 50;
4, improve working environment: take the spraycan spraying method, the kerosene consumption lacks than prior art uses 3～4 times, there is no flame and obvious black smoke during casting.
The specific embodiment
The below will be clearly and completely described the technical scheme in the embodiment of the present invention, and obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention is by adopting spraycan that short grained graphite coating is surperficial to anode steel claw, and the impulsive force that compressed air gives enough makes graphite be fitted in steel pawl difficult disengaging of surface, therefore can be with more than in the graphite paste, the graphite mass ratio is reduced to 5-20%; And coating is thin easily to be done, and solvent kerosene is volatile, and natural drying getting final product after spraying need not oven dry, improves spray efficiency.It is below specific embodiment.
Embodiment one,
A kind of method of sticking with paste at anode steel claw surface spraying graphite comprises step:
A, kerosene and graphite evenly are mixed into graphite stick with paste, described graphite accounts for the 5-35% that described graphite is stuck with paste gross weight;
Evenly mixing can be taked mechanical agitation, pass into the mode such as flowing gas, because of graphite stick with paste in solvent ratios larger, can make graphite granule refinement as much as possible, dispersion after fully mixing, strengthen the spraying uniformity.
Graphite of the prior art accounts for the 25-40% that graphite is stuck with paste quality, is closely easily not come off because the graphite muddle being brushed or dipped to steel pawl surface, fitting, and has wasted large content of starting materials; In fact, being deposited in steel pawl surface plays the graphite of real protection, lubrication and only has 5-35%.
And the embodiment of the present invention adopts compressed air and spraycan that graphite is stuck with paste spraying after atomizing, and spray efficiency Gao Yigan, graphite are adjacent to steel pawl surface fast, and raw material availability is high, and therefore, in the graphite of employing paste raw material, content of graphite can only account for 5-35%.
Preferably, the graphite granule diameter between 25-80 μ m, the particle nonchoking nozzle, spraying effect is better.
B, adopt 0.3～0.6 MPa compressed air as carrier, the mixture of kerosene and graphite is sprayed into the anode steel claw surface by spraycan.
0.3 the compressed air of～0.6 MPa is as carrier, and the mixture of kerosene and graphite is transported on steel pawl head, increased the impulsive force of graphite and steel pawl, thereby graphite is more easily sticked on steel pawl head.Utilize compressed-air actuated air-flow, the nozzle bore that flows through spraycan forms negative pressure, and negative pressure is stuck with paste from suction pipe graphite and sucked, and through the nozzle ejection, forms spraying, is covered to the anode steel claw surface.Nozzle distance anode steel claw surface 20-50cm is advisable, and has both guaranteed spray area, guarantees again the injection dynamics.The sustainable 2-7S of step B keeps spraying effect.
In addition, the mixture of kerosene and graphite can be anode steel claw surface spraying 2-4 time by spraycan.Every minor tick 2-5 is coated with the second layer again after last time, the coating dripless slided.
Spraying rate is 25-50L/min.Lower atomizing graphite is stuck with paste the speed of service and can be improved graphite and stick with paste from the anode steel claw surface and rebound out, and the contamination of raw material environment avoids waste.
When the single coating thickness is 0.1-0.8mm, can satisfy Production requirement, phosphorus molten pig iron and steel pawl can be kept apart, again can be not blocked up and occupy spatial volume in too much charcoal bowl, and then affect thickness and the intensity of phosphorus pig iron ring.
The scope of step B spraying is: steel pawl bottom is above 100mm At The Height to the bottom, can cover the part that phosphorus molten pig iron may touch the steel pawl, thoroughly phosphorus pig iron ring and steel pawl is kept apart.
Embodiment two,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 1: 9, and namely graphite accounts for described graphite and sticks with paste 10% of quality.
B, adopt 0.3 MPa compressed air as carrier, the mixture of kerosene and graphite is surperficial to anode steel claw by spray gun spraying 2 times, interval 20s between twice.Spraying rate is 50L/min, and coating thickness is 0.3mm.
After standing 5min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 10mv.
In standing process, can dry to consolidate spraying effect to graphite linings; But do not dry the realization that does not yet affect the present embodiment.Following examples can be dried acceleration equally, repeat no more.
Embodiment three,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 1: 19, and namely graphite accounts for described graphite and sticks with paste 5% of quality.
B, adopt 0.4 MPa compressed air as carrier, with the mixture of kerosene and graphite by spray gun spraying 4 times to the anode steel claw surface, at every turn between interval 20s.Spraying rate is 450L/min, and coating thickness is 0.8mm.
After standing 10min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 9mv.
Embodiment four,
A, kerosene is evenly mixed with graphite; Graphite and kerosene mass ratio are 1: 4, and namely graphite accounts for described graphite and sticks with paste 20% of quality.
B, adopt 0.6 MPa compressed air as carrier, with the mixture of kerosene and graphite by pulp shooting machine spray 3 times surperficial to anode steel claw, at every turn between interval 20s.Spraying rate is 40L/min, and coating thickness is 0.5mm.
After standing 10min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 9mv.
Embodiment five,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 3: 17, and namely graphite accounts for described graphite and sticks with paste 15% of quality.
The compressed air of B, employing 0.5 MPa is as carrier, and spraying rate is 25L/min, and coating thickness is 0.2mm.
After standing 8min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 10mv.
Embodiment six,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 1: 3, and namely graphite accounts for described graphite and sticks with paste 25% of quality.
The compressed air of B, employing 0.6 MPa is as carrier, and spraying rate is 35L/min, and coating thickness is 0.1mm.
After standing 6min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 9mv.
Embodiment seven,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 3: 7, and namely graphite accounts for described graphite and sticks with paste 30% of quality.
The compressed air of B, employing 0.4 MPa is as carrier, and spraying rate is 30L/min, and coating thickness is 0.3mm.
After standing 6min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 10mv.
Embodiment eight,
A, kerosene and graphite evenly are mixed into graphite stick with paste; Graphite and kerosene mass ratio are 7: 13, and namely graphite accounts for described graphite and sticks with paste 35% of quality.
The compressed air of B, employing 0.4 MPa is as carrier, and spraying rate is 45L/min, and coating thickness is 0.15mm.
After standing 6min, this steel pawl is placed in anode carbon bowl, then at gap casting phosphorus molten pig iron.In casting cycle, do not find the graphite dropping situations.Cast after phosphorus molten pig iron, the steel pawl is fixed; The loosening phenomenon of phosphorus pig iron ring does not occur in this anode in the aluminium cell life cycle, iron-carbon pressure falls and reduces 10mv.
Above a kind of method of sticking with paste at anode steel claw surface spraying graphite that the embodiment of the present invention is provided is described in detail, used specific case herein 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, all will change in specific embodiments and applications, in summary, this description should not be construed as limitation of the present invention.
Claims (9)
1. a method of sticking with paste at anode steel claw surface spraying graphite, is characterized in that, comprises step:
A, kerosene and graphite evenly are mixed into graphite stick with paste, described graphite accounts for the 5-35% that described graphite is stuck with paste gross weight;
B, adopt 0.3～0.6 MPa compressed air as carrier, described graphite is stuck with paste by spraycan is sprayed into the anode steel claw surface.
2. a kind of method of sticking with paste at anode steel claw surface spraying graphite according to claim 1, is characterized in that, step B continues 2-7S.
3. a kind of method of sticking with paste at anode steel claw surface spraying graphite according to claim 1, is characterized in that, described graphite granule diameter is between 25-80 μ m.
4. a kind of method of sticking with paste at anode steel claw surface spraying graphite according to claim 1, is characterized in that, spraying rate is 25-50L/min.
5. a kind of method of sticking with paste at anode steel claw surface spraying graphite according to claim 1, is characterized in that, the single coating thickness is 0.1-0.8mm.
6. a kind of method of sticking with paste at anode steel claw surface spraying graphite according to claim 1, is characterized in that, described spraycan is spray gun or pulp shooting machine.
7. a kind of described method of sticking with paste at anode steel claw surface spraying graphite of according to claim 1 to 6 any one, is characterized in that, described graphite accounts for the 10-15% that described graphite is stuck with paste quality.
8. a kind of described method of sticking with paste at anode steel claw surface spraying graphite of according to claim 1 to 6 any one, is characterized in that, described step B spraying scope is: steel pawl bottom is above 100mm At The Height to the bottom.
9. a kind of described method of sticking with paste at anode steel claw surface spraying graphite of according to claim 1 to 6 any one, is characterized in that repeating step B2-4 time, every minor tick 2-5S.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110335707.4A CN103084538B (en) | 2011-10-30 | 2011-10-30 | A kind of method of sticking with paste at anode steel claw surface spraying graphite |
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| CN201110335707.4A CN103084538B (en) | 2011-10-30 | 2011-10-30 | A kind of method of sticking with paste at anode steel claw surface spraying graphite |
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| CN103084538A true CN103084538A (en) | 2013-05-08 |
| CN103084538B CN103084538B (en) | 2016-05-25 |
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Cited By (2)
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| CN105671593A (en) * | 2016-04-05 | 2016-06-15 | 内蒙古风光源节能环保科技有限公司 | Full-automatic steel claw dry powder and liquid atomization and absorption integrated machine |
| CN108262212A (en) * | 2018-04-18 | 2018-07-10 | 阿坝铝厂 | A kind of aluminum guide steel pawl ferrophosphorus casting end coated with graphite equipment |
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| CN1974862A (en) * | 2006-12-08 | 2007-06-06 | 中国铝业股份有限公司 | Process of dipping graphite onto anode steel pawl |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105671593A (en) * | 2016-04-05 | 2016-06-15 | 内蒙古风光源节能环保科技有限公司 | Full-automatic steel claw dry powder and liquid atomization and absorption integrated machine |
| CN105671593B (en) * | 2016-04-05 | 2017-09-01 | 内蒙古风光源节能环保科技有限公司 | A kind of full-automatic steel pawl dry powder liquid atomization absorption all-in-one |
| CN108262212A (en) * | 2018-04-18 | 2018-07-10 | 阿坝铝厂 | A kind of aluminum guide steel pawl ferrophosphorus casting end coated with graphite equipment |
| CN108262212B (en) * | 2018-04-18 | 2019-11-08 | 阿坝铝厂 | A kind of aluminum guide steel pawl ferrophosphorus casting end coated with graphite equipment |
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| CN103084538B (en) | 2016-05-25 |
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Inventor after: Du Yufeng Inventor after: Wen Baosen Inventor after: Tang Guolin Inventor before: Xiong Ziqiang |
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Effective date of registration: 20171208 Address after: 831300 the Xinjiang Uygur Autonomous Region Wujiaqu City Industrial Park Patentee after: XINJIANG NONGLIUSHI ALUMINUM CO., LTD. Address before: Sheng Tong Industrial Park No. 109 Venus Road 410200 in Hunan province Changsha District of Wangcheng City Patentee before: Hunan Shengtong Technology Group Co., Ltd. |
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