CN105551560B - The preparation method of smelting electrode material - Google Patents
The preparation method of smelting electrode material Download PDFInfo
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- CN105551560B CN105551560B CN201511011288.3A CN201511011288A CN105551560B CN 105551560 B CN105551560 B CN 105551560B CN 201511011288 A CN201511011288 A CN 201511011288A CN 105551560 B CN105551560 B CN 105551560B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Abstract
The invention discloses a kind of smelting electrode material, mainly it is prepared by following raw materials according, is mass parts：3.5 5 parts of electric calcined anthracite, 2.8 6 parts of after-smithing petroleum coke, 1.0 1.8 parts of resin modified asphalt, 0.08 0.12 parts of attapulgite, 0.06 0.15 parts of carborundum, 1.2 1.5 parts of medium temperature coal pitch powder.The made electrode paste compression strength of the present invention is high, and plasticity is good, and resistivity is low, good thermal shock, and ash content and volatile matter content are small, environmentally friendly, is worthy to be popularized.
Description
Technical field
The present invention relates to metallurgical engineering field of non-metallic materials, more particularly to a kind of preparation side of smelting electrode material
Method.
Background technology
Electrode paste is supplied with the conductive material that the furnace equipments such as ferro-alloy furnace, furnace of calcium carbide use.In electric furnace, continuous self-baking
The effect of electrode is from the smelting area that transformer is imported in stove, so as to complete smelting process by electric energy.Continuous self baking electrode be by
Load the electrode paste of electrode bucket, through what is melted, be calcined densification and formed.Electrode is to occupy of crucial importancely in whole electric furnace
Position, without it, electric furnace can not just act.Make electrode normal work at temperature caused by electric arc, it is necessary to have
The oxidative resistance and electric conductivity of height, this only has electrode made of carbon materials, just there is this property, because carbon pole can be held
Only slowly aoxidized by the arc temperature up to 3500 DEG C.
The A of publication No. CN 103832992（Application number 201210470786.4）Chinese patent literature disclose a kind of electricity
Pole is pasted and preparation method, electrode paste are made up of solid material and adhesive；Wherein solid material is made up of anthracite, coke and graphite,
Adhesive is made up of pitch and tar；By weight percentage, wherein anthracitic content is 40%-50%, coke content is
18%-22%, content of graphite 6%-8%, bitumen content 13%-15%, tar content 13%-15%.Publication No. CN
102956281 A（Application number 201210436294.3）Chinese patent literature disclose a kind of electrode paste and preparation method thereof,
It is made up of the raw material of following mass percent：Anode scrap block 65~70%, electric calcined anthracite 8~15%, medium temperature coal pitch 20~
25%.The A of publication No. CN 103796366（Application number 201410019699.6）Chinese patent literature disclose a kind of closed electricity
Pole is pasted and its manufacture method, a kind of closed electrode paste of the present invention, using carbon raw materials as aggregate, using organic compound as binding agent,
It is fabricated through processes such as broken, screening, the fusing of milling, dispensing, binding agent, dry-mixed, wet mixing, drawing paste shapings.
Electrode paste producer prepares electrode paste using the general raw materials such as anthracite, metallurgical coke of forging in the past, though its cost is low, electricity
Resistance is higher, adds the production cost using producer, though some existing producers have used electric calcined anthracite, petroleum coke as raw material,
More traditional production method so that the poor-performing of electrode paste, and unstable product quality, therefore want to improve electrode paste
Performance and stability are, it is necessary to further improve the production method of electrode paste.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide the smelting electricity consumption that a kind of cost is cheap, stability is good
The preparation method of pole material.
The technical scheme is that：
Smelting electrode material, is mainly prepared by following raw materials according, is mass parts：Electric calcined anthracite 3.5-5 parts, forge
Petroleum coke 2.8-6 parts afterwards, resin modified asphalt 1.0-1.8 parts, attapulgite 0.08-0.12 parts, carborundum 0.06-0.15 parts,
Medium temperature coal pitch powder 1.2-1.5 parts.
In preferable scheme, electric calcined anthracite 4.0-4.5 parts, after-smithing petroleum coke 3.2-5.6 parts, resin modified asphalt 1.2-
1.6 parts, attapulgite 0.09-0.11 parts, carborundum 0.08-0.13 parts, medium temperature coal pitch powder 1.3-1.4 parts.
More preferred, 4.25 parts of electric calcined anthracite, 4.4 parts of after-smithing petroleum coke, 1.4 parts of resin modified asphalt, concave convex rod
0.10 part of soil, 0.105 part of carborundum, 1.35 parts of medium temperature coal pitch powder.
The preparation method of described smelting electrode material, step are：
（1）By electric calcined anthracite crushing and classification, the wherein mm of granularity 10~20 for primary granule material, the mm of granularity 5~10
For secondary granule material；
（2）To be classified after after-smithing petroleum coke screening milling, wherein 1~5mm of granularity for tertiary granule material, granularity 0.25
Mm~1mm for level Four particulate material, 0.05~0.25mm of granularity for Pyatyi particulate material；
（3）Be milled classification after attapulgite and carborundum are sieved respectively, wherein 0.05~0.25mm of granularity for Pyatyi
Particulate material, 0~0.05mm of granularity for six grade particles material；
（4）According to primary granule material, resin modified asphalt, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi
The order of particulate material, six grade particles material and medium temperature coal pitch powder sequentially adds to stir in closed kolleroang, kneading and compacting.
The preparation method of described smelting electrode material, step（4）Feed time is at intervals of 10~15 min（It is preferred that
, feed time is at intervals of 13min）.
The preparation method of described smelting electrode material, step（4）20~35 min are sufficiently stirred after charging completely（It is excellent
Choosing, it is sufficiently stirred 30 min after charging completely）.
The preparation method of described smelting electrode material, step（4）The min of kneading time 60~80（Preferably, kneading
The min of time 70）.
The preparation method of described smelting electrode material, step（4）Electrode paste is molded at normal temperatures, is vacuumized drying and is carried
Take the easy volatile solvent contained in resin.
Smelting electrode lower cost for material provided by the invention, process controllability are good.In addition, it is of the invention excellent
Effect is also manifested by：The made electrode paste compression strength of the present invention is high, and plasticity is good, and resistivity is low, good thermal shock, and ash content
It is small with volatile matter content, it is environmentally friendly, it is worthy to be popularized.
Embodiment
Technical scheme, but protection domain not limited to this are described in detail with reference to embodiment and experimental example.
The smelting electrode material of embodiment 1, is mainly prepared by following raw materials according（Every part of 10kg）：Electric calcined anthracite
3.5 parts, 2.8 parts of after-smithing petroleum coke, 1.0 parts of resin modified asphalt, 0.08 part of attapulgite, 0.06 part of carborundum, the drip of medium temperature coal
Blue or green 1.2 parts of powder.
Above-mentioned smelting is with the preparation method of electrode material：
（1）By electric calcined anthracite（Carbon product Co., Ltd is reached purchased from Ningxia Huambo）Crushing and classification, wherein granularity 10
~20 mm for primary granule material, the mm of granularity 5~10 for secondary granule material；
（2）By after-smithing petroleum coke（Purchased from Rui Chi carbon products Co., Ltd）Screening milling after be classified, wherein granularity 1~
5mm for tertiary granule material, 0.25 mm of granularity~1mm for level Four particulate material, 0.05~0.25mm of granularity for five grade particles
Material；
（3）By attapulgite（Purchased from Xuyi Xin Yuan Science and Technology Ltd.s）And carborundum（It is really resistance to purchased from Anyang County casting
Material Co., Ltd）Be milled classification after sieving respectively, wherein 0.05~0.25mm of granularity for Pyatyi particulate material, granularity 0~
0.05mm for six grade particles material；
（4）According to primary granule material, resin modified asphalt（Purchased from Zibo City development zone limited public affairs of sharp refractory material forever
Department）, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder（It is purchased from
In Handan City through vast and boundless trade Co., Ltd）Order sequentially add and stirred in closed kolleroang, during each feeding interval
Between be 10min, charging completely after be sufficiently stirred 20min, be molded under kneading 60min normal temperature, vacuumize and contain in dry extraction resin
Some easy volatile solvents.
The smelting electrode material of embodiment 2, is mainly prepared by following raw materials according（Every part of 10kg）：Electric calcined anthracite 5
Part, 6 parts of after-smithing petroleum coke, 1.8 parts of resin modified asphalt, 0.12 part of attapulgite, 0.15 part of carborundum, medium temperature coal pitch powder
1.5 part.
Smelting is with the preparation method of electrode material：
（1）By electric calcined anthracite（Carbon product Co., Ltd is reached purchased from Ningxia Huambo）Crushing and classification, wherein granularity 10
~20 mm for primary granule material, the mm of granularity 5~10 for secondary granule material；
（2）By after-smithing petroleum coke（Purchased from Rui Chi carbon products Co., Ltd）Screening milling after be classified, wherein granularity 1~
5mm for tertiary granule material, 0.25 mm of granularity~1mm for level Four particulate material, 0.05~0.25mm of granularity for five grade particles
Material；
（3）By attapulgite（Purchased from Xuyi Xin Yuan Science and Technology Ltd.s）And carborundum（It is really resistance to purchased from Anyang County casting
Material Co., Ltd）Be milled classification after sieving respectively, wherein 0.05~0.25mm of granularity for Pyatyi particulate material, granularity 0~
0.05mm for six grade particles material；
（4）According to primary granule material, resin modified asphalt（Purchased from Zibo City development zone limited public affairs of sharp refractory material forever
Department）, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder（It is purchased from
In Handan City through vast and boundless trade Co., Ltd）Order sequentially add and stirred in closed kolleroang, during each feeding interval
Between be 15min, charging completely after be sufficiently stirred 35min, be molded under kneading 80min normal temperature, vacuumize and contain in dry extraction resin
Some easy volatile solvents.
The smelting electrode material of embodiment 3, is mainly prepared by following raw materials according（Every part of 10kg）：Electric calcined anthracite
4.0 parts, 3.2 parts of after-smithing petroleum coke, 1.2 parts of resin modified asphalt, 0.09 part of attapulgite, 0.08 part of carborundum, the drip of medium temperature coal
Blue or green 1.3 parts of powder.
Smelting is with the preparation method of electrode material：
（1）By electric calcined anthracite（Carbon product Co., Ltd is reached purchased from Ningxia Huambo）Crushing and classification, wherein granularity 10
~20 mm for primary granule material, the mm of granularity 5~10 for secondary granule material；
（2）By after-smithing petroleum coke（Purchased from Rui Chi carbon products Co., Ltd）Screening milling after be classified, wherein granularity 1~
5mm for tertiary granule material, 0.25 mm of granularity~1mm for level Four particulate material, 0.05~0.25mm of granularity for five grade particles
Material；
（3）By attapulgite（Purchased from Xuyi Xin Yuan Science and Technology Ltd.s）And carborundum（It is really resistance to purchased from Anyang County casting
Material Co., Ltd）Be milled classification after sieving respectively, wherein 0.05~0.25mm of granularity for Pyatyi particulate material, granularity 0~
0.05mm for six grade particles material；
（4）According to primary granule material, resin modified asphalt（Purchased from Zibo City development zone limited public affairs of sharp refractory material forever
Department）, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder（It is purchased from
In Handan City through vast and boundless trade Co., Ltd）Order sequentially add and stirred in closed kolleroang, during each feeding interval
Between be 10min, charging completely after be sufficiently stirred 20min, be molded under kneading 60min normal temperature, vacuumize and contain in dry extraction resin
Some easy volatile solvents.
The smelting electrode material of embodiment 4, is mainly prepared by following raw materials according（Every part of 10kg）：Electric calcined anthracite
4.5 parts, 5.6 parts of after-smithing petroleum coke, 1.6 parts of resin modified asphalt, 0.11 part of attapulgite, 0.13 part of carborundum, the drip of medium temperature coal
Blue or green 1.4 parts of powder.
Smelting is with the preparation method of electrode material：
（1）By electric calcined anthracite（Carbon product Co., Ltd is reached purchased from Ningxia Huambo）Crushing and classification, wherein granularity 10
~20 mm for primary granule material, the mm of granularity 5~10 for secondary granule material；
（2）By after-smithing petroleum coke（Purchased from Rui Chi carbon products Co., Ltd）Screening milling after be classified, wherein granularity 1~
5mm for tertiary granule material, 0.25 mm of granularity~1mm for level Four particulate material, 0.05~0.25mm of granularity for five grade particles
Material；
（3）By attapulgite（Purchased from Xuyi Xin Yuan Science and Technology Ltd.s）And carborundum（It is really resistance to purchased from Anyang County casting
Material Co., Ltd）Be milled classification after sieving respectively, wherein 0.05~0.25mm of granularity for Pyatyi particulate material, granularity 0~
0.05mm for six grade particles material；
（4）According to primary granule material, resin modified asphalt（Purchased from Zibo City development zone limited public affairs of sharp refractory material forever
Department）, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder（It is purchased from
In Handan City through vast and boundless trade Co., Ltd）Order sequentially add and stirred in closed kolleroang, during each feeding interval
Between be 15min, charging completely after be sufficiently stirred 35min, be molded under kneading 80min normal temperature, vacuumize and contain in dry extraction resin
Some easy volatile solvents.
The smelting electrode material of embodiment 5, is mainly prepared by following raw materials according（Every part of 10kg）：Electric calcined anthracite
4.25 parts, 4.4 parts of after-smithing petroleum coke, 1.4 parts of resin modified asphalt, 0.10 part of attapulgite, 0.105 part of carborundum, medium temperature coal
1.35 parts of asphalt powder.
Smelting is with the preparation method of electrode material：
（1）By electric calcined anthracite（Carbon product Co., Ltd is reached purchased from Ningxia Huambo）Crushing and classification, wherein granularity 10
~20 mm for primary granule material, the mm of granularity 5~10 for secondary granule material；
（2）By after-smithing petroleum coke（Purchased from Rui Chi carbon products Co., Ltd）Screening milling after be classified, wherein granularity 1~
5mm for tertiary granule material, 0.25 mm of granularity~1mm for level Four particulate material, 0.05~0.25mm of granularity for five grade particles
Material；
（3）By attapulgite（Purchased from Xuyi Xin Yuan Science and Technology Ltd.s）And carborundum（It is really resistance to purchased from Anyang County casting
Material Co., Ltd）Be milled classification after sieving respectively, wherein 0.05~0.25mm of granularity for Pyatyi particulate material, granularity 0~
0.05mm for six grade particles material；
（4）According to primary granule material, resin modified asphalt（Purchased from Zibo City development zone limited public affairs of sharp refractory material forever
Department）, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder（It is purchased from
In Handan City through vast and boundless trade Co., Ltd）Order sequentially add and stirred in closed kolleroang, during each feeding interval
Between be 13min, charging completely after be sufficiently stirred 30min, be molded under kneading 70min normal temperature, vacuumize and contain in dry extraction resin
Some easy volatile solvents.
Primary raw material is as follows used in the present invention：
Electric calcined anthracite：It is using high-quality anthracite as raw material, is produced through the 2000 DEG C of calcinings of single-phase alternating current forge furnace,
Moisture removal, volatile matter can be effectively removed in production process, improves density and conductance, strengthens mechanical strength and anti-oxidant degree.Tool
There are low ash, low-sulfur, low-phosphorous, golf calorific value, the good characteristic of high compressive strength.
After-smithing petroleum coke：Refer to be calcined green coke, calcining heat typically at 1300 DEG C or so, removes petroleum coke as far as possible
Volatile matter, so as to reduce the hydrogen content of petroleum coke reproduced goods, improve the degree of graphitization of petroleum coke, so as to improve graphite electricity
The elevated temperature strength and heat resistance of pole, improve the electrical conductivity of graphite electrode.
Resin modified asphalt：It is to fill the high molecular polymer such as resin into pitch to be modified pitch, or takes pair
The measures such as pitch mild oxidation processing, make the performance of pitch or asphalt be improved manufactured asphalt binder.With tree
The pitch that fat is modified can improve cold resistance, heat resistance, caking property and the air impermeability of pitch.
Attapulgite：It is a kind of clay mineral of zeopan containing Shuifu County for having chain layer structure.With uniqueness it is scattered,
The good colloidal nature such as high temperature resistant, salt resistance alkali and higher adsorption bleaching ability, and there is certain plasticity and cohesive force.
Carborundum：It is with quartz sand, petroleum coke（Or coal tar）, wood chip（Need to add salt when producing green silicon carbide）Etc. original
Material is formed by resistance furnace pyrolytic semlting.Carborundum has that corrosion-resistant, high temperature resistant, intensity are big, heat conductivility is good, shock resistance etc.
Characteristic, available for various smelting furnace linings, High-temp. kiln component, carborundum plate, liner plate, support member, saggar, silicon carbide crucible etc..
Medium temperature coal pitch powder：It is that coal tar distillation extracts the residue after cut, 75-95 DEG C of softening point.It is mainly used in
Coating, electrode, pitch coke, asphalt felt etc. are manufactured, can also make the raw material of fuel and pitch carbon black.
The present invention gained smelting electrode material of test example 1（Embodiment 5）Physical and chemical index：
With reference to People's Republic of China's iron and steel industry professional standard《Electrode paste YBT5215-1996》In on electrode paste
Physical and chemical index regulation such as table 1.
The electrode paste national standard of table 1
The measure of physical and chemical index：Assay method with reference to ash content specified in GB1429-2009 assay method, in GB8720
The assay method of defined volatile matter, the assay method of compression strength specified in GB1431, resistivity specified in GB6717
Assay method, elongation percentage specified in the assay method and YB/T5289-2001 of bulk density specified in GB6154
Assay method.
As a result the physical and chemical index for measuring the made electrode paste of the present invention is shown in Table 2.
The physical and chemical index of the made electrode paste of the present invention of table 2
As shown in Table 2, the made electrode paste indices of the present invention meet national standard reference, and its ash content and resistivity
The maximum required in national standard is significantly lower than, ash content is less than the 18.5% of requirements of the national standard maximum, resistivity
Less than the 6.2% of requirements of the national standard maximum, its compression strength is higher by requirements of the national standard most apparently higher than national standard
The 45.0% of lower bound degree, illustrate products made thereby of the present invention, there is preferable stability and crushing resistance, while can also reduce using factory
The production cost of family, reduces the pollution to environment.
It should be pointed out that embodiment is the more representational example of the present invention, it is clear that skill of the invention
Art scheme is not limited to above-described embodiment, can also there is many variations.One of ordinary skill in the art, it is clearly public with institute of the invention
Written description open or according to file is undoubted to be obtained, and is considered as this patent scope of the claimed.
Claims (5)
1. the preparation method of smelting electrode material, it is characterised in that be prepared by following raw materials according, be mass parts：Electricity is forged
4.25 parts of anthracite, 4.4 parts of after-smithing petroleum coke, 1.4 parts of resin modified asphalt, 0.10 part of attapulgite, 0.105 part of carborundum,
1.35 parts of medium temperature coal pitch powder；Step is：
（1）By electric calcined anthracite crushing and classification, the wherein mm of granularity 10~20 for primary granule material, the mm's of granularity 5~10 is
Secondary granule material；
（2）To be classified after after-smithing petroleum coke screening milling, wherein 1~5mm of granularity for tertiary granule material, the mm of granularity 0.25~
1mm for level Four particulate material, 0.05~0.25mm of granularity for Pyatyi particulate material；
（3）Be milled classification after attapulgite and carborundum are sieved respectively, wherein 0.05~0.25mm of granularity for five grade particles
Material, 0~0.05mm of granularity for six grade particles material；
（4）According to primary granule material, resin modified asphalt, secondary granule material, tertiary granule material, level Four particulate material, five grade particles
Material, the order of six grade particles material and medium temperature coal pitch powder, which sequentially add, stirs 20~35 min to uniform in closed kolleroang,
For feed time at intervals of 10~15 min, the kneading time is 60~80 min, shaping.
2. preparation method as claimed in claim 1, it is characterised in that step（4）Feed time is at intervals of 13min.
3. preparation method as claimed in claim 1, it is characterised in that step（4）30 min are sufficiently stirred after charging completely.
4. preparation method as claimed in claim 1, it is characterised in that step（4）The min of kneading time 70.
5. preparation method as claimed in claim 1, it is characterised in that step（4）Electrode paste is molded at normal temperatures, is vacuumized dry
The easy volatile solvent contained in dry extraction resin.
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| CN101949034A (en) * | 2010-09-30 | 2011-01-19 | 广西强强碳素股份有限公司 | Cathode graphitizing current stop block for aluminum electrolysis |
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| US3505263A (en) * | 1965-04-08 | 1970-04-07 | Dow Chemical Co | Resin bonded semiconducting compositions of calcined petroleum coke |
| CN101696003B (en) * | 2009-10-26 | 2011-10-12 | 武建国 | Technical formulation for carbon electrode and method for producing carbon electrode |
| CN102101664B (en) * | 2009-12-21 | 2013-02-13 | 河北联冠电极股份有限公司 | High-strength high-graphite carbon electrode and preparation method thereof |
| CN104341154A (en) * | 2013-07-30 | 2015-02-11 | 青岛广星电子材料有限公司 | Cathode graphite material used for electrolysis |
| CN103796366B (en) * | 2014-01-16 | 2016-10-05 | 民和光大炭素有限公司 | A kind of airtight electrode paste and manufacture method thereof |
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| CN101949034A (en) * | 2010-09-30 | 2011-01-19 | 广西强强碳素股份有限公司 | Cathode graphitizing current stop block for aluminum electrolysis |
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