CN105551560A - Common electrode material in smelting field and preparation method thereof - Google Patents
Common electrode material in smelting field and preparation method thereof Download PDFInfo
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- 238000003723 Smelting Methods 0.000 title claims abstract description 34
- 239000007772 electrode material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003830 anthracite Substances 0.000 claims abstract description 25
- 239000010426 asphalt Substances 0.000 claims abstract description 25
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 24
- 239000002003 electrode paste Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 229960000892 attapulgite Drugs 0.000 claims abstract description 20
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 57
- 239000008187 granular material Substances 0.000 claims description 42
- 239000011236 particulate material Substances 0.000 claims description 35
- 239000002006 petroleum coke Substances 0.000 claims description 24
- 239000011300 coal pitch Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 14
- 238000004898 kneading Methods 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002008 calcined petroleum coke Substances 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 229910052799 carbon Inorganic materials 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000011295 pitch Substances 0.000 description 8
- 238000003556 assay Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- -1 batching Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000006253 pitch coke Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Carbon And Carbon Compounds (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a common electrode material in the smelting field and a preparation method thereof. The common electrode material is mainly prepared from following raw materials in parts by mass: 3.5-5 parts of electrically calcined anthracite, 2.8-6 parts of calcined petroleum coke, 1.0-1.8 parts of resin modified asphalt, 0.08-0.12 part of attapulgite, 0.06-0.15 part of silicon carbide, and 1.2-1.5 parts of middle temperature coal asphalt powder. The electrode paste prepared by the method has high compressive strength, good plasticity, low resistivity, good thermal shock resistance, and low ash and volatile matter content, is environment-friendly, and is worth of promotion.
Description
Technical field
The present invention relates to metallurgical engineering field of non-metallic materials, particularly relate to a kind of field of smelting common electrode material and preparation method thereof.
Background technology
Electrode paste is the electric conducting material that furnace equipment such as supply ferro-alloy furnace, furnace of calcium carbide etc. uses.In electric furnace, the effect of continuous self baking electrode is the smelting district imported from transformer by electric energy in stove, thus completes smelting process.Continuous self baking electrode is by the electrode paste loading electrode bucket, is formed through fusing, roasting densification.Electrode occupies status of crucial importance in whole electric furnace, does not have it, and electric furnace just cannot produce effect.Normally work at the temperature that electrode is produced at electric arc, must have oxidative resistance and the conductivity of height, this electrode only having carbon materials to make, just has this character, because carbon pole can bear the arc temperature only eremacausis reaching 3500 DEG C.
Publication No. CN103832992A(application number 201210470786.4) Chinese patent literature disclose a kind of electrode paste and preparation method, electrode paste is made up of solid material and adhesive; Wherein solid material is made up of anthracite, coke and graphite, and adhesive is made up of pitch and tar; By weight percentage, wherein anthracitic content is 40%-50%, and coke content is 18%-22%, and content of graphite is 6%-8%, bitumen content 13%-15%, tar content 13%-15%.Publication No. CN102956281A(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%.Publication No. CN103796366A(application number 201410019699.6) Chinese patent literature disclose a kind of airtight electrode paste and manufacture method thereof, a kind of airtight electrode paste of the present invention, take carbon raw materials as aggregate, take organic compound as binding agent, melt through fragmentation, screening, abrasive dust, batching, binding agent, be dry mixed, wet mixing, draw and stick with paste the operation manufacture such as shaping and form.
Electrode paste producer uses the general raw material such as anthracite, metallurgical coke of forging to prepare electrode paste in the past, though its cost is low, but resistance is higher, add the production cost using producer, though more existing producers have adopted electric calcined anthracite, petroleum coke to be raw material, comparatively traditional production method, make the poor-performing of electrode paste, and unstable product quality, therefore want the performance and the stability that improve electrode paste, need the production method improving electrode paste further.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide field of smelting common electrode material of a kind of with low cost, good stability and preparation method thereof.
Technical scheme of the present invention is:
Field of smelting common electrode material, is prepared from primarily of following raw materials according, is mass parts: electric calcined anthracite 3.5-5 part, after-smithing petroleum coke 2.8-6 part, resin modified asphalt 1.0-1.8 part, attapulgite 0.08-0.12 part, carborundum 0.06-0.15 part, medium temperature coal pitch powder 1.2-1.5 part.
In preferred scheme, electric calcined anthracite 4.0-4.5 part, after-smithing petroleum coke 3.2-5.6 part, resin modified asphalt 1.2-1.6 part, attapulgite 0.09-0.11 part, carborundum 0.08-0.13 part, medium temperature coal pitch powder 1.3-1.4 part.
Be more preferably, electric calcined anthracite 4.25 parts, after-smithing petroleum coke 4.4 parts, resin modified asphalt 1.4 parts, attapulgite 0.10 part, 0.105 part, carborundum, 1.35 parts, medium temperature coal pitch powder.
The preparation method of described field of smelting common electrode material, step is:
(1) by electric calcined anthracite crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) attapulgite and carborundum are sieved rear abrasive dust classification respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) add successively in closed kolleroang according to the order of primary granule material, resin modified asphalt, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder and stir, kneading and compacting.
The preparation method of described field of smelting common electrode material, it is preferred that step (4) feed time is spaced apart 10 ~ 15min(, and feed time is spaced apart 13min).
The preparation method of described field of smelting common electrode material, step (4) reinforced completely after fully to stir 20 ~ 35min(preferred, reinforced completely after fully stir 30min).
The preparation method of described field of smelting common electrode material, step (4) kneading time 60 ~ 80min(is preferred, kneading time 70min).
The preparation method of described field of smelting common electrode material, step (4) electrode paste is shaping at normal temperatures, vacuumizes the easy volatile solvent contained in dry extraction resin.
Field of smelting common electrode lower cost for material provided by the invention, process controllability is good.In addition, excellent results of the present invention also shows: the present invention's made electrode paste compression strength is high, and plasticity is good, and resistivity is low, good thermal shock, and ash content and volatile matter content little, environmentally friendly, be worthy to be popularized.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with embodiment and experimental example, but protection range is not limited thereto.
Embodiment 1 field of smelting common electrode material, is prepared from (every part of 10kg) primarily of following raw materials according: electric calcined anthracite 3.5 parts, after-smithing petroleum coke 2.8 parts, resin modified asphalt 1.0 parts, attapulgite 0.08 part, 0.06 part, carborundum, 1.2 parts, medium temperature coal pitch powder.
The preparation method of above-mentioned field of smelting common electrode material is:
(1) by electric calcined anthracite (reaching carbon product Co., Ltd purchased from Ningxia Huambo) crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke (purchased from Rui Chi carbon product Co., Ltd) is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) abrasive dust classification after attapulgite (purchased from Xuyi Xin Yuan Science and Technology Ltd.) and carborundum (purchased from Anyang County Zhu Chengnai material Co., Ltd) being sieved respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) according to primary granule material, resin modified asphalt (purchased from development zone, Zibo City Yong Li Refractory Co., ltd), secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder (purchased from Handan City through vast and boundless trade Co., Ltd) order add successively in closed kolleroang and stir, each feeding interval time is 10min, feed in raw material completely and fully stir 20min, kneading 60min normal temperature compacted under, vacuumizes the easy volatile solvent contained in dry extraction resin.
Embodiment 2 field of smelting common electrode material, is prepared from (every part of 10kg) primarily of following raw materials according: electric calcined anthracite 5 parts, after-smithing petroleum coke 6 parts, resin modified asphalt 1.8 parts, attapulgite 0.12 part, 0.15 part, carborundum, 1.5 parts, medium temperature coal pitch powder.
The preparation method of field of smelting common electrode material is:
(1) by electric calcined anthracite (reaching carbon product Co., Ltd purchased from Ningxia Huambo) crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke (purchased from Rui Chi carbon product Co., Ltd) is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) abrasive dust classification after attapulgite (purchased from Xuyi Xin Yuan Science and Technology Ltd.) and carborundum (purchased from Anyang County Zhu Chengnai material Co., Ltd) being sieved respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) according to primary granule material, resin modified asphalt (purchased from development zone, Zibo City Yong Li Refractory Co., ltd), secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder (purchased from Handan City through vast and boundless trade Co., Ltd) order add successively in closed kolleroang and stir, each feeding interval time is 15min, feed in raw material completely and fully stir 35min, kneading 80min normal temperature compacted under, vacuumizes the easy volatile solvent contained in dry extraction resin.
Embodiment 3 field of smelting common electrode material, is prepared from (every part of 10kg) primarily of following raw materials according: electric calcined anthracite 4.0 parts, after-smithing petroleum coke 3.2 parts, resin modified asphalt 1.2 parts, attapulgite 0.09 part, 0.08 part, carborundum, 1.3 parts, medium temperature coal pitch powder.
The preparation method of field of smelting common electrode material is:
(1) by electric calcined anthracite (reaching carbon product Co., Ltd purchased from Ningxia Huambo) crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke (purchased from Rui Chi carbon product Co., Ltd) is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) abrasive dust classification after attapulgite (purchased from Xuyi Xin Yuan Science and Technology Ltd.) and carborundum (purchased from Anyang County Zhu Chengnai material Co., Ltd) being sieved respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) according to primary granule material, resin modified asphalt (purchased from development zone, Zibo City Yong Li Refractory Co., ltd), secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder (purchased from Handan City through vast and boundless trade Co., Ltd) order add successively in closed kolleroang and stir, each feeding interval time is 10min, feed in raw material completely and fully stir 20min, kneading 60min normal temperature compacted under, vacuumizes the easy volatile solvent contained in dry extraction resin.
Embodiment 4 field of smelting common electrode material, is prepared from (every part of 10kg) primarily of following raw materials according: electric calcined anthracite 4.5 parts, after-smithing petroleum coke 5.6 parts, resin modified asphalt 1.6 parts, attapulgite 0.11 part, 0.13 part, carborundum, 1.4 parts, medium temperature coal pitch powder.
The preparation method of field of smelting common electrode material is:
(1) by electric calcined anthracite (reaching carbon product Co., Ltd purchased from Ningxia Huambo) crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke (purchased from Rui Chi carbon product Co., Ltd) is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) abrasive dust classification after attapulgite (purchased from Xuyi Xin Yuan Science and Technology Ltd.) and carborundum (purchased from Anyang County Zhu Chengnai material Co., Ltd) being sieved respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) according to primary granule material, resin modified asphalt (purchased from development zone, Zibo City Yong Li Refractory Co., ltd), secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder (purchased from Handan City through vast and boundless trade Co., Ltd) order add successively in closed kolleroang and stir, each feeding interval time is 15min, feed in raw material completely and fully stir 35min, kneading 80min normal temperature compacted under, vacuumizes the easy volatile solvent contained in dry extraction resin.
Embodiment 5 field of smelting common electrode material, is prepared from (every part of 10kg) primarily of following raw materials according: electric calcined anthracite 4.25 parts, after-smithing petroleum coke 4.4 parts, resin modified asphalt 1.4 parts, attapulgite 0.10 part, 0.105 part, carborundum, 1.35 parts, medium temperature coal pitch powder.
The preparation method of field of smelting common electrode material is:
(1) by electric calcined anthracite (reaching carbon product Co., Ltd purchased from Ningxia Huambo) crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke (purchased from Rui Chi carbon product Co., Ltd) is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) abrasive dust classification after attapulgite (purchased from Xuyi Xin Yuan Science and Technology Ltd.) and carborundum (purchased from Anyang County Zhu Chengnai material Co., Ltd) being sieved respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) according to primary granule material, resin modified asphalt (purchased from development zone, Zibo City Yong Li Refractory Co., ltd), secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder (purchased from Handan City through vast and boundless trade Co., Ltd) order add successively in closed kolleroang and stir, each feeding interval time is 13min, feed in raw material completely and fully stir 30min, kneading 70min normal temperature compacted under, vacuumizes the easy volatile solvent contained in dry extraction resin.
The present invention's primary raw material used is as follows:
Electric calcined anthracite: be take high-quality anthracite as raw material, produces through the 2000 DEG C of calcinings of single-phase alternating current forge furnace, effectively can remove moisture, volatile matter, raising density and conductance in process of production, strengthens mechanical strength and anti-oxidant degree.There is the good characteristic of low ash, low-sulfur, low-phosphorous, golf calorific value, high compressive strength.
After-smithing petroleum coke: refer to and green coke is calcined, calcining heat is generally at about 1300 DEG C, the volatile matter of removing petroleum coke as far as possible, thus reduce the hydrogen content of petroleum coke reproduced goods, the degree of graphitization of petroleum coke is improved, thus improve elevated temperature strength and the heat resistance of graphite electrode, improve the conductivity of graphite electrode.
Resin modified asphalt: be that the high molecular polymer such as admixture resin carries out modification to pitch in pitch, or take measures such as pitch mild oxidation processing, makes the performance of pitch or asphalt be improved the asphalt binder made.The cold resistance of pitch, thermal endurance, caking property and air impermeability can be improved with resin modified pitch.
Attapulgite: be a kind of tool chain layer structure containing Shuifu County's zeopan clay mineral.There is unique dispersion, high temperature resistant, anti-good colloidal nature and the higher adsorption bleaching ability such as saline and alkaline, and there is certain plasticity and cohesive force.
Carborundum: be formed by resistance furnace pyrolytic semlting with raw materials such as quartz sand, petroleum coke (or coal tar), wood chips (needing with salt when producing green silicon carbide).Carborundum has corrosion-resistant, high temperature resistant, the characteristic such as intensity is large, heat conductivility is good, shock resistance, can be used for various smelting furnace lining, High-temp. kiln component, carborundum plate, liner plate, strutting piece, saggar, silicon carbide crucible etc.
Medium temperature coal pitch powder: be the residue after coal tar distillation extracts cut, softening point 75-95 DEG C.It, mainly for the manufacture of coating, electrode, pitch coke, asphalt felt etc., also can make the raw material of fuel and pitch carbon black.
The physical and chemical index of test example 1 gained field of smelting of the present invention common electrode material (embodiment 5):
Specify as table 1 about the physical and chemical index of electrode paste with reference in People's Republic of China's iron and steel industry industry standard " electrode paste YBT5215-1996 ".
Table 1 electrode paste national standard
The mensuration of physical and chemical index: assay method is with reference to the assay method of the ash content specified in GB1429-2009, the assay method of the volatile matter specified in GB8720, the assay method of the compression strength specified in GB1431, the assay method of the resistivity specified in GB6717, the assay method of the elongation specified in the assay method of the bulk density specified in GB6154 and YB/T5289-2001.
Result records the physical and chemical index of the made electrode paste of the present invention in table 2.
The physical and chemical index of the made electrode paste of table 2 the present invention
As shown in Table 2, the made electrode paste indices of the present invention all meets national standard reference, and its ash content and resistivity are all starkly lower than the maximum required in national standard, ash content requires 18.5% of maximum lower than national standard, resistivity requires 6.2% of maximum lower than national standard, its compression strength is apparently higher than national standard, exceed national standard and require MIN 45.0%, products made thereby of the present invention is described, there is good stability and crushing resistance, also can reduce the production cost using producer simultaneously, reduce the pollution to environment.
It should be pointed out that embodiment is the more representational example of the present invention, obvious technical scheme of the present invention is not limited to above-described embodiment, can also have a lot of distortion.Those of ordinary skill in the art, with the present invention clear and definite disclosed or according to undoubted the obtaining of the written description of file, the claimed scope of this patent all should be thought.
Claims (8)
1. field of smelting common electrode material, it is characterized in that, be prepared from primarily of following raw materials according, be mass parts: electric calcined anthracite 3.5-5 part, after-smithing petroleum coke 2.8-6 part, resin modified asphalt 1.0-1.8 part, attapulgite 0.08-0.12 part, carborundum 0.06-0.15 part, medium temperature coal pitch powder 1.2-1.5 part.
2. field of smelting common electrode material as claimed in claim 1, is characterized in that, electric calcined anthracite 4.0-4.5 part, after-smithing petroleum coke 3.2-5.6 part, resin modified asphalt 1.2-1.6 part, attapulgite 0.09-0.11 part, carborundum 0.08-0.13 part, medium temperature coal pitch powder 1.3-1.4 part.
3. field of smelting common electrode material as claimed in claim 1, is characterized in that, electric calcined anthracite 4.25 parts, after-smithing petroleum coke 4.4 parts, resin modified asphalt 1.4 parts, attapulgite 0.10 part, 0.105 part, carborundum, 1.35 parts, medium temperature coal pitch powder.
4. the preparation method of the field of smelting common electrode material as described in as arbitrary in claim 1-3, it is characterized in that, step is:
(1) by electric calcined anthracite crushing and classification, wherein granularity 10 ~ 20mm's is primary granule material, and granularity 5 ~ 10mm's is secondary granule material;
(2) after-smithing petroleum coke is sieved classification after abrasive dust, wherein granularity 1 ~ 5mm's is tertiary granule material, and granularity 0.25mm ~ 1mm's is level Four particulate material, and granularity 0.05 ~ 0.25mm's is Pyatyi particulate material;
(3) attapulgite and carborundum are sieved rear abrasive dust classification respectively, wherein granularity 0.05 ~ 0.25mm's is Pyatyi particulate material, and granularity 0 ~ 0.05mm's is six grade particles material;
(4) add successively in closed kolleroang according to the order of primary granule material, resin modified asphalt, secondary granule material, tertiary granule material, level Four particulate material, Pyatyi particulate material, six grade particles material and medium temperature coal pitch powder and stir, kneading and compacting.
5. the preparation method of field of smelting common electrode material as claimed in claim 4, is characterized in that, it is preferred that step (4) feed time is spaced apart 10 ~ 15min(, and feed time is spaced apart 13min).
6. the preparation method of field of smelting common electrode material as claimed in claim 4, is characterized in that, step (4) reinforced completely after fully to stir 20 ~ 35min(preferred, reinforced completely after fully stir 30min).
7. the preparation method of field of smelting common electrode material as claimed in claim 4, is characterized in that, step (4) kneading time 60 ~ 80min(is preferred, kneading time 70min).
8. the preparation method of field of smelting common electrode material as claimed in claim 4, it is characterized in that, step (4) electrode paste is shaping at normal temperatures, vacuumizes the easy volatile solvent contained in dry extraction resin.
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