CN112225576A - Preparation method of graphite electrode beneficial to reducing loss - Google Patents
Preparation method of graphite electrode beneficial to reducing loss Download PDFInfo
- Publication number
- CN112225576A CN112225576A CN202011126651.7A CN202011126651A CN112225576A CN 112225576 A CN112225576 A CN 112225576A CN 202011126651 A CN202011126651 A CN 202011126651A CN 112225576 A CN112225576 A CN 112225576A
- Authority
- CN
- China
- Prior art keywords
- parts
- graphite electrode
- raw materials
- treatment
- graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 86
- 239000010439 graphite Substances 0.000 title claims abstract description 86
- 230000009286 beneficial effect Effects 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011331 needle coke Substances 0.000 claims abstract description 24
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 23
- 239000010426 asphalt Substances 0.000 claims abstract description 22
- 239000002006 petroleum coke Substances 0.000 claims abstract description 22
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 16
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 16
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000292 calcium oxide Substances 0.000 claims abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000002500 ions Chemical class 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 6
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 6
- -1 polyoxyethylene Polymers 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 21
- 238000004898 kneading Methods 0.000 claims description 21
- 239000000047 product Substances 0.000 claims description 20
- 238000005087 graphitization Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 238000004806 packaging method and process Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 13
- 238000012216 screening Methods 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 10
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 239000011592 zinc chloride Substances 0.000 claims description 5
- 235000005074 zinc chloride Nutrition 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
- C04B41/5011—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion
- C04B41/5012—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion chlorides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/20—Arrangements of heating devices
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/407—Copper
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
Abstract
The invention discloses a preparation method of a graphite electrode beneficial to reducing loss, which relates to the technical field of electrode preparation and comprises the following steps: s1, weighing the following raw materials in parts by weight: 30-32 parts of petroleum coke, 20-25 parts of needle coke, 10-12 parts of modified asphalt, 2-3 parts of graphene, 5-7 parts of polyoxyethylene fatty alcohol ether, 2-4 parts of polymethyl methacrylate, 1-3 parts of calcium oxide, 0.5-0.7 part of ferric oxide, 20-30 parts of carbon fiber and 5-8 parts of copper powder, according to the invention, the polymethyl methacrylate and the carbon fiber are added into the raw materials, so that the oxidation resistance of the graphite electrode is improved, the breakage rate of the graphite electrode in use is improved, the step of ion adsorption is added, zinc ions are attached to a dendritic structure formed between the graphene fiber in the graphite electrode and other raw materials, the conductivity of the graphite electrode is effectively improved, the graphite electrode has stable current conductivity, and the strength of the finished graphite electrode is effectively improved due to the addition of the polymethyl methacrylate and the ferric oxide.
Description
Technical Field
The invention relates to the technical field of electrode preparation, in particular to a preparation method of a graphite electrode beneficial to reducing loss.
Background
The graphite electrode is made up by using petroleum coke and needle coke as raw material and modified asphalt as binding agent through the processes of calcining, proportioning, kneading, die pressing, roasting, graphitizing and machining, and is a conductor which can release electric energy in the form of electric arc in electric arc furnace to heat and melt furnace charge, and can be divided into ordinary power, high power and ultrahigh power according to its low mass index.
With the development of science and technology, the current high-capacity and ultrahigh-power arc furnace is rapidly developed, and the quality requirements on large-size and ultrahigh-power graphite electrodes are higher and higher, but the current graphite electrodes are unstable in structure and low in strength and are easily oxidized in a high-temperature environment, so that the graphite electrodes gradually become thinner from the oxidized parts, the abrasion resistance of the electrodes is reduced, the loss is high, the structure is unstable, the performance is reduced, the emission performance and the yield of the graphite electrodes are reduced to a certain degree after the graphite electrodes are subjected to anti-oxidation treatment, the production period and the energy consumption are improved, the existing graphite electrodes are low in hardness, easy to damage and low in compactness, and therefore, a preparation method of the graphite electrodes beneficial to reducing the loss is provided to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a graphite electrode which is beneficial to reducing loss, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a graphite electrode beneficial to reducing loss comprises the following steps:
s1, weighing the following raw materials in parts by weight: 30-32 parts of petroleum coke, 20-25 parts of needle coke, 10-12 parts of modified asphalt, 2-3 parts of graphene, 5-7 parts of polyoxyethylene fatty alcohol ether, 2-4 parts of polymethyl methacrylate, 1-3 parts of calcium oxide, 0.5-0.7 part of ferric oxide, 20-30 parts of carbon fiber and 5-8 parts of copper powder.
S2, first treatment of raw materials: respectively crushing the petroleum coke, the needle coke, the graphene and the carbon fiber in the step S1, and screening for later use;
s3, carrying out secondary treatment on the raw materials: grinding the calcium oxide, the ferric oxide and the copper powder in the step S1 in a ball mill, and screening the ground particles to obtain a required mixture I;
s4, mixing of raw materials: fully mixing the petroleum coke, needle coke, modified asphalt, graphene and carbon fiber which are crushed in the step S2 to prepare a required mixture II, and adding the mixture I and the mixture II prepared in the step S3 into a kneading pot for mixing for later use;
s5, wet mixing treatment: adding the modified asphalt in the step S1 into the kneading pot in the step S4, preheating the modified asphalt to 160-180 ℃, sequentially adding fatty alcohol-polyoxyethylene ether and polymethyl methacrylate into the kneading pot, and wet-mixing for 20-30min to obtain a required mixture;
s6, material molding: adding the mixture prepared in the step S5 into a mold, and carrying out extrusion molding treatment on the mold;
s7, roasting of the semi-finished product: roasting the semi-finished product extruded and shaped in the step S6, automatically heating according to a specific heating curve, namely a roasting curve, naturally cooling after heating is finished, and standing for 60-72 hours to obtain a graphite electrode roasted product;
s8, ion adsorption treatment: completely immersing the graphite electrode roasted product obtained in the step S7 into an ionic solution, standing for 48-72h, and drying after standing;
s9, graphitization treatment: placing the baked product dried in the step S8 into a graphitization furnace, and carrying out graphitization treatment on the baked product according to a power transmission curve to obtain a required graphite electrode;
s10, graphite packaging: and (4) packaging, packaging and warehousing the graphite electrode prepared in the step S9 by using a vacuum bag.
Further optimizing the technical scheme, the petroleum coke, needle coke, graphene and carbon fiber crushed in the step S2 are screened by a screen with the particle size of 30-50 nm.
Further optimizing the technical scheme, the diameter of the particle ground in the step S3 is 0.3-0.5 nm.
Further optimizing the technical scheme, the stirring of the kneading pot in the steps S4 and S5 is completed by driving the stirring shaft and the stirring blades to rotate by the stirring motor, and the rotating speed of the stirring shaft is 700 and 800 r/min.
Further optimizing the technical scheme, in the step S6, the extrusion force is 20-30KN, and the time for extrusion forming is 30-40 min.
Further optimizing the technical scheme, the roasting temperature in the step S7 is 1200-1300 ℃.
Further optimizing the technical scheme, the ionic solution in the step S8 is 5-10mol/L zinc chloride solution.
Further optimizing the technical scheme, in the step S9, the temperature of the graphitization furnace is heated to 3300-.
Further optimizing the technical solution, when the die in step S6 is extruded and shaped, the inner wall of the die needs to be brushed with lubricating oil.
Advantageous effects
Compared with the prior art, the invention provides the preparation method of the graphite electrode which is beneficial to reducing the loss, and the preparation method has the following beneficial effects:
1. according to the preparation method of the graphite electrode beneficial to reduction of loss, the polymethyl methacrylate and the carbon fiber are added into the raw materials, so that the oxidation resistance of the graphite electrode is improved, the breakage rate of the graphite electrode in use is improved, the step of ion adsorption is added, zinc ions are attached to a dendritic structure formed between the graphene fiber inside the graphite electrode and other raw materials, the conductivity of the graphite electrode is effectively improved, the graphite electrode has stable current conduction rate, the strength of the finished graphite electrode is effectively improved due to the addition of the polymethyl methacrylate and the ferric oxide, the graphite electrode has higher strength, and meanwhile, the graphite electrode has high melting point and high elasticity coefficient, good electric thermal conductivity, the anti-consumption performance of the graphite electrode is improved, and the service life and the performance of the graphite electrode are prolonged.
2. According to the preparation method of the graphite electrode beneficial to reducing the loss, after extrusion and shaping are finished, roasting is carried out, temperature rising is automatically carried out according to a specific temperature rising curve, namely a roasting curve, so that the conductivity of the graphite electrode is improved, the proportion of the graphite electrode is changed, the resistivity can be greatly reduced along with the increase of the needle coke amount, the conductivity of the graphite electrode is improved, the uniformity of a mixture can be improved by changing a material mixing process, the strength of the graphite electrode is improved, the conductivity efficiency of the graphite electrode is improved, the compactness of the graphite electrode can be greatly improved by ion adsorption, the hardness of the graphite electrode can be improved, the graphite electrode is difficult to damage, the raw materials are reasonably selected, the preparation process is scientific, and the like, and the graphite electrode with high physical and chemical properties is produced by using the method.
Drawings
Fig. 1 is a schematic flow chart of a method for preparing a graphite electrode beneficial to reducing loss according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1, the present invention discloses a method for preparing a graphite electrode beneficial to reducing loss, comprising the following steps:
s1, weighing the following raw materials in parts by weight: 30 parts of petroleum coke, 20 parts of needle coke, 10 parts of modified asphalt, 2 parts of graphene, 5 parts of polyoxyethylene fatty alcohol ether, 2 parts of polymethyl methacrylate, 1 part of calcium oxide, 0.5 part of ferric oxide, 20 parts of carbon fiber and 5 parts of copper powder.
S2, first treatment of raw materials: respectively crushing the petroleum coke, the needle coke, the graphene and the carbon fiber in the step S1, and screening, wherein the crushed petroleum coke, the needle coke, the graphene and the carbon fiber are screened by a 30nm screen for later use;
s3, carrying out secondary treatment on the raw materials: grinding the calcium oxide, the ferric oxide and the copper powder in the step S1 in a ball mill, and screening the ground particles, wherein the diameter of the ground particles is 0.3nm to obtain a required mixture I;
s4, mixing of raw materials: fully mixing the petroleum coke, needle coke, modified asphalt, graphene and carbon fiber which are crushed in the step S2 to prepare a required mixture II, and adding the mixture I and the mixture II prepared in the step S3 into a kneading pot for mixing for later use;
s5, wet mixing treatment: adding the modified asphalt obtained in the step S1 into the kneading pot obtained in the step S4, preheating the modified asphalt to 160 ℃, sequentially adding fatty alcohol-polyoxyethylene ether and polymethyl methacrylate into the kneading pot, and wet-mixing for 20min, wherein the stirring of the kneading pot is completed by driving a stirring shaft and stirring blades to rotate by a stirring motor, and the rotating speed of the stirring shaft is 700r/min, so as to obtain a required mixture;
s6, material molding: adding the mixture prepared in the step S5 into a die, and carrying out extrusion molding treatment on the die, wherein the extrusion force is 20KN, the extrusion molding time is 30min, and lubricating oil needs to be brushed on the inner wall of the die when the die is in extrusion molding;
s7, roasting of the semi-finished product: roasting the semi-finished product extruded and shaped in the step S6 at 1200 ℃, automatically heating according to a specific heating curve, namely a roasting curve, naturally cooling after heating, and standing for 60 hours to obtain a graphite electrode roasted product;
s8, ion adsorption treatment: completely immersing the graphite electrode roasted product obtained in the step S7 into an ionic solution, standing for 48 hours, and drying after the ionic solution is 5mol/L zinc chloride solution;
s9, graphitization treatment: putting the baked product dried in the step S8 into a graphitization furnace, carrying out graphitization treatment on the baked product according to a power transmission curve, heating the graphitization furnace to 3300 ℃, and controlling the cooling maintenance time to be 300h to obtain a required graphite electrode;
s10, graphite packaging: and (4) packaging, packaging and warehousing the graphite electrode prepared in the step S9 by using a vacuum bag.
Example two: referring to fig. 1, the present invention discloses a method for preparing a graphite electrode beneficial to reducing loss, comprising the following steps:
s1, weighing the following raw materials in parts by weight: 31 parts of petroleum coke, 23 parts of needle coke, 11 parts of modified asphalt, 2.5 parts of graphene, 6 parts of polyoxyethylene fatty alcohol ether, 3 parts of polymethyl methacrylate, 2 parts of calcium oxide, 0.6 part of ferric oxide, 25 parts of carbon fiber and 7 parts of copper powder.
S2, first treatment of raw materials: respectively crushing the petroleum coke, the needle coke, the graphene and the carbon fiber in the step S1, and screening, wherein the crushed petroleum coke, the needle coke, the graphene and the carbon fiber are screened by a screen with the particle size of 40nm for later use;
s3, carrying out secondary treatment on the raw materials: grinding the calcium oxide, the ferric oxide and the copper powder in the step S1 in a ball mill, and screening the ground particles, wherein the diameter of the ground particles is 0.4nm to obtain a required mixture I;
s4, mixing of raw materials: fully mixing the petroleum coke, needle coke, modified asphalt, graphene and carbon fiber which are crushed in the step S2 to prepare a required mixture II, and adding the mixture I and the mixture II prepared in the step S3 into a kneading pot for mixing for later use;
s5, wet mixing treatment: adding the modified asphalt obtained in the step S1 into the kneading pot obtained in the step S4, preheating the modified asphalt to 170 ℃, sequentially adding fatty alcohol-polyoxyethylene ether and polymethyl methacrylate into the kneading pot, and wet-mixing for 25min, wherein the stirring of the kneading pot is completed by driving a stirring shaft and stirring blades to rotate by a stirring motor, and the rotating speed of the stirring shaft is 750r/min, so as to obtain a required mixture;
s6, material molding: adding the mixture prepared in the step S5 into a die, and carrying out extrusion molding treatment on the die, wherein the extrusion force is 25KN, the extrusion molding time is 35min, and lubricating oil needs to be brushed on the inner wall of the die when the die is in extrusion molding;
s7, roasting of the semi-finished product: roasting the semi-finished product extruded and shaped in the step S6, wherein the roasting temperature is 1250 ℃, automatically heating according to a specific heating curve, namely a roasting curve, naturally cooling after heating, and standing for 65 hours to obtain a graphite electrode roasted product;
s8, ion adsorption treatment: completely immersing the graphite electrode roasted product obtained in the step S7 into an ionic solution, standing for 60 hours, and drying after the ionic solution is 8mol/L zinc chloride solution;
s9, graphitization treatment: placing the baked product dried in the step S8 into a graphitization furnace, carrying out graphitization treatment on the baked product according to a power transmission curve, heating the graphitization furnace to 3400 ℃, and controlling the cooling maintenance time to be 310h to obtain a required graphite electrode;
s10, graphite packaging: and (4) packaging, packaging and warehousing the graphite electrode prepared in the step S9 by using a vacuum bag.
Example three: referring to fig. 1, the present invention discloses a method for preparing a graphite electrode beneficial to reducing loss, comprising the following steps:
s1, weighing the following raw materials in parts by weight: 32 parts of petroleum coke, 25 parts of needle coke, 12 parts of modified asphalt, 3 parts of graphene, 7 parts of polyoxyethylene fatty alcohol ether, 4 parts of polymethyl methacrylate, 3 parts of calcium oxide, 0.7 part of ferric oxide, 30 parts of carbon fiber and 8 parts of copper powder.
S2, first treatment of raw materials: respectively crushing the petroleum coke, the needle coke, the graphene and the carbon fiber in the step S1, and screening, wherein the crushed petroleum coke, the needle coke, the graphene and the carbon fiber are screened by a screen with the particle size of 50nm for later use;
s3, carrying out secondary treatment on the raw materials: grinding the calcium oxide, the ferric oxide and the copper powder in the step S1 in a ball mill, and screening the ground particles, wherein the diameter of the ground particles is 0.5nm to obtain a required mixture I;
s4, mixing of raw materials: fully mixing the petroleum coke, needle coke, modified asphalt, graphene and carbon fiber which are crushed in the step S2 to prepare a required mixture II, and adding the mixture I and the mixture II prepared in the step S3 into a kneading pot for mixing for later use;
s5, wet mixing treatment: adding the modified asphalt obtained in the step S1 into the kneading pot obtained in the step S4, preheating the modified asphalt to 180 ℃, sequentially adding fatty alcohol-polyoxyethylene ether and polymethyl methacrylate into the kneading pot, and wet-mixing for 30min, wherein the stirring of the kneading pot is completed by driving a stirring shaft and stirring blades to rotate by a stirring motor, and the rotating speed of the stirring shaft is 800r/min, so as to obtain a required mixture;
s6, material molding: adding the mixture prepared in the step S5 into a die, and carrying out extrusion molding treatment on the die, wherein the extrusion force is 30KN, the extrusion molding time is 40min, and lubricating oil needs to be brushed on the inner wall of the die when the die is in extrusion molding;
s7, roasting of the semi-finished product: roasting the semi-finished product extruded and shaped in the step S6, wherein the roasting temperature is 1300 ℃, automatically heating according to a specific heating curve, namely a roasting curve, naturally cooling after heating, and standing for 72 hours to obtain a graphite electrode roasted product;
s8, ion adsorption treatment: completely immersing the graphite electrode roasted product obtained in the step S7 into an ionic solution, standing for 72 hours, and drying after the ionic solution is 10mol/L zinc chloride solution;
s9, graphitization treatment: placing the baked product dried in the step S8 into a graphitization furnace, carrying out graphitization treatment on the baked product according to a power transmission curve, heating the graphitization furnace to 3500 ℃, and controlling the cooling maintenance time to be 320h to obtain a required graphite electrode;
s10, graphite packaging: and (4) packaging, packaging and warehousing the graphite electrode prepared in the step S9 by using a vacuum bag.
The invention has the beneficial effects that: according to the invention, the polymethyl methacrylate and the carbon fiber are added into the raw materials, so that the oxidation resistance of the graphite electrode is improved, and the breakage rate of the graphite electrode in use is improved; after the extrusion and shaping are finished, roasting is carried out, the temperature rise is automatically carried out according to a specific temperature rise curve, namely a roasting curve, the conductivity of the graphite electrode is improved, the proportion of the graphite electrode is changed, the resistivity can be greatly reduced along with the increase of the amount of needle coke, the conductivity of the graphite electrode is improved, the uniformity of a mixture can be improved by changing a material mixing process, the strength of the graphite electrode is improved, the conductivity efficiency of the graphite electrode is improved, the compactness of the graphite electrode can be greatly improved through ion adsorption, the hardness of the graphite electrode can be improved, the graphite electrode is not easy to damage, the raw materials are reasonably selected, the preparation process is scientific and the like, and the graphite electrode with high physical and chemical properties is produced by using the method and the.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A preparation method of a graphite electrode beneficial to reducing loss is characterized by comprising the following steps:
s1, weighing the following raw materials in parts by weight: 30-32 parts of petroleum coke, 20-25 parts of needle coke, 10-12 parts of modified asphalt, 2-3 parts of graphene, 5-7 parts of polyoxyethylene fatty alcohol ether, 2-4 parts of polymethyl methacrylate, 1-3 parts of calcium oxide, 0.5-0.7 part of ferric oxide, 20-30 parts of carbon fiber and 5-8 parts of copper powder;
s2, first treatment of raw materials: respectively crushing the petroleum coke, the needle coke, the graphene and the carbon fiber in the step S1, and screening for later use;
s3, carrying out secondary treatment on the raw materials: grinding the calcium oxide, the ferric oxide and the copper powder in the step S1 in a ball mill, and screening the ground particles to obtain a required mixture I;
s4, mixing of raw materials: fully mixing the petroleum coke, needle coke, modified asphalt, graphene and carbon fiber which are crushed in the step S2 to prepare a required mixture II, and adding the mixture I and the mixture II prepared in the step S3 into a kneading pot for mixing for later use;
s5, wet mixing treatment: adding the modified asphalt in the step S1 into the kneading pot in the step S4, preheating the modified asphalt to 160-180 ℃, sequentially adding fatty alcohol-polyoxyethylene ether and polymethyl methacrylate into the kneading pot, and wet-mixing for 20-30min to obtain a required mixture;
s6, material molding: adding the mixture prepared in the step S5 into a mold, and carrying out extrusion molding treatment on the mold;
s7, roasting of the semi-finished product: roasting the semi-finished product extruded and shaped in the step S6, automatically heating according to a specific heating curve, namely a roasting curve, naturally cooling after heating is finished, and standing for 60-72 hours to obtain a graphite electrode roasted product;
s8, ion adsorption treatment: completely immersing the graphite electrode roasted product obtained in the step S7 into an ionic solution, standing for 48-72h, and drying after standing;
s9, graphitization treatment: placing the baked product dried in the step S8 into a graphitization furnace, and carrying out graphitization treatment on the baked product according to a power transmission curve to obtain a required graphite electrode;
s10, graphite packaging: and (4) packaging, packaging and warehousing the graphite electrode prepared in the step S9 by using a vacuum bag.
2. The method as claimed in claim 1, wherein the petroleum coke, needle coke, graphene and carbon fiber in step S2 are sieved through a 30-50nm sieve.
3. The method as claimed in claim 1, wherein the particle diameter of the graphite electrode ground in step S3 is 0.3-0.5 nm.
4. The method as claimed in claim 1, wherein the stirring of the kneading pot in steps S4 and S5 is accomplished by a stirring motor driving a stirring shaft and stirring blades to rotate, and the rotation speed of the stirring shaft is 800 r/min.
5. The method for preparing a graphite electrode beneficial to reducing loss according to claim 1, wherein the method comprises the following steps: in the step S6, the extrusion force is 20-30KN, and the time for extrusion shaping is 30-40 min.
6. The method as claimed in claim 1, wherein the temperature of the step S7 is 1200-1300 ℃.
7. A method as claimed in claim 1, wherein the ionic solution in step S8 is 5-10mol/L zinc chloride solution.
8. The method as claimed in claim 1, wherein the step S9 is performed by heating the graphite furnace to 3300-.
9. The method as claimed in claim 1, wherein in step S6, when the mold is shaped by extrusion, a lubricant is applied to the inner wall of the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011126651.7A CN112225576A (en) | 2020-10-20 | 2020-10-20 | Preparation method of graphite electrode beneficial to reducing loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011126651.7A CN112225576A (en) | 2020-10-20 | 2020-10-20 | Preparation method of graphite electrode beneficial to reducing loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112225576A true CN112225576A (en) | 2021-01-15 |
Family
ID=74118251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011126651.7A Pending CN112225576A (en) | 2020-10-20 | 2020-10-20 | Preparation method of graphite electrode beneficial to reducing loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112225576A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584531A (en) * | 2021-09-03 | 2021-11-02 | 河北鸿科碳素有限公司 | Production process of high-oxidation-resistance prebaked anode |
| CN115466121A (en) * | 2022-10-28 | 2022-12-13 | 万基控股集团石墨制品有限公司 | Preparation method of graphite electrode |
| CN116283333A (en) * | 2023-05-18 | 2023-06-23 | 西南交通大学 | Sulfonated graphene reinforced carbon-based composite material and preparation method and application thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097208A (en) * | 2007-06-21 | 2008-01-02 | 复旦大学 | Polymethyl methacryate and carbon nano-tube compound material electric pole and method for making same |
| US20100175506A1 (en) * | 2009-01-14 | 2010-07-15 | Ut-Battelle, Llc | Toughened graphite electrodes for electric arc furnaces |
| CN104085883A (en) * | 2014-07-09 | 2014-10-08 | 深圳市贝特瑞新能源材料股份有限公司 | Artificial graphite negative electrode material for lithium ion battery and preparation method thereof |
| CN107134567A (en) * | 2017-04-24 | 2017-09-05 | 广东烛光新能源科技有限公司 | Silicon-carbon cathode material and preparation method thereof |
| US20170370009A1 (en) * | 2016-06-26 | 2017-12-28 | Nanotek Instruments, Inc. | Electrochemical Production of Graphene Sheets from Coke or Coal |
| CN107694552A (en) * | 2017-11-07 | 2018-02-16 | 西北大学 | A kind of technique that coal-based needle coke is produced as raw material using middle coalite tar pitch |
| CN109665845A (en) * | 2019-02-12 | 2019-04-23 | 合肥炭素有限责任公司 | A kind of preparation method of composite graphite electrode |
| US20190173082A1 (en) * | 2017-12-05 | 2019-06-06 | Nanotek Instruments, Inc. | Method of Producing Anode or Cathode Participates for Alkali Metal Batteries |
| CN109942308A (en) * | 2019-04-26 | 2019-06-28 | 大同宇林德石墨设备股份有限公司 | A kind of high-strength carbon fiber graphite electrode |
| CN110204349A (en) * | 2019-06-26 | 2019-09-06 | 山东晶石大展纳米科技有限公司 | A kind of carbon nano-tube modification enhancing graphite electrode and preparation method thereof |
| CN110330337A (en) * | 2019-07-24 | 2019-10-15 | 成都承新科技有限公司 | A kind of ultra high power graphite electrode and preparation method thereof |
| CN110590363A (en) * | 2019-09-29 | 2019-12-20 | 西姆信息技术服务(大连)有限公司 | Ultrahigh-power graphite electrode and manufacturing method thereof |
| CN110627518A (en) * | 2019-10-29 | 2019-12-31 | 大同通扬碳素有限公司 | Preparation method of high-strength composite graphite electrode |
| CN110668837A (en) * | 2019-10-29 | 2020-01-10 | 大同通扬碳素有限公司 | Preparation method of low-loss graphite electrode |
| CN111018554A (en) * | 2019-11-22 | 2020-04-17 | 大同新成新材料股份有限公司 | Method for preparing ultrahigh-power graphite electrode by using graphene |
| CN210781428U (en) * | 2019-10-29 | 2020-06-16 | 大同通扬碳素有限公司 | High-strength graphite electrode |
| US20200313186A1 (en) * | 2019-03-29 | 2020-10-01 | Ningde Amperex Technology Limited | Electrode and electrochemical device including the same |
-
2020
- 2020-10-20 CN CN202011126651.7A patent/CN112225576A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097208A (en) * | 2007-06-21 | 2008-01-02 | 复旦大学 | Polymethyl methacryate and carbon nano-tube compound material electric pole and method for making same |
| US20100175506A1 (en) * | 2009-01-14 | 2010-07-15 | Ut-Battelle, Llc | Toughened graphite electrodes for electric arc furnaces |
| CN104085883A (en) * | 2014-07-09 | 2014-10-08 | 深圳市贝特瑞新能源材料股份有限公司 | Artificial graphite negative electrode material for lithium ion battery and preparation method thereof |
| US20170370009A1 (en) * | 2016-06-26 | 2017-12-28 | Nanotek Instruments, Inc. | Electrochemical Production of Graphene Sheets from Coke or Coal |
| CN107134567A (en) * | 2017-04-24 | 2017-09-05 | 广东烛光新能源科技有限公司 | Silicon-carbon cathode material and preparation method thereof |
| CN107694552A (en) * | 2017-11-07 | 2018-02-16 | 西北大学 | A kind of technique that coal-based needle coke is produced as raw material using middle coalite tar pitch |
| US20190173082A1 (en) * | 2017-12-05 | 2019-06-06 | Nanotek Instruments, Inc. | Method of Producing Anode or Cathode Participates for Alkali Metal Batteries |
| CN109665845A (en) * | 2019-02-12 | 2019-04-23 | 合肥炭素有限责任公司 | A kind of preparation method of composite graphite electrode |
| US20200313186A1 (en) * | 2019-03-29 | 2020-10-01 | Ningde Amperex Technology Limited | Electrode and electrochemical device including the same |
| CN109942308A (en) * | 2019-04-26 | 2019-06-28 | 大同宇林德石墨设备股份有限公司 | A kind of high-strength carbon fiber graphite electrode |
| CN110204349A (en) * | 2019-06-26 | 2019-09-06 | 山东晶石大展纳米科技有限公司 | A kind of carbon nano-tube modification enhancing graphite electrode and preparation method thereof |
| CN110330337A (en) * | 2019-07-24 | 2019-10-15 | 成都承新科技有限公司 | A kind of ultra high power graphite electrode and preparation method thereof |
| CN110590363A (en) * | 2019-09-29 | 2019-12-20 | 西姆信息技术服务(大连)有限公司 | Ultrahigh-power graphite electrode and manufacturing method thereof |
| CN110627518A (en) * | 2019-10-29 | 2019-12-31 | 大同通扬碳素有限公司 | Preparation method of high-strength composite graphite electrode |
| CN110668837A (en) * | 2019-10-29 | 2020-01-10 | 大同通扬碳素有限公司 | Preparation method of low-loss graphite electrode |
| CN210781428U (en) * | 2019-10-29 | 2020-06-16 | 大同通扬碳素有限公司 | High-strength graphite electrode |
| CN111018554A (en) * | 2019-11-22 | 2020-04-17 | 大同新成新材料股份有限公司 | Method for preparing ultrahigh-power graphite electrode by using graphene |
Non-Patent Citations (2)
| Title |
|---|
| 李平等: "改进石墨电极质量与降低电极消耗的探讨", 《炭素技术》 * |
| 袁哲俊等: "《纳米科学技术及应用》", 30 September 2019, 哈尔滨工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584531A (en) * | 2021-09-03 | 2021-11-02 | 河北鸿科碳素有限公司 | Production process of high-oxidation-resistance prebaked anode |
| CN115466121A (en) * | 2022-10-28 | 2022-12-13 | 万基控股集团石墨制品有限公司 | Preparation method of graphite electrode |
| CN116283333A (en) * | 2023-05-18 | 2023-06-23 | 西南交通大学 | Sulfonated graphene reinforced carbon-based composite material and preparation method and application thereof |
| CN116283333B (en) * | 2023-05-18 | 2023-08-04 | 西南交通大学 | Sulfonated graphene reinforced carbon-based composite material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112225576A (en) | Preparation method of graphite electrode beneficial to reducing loss | |
| CN1933037B (en) | Method for producing copper alloy contact wire with excellent comprehensive performance | |
| CN102034561B (en) | Carbon base sliding block material for track vehicle and preparation method thereof | |
| CN103276235B (en) | Method for preparing superfine AgSnO2 doped electrical contact material by high energy ball milling method | |
| CN109873152A (en) | A kind of lithium ion battery graphene-silicon substrate composite negative pole material and preparation method thereof | |
| CN107140984A (en) | The manufacture method of disposal molding graphite crucible | |
| KR20190019430A (en) | Method for manufacturing negative electrode active material for rechargeable lithium battery, and rechargeable lithium battery including the same | |
| CN108358638A (en) | A kind of metal-impregnated carbon slide preparation process | |
| JP7471303B2 (en) | Negative electrode active material for lithium secondary battery and method for producing same | |
| CN105967718B (en) | The graphite anode for magnesium electrolysis of resistance to high current and its preparation process | |
| CN105130436B (en) | A kind of high resistivity carbon black base electrographite brush material preparation method | |
| CN108101042A (en) | A kind of production technology of lithium battery graphite cathode material | |
| CN102779987A (en) | Novel high-rate modified carbon composite material for electrombiles and preparing method thereof | |
| KR20190054045A (en) | Method for manufacturing negative electrode active material for rechargeable lithium battery, and rechargeable lithium battery including the same | |
| CN114213127A (en) | Preparation method of graphite crucible | |
| CN115347176A (en) | Graphite-based composite negative electrode material and preparation method and application thereof | |
| CN102623112B (en) | Preparation method for inorganic composite ceramic wiring terminal | |
| CN111118332A (en) | Dynamic internal oxidation method for silver-based metal oxide electrical contact material | |
| CN109128185A (en) | A kind of novel electric locomotive powder metallurgy carbon draw runner and preparation method thereof | |
| CN109079144A (en) | A kind of copper-base pantograph carbon slipper and preparation method thereof | |
| CN108610082A (en) | A kind of preparation process of fibre reinforced pantograph carbon slide | |
| CN219156517U (en) | Device for preparing artificial graphite negative electrode material for lithium ion battery | |
| CN102002621B (en) | Carbon-based composite material for sliding block of current collector and preparation method thereof | |
| CN114685186A (en) | Modified carbon fiber, modified carbon graphite material and preparation method thereof | |
| CN110627518A (en) | Preparation method of high-strength composite graphite electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
|
| RJ01 | Rejection of invention patent application after publication |