CN109942308A - A kind of high-strength carbon fiber graphite electrode - Google Patents
A kind of high-strength carbon fiber graphite electrode Download PDFInfo
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- CN109942308A CN109942308A CN201910344301.9A CN201910344301A CN109942308A CN 109942308 A CN109942308 A CN 109942308A CN 201910344301 A CN201910344301 A CN 201910344301A CN 109942308 A CN109942308 A CN 109942308A
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Abstract
The invention discloses a kind of high-strength carbon fiber graphite electrodes, it is related to graphite electrode preparation technical field, the high-strength carbon fiber graphite electrode includes following materials in percentage by mass: the Fushun 60-68% coke, 10-15% needle coke, 15-23% pitch, 2-6% iron oxide red, 0.02-0.06% carbon fiber.This preparation method obtains graphite electrode after dry-mixed, wet mixing, molding, roasting, graphitization.The physical and chemical index for effectively raising graphite electrode reduces the generation of electrode fracture accident, improves the service performance of electrode.
Description
Technical field
The present invention relates to graphite electrode preparation technical fields, particularly relate to a kind of high-strength carbon fiber graphite electrode.
Background technique
Graphite electrode is essential conduction consumable material in metallurgical process, is the bridge that electric energy is converted to thermal energy in metallurgy
Beam, while being to influence smelting process parameter, one of limit product yield and quality, principal element of power consumption again.According to statistics, normally
Under service condition, the graphite electrode rate of fractureing is about 1% or so, and direct economic loss caused by fractureing once is about 60,000 yuan.
The characteristic index of Quality of Graphite Electrode: bulk density, resistivity, thermal expansion coefficient, ash content, flexural strength etc..Electricity
Pole tension, flexural strength embody electrode and resist external impacts and the power of itself thermal vibration ability.The flexural strength of reinforcement can
It is effectively reduced the generation of electrode fracture accident, improves the service performance of electrode.
In order to improve the service performance of graphite electrode, how research will pre-process Carbon fibe and effectively joins graphite electrode
In.The additional proportion of Carbon fibe is determined by a series of experiments, adding manner, the parameters such as time are added, and ensures Carbon fibe in electricity
Effectively disperse in extremely.By fiber reinforcement, pole strength is made to improve 10% or so.
Summary of the invention
The purpose of the present invention is to provide a kind of high-strength carbon fiber graphite electrode, for reduce graphite electrode fracture rate and
Improve every physical and chemical index of graphite electrode.
To achieve the above object, the invention provides the following technical scheme: under a kind of high-strength carbon fiber graphite electrode includes
Column materials in percentage by mass: the Fushun 60-68% coke, 10-15% needle coke, 15-23% pitch, 2-6% iron oxide red, 0.02-
0.06% carbon fiber.
Further preferably, the high-strength carbon fiber graphite electrode includes that following materials in percentage by mass 66.96% is comforted
Along coke, 12% needle coke, 19% pitch, 2% iron oxide red, 0.040% carbon fiber.
Wherein, the Fushun coke grain diameter is in 0-6mm, and needle coke particles partial size is between 0-4mm.
Preferably, the pitch is medium temperature modified coal tar pitch.
Preferably, the specification of the carbon fiber is T300,12K, length 6mm, and at the chemical gaseous phase deposition of progress 10h
Manage obtained carbon fiber.
A kind of preparation process of high-strength carbon fiber graphite electrode are as follows: Step 1: ingredient, according to high-strength carbon fiber graphite
Electrode quality percentage raw material carries out ingredient；
Step 2: each raw material is mixed into carry out kneading, wherein the dry-mixed time 50 minutes, temperature >=110 DEG C；It is wet
It does time 40 minutes, temperature is at 160-170 DEG C, and cool material temperature degree is at 125-133 DEG C；
Step 3: carrying out vacuumize process in mixing process, the absolute value of vacuum degree is not less than 0.076MPa；
Step 4: 204-216 DEG C of the mouthpiece temperature of control material room, 165-170 DEG C of nozzle type temperature, preload pressure 25MPa are squeezed
Pressure pressure 6.5-9MPa；
Step 5: carrying out forming processes using 1500T press after carbon fiber is added, thickener is packed into 1500T press, press
Vacuumize process is carried out at 120 DEG C of temperature or more, vacuum degree≤22mmHg makes firm by ramming at 1200 tons and makes firm by ramming under pressure and keep 1
Minute, it is squeezed with the extrusion speed of 120-140mm/min, then shear, obtains raw product, according to spy after raw product is roasted
Fixed electrode process curve, which carries out graphitization processing, can be obtained finished product.
Compared with prior art, beneficial effects of the present invention are as follows: this preparation method passes through dry-mixed, wet mixing, molding, roasting
It burns, obtain graphite electrode after graphitization.The physical and chemical index for effectively raising graphite electrode reduces the hair of electrode fracture accident
It is raw, improve the service performance of electrode.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction in the embodiment of the present invention, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
A kind of preparation process of high-strength carbon fiber graphite electrode are as follows: Step 1: ingredient, according to high-strength carbon fiber graphite
Electrode quality percentage raw material carries out ingredient；
Step 2: each raw material is mixed into carry out kneading, wherein the dry-mixed time 50 minutes, temperature >=110 DEG C；It is wet
It does time 40 minutes, temperature is at 160-170 DEG C, and cool material temperature degree is at 125-133 DEG C；
Step 3: carrying out vacuumize process in mixing process, the absolute value of vacuum degree is not less than 0.076MPa；
Step 4: 204-216 DEG C of the mouthpiece temperature of control material room, 165-170 DEG C of nozzle type temperature, preload pressure 25MPa are squeezed
Pressure pressure 6.5-9MPa；
Step 5: forming processes are carried out using 1500T press after carbon fiber is added, wherein 4 groups of carbon fiber dimensional ratio point is added,
Wherein A group carbon fiber 0%, B group carbon fiber 0.02%, C group carbon fiber 0.04%, D group carbon fiber 0.06%.Thickener is packed into
1500T press, press carry out vacuumize process at 120 DEG C of temperature or more, and vacuum degree≤22mmHg makes pressure firm by ramming at 1200 tons
Under make firm by ramming and kept for 1 minute, squeezed with the extrusion speed of 120-140mm/min, then shear, obtain raw product, made raw
Carrying out graphitization processing according to special electrodes process curve after product roasting can be obtained finished product.Manufactured graphite electrode finished product is as follows
Shown in table 1
Influence of the 1 carbon fiber additional amount of table to electrode physical and chemical index
As it can be seen from table 1 the physicochemical property of C group is best, carbon fiber additional amount is 0.040%.
It can be seen that the graphite electrode of the invention physical and chemical index after additional amount is 0.040% carbon fiber is most significant.
Embodiment 1:
A kind of high-strength carbon fiber graphite electrode: matched according to high-strength carbon fiber Quality of Graphite Electrode percentage raw material
Material；66.98% Fushun coke, 12% needle coke, 19% pitch, 2% iron oxide red, 0.020% carbon fiber, raw material by dry-mixed, wet mixing,
Graphite electrode is obtained after molding, roasting, graphitization.The specification of the carbon fiber is T300,12K, length 6mm, and carries out 10h's
The carbon fiber that chemical gaseous phase deposition is handled.
Embodiment 2:
A kind of high-strength carbon fiber graphite electrode: matched according to high-strength carbon fiber Quality of Graphite Electrode percentage raw material
Material；66.96% Fushun coke, 12% needle coke, 19% pitch, 2% iron oxide red, 0.040% carbon fiber, raw material by dry-mixed, wet mixing,
Graphite electrode is obtained after molding, roasting, graphitization.The specification of the carbon fiber is T300,12K, length 6mm, and carries out 10h's
The carbon fiber that chemical gaseous phase deposition is handled.
Embodiment 3:
A kind of high-strength carbon fiber graphite electrode: matched according to high-strength carbon fiber Quality of Graphite Electrode percentage raw material
Material；66.94% Fushun coke, 12% needle coke, 19% pitch, 2% iron oxide red, 0.060% carbon fiber, raw material by dry-mixed, wet mixing,
Graphite electrode is obtained after molding, roasting, graphitization.The specification of the carbon fiber is T300,12K, length 6mm, and carries out 10h's
The carbon fiber that chemical gaseous phase deposition is handled.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of high-strength carbon fiber graphite electrode, it is characterised in that: the high-strength carbon fiber graphite electrode includes following
Materials in percentage by mass: the Fushun 60-68% coke, 10-15% needle coke, 15-23% pitch, 2-6% iron oxide red, 0.02-0.06%
Carbon fiber.
2. a kind of high-strength carbon fiber graphite electrode according to claim 1, it is characterised in that: the high-intensitive carbon fiber
Tie up graphite electrode include following materials in percentage by mass: 66.96% Fushun coke, 12% needle coke, 19% pitch, 2% iron oxide red,
0.040% carbon fiber.
3. a kind of high-strength carbon fiber graphite electrode according to claim 1, it is characterised in that: the Fushun coke particle
Partial size is in 0-6mm, and needle coke particles partial size is between 0-4mm.
4. a kind of high-strength carbon fiber graphite electrode according to claim 1, it is characterised in that: the pitch changes for medium temperature
Matter pitch.
5. a kind of high-strength carbon fiber graphite electrode according to claim 1, it is characterised in that: the specification of the carbon fiber
The carbon fiber handled for the chemical gaseous phase deposition of T300,12K, length 6mm, and progress 10h.
6. a kind of preparation process of high-strength carbon fiber graphite electrode, it is characterised in that specific preparation step are as follows: Step 1: matching
Material carries out ingredient according to high-strength carbon fiber Quality of Graphite Electrode percentage raw material；
Step 2: each raw material is mixed into carry out kneading, wherein the dry-mixed time 50 minutes, temperature >=110 DEG C；When wet mixing
Between 40 minutes, temperature is at 160-170 DEG C, and cool material temperature degree is at 125-133 DEG C；
Step 3: carrying out vacuumize process in mixing process, the absolute value of vacuum degree is not less than 0.076MPa；
Step 4: 204-216 DEG C of the mouthpiece temperature of control material room, 165-170 DEG C of nozzle type temperature, preload pressure 25MPa squeeze pressure
Power 6.5-9MPa；
Step 5: carrying out forming processes using 1500T press after carbon fiber is added, thickener is packed into 1500T press, press is in temperature
120 DEG C of degree or more carries out vacuumize process, and vacuum degree≤22mmHg makes firm by ramming at 1200 tons and makes firm by ramming and kept for 1 minute under pressure,
It is squeezed, then is sheared with the extrusion speed of 120-140mm/min, obtain raw product, according to specific electricity after raw product is roasted
Pole process curve, which carries out graphitization processing, can be obtained finished product.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225576A (en) * | 2020-10-20 | 2021-01-15 | 大同通扬碳素有限公司 | Preparation method of graphite electrode beneficial to reducing loss |
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| CN105967718A (en) * | 2016-07-08 | 2016-09-28 | 南通扬子碳素股份有限公司 | Graphite anode for heavy current resistant magnesium electrolysis and preparation process thereof |
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| CN105967718A (en) * | 2016-07-08 | 2016-09-28 | 南通扬子碳素股份有限公司 | Graphite anode for heavy current resistant magnesium electrolysis and preparation process thereof |
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| CN108264367A (en) * | 2017-12-22 | 2018-07-10 | 中国平煤神马集团开封炭素有限公司 | A kind of enhancing Delanium connector |
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| CN112225576A (en) * | 2020-10-20 | 2021-01-15 | 大同通扬碳素有限公司 | Preparation method of graphite electrode beneficial to reducing loss |
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| CB02 | Change of applicant information |
Address after: 030000 Huatun Township, Huatun Village, Xinrong District, Datong City, Shanxi Province Applicant after: Datong Yulin De Graphite New Materials Co., Ltd. Address before: 030000 Huatun Township, Huatun Village, Xinrong District, Datong City, Shanxi Province Applicant before: Datong Linde graphite equipment Limited by Share Ltd |
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Application publication date: 20190628 |