CN107140984A - The manufacture method of disposal molding graphite crucible - Google Patents

The manufacture method of disposal molding graphite crucible Download PDF

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Publication number
CN107140984A
CN107140984A CN201710328274.7A CN201710328274A CN107140984A CN 107140984 A CN107140984 A CN 107140984A CN 201710328274 A CN201710328274 A CN 201710328274A CN 107140984 A CN107140984 A CN 107140984A
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graphite
duration
temperature rise
kneading
rise speed
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李伟
邱庭举
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Jilin Science And Engineering Carbon Industry Co Ltd
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Jilin Science And Engineering Carbon Industry Co Ltd
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    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/522—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
    • 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
    • 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
    • C04B2235/6562—Heating rate
    • 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

Abstract

A kind of manufacture method of disposal molding graphite crucible, it is characterised in that comprise the following steps：1st, dispensing：Graphite comminution into graphite powder mass percent be 70% 90%, medium temperature coal pitch mass percent is 10% 30%；2nd, kneading；3rd, die mould；4th, it is calcined；5th, process.The topmost raw material that the present invention is used is broken for graphite; belong to the waste material that electrode production is got off, belong to the recycling to waste, the product cost of average each same specification is low 800 1000 yuan; not only the energy had been saved but also had protected environment, while reducing graphite crucible manufacturing cost.The crucible that the present invention is produced with conventional graphite electrodes is compared, reduce dipping, graphitization twice pollution environment and the process for extremely consuming the energy, compare the production cycle with graphite electrode crucible and averagely shorten 30 40 days, production efficiency is greatly improved while to energy-saving and emission-reduction.The graphite crucible of technical solution of the present invention production, avoids the longitudinal direction arrangement of particles of aggregates in pressing process, and product structure is presented isotropism, serves the effect of antiseep, and precious metal is met well and smelts use requirement.

Description

The manufacture method of disposal molding graphite crucible
Technical field
The invention belongs to graphite crucible manufacturing technology field, and in particular to utilize the graphite earthenware of recycled graphite disposal molding Crucible manufacture method.
Background technology
Because graphite has a characteristic such as high temperature resistant, anti-oxidant, stable chemical performance, the vessels crucible made with graphite, extensively It is general to need the industry of high-temperature heat treatment applied to purification, rare earth melting, precious metal melting of cathode of lithium battery powder etc..
At present, the mode of manufacture graphite crucible is typically to be formed with the graphite electrode stock of high-quality is machined.Graphite There are the following problems for electrode machining production crucible method：
1st, the crucible processed with artificial graphite electrode needs all to machine away the core of electrode, and yield only has 20-30%, material Material wastes very big, and production cost is high, is unfavorable for crucible down-stream enterprise and largely uses.
2nd, limited by electrode moulding mode and formula, the crucible processed with artificial graphite electrode, its product structure is presented Anisotropy, physical index existing defects, quality is unstable.When being particularly used for precious metal smelting, crucible seepage is serious, past It is past to meet use requirement.
3rd, production graphite electrode needs the calcined coke of coal measures or petroleum, and both to have polluted environment same for these burnt manufacturing processes When have higher cost again, graphitizing process consumption per ton can about 6000kw.h or so electricity, resource, energy waste are serious.
4th, the manufacturing cycle of graphite electrode production method is long, low production efficiency, it is impossible to meet the demand of user.
The content of the invention
It is an object of the invention to provide a kind of manufacture method of disposal molding graphite crucible, got off using electrode production Waste material, has good thermal shock resistance, ablation property, leak resistance and machinery strong using one-step moulding method production is a kind of The high-quality graphite crucible of degree, to meet the purification of cathode of lithium battery powder and the requirement of smelting industry.
To achieve these goals, the present invention provides a kind of manufacture method of disposal molding graphite crucible, and its feature exists In comprising the following steps：
1st, dispensing：Graphite comminution into graphite powder mass percent be 70%-90%, medium temperature coal pitch mass percent is 10%-30%；
2nd, kneading；
3rd, die mould；
4th, it is calcined；
5th, process.
The broken real density of described graphite is 2.13g/cm3, ash content is 0.03%, and volatilization is divided into 0.22%, and moisture is 0.09%；Medium temperature coal pitch ash content is 0.20%, and volatilization is divided into 64.2%, and moisture is 0.06%.
The percent of pass that described graphite powder purity is sieved with 200 mesh international standard sieves is 80 ± 5%.
Described graphite Powder Particle Size mass percent composition is as follows：
The graphite powder 2%-4% of 1mm granularities；
The graphite powder 37%-43% of 0.5-0.15 granularity；
The graphite powder 37%-43% of -0.075 granularity；
The graphite powder 17%-23% of other granularities.
Described step 3 kneading is to pour ingredients into be stirred in kneading pot, and kneading pot itself is carried out outer by conduction oil Portion is heated, and inside has reamer to carry out material stirring, kneading pot heat conductive oil inlet temperature：It is 230-233 DEG C, lower to pitch in kneading pot 162-165 DEG C of temperature, the dry-mixed time of kneading：40 minutes, 118-126 DEG C of temperature；The wet mixing time of kneading：45 minutes, temperature 162-168℃。
Described step 4 die mould is to pour into the thickener after kneading in container molding, by forcing press by thickener in shaping Disposable in container to be pressed into crucible, the pressure of making firm by ramming of die mould is 20Mpa, and briquetting pressure 20Mpa, the press time is 4 minutes.
Described step 5 roasting is that die mould green compact are fitted into industrial ring-form calcining furnace, in the case of reducing atmosphere, is pressed Heating curve is progressively heated, 150-350 DEG C, 4.4 DEG C/h of temperature rise speed, duration 45h；350-400 DEG C, temperature rise speed 1.7 DEG C/h, duration 30h, 400-500 DEG C, 1.25 DEG C/h of temperature rise speed, duration 80h, 500-600 DEG C, temperature rise speed 1.8 DEG C/h, duration 57h, 600-700 DEG C, 3.8 DEG C/h of temperature rise speed, duration 27h, 700-800 DEG C, temperature rise speed 5.0 DEG C/h, duration 20h, 800-1000 DEG C, 8.0 DEG C/h of temperature rise speed, duration 25h, 1000-1200 DEG C, temperature rise speed 8.3 DEG C/h, duration 20h, 1200 DEG C of retention time 20h.
Beneficial effect of the present invention：
1st, the topmost raw material that the present invention is used is broken for graphite, belongs to the waste material that electrode production is got off, belongs to waste Recycling, the low 800-1000 members of product cost of average each same specification had not only saved the energy have but also protected environment, simultaneously drop Low graphite crucible manufacturing cost.
2nd, the present invention with conventional graphite electrodes produce crucible compare, reduce dipping, graphitization twice pollute environment and The process for extremely consuming the energy, compares the production cycle with graphite electrode crucible and averagely shortens 30-40 days, while to energy-saving and emission-reduction Greatly improve production efficiency.
3rd, the graphite crucible of technical solution of the present invention production, avoids the longitudinal direction arrangement of particles of aggregates in pressing process, Isotropism is presented in product structure, serves the effect of antiseep, and precious metal is met well and smelts use requirement.
Embodiment
Embodiment 1
The manufacture method of disposal molding graphite crucible of the present invention, comprises the following steps：
A, raw material prepare：Graphite is broken, real density 2.13g/cm3, ash content 0.03%, volatile matter 0.22%, moisture 0.09%； Medium temperature coal pitch, ash content 0.20%, volatile matter 64.2%, moisture 0.06%；
B, dispensing：Using ball mill by graphite comminution into graphite powder, mass percent is 80%, and purity is international with 200 mesh The percent of pass that standard screen is sieved is 80%；
Medium temperature coal pitch mass percent is 20%；
Graphite Powder Particle Size mass percent composition is as follows：
The graphite powder 3% of 1mm granularities；
The graphite powder 39% of 0.5-0.15 granularity；
The graphite powder 40% of -0.075 granularity；
The graphite powder 18% of other granularities.
C, kneading：The dispensing of classification is poured into and is stirred in kneading pot, kneading pot itself carries out outside add by conduction oil Heat, inside has reamer to carry out material stirring, kneading pot heat conductive oil inlet temperature：It is 233 DEG C, lower to asphalt temperature 165 in kneading pot DEG C, the dry-mixed time of kneading：40 minutes, 126 DEG C of temperature；The wet mixing time of kneading：45 minutes, 168 DEG C of temperature；
D, die mould：Thickener after kneading is poured into container molding, by forcing press by thickener in container molding it is disposable Crucible is pressed into, the pressure of making firm by ramming of die mould is 20Mpa, and briquetting pressure 20Mpa, the press time is 4 minutes；
E, roasting：Die mould green compact are fitted into industrial ring-form calcining furnace, in the case of reducing atmosphere, by heating curve by Step heating, 150-350 DEG C, 4.4 DEG C/h of temperature rise speed, duration 45h；350-400 DEG C, 1.7 DEG C/h of temperature rise speed, continue when Between 30h, 400-500 DEG C, 1.25 DEG C/h of temperature rise speed, duration 80h, 500-600 DEG C, 1.8 DEG C/h of temperature rise speed, continue when Between 57h, 600-700 DEG C, 3.8 DEG C/h of temperature rise speed, duration 27h, 700-800 DEG C, 5.0 DEG C/h of temperature rise speed, continue when Between 20h, 800-1000 DEG C, 8.0 DEG C/h of temperature rise speed, duration 25h, 1000-1200 DEG C, 8.3 DEG C/h of temperature rise speed, continue Time 20h, 1200 DEG C of retention time 20h；
F, processing：Product cooling is to after room temperature, clearing up surface inserts, and the processing drawing provided according to client, processing Into corresponding size.
Embodiment 2
The manufacture method of disposal molding graphite crucible of the present invention, comprises the following steps：
A, raw material prepare：Graphite is broken, real density:2.14g/cm3, ash content:0.03%, volatile matter:0.21%, moisture: 0.07%；Medium temperature coal pitch, ash content:0.19%, volatile matter:63.2%, moisture:0.05%；
B, dispensing：Using ball mill by graphite comminution into graphite powder, mass percent is 90%, and graphite powder purity uses 200 The percent of pass that mesh international standard sieves is sieved is 85%；
Medium temperature coal pitch mass percent is 10%；
Described graphite Powder Particle Size mass percent composition is as follows：
The graphite powder 2% of 1mm granularities；
The graphite powder 37% of 0.5-0.15 granularity；
The graphite powder 38% of -0.075 granularity；
The graphite powder 23% of other granularities；
C, kneading：The dispensing of classification is poured into and is stirred in kneading pot, kneading pot itself carries out outside add by conduction oil Heat, inside has reamer to carry out material stirring, kneading pot heat conductive oil inlet temperature：It is 230 DEG C, lower to asphalt temperature 162 in kneading pot DEG C, the dry-mixed time of kneading：40 minutes, 118 DEG C of temperature；The wet mixing time of kneading：45 minutes, 162 DEG C of temperature；
D, die mould：Thickener after kneading is poured into container molding, by forcing press by thickener in container molding it is disposable Crucible is pressed into, the pressure of making firm by ramming of die mould is 20Mpa, and briquetting pressure 20Mpa, the press time is 4 minutes；
E, roasting：Die mould green compact are fitted into industrial ring-form calcining furnace, in the case of reducing atmosphere, by heating curve by Step heating, 150-350 DEG C, 4.4 DEG C/h of temperature rise speed, duration 45h；350-400 DEG C, 1.7 DEG C/h of temperature rise speed, continue when Between 30h, 400-500 DEG C, 1.25 DEG C/h of temperature rise speed, duration 80h, 500-600 DEG C, 1.8 DEG C/h of temperature rise speed, continue when Between 57h, 600-700 DEG C, 3.8 DEG C/h of temperature rise speed, duration 27h, 700-800 DEG C, 5.0 DEG C/h of temperature rise speed, continue when Between 20h, 800-1000 DEG C, 8.0 DEG C/h of temperature rise speed, duration 25h, 1000-1200 DEG C, 8.3 DEG C/h of temperature rise speed, continue Time 20h, 1200 DEG C of retention time 20h；
F, processing：Product cooling is to after room temperature, clearing up surface inserts, and the processing drawing provided according to client, processing Into corresponding size.
Embodiment 3
The manufacture method of disposal molding graphite crucible of the present invention, comprises the following steps：
A, raw material prepare：Graphite is broken, density:2.14g/cm3, ash content:0.03%, volatile matter:0.20%, moisture: 0.07%；Medium temperature coal pitch, ash content:0.19%, volatile matter:63.5%, moisture:0.04%；
B, dispensing：Using ball mill by graphite comminution into graphite powder, mass percent is 70%, and graphite powder purity uses 200 The percent of pass that mesh international standard sieves is sieved is 75%；
Medium temperature coal pitch mass percent is 30%；
Described graphite Powder Particle Size mass percent composition is as follows：
The graphite powder 4% of 1mm granularities；
The graphite powder 42% of 0.5-0.15 granularity；
The graphite powder 37% of -0.075 granularity；
The graphite powder 17% of other granularities；
C, kneading：The dispensing of classification is poured into and is stirred in kneading pot, kneading pot itself carries out outside add by conduction oil Heat, inside has reamer to carry out material stirring, kneading pot heat conductive oil inlet temperature：It is 230 DEG C, lower to asphalt temperature 163 in kneading pot DEG C, the dry-mixed time of kneading：40 minutes, 124 DEG C of temperature；The wet mixing time of kneading：45 minutes, 165 DEG C of temperature；
D, die mould：Thickener after kneading is poured into container molding, by forcing press by thickener in container molding it is disposable Crucible is pressed into, the pressure of making firm by ramming of die mould is 20Mpa, and briquetting pressure 20Mpa, the press time is 4 minutes；
E, roasting：Die mould green compact are fitted into industrial ring-form calcining furnace, in the case of reducing atmosphere, by heating curve by Step heating, 150-350 DEG C, 4.4 DEG C/h of temperature rise speed, duration 45h；350-400 DEG C, 1.7 DEG C/h of temperature rise speed, continue when Between 30h, 400-500 DEG C, 1.25 DEG C/h of temperature rise speed, duration 80h, 500-600 DEG C, 1.8 DEG C/h of temperature rise speed, continue when Between 57h, 600-700 DEG C, 3.8 DEG C/h of temperature rise speed, duration 27h, 700-800 DEG C, 5.0 DEG C/h of temperature rise speed, continue when Between 20h, 800-1000 DEG C, 8.0 DEG C/h of temperature rise speed, duration 25h, 1000-1200 DEG C, 8.3 DEG C/h of temperature rise speed, continue Time 20h, 1200 DEG C of retention time 20h；
F, processing：Product cooling is to after room temperature, clearing up surface inserts, and the processing drawing provided according to client, processing Into corresponding size.

Claims (7)

1. a kind of manufacture method of disposal molding graphite crucible, it is characterised in that comprise the following steps：
（1）Dispensing：Graphite comminution into graphite powder mass percent be 70%-90%, medium temperature coal pitch mass percent be 10%- 30%；
（2）Kneading；
（3）Die mould；
（4）Roasting；
（5）Processing.
2. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described graphite is broken Real density is 2.13 g/cm3, ash content is 0.03 %, and volatilization is divided into 0.22 %, and moisture is 0.09 %；Medium temperature coal pitch ash content is 0.20 %, volatilization is divided into 64.2 %, and moisture is 0.06 %.
3. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described graphite powder The percent of pass that purity is sieved with 200 mesh international standard sieves is 80 ± 5%.
4. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described graphite powder Granularity mass percent composition is as follows：
The graphite powder 2%-4% of 1mm granularities；
The graphite powder 37%-43% of 0.5-0.15 granularity；
The graphite powder 37%-43% of -0.075 granularity；
The graphite powder 17%-23% of other granularities.
5. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described step is mixed It is to pour ingredients into be stirred in kneading pot to pinch, and kneading pot itself carries out external heat by conduction oil, and there is reamer progress inside Material stirring, kneading pot heat conductive oil inlet temperature：It is 230-233 DEG C, lower to 162-165 DEG C of asphalt temperature in kneading pot, kneading The dry-mixed time：40 minutes, 118-126 DEG C of temperature；The wet mixing time of kneading：45 minutes, 162-168 DEG C of temperature.
6. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described step 3 Die mould is to pour into the thickener after kneading in container molding, and in container molding thickener disposably is pressed into earthenware by forcing press Crucible, the pressure of making firm by ramming of die mould is 20Mpa, and the Mpa of briquetting pressure 20, the press time is 4 minutes.
7. the manufacture method of disposal molding graphite crucible according to claim 1, it is characterised in that：Described step 4 Roasting is that die mould green compact are fitted into industrial ring-form calcining furnace, in the case of reducing atmosphere, is progressively heated by heating curve, 150-350 DEG C, 4.4 DEG C/h of temperature rise speed, the h of duration 45；350-400 DEG C, 1.7 DEG C/h of temperature rise speed, duration 30h, 400-500 DEG C, 1.25 DEG C/h of temperature rise speed, duration 80h, 500-600 DEG C, 1.8 DEG C/h of temperature rise speed, duration 57h, 600-700 DEG C, 3.8 DEG C/h of temperature rise speed, duration 27h, 700-800 DEG C, 5.0 DEG C/h of temperature rise speed, duration 20h, 800-1000 DEG C, 8.0 DEG C/h of temperature rise speed, duration 25h, 1000-1200 DEG C, 8.3 DEG C/h of temperature rise speed, the duration 20h, 1200 DEG C of retention time 20h.
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Cited By (11)

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CN108840680A (en) * 2018-09-18 2018-11-20 平顶山东方碳素股份有限公司 A kind of graphite product and processing method using recycling graphite material production
CN109694250A (en) * 2018-06-19 2019-04-30 安徽锦美碳材科技发展有限公司 A method of preparing graphite saggar
CN109732791A (en) * 2019-02-26 2019-05-10 青岛润凯碳素有限公司 Graphite crucible processing technology
CN109768277A (en) * 2019-01-11 2019-05-17 北京科技大学 A kind of graphene oxide modified coal pitch binder and preparation method thereof
CN111087249A (en) * 2019-12-27 2020-05-01 重庆东星炭素材料有限公司 Graphite porous crucible and preparation method thereof
CN111205092A (en) * 2020-01-21 2020-05-29 吉林科工碳业有限公司 Method and device for manufacturing one-step formed graphite crucible
CN112062569A (en) * 2020-09-04 2020-12-11 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using reclaimed materials
CN112266248A (en) * 2020-11-04 2021-01-26 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using low-quality graphite raw material
CN113683424A (en) * 2021-09-10 2021-11-23 吉林科工碳业有限公司 Method for preparing crucible by hot-pressing and cold-discharging one-step forming of regenerated graphite
CN114213127A (en) * 2021-12-31 2022-03-22 吉林科工碳业有限公司 Preparation method of graphite crucible
CN115557732A (en) * 2022-12-02 2023-01-03 石家庄中正碳素有限公司 Special crucible forming preparation process for cathode powder

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CN102381700A (en) * 2011-07-27 2012-03-21 中钢集团吉林炭素股份有限公司 Manufacturing method of graphite material
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109694250A (en) * 2018-06-19 2019-04-30 安徽锦美碳材科技发展有限公司 A method of preparing graphite saggar
CN108840680A (en) * 2018-09-18 2018-11-20 平顶山东方碳素股份有限公司 A kind of graphite product and processing method using recycling graphite material production
CN109768277A (en) * 2019-01-11 2019-05-17 北京科技大学 A kind of graphene oxide modified coal pitch binder and preparation method thereof
CN109732791A (en) * 2019-02-26 2019-05-10 青岛润凯碳素有限公司 Graphite crucible processing technology
CN111087249A (en) * 2019-12-27 2020-05-01 重庆东星炭素材料有限公司 Graphite porous crucible and preparation method thereof
CN111205092B (en) * 2020-01-21 2020-10-13 吉林科工碳业有限公司 Method and device for manufacturing one-step formed graphite crucible
CN111205092A (en) * 2020-01-21 2020-05-29 吉林科工碳业有限公司 Method and device for manufacturing one-step formed graphite crucible
CN112062569A (en) * 2020-09-04 2020-12-11 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using reclaimed materials
CN112062569B (en) * 2020-09-04 2022-04-08 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using reclaimed materials
CN112266248A (en) * 2020-11-04 2021-01-26 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using low-quality graphite raw material
CN112266248B (en) * 2020-11-04 2022-09-23 汨罗市福缘新材料有限公司 Method for preparing graphite crucible by using low-quality graphite raw material
CN113683424A (en) * 2021-09-10 2021-11-23 吉林科工碳业有限公司 Method for preparing crucible by hot-pressing and cold-discharging one-step forming of regenerated graphite
CN113683424B (en) * 2021-09-10 2023-03-10 吉林科工碳业有限公司 Method for preparing crucible by hot-pressing and cold-discharging one-step forming of regenerated graphite
CN114213127A (en) * 2021-12-31 2022-03-22 吉林科工碳业有限公司 Preparation method of graphite crucible
CN115557732A (en) * 2022-12-02 2023-01-03 石家庄中正碳素有限公司 Special crucible forming preparation process for cathode powder

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