CN102887505B - A kind of method manufacturing isostatic pressing formed graphite three lobe crucible - Google Patents
A kind of method manufacturing isostatic pressing formed graphite three lobe crucible Download PDFInfo
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- CN102887505B CN102887505B CN201210364815.9A CN201210364815A CN102887505B CN 102887505 B CN102887505 B CN 102887505B CN 201210364815 A CN201210364815 A CN 201210364815A CN 102887505 B CN102887505 B CN 102887505B
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- isostatic pressing
- mentioned
- pressing formed
- formed graphite
- green coke
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- 238000000034 method Methods 0.000 title claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000010439 graphite Substances 0.000 title claims abstract description 27
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 27
- 238000000462 isostatic pressing Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000002010 green coke Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 25
- 238000007669 thermal treatment Methods 0.000 claims abstract description 22
- 238000007493 shaping process Methods 0.000 claims abstract description 17
- 239000003082 abrasive agent Substances 0.000 claims abstract description 16
- 238000007598 dipping method Methods 0.000 claims abstract description 14
- 239000010426 asphalt Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 8
- 238000000748 compression moulding Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Abstract
The present invention proposes a kind of method manufacturing isostatic pressing formed graphite three lobe crucible, comprise step: heat-treated at 20 ~ 30 DEG C by green coke; The pitch of the green coke after above-mentioned thermal treatment and 120 ~ 140 DEG C mixes by the weight ratio by 5: 3 ~ 7: 5; Abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 ~ 140 DEG C is just broken; Sieve through 900 ~ 1100 eye mesh screens after abrasive material; By shaping for the compound powder press-powder after above-mentioned sieving; The product suppressed carries out bakes to burn the article; Product after being terminated by above-mentioned bakes to burn the article soaks 3 ~ 5 hours in liquid bitumen; Product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible, and intensity is higher, and density is larger, and properties is excellent, solves production cycle length in prior art, complex manufacturing, problem that product physicochemical property is low.
Description
Technical field
The present invention relates to crucible manufacturing technology field, refer to a kind of method manufacturing isostatic pressing formed graphite three lobe crucible especially.
Background technology
Generally traditional isostatic pressing formed graphite is all the refinery coke after adopting calcining, its true specific gravity 2.06g/cm
3, need in production through three leaching four roastings, production cycle length, complex manufacturing, product physicochemical property are low.
Summary of the invention
The present invention proposes a kind of method manufacturing isostatic pressing formed graphite three lobe crucible, solves production cycle length in prior art, complex manufacturing, problem that product physicochemical property is low.
Technical scheme of the present invention is achieved in that a kind of method manufacturing isostatic pressing formed graphite three lobe crucible, comprises step:
1) green coke is heat-treated at 20 ~ 30 DEG C;
2) by the weight ratio of 5: 3 ~ 7: 5, the pitch of the green coke after above-mentioned thermal treatment and 120 ~ 140 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 ~ 140 DEG C is just broken;
4) sieve through 900 ~ 1100 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 3 ~ 5 hours in liquid bitumen;
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
Described bakes to burn the article is carrying out roasting less than 300 DEG C intensification with lower curve with four days, and per tour heats up 50 DEG C, after temperature reaches 300 DEG C, and insulation; 300 ~ 600 DEG C heated up with 6 days, and per tour heats up 20 DEG C, after temperature reaches 600 DEG C, and insulation; More than 600 DEG C heat up 5 days, and per tour heats up 50 DEG C, stop heating up, be incubated bakes to burn the article after 6 days and terminate, 21 days bakes to burn the article process used times after temperature is raised to 1100 DEG C;
As preferred technical scheme, described press-powder is shaping is adopt outside diameter to be 575 ~ 595mm, the cold isostatic press compression moulding of interior dark 360 ~ 380mm, interior diameter 465 ~ 485mm, total height 435 ~ 455mm, base thickness 70 ~ 80mm.
As the improvement to technique scheme, described press-powder is shaping is adopt outside diameter to be 585mm, interior dark 370mm, interior diameter 475mm, total height 445mm, the cold isostatic press compression moulding of base thickness 75mm.
As preferred technical scheme, in described pressing process, pressure remains on 80 ~ 90 MPas, and the press time is 25 ~ 35 minutes.
As preferred technical scheme, described dipping adopts horizontal dip tank to flood.
As preferred technical scheme, after described thermal treatment, green coke true specific gravity reaches 1.5 ~ 1.7g/cm3.
As preferred technical scheme, described greying is in carbon monoxide environment, and graphitizing furnace evenly heats up and reaches 2000 DEG C for 4 days, and pressure-controlling is at-0.06MPa.
Owing to have employed technique scheme, a kind of method manufacturing isostatic pressing formed graphite three lobe crucible, comprises step: 1) heat-treated at 20 ~ 30 DEG C by green coke; 2) by the weight ratio of 5: 3 ~ 7: 5, the pitch of the green coke after above-mentioned thermal treatment and 120 ~ 140 DEG C is mixed; 3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 ~ 140 DEG C is just broken; 4) sieve through 900 ~ 1100 eye mesh screens after abrasive material; 5) by shaping for the compound powder press-powder after above-mentioned sieving; 6) product suppressed carries out bakes to burn the article; 7) product after being terminated by above-mentioned bakes to burn the article soaks 3 ~ 5 hours in liquid bitumen; 8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible, shorten 4 ~ 5 months cycles compared with traditional isostatic pressing formed graphite, quality standard reaches the requirement that three leachings four roast, and intensity is higher, density is larger, and properties is excellent.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of method manufacturing isostatic pressing formed graphite three lobe crucible, comprises step:
1) green coke is heat-treated at 20 ~ 30 DEG C;
2) by the weight ratio of 5: 3 ~ 7: 5, the pitch of the green coke after above-mentioned thermal treatment and 120 ~ 140 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 ~ 140 DEG C is just broken;
4) sieve through 900 ~ 1100 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 3 hours in liquid bitumen
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
Described bakes to burn the article is carrying out roasting less than 300 DEG C intensification with lower curve with 4 days, and per tour heats up 50 DEG C, after temperature reaches 300 DEG C, and insulation; 300 DEG C ~ 600 DEG C heated up with 6 days, and per tour heats up 20 DEG C, after temperature reaches 600 DEG C, and insulation; More than 600 DEG C heat up 5 days, and per tour heats up 50 DEG C, stop heating up, be incubated bakes to burn the article after 6 days and terminate, 21 days bakes to burn the article process used times after temperature is raised to 1100 DEG C.
Described press-powder is shaping is adopt outside diameter to be 575 ~ 595mm, the cold isostatic press compression moulding of interior dark 360 ~ 380mm, interior diameter 465 ~ 485mm, total height 435 ~ 455mm, base thickness 70 ~ 80mm.
Described press-powder is shaping is adopt outside diameter to be 585mm, interior dark 370mm, interior diameter 475mm, total height 445mm, the cold isostatic press compression moulding of base thickness 75mm.
In described pressing process, pressure remains on 80 ~ 90 MPas, and the press time is 25 ~ 35 minutes.
Described dipping adopts horizontal dip tank to flood.
After described thermal treatment, green coke true specific gravity reaches 1.5 ~ 1.7g/cm
3.
Described greying is in carbon monoxide environment, and graphitizing furnace evenly heats up and reaches 2000 DEG C for 4 days, and pressure-controlling is at-0.06MPa.
Embodiment one
Manufacture a method for isostatic pressing formed graphite three lobe crucible, comprise step:
1) green coke is heat-treated at 20 DEG C;
2) by the weight ratio of 5: 3, the pitch of the green coke after above-mentioned thermal treatment and 120 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 DEG C is just broken;
4) sieve through 900 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 4 hours in liquid bitumen;
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
Described bakes to burn the article is carrying out roasting less than 300 DEG C intensification with lower curve with 4 days, and per tour heats up 50 DEG C, after temperature reaches 300 DEG C, and insulation; 300 DEG C ~ 600 DEG C heated up with 6 days, and per tour heats up 20 DEG C, after temperature reaches 600 DEG C, and insulation; More than 600 DEG C heat up 5 days, and per tour heats up 50 DEG C, stop heating up, be incubated bakes to burn the article after 6 days and terminate, 21 days bakes to burn the article process used times after temperature is raised to 1100 DEG C;
Described press-powder is shaping is adopt outside diameter to be 575mm, interior dark 360mm, interior diameter 465mm, total height 435mm, the cold isostatic press compression moulding of base thickness 70mm.
In described pressing process, pressure remains on 80 MPas, and the press time is 25 minutes.
Described dipping adopts horizontal dip tank to flood.
After described thermal treatment, green coke true specific gravity reaches 1.5g/cm3.
Described greying is in carbon monoxide environment, and graphitizing furnace evenly heats up and reaches 2000 DEG C for 4 days, and pressure-controlling is at-0.06MPa.
Embodiment two
Manufacture a method for isostatic pressing formed graphite three lobe crucible, comprise step:
1) green coke is heat-treated at 25 DEG C;
2) by the weight ratio of 6: 4, the pitch of the green coke after above-mentioned thermal treatment and 130 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 130 DEG C is just broken;
4) sieve through 1000 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 5 hours in liquid bitumen
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
Described bakes to burn the article is carrying out roasting less than 300 DEG C intensification with lower curve with 4 days, and per tour heats up 50 DEG C, after temperature reaches 300 DEG C, and insulation; 300 DEG C ~ 600 DEG C heated up with six days, and per tour heats up 20 DEG C, after temperature reaches 600 DEG C, and insulation; More than 600 DEG C heat up 5 days, and per tour heats up 50 DEG C, stop heating up, be incubated bakes to burn the article after 6 days and terminate, 21 days bakes to burn the article process used times after temperature is raised to 1100 DEG C.
Described press-powder is shaping is adopt outside diameter to be 585mm, interior dark 370mm, interior diameter 475mm, total height 445mm, the cold isostatic press compression moulding of base thickness 75mm.
In described pressing process, pressure remains on 85 MPas, and the press time is 30 minutes.
Described dipping adopts horizontal dip tank to flood.
After described thermal treatment, green coke true specific gravity reaches 1.6g/cm3.
Described greying is in carbon monoxide environment, and graphitizing furnace evenly heats up and reaches 2000 DEG C for 4 days, and pressure-controlling is at-0.06MPa.
Embodiment three
Manufacture a method for isostatic pressing formed graphite three lobe crucible, comprise step:
1) green coke is heat-treated at 30 DEG C;
2) by the weight ratio of 7: 5, the pitch of the green coke after above-mentioned thermal treatment and 140 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 140 DEG C is just broken;
4) sieve through 1100 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 4 hours in liquid bitumen
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
Described bakes to burn the article is carrying out roasting less than 300 DEG C intensification with lower curve with 4 days, and per tour heats up 50 DEG C, after temperature reaches 300 DEG C, and insulation; 300 DEG C ~ 600 DEG C heated up with six days, and per tour heats up 20 DEG C, after temperature reaches 600 DEG C, and insulation; More than 600 DEG C heat up 5 days, and per tour heats up 50 DEG C, stop heating up, be incubated bakes to burn the article after 6 days and terminate, 21 days bakes to burn the article process used times after temperature is raised to 1100 DEG C.
Described press-powder is shaping is adopt outside diameter to be 595mm, interior dark 380mm, interior diameter 485mm, total height 455mm, the cold isostatic press compression moulding of base thickness 80mm.
In described pressing process, pressure remains on 90 MPas, and the press time is 35 minutes.
Described dipping adopts horizontal dip tank to flood.
After described thermal treatment, green coke true specific gravity reaches 1.7g/cm3.
Described greying is in carbon monoxide environment, and graphitizing furnace evenly heats up and reaches 2000 DEG C for 4 days, and pressure-controlling is at-0.06MPa.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. manufacture a method for isostatic pressing formed graphite three lobe crucible, it is characterized in that, comprise step:
1) green coke is heat-treated at 20 ~ 30 DEG C;
2) by the weight ratio of 5: 3 ~ 7: 5, the pitch of the green coke after above-mentioned thermal treatment and 120 ~ 140 DEG C is mixed;
3) abrasive material is carried out after the pitch of the green coke after the above-mentioned thermal treatment mixed and 120 ~ 140 DEG C is just broken;
4) sieve through 900 ~ 1100 eye mesh screens after abrasive material;
5) by shaping for the compound powder press-powder after above-mentioned sieving;
6) product suppressed carries out bakes to burn the article;
7) product after being terminated by above-mentioned bakes to burn the article soaks 3 ~ 5 hours in liquid bitumen;
8) the product greying after being completed by above-mentioned dipping obtains described isostatic pressing formed graphite three lobe crucible.
2. a kind of method manufacturing isostatic pressing formed graphite three lobe crucible as claimed in claim 1, it is characterized in that: described press-powder is shaping is adopt outside diameter to be 575 ~ 595mm, interior dark 360 ~ 380mm, interior diameter 465 ~ 485mm, the cold isostatic press compression moulding of total height 435 ~ 455mm, base thickness 70 ~ 80mm.
3. a kind of method manufacturing isostatic pressing formed graphite three lobe crucible as claimed in claim 2, it is characterized in that: described press-powder is shaping is adopt outside diameter to be 585mm, interior dark 370mm, interior diameter 475mm, the cold isostatic press compression moulding of total height 445mm, base thickness 75mm.
4. a kind of method manufacturing isostatic pressing formed graphite three lobe crucible as claimed in claim 2, it is characterized in that: in described pressing process, pressure remains on 80 ~ 90 MPas, the press time is 25 ~ 35 minutes.
5. a kind of method manufacturing isostatic pressing formed graphite three lobe crucible as claimed in claim 1, is characterized in that: described dipping adopts horizontal dip tank to flood.
6. a kind of method manufacturing isostatic pressing formed graphite three lobe crucible as claimed in claim 1, is characterized in that: after described thermal treatment, green coke true specific gravity reaches 1.5 ~ 1.7g/cm
3.
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| CN102887505B true CN102887505B (en) | 2015-08-12 |
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| CN105565308B (en) * | 2016-01-20 | 2019-05-17 | 上海景烯新能源材料科技有限公司 | The crucible and its manufacturing method manufactured with raw petroleum coke and water-soluble binder |
| CN110642248A (en) * | 2019-11-19 | 2020-01-03 | 平顶山市天宝特种材料有限公司 | Production method of fine-structure high-purity graphite with changed molecular arrangement combination |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648808A (en) * | 2009-09-15 | 2010-02-17 | 中国科学院山西煤炭化学研究所 | Preparation method of graphite material |
| CN102060293A (en) * | 2010-11-16 | 2011-05-18 | 中钢集团吉林炭素股份有限公司 | Method for preparing binder-free graphite product |
| CN102241397A (en) * | 2011-05-16 | 2011-11-16 | 平顶山市开元特种石墨有限公司 | Method for manufacturing cold isostatic pressing formed graphite |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2553784B2 (en) * | 1991-07-10 | 1996-11-13 | 松下電器産業株式会社 | Graphite manufacturing method |
| US8951451B2 (en) * | 2009-05-26 | 2015-02-10 | Incubation Alliance, Inc. | Carbon material and method for producing same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648808A (en) * | 2009-09-15 | 2010-02-17 | 中国科学院山西煤炭化学研究所 | Preparation method of graphite material |
| CN102060293A (en) * | 2010-11-16 | 2011-05-18 | 中钢集团吉林炭素股份有限公司 | Method for preparing binder-free graphite product |
| CN102241397A (en) * | 2011-05-16 | 2011-11-16 | 平顶山市开元特种石墨有限公司 | Method for manufacturing cold isostatic pressing formed graphite |
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Address after: 467000 west of shenlou village, Weidong District, Pingdingshan City, Henan Province Patentee after: PINGDINGSHAN KAIYUAN SPECIAL GRAPHITE Co.,Ltd. Patentee after: Henan Cabos New Material Technology Co.,Ltd. Address before: 467000 west of shenlou village, Weidong District, Pingdingshan City, Henan Province Patentee before: PINGDINGSHAN KAIYUAN SPECIAL GRAPHITE Co.,Ltd. Patentee before: Henan Cabos New Material Technology Co.,Ltd. |