CN108530078A - A kind of forming method of big specification isostatic pressing formed graphite product - Google Patents
A kind of forming method of big specification isostatic pressing formed graphite product Download PDFInfo
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- CN108530078A CN108530078A CN201810555031.1A CN201810555031A CN108530078A CN 108530078 A CN108530078 A CN 108530078A CN 201810555031 A CN201810555031 A CN 201810555031A CN 108530078 A CN108530078 A CN 108530078A
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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
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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
- C04B35/522—Graphite
Abstract
The invention discloses a kind of forming methods of big specification isostatic pressing formed graphite product, include the following steps：S1：Raw material crushes：It chooses high-quality after-smithing petroleum coke and pitch coke crushes, obtain just broken raw material；S2：Material pulverizing：First broken raw material described in S1 is ground, powder raw material is obtained；S3：Raw material weighs, dispensing：It weighs to the powder raw material described in S2, and proportionally 1:1 ratio carries out dispensing, obtains prewired raw material；S4：Raw material is dry-mixed：Prewired raw material described in S3 is mixed at high temperature.The present invention is crushed by raw material, is milled, weighing can ensure that two kinds of material rates are suitable with dispensing, and it can ensure that two kinds of raw materials are sufficiently mixed,, raw material wet mixing dry-mixed by raw material can enable, hot roll and roasting make that isostatic pressed product specifications are big, density is high, consistent internal structure, greatly improve the quality of isostatic pressed product, and production cost can be reduced, meet the needs of modern production.
Description
Technical field
The present invention relates to the field shaping technique of isostatic pressing formed graphite product more particularly to a kind of big specification isostatic pressing formed graphite systems
The forming method of product.
Background technology
Isostatic pressing formed graphite is suppressed by high purity graphite.Isostatic pressing formed graphite is the new production to grow up in the past 50 years in the world
Product, it is closely linked with current high-tech.It not only fully develops talents on civilian, is occupied an important position on national defence tip, belongs to
New material attracts people's attention.It is to manufacture single crystal growing furnace, metal continuous cast graphite crystallizer, electrical discharge machining graphite electrode etc. no
Alternative material even more manufactures rocket nozzle, the decelerating material of graphite reactor and the perfect material of reflecting material.
Through retrieval, the patent document of Publication No. CN104529450B discloses a kind of molding of big specification isostatic pressing formed graphite
Method, including：Raw needle coke, after-smithing petroleum coke, pitch coke, carbon black and natural graphite are milled, and dry-mixed is mixture A,
Restructuring pitch, oleic acid and mixture A carry out wet mixing under conditions of temperature is 160~180 DEG C, obtain mixture B；Mixture B
Roller sheet is carried out after discharging, roller sheet is roasted, and calcination temperature is not less than 1000 DEG C；It is milled to the roller sheet after roasting；
To powder A carry out wet mixing under conditions of 180~220 DEG C of temperature with restructuring pitch, oleic acid, obtain mixture C；Mixture C
It is maintained under conditions of 160~180 DEG C of temperature and discharges, and carry out roller sheet, be milled after cooling；Obtained powder material B is in temperature
It is mixed under conditions of 50~70 DEG C of degree, and packs carry out isostatic pressing.Isostatic pressed product specifications prepared by this method are big,
Density is high, and consistent internal structure greatly lays a good foundation for isostatic pressed product calcining process, but its step is more numerous
Trivial, production cost is higher, is not suitable for modern production.
Invention content
Technical problems based on background technology, the present invention propose a kind of molding of big specification isostatic pressing formed graphite product
Method.
A kind of forming method of big specification isostatic pressing formed graphite product proposed by the present invention, includes the following steps：
S1：Raw material crushes：It chooses high-quality after-smithing petroleum coke and pitch coke crushes, obtain just broken raw material；
S2：Material pulverizing：First broken raw material described in S1 is ground, powder raw material is obtained；
S3：Raw material weighs, dispensing：It weighs to the powder raw material described in S2, and proportionally 1:1 ratio is matched
Material, obtains prewired raw material；
S4：Raw material is dry-mixed：Prewired raw material described in S3 is mixed at high temperature, obtains dry mixed raw material；
S5：Raw material wet mixing：Modified coal tar pitch is added in dry mixed raw material described in S4 and carries out wet mixing, obtains wet mixture；
S6：Hot roll, roasting：Wet mixture described in S5 is subjected to high temperature roll, obtains roller sheet, and roller sheet is roasted
It burns, obtains dry roller sheet；
S7：Cooling milling：The roller sheet of drying described in S6 is cooled down, is ground again after roller sheet cooling, obtains powdery
Preformed starting material；
S8：Pre-molding：By the powdery preformed starting material pack described in S7, decompression molding is waited for.
Preferably, in the S1, the high-quality after-smithing petroleum coke and pitch coke of selection are respectively placed in two jaw crushings
It is crushed, the broken time is 2~3h.
Preferably, in the S2, broken raw material at the beginning of two kinds is respectively placed in two 4R flour mills and is ground, grind duration
It is 2~3h, and goes out sieve is arranged in the discharge port of two 4R flour mills, the powder raw material after grinding is sieved using sieve
Choosing.
Preferably, it in the S3, is weighed to two kinds of powder raw materials using two electronic scales, is pressed using batch hopper respectively
According to 1:Two kinds of powder raw materials are carried out dispensing by 1 ratio.
Preferably, prewired raw material is placed in the 1000L electric heating intensive mixers of kerosene heating in the S4 and is mixed,
Incorporation time is 1~2h.
Preferably, in the S5, it is added pure water into electric heating intensive mixer, and by electric heating intensive mixer mixed cabin control
System mixes dry mixed raw material at 160~180 DEG C.
Preferably, in the S6, wet mixture is imported in hot-rolling mill using belt and carries out roll, by the roller sheet after roll
It is roasted, calcination temperature is controlled at 1000~1200 DEG C.
Preferably, in the S7, the roller sheet after roasting is placed in automatic cooler and is cooled down, roller sheet is made to be cooled to room
Temperature.
Preferably, in the S7, roller sheet after cooling is placed in 4R flour mills and is ground, 2~3h of grinding duration.
Preferably, in the S8, powdery preformed starting material is quantitatively packed into bag, is subsequently placed in isostatic pressing machine and is pressed into
The pressure of type, isostatic pressing machine is controlled in 120~150MPa, 15~20min of static pressure duration.
Beneficial effects of the present invention：It crushed, be milled by raw material, weighing can ensure that two kinds of material rates close with dispensing
It is suitable, and can ensure that two kinds of raw materials are sufficiently mixed, raw material wet mixing dry-mixed by raw material can enable, hot roll and roasting make
Isostatic pressed product specifications are big, density is high, consistent internal structure, greatly improve the quality of isostatic pressed product, and can reduce production
Cost meets the needs of modern production.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
Embodiment
A kind of forming method of big specification isostatic pressing formed graphite product is proposed in the present embodiment, is included the following steps：
S1：Raw material crushes：It chooses high-quality after-smithing petroleum coke and pitch coke crushes, obtain just broken raw material；
S2：Material pulverizing：First broken raw material in S1 is ground, powder raw material is obtained；
S3：Raw material weighs, dispensing：It weighs to the powder raw material in S2, and proportionally 1:1 ratio carries out dispensing, obtains
To prewired raw material；
S4：Raw material is dry-mixed：Prewired raw material in S3 is mixed at high temperature, obtains dry mixed raw material；
S5：Raw material wet mixing：Modified coal tar pitch is added in dry mixed raw material in S4 and carries out wet mixing, obtains wet mixture；
S6：Hot roll, roasting：Wet mixture in S5 is subjected to high temperature roll, roller sheet is obtained, and roller sheet is roasted, obtains
To dry roller sheet；
S7：Cooling milling：The roller sheet of drying in S6 is cooled down, roller sheet cooling after be ground again, obtain powdery in advance at
Type raw material；
S8：Pre-molding：By the powdery preformed starting material pack in S7, decompression molding is waited for.
In the present embodiment, in S1, the high-quality after-smithing petroleum coke and pitch coke of selection are respectively placed in two jaw crushings
It being crushed, the broken time is 2~3h, in S2, broken raw material at the beginning of two kinds is respectively placed in two 4R flour mills and is ground,
It is 2~3h to grind duration, and goes out sieve is arranged in the discharge port of two 4R flour mills, former to the powdery after grinding using sieve
Material is screened, and in S3, is weighed respectively to two kinds of powder raw materials using two electronic scales, using batch hopper according to 1:1
Two kinds of powder raw materials are carried out dispensing by ratio, are placed in prewired raw material in the 1000L electric heating intensive mixers of kerosene heating in S4
It is mixed, incorporation time is 1~2h, in S5, pure water is added into electric heating intensive mixer, and electric heating intensive mixer is mixed
It closes cabin control to mix dry mixed raw material at 160~180 DEG C, in S6, wet mixture is imported into hot-rolling mill using belt
Interior carry out roll, the roller sheet after roll is roasted, and calcination temperature is controlled at 1000~1200 DEG C, in S7, after roasting
Roller sheet is placed in automatic cooler and is cooled down, and roller sheet is made to be cooled to room temperature, and in S7, roller sheet after cooling is placed in 4R mills
It is ground in powder machine, in grinding duration 2~3h, S8, powdery preformed starting material is quantitatively packed into bag, isostatic pressed is subsequently placed in
The pressure of compression moulding in machine, isostatic pressing machine is controlled in 120~150MPa, static pressure 15~20min of duration, crushed by raw material,
It is milled, weighing can ensure that two kinds of material rates are suitable with dispensing, and can ensure that two kinds of raw materials are sufficiently mixed, dry by raw material
Mixed, raw material wet mixing can enable, hot roll and roasting make that isostatic pressed product specifications are big, density is high, consistent internal structure, significantly
The quality of isostatic pressed product is improved, and production cost can be reduced, meets the needs of modern production.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of forming method of big specification isostatic pressing formed graphite product, which is characterized in that include the following steps：
S1：Raw material crushes：It chooses high-quality after-smithing petroleum coke and pitch coke crushes, obtain just broken raw material；
S2：Material pulverizing：First broken raw material described in S1 is ground, powder raw material is obtained；
S3：Raw material weighs, dispensing：It weighs to the powder raw material described in S2, and proportionally 1:1 ratio is matched
Material, obtains prewired raw material；
S4：Raw material is dry-mixed：Prewired raw material described in S3 is mixed at high temperature, obtains dry mixed raw material；
S5：Raw material wet mixing：Modified coal tar pitch is added in dry mixed raw material described in S4 and carries out wet mixing, obtains wet mixture；
S6：Hot roll, roasting：Wet mixture described in S5 is subjected to high temperature roll, obtains roller sheet, and roller sheet is roasted
It burns, obtains dry roller sheet；
S7：Cooling milling：The roller sheet of drying described in S6 is cooled down, is ground again after roller sheet cooling, obtains powdery
Preformed starting material；
S8：Pre-molding：By the powdery preformed starting material pack described in S7, decompression molding is waited for.
2. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S1
In, the high-quality after-smithing petroleum coke and pitch coke of selection are respectively placed in two jaw crushings and are crushed, the broken time is 2
~3h.
3. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S2
In, broken raw material at the beginning of two kinds is respectively placed in two 4R flour mills and is ground, grinding duration is 2~3h, and in two 4R
The discharge port of flour mill goes out sieve is arranged, and is screened to the powder raw material after grinding using sieve.
4. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S3
In, it is weighed respectively to two kinds of powder raw materials using two electronic scales, using batch hopper according to 1:1 ratio is by two kinds of powderies
Raw material carries out dispensing.
5. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S4
Middle prewired raw material is placed in the 1000L electric heating intensive mixers of kerosene heating mixes, and incorporation time is 1~2h.
6. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S5
In, pure water is added into electric heating intensive mixer, and electric heating intensive mixer mixed cabin is controlled at 160~180 DEG C to drying
Mixed raw material is mixed.
7. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S6
In, wet mixture is imported in hot-rolling mill using belt and carries out roll, the roller sheet after roll is roasted, calcination temperature control
At 1000~1200 DEG C.
8. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S7
In, the roller sheet after roasting is placed in automatic cooler and is cooled down, roller sheet is made to be cooled to room temperature.
9. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that the S7
In, roller sheet after cooling is placed in 4R flour mills and is ground, 2~3h of grinding duration.
10. a kind of forming method of big specification isostatic pressing formed graphite product according to claim 1, which is characterized in that described
In S8, powdery preformed starting material is quantitatively packed into bag, is subsequently placed in compression moulding in isostatic pressing machine, the pressure control of isostatic pressing machine
System is in 120~150MPa, 15~20min of static pressure duration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810555031.1A CN108530078B (en) | 2018-06-01 | 2018-06-01 | Forming method of large-size isostatic pressing graphite product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810555031.1A CN108530078B (en) | 2018-06-01 | 2018-06-01 | Forming method of large-size isostatic pressing graphite product |
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| CN108530078A true CN108530078A (en) | 2018-09-14 |
| CN108530078B CN108530078B (en) | 2021-03-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109503169A (en) * | 2018-12-24 | 2019-03-22 | 成都阿泰克特种石墨有限公司 | A kind of special graphite and preparation method thereof |
| CN113831126A (en) * | 2021-09-17 | 2021-12-24 | 大同新成新材料股份有限公司 | Preparation method of isostatic pressing negative electrode carbon material |
| CN113896534A (en) * | 2021-09-29 | 2022-01-07 | 大同新成新材料股份有限公司 | Isostatic pressing graphite product with high compression strength and high breaking strength and forming method thereof |
| CN114349510A (en) * | 2022-01-14 | 2022-04-15 | 永安市鼎丰碳素科技有限公司 | Production process of isostatic pressing special graphite |
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| JP3381174B2 (en) * | 1991-06-10 | 2003-02-24 | 日本原子力研究所 | Graphite materials for nuclear reactors |
| CN103286850A (en) * | 2012-09-25 | 2013-09-11 | 江苏宏基炭素科技有限公司 | One-time forming method and special mold for graphite crucible |
| CN104529450A (en) * | 2014-12-04 | 2015-04-22 | 大同新成新材料股份有限公司 | Forming method of large-sized isostatic pressing formed graphite product |
| CN105819858A (en) * | 2016-05-19 | 2016-08-03 | 大同新成新材料股份有限公司 | Preparation method of pantograph carbon slider |
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2018
- 2018-06-01 CN CN201810555031.1A patent/CN108530078B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3381174B2 (en) * | 1991-06-10 | 2003-02-24 | 日本原子力研究所 | Graphite materials for nuclear reactors |
| CN103286850A (en) * | 2012-09-25 | 2013-09-11 | 江苏宏基炭素科技有限公司 | One-time forming method and special mold for graphite crucible |
| CN104529450A (en) * | 2014-12-04 | 2015-04-22 | 大同新成新材料股份有限公司 | Forming method of large-sized isostatic pressing formed graphite product |
| CN105819858A (en) * | 2016-05-19 | 2016-08-03 | 大同新成新材料股份有限公司 | Preparation method of pantograph carbon slider |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109503169A (en) * | 2018-12-24 | 2019-03-22 | 成都阿泰克特种石墨有限公司 | A kind of special graphite and preparation method thereof |
| CN113831126A (en) * | 2021-09-17 | 2021-12-24 | 大同新成新材料股份有限公司 | Preparation method of isostatic pressing negative electrode carbon material |
| CN113896534A (en) * | 2021-09-29 | 2022-01-07 | 大同新成新材料股份有限公司 | Isostatic pressing graphite product with high compression strength and high breaking strength and forming method thereof |
| CN114349510A (en) * | 2022-01-14 | 2022-04-15 | 永安市鼎丰碳素科技有限公司 | Production process of isostatic pressing special graphite |
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