JPS62167211A - Production of high-density graphitic material - Google Patents
Production of high-density graphitic materialInfo
- Publication number
- JPS62167211A JPS62167211A JP61008334A JP833486A JPS62167211A JP S62167211 A JPS62167211 A JP S62167211A JP 61008334 A JP61008334 A JP 61008334A JP 833486 A JP833486 A JP 833486A JP S62167211 A JPS62167211 A JP S62167211A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- molding
- molding powder
- particle diameter
- density
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000463 material Substances 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 41
- 238000000465 moulding Methods 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 30
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 4
- 239000007770 graphite material Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 239000006253 pitch coke Substances 0.000 abstract description 7
- 239000011280 coal tar Substances 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 239000002006 petroleum coke Substances 0.000 abstract description 2
- 238000004898 kneading Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 239000011271 tar pitch Substances 0.000 description 3
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000011329 calcined coke Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、高密度黒鉛材の製造法に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for producing high-density graphite material.
（従来の技術）
一般に高密度黒鉛材は次のような方法で作られることが
知られている。(Prior Art) It is generally known that high-density graphite materials are made by the following method.
（１）生コークスに焼結助材を加え、ホットプレスで作
る方法。(1) A method of adding sintering aids to raw coke and making it using a hot press.
（２）焼成体にピッチ含浸し、再焼成して黒鉛化する方
法。(2) A method in which the fired body is impregnated with pitch and re-fired to graphitize it.
（３）生コークスを微粉砕して焼結助剤を加えて作る方
法。(3) A method of making raw coke by pulverizing it and adding a sintering aid.
（４）仮焼コークスを微粉砕して作る方法。(4) A method of making by finely pulverizing calcined coke.
（発明が解決しようとする問題点）
しかし、これらの方法は次にあげるような各々の問題点
がある。（１）は、高価なホットプレスを使うこと、（
２）はピッチ含浸のコストがかかること。(Problems to be Solved by the Invention) However, these methods have the following problems. (1) requires the use of an expensive hot press (
2) The cost of pitch impregnation is high.
（３）の方法によると高純度の黒鉛材が得られないこと
、（４）の方法によれば結合材の添加量が多く、そのた
め揮発分の調整が難かしく、焼成時に亀裂やふくれが発
生し易く焼成歩留が悪いということである。Method (3) does not yield high-purity graphite material, and method (4) requires a large amount of binder, which makes it difficult to adjust the volatile content and causes cracks and blisters during firing. This means that the firing yield is poor.
本発明は、上記した問題点を解消する高密度黒鉛材の製
造法を提供することを目的とする。An object of the present invention is to provide a method for producing a high-density graphite material that solves the above-mentioned problems.
（問題点を解決するための手段） 本発明は、骨材及び結合材を捏和、粉砕、成形。(Means for solving problems) The present invention involves kneading, crushing, and molding aggregates and binding materials.
焼成及び黒鉛化する炭素材の製造法において、成形前の
粉末が複数の種類の成形粉を混合した混合成形粉であシ
、該混合成形粉中の少なくとも１種の成形粉の平均粒径
が最多含有量を占める成形粉の平均粒径の０．１〜０．
４倍である高密度黒鉛材の製造法に関する。In a method for producing a carbon material that is fired and graphitized, the powder before molding is a mixed molding powder obtained by mixing a plurality of types of molding powder, and the average particle size of at least one type of molding powder in the mixed molding powder is 0.1 to 0.0 of the average particle size of the molding powder that accounts for the largest content.
This invention relates to a method for producing high-density graphite material that is four times as dense.
本発明において高密度黒鉛材は、かさ密度が１、７５６
／ｃｍ”以上のものを目標とする。成形粉は骨材及び
結合材を捏和し粉砕して得られ、骨材としてはピッチコ
ークス、石油コークス、黒鉛等の粉砕粉、油煙などであ
り、結合材としてはコールタール、ピッチ、フェノール
樹脂、ビニル樹脂などの高分子有機化合物をあげること
ができる。複数の成形粉とは製造履歴の同一でない成形
粉であり９例えば粒径又は種類の相違する骨材をそれぞ
れに適合した結合材で捏和、粉砕したものである。In the present invention, the high-density graphite material has a bulk density of 1,756
/cm" or more. The molding powder is obtained by kneading and pulverizing aggregates and binding materials, and the aggregates include pitch coke, petroleum coke, pulverized powder of graphite, etc., oil smoke, etc. Examples of the binder include high-molecular organic compounds such as coal tar, pitch, phenolic resin, and vinyl resin.Multiple molding powders are molding powders that have different manufacturing histories9, for example, differing in particle size or type. It is made by kneading and pulverizing aggregate with a binding material that is suitable for each type of aggregate.
この複数の成形粉を混合して混合成形粉とされるが、混
合成形粉中の少なくとも１種の成形粉の平均粒径は最多
含有量を占める成形粉の平均粒径の０．１〜０．４倍と
小さくすることにより、最多含有る
量を占め成形粉の粒子間の空隙に平均粒径の小さ八
い成形粉の粒子を充填して高密度の黒鉛材を得るもので
ある。０．１倍未満では均一な混合成形粉が得られず、
０．４倍を越えると充填性が悪くなシ高密度の炭素材が
得られない。また混合成形粉中に占める前記平均粒径の
小さい成形粉の量は５〜２５重量％の場合が高密度のも
のが得られ易く好ましい範囲である。The plurality of molding powders are mixed to form a mixed molding powder, and the average particle size of at least one type of molding powder in the mixed molding powder is 0.1 to 0.0 of the average particle size of the molding powder that accounts for the largest content. By reducing the particle size to .4 times, the voids between the particles of the molding powder are filled with particles of the molding powder having a small average particle size to obtain a high-density graphite material. If it is less than 0.1 times, a uniform mixed molding powder cannot be obtained,
If it exceeds 0.4 times, the filling property will be poor and a high density carbon material will not be obtained. Further, the amount of the molding powder having a small average particle size in the mixed molding powder is preferably from 5 to 25% by weight because it is easy to obtain a high-density product.
（実施例） 次に本発明の詳細な説明する。(Example) Next, the present invention will be explained in detail.
実施例１
平均粒径２０μｍのピッチコークス粉、平均粒径２０μ
ｍの人造黒鉛粉及び平均粒径８μｍのピッチコークス粉
に各々タールピッチを加え、それぞれに捏和機を用いて
捏和し粉砕機で粉砕して。Example 1 Pitch coke powder with an average particle size of 20 μm, average particle size of 20 μm
Tar pitch was added to artificial graphite powder of m and pitch coke powder with an average particle size of 8 μm, and the mixture was kneaded using a kneading machine and pulverized using a pulverizer.
平均粒径２６μｍ、２６μｍ及び１０μｍの成形粉を得
た。この３種類の成形粉を７０重量部、１０重量部及び
２０重量部の割合で充分混合して混合成形粉を得た。こ
の混合成形粉を加圧成形し。Molded powders with average particle diameters of 26 μm, 26 μm, and 10 μm were obtained. These three types of molding powder were sufficiently mixed in proportions of 70 parts by weight, 10 parts by weight, and 20 parts by weight to obtain a mixed molding powder. Pressure mold this mixed molding powder.
１０００℃で焼成し、２７００℃で黒鉛化して黒鉛材を
得た。この時の物理特性を第１表に示す。It was fired at 1000°C and graphitized at 2700°C to obtain a graphite material. The physical properties at this time are shown in Table 1.
実施例２
平均粒径２μｍ及び５μｍのピッチコークス粉に各々タ
ールピッチを加えて捏和し粉砕して平均粒径４μｍ及び
１０μｍの成形粉を得た。この２糧類の成形粉を２０重
量部及び８０重量部の割合で充分混合して、成形混合粉
を得た。この成形混合粉を加圧成形、焼成、黒鉛化して
黒鉛材を得た。Example 2 Tar pitch was added to pitch coke powder with average particle diameters of 2 μm and 5 μm, respectively, and the mixture was kneaded and pulverized to obtain molded powders with average particle diameters of 4 μm and 10 μm. The molded powders of these two foods were thoroughly mixed in a ratio of 20 parts by weight and 80 parts by weight to obtain a molded mixed powder. This molded mixed powder was pressure molded, fired, and graphitized to obtain a graphite material.
この時の物理特性を第１表に示す。The physical properties at this time are shown in Table 1.
比較例１
平均粒径２０μｍのピッチコークス粉にタールピンチを
加え捏和、粉砕して得た平均粒径２６μｍの成形粉を実
施例１と同じ方法で加圧成形、焼成。Comparative Example 1 A molded powder with an average particle size of 26 μm obtained by adding a tar pinch to pitch coke powder with an average particle size of 20 μm, kneading, and pulverizing the powder was pressure-molded and fired in the same manner as in Example 1.
黒鉛化した。この時の物理特性を第１表に示す。Graphitized. The physical properties at this time are shown in Table 1.
比較例２
平均粒径１０μｍのピッチコークス粉７６重量部及び平
均粒径１０μｍの人造黒鉛粉３０重量部とタールピッチ
とを配合し、捏和機にて７捏和軸粉砕し平均粒径１４μ
ｍの成形粉を得、以下、比較第１表
第１表から実施例の黒鉛材は、比較例の黒鉛材よりもか
さ密度及び強度（曲げ強さ）が格段に大きいことが示さ
れる。Comparative Example 2 76 parts by weight of pitch coke powder with an average particle size of 10 μm and 30 parts by weight of artificial graphite powder with an average particle size of 10 μm were blended with tar pitch, and the mixture was pulverized with 7 kneading shafts in a kneading machine to have an average particle size of 14 μm.
Comparative Table 1 Table 1 shows that the graphite material of the example has a much higher bulk density and strength (flexural strength) than the graphite material of the comparative example.
（発明の効果） 本発明によれば、焼成時に亀裂、ふくれがなく。(Effect of the invention) According to the present invention, there are no cracks or blisters during firing.
高密度、高強度の黒鉛材料を低コストで製造することが
できる。High-density, high-strength graphite material can be manufactured at low cost.
代理人 弁理士 若 林 邦 彦− ″番□Agent: Patent Attorney Kunihiko Wakabayashi ″No.□
Claims (1)
化する炭素材の製造法において、成形前の粉末が複数の
種類の成形粉を混合した混合成形粉であり、該混合成形
粉中の少なくとも１種の成形粉の平均粒径が最多含有量
を占める成形粉の平均粒径の０．１〜０．４倍であるこ
とを特徴とする高密度黒鉛材の製造法。1. In a carbon material production method in which aggregates and binders are kneaded, crushed, molded, fired, and graphitized, the powder before molding is a mixed molding powder that is a mixture of multiple types of molding powder, and the mixed molding A method for producing a high-density graphite material, characterized in that the average particle size of at least one type of molding powder in the powder is 0.1 to 0.4 times the average particle size of the molding powder that occupies the largest content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008334A JPS62167211A (en) | 1986-01-18 | 1986-01-18 | Production of high-density graphitic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008334A JPS62167211A (en) | 1986-01-18 | 1986-01-18 | Production of high-density graphitic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62167211A true JPS62167211A (en) | 1987-07-23 |
Family
ID=11690292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61008334A Pending JPS62167211A (en) | 1986-01-18 | 1986-01-18 | Production of high-density graphitic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771404A (en) * | 2014-01-15 | 2014-05-07 | 湖南省长宇新型炭材料有限公司 | Preparation method of graphite rod of oilless bearing |
-
1986
- 1986-01-18 JP JP61008334A patent/JPS62167211A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771404A (en) * | 2014-01-15 | 2014-05-07 | 湖南省长宇新型炭材料有限公司 | Preparation method of graphite rod of oilless bearing |
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