JPH03263490A - Production of raw material for high-density carbon material - Google Patents
Production of raw material for high-density carbon materialInfo
- Publication number
- JPH03263490A JPH03263490A JP6105190A JP6105190A JPH03263490A JP H03263490 A JPH03263490 A JP H03263490A JP 6105190 A JP6105190 A JP 6105190A JP 6105190 A JP6105190 A JP 6105190A JP H03263490 A JPH03263490 A JP H03263490A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- heat
- extraction
- treated
- weight
- 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
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- 239000002994 raw material Substances 0.000 title claims abstract description 14
- 239000003575 carbonaceous material Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000605 extraction Methods 0.000 claims abstract description 30
- 239000011295 pitch Substances 0.000 claims abstract description 19
- 239000002904 solvent Substances 0.000 claims abstract description 17
- 239000011316 heat-treated pitch Substances 0.000 claims abstract description 14
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 10
- 239000003849 aromatic solvent Substances 0.000 claims abstract description 9
- 239000012298 atmosphere Substances 0.000 claims abstract description 7
- 239000011294 coal tar pitch Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011269 tar Substances 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000011280 coal tar Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229940105922 elm extract Drugs 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002641 tar oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明の目的は、高密度炭素材料用原料の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The object of the present invention is related to a method for producing a raw material for high-density carbon material.
〈従来の技術〉
従来、高密度炭素材料用原料の製造にあたっては、特公
昭６２−１３２８４号公報に示されているように、コー
ルタールピンチを３５０〜６００℃の温度で熱処理し、
該熱処理工程で生成した熱処理ピッチをそのβ成分（ベ
ンゼン不溶でキノリン可溶成分）の全量又は一部を抽出
残ピッチに残すような条件下で抽出し、得られる抽出残
ピッチに不活性雰囲気あるいは還元雰囲気において２０
０〜４５０’Ｃｆ７）温度で仮焼処理を実施する方法が
用いられている。<Prior art> Conventionally, in producing raw materials for high-density carbon materials, coal tar pinches are heat treated at a temperature of 350 to 600°C, as shown in Japanese Patent Publication No. 13284/1984.
The heat-treated pitch produced in the heat treatment step is extracted under conditions that leave all or part of its β component (benzene-insoluble, quinoline-soluble component) in the extracted residual pitch, and the resulting extracted residual pitch is exposed to an inert atmosphere or 20 in a reducing atmosphere
A method of performing calcination treatment at a temperature of 0 to 450'Cf7) is used.
従来の抽出工程では、熱処理ピッチのβ成分の全量ある
いは一部を残すために、ベンゼン、タール軽油あるいは
タール中油が用いられてきた。In conventional extraction processes, benzene, tar light oil, or tar medium oil has been used to retain all or part of the beta component of the heat-treated pitch.
〈発明が解決しようとするｉ！！題〉
この製造方法においては、高密度炭素＋Ａ料川用料の収
率は抽出工程での抽出収率が支配的であり、炭素材料用
原料の収率を増加さ仕るためには、抽出工程での収率を
増加させることが必要となる。<The invention tries to solve i! ! In this production method, the yield of high-density carbon + A raw material is dominated by the extraction yield in the extraction process, and in order to increase the yield of raw material for carbon materials, extraction It is necessary to increase the yield of the process.
しかし一方収率を増加させるために、例えば抽出力の弱
い溶剤を用いれば、得られる仮焼品の品位が悪化し高密
度の炭素材料が得られることができないとい・）欠点か
あ０、た２、
イこＣ、本発明の１−１的（１、［、（Ｉ来と同等以１
の品質４イｊする高密匿炭素月１１用原料の製造方法に
係わり、特にその収率向七交しする、てとである。However, if, for example, a solvent with weak extraction power is used to increase the yield, the quality of the calcined product will deteriorate and a high-density carbon material cannot be obtained. 2. IkoC, 1-1 of the present invention (1, [, (I)
It is concerned with the production method of raw materials for high-density carbon fibers with a high quality of 4j, and is particularly concerned with the yield thereof.
く課題苓解決するための下段〉
本発明は、Ｘｉ−ルタール１”ツヂを３．’、ｉ０□＝
６００ ’Ｃの温度で熱処理１１、該熱処理過程でη−
成した熱処理ピンチａ＋’刀香族系溶剤を加えて抽出処
理を行い、次いで得られた抽出夕、（ピッチを不／ｌＩ
ｌ性雰囲気Ｔ−’あるい１．Ｌ ｉ’Ｊ元１忙［雰囲気
１：’ ！、ｉ−打いて２００・へ・４！ｉ０１’：の
温度“Ｃ仮焼する高密度炭素材料用原料の製造方法にお
いて、該熱処理ピッチにあらかじめ脂肪族系溶剤を加え
（抽出処理４Ｘ１１い、次いでその抽出残に該芳香族系
溶剤を加えることを特徴と１６高密度炭素材料川原籾の
製造方法である。The present invention solves the following problems:
Heat treatment 11 at a temperature of 600'C, during the heat treatment process η-
Extraction treatment was performed by adding the heat-treated pinch a+' aromatic solvent, and then the obtained extraction solution was
l atmosphere T-' or 1. L i'J original 1 busy [atmosphere 1:'! , i-type 200 to 4! i01': In a method for producing a raw material for high-density carbon material which is calcined at a temperature of "C", an aliphatic solvent is added to the heat-treated pitch in advance (extraction treatment 4X11), and then the aromatic solvent is added to the extraction residue. This is a method for producing 16 high-density carbon material Kawahara paddy.
く作 用〉
本発明Ｉｆら！、；ｉ： 、 ＝＋−ルクールピッｙ・
の溶剤に対−艷る熔解を熱力学的ＣＪ検酎耐た結果、溶
剤に対Ｖる＋ｌＪ溶、不溶の境界ｉ：ｌタールピンチ中
の軽質成分甲が変化するごと１、こ、（、り移動１゛る
ごとを見出１．た。Function> The present invention If et al. , ;i: , =+− Le Courcupy・
As a result of thermodynamic CJ test of melting in the solvent of 1. I found a movement.
ずなわら、ピノーｙ中のある成分が芳香族系溶剤に可）
容であっζも、ピノエ・中の瞥？ｒ成分墳４二変什、さ
することにより刀看族溶剤に不溶Ｃ１”なり得る、゛と
を見出１．た。ごの現象は熱力学的（、：、 ＋；ｌ、
多成分系の溶液におい′で系の自由Ｊ４ネル゛１゛−を
最小にする成分の１１４成割合がピッチの軽質成分ｈ」
の変化により変化することを意味する。本発明は、゛、
の現象を利用しまたものである。Zunawara, certain components in Pineau Y can be used as aromatic solvents)
Is it a look at Pinoe Naka? We found that by rubbing the r-component mound 42, it can become insoluble in C1'' solvents.The phenomenon is thermodynamic (,:, +;l,
In a multi-component solution, the light component h of pitch is the component that minimizes the free J4 energy of the system.
means to change due to changes in The present invention includes:
It is also possible to utilize the phenomenon of
なお、特公昭６０−３４５９９号公報に口、タールピッ
・ブ中のＱ ｌわｌ了の効率的な分離に関しで、脂肪族
系 ｙ″Ｊ 族系 媒 γ１１．合溶 用いる方
法が述べられζいるが１、ｒの方法は、熱力学的に言え
ば、刀６族系溶媒と脂肪族系溶媒の混合比率により、ピ
ッチの溶解度が変化し、さらにその形態が変化すること
を利用しまたものである。一方、本発明は、タールビッ
グ中の軽質成分用の減少により、芳香族系溶媒へのピッ
−ｙの溶解度が減少する。−とを利用したものであって
、′）Ｊ−質的に異なるものである。In addition, Japanese Patent Publication No. 60-34599 describes a method using an aliphatic group medium for the efficient separation of Q11 in tarpi. 1. The method R is based on the fact that, thermodynamically speaking, the solubility of pitch changes depending on the mixing ratio of Group 6 solvent and aliphatic solvent, and its morphology also changes. On the other hand, the present invention utilizes the fact that the solubility of pi-y in aromatic solvents decreases due to the reduction of light components in tarbig, and are different from each other.
以上本発明の詳細な説明する。The present invention will now be described in detail.
本発明では、−１−ルタールビソチを、３５０へ・６０
０℃の温度で熱処理し７、得られた熱処理ピッチに脂肪
族系溶剤を添加混合、望まｊ、２＜は得られた熱処理ピ
ンチｘ重量部に対して、Ｃ，＋！、、、□あるいはＣ，
ｌｌｚ、、（３＜ ｎ ＜ １０） ご表される脂肪
族系溶剤から選ばれた１種または２種以上を１〜２０重
景部装置合で添加Ｌ７１．常温から前記溶剤の沸点の温
度範囲で混合、抽出を行い可溶成分と不溶成分を分離す
る。前記溶剤の添加量が１重量部未満の場合番こは、ｉ
ｉＪ溶成分成分溶成分の境界が不明確となり、また、逆
に２０重量部を超えても抽出される可溶成分の重量は大
きく変化しない。脂肪族系溶剤としてシ１１ ペンタン
、へ−１−゛リン、ヘゲタン、シフｌ−１へ−１−リン
などがノｔげられる。In the present invention, -1-rutarbisoti is converted to 350 to 60
Heat-treated at a temperature of 0°C 7, an aliphatic solvent was added and mixed to the obtained heat-treated pitch, and the desired j, 2< is C, +! with respect to the obtained heat-treated pinch x parts by weight. , , □ or C,
llz,, (3<n<10) One or more selected from the aliphatic solvents shown below are added in 1 to 20 cases L71. Mixing and extraction are performed at a temperature range from room temperature to the boiling point of the solvent to separate soluble and insoluble components. When the amount of the solvent added is less than 1 part by weight,
iJ soluble component The boundaries between the soluble components become unclear, and conversely, even if the amount exceeds 20 parts by weight, the weight of the extracted soluble component does not change significantly. Examples of aliphatic solvents include cyclopentane, he-1-phosphorus, hegetane, and sulfur-1-phosphorus.
前記可溶成分のう）離（真、ｔ、通常の分離方法、４な
わぢ、濾過、静置分離、遠心分離あるいはこれらのＩＪ
ｉｂ合わｌＩを用いるごとができる。Separation of the soluble components (true, t, normal separation method, 4-wire, filtration, static separation, centrifugation, or IJ of these)
It is possible to use ib and lI.
こうして得られた脂肪族系溶剤に不溶な成分に、。The thus obtained components are insoluble in aliphatic solvents.
うンゼン、１−ルエン、タール軽油あるいは、タール中
油の如き芳香族系）合剤を用いて、これらの溶剤に不溶
な成分の方にβ成分が多く残るよ）に抽出を行う。抽出
操作は１〜２回の操作で１分であり、数ｆ！ｆｆ ＃Ｊ
ｒｌの溶剤を使用する洗浄および乾燥などの複雑な操作
を必要としない。Extraction is performed using an aromatic mixture such as 1-luene, 1-luene, tar light oil, or tar-based oil, in which more β components remain in the components insoluble in these solvents. The extraction operation takes 1 minute with 1 or 2 operations, and takes several f! ff #J
No complicated operations such as washing and drying using RL solvents are required.
こうし７て（））られた抽出残ピッチを、２００〜４５
０℃の比較的低い温度で仮焼する。The extracted residual pitch thus obtained is 200 to 45
Calcinate at a relatively low temperature of 0°C.
以下実施例で本発明をより詳細に説明する。The present invention will be explained in more detail in the following examples.
〈実施例〉
実施例１
軟化点８ｏ゛ｃ、 １３１ （ベンゼン不溶分） １
９．５重量％、Ｑｌ（キノリンネ溶分”） １３．６重
量％なる７ノールタールビツヂをオートクレーブによす
４４０’Ｃの温度で３０分間熱処理して熱処理ピッチを
得た。ごの熱処理ピッチの特性値＋Ｊ：Ｂ Ｉ ５０
．３重量％、Ｑｌ ２８．７ ｍｉ甲％であった。こ
の熱処理ビン’ｆ用重量部に対し・＼−１−４Ｊンを２
０重量部添加し、沸点トで３０分間抽出を１テっだ。抽
出後、濾過により不溶成分を分離し、不溶成分中のヘキ
づンを除去しまた後、該−＼ニレ」−ン抽出残ピンチで
ある熱処理ピッチ１重量部に対しこ、３重量部のター、
ル中油（沸点１４０〜２７０℃）を添加し、１４０℃の
温度で１５０分間抽出を行い、濾過して抽出残ピッチを
得た。この抽出残ピッチの４．？外植はＢ ｌ ８４
．５重景％、Ｑ１７５．０重量％であった。この抽出残
ピッチを窒素雰囲気下で３９０’Ｃの温度で６時間仮焼
処理を行った。仮焼処理により得た仮焼品の特性値ばＢ
１９９．２重量％、Ｑ１９８．１重量％であった。仮焼
品の原料二１−ルクールビンチに対する収率は表１に示
すとおりとなった。<Example> Example 1 Softening point 8°C, 131 (benzene insoluble content) 1
7-nol tar bits containing 9.5% by weight and 13.6% by weight of Ql (quinoline solubles) were heat-treated in an autoclave at a temperature of 440'C for 30 minutes to obtain heat-treated pitch.Heat-treated pitch Characteristic value + J: B I 50
．． 3% by weight, Ql 28.7 mi A%. For this heat treatment bottle'f weight part, \-1-4J is 2
0 parts by weight was added and extraction was carried out for 30 minutes at boiling point. After extraction, the insoluble components are separated by filtration, and after removing the hexane in the insoluble components, 3 parts by weight of tar is added to 1 part by weight of the heat-treated pitch, which is the remaining pinch of the elm extract. ,
A medium oil (boiling point: 140 to 270°C) was added thereto, and extraction was performed at a temperature of 140°C for 150 minutes, followed by filtration to obtain extracted pitch. 4 of this extracted residual pitch. ? Explant is B l 84
．． It was 5% by weight, and 175.0% by weight. This extracted residual pitch was calcined at a temperature of 390'C for 6 hours under a nitrogen atmosphere. Characteristic values of calcined products obtained by calcining treatment B
They were 199.2% by weight and Q198.1% by weight. The yield of the calcined product based on the raw material 21-Lecour Vinci was as shown in Table 1.
比較例１
実施例１で得られた熱処理ピッチ（Ｂ ｌ ５０．３
重量％、ＱＩ２８．７重量％）に、熱処理ピンチ１ｍ
ｆｆｔ ｆ１＋＋に対し、タール中油（沸点１４０〜２
７０℃）を３重量部添加し、１４０℃で１５０分間抽出
を行った。Comparative Example 1 Heat-treated pitch obtained in Example 1 (B l 50.3
weight%, QI28.7 weight%), heat treatment pinch 1m
fft f1++, oil in tar (boiling point 140-2
70°C) was added thereto, and extraction was performed at 140°C for 150 minutes.
抽出後、濾過を行い、抽出残ピンチを得た。After extraction, filtration was performed to obtain a pinch of extraction residue.
抽出残ピッチの特性値はＢ Ｉ ８６．３重量％、９１
７８重量％であった。この抽出残ピッチを３８０℃の温
度で６時間仮焼処理を行った。仮焼処理により得た仮焼
品の特性値はＢ ｌ ９９．８重量％、Ｑ１９８．５重
量％であった。仮焼品の収率は表−１のとおりとなった
。The characteristic values of extracted residual pitch are B I 86.3% by weight, 91
It was 78% by weight. This extracted residual pitch was calcined at a temperature of 380° C. for 6 hours. The characteristic values of the calcined product obtained by the calcining treatment were B 1 99.8% by weight and Q 198.5% by weight. The yield of the calcined product is shown in Table 1.
実施例２
実施例１と同様のコールタールピッチをオートクレーブ
により４６０℃の温度で３０分間熱処理を行って熱処理
ビッヂを得た。この熱処理ピッチの特性値はＢ ｌ
７０．９重景％、ＱＩ４Ｂ、６重景％であった。この熱
処理ピッチに、熱処理ピンチ１重量部に対してシクロヘ
キサンを２０重量部添加しシクロヘキサンの沸点で抽出
し、濾過によりシクロヘキサンに不溶な抽出残ピッチを
得た。この抽出残ピッチからシクヘキサンを除去後、抽
出残ピッチ１重量部に対しタール中油（沸点１４０〜２
７０℃）を３Ｔ３ＪＬ部加え、１４０℃の温度で３０分
間抽出を行った。Example 2 The same coal tar pitch as in Example 1 was heat-treated in an autoclave at a temperature of 460° C. for 30 minutes to obtain a heat-treated bitch. The characteristic value of this heat-treated pitch is B l
It was 70.9% of heavy views, QI4B, and 6% of heavy views. To this heat-treated pitch, 20 parts by weight of cyclohexane was added per 1 part by weight of the heat-treated pinch, extracted at the boiling point of cyclohexane, and filtered to obtain extracted pitch that was insoluble in cyclohexane. After removing cyclohexane from this extracted residual pitch, tar oil (boiling point 140-2
70°C) was added in 3T3JL portions, and extraction was performed at a temperature of 140°C for 30 minutes.
抽出後、濾過により不溶な抽出残ピッチを得た。After extraction, insoluble extracted pitch was obtained by filtration.
この抽出残ピッチの特性値はＢ１８４．６重量％、Ｑ！
７２゜５重量％であった。この抽出残ピッチを窒素雰囲
気下で４２０℃の温度で３時間仮焼処理を行った。仮焼
処理により得た仮焼品の特性値はＢＩ９８．２重量％、
ＱＩ９Ｇ、５重量％であった。仮焼品の原料コールター
ルピッチに対する収率は表−１のとおりとなった。The characteristic values of this extracted residual pitch are B184.6% by weight, Q!
It was 72.5% by weight. This extracted residual pitch was calcined at a temperature of 420° C. for 3 hours in a nitrogen atmosphere. The characteristic values of the calcined product obtained by the calcining treatment are BI98.2% by weight,
QI9G, 5% by weight. The yield of the calcined product based on the raw material coal tar pitch was as shown in Table 1.
比較例２
実施例２で得た熱処理ピッチ（Ｂ Ｉ ７０．９重量％
、ＱＩ４１１．６重量％）に、熱処理ビッヂ１重量部に
対してタール中油（沸点１４０〜２７０’Ｃ）を３重量
部を加え、１４０“Ｃの温度で３０分間抽出を行った。Comparative Example 2 Heat-treated pitch obtained in Example 2 (BI 70.9% by weight)
, QI 411.6% by weight), 3 parts by weight of oil in tar (boiling point 140-270'C) was added to 1 part by weight of the heat-treated bitch, and extraction was performed at a temperature of 140"C for 30 minutes.
抽出後、濾過により不溶な抽出残ビッヂを得た。この抽
出残ピンチの特性値はＢ Ｉ ０４．２重量％、Ｑ１
７３．６重景％であった。この抽出残ピンチを窒素雰囲
気下で４００’Ｃの温度で３時間仮焼処理を行った。仮
焼処理により得た仮焼品の特性値ハ８１ ９８．５重量
％、ＱＩ９７．Ｂｒｉ量％であった。After the extraction, an insoluble extraction residue was obtained by filtration. The characteristic values of this extracted residual pinch are B I 04.2% by weight, Q1
It was 73.6%. This extraction residue pinch was calcined at a temperature of 400'C for 3 hours in a nitrogen atmosphere. Characteristic values of the calcined product obtained by the calcining treatment: C81: 98.5% by weight, QI: 97. The amount of Bri was %.
仮焼品の原料コールタールピンチに対する収率は表＝１
のとおりとなった。Table 1 shows the yield of calcined products based on a pinch of raw coal tar.
It turned out to be as follows.
表−Ｉ
た仮焼品をバインダーを使用せずに金型によりφ＝ １
８０ｘ高さ４０ｎ＋ｍの大きさに成形した。この成形品
を１００Ｏ’Ｃで焼成し、更に２７００℃で黒鉛化した
。Table-I Calcined products are molded into φ=1 without using a binder.
It was molded into a size of 80 x height 40n+m. This molded article was fired at 100O'C and further graphitized at 2700C.
得られたカーボンブロック１ｏｏｏ”ｃ焼成品の特性値
を表−２，２７００℃黒鉛化品の特性値を表−３に示す
。得られたカーボンブロックには割れおよびクラックの
発生は全く認められなかった。The characteristic values of the obtained carbon block 1ooo"c fired product are shown in Table 2, and the characteristic values of the 2700°C graphitized product are shown in Table 3. No cracks or cracks were observed in the obtained carbon block. Ta.
次に実施例１．２および比較例１．２で得られ〈発明の
効果〉
本発明の２段階抽出法によれば、高密度炭素原料がブｒ
−１７りの特性を１員なう、゛となく原１１コールター
ルビソヂに対して収率よく得られる。Next, according to the two-stage extraction method of the present invention, the high-density carbon raw material is
It can be obtained in good yield based on the original 11 coal tar bisodium, which has all the characteristics of 1-17.
特約出願人 崎製鉄株式会社 ２Special agreement applicant Saki Steel Co., Ltd. 2
Claims (1)
し、該熱処理過程で生成した熱処理ピッチに芳香族系溶
剤を加えて抽出処理を行い、次いで得られた抽出残ピッ
チを不活性雰囲気下あるいは還元性雰囲気下において２
００〜４５０℃の温度で仮焼する高密度炭素材料用原料
の製造方法において、該熱処理ピッチにあらかじめ脂肪
族系溶剤を加えて抽出処理を行い、次いでその抽出残に
該芳香族系溶剤を加えることを特徴とする高密度炭素材
料用原料の製造方法。Coal tar pitch is heat-treated at a temperature of 350 to 600°C, an aromatic solvent is added to the heat-treated pitch produced during the heat treatment process, and an aromatic solvent is added to extract the pitch. Under atmosphere 2
In a method for producing a raw material for a high-density carbon material, which is calcined at a temperature of 00 to 450°C, an aliphatic solvent is added to the heat-treated pitch in advance for extraction treatment, and then the aromatic solvent is added to the extraction residue. A method for producing a raw material for high-density carbon material, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6105190A JPH03263490A (en) | 1990-03-14 | 1990-03-14 | Production of raw material for high-density carbon material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6105190A JPH03263490A (en) | 1990-03-14 | 1990-03-14 | Production of raw material for high-density carbon material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03263490A true JPH03263490A (en) | 1991-11-22 |
Family
ID=13160031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6105190A Pending JPH03263490A (en) | 1990-03-14 | 1990-03-14 | Production of raw material for high-density carbon material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03263490A (en) |
-
1990
- 1990-03-14 JP JP6105190A patent/JPH03263490A/en active Pending
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