JP2855678B2 - Coke production method - Google Patents

Coke production method

Info

Publication number
JP2855678B2
JP2855678B2 JP1194818A JP19481889A JP2855678B2 JP 2855678 B2 JP2855678 B2 JP 2855678B2 JP 1194818 A JP1194818 A JP 1194818A JP 19481889 A JP19481889 A JP 19481889A JP 2855678 B2 JP2855678 B2 JP 2855678B2
Authority
JP
Japan
Prior art keywords
coke
carbon
raw material
coking
carbonized
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.)
Expired - Fee Related
Application number
JP1194818A
Other languages
Japanese (ja)
Other versions
JPH02132184A (en
Inventor
巌 山本
賢治 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Chemical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Publication of JPH02132184A publication Critical patent/JPH02132184A/en
Application granted granted Critical
Publication of JP2855678B2 publication Critical patent/JP2855678B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/20—Graphite
    • C01B32/205—Preparation

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明はコークスの製造方法に係わるものであって、
より詳しくは、黒鉛電極、炭素ブラシ等の炭素成形体用
のコークス、中でも主として電極用の炭素原料粒子とし
て多く用いられる、ニードルコークスの製造方法に係わ
るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for producing coke,
More specifically, the present invention relates to a method for producing a coke for a carbon molded body such as a graphite electrode and a carbon brush, and in particular, a needle coke used mainly as carbon raw material particles for an electrode.

（従来の技術） 黒鉛電極、炭素ブラシ等の炭素成形体は一般にピッチ
コークス、石油コークス等の各種仮焼コークス、その中
間製品である未仮焼コークス、天然黒鉛及び／又はカー
ボンブラック等の炭素原料粒子を粉砕し粒度調整を行な
った後、バインダーピッチ等の粘着剤と加熱しながら混
捏し、成形した後800〜1300℃の温度で焼成し、更に必
要に応じて2500〜3000℃の温度で黒鉛化処理を行なうこ
とにより製造されている。(Prior art) Carbon materials such as graphite electrodes and carbon brushes are generally made of various calcined cokes such as pitch coke and petroleum coke, and carbon materials such as uncalcined coke, natural graphite and / or carbon black, which are intermediate products thereof. After crushing the particles and adjusting the particle size, kneading while heating with an adhesive such as a binder pitch, molding and firing at a temperature of 800 to 1300 ° C, and further, if necessary, graphite at a temperature of 2500 to 3000 ° C It is manufactured by performing a chemical treatment.

又、炭素成形体の製造に、炭素原料粒子として供する
コークスは、石油重質油、天然産ギルソナイト又はコー
ルタールピッチ等の原料油をフルードコーキング法、フ
レキシコーキング法又はディレードコーキング法等の方
法でコークス化して製造されており、近年、製鋼用黒鉛
電極を初めとして炭素成形体の使用条件が過酷化し、炭
素成形体に求められる品質が特に耐熱衝撃性等の点で高
級化するに従い、石油系ピッチ又はキノリン不溶分を除
去した石炭系ピッチをディレードコーキング法でコーク
ス化してなるニードルコークスが用いられてきている。Coke to be provided as carbon raw material particles in the production of a carbon molded product is obtained by coking a raw material oil such as petroleum heavy oil, natural gilsonite or coal tar pitch by a method such as a fluid coking method, a flexible coking method or a delayed coking method. In recent years, the use conditions of carbon compacts, including graphite electrodes for steelmaking, have become severer, and as the quality required of carbon compacts has become higher, especially in terms of thermal shock resistance, petroleum-based pitch Alternatively, needle coke formed by coking coal-based pitch from which quinoline insoluble matter has been removed by a delayed coking method has been used.

（発明が解決しようとする問題点） しかし、近時の炭素成形体構造においては、省エネル
ギー化を図るために迅速黒鉛化法の採用が多くなりつつ
あるが、従来の製造方法で製造されたニードルコークス
を炭素質骨材として用いて製造した炭素成形体では迅速
黒鉛化等の異常膨張、即ちパッフィング現象が顕著に現
れて亀裂を生じることがあり、また、亀裂発生に至らな
いまでも見掛比重が小さくなって満足な強度が得られな
いという問題がある。(Problems to be Solved by the Invention) However, in recent carbon molded article structures, rapid graphitization has been increasingly adopted in order to save energy, but needles manufactured by a conventional manufacturing method have been used. Abnormal expansion such as rapid graphitization, that is, a puffing phenomenon, is noticeable in a carbon molded product manufactured using coke as a carbonaceous aggregate, and cracks may occur. Has a problem that a satisfactory strength cannot be obtained due to a decrease in the strength.

そのため、原料油に種々の添加物を加え、迅速黒鉛化
の際にパッフィング現象を抑制しようとする試みが数多
くなされているが、未だ十分に満足できる結果は得られ
ていない。For this reason, many attempts have been made to add various additives to the base oil to suppress the puffing phenomenon during rapid graphitization, but no satisfactory results have yet been obtained.

用いる炭素原料粒子がニードルコークスでない場合に
は、パッフィングは問題とはならないが、炭素成形体の
使用条件の過酷化に伴ない、成形体の製造に炭素原料粒
子として供した場合に得られる炭素成形体に充分な強度
を発現せしめ得るコークスが求められる。If the carbon material particles to be used are not needle coke, the puffing is not a problem, but the carbon molding obtained when the carbon material particles are used as the carbon material particles for the production of the molded product due to the severe use conditions of the carbon molded product. Coke capable of expressing sufficient strength to the body is required.

本発明者等は、上記の問題点を解決すべく鋭意検討し
た結果、原料油に炭素繊維又はニードルコークス等のア
スペクト比の平均が1.5以上の炭素化物を均一に分散・
混合せしめた後コークス化すれば、該炭素化物が芯とな
って、得られるコークス及び該コークスを炭素原料粒子
とし用いてなる炭素成形体の強度が向上し、特に該コー
クスがニードルコークスの場合には、高温焼成時のパッ
フィングの少ないニードルコークスが得られ、ひいては
炭素成形体のひび、割れ等の不良の発生を最小限に抑え
て高密度且つ高強度の炭素成形体が製造可能であること
を見出し、本発明に到達した。The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, a carbonized material having an average aspect ratio of 1.5 or more such as carbon fiber or needle coke is uniformly dispersed in the raw material oil.
If coke is formed after mixing, the carbonized material becomes a core, and the strength of the obtained coke and a carbon molded product obtained by using the coke as carbon raw material particles are improved, particularly when the coke is needle coke. Is that needle coke with little puffing at the time of high-temperature firing can be obtained, and thus, it is possible to produce a high-density and high-strength carbon molded body while minimizing the occurrence of defects such as cracks and cracks in the carbon molded body. Heading, the present invention has been reached.

即ち、本発明の目的は、高強度のコークスであって、
炭素原料粒子として用いたとき高強度の炭素成形体の製
造が可能なコークス、中でも高温焼成時のパッフィング
が少なく、高密度且つ高強度の炭素成形体の原料となり
得るニードルコークスを提供することにある。That is, an object of the present invention is high-strength coke,
An object of the present invention is to provide a coke capable of producing a high-strength carbon molded body when used as a carbon raw material particle, and in particular, needle coke which can be used as a raw material of a high-density and high-strength carbon molded body, with less puffing during high-temperature firing. .

（問題点を解決する為の手段） しかして、かかる本発明の目的は、原料油にアスペク
ト比の平均が1.5以上である炭素化物を均一に分散・混
合せしめた後コークス化することを特徴とするコークス
の製造方法により容易に達成される。(Means for Solving the Problems) However, an object of the present invention is to coke the raw material oil after uniformly dispersing and mixing a carbonized material having an average aspect ratio of 1.5 or more. This is easily achieved by a coke manufacturing method.

以下、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.

本発明に用いる原料油としては、通常のコークス製造
用の原料油であれば特に限定されるものではない。具体
的には、製造すべきコークスがニードルコークスの場合
にはコールタール又はコールタールピッチ、石油系の重
質油、石炭液化物、ナフサ分解残油等が挙げられ、キノ
リン不溶分が多い場合にはこれを除去して用いる必要が
ある。The feedstock oil used in the present invention is not particularly limited as long as it is a feedstock oil for producing ordinary coke. Specifically, when the coke to be produced is needle coke, coal tar or coal tar pitch, petroleum-based heavy oil, coal liquefaction, naphtha cracking residual oil, and the like are included, and when there is a large amount of quinoline insolubles, Must be used after removal.

また、本発明で用いるアスペクト比（長径／短径）が
1.5以上の炭素化物としては、形状的に異方性を有する
炭素化物であればよく、具体的にはピッチ系炭素繊維、
ポリアクリロニトリル系炭素繊維あるいは炭化水素化合
物の気相熱分解により生成する炭素繊維（VGCF）等の種
々の炭素繊維や炭素ウィスカー、ニードルコークス等の
炭素化物であって、アスペクト比の平均が1.5以上、好
ましくは15〜3000、更に好ましくは200〜2000のものが
挙げられる。アスペクト比がこの範囲より小さいと黒鉛
化時の膨張を抑制する効果がほとんどみられなくなり、
従って目的物の強度の補強効果もみられなくなる。また
あまりにもアスペクト比が大きすぎると原料油との混合
の際に、炭素化物が互いにからみ合い、均一に分散・混
合することが困難となる傾向が強くなるので好ましくな
い。The aspect ratio (major axis / minor axis) used in the present invention is
As the carbonized material of 1.5 or more, any carbonized material having shape anisotropy may be used.Specifically, pitch-based carbon fibers,
Various carbon fibers such as polyacrylonitrile-based carbon fibers or carbon fibers (VGCF) generated by gas phase pyrolysis of hydrocarbon compounds, and carbonized products such as carbon whiskers and needle coke, having an average aspect ratio of 1.5 or more, Preferably 15 to 3000, more preferably 200 to 2000. If the aspect ratio is smaller than this range, the effect of suppressing expansion during graphitization hardly appears,
Therefore, the effect of reinforcing the strength of the object is not observed. On the other hand, if the aspect ratio is too large, the carbonized product is entangled with each other at the time of mixing with the raw material oil, and it becomes difficult to uniformly disperse and mix the carbonized product.

ここでいう炭素化物とは通常500℃以上、好ましくは1
000℃以上の温度で熱処理されたものであって、場合に
より2000℃以上の温度で熱処理された黒鉛化物をも含む
ものである。The carbonized material here is usually 500 ° C or higher, preferably 1 ° C or more.
It is a material which has been heat-treated at a temperature of 000 ° C. or more, and also contains a graphitized material which has been heat-treated at a temperature of 2,000 ° C. or more in some cases.

本発明では、これらのアスペクト比の平均が1.5以上
の炭素化物を前記原料油に均一に分散・混合せしめた後
コークス化することが特徴であって、その混合比は原料
油100重量部に対して、炭素化物0.01〜30重量部、好ま
しくは0.05〜５重量部程度がよい。The present invention is characterized in that carbonized material having an average of these aspect ratios of 1.5 or more is uniformly dispersed and mixed in the raw material oil and then coked, and the mixing ratio is based on 100 parts by weight of the raw material oil. The amount of the carbonized material is 0.01 to 30 parts by weight, preferably about 0.05 to 5 parts by weight.

尚、これらの炭素化物は原料油に十分に均一混合され
ていることが望ましく、その混合方法としてはラインミ
キサー、ホモミキサー、モータ駆動の撹拌機の様な通常
の方法によって行なわれる。It is desirable that these carbonized materials are sufficiently uniformly mixed with the raw material oil, and the mixing method is performed by an ordinary method such as a line mixer, a homomixer, and a motor-driven stirrer.

通常炭素成形体用コークスを製造すべく原料油をコー
クス化する方法は、フルードコーキング法、フレキシコ
ーキング法及びディレードコーキング法等いくつかの方
法が知られており、本発明において、上記の原料油と炭
素化物との均一混合物をコークス化するに当っては、こ
れらの従来公知のコークス化法を含めて、原料油をコー
クス化するいかなる方法をも採用し得るが、従来、ピッ
チコークス或はニードルコークスの製造にはコーカー
（熱処理槽）の底部から原料油を挿入し、温度400〜600
℃、好ましくは450〜500℃、圧力常圧〜10kg/cm2なる条
件下、12〜48時間かけて徐々に軽沸分を除去しながらコ
ークス化するディレードコーカー法を用いるのが一般的
である。Usually, as a method of coking a raw material oil to produce coke for a carbon molded body, several methods such as a fluid coking method, a flexi caulking method and a delayed coking method are known. In coking the homogeneous mixture with the carbonized product, any method of coking the feedstock oil can be adopted, including these conventionally known coking methods, but conventionally, pitch coke or needle coke is used. The raw material is inserted from the bottom of the coker (heat treatment tank) at a temperature of 400 to 600
° C., preferably from 450 to 500 ° C., a pressure atmospheric pressure to 10 kg / cm 2 become conditions, generally used delayed coker process for coking while removing low-boiling fraction gradually over 12 to 48 hours .

かくして得られる生コークスは通常、３〜20重量％の
揮発分を含んでおり、そのまま炭素成形体用の原料炭素
質骨材として用いてもよいが、さらに高温で仮焼して揮
発分及び水分等を除き、仮焼コークスとして炭素成形体
の製造用原料に供してもよい。The raw coke thus obtained usually contains 3 to 20% by weight of volatile matter, and may be used as it is as a raw carbonaceous aggregate for a carbon molded product. Except for the above, it may be used as a raw material for producing a carbon molded body as calcined coke.

尚、本発明方法は、原料油に、アスペクト比の平均が
1.5以上の炭素化物を均一に分散・混合せしめた後コー
クス化することを特徴とし、該特徴を具備する限り、原
料油の種類又はコークス化の方法等の別によらずいかな
るコークスの製造方法をも含み得るものであって、該特
徴により、製造されるコークス中に均一に分散混合せし
められた炭素化物が芯となって該コークスを炭素原料粒
子として用いてなる炭素成形体の強度が向上する効果が
得られるが、従来問題となっていたパッフィングを抑制
することにより、炭素成形体のひび、割れ等を防止する
とともに製品の強度を格段に向上せしめ得る点で、本発
明はニードルコークスの製造方法に適用した場合に最も
その効果が顕著であるといえる。In the method of the present invention, the average of the aspect ratio is
It is characterized by uniformly dispersing and mixing 1.5 or more carbonized materials and then coking, and as long as it has such characteristics, any coke manufacturing method can be used regardless of the type of raw material oil or coking method. The carbonized material uniformly dispersed and mixed in the produced coke as a core, thereby improving the strength of a carbon molded body using the coke as carbon raw material particles. However, by suppressing the puffing, which has conventionally been a problem, the present invention provides a method of manufacturing a needle coke in that the carbon molded body can be prevented from cracking, cracking, and the like, and the strength of the product can be significantly improved. It can be said that the effect is most remarkable when applied to

（実施例） 以下、本発明を実施例により更に詳細に説明するが、
本発明はその要旨を超えない限り、下記実施例により限
定されるものではない。(Examples) Hereinafter, the present invention will be described in more detail with reference to Examples.
The present invention is not limited by the following examples unless it exceeds the gist.

実施例１ コールタールピッチ100重量部に、糸径10μｍ、引張
弾性率15ton/mm2の炭素繊維を長さ3mmに切断したものを
0.3重量部添加し、ホモミキサーで分散させた。これを
内容積６のオートクレーブに仕込み、電気炉で18時間
かけて500℃まで昇温し、500℃で５時間処理した後オー
トクレーブを冷却し内容物を取り出した。該内容物は揮
発分６％のコークスであった。次にこのコークスをフタ
付のアルミナ製の容器に入れこれを別の電気炉により13
00℃で２時間処理し仮焼コークスを得た。該仮焼コーク
スはさらに2700℃まで20℃／分の条件で昇温し黒鉛化処
理を行なった。炭素成形体のパッフィングの程度を簡便
に知るために、黒鉛化後のコークス及び仮焼コークスの
気孔量を水銀ポロシメータで測定し、その差から黒鉛化
処理時に生成する気孔量を算出したところ63mcc/gであ
った。Example 1 A carbon fiber having a yarn diameter of 10 μm and a tensile modulus of elasticity of 15 ton / mm 2 cut into a length of 3 mm in a coal tar pitch of 100 parts by weight.
0.3 parts by weight was added and dispersed with a homomixer. This was charged into an autoclave having an internal volume of 6, and the temperature was raised to 500 ° C. in an electric furnace over 18 hours, and after treating at 500 ° C. for 5 hours, the autoclave was cooled and the contents were taken out. The content was coke with a volatile content of 6%. Next, the coke was placed in an alumina container with a lid, and this was placed in another electric furnace.
Treated at 00 ° C. for 2 hours to obtain calcined coke. The calcined coke was further heated to 2700 ° C. at a rate of 20 ° C./min to perform graphitization. To easily know the degree of puffing of the carbon compact, the porosity of the coke after graphitization and the calcined coke was measured with a mercury porosimeter, and the porosity generated during the graphitization process was calculated from the difference to be 63 mcc /. g.

実施例２及び３ コールタール100重量部に添加する炭素繊維の量を0.1
重量部又は３重量部とした以外は実施例１と同様に処理
し仮焼コークス及び黒鉛化コークスを調製した。各々の
場合の黒鉛化処理時に生成する気孔量を測定・算出した
結果を表−１に示す。Examples 2 and 3 The amount of carbon fiber added to 100 parts by weight of coal tar was 0.1
Except for using 3 parts by weight or 3 parts by weight, the same treatment as in Example 1 was performed to prepare calcined coke and graphitized coke. Table 1 shows the results of measuring and calculating the amount of porosity generated during the graphitization treatment in each case.

比較例１〜３ 原料として、炭素繊維を添加することなく、コールタ
ールのみを用いた場合、及び表−１に示すコークス粉を
炭素繊維のかわりに添加した以外は実施例１と全く同様
に処理して仮焼コークス及び黒鉛化コークスを調製し、
求めた黒鉛化処理時に生成する気孔量を表−１に示す。Comparative Examples 1 to 3 Processing was performed in exactly the same manner as in Example 1 except that only coal tar was used as a raw material without adding carbon fiber, and that coke powder shown in Table 1 was added instead of carbon fiber. To prepare calcined coke and graphitized coke,
Table 1 shows the amount of pores generated during the graphitization treatment.

実施例４及び５ コールタールピッチ100重量部に炭素繊維のかわりに
コールタールピッチ系のニードルコークスの粒径74〜44
メッシュの生コークスであって、コークスの形状異方比
が1.7の生コークスを１重量部又は３重量部混合した以
外は実施例１と全く同様の処理をし、黒鉛化処理時に生
成する気孔量を水銀ポロシメーターで測定・算出した結
果を表１に示す。Examples 4 and 5 The particle size of the needle coke of the coal tar pitch system in place of carbon fiber in 100 parts by weight of the coal tar pitch was 74 to 44.
Exactly the same process as in Example 1 except that raw coke having a shape anisotropy ratio of coke of 1.7 was mixed with 1 part by weight or 3 parts by weight of the raw coke of the mesh, and the amount of porosity generated during the graphitization process Is measured and calculated with a mercury porosimeter, and the results are shown in Table 1.

実施例６及び７ コールタールピッチ100重量部に炭素繊維のかわりに
コールタールピッチ系のニードルコークスの粒径74〜44
メッシュの仮焼コークスであって、コークスの形状異方
比が1.85の仮焼コークスを１重量部又は３重量部混合し
た以外は実施例１と全く同様の処理をし、黒鉛化処理時
に生成する気孔量を水銀ポロシメーターで測定・算出し
た結果を表１に示す。Examples 6 and 7 Particles of a coal tar pitch-based needle coke of 74 to 44 in place of carbon fiber in 100 parts by weight of coal tar pitch
Exactly the same treatment as in Example 1 except that 1% by weight or 3% by weight of calcined coke having a shape anisotropy ratio of 1.85 which is a calcined coke of a mesh is produced during the graphitization process. Table 1 shows the results of measuring and calculating the porosity using a mercury porosimeter.

（発明の効果） 本発明方法によれば、その内部にニードルコークス及
び／又は炭素繊維等のアスペクト比の平均が1.5以上の
炭素化物が均一に分散・混合せしめられた高強度のコー
クスが製造でき、かかるコークスを炭素原料粒子として
用いれば、該炭素化物が芯となって高強度の炭素成形体
が得られ、特に該炭素成形体用コークスがニードルコー
クスの場合には、従来問題となっていた黒鉛化等の高温
焼成時におけるパッフィングを抑制して不良品の発生を
最小限に食い止め、高密度且つ高強度の炭素成形体の製
造を可能とするものであって、多大な工業的利益を提供
するものである。 (Effect of the Invention) According to the method of the present invention, a high-strength coke in which a carbonized material having an average aspect ratio of 1.5 or more such as needle coke and / or carbon fiber is uniformly dispersed and mixed therein can be produced. When such coke is used as carbon raw material particles, a high-strength carbon molded product is obtained by using the carbonized material as a core, and particularly when the coke for carbon molded product is needle coke, a conventional problem has been encountered. Suppresses puffing during high-temperature firing such as graphitization, minimizes the occurrence of defective products, and enables the production of high-density and high-strength carbon molded products, providing a great industrial advantage. Is what you do.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】原料油にアスペクト比の平均が1.5以上で
ある炭素化物を均一に分散・混合せしめた後コークス化
することを特徴とするコークスの製造方法。1. A method for producing coke, which comprises uniformly dispersing and mixing a carbonized material having an average aspect ratio of 1.5 or more in a raw material oil and then coking.
JP1194818A 1988-07-29 1989-07-27 Coke production method Expired - Fee Related JP2855678B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63-189834 1988-07-29
JP18983488 1988-07-29

Publications (2)

Publication Number Publication Date
JPH02132184A JPH02132184A (en) 1990-05-21
JP2855678B2 true JP2855678B2 (en) 1999-02-10

Family

ID=16247990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1194818A Expired - Fee Related JP2855678B2 (en) 1988-07-29 1989-07-27 Coke production method

Country Status (2)

Country Link
JP (1) JP2855678B2 (en)
DE (1) DE3924965A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005179669A (en) * 2003-12-18 2005-07-07 Sgl Carbon Ag Carbon fiber-reinforced coke

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573086A (en) * 1968-12-10 1971-03-30 Atomic Energy Commission Fibrous carbon or graphite products and method of making same
GB1460876A (en) * 1975-01-03 1977-01-06 Coal Ind Carbon artefacts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005179669A (en) * 2003-12-18 2005-07-07 Sgl Carbon Ag Carbon fiber-reinforced coke

Also Published As

Publication number Publication date
JPH02132184A (en) 1990-05-21
DE3924965A1 (en) 1990-02-01

Similar Documents

Publication Publication Date Title
CA2494161C (en) Process of making graphite articles
EP0453073B1 (en) Improved graphite electrode nipple
US7276284B2 (en) Carbon fiber reinforced coke from the delayed coker
US20140084525A1 (en) Method for manufacturing a refractory for an inner lining of a blast furnace and blast furnace having the inner lining
US7544316B2 (en) Process for making graphite articles
JP2855678B2 (en) Coke production method
US5215651A (en) Process for producing coke
JP4220777B2 (en) Amorphous coke for special carbon material and its manufacturing method
JP2689509B2 (en) Method for producing needle coke for carbon molded body
JPS5978914A (en) Manufacture of special carbonaceous material
JPS6016806A (en) Manufacture of formed carbon
JP2689510B2 (en) Manufacturing method of needle coke for carbon compact
JPH0764528B2 (en) Method for producing high-quality carbonaceous compact
JPH06102530B2 (en) Method for manufacturing graphite molded body
JPH11130535A (en) Production of carbon material
JP2004124014A (en) Calcined coke and its production method
JPH0791107B2 (en) Method for producing isotropic graphite material having high density and high strength
RU2045473C1 (en) Method for manufacture of graphitized products
JPH0551258A (en) Production of high density and high strength graphite material
Beech et al. The manufacture of artefacts from coal
JPH0273885A (en) Production of needle coke
JPS6153104A (en) Production of high-strength carbon material
JPH02296897A (en) Production of raw material for high-density, high-strength carbon material

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees