JPH10338512A - Graphitization electric furnace - Google Patents
Graphitization electric furnaceInfo
- Publication number
- JPH10338512A JPH10338512A JP9147781A JP14778197A JPH10338512A JP H10338512 A JPH10338512 A JP H10338512A JP 9147781 A JP9147781 A JP 9147781A JP 14778197 A JP14778197 A JP 14778197A JP H10338512 A JPH10338512 A JP H10338512A
- Authority
- JP
- Japan
- Prior art keywords
- carbon powder
- electrodes
- furnace body
- furnace
- region
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、黒鉛化電気炉に関
するものである。The present invention relates to a graphitizing electric furnace.
【０００２】[0002]
【従来の技術】従来より、カーボン粉末を不活性雰囲気
下で約３１００℃以上に加熱処理することによって、前
記カーボン粉末を黒鉛化して工業的に人造の黒鉛粉末を
製造することが行われている。2. Description of the Related Art Hitherto, carbon powder has been industrially manufactured by heat-treating carbon powder in an inert atmosphere at a temperature of about 3100 ° C. or more to graphitize the carbon powder. .
【０００３】この種の黒鉛粉末の製造には、アチソン炉
等の黒鉛化電気炉が用いられており、直接通電によるジ
ュール熱でカーボン粉末を加熱して黒鉛化するようにし
ているが、一般的に、既存の黒鉛化電気炉は、バッチ式
で黒鉛粉末の製造を行うようにしたものであった為に生
産性が悪く、連続的にカーボン粉末を加熱処理して黒鉛
粉末を製造し得るような黒鉛化電気炉の開発が望まれて
いる。An electric furnace for graphitization such as an Acheson furnace is used for the production of this type of graphite powder, and the carbon powder is heated and graphitized by Joule heat generated by direct energization. In addition, the existing graphitizing electric furnace was designed to produce graphite powder in a batch system, so the productivity was poor, and the carbon powder could be continuously heated to produce graphite powder. The development of a simple graphitizing electric furnace is desired.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、現時点
で提案されている連続式の黒鉛化電気炉の殆どのもの
は、対にした黒鉛電極の相互間にカーボン粉末を充填
し、該カーボン粉末を移動させながら両黒鉛電極間に通
電してジュール熱により前記カーボン粉末を加熱すると
共に、両黒鉛電極自体もジュール熱により発熱させて積
極的にヒータとして利用しながら炉内を約３１００℃以
上に保持し、カーボン粉末を連続的に黒鉛化するという
設計思想に立脚したものであった為、黒鉛電極が約３１
００℃以上もの高温に晒された際に昇華して損耗すると
いう問題が避けられず、この黒鉛電極の損耗の問題は、
連続式の黒鉛化電気炉の実用化に向けた大きな障害とな
っていた。However, most of the continuous graphitizing electric furnaces proposed at the present time are filled with carbon powder between the paired graphite electrodes, and the carbon powder is moved. The carbon powder is heated by Joule heat by applying a current between both graphite electrodes, and the graphite electrodes themselves are also heated by Joule heat to maintain the inside of the furnace at about 3100 ° C. or more while actively using as a heater. Since it was based on the design concept of continuously graphitizing carbon powder, the graphite electrode was
The problem of sublimation and wear when exposed to temperatures as high as 00 ° C. or higher is inevitable.
This was a major obstacle to the commercialization of the continuous graphitizing electric furnace.
【０００５】本発明は上述の実情に鑑みてなしたもの
で、黒鉛電極を使用せずにカーボン粉末を良好に高温加
熱して連続的に黒鉛粉末を製造し得るようにした実用性
の高い黒鉛化電気炉を提供することを目的としている。[0005] The present invention has been made in view of the above-mentioned circumstances, and is a highly practical graphite capable of continuously producing graphite powder by heating carbon powder satisfactorily at a high temperature without using a graphite electrode. The purpose is to provide a chemical electric furnace.
【０００６】[0006]
【課題を解決するための手段】本発明は、水冷構造とし
た炉本体にカーボン粉末投入口と黒鉛粉末回収口とを対
向配置し、前記炉本体内におけるカーボン粉末投入口と
黒鉛粉末回収口との間の適宜な中途位置を黒鉛化領域と
して該黒鉛化領域を挟んで対峙するよう複数組の電極を
前記炉本体内に配設し、各組の電極に対し順次タイミン
グをずらして通電し得るよう構成したことを特徴とする
黒鉛化電気炉、に係るものである。According to the present invention, a carbon powder charging port and a graphite powder collecting port are disposed opposite to each other in a furnace body having a water-cooled structure, and a carbon powder charging port and a graphite powder collecting port in the furnace body are connected to each other. A plurality of sets of electrodes are arranged in the furnace body so as to face each other across the graphitized area with a suitable intermediate position as a graphitized area, and power can be supplied to each set of electrodes sequentially at a shifted timing. It relates to a graphitizing electric furnace characterized by having such a configuration.
【０００７】従って、本発明では、カーボン粉末投入口
から炉本体内にカーボン粉末を充填し、各組の電極に対
し順次タイミングをずらして通電すると、各組の電極間
を流れる電流は全て黒鉛化領域を通過して流れ、該黒鉛
化領域における電流密度が外周囲より高められてジュー
ル熱による発熱量が増加し、一方、水冷構造となってい
る炉本体付近では水冷より冷却が成されるので、炉本体
内に充填されたカーボン粉末は、黒鉛化領域においての
み局所的に高温加熱されて黒鉛化されることになり、カ
ーボン粉末投入口から新たなカーボン粉末を投入しなが
ら黒鉛化領域で黒鉛化した黒鉛粉末を黒鉛粉末回収口か
ら回収するようにすれば、連続的に黒鉛粉末を製造する
ことが可能となる。Therefore, according to the present invention, when carbon powder is charged into the furnace body from the carbon powder inlet and current is sequentially supplied to each set of electrodes at a shifted timing, all current flowing between each set of electrodes is graphitized. It flows through the region, the current density in the graphitized region is increased from the outer periphery, and the amount of heat generated by Joule heat increases.On the other hand, cooling is performed by water cooling near the furnace body having a water cooling structure. However, the carbon powder filled in the furnace body is locally heated to a high temperature only in the graphitization region and is graphitized. If the converted graphite powder is recovered from the graphite powder recovery port, it becomes possible to continuously produce graphite powder.
【０００８】このとき、黒鉛化領域におけるカーボン粉
末は、通電によるジュール熱で自ら発熱して黒鉛化し、
しかも、その周囲のカーボン粉末は、カーボン粉末投入
口から黒鉛粉末回収口へと向かうカーボン粉末又は黒鉛
粉末の流れを取り囲んで炉本体内に留まり、内側から徐
々に黒鉛化しつつ炉本体側に対する断熱材として機能す
るので、黒鉛粉末回収口から回収される黒鉛粉末に不純
物が紛れ込む余地がなくなって純粋な黒鉛粉末のみを良
好に回収することが可能となり、また、炉本体や電極に
対する焼損が緩和されて該炉本体や電極の耐久性を向上
することが可能となる。At this time, the carbon powder in the graphitized region generates heat by Joule heat by energization and becomes graphitized by itself.
Moreover, the surrounding carbon powder stays in the furnace body surrounding the flow of the carbon powder or the graphite powder from the carbon powder input port to the graphite powder recovery port, and is gradually graphitized from the inside while the heat insulating material with respect to the furnace body side. Since there is no room for impurities to get into the graphite powder recovered from the graphite powder recovery port, it becomes possible to recover only pure graphite powder in good condition, and the burning of the furnace body and electrodes is reduced. The durability of the furnace body and the electrodes can be improved.
【０００９】尚、本発明においては、例えば、炉本体の
胴部を円筒状に形成すると共に、カーボン粉末投入口を
前記炉本体の上部中央に設け且つ黒鉛粉末回収口を前記
炉本体の下部中央に設け、各組の電極を前記炉本体の胴
部の直径方向に対峙するよう該胴部の内側壁に環状に配
設することが可能である。In the present invention, for example, the body of the furnace body is formed in a cylindrical shape, a carbon powder inlet is provided in the upper center of the furnace body, and a graphite powder recovery port is provided in the lower center of the furnace body. , And each set of electrodes can be annularly disposed on the inner wall of the body of the furnace body so as to face in the diametrical direction of the body of the furnace body.
【００１０】また、各組の電極に対し順次タイミングを
ずらして通電し得るよう構成するにあたっては、各組の
電極を順次タイミングをずらして電源と接続する電流制
御装置を備えることが好ましい。[0010] Further, in order to make it possible to energize each set of electrodes with a sequentially shifted timing, it is preferable to provide a current control device for connecting each set of electrodes to a power supply with a sequentially shifted timing.
【００１１】[0011]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照しつつ説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１及び図２は本発明を実施する形態の一
例を示すもので、図中１は水冷構造とした炉本体を示
し、該炉本体１の上部中央には、原料であるカーボン粉
末２をスクリューコンベヤ３を介して投入し得るように
したカーボン粉末投入口４が設けられ、前記炉本体１の
下部中央には、前記カーボン粉末２を加熱処理すること
により黒鉛化した黒鉛粉末５をスクリューコンベヤ６を
介して回収し得るようにした黒鉛粉末回収口７が設けら
れており、斯かる炉本体１の内部は、アルゴンガス等の
不活性ガス雰囲気、若しくは真空として外気と遮断され
てある。FIGS. 1 and 2 show an embodiment of the present invention. In FIG. 1, a furnace body 1 having a water-cooled structure is shown. 2 is provided through a screw conveyor 3 so that a carbon powder inlet 4 is provided. In the center of the lower part of the furnace main body 1, graphite powder 5 which has been graphitized by heat-treating the carbon powder 2 is provided. A graphite powder recovery port 7 is provided which can be recovered via a screw conveyor 6, and the inside of the furnace main body 1 is shut off from the outside air as an inert gas atmosphere such as an argon gas or a vacuum. .
【００１３】ここで、図示する例における炉本体１は、
カーボン粉末投入口４と黒鉛粉末回収口７とを縦方向に
結ぶ軸線Ｏを中心として、その胴部を円筒状に、また、
その上部をカーボン粉末２の安息角に対応した円錐状に
夫々形成してあり、その底部については、平坦な円盤状
として形成してある。Here, the furnace body 1 in the illustrated example is
A body is formed in a cylindrical shape around an axis O connecting the carbon powder input port 4 and the graphite powder recovery port 7 in the vertical direction.
The upper part is formed in a conical shape corresponding to the angle of repose of the carbon powder 2, and the lower part is formed as a flat disk.
【００１４】尚、炉本体１の水冷構造については、従来
周知の水冷手段を講じれば良く、炉本体１の壁部分を水
冷ジャケットとしたり、或いは、壁部分に多数の流路を
形成する等して、これら水冷ジャケットや流路に冷水を
循環供給し得るようにすれば良い。The water-cooling structure of the furnace body 1 may employ a conventionally known water-cooling means. For example, the wall portion of the furnace body 1 may be a water-cooled jacket, or a number of flow paths may be formed in the wall portion. Thus, it is sufficient that cold water can be circulated and supplied to these water cooling jackets and flow paths.
【００１５】更に、本形態例においては、前記炉本体１
内におけるカーボン粉末投入口４と黒鉛粉末回収口７と
の間の適宜な中途位置を黒鉛化領域８（図中におけるク
ロスハッチ部分）としており、該黒鉛化領域８と同じ高
さ位置における炉本体１の胴部内側壁には、該胴部の直
径方向に対峙する、即ち前記黒鉛化領域８を挟んで対峙
するよう複数組の銅製等の導電性材料による電極９ａ，
９ｂが環状に配設されており、各組の電極９ａ，９ｂに
対し順次タイミングをずらして通電し得るよう電流制御
装置１０を介して電源１１が接続されている。Further, in this embodiment, the furnace body 1
A suitable intermediate position between the carbon powder input port 4 and the graphite powder recovery port 7 in the inside is a graphitized region 8 (cross hatched portion in the figure), and the furnace body at the same height position as the graphitized region 8 A plurality of sets of electrodes 9a made of a conductive material made of copper or the like are provided on the inner wall of the body 1 so as to face each other in the diameter direction of the body, that is, to face each other across the graphitized region 8.
9b is arranged in a ring shape, and a power supply 11 is connected via a current control device 10 so as to be able to energize the electrodes 9a and 9b of each set sequentially at different timings.
【００１６】尚、炉本体１内における少くとも電極９
ａ，９ｂ周辺の所要範囲に亘って絶縁を施したり、或い
は、炉本体１自体の材質を工業用硬質プラスチック等の
絶縁材質としておくことは勿論であり、また、電源１１
は交流であっても直流であっても良い。At least the electrodes 9 in the furnace body 1
The furnace body 1 itself may be insulated over a required range around a and 9b, or the material of the furnace body 1 itself may be an insulating material such as industrial hard plastic.
May be AC or DC.
【００１７】而して、カーボン粉末投入口４から炉本体
１内にカーボン粉末２を充填し、各組の電極９ａ，９ｂ
に対し電流制御装置１０により順次タイミングをずらし
て電源１１を接続して通電すると、特に図２に示す如
く、各組の電極９ａ，９ｂ間を流れる電流は全て黒鉛化
領域８を通過して流れ、該黒鉛化領域８における電流密
度が外周囲より高められてジュール熱による発熱量が増
加し、一方、水冷構造となっている炉本体１付近では水
冷より冷却が成されるので、炉本体１内に充填されたカ
ーボン粉末２は、黒鉛化領域８においてのみ局所的に高
温加熱されて黒鉛化されることになる。The furnace body 1 is filled with the carbon powder 2 through the carbon powder inlet 4, and the electrodes 9a, 9b of each set are filled.
In contrast, when the power supply 11 is connected and energized with the current controller 10 sequentially shifting the timing, all the current flowing between the electrodes 9a and 9b of each set flows through the graphitized region 8 as shown in FIG. Since the current density in the graphitized region 8 is higher than that of the outer periphery, the amount of heat generated by Joule heat increases. On the other hand, the vicinity of the furnace body 1 having a water-cooled structure is cooled by water cooling. The carbon powder 2 filled therein is locally heated to a high temperature only in the graphitized region 8 to be graphitized.
【００１８】依って、カーボン粉末投入口４から新たな
カーボン粉末２を投入しながら黒鉛化領域８で黒鉛化し
た黒鉛粉末５を黒鉛粉末回収口７から回収するようにす
れば、連続的に黒鉛粉末５を製造することが可能とな
る。Accordingly, if the graphite powder 5 graphitized in the graphitized area 8 is recovered from the graphite powder recovery port 7 while the new carbon powder 2 is charged from the carbon powder input port 4, the graphite can be continuously obtained. Powder 5 can be produced.
【００１９】このとき、黒鉛化領域８におけるカーボン
粉末２は、通電によるジュール熱で自ら発熱して黒鉛化
し、しかも、その周囲のカーボン粉末２は、カーボン粉
末投入口４から黒鉛粉末回収口７へと向かうカーボン粉
末２又は黒鉛粉末５の流れを取り囲んで炉本体１内に留
まり、内側から徐々に黒鉛化しつつ炉本体１側に対する
断熱材として機能するので、黒鉛粉末回収口７から回収
される黒鉛粉末５に不純物が紛れ込む余地がなくなって
純粋な黒鉛粉末５のみを良好に回収することが可能とな
り、また、炉本体１や電極９ａ，９ｂに対する焼損が緩
和されて該炉本体１や電極９ａ，９ｂの耐久性を向上す
ることが可能となる。At this time, the carbon powder 2 in the graphitized region 8 generates heat by Joule heat by energization and becomes graphitized, and the surrounding carbon powder 2 is transferred from the carbon powder input port 4 to the graphite powder recovery port 7. And stays in the furnace body 1 surrounding the flow of the carbon powder 2 or the graphite powder 5 toward the furnace and functions as a heat insulating material for the furnace body 1 while gradually graphitizing from the inside. There is no room for impurities to get into the powder 5 and it becomes possible to collect only the pure graphite powder 5 satisfactorily. Moreover, burning of the furnace body 1 and the electrodes 9a and 9b is reduced, and the furnace body 1 and the electrodes 9a and 9a are reduced. 9b can be improved in durability.
【００２０】従って上記形態例によれば、通電による発
熱量の大きな黒鉛電極を使用しなくても、通常の銅製等
の電極９ａ，９ｂを使用してカーボン粉末２を良好に高
温加熱することができるので、黒鉛電極の損耗の問題を
考慮する必要がなくなり、しかも、炉本体１や電極９
ａ，９ｂに対する焼損を緩和して該炉本体１や電極９
ａ，９ｂの耐久性を向上することができるので、連続的
にカーボン粉末２を加熱処理して黒鉛粉末５を製造し得
る黒鉛化電気炉の実用化を図ることができる。Therefore, according to the above embodiment, it is possible to satisfactorily heat the carbon powder 2 at a high temperature by using the normal electrodes 9a and 9b made of copper or the like without using the graphite electrode which generates a large amount of heat upon energization. Therefore, there is no need to consider the problem of graphite electrode wear, and the furnace body 1 and the electrode 9
a, 9b to reduce the burning of the furnace body 1 and the electrodes 9
Since the durability of a and 9b can be improved, it is possible to commercialize a graphitizing electric furnace that can continuously heat-treat the carbon powder 2 to produce the graphite powder 5.
【００２１】また、黒鉛粉末回収口７から回収される黒
鉛粉末５に不純物が紛れ込む余地をなくして純粋な黒鉛
粉末５のみを良好に回収することができるので、製造さ
れる黒鉛粉末５の品質を大幅に向上することができる。Further, since there is no room for impurities to enter the graphite powder 5 recovered from the graphite powder recovery port 7 and only the pure graphite powder 5 can be recovered satisfactorily, the quality of the graphite powder 5 to be manufactured can be improved. It can be greatly improved.
【００２２】尚、本発明の黒鉛化電気炉は、上述の形態
例にのみ限定されるものではなく、カーボン粉末投入口
と黒鉛粉末回収口の対向方向は上下方向以外であっても
良いこと、炉本体の形状は図示する例以外に球形等の様
々な形状を採用し得ること、また、各電極を黒鉛化領域
を挟んで対峙するよう三次元的に配置しても良いこと、
その他、本発明の要旨を逸脱しない範囲内において種々
変更を加え得ることは勿論である。It should be noted that the graphitizing electric furnace of the present invention is not limited to the above-described embodiment, and that the facing direction of the carbon powder inlet and the graphite powder recovery port may be other than the vertical direction. The shape of the furnace body can adopt various shapes such as a sphere other than the illustrated example, and that the electrodes may be three-dimensionally arranged to face each other with the graphitized region interposed therebetween,
In addition, it goes without saying that various changes can be made without departing from the spirit of the present invention.
【００２３】[0023]
【発明の効果】上記した本発明の黒鉛化電気炉によれ
ば、下記の如き種々の優れた効果を奏し得る。According to the graphitizing electric furnace of the present invention described above, various excellent effects as described below can be obtained.
【００２４】（Ｉ）通電による発熱量の大きな黒鉛電極
を使用しなくても、通常の銅製等の電極を使用してカー
ボン粉末を良好に高温加熱することができるので、黒鉛
電極の損耗の問題を考慮する必要がなくなり、しかも、
炉本体や電極に対する焼損を緩和して該炉本体や電極の
耐久性を向上することができるので、連続的にカーボン
粉末を加熱処理して黒鉛粉末を製造し得る黒鉛化電気炉
の実用化を図ることができる。(I) Since the carbon powder can be satisfactorily heated at a high temperature using an ordinary electrode made of copper or the like without using a graphite electrode which generates a large amount of heat upon energization, there is a problem that the graphite electrode is worn. Need to be considered, and
Since the durability of the furnace body and the electrodes can be improved by alleviating the burnout of the furnace body and the electrodes, the commercialization of a graphitizing electric furnace capable of continuously heating the carbon powder to produce graphite powder has been developed. Can be planned.
【００２５】（ＩＩ）黒鉛粉末回収口から回収される黒
鉛粉末に不純物が紛れ込む余地をなくして純粋な黒鉛粉
末のみを良好に回収することができるので、製造される
黒鉛粉末の品質を大幅に向上することができる。(II) Since there is no room for impurities to enter the graphite powder recovered from the graphite powder recovery port, only pure graphite powder can be satisfactorily recovered, so that the quality of the graphite powder to be produced is greatly improved. can do.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明を実施する形態の一例を示す断面図であ
る。FIG. 1 is a cross-sectional view illustrating an example of an embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ方向の矢視図である。FIG. 2 is a view in the direction of arrows II-II in FIG.
１ 炉本体 ４ カーボン粉末投入口 ７ 黒鉛粉末回収口 ８ 黒鉛化領域 ９ａ 電極 ９ｂ 電極 １０ 電流制御装置 １１ 電源 DESCRIPTION OF SYMBOLS 1 Furnace main body 4 Carbon powder input port 7 Graphite powder recovery port 8 Graphitized area 9a Electrode 9b Electrode 10 Current control device 11 Power supply
Claims (3)
入口と黒鉛粉末回収口とを対向配置し、前記炉本体内に
おけるカーボン粉末投入口と黒鉛粉末回収口との間の適
宜な中途位置を黒鉛化領域として該黒鉛化領域を挟んで
対峙するよう複数組の電極を前記炉本体内に配設し、各
組の電極に対し順次タイミングをずらして通電し得るよ
う構成したことを特徴とする黒鉛化電気炉。A carbon powder input port and a graphite powder recovery port are disposed opposite to each other in a furnace body having a water-cooled structure, and an appropriate halfway position between the carbon powder input port and the graphite powder recovery port in the furnace main body is determined. A plurality of sets of electrodes are arranged in the furnace body so as to face each other across the graphitized area as a graphitized area, and it is configured to be able to energize each set of electrodes sequentially at a shifted timing. Graphitizing electric furnace.
に、カーボン粉末投入口を前記炉本体の上部中央に設け
且つ黒鉛粉末回収口を前記炉本体の下部中央に設け、各
組の電極を前記炉本体の胴部の直径方向に対峙するよう
該胴部の内側壁に環状に配設したことを特徴とする請求
項１に記載の黒鉛化電気炉。2. A furnace body is formed in a cylindrical shape, a carbon powder inlet is provided in the upper center of the furnace body, and a graphite powder recovery port is provided in a lower center of the furnace body. 2. The graphitizing electric furnace according to claim 1, wherein a ring is disposed on an inner wall of the body so as to face in a diametrical direction of the body of the furnace body.
電源と接続する電流制御装置を備えたことを特徴とする
請求項１又は２に記載の黒鉛化電気炉。3. The graphitizing electric furnace according to claim 1, further comprising a current control device for connecting each set of electrodes to a power source at sequentially shifted timings.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14778197A JP4061669B2 (en) | 1997-06-05 | 1997-06-05 | Graphitized electric furnace |
| US09/089,354 US6038247A (en) | 1997-06-05 | 1998-06-03 | Graphitizing electric furnace |
| KR1019980020501A KR100348339B1 (en) | 1997-06-05 | 1998-06-03 | Graphitizing electric furnace |
| CA002239670A CA2239670C (en) | 1997-06-05 | 1998-06-04 | Graphitizing electric furnace |
| AT98304457T ATE201186T1 (en) | 1997-06-05 | 1998-06-05 | ELECTRIC OVEN FOR GRAPHITIZATION |
| EP98304457A EP0882672B1 (en) | 1997-06-05 | 1998-06-05 | Graphitising electric furnace |
| DE69800784T DE69800784T2 (en) | 1997-06-05 | 1998-06-05 | Electric graphitization furnace |
| CNB981029221A CN1174209C (en) | 1997-06-05 | 1998-06-05 | Graphitizing electric furnace |
| HK99103053A HK1018092A1 (en) | 1997-06-05 | 1999-07-15 | Graphitizing electric furnace. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14778197A JP4061669B2 (en) | 1997-06-05 | 1997-06-05 | Graphitized electric furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10338512A true JPH10338512A (en) | 1998-12-22 |
| JP4061669B2 JP4061669B2 (en) | 2008-03-19 |
Family
ID=15438053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14778197A Expired - Fee Related JP4061669B2 (en) | 1997-06-05 | 1997-06-05 | Graphitized electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4061669B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012043402A1 (en) | 2010-09-30 | 2012-04-05 | 株式会社Ihi | Graphitization furnace and method for producing graphite |
| WO2012165421A1 (en) | 2011-05-31 | 2012-12-06 | 株式会社Ihi | Graphitization furnace and method for producing graphite |
| CN116119656A (en) * | 2023-03-01 | 2023-05-16 | 深圳市翔丰华科技股份有限公司 | Low-energy-consumption graphitizing furnace and graphitizing process for graphite cathode material of lithium ion battery |
-
1997
- 1997-06-05 JP JP14778197A patent/JP4061669B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012043402A1 (en) | 2010-09-30 | 2012-04-05 | 株式会社Ihi | Graphitization furnace and method for producing graphite |
| JP2014210710A (en) * | 2010-09-30 | 2014-11-13 | 株式会社Ihi | Graphitization furnace and method of producing graphite |
| US9618267B2 (en) | 2010-09-30 | 2017-04-11 | Ihi Corporation | Graphitization furnace and method for producing graphite |
| WO2012165421A1 (en) | 2011-05-31 | 2012-12-06 | 株式会社Ihi | Graphitization furnace and method for producing graphite |
| US9139438B2 (en) | 2011-05-31 | 2015-09-22 | Ihi Corporation | Graphitization furnace and method for producing graphite |
| CN116119656A (en) * | 2023-03-01 | 2023-05-16 | 深圳市翔丰华科技股份有限公司 | Low-energy-consumption graphitizing furnace and graphitizing process for graphite cathode material of lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4061669B2 (en) | 2008-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6013467B2 (en) | Heating parts for crystal growth equipment | |
| US6038247A (en) | Graphitizing electric furnace | |
| GB1470640A (en) | Process and an apparatbs for graphitising carbon bodies | |
| JPH10338512A (en) | Graphitization electric furnace | |
| CN113578211A (en) | A energy-saving high-efficient oxidation equipment for zinc oxide production | |
| JP4061704B2 (en) | Graphitized electric furnace | |
| CN204906739U (en) | Quartzy heat lamp of sectional type | |
| JP4151111B2 (en) | Graphitized electric furnace | |
| JPH11335107A (en) | Electric furnace for graphitization | |
| JPS63232422A (en) | Thermal treatment equipment for semiconductor wafer | |
| CN213680980U (en) | Thermal field device for improving material melting efficiency | |
| JPH11335111A (en) | Electric furnace for graphitization | |
| JP4677667B2 (en) | Graphitization apparatus and graphitization method | |
| JP2002167208A (en) | Continuous type graphitization furnace | |
| JP4147617B2 (en) | Graphitized electric furnace | |
| JPH11325744A (en) | Graphitization electric furnace | |
| US3461214A (en) | Arc wheel electrode | |
| JPH11335113A (en) | Electric furnace for graphitization | |
| JPH0454225Y2 (en) | ||
| JPH11335112A (en) | Electric furnace for graphitization | |
| US855441A (en) | Cooling-jacket for electric-furnace electrodes. | |
| JP4281123B2 (en) | Electric furnace | |
| JP3768093B2 (en) | MoSi2 module heater with excellent heat uniformity | |
| JPH11335110A (en) | Electric furnace for graphitization | |
| CN206143248U (en) | Thermal field structure in vacuum annealing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20061215 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070821 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20071019 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20071204 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20071217 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110111 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |