JPH07197030A - Production of formed coke - Google Patents
Production of formed cokeInfo
- Publication number
- JPH07197030A JPH07197030A JP6000414A JP41494A JPH07197030A JP H07197030 A JPH07197030 A JP H07197030A JP 6000414 A JP6000414 A JP 6000414A JP 41494 A JP41494 A JP 41494A JP H07197030 A JPH07197030 A JP H07197030A
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- JP
- Japan
- Prior art keywords
- coal
- coke
- less
- particle size
- adjusted
- 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.)
- Withdrawn
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- Coke Industry (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は地球上に安価で多量に存
在する劣質炭（高揮発分、低粘結性）を配合しても、冷
間および反応後強度の高い成型コークスを得ることがで
きる成型コークス製造方法に関するものである。BACKGROUND OF THE INVENTION The present invention is capable of obtaining molded coke having high strength after cold and reaction even if poor quality coal (high volatile content, low caking property) which is inexpensive and exists in large quantities on the earth is blended. The present invention relates to a method for producing a molded coke capable of producing.
【０００２】[0002]
【従来の技術】従来、高炉用コークスは原料炭とよばれ
る良質な石炭を原料として用いられてきた。成型コーク
スの原料においても、原料炭より性質は劣るが、粘結性
を有する一般炭とよばれる石炭を主な原料としている。
このような石炭は比較的高価であり、より安い石炭を使
用することでコークス製造におけるコストダウンに大き
く貢献できる。2. Description of the Related Art Conventionally, high quality coal called coking coal has been used as a raw material for blast furnace coke. Although the raw material of the molded coke is inferior to the raw coal, the main raw material is coal, which is called coking coal.
Such coal is relatively expensive, and the use of cheaper coal can greatly contribute to cost reduction in coke production.
【０００３】より安い石炭とは、石炭化度が低く、揮発
分の含有量が多く、多量に酸素を含む石炭であり、この
ような石炭は粘結性や熱可塑性に劣るか、まったく無
く、さらには、他の石炭と配合して用いる場合、他の石
炭の粘結性をも阻害してしまう。したがって、このよう
な石炭を使用するコークス強度が非常に低いものとなっ
てしまう。The cheaper coal is a coal having a low degree of coalification, a high content of volatile components, and a large amount of oxygen, and such coal is inferior in caking property or thermoplasticity or does not exist at all. Furthermore, when used in combination with other coal, it also impairs the caking properties of other coal. Therefore, the coke strength using such coal becomes very low.
【０００４】従来、このような劣質炭は、ガス化、液
化、燃焼用などに使用されており、成型コークス原料と
しては使用されていない。Conventionally, such poor quality coal has been used for gasification, liquefaction, combustion, etc., and has not been used as a raw material for forming coke.
【０００５】例えば、このような劣質炭をコークス原料
として使用する技術として、特開昭５３−１２１００１
にあるような瀝青物のような粘結剤を補填する方法や、
特開昭５６−１３６８８１にあるように石炭を一度熱処
理して半生コークス（チャー化）し、コークス原料とし
て用いる方法が提案されている。[0005] For example, as a technique of using such inferior coal as a raw material for coke, Japanese Patent Laid-Open No. 53-12001.
A method of supplementing a binder such as a bituminous substance,
As disclosed in JP-A-56-136881, a method has been proposed in which coal is once heat-treated to be semi-raw coke (char) and used as a coke raw material.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うな方法では、瀝青物を購入あるいは製造する必要があ
ることや瀝青物はかならずしも、石炭質とは同じではな
く、均質なコークスがえられないこと、さらには、瀝青
物を過剰に添加すると膨脹を促進しコークス強度に悪影
響を起こすなどの欠点がある。また、石炭を一度熱処理
して半生コークス（チャー化）する場合には、同時に生
成してくるガスやタールの使用方法を検討する必要があ
り、コスト的に不利な点が多い。したがって、この様な
方法を安価で品質の悪い石炭に適用してコークス化する
場合には、おのずとその使用量が限られてしまう。However, in such a method, it is necessary to purchase or manufacture a bituminous product, and the bituminous product is not always the same as the quality of coal, and a homogeneous coke cannot be obtained. Further, there is a drawback that excessive addition of bituminous material promotes expansion and adversely affects coke strength. In addition, when heat treating coal once to make semi-raw coke (charging), it is necessary to consider how to use the gas and tar that are simultaneously produced, and there are many cost disadvantages. Therefore, when such a method is applied to inexpensive and poor-quality coal to form coke, the amount of use is naturally limited.
【０００７】本発明の目的は、品質の劣るより安い石炭
を多量に使用しても良好な性質すなわち高強度のコーク
スを得ることのできる成型コークスの製造方法を提供す
ることである。It is an object of the present invention to provide a method for producing a molded coke, which enables to obtain a coke having good properties, that is, high strength, even if a large amount of cheaper and less expensive coal is used.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、粘結力指数が５０〜８０％、揮発分が１
０〜３５％である石炭または上記条件に調整された配合
炭のうち０．０５ｍｍ未満 ０〜２０ｗｔ％、０．０５
〜１．５ｍｍ ５０〜１００ｗｔ％に粒度調整した該石
炭または配合炭を、９９〜８５ｗｔ％配合し、粘結力指
数０〜５０％の劣質炭のうち０．１ｍｍ未満 ０〜２０
ｗｔ％、０．１〜４．０ｍｍ ５０〜１００ｗｔ％とな
るように粒度調整した該石炭を、成型コークス原料全重
量に対し、１〜１５ｗｔ％配合して、成型した後に、シ
ャフト炉で該成型炭を乾留することを特徴とする。ま
た、粘結力指数が７０〜９５％、揮発分が１５〜３５
％、最高流動度がｌｏｇｄｄｐｍ２．０〜４．５である
石炭または上記条件に調整された配合炭のうち０．０５
ｍｍ未満 ０〜２０ｗｔ％、０．０５〜１．５ｍｍ ５
０〜１００ｗｔ％に粒度調整した該石炭または配合炭
を、成型コークス全重量に対し、８４〜６０ｗｔ％配合
し、粘結力指数０〜５０％の劣質炭のうち０．１ｍｍ未
満 ０〜２０ｗｔ％、０．１〜４．０ｍｍ ５０〜１０
０ｗｔ％となるように粒度調整した該劣質炭を、１６〜
４０ｗｔ％配合し、成型した後に、シャフト炉で該成型
炭を乾留することを特徴とする成型コークスの製造方法
を提供するものである。In order to solve the above problems, the present invention has a cohesion index of 50 to 80% and a volatile content of 1%.
0 to 35% or less than 0.05 mm of blended coal adjusted to the above conditions 0 to 20 wt%, 0.05
.About.1.5 mm The coal or blended coal whose particle size is adjusted to 50 to 100 wt% is blended in an amount of 99 to 85 wt%, and less than 0.1 mm of inferior coal having a cohesion index of 0 to 50% 0 to 20
wt%, 0.1-4.0 mm 1 to 15 wt% of the coal whose particle size was adjusted to be 50 to 100 wt% based on the total weight of the forming coke raw material, and the mixture was molded in a shaft furnace after molding. It is characterized by carbonizing carbon. Also, the caking strength index is 70 to 95%, and the volatile content is 15 to 35.
%, Coal having a maximum fluidity of logddpm of 2.0 to 4.5 or blended coal adjusted to the above conditions 0.05
less than mm 0 to 20 wt%, 0.05 to 1.5 mm 5
The coal or blended coal whose particle size is adjusted to 0 to 100 wt% is blended in an amount of 84 to 60 wt% with respect to the total weight of the molding coke, and less than 0.1 mm of inferior coal having a caking strength index of 0 to 50% 0 to 20 wt% , 0.1-4.0 mm 50-10
The inferior coal whose particle size was adjusted to 0 wt% was
The present invention provides a method for producing a molded coke, which comprises blending 40 wt% and molding and then carbonizing the molded coal in a shaft furnace.
【０００９】[0009]
【作用】前述したように、石炭化度が低く、揮発分の含
有量が多く、多量に酸素を含むような安価な石炭を多量
に配合した場合、コークス強度は著しく低下する。しか
し、本発明者らが多くの検討をおこなったところ、劣質
炭の粒度が細かくなるとコークス強度低下に及ぼす影響
が大きいことが判明した。そこで、劣質炭と劣質炭を配
合される方の石炭あるいは配合炭（すなわち成型コーク
ス原料）の粘結性や粒度などについて詳細な検討をおこ
なった結果、粘結力指数が５０〜８０％、揮発分が１０
〜３５％である石炭または上記条件に調整された配合炭
のうち０．０５ｍｍ未満 ０〜２０ｗｔ％、０．０５〜
１．５ｍｍ ５０〜１００ｗｔ％に粒度調整した該石炭
または配合炭を、９９〜８５ｗｔ％配合し、粘結力指数
０〜５０％の劣質炭のうち０．１ｍｍ未満 ０〜２０ｗ
ｔ％、０．１〜４．０ｍｍ ５０〜１００ｗｔ％となるように粒度調整することで、
劣質炭を１５ｗｔ％まで配合でき、高強度のコークスを
得ることができることがわかった。劣質炭の粒度０．１
ｍｍ未満のものが２０％超であると、劣質炭が全体に均
一に分散し、全体に石炭同志の相溶性を悪化させ良質な
コークス組織が得られずコークス強度が低下する。劣質
炭の粒度０．１〜０．４ｍｍものが５０％未満である
と、コークス組織に亀裂が生じコークス強度が低下す
る。また、成型コークス原料の粒度０．０５ｍｍ未満の
ものが２０％超であると、石炭が酸化され石炭同志の相
溶性を悪化させ良質なコークス組織が得られずコークス
強度が低下する。成型コークス原料の粒度０．０５〜
１．５ｍｍのものが５０％未満であると、膨れ融着が起
こり、成型コークスブリケットに割れを生じコークス強
度が低下する。成型コークス原料炭の粒度が１．５ｍｍ
を越えると、膨れ融着が起こり、成型コークスブリケッ
トに割れを生じ強度が低下する。さらに、成型コークス
原料炭の粘結力指数が５０未満であると、粘結性不足か
ら石炭同志の相溶性を悪化させ良質なコークス組織が得
られずコークス強度が低下する。成型コークス原料炭の
粘結力指数が８０％を越えると、膨れ融着が起こり、成
型コークスブリケットに割れを生じコークス強度が低下
する。なお、成型コークス原料炭の揮発分が３５％を越
えると、劣質炭は比較的揮発分が高いため、全体の揮発
分も高くなり、成型コークスに亀裂を生じコークス強度
が低下する。成型コークス原料炭の揮発分が１０％未満
の場合、その粘結力指数は５０〜８０の範囲内には存在
しない。As described above, when a large amount of inexpensive coal having a low degree of coalification, a high volatile content, and a large amount of oxygen is blended, the coke strength is significantly reduced. However, as a result of many studies conducted by the present inventors, it was found that the finer the grain size of the inferior coal, the greater the influence on the decrease in coke strength. Therefore, as a result of detailed study on the caking property and particle size of the poor coal and the coal blending the poor coal or the blended coal (that is, raw material for forming coke), a caking strength index of 50 to 80%, volatilization Minutes are 10
~ 35% of coal or blended coal adjusted to the above conditions is less than 0.05 mm 0-20 wt%, 0.05-
The coal or blended coal having a particle size adjusted to 1.5 mm 50 to 100 wt% is blended at 99 to 85 wt% and less than 0.1 mm of poor coal having a cohesion index of 0 to 50% 0 to 20w
t%, 0.1-4.0 mm 50-100 wt% by adjusting the particle size,
It was found that poor quality coal could be blended up to 15 wt% and high strength coke could be obtained. Poor coal grain size 0.1
If less than 20 mm is more than 20%, inferior coal is evenly dispersed throughout, the compatibility of the coals with each other is deteriorated, a good coke structure cannot be obtained, and coke strength is reduced. If the particle size of inferior coal is 0.1% to 0.4 mm and is less than 50%, cracks occur in the coke structure and the coke strength decreases. Further, if the content of the particle size of the molded coke raw material is less than 0.05 mm is more than 20%, the coal is oxidized, the compatibility between the coals is deteriorated, a good coke structure cannot be obtained, and the coke strength is lowered. Particle size of molded coke raw material 0.05〜
If it is less than 50% in the case of 1.5 mm, swelling and fusion occur, cracking occurs in the molded coke briquette, and coke strength decreases. Grain size of coking coking coal is 1.5mm
If it exceeds the range, swelling and fusion occur, the molded coke briquette cracks, and the strength decreases. Further, if the coke strength index of the shaped coke raw coal is less than 50, the compatibility of the coals is deteriorated due to lack of cohesion, a good coke structure cannot be obtained, and coke strength is lowered. If the cohesive strength index of the shaped coke raw coal exceeds 80%, swelling and fusion occur, cracking occurs in the formed coke briquette, and coke strength decreases. When the volatile content of the forming coke raw coal exceeds 35%, the poor quality coal has a relatively high volatile content, and the total volatile content also increases, causing cracks in the forming coke and lowering the coke strength. When the volatile content of the shaped coke raw coal is less than 10%, the cohesive strength index thereof does not exist within the range of 50 to 80.
【００１０】次に、劣質炭の１５ｗｔ％を越えた配合条
件についてさらに詳しく検討したところ、粘結力指数が
７０〜９５％、揮発分が１５〜３５％、最高流動度がｌ
ｏｇｄｄｐｍ２．０〜４．５である成型コークス原料炭
の０．０５ｍｍ未満 ０〜２０ｗｔ％、０．０５〜１．
５ｍｍ ５０％〜１００ｗｔ％に粒度調整した該石炭
を、８４〜６０ｗｔ％配合し、粘結力指数５０％未満の
劣質炭の０．１ｍｍ未満０〜２０ｗｔ％、０．１〜４．
０ｍｍ ５０〜１００ｗｔ％となるように粒度調整した
該劣質炭を配合すれば、該劣質炭を１６〜４０ｗｔ％ま
で配合しても高強度の成型コークスが得られることがわ
かった。劣質炭の粒度０．１ｍｍ未満のものが２０％超
であると、劣質炭が全体に均一に分散し、全体に石炭同
志の相溶性を悪化させ良質なコークス組織が得られずコ
ークス強度が低下する。劣質炭の粒度０．１〜０．４ｍ
ｍものが５０％未満であると、コークス組織に亀裂が生
じコークス強度が低下する。また、成型コークス原料の
粒度０．０５ｍｍ未満のものが２０％超であると、石炭
が酸化され石炭同志の相溶性を悪化させ良質なコークス
組織が得られずコークス強度が低下する。成型コークス
原料の粒度０．０５〜１．５ｍｍのものが５０％未満で
あると、膨れ融着が起こり、成型コークスブリケットに
割れを生じコークス強度が低下する。Next, when the blending conditions of the poor quality coal exceeding 15 wt% were examined in more detail, the cohesion index was 70 to 95%, the volatile content was 15 to 35%, and the maximum fluidity was 1.
ogddpm 2.0-4.5, less than 0.05 mm of the raw coking coal of coking 0-20 wt%, 0.05-1.
5 mm 50% to 100% by weight of the coal, 84 to 60% by weight of the coal is blended, and the cohesion index of less than 50% is less than 0.1 mm of less than 0.1 mm of 0 to 20% by weight, 0.1 to 4.
It was found that when the inferior coal whose particle size was adjusted to 0 mm 50 to 100 wt% was blended, a high-strength molded coke could be obtained even when the inferior coal was compounded to 16 to 40 wt%. If the proportion of inferior coal having a particle size of less than 0.1 mm is more than 20%, the inferior coal is evenly dispersed throughout the whole, and the compatibility of the coals with each other is deteriorated, so that a good coke structure cannot be obtained and the coke strength is lowered. To do. Poor coal grain size 0.1-0.4m
If m is less than 50%, cracks occur in the coke structure and the coke strength decreases. Further, if the content of the particle size of the molded coke raw material is less than 0.05 mm is more than 20%, the coal is oxidized, the compatibility between the coals is deteriorated, a good coke structure cannot be obtained, and the coke strength is lowered. If the raw material of the molding coke having a particle size of 0.05 to 1.5 mm is less than 50%, swelling and fusion occur, cracking occurs in the molding coke briquette, and the coke strength decreases.
【００１１】さらに、成型コークス原料炭の粘結力指数
が７０％未満であると、粘結性不足から石炭同志の相溶
性を悪化させ良質なコークス組織が得られずコークス強
度が低下する。成型コークス原料炭の粘結力指数が９５
％を越えると、膨れ融着が起こり、成型コークスブリケ
ットに割れを生じ強度がでない。さらに、成型コークス
原料炭の最高流動度がｌｏｇｄｄｐｍ２．０未満である
と、流動性不足から劣質炭を成型コークス原料炭がうま
く囲み込めず相溶性を悪化させ良質なコークス組織が得
られずコークス強度が低下する。成型コークス原料炭の
最高流動度がｌｏｇｄｄｐｍ４．５を越えると、流動性
過多の状態になり膨れ融着が起こり、成型コークスブリ
ケットに割れを生じコークス強度が低下する。Further, if the cohesive strength index of the shaped coke raw coal is less than 70%, the compatibility between the coals is deteriorated due to insufficient cohesiveness, a good coke structure cannot be obtained, and coke strength is lowered. The cohesion index of coking coking coal is 95.
If it exceeds%, swelling and fusion occur and the molded coke briquette cracks, resulting in poor strength. Further, if the maximum fluidity of the shaped coke raw coal is less than logddpm 2.0, the poor coke cannot be surrounded by the formed coke raw coal due to insufficient fluidity, the compatibility is deteriorated, and a good coke structure cannot be obtained. Is reduced. When the maximum fluidity of the shaped coke raw coal exceeds logddpm 4.5, the fluidity becomes excessive and swelling and fusion occur, which causes cracks in the formed coke briquette and lowers the coke strength.
【００１２】なお、成型コークス原料炭の揮発分が３５
％を越えると、劣質炭は比較的揮発分が高いため、全体
の揮発分も高くなり、成型コークスに亀裂を生じコーク
ス強度が低下する。成型コークス原料炭の揮発分が１５
％未満である場合、その粘結力指数は７０〜９５％、最
高流動度はｌｏｇｄｄｐｍ２．０〜４．５の範囲内には
存在しない。なお、本発明において、揮発分が上記範囲
内であれば、成型コークス原料炭の粘結性、流動性の調
整などにタールや軟ピッチなどの粘結剤を適度に補填し
ても良い。It should be noted that the volatile content of the forming coke raw coal is 35
If it exceeds%, the poor coal has a relatively high volatile content, and the total volatile content also increases, causing cracks in the molding coke and lowering the coke strength. Molded coke Coal has a volatile content of 15
When it is less than%, the cohesion index is 70 to 95%, and the maximum fluidity is not within the range of logddpm 2.0 to 4.5. In the present invention, as long as the volatile content is within the above range, a binder such as tar or soft pitch may be appropriately supplemented for adjusting the caking property and fluidity of the raw coking coal.
【００１３】粘結力指数５０％未満の劣質炭の４０ｗｔ
％超配合については、粒度調整ならびに成型コークス原
料炭の粘結性、流動性の調整などいかなる手段をもちい
ても、満足されるコークス強度は得られないことがわか
った。これは、４０ｗｔ％超劣質炭配合では、粘結性を
補うための粘結性制御は、粘結性過多状態になるためで
ある。40 wt of poor quality coal having a cohesion index of less than 50%
It has been found that a coke strength that is not satisfactory cannot be obtained by any means such as adjusting the particle size and adjusting the caking property and fluidity of the raw coke for forming coke in the case of blending exceeding%. This is because the caking control for compensating the caking becomes a caking excessive state in the case of blending 40 wt% ultra-poor coal.
【００１４】なお、本発明において、石炭の０．０５ｍ
ｍ未満 ０〜２０ｗｔ％、０．０５〜１．５ｍｍ ５０
〜１００ｗｔ％に粒度調整するには、例えば、石炭をフ
レットミルなどで０．６ｍｍのふるいを石炭が約６５％
通過する程度に粉砕し、０．６ｍｍのふるい上を同様に
粉砕することを繰返し行うことで可能とである。また、
石炭の０．１ｍｍ 未満０〜２０ｗｔ％、０．１〜４．
０ｍｍ ５０〜１００ｗｔ％に粒度調整するには、例え
ば、石炭をフレットミルなどで３．０ｍｍのふるいを石
炭が約６５％通過する程度に粉砕し、３．０ｍｍのふる
い上を同様に粉砕することを繰返し行うことで可能とな
る。In the present invention, 0.05 m of coal is used.
less than m 0 to 20 wt%, 0.05 to 1.5 mm 50
In order to adjust the particle size to ~ 100 wt%, for example, the coal is passed through a 0.6 mm sieve with a fret mill to obtain about 65% of the coal.
It is possible to repeatedly grind the powder so that it can pass, and similarly grind it on a 0.6 mm sieve. Also,
0 to 20 wt% of coal less than 0.1 mm, 0.1 to 4.
In order to adjust the particle size to 0 mm 50 to 100 wt%, for example, the coal is crushed with a fret mill or the like so that about 65% of the coal passes through a 3.0 mm sieve, and the same is crushed on the 3.0 mm sieve. It becomes possible by repeating.
【００１５】なお、本発明におけるコークス強度とは、
ＤＩ（ドラムインデックス：ドラム１５０回転後の１５
ｍｍ指数）とＣＳＲ（反応後強度）を表すものである。The coke strength in the present invention means
DI (drum index: 15 after 150 drum rotations)
mm index) and CSR (strength after reaction).
【００１６】さらに、本明細書における最高流動度とは
ＪＩＳ８８０１ギーセラープラストメーターによる流動
度測定装置を用いて測定した結果に基づくものである。
また、本明細書における粘結力指数とは石炭利用技術用
語辞典（社団法人燃料協会）Ｐ．２５５にあるように、
０．２５ｍｍ以下の石炭１ｇに０．２５〜０．３ｍｍの
整粒された粉コークス９ｇを混合したものを磁性るつぼ
に入れ、９００℃７分間乾留したのち、その生成物を
０．４２ｍｍでふるい分け、ふるい上質量の百分率で表
示した値である。Further, the maximum fluidity in the present specification is based on the result of measurement using a fluidity measuring device by JIS8801 Giesseler Plastometer.
In addition, the cohesion index in the present specification is a coal utilization technical terminology dictionary (Fuel Association of Japan) P. As in 255,
A mixture of 1 g of coal of 0.25 mm or less and 9 g of 0.25 to 0.3 mm sized powder coke was placed in a magnetic crucible, which was subjected to dry distillation at 900 ° C. for 7 minutes, and then the product was sieved at 0.42 mm. , The value displayed as a percentage of the mass on the sieve.
【００１７】また、本発明における成型条件および乾留
条件は従来の方法の範囲で十分である。The molding conditions and dry distillation conditions in the present invention are sufficient within the range of conventional methods.
【００１８】[0018]
【実施例】第１表に本発明の実施例ならびに比較例を示
す。EXAMPLES Table 1 shows examples and comparative examples of the present invention.
【００１９】石炭または配合炭は数種類の石炭を用いて
調整した、粒度調整については、石炭を過粉砕しないよ
うに粉砕し、各ふるい目のふるいでふるった、ふるい下
粒度と中間粒度のものに調整した。成型炭は粒度調整し
た配合炭と劣質炭を混合し、数％の軟ピッチと混練し、
１５０ｃｃのピロー型成型機で２５ｔ／ｃｍ2 の圧力で
成型した。これを直接燃焼ガスで平均乾留速度２０℃／
分で１０００℃まで乾留し成型コークスを得た。Coal or blended coal was prepared by using several kinds of coal. For the particle size adjustment, the coal was crushed so as not to be over-crushed, and sieved with sieves of each sieve to obtain a particle size under the sieve and an intermediate particle size. It was adjusted. Molded coal is a mixture of blended coal with adjusted particle size and poor quality coal, and kneaded with a few% of soft pitch,
It was molded at a pressure of 25 t / cm 2 using a 150 cc pillow type molding machine. This is directly burnt with an average carbonization rate of 20 ° C /
By dry distillation to 1000 ° C in minutes, a molded coke was obtained.
【００２０】第１表から明らかなように、本発明により
劣質炭を４０％まで配合しても、ＤＩで８０％以上、Ｃ
ＳＲで５５％以上の高強度成型コークスを製造すること
ができる。As is clear from Table 1, even when the poor quality coal is blended up to 40% according to the present invention, the DI is 80% or more and the C
It is possible to produce a high-strength molded coke having an SR of 55% or more.
【００２１】なお、表中の＊印は、本発明の請求項範囲
を越えているものを示す。Incidentally, the * mark in the table indicates that the scope of claims of the present invention is exceeded.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【表２】 [Table 2]
【００２４】[0024]
【発明の効果】以上のように本発明においては石炭の性
状と粒度を調整するだけで、安価な石炭を４０ｗｔ％配
合しても、高強度の成型コークスを得ることができ、成
型コークス製造コストダウンを達成できる。INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to obtain a high-strength molded coke even if 40 wt% of inexpensive coal is blended, simply by adjusting the properties and particle size of the coal. You can achieve down.
Claims (2)
０〜３５％である石炭または上記条件に調整された配合
炭のうち０．０５ｍｍ未満 ０〜２０ｗｔ％、０．０５
〜１．５ｍｍ ５０〜１００ｗｔ％に粒度調整した該石
炭または配合炭を、成型コークス原料全重量に対し９９
〜８５ｗｔ％配合し、粘結力指数０〜５０％の劣質炭の
うち０．１ｍｍ未満 ０〜２０ｗｔ％、０．１〜４．０
ｍｍ５０〜１００ｗｔ％となるように粒度調整した該石
炭を、成型コークス原料全重量に対し１〜１５ｗｔ％配
合して、成型した後にシャフト炉で該成型炭を乾留する
ことを特徴とする成型コークスの製造方法。1. A caking strength index of 50 to 80% and a volatile content of 1
0 to 35% or less than 0.05 mm of blended coal adjusted to the above conditions 0 to 20 wt%, 0.05
-1.5 mm The coal or blended coal whose particle size was adjusted to 50 to 100 wt% was added to 99% of the total weight of the raw material for forming coke.
˜85 wt% is blended and less than 0.1 mm of inferior coal with a caking strength index of 0 to 50% 0 to 20 wt%, 0.1 to 4.0
mm of the coke, the particle size of which is adjusted to 50 to 100 wt%, is compounded in an amount of 1 to 15 wt% with respect to the total weight of the raw coke raw material, and the coke is dry-distilled in a shaft furnace after molding. Production method.
５〜３５％、最高流動度がｌｏｇｄｄｐｍ２．０〜４．
５である石炭または上記条件に調整された配合炭のうち
０．０５ｍｍ未満 ０〜２０ｗｔ％、０．０５〜１．５
ｍｍ ５０〜１００ｗｔ％に粒度調整した該石炭または
配合炭を、成型コークス全重量に対し８４〜６０ｗｔ％
配合し、粘結力指数０〜５０％の劣質炭のうち０．１ｍ
ｍ未満０〜２０ｗｔ％、０．１〜４．０ｍｍ ５０〜１
００ｗｔ％となるように粒度調整した該劣質炭を、成型
コークス原料全重量に対し１６〜４０ｗｔ％配合し、成
型した後にシャフト炉で該成型炭を乾留することを特徴
とする成型コークスの製造方法。2. A caking strength index of 70 to 95% and a volatile content of 1
5 to 35%, the highest fluidity is logddpm 2.0 to 4.
5 or less than 0.05 mm of blended coal adjusted to the above conditions 0 to 20 wt%, 0.05 to 1.5
mm of the coal or blended coal whose particle size is adjusted to 50 to 100 wt% is 84 to 60 wt% based on the total weight of the molding coke.
0.1m of inferior coal with a cohesion index of 0-50%
m less than 0 to 20 wt%, 0.1 to 4.0 mm 50 to 1
A method for producing a molded coke, which comprises blending 16 to 40% by weight of the inferior coal whose particle size is adjusted to be 00 wt% with respect to the total weight of the molded coke raw material, and subjecting the molded coal to carbonization in a shaft furnace after molding. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6000414A JPH07197030A (en) | 1994-01-07 | 1994-01-07 | Production of formed coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6000414A JPH07197030A (en) | 1994-01-07 | 1994-01-07 | Production of formed coke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07197030A true JPH07197030A (en) | 1995-08-01 |
Family
ID=11473146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6000414A Withdrawn JPH07197030A (en) | 1994-01-07 | 1994-01-07 | Production of formed coke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07197030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6830660B1 (en) | 1998-07-29 | 2004-12-14 | Jfe Steel Corporation | Method for producing metallurgical coke |
-
1994
- 1994-01-07 JP JP6000414A patent/JPH07197030A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6830660B1 (en) | 1998-07-29 | 2004-12-14 | Jfe Steel Corporation | Method for producing metallurgical coke |
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