JPS58180583A - Controlling coal blending in the production of granulated coal-containing coke - Google Patents
Controlling coal blending in the production of granulated coal-containing cokeInfo
- Publication number
- JPS58180583A JPS58180583A JP6258182A JP6258182A JPS58180583A JP S58180583 A JPS58180583 A JP S58180583A JP 6258182 A JP6258182 A JP 6258182A JP 6258182 A JP6258182 A JP 6258182A JP S58180583 A JPS58180583 A JP S58180583A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- coke
- blending
- quality
- pulverized
- 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
【発明の詳細な説明】
この発明は、原料粉炭の一部にバインダーを添加し−Ｃ
所定粒径（二加圧成型した成型炭を原料粉炭の残部（二
配合して装入物を調製し、この装入物を」−タス炉で乾
留してコークスを製造する成型炭配合コークス製造法に
おいて、この装入物を構成する原料粉炭の配合を管理す
るた乃の方法に関する。DETAILED DESCRIPTION OF THE INVENTION This invention involves adding a binder to a part of raw material pulverized coal to produce -C
Molded coal blended coke production in which a charge is prepared by blending the briquette charcoal that has been pressurized and the remainder of the raw coal pulverized coal (2) with a predetermined particle size (2) and the remainder of the pulverized raw coal (2) to produce coke by carbonizing the briquette in a gas furnace. The method relates to the method of controlling the blending of the raw material pulverized coal that makes up this charge.
近年、高炉用コークスの製造法としては、いわゆる成型
炭配合コークス製造法が多く採用されている。この成型
炭配合コークス・製造法によれは、成型効果や装入物の
装入高密度の向上効果が発揮されてそれだけ製造される
コークスの品質、例えハコークス強度等が向上し、この
コークスノ品質向ト（−見合う分だけ装入物中に安価な
非微粘結炭を配合して価格の高騰と供給の不安定が続く
粘結炭の使用を節約することができるものである。In recent years, a so-called briquette coke production method has been widely adopted as a method for producing coke for blast furnaces. This method of manufacturing coke blended with briquette coal exhibits the effect of improving the molding effect and the charging density of the charged material, and the quality of the coke produced, for example, the strength of coke, improves, and the quality of coke is improved. (-) It is possible to mix a proportionate amount of cheap non-caking coal into the charge, thereby saving on the use of coking coal, whose price continues to soar and its supply remains unstable.
ところで、わが国においては、高炉用コークスの製造（
二必要な強粘結炭が殆んど産出しないため、米国、オー
ストラリアその他多くの国から多種多様の原料石炭を輸
入し、これらを適当（二配合してコークス用の原料粉炭
を調製するようにしている。By the way, in Japan, the production of coke for blast furnaces (
2) Since the necessary strong coking coal is hardly produced, a wide variety of coking coals are imported from the United States, Australia, and many other countries, and these are mixed appropriately (2) to prepare pulverized coking coal for coke. ing.
このことは、成型炭配合コークス製造法においても例外
ではなく、通常、２０〜：〕００種にも及ぶ銘柄のＪｆ
ｌ、料石炭を常時確保しておき、１０〜２０種類にも及
ぶ銘柄の原料石炭を配合して高炉用コークス製造用の原
料粉炭を調製し、２〜３日に１回稈度数銘柄の原料石炭
を配合変更する作業を行っている。This is no exception in the method of manufacturing coke blended with briquettes, and there are usually as many as 20 to 00 types of Jf.
l. We always keep a supply of raw coal, mix 10 to 20 different brands of raw coal to prepare powdered raw coal for the production of coke for blast furnaces, and mix the culm grade raw materials once every 2 to 3 days. Work is underway to change the blend of coal.
しかしながら、このような原料石炭は、それが産出され
る国や炭鉱（二上って総てその品質が異なる。このため
、品質の安定したコークスを製造し供給するためには原
料石炭の配合技術を駆使して常時品質の一定なコークス
を製造し得るような原料粉炭の調製が必要になる。However, the quality of such coking coal differs depending on the country and mine where it is produced. Therefore, in order to produce and supply coke of stable quality, the blending technology of coking coal is required. It is necessary to prepare powdered raw coal that can produce coke of constant quality by making full use of these methods.
特に、成型炭配合コークス製造法を採用して安価な非微
粘結炭をできるだけ多量に使用することによりコークス
価格の低廉化を図ろうとする場合（冒よ、この非微粘結
炭をどの程度使用し、成型炭田粉炭側と粉炭用粉炭側と
にそれぞれどの程度配合すべきか決定しなければならず
、石炭配合の最も有利な最適条件を見い出すことは極め
て難かしい問題であると同時に極めて重要な問題である
。In particular, when trying to reduce the cost of coke by adopting a coke manufacturing method with briquette blended coal and using as much cheap non-slightly caking coal as possible (I wonder how much of this non-slightly caking coal will be used? It is necessary to decide how much coal to use and how much to mix in the pulverized coal for forming coal and the pulverized coal for pulverized coal, and finding the most advantageous optimal conditions for coal blending is an extremely difficult problem and at the same time extremely important. That's a problem.
そこで、従来（二おいては、この石炭配合の最適条件を
見い出すための方法として、いくつかの手法が提案され
ている。例えば、粘結炭と非微粘結炭の配合比率の異な
る成型炭を数種類製造し、その種類ことに通常のコーク
ス炉用装入炭（−成型炭を最高５０重歇係まで配合して
コークス化し、このときのコークスのドラム強度ＤＩが
ＩＪ！２型炭配含炭配合比０〜５０重量％いて実質的に
一定となるときの粘結炭及び非微粘結炭の石炭配合比率
を求め、これを最適石炭配合条件とする方法が知られて
いる。Therefore, several methods have been proposed to find the optimal conditions for this coal blend. For example, briquettes with different blending ratios of coking coal and non-caking coal Several types of coal are manufactured, including ordinary charging coal for coke ovens (-molded coal is mixed up to a maximum of 50 strands to make coke, and the drum strength DI of the coke at this time is IJ! Type 2 coal content). A method is known in which the coal blending ratio of caking coal and non-slightly caking coal is determined at a substantially constant coal blending ratio of 0 to 50% by weight, and this is used as the optimum coal blending condition.
また、装入炭のオーバーオール配合でＲＯ−０，９ｊｌ
〜］、Ｐ３ｖｏｌ （Ｒｏ ：最大平均反射率）及びＭ
Ｆ ＝ １．５５〜２．３ Ｆｌ（ＭＦ：最高流動度の
対数表示）の範囲に保ち、成型炭の性状を種々変化させ
、非微粘結炭を成型次側に集中的（二配合する非微粘結
炭集中成型法、非微粘結炭を成型次側及び粉炭側に均等
に配合する均再配合法及び通常の粉炭装入法でそれぞれ
コークスを製造し、各コークスのＤＩ を測定して比
較すると共（二成型炭用粉炭のＭＦとＪ ＤＩ３ｎとの
関係を図示し、集中配合法ΔＤ■：：≧均等配合法ΔＤ
■１：（ΔＤ１３ニー成しかしながら、１）ｉ」者にお
いては、粘結炭と非微粘結炭の配合比率が異なる各種の
成型炭ごとに成梨炭の配合比率が異なる各種の装入物を
調製し、各装入物ごとに重焼テストを実施してコークス
を製造し、製造された各コークスの品質をテストして最
適石炭配合条件を求めなければならず、非常に多くの手
間と所要日数とを要し、また、求められた最適石炭配合
条件はテストが行なわれた範囲内でのことであり、それ
が真の最適石炭配合条件であるか否かの判定もできず、
しかも、使用する粘結炭や非微粘結炭が変ればその都度
同様なテストを繰り返さなければならないという問題が
ある１゜また、後者の方法においても事情は前者の場合
と全く同様であり、成型炭配合コークス製造法（−おい
て如同に石炭配合管理を行うかは重大な課題であった７
゜
本発明者等は、かかる観点（二鑑み、成型炭配合コーク
ス製造法における石炭配合管理をできるだけ能率良く行
うことができ、しかも、真の最適石炭配合条件を見つけ
出すことができる石炭配合管理法について鋭意研究を重
ねた結果、装入物中に配合する成型炭の配合割合を定め
れば、成型炭ＩＫ己合コークス製造法におけるコークス
品質は装入物中に粉炭として配合される粉炭用粉炭の最
高流動室（以下ＭＦｆという）と装入物中（二成型炭と
し゛で配合される成型成用粉炭の最高流動室（以下ＭＦ
″ｂという）との関係に依存するので、これらの関係を
数式化もしくは数表化するかあるいはＭＦｆ−ＭＦｂ座
標にコークス品質を指標とするコークスの品質し・〜ル
ー、・ツブを作成してお（等の手段（二より、ある定め
られた成型炭配合割合による成型炭配合コークス製造法
において真（＝最適石炭配合条件を筒中なｊストて容易
に見つけ出すことができることを見い出し、本発明（二
到達したものである、。In addition, with the overall blend of charging coal, RO-0.9jl
~], P3vol (Ro: maximum average reflectance) and M
F = 1.55 to 2.3 Fl (MF: logarithmic representation of maximum fluidity) was maintained in the range, the properties of the briquette coal were varied, and non-slightly caking coal was intensively added to the next side of the briquette. Coke was manufactured using the non-slightly caking coal intensive compaction method, the homogeneous remixing method in which non-slightly caking coal is evenly mixed into the molded coal side and the pulverized coal side, and the normal pulverized coal charging method, and the DI of each coke was measured. (The relationship between MF and J DI3n of powdered coal for two-molded coal is illustrated, and the intensive blending method ΔD■:: ≧ Equal blending method ΔD
■1: (ΔD13 nee formation) However, 1) In case of ``i'', various types of briquettes with different blending ratios of coking coal and non-slightly caking coal are used. It is necessary to prepare coke, conduct a heavy firing test for each charge, test the quality of each coke produced, and find the optimal coal blending conditions, which requires a great deal of time and effort. In addition, the optimal coal blending conditions found were within the range of tests conducted, and it was not possible to determine whether or not they were the true optimal coal blending conditions.
Moreover, there is a problem in that the same test must be repeated each time the caking coal or non-slightly caking coal used changes1゜Also, in the latter method, the situation is exactly the same as in the former case. How to manage the coal blend in the coke production method with briquette coal was an important issue7.
゜The present inventors have developed a coal blending management method that can perform coal blending management as efficiently as possible in the briquette blended coke manufacturing method and also find the true optimum coal blending conditions. As a result of extensive research, we have found that if the blending ratio of briquette coal mixed into the charge is determined, the coke quality in the briquette IK self-combined coke manufacturing method can be improved by the quality of the pulverized coal for pulverized coal that is blended as pulverized coal in the charge. The highest flow chamber (hereinafter referred to as MFf) and the highest flow chamber (hereinafter referred to as MF
``b''), so either we can convert these relationships into formulas or tables, or we can create a coke quality equation using the coke quality as an index in the MFf-MFb coordinates. From the means (2) of O(etc.), it was discovered that the true (=optimum coal blending conditions) can be easily found in a coke production method using a certain predetermined blending ratio of briquette coal, and the present invention ( Two things have been achieved.
すなわち、本発明は、高・炉用コークスの製造（二適当
であるとされる粘結炭と高炉用コークスの製造（二は不
適当とされる非微粘結炭とからなる原料粉炭を使用する
成型炭配合コークス製造法において、原料粉炭の一部に
バインダーを添加して所定粒径（二力＋＋Ｕモ成型した
成型炭を原料粉炭の残部（二配合してなる装入物を調製
し、この装入物をコークス炉で乾留してコークスを製造
する（二際し、装入物中に粉炭として配合される粉炭用
粉炭のＭＦｆおよび装入物中に成型炭として配合される
成型成用粉炭のＭＦｂとコークス品質との相関関係を求
め、このＭＦｆ−ＭＦｂとコークス品質との相関関係に
基づいて石炭の配合を管理する石炭配合管理法である１
゜
本発明において、高炉用コークスの製造（二適当である
とされる粘結炭とは、揮発分が１５〜４５重量係、
Ｃ３Ｎ（ＪＩＳ Ｍ２ＳＯ４，５るつぼ膨張試験方法（
二よるボタン指数）２以上、
ＭＦ （ＪＩＳ Ｍ８８０］、、７ 流動性試験方法
による最高流動室の対数表示）１０以上、
ＴＤ （ＪＩＳ Ｍ２ＳＯ４，６膨張性試験方法による
全膨張率）１％以上、
の範囲内となるように任意の石炭を配合調製して得られ
るものや、高炉用コークスの製造に適した装入物として
従来公知の性状範囲な廟する、いわゆる通常のコークス
炉用装入炭（二強粘結炭、弱粘結炭あるいはイＩ炭糸又
はイ」油系枯結削等な適宜添１、ＩＩＩ して調製した
配合炭である。That is, the present invention involves the production of coke for blast furnaces (2) using raw coal consisting of caking coal, which is considered suitable, and the production of coke for blast furnaces (2, non-slightly caking coal, which is considered unsuitable). In the briquette blended coke production method, a binder is added to a part of the pulverized raw coal to form a predetermined particle size (2++U molded briquettes), and the remainder of the pulverized raw coal is blended to prepare a charge, This charge is carbonized in a coke oven to produce coke. This is a coal blending management method in which the correlation between MFb of pulverized coal and coke quality is determined, and the coal blending is managed based on the correlation between this MFf-MFb and coke quality.
゜In the present invention, caking coal that is considered suitable for producing coke for blast furnaces has a volatile content of 15 to 45% by weight, C3N (JIS M2SO4, 5 crucible expansion test method)
2 button index) 2 or more, MF (JIS M880], 7 Logarithmic display of the highest flow chamber according to the fluidity test method) 10 or more, TD (total expansion rate according to the JIS M2SO4,6 expansion test method) 1% or more, Ordinary coke oven charging coal, which is obtained by blending and adjusting any coal so that it falls within the range of (It is a blended coal prepared by adding 1 and 3 as appropriate, such as double-strong caking coal, weak caking coal, ① coal thread, or ① oil-based coagulation.
また、高炉用コークスの製造（冒ま不適当とされる非微
粘結炭とは、揮発分が４５％以下、Ｃ３ＮＯ〜ソ、ＭＦ
１．０以下、ＴＤＯ％の特性を有するものをいい、こ
の他（二、例えは粉コークス、ヒツチコークス、石油コ
ークス、タールスラッジ等も含まれる これら粘結炭及
び明徴粘結炭は、それぞれ単独の原料石炭で構１戊して
もよいはか、複数の原料石炭を混合して構成してもよい
。In addition, non-slightly caking coal, which is considered unsuitable for the production of coke for blast furnaces, has a volatile content of 45% or less, C3NO to SO, MF
1.0 or less, TDO%, and also includes coke breeze, hitch coke, petroleum coke, tar sludge, etc. These caking coals and clear caking coals are It may be composed of only one raw material coal, or it may be configured by mixing a plurality of raw material coals.
コークス製造の際にコークス炉（二装入される装入物は
、粘結炭と非微粘結炭とを最適石炭配合条件に合せて配
合された成型炭田粉炭にバインダーを添加して所定粒径
（ニア１１１圧成型して得られる成型炭と、粘結炭と非
微粘結炭とを最適石炭配合条件に合せ−Ｃ配合された粉
炭用粉炭とを所定の割合に配合して調製される。この装
入物中（二配合される成型炭の割合は、通常１０〜６０
重量％の範囲内コークス品質レベルマツプ（以下、品質
レベルマツプという。）を作成し、品質レベルマツプに
基づき石炭配合管理を実施する］−程について説明する
。During coke production, the coke oven (second charge) is made by adding a binder to pulverized coal, which is made by blending coking coal and non-caking coal to the optimum coal blending conditions, and producing a predetermined grain size. Diameter (Near 111) It is prepared by blending briquette obtained by compacting, caking coal and non-slightly caking coal in a predetermined ratio with powdered coal for pulverized coal blended with -C according to the optimum coal blending conditions. The ratio of briquette coal in this charge is usually 10 to 60%.
The process of creating a coke quality level map (hereinafter referred to as quality level map) within the range of weight % and implementing coal blending management based on the quality level map will be explained.
ａＩ 装入炭中（二配合される成型炭の配合割合を決
ｊ（ｌする。。aI Determine the blending ratio of briquette coal in the charged coal (2).
成型炭配合コークス製造法においては、所定の成型炭配
合割合まではその配合率のｔ曽υ旧二伴−′Ｘ＞ −Ｃ
−ｊ−クス炉に装入される装入物の装入嵩密度が向トし
、これを乾留して得られるコー、クスの強度も向−卜す
るが、戊型災配合割合がある程度以Ｌ（二なると成型炭
相斤間に形成される空間内に粉炭１旧粉炭が光分に充填
されず、かえって装入嵩密度が数十し、これを乾留して
得られるコークスの強度も向トしないかあるいはかえっ
て低下する。このため、成型炭配合割合を一方の軸、例
えば横軸にとり、装入嵩密度を他方の軸、例えば縦軸（
二とって両番の関係を調べてみると最大値が存在する。In the briquette blended coke manufacturing method, up to a predetermined blending ratio of briquette coal, the blending ratio is
- The bulk density of the charge charged into the coke furnace will increase, and the strength of the coke and coke obtained by carbonizing this will also improve, but the proportion of the coke mixture will increase beyond a certain level. L (In the second case, the pulverized coal 1 old pulverized coal is not filled with light in the space formed between the molded coal loaves, and the bulk density of the charging increases to several tens of tens of pounds, and the strength of the coke obtained by carbonizing it also improves. Therefore, the blending ratio of briquette coal is plotted on one axis, for example, the horizontal axis, and the charging bulk density is plotted on the other axis, for example, the vertical axis (
If we take two and examine the relationship between both numbers, there is a maximum value.
したがって、装入物中に配合される成型炭の配合割合は
、この装入嵩密度が最大となるまでの範囲の成型炭配合
割合とするのがよい。この値は、コークス炉の・ｊ法、
成型炭の粒径や粒度分布、粉炭用粉炭の粒径や粒度分布
、成型炭や粉炭用粉炭中（−含まｌｔろ水分の割合等（
二より変化する→が、これらの条件を定めること（二上
って固有の値として測定され決定されるもので、通常１
０〜６０重量係の範囲内の値として求まる。Therefore, it is preferable that the blending ratio of the briquettes blended into the charging material be such that the blending ratio of the briquette coal is within a range that maximizes the charging bulk density. This value is determined by the coke oven's j method,
Particle size and particle size distribution of briquette coal, particle size and particle size distribution of pulverized coal for pulverized coal, percentage of filtrate water contained in briquette coal and pulverized coal for pulverized coal, etc.
2 → is determined by determining these conditions (2 is measured and determined as a unique value, usually 1
It is determined as a value within the range of 0 to 60 weight coefficient.
■ 粉炭用１粉炭と成型実用粉炭を調製する。■Prepare pulverized coal for pulverized coal and molded practical pulverized coal.
装入物中に配合される非微粘結炭の配合法とし“Ｃは、
粉炭側と成型炭側とに均等に配合する均等配合法、成型
炭側に多量（二配合する成型炭側東中配合法及び粉炭側
（二多量（二配合する粉炭側東中配合法とがある。そこ
で各配合法の違い（二よりグループ（−分け、各グルー
プ毎（二最高流動度（以下、ＭＦという）の異なる複数
種類、好ましくは３〜５種類の粉炭用粉炭及び成型実用
粉炭の組合せを調製する。各グループ毎の各組合せに係
る粉炭用粉炭及び成型実用粉炭を調製する方法としては
、ＭＦの異なる複数種類の原料石炭を配合調製するか、
あるいは通常のコークス炉装入炭を基準炭としてこれに
強粘結炭、弱粘結炭、非微粘結炭および又は石炭系また
は石油系粘結剤をその配合割合を変えて配合すること（
二より調製する。"C" is the blending method of the non-slightly caking coal blended into the charging material.
The equal blending method, in which the pulverized coal side and the molten coal side are mixed equally, the pulverized coal side, the Tochu blending method, in which a large amount (2 blends) on the pulverized coal side, and the Tochu blending method, in which the pulverized coal side (2 large amounts (2 blends, in the pulverized coal side), Therefore, each blending method is divided into two groups (-). The method of preparing pulverized coal for pulverized coal and molded pulverized coal for each combination of each group is to mix and prepare multiple types of raw coal with different MFs,
Alternatively, using ordinary coke oven charging coal as a reference coal, strongly coking coal, weakly caking coal, non-slightly caking coal, and/or coal-based or petroleum-based caking agents may be blended in varying proportions (
Prepare from step 2.
■ 成型炭を製造する。■ Manufacture briquette coal.
ト記各グループ毎の各組合せについて調製された成型実
用粉炭にバイシダーを添加して成型炭を製造する。この
成型炭の製造に使用するバインダーとしては石炭系及び
／又は石油系の瀝青物を使１月するのがよい。石炭系瀝
青物としては例えば石炭系ピッチ、ロードタール、石炭
の溶剤抽出物あるいはその残渣物、石炭系重質油等が適
当である。Molded coal is produced by adding Vicedar to the molded practical powdered coal prepared for each combination of each group. It is preferable to use coal-based and/or petroleum-based bituminous materials as the binder used in the production of this briquette coal. Suitable coal-based bituminous materials include, for example, coal-based pitch, road tar, coal solvent extracts or their residues, and coal-based heavy oil.
また、石油系瀝青物としては例えば石油系ピッチ、アス
ファルト、石油系重質油あるいはこれを熱処理若しくは
溶剤処理して得られるものが適当である。この成型炭は
、成型実用粉炭にバインダーを添加して混合し、適宜加
熱処理しまたは加熱処理することなく、成型機によって
所定粒径に加圧成型される。成型炭の粒径Ｃ二ついては
特に限定されるものではないが、最大粒径を２０〜１０
０諭程度とするのが好ましい。Suitable petroleum bituminous materials include, for example, petroleum pitch, asphalt, petroleum heavy oil, and those obtained by heat treatment or solvent treatment. This molten coal is produced by adding a binder to pulverized pulverized coal and mixing the mixture, and then press-molding the mixture into a predetermined particle size using a molding machine with or without heat treatment as appropriate. The particle size C of the briquette coal is not particularly limited, but the maximum particle size is 20 to 10
It is preferable to set the number to about 0.
■ 装入物を調製する。■ Prepare the charge.
Ｌ記各グループ毎に、上記■で得られた成型炭異なる複
数種類の装入物を調製する。For each group in L, prepare a plurality of different types of briquettes using different types of briquettes obtained in (1) above.
ψ） コークス化試験をして指標となるコークス品質を
求める。ψ) Perform a coking test to determine coke quality as an indicator.
配合方式の異なる上記各グループの各装入物（一ついて
コークス化試験を行い、ついでコークス品質試験を行う
６．コークス化試験は、３４Ｌ試験炉、電気炉あるいは
重焼等の従来公知の方法で行うことができる。コークス
品質試験の結果は、品質レベルマツプを作成するための
指標になるものであり、この指標となるコークス品質と
してはドラム強＋ｉＤＩ、小型ＣＯ２反に、後強度Ｃ８
Ｒ，小型ｃｏ２反応率ＣＲＩ、ミクロストレングスＭＳ
■、ＪＩｓ反応性ＪＩＳ−旧、コークス気孔率、コーク
ス粒度歩留等を挙けることができる。これらのコークス
品質のうち特に好ましいのは、コークス品質を判定−ｒ
るにで最も重要なドラム強度ＤＩや小型反応後強度Ｃ３
Ｒである。Each of the above groups of charges with different blending methods (one is subjected to a coking test, and then a coke quality test is carried out) The results of the coke quality test serve as an index for creating a quality level map, and the coke quality used as this index is drum strength + iDI, small CO2 strength, and after strength C8.
R, small co2 reaction rate CRI, micro strength MS
(2), JIS reactivity, JIS-old, coke porosity, coke particle size yield, etc. Among these coke qualities, particularly preferred is the coke quality determination-r
The most important drum strength DI and small-scale reaction strength C3
It is R.
、４１ 品質レベルマツプを作成する。, 41 Create a quality level map.
品質レベルマツプの作成は、例えはＭＦｆを一方の軸、
例えは横軸とし、ＭＦｂを他方の軸、例えば縦軸として
作成されたＭＦ４−■％座標に上記■て求められたコー
クス品質を指標とする等品質曲線を描くことにより作成
される。このようにして作成された品質レベルマツプは
、例えばドラム強度ＤＩや小型ＣＯ２Ｏ２反応度強度Ｒ
を指標とする場合、楕円状の等強度曲線として求められ
、ＭＦｆ軸方向及びＭＦｂ軸方向（二それぞれ極大値を
有する。When creating a quality level map, for example, MFf is used as one axis,
For example, it is created by drawing an equal quality curve using the coke quality determined in step (1) above as an index on the MF4-■% coordinate created with MFb as the horizontal axis and MFb as the other axis, for example, the vertical axis. The quality level map created in this way can be used, for example, as drum strength DI or small CO2O2 reactivity strength R.
When used as an index, it is obtained as an elliptical iso-intensity curve, and has maximum values in both the MFf axis direction and the MFb axis direction (both have maximum values).
ついで、本発明（二おいて、作成された品質レベルマツ
プを基準とする石炭配合管理（二ついて以下に説明する
。Next, the present invention (2) describes coal blending management (2) based on the created quality level map (2).
次に品質し・〜ルマップにおける最高の等品質曲線で囲
まれた範囲内から数点を選択し、各点（二相当するＭＦ
ｆとＭＦｂとを読み取り、各ＭＦｆ及びＭＦｂに相当す
る粉炭用粉炭と成型炭１旧粉炭とを調製する。７このよ
うにして調製された粉炭用粉炭と成型実用粉炭とを使用
し、品質レベルマツプ上で選定した各点（二対応する装
入物を調製し、コークス化試験とコークス品質試験とを
行ってその結果を品質し′〜ルマツブ上にプロットし、
その結果から最高のコークス品質を示す点を推定する。Next, select several points within the range surrounded by the highest equal quality curve in the quality map, and each point (two corresponding MF
f and MFb are read, and pulverized coal for pulverized coal and molded coal 1 old pulverized coal corresponding to each MFf and MFb are prepared. 7 Using the pulverized coal for pulverized coal and the molded pulverized coal thus prepared, prepare the corresponding charges at each point selected on the quality level map (2) and conduct a coking test and a coking quality test. Quality the results and plot them on Rumatsubu,
From the results, the point showing the best coke quality is estimated.
このようにして求められた最高のコークス品質を示す点
（二おけるＭＦｆとＭＦ′ｂとを読み取り、実操業用の
各ＭＦｆ及びＭＦｂ−二相当する粉炭用粉炭と成型炭田
粉炭のそれぞれの配合割合を決定することができる次に
、粉炭用粉炭や成型履用粉炭を構成する原料ｎ炭の配合
を変える必要が生じた場合の石炭配合管理について説明
する。数種の石炭配合割合のものについてそのＭＦを測
定し、品質レベルマツプから読み取れる最高のコークス
品質を示す粉炭１月粉炭の石炭配合割合と成型履用粉炭
の石炭配合割合を求め、これらの石炭配合割合を中心・
にして数種、好ましくは２〜４種の装入物を調製し、各
装入物についてコークス化試験とコークス品質試験を竹
い、これらの結果から最高のコークス品質を示す点にお
けるＭＦｆとＭＦｂを推定し、実操業用の各ＭＦｆ及び
ＭＦｂに相当する粉炭用粉炭及び成型履用粉炭のそれぞ
れの配合割合を決定することができる。The point showing the highest coke quality determined in this way (read MFf and MF'b at 2 points, and calculate the respective blending ratios of pulverized coal for pulverized coal and pulverized compacted coal corresponding to each MFf and MFb-2 for actual operation. Next, we will explain coal mixture management when it becomes necessary to change the mixture of raw coal that makes up powder coal for pulverized coal or pulverized coal for molding. The MF is measured, and the coal blending ratio of January pulverized coal and the coal blending ratio of molded pulverized coal, which show the highest coke quality that can be read from the quality level map, are calculated.
Several types, preferably 2 to 4 types of charges are prepared, and each charge is subjected to a coking test and a coke quality test, and from these results, MFf and MFb at the point showing the highest coke quality are determined. can be estimated, and the respective blending ratios of pulverized coal for pulverized coal and pulverized coal for molded wear corresponding to each MFf and MFb for actual operation can be determined.
上記の説明は品質レベルマツプを作成し、利用する方法
についてであるが、品質レベルデツプにかえて上記相関
関係を数式化して利用してもよいしＺ１ンヒューターに
データーを入力して必要な形式で結果を出力させてもよ
い。The above explanation is about how to create and use a quality level map, but the above correlation may be expressed as a formula and used instead of the quality level depth, or the data can be input into the Z1 inputter and the results can be output in the required format. You may also output it.
本発明に係る石炭配合管理法（二よれば、一度ＭＦ［−
ＭＦｂとコークス品質との相関関係を求めておけば、装
入物の成型炭配合割合を変更しない限り、数種の石炭配
合割合のものについてＭＦの測定を行うだけで概略の最
適石炭配合割合を決定することができる。このため、最
適な石炭配合割合を決定するためには、ＭＦの測定によ
り求められた概略の最適石炭配合割合を中心にして最小
限度の種類の装入物を調製してコークス化試験とコーク
ス品質試験をするだけで最適な石炭配合割合を決定する
ことができ、この石炭配合管理（１要する手間、所要時
間、経費等を最小限度にすることができる。しかも、本
発明の石炭配合管理法によりて求められた最適なイ］炭
配合割合は、従来法の場合とは異なり、貞に最適な石炭
配合割合であり、これによって向上するコークス品質に
見合う分だけ安価な非微粘結炭の使用を増加し、高価な
粘結炭の使用１を節約できる。According to the coal blending management method (2) according to the present invention, once MF[-
If you find the correlation between MFb and coke quality, you can roughly determine the optimum coal blending ratio by simply measuring MF for several types of coal blending ratios, unless you change the briquette blending ratio of the charge. can be determined. Therefore, in order to determine the optimal coal blending ratio, it is necessary to prepare the minimum number of types of charges based on the approximate optimal coal blending ratio determined by MF measurement, and conduct coking tests and coke quality. The optimum coal blending ratio can be determined simply by testing, and the amount of effort, time, expense, etc. required for this coal blending management (1) can be minimized.Moreover, the coal blending management method of the present invention Unlike the conventional method, the optimum coal blending ratio determined by A] is the optimal coal blending ratio, and this makes it possible to use non-slightly caking coal, which is cheaper and commensurate with the improved coke quality. , and the use of expensive coking coal can be saved.
次に、実施例に基づいて本発明方法をより詳細に説明す
る。Next, the method of the present invention will be explained in more detail based on examples.
（ｉｌコークスの品質レベルマツプ作成ｍ 実験条件
の設定
成型炭配合コークス製造法（二おける粉炭側及び成型炭
側の性状中を広範囲に変化させるため、第１表（二示す
性状を有するコークス炉用装入炭を基準炭とし、この基
準炭に第１表に示す非微粘結炭及び石炭系粘結剤とを第
２表に示す方法で配合し、第１表 原料の性状
５２９
各科の配合炭を調製した。(Preparation of a quality level map of IL coke) Setting of experimental conditions Molded coal blended coke production method (Coke oven equipment with properties shown in Table 1 (2) The input coal is used as the reference coal, and the non-slightly caking coal and coal-based caking agent shown in Table 1 are blended with this reference coal in the method shown in Table 2. Charcoal was prepared.
＋２１ ＭＦＩとＭ九の測定
第２表（二示す各粉炭用粉炭及び成型要用粉炭（二つい
て、それぞれＪＩＳ Ｍ ８８０１．７流動性試験法（
ギーゼラーフラストメーター法）によりＭＦ４及びＭト
’ｂを測定した。結果は第：３表に示す通りであ一〕だ
（：＜＋ ｒ戊型炭の製造
第２衣に示す成型要用粉炭とバインダとして石炭系軟ヒ
ツチ（軟化点温度３５°Ｃ）を用い、常法（二より１戊
型炭を製造した。+21 Measurement of MFI and M9 Table 2
MF4 and Mt'b were measured by Gieseler frustometer method). The results are as shown in Table 3 (:<+ r Manufacture of hollow-type coal. Using coal-based soft hitch (softening point temperature 35°C) as the pulverized coal required for forming and binder shown in Step 2, , a conventional method (one type charcoal was produced from two).
（４１コークス化試験
第２表に示す粉炭用粉炭と上記（：（）で製造した成型
炭とを成型炭配合割合３０重量係で配合して装入物を調
製し、これら各装入物をＸｔコークス試験炉に装入して
常法（二より乾留をした。(41 Coking test A charge was prepared by blending the pulverized coal shown in Table 2 with the briquette coal produced in the above (:()) at a briquette blending ratio of 30% by weight. It was charged into an Xt coke test furnace and subjected to carbonization using a conventional method (secondary method).
（５） コークス品質試験
に記（４）で製造した各コークスについて、ドラム強度
（ＪＩＳ Ｋ２１５１．６．２ドラム法） ＤＩ 及
び小型ＣＯ２Ｏ２反応度強度Ｒを測定した。結果は第３
表に／ｌζず通りであった。(5) Regarding the coke quality test, drum strength (JIS K2151.6.2 drum method) DI and small CO2O2 reactivity strength R were measured for each coke produced in (4). The result is the third
/lζ was exactly as shown in the table.
なお、小型ＣＯ２Ｏ２反応度強度Ｒは次の試験法により
求めた。すなわち、試料コークスを２０±１ｍｍの粒度
（ニ調製したちの２００ｇを反応管内で５４／ｒ１１Ｉ
ｎのＣＯ２流通下、１１００±１０ ”Ｃの加熱状態で
２時間反宅、させ、反応後の重量なＡｇとし、また反応
後の試材全ごにを■型試験機のドラム（１３０φＸ７０
０ｗｎ）にメ、れ２＋１ ｒｐｍ Ｘ ３０分回転させ
た後試料を篩分け、・１１１ｍｍ部分の重量をＢｇとし
て、この場合の小型ＣＯ２Ｏ２反応度強度Ｒを次式
（６１品質し・、ルマツブの作成
Ｉ−記（２）（二おいて求められたＭＦ［を横軸とし、
ＭＦｂを縦軸としてＭＦｆ−ＭＦｂ座標を形成し、この
ＭＦｆ・ＭＦｂ座標（二上記（５）のコークス品質試験
の結果、すなわちドラム強度ＤＩ 及び小型ＣＯ２Ｏ
２反応度強度Ｒを指標として等強度曲線を描き、品質レ
ベルマツプを作成した。結果は第１図及び第２図（−示
す通りであり、等強度曲線は多少歪のある略々同心惰円
形状の閉曲線となった。この第１図及び第２図から明ら
かなよう（二、最高のコークス品質を示す点は、ＭＦｆ
が約２７５でＭＦ′ｂが約１６０である点のイ、１近で
あることがわかる。Incidentally, the small-sized CO2O2 reactivity intensity R was determined by the following test method. That is, 200 g of sample coke with a particle size of 20 ± 1 mm (200 g) was heated to 54/r11I in a reaction tube.
The specimens were heated for 2 hours at 1100±10"C under a CO2 flow of
After rotating at 2 + 1 rpm for 30 minutes, the sample is sieved, and the weight of the 111 mm portion is Bg, and the small CO2 O2 reactivity intensity R in this case is calculated using the following formula (61 quality). I-Note (2) (with MF [obtained in 2 as the horizontal axis,
The MFf-MFb coordinate is formed with MFb as the vertical axis, and the MFf-MFb coordinate (2) is the result of the coke quality test in (5) above, that is, the drum strength DI and the small CO2O
2 An isointensity curve was drawn using the reactivity intensity R as an index, and a quality level map was created. The results are as shown in Figures 1 and 2 (-), and the iso-intensity curve was a closed curve with a somewhat distorted, approximately concentric circular shape. , the point showing the highest coke quality is MFf
It can be seen that the point A is close to 1 where MF'b is about 275 and MF'b is about 160.
さらに、第１図及び第２図（１描いた■゛ｂ二ＭＦｆ自
線が均等配合直線であるから、この直線より土力の部分
、すなわち■”ｂ）ＭＦｆの領域を粘結炭集中成型領域
とし、また、この直線より下一方の部分すなわちΔ４Ｆ
ｂ＜ ＭＦｆの領域を非微粘結炭集中成型領域とみると
、最高のコークス品質を示す点は非微粘結炭集中成型領
域（ＭＦｂ ＜■”ｒ）に存在することがわかる。Furthermore, since the self-line drawn in Figures 1 and 2 (■゛b2MFf drawn in 1 is an evenly mixed straight line, the part of the soil force from this straight line, that is, The area below this straight line, that is, Δ4F
If the region b < MFf is regarded as the non-slightly caking coal concentrated forming region, it can be seen that the point showing the highest coke quality exists in the non-slightly caking coal intensive forming region (MFb <■''r).
第１図はＤＩ を指標とする品質レベルマツプ、第２
図はＣ８Ｒを指標とする品質レベルマツプである。
手続補正書
昭和６７年＄月１日
１１ｊ許庁長盲 着杉和夫 殿
１ ４１件の表示
昭和＆Ｉ７ツ］ＩＩＩＩ 許 Ｈ第６１５！１１号２
発明の名称 成製炭配金コークス製造法における石炭
配合管理法３ 補正をする者
事Ｐ１との関係 特許出願人
ｉ／′Ｊｈ’ 、ｆｊ 東京都中央区銀座６丁目１７
番３号氏 ｒ＋（１・）（６６４） 新日本製鉄化学
工業株式会社４ 代 理 人 〒１０４ 電
話０８（＄４８）１６フ６住 所 東京都中央区銀座７
丁目１４番２号荏原ビル８階７ 補正の対象
添付図面
８ 補正の内容
別紙の通り、訂正図面を提出する。Figure 1 is a quality level map using DI as an indicator;
The figure is a quality level map using C8R as an index. Procedural Amendment Document 1986 $ Month 1 11j Permanent Agency Director Blind Kazuo Chikusugi 1 41 Displays Showa & I7] III H No. 615! 11 No. 2
Title of the invention Coal blending control method 3 in the coal distribution coke manufacturing method Relationship with the person making the amendment P1 Patent applicant i/'Jh', fj 6-17 Ginza, Chuo-ku, Tokyo
Number 3 Mr. r + (1・) (664) Nippon Steel Chemical Industry Co., Ltd. 4 Agent 104 Telephone 08 ($48) 16F6 Address 7 Ginza, Chuo-ku, Tokyo
Chome 14-2 Ebara Building 8th Floor 7 Attached drawing subject to amendment 8 Contents of amendment A corrected drawing will be submitted as shown in the attached sheet.
Claims (5)
粘結炭と高炉用コークスの製造（二は不適当とされる非
微粘結炭とからなる原料粉炭を使用する成型炭配合コー
クス製造法において、原料粉炭の一部（ニバインダーを
添加して所定粒径（二加圧ｌ戊型した成型炭を原料粉炭
の残部（二配合してなる装入物を調製し、この装入物を
コークス炉で乾留してコークスを製造する（二際し、装
入物中に粉炭として配合される粉炭Ｊ＋Ｉ粉炭の最高流
動塵ＭＦｆおよび装入物中に成型炭として配合される成
型要用粉炭の最高流動＋ｉＭＦｌ）とコークス品質との
相関関係を求め、このＭＦｆ−ＭＦｂとコークス品質と
の相関関係に基づいて石炭の配合を管理することを特徴
とする石炭配合管理法。(1) Manufacture of coke for blast furnaces with caking coal that is considered suitable for the manufacture of coke for blast furnaces (2) Manufacture of briquette-blended coke using raw coal consisting of non-slightly caking coal that is considered unsuitable. In the method, a charge is prepared by blending a part of the raw coal pulverized coal (2 binders and molded coal with a predetermined particle size) with the remaining part of the raw material pulverized coal (2), and this charging is carbonized in a coke oven to produce coke. 1. A method for managing coal blending, which comprises determining the correlation between the maximum flow rate +iMFl) and coke quality, and managing the blending of coal based on the correlation between MFf-MFb and coke quality.
係は、ＭＦｆ ’ ＭＦｂ座標にコークス品質を指標と
するコークスの品質レベルマツプを作成して求める特許
請求の範囲第１項記載の石炭配合管理法。(2) The correlation between 81Ff-MFb and coke quality is determined by the coal blending management described in claim 1, which is obtained by creating a coke quality level map using coke quality as an index in MFf'MFb coordinates. Law.
炭６７〜１００重閂チ及び非微粘結炭θ〜３３重箪係で
あり、成型炭側が粘結炭２２〜ｉｏｏ重量％及び非微粘
結炭０〜７８重量％である特許請求の範囲第１項又は第
２項記載の石炭配合管理法。(3) The blending ratio of coking coal and non-slightly caking coal is that the pulverized coal side is caking coal 67 to 100 heavy bolts and the non-slightly caking coal is θ to 33 heavy bolts, and the molded coal side is caking coal 22 ~ioo weight % and non-slightly caking coal 0 to 78 weight %.
ＤＩである特許請求の範囲第１項又は第２項記載の石炭
配合管理法。(4) The coal blending management method according to claim 1 or 2, wherein the index of coke quality is coke drum strength DI.
Ｏ２反応度強度Ｒである特許請求の範囲第１項又は第２
項記載の石炭配合管理法。(5) Small CO2 from coke is an indicator of coke quality
Claim 1 or 2 which is O2 reactivity intensity R
Coal blending management method described in Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258182A JPS58180583A (en) | 1982-04-16 | 1982-04-16 | Controlling coal blending in the production of granulated coal-containing coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6258182A JPS58180583A (en) | 1982-04-16 | 1982-04-16 | Controlling coal blending in the production of granulated coal-containing coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58180583A true JPS58180583A (en) | 1983-10-22 |
| JPS6340234B2 JPS6340234B2 (en) | 1988-08-10 |
Family
ID=13204424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6258182A Granted JPS58180583A (en) | 1982-04-16 | 1982-04-16 | Controlling coal blending in the production of granulated coal-containing coke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58180583A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047095A (en) * | 1983-08-25 | 1985-03-14 | Nippon Kokan Kk <Nkk> | Preparation of coke for metallurgy |
| JPS6187787A (en) * | 1984-10-05 | 1986-05-06 | Nippon Steel Chem Co Ltd | Method for controlling blend of coal for production of coke |
| CN104593030A (en) * | 2015-02-13 | 2015-05-06 | 武汉钢铁(集团)公司 | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102302A (en) * | 1977-01-27 | 1978-09-06 | Nippon Steel Corp | Preparation of modified coal for producing metallurgical coke |
| JPS53108102A (en) * | 1977-03-03 | 1978-09-20 | Nippon Kokan Kk <Nkk> | Production of metallurgical coke |
| JPS53132001A (en) * | 1977-04-25 | 1978-11-17 | Nippon Kokan Kk <Nkk> | Control of coke strength by coal maximum fluidity |
| JPS5637277A (en) * | 1979-08-31 | 1981-04-10 | Matsushita Electric Works Ltd | Lightweight exterior wall material and its manufacture |
-
1982
- 1982-04-16 JP JP6258182A patent/JPS58180583A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102302A (en) * | 1977-01-27 | 1978-09-06 | Nippon Steel Corp | Preparation of modified coal for producing metallurgical coke |
| JPS53108102A (en) * | 1977-03-03 | 1978-09-20 | Nippon Kokan Kk <Nkk> | Production of metallurgical coke |
| JPS53132001A (en) * | 1977-04-25 | 1978-11-17 | Nippon Kokan Kk <Nkk> | Control of coke strength by coal maximum fluidity |
| JPS5637277A (en) * | 1979-08-31 | 1981-04-10 | Matsushita Electric Works Ltd | Lightweight exterior wall material and its manufacture |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047095A (en) * | 1983-08-25 | 1985-03-14 | Nippon Kokan Kk <Nkk> | Preparation of coke for metallurgy |
| JPS6187787A (en) * | 1984-10-05 | 1986-05-06 | Nippon Steel Chem Co Ltd | Method for controlling blend of coal for production of coke |
| JPH0214398B2 (en) * | 1984-10-05 | 1990-04-06 | Shinnitsutetsu Kagaku Kk | |
| CN104593030A (en) * | 2015-02-13 | 2015-05-06 | 武汉钢铁(集团)公司 | Coking and coal blending method for improving bonding strength of large inert components and anisotropic interfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6340234B2 (en) | 1988-08-10 |
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