JPH04176808A - Method for charging coke into blast furnace - Google Patents
Method for charging coke into blast furnaceInfo
- Publication number
- JPH04176808A JPH04176808A JP30381190A JP30381190A JPH04176808A JP H04176808 A JPH04176808 A JP H04176808A JP 30381190 A JP30381190 A JP 30381190A JP 30381190 A JP30381190 A JP 30381190A JP H04176808 A JPH04176808 A JP H04176808A
- Authority
- JP
- Japan
- Prior art keywords
- coke
- layer
- charged
- furnace
- ore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000571 coke Substances 0.000 title claims abstract description 157
- 238000000034 method Methods 0.000 title claims description 17
- 238000010030 laminating Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Manufacture Of Iron (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は高炉内に鉱石およびコークスを交互に装入して
鉱石層およびコークス層を積層するに際し、高炉の炉芯
部にほぼ連続したコークス層を形成し高炉内のガス流れ
を中心流化し炉況を安定に維持することができる高炉へ
のコークス装入方法の改良に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a method for stacking ore layers and coke layers by alternately charging ore and coke into a blast furnace. The present invention relates to an improvement in a method of charging coke into a blast furnace that can form a layer to centralize the gas flow in the blast furnace and maintain stable furnace conditions.
〈従来の技術〉
高炉内に装入された鉱石は、炉内を上昇する高温の還元
ガスによって加熱、還元される。この加熱と還元とを効
率よく行うためには、炉内に交互に装入される鉱石とコ
ークスを適正な分布に維持することが重要である。<Prior Art> Ore charged into a blast furnace is heated and reduced by high-temperature reducing gas rising inside the furnace. In order to perform this heating and reduction efficiently, it is important to maintain an appropriate distribution of ore and coke, which are alternately charged into the furnace.
しかるに、高炉の実操業では、原料装入装置や装入する
鉱石およびコークスの特性が影響し、均一な分布を継続
することが困難であり、上昇する還元ガスの炉内円周バ
ランスが乱れると、還元ガスの偏流が生じ、スリンプや
棚吊り等が発生し易くなり、炉況が悪化してくる。However, in the actual operation of a blast furnace, it is difficult to maintain a uniform distribution due to the influence of the raw material charging equipment and the characteristics of the charged ore and coke, and if the circumferential balance of the rising reducing gas in the furnace is disturbed. , a biased flow of the reducing gas occurs, which tends to cause slipping, shelf hanging, etc., and the furnace condition deteriorates.
ところで高炉内を上昇する還元ガスの円周バランスを維
持するため、高炉内に鉱石層およびコークス層を交互に
積層するに際し、炉芯部にほぼ連続したコークス層を形
成し、高炉内の還元ガスの流れを炉中心部に集中させる
ことが一般的になっている。By the way, in order to maintain the circumferential balance of the reducing gas rising inside the blast furnace, when ore layers and coke layers are alternately stacked inside the blast furnace, a nearly continuous coke layer is formed in the furnace core, and the reducing gas inside the blast furnace is It has become common practice to concentrate the flow at the center of the furnace.
例えば特公昭６４−９３７３号公報に、高炉に対して鉱
石とコークスを交互に装入するに際し、各チャージのコ
ークスを経時的に２系列に分け、初期の装入操業系列で
は、第３図の（ａ）に示すように今回チャージの総投入
コークス量の大部分を前装入の鉱石Ｎ３がすべて覆われ
るように装入してコークス層Ａを形成し、Ｍ後の装入操
業系列で今回チャージの総装入コークス量の残部を炉中
心部へ集中的に装入して炉芯コークス層Ｂを形成する方
法が開示されている。For example, in Japanese Patent Publication No. 64-9373, when ore and coke are alternately charged into a blast furnace, the coke in each charge is divided over time into two series, and in the initial charging operation series, As shown in (a), most of the total amount of coke for this charge is charged so as to cover all of the ore N3 charged in the previous charge to form coke layer A, and in the charging operation series after M. A method is disclosed in which the remaining part of the total amount of coke charged in the charge is intensively charged into the center of the furnace to form a furnace core coke layer B.
すなわち、鉱石３とコークスＡはベル４による通常装入
方式によるものであって、鉱石３の安息角がコークスへ
〇安忍角より小さいことのために、もしコークスＢの存
在がなければ炉中心部における鉱石３の厚みはコークス
Ａの厚みより大きくなり、炉中心部の通気抵抗が大きく
なって還元ガスの中心流は得られない。That is, ore 3 and coke A are charged by the normal charging method using bell 4, and because the angle of repose of ore 3 is smaller than the angle of repose of coke, if coke B does not exist, the center of the furnace The thickness of the ore 3 at this point is greater than the thickness of the coke A, and the ventilation resistance at the center of the furnace becomes large, making it impossible to obtain a central flow of reducing gas.
しかし、コークスＡの装入が終わった後にコークスへの
中心凹部を埋めてさらに積上げるようにコークスＢを集
中的に装入しているので、次回に装入される鉱石３はす
でに炉中心部が通気性のよいコークスＢで占められてい
るので還元ガスの中心流を確保できる。However, after coke A has been charged, coke B is intensively charged to fill the center recess of the coke and further pile up, so ore 3 to be charged next time has already been placed in the center of the furnace is occupied by coke B, which has good air permeability, so a central flow of reducing gas can be ensured.
炉芯コークスＢを炉中心部へ集中的に装入してコークス
層上に小山を作る手段としては、代表的には高炉鉄皮の
上方を貫通してベル４の下方に到るコークス供給バイブ
を挿設し、その先端を炉中心部に臨ませる方式等が知ら
れている。As a means of intensively charging the core coke B into the center of the furnace and creating a small mountain on the coke layer, a typical method is to use a coke supply vibrator that penetrates above the blast furnace shell and reaches below the bell 4. A method is known in which the tip is inserted into the furnace and its tip faces the center of the furnace.
〈発明が解決しようとする！ＩＰ！＞
前記公報に開示された従来の技術によれば、鉱石３の中
心部にはコークスＢが存在するので還元ガスを中心流化
できるけれども、第３図の（ロ）ムこ示すように鉱石層
３の層上にコークスＡを装入する段階で、ベル４から落
下するコークスＡが鉱石層３の凹部表面を中心方向に向
かって辷る間に鉱石３が巻込まれて流れ込み炉中心部に
コークスＡと鉱石３の混合層Ｃが形成される。<Invention tries to solve! IP! > According to the conventional technology disclosed in the above-mentioned publication, coke B exists in the center of the ore 3, so the reducing gas can be made into a central flow, but as shown in FIG. At the stage of charging coke A onto the layer No. 3, while the coke A falling from the bell 4 runs along the concave surface of the ore layer 3 toward the center, the ore 3 is drawn in and flows into the center of the furnace. A mixed layer C of A and ore 3 is formed.
このためコークスＡ→コークスＢ→鉱石３という順序で
装入を繰り返すと炉中心部には第３図の（Ｃ）に示すよ
うにコークスよりも通気抵抗の大きいい混合層Ｃが断続
的に形成され、炉中心部の還元ガス中心流化を阻害する
という問題点がある。Therefore, when charging is repeated in the order of coke A → coke B → ore 3, a mixed layer C, which has higher ventilation resistance than coke, is formed intermittently in the center of the furnace, as shown in Figure 3 (C). There is a problem in that this prevents the reducing gas from flowing centrally in the center of the furnace.
本発明は前述従来技術の事情に鑑みてなされたものであ
り、高炉に対して鉱石とコークスを交互に装入するに際
し、各チャージのコークスを２系列に分け、一方の系列
をコークス層形成用コークスとして前回装入の鉱石層を
覆うように装入し、他方の系列を炉芯コークス形成用コ
ークスとして炉中心部に集中する高炉へのコークス装入
方法を改善することを目的とするものである。The present invention has been made in view of the circumstances of the prior art described above, and when ore and coke are alternately charged into a blast furnace, the coke of each charge is divided into two series, and one series is used for forming a coke layer. The purpose is to improve the method of charging coke into a blast furnace, in which coke is charged to cover the previously charged ore layer, and the other series is used as core coke forming coke to concentrate in the center of the furnace. be.
〈課題を解決するための手段〉
前記目的を達成するための本発明は、高炉に対して鉱石
とコークスを交互に装入するに際し、各チャージのコー
クスを２系列に分け、一方の系列をコークス層形成用コ
ークスとして前回装入の鉱石層を覆うように装入し、他
方の系列を炉芯コークス層形成用コークスとして炉中心
部に集中して装入する高炉へのコークス装入方法であっ
て、前記炉芯コークス層形成用コークスを前回装入の鉱
石層上の炉中心部に今回装入するコークス形成層の層厚
と、次回装入鉱石層の層厚とを加えた高さとなるように
集中して装入し、引続き前記コークス層形成用コークス
を前回装入鉱石層を覆うように装入することにより炉中
心部に連続したコークス層のみを形成することを特徴と
する高炉へのコ−クス装入方法である。<Means for Solving the Problems> The present invention for achieving the above-mentioned object divides the coke of each charge into two lines, and divides one line into two lines when ore and coke are alternately charged into a blast furnace. This is a method of charging coke to a blast furnace in which coke is charged as layer-forming coke so as to cover the previously charged ore layer, and the other series is charged as core coke layer-forming coke in a concentrated manner at the center of the furnace. Then, the height of the coke for forming the furnace core coke layer is the sum of the layer thickness of the coke forming layer to be charged this time to the furnace center above the ore layer charged last time and the layer thickness of the ore layer charged next time. A blast furnace characterized in that only a continuous coke layer is formed in the center of the furnace by charging the coke in a concentrated manner and subsequently charging the coke for forming a coke layer so as to cover the previously charged ore layer. This is the coke charging method.
なお、炉芯コークス層形成用コークスを前回装入鉱石層
の炉中心部に今回装入するコークス形成層の層厚と同じ
高さとなるように集中して装入し、引続きコークス層形
成用コークスを前回装入鉱石層を覆うように装入し、さ
らに炉芯コークス形成用コークスを炉中心部に次回装入
鉱石層の層厚と同じ高さとなるように集中して装入する
ことも可能である。In addition, the coke for forming the coke layer in the furnace core is charged in a concentrated manner in the center of the furnace of the previously charged ore layer so that it has the same layer thickness as the coke forming layer to be charged this time, and the coke for forming the coke layer is then charged. It is also possible to charge the coke so as to cover the previously charged ore layer, and then charge the coke for forming the furnace core coke in a concentrated manner in the center of the furnace so that it is at the same height as the next ore layer. It is.
〈作 用〉
本発明は前記の方法により、従来法とは異なり鉱石層を
覆うようにコークス層形成用コークスを装入する段階に
おいても常に鉱石層の炉中心部上に炉芯コークス層が形
成しであるので、鉱石層のすべてを覆うようにコークス
層形成用コークスを装入しても炉中心部の鉱石とコーク
スの混合層形成を阻止することができる。その結果、安
定して炉中心部を良好な通気性に保持することが可能に
なる。<Function> Unlike the conventional method, the present invention uses the above-mentioned method to form a core coke layer always on the furnace center of the ore layer even at the stage of charging coke for forming a coke layer so as to cover the ore layer. Therefore, even if coke for forming a coke layer is charged so as to cover the entire ore layer, formation of a mixed layer of ore and coke in the center of the furnace can be prevented. As a result, it becomes possible to stably maintain good air permeability in the center of the furnace.
〈実施例〉
以下、本発明の実施例を図面に基づいて説明する。本発
明では、第１図の（ａ）に模式的に示すように炉芯コー
クス層Ｂを形成するコークスは、高炉鉄皮１の上方を貫
通してベル４の下方に到り先端を炉中心部に臨ませたコ
ークス供給パイプ２がら前回装入した鉱石層３の凹部を
埋めてさらに積上げるように炉中心部に集中して装入さ
れる。このとき、炉芯コークス層Ｂの積上げ高さは、今
回装入するコークス形成層の層厚と、次回装入の鉱石層
の層厚とを加えた高さにほぼ匹敵するような高さになる
まで装入する。<Example> Hereinafter, an example of the present invention will be described based on the drawings. In the present invention, as schematically shown in FIG. 1(a), the coke that forms the furnace core coke layer B penetrates above the blast furnace shell 1 and reaches the bottom of the bell 4, with its tip at the center of the furnace. The ore layer 3 that was previously charged is charged from the coke supply pipe 2 facing toward the center of the furnace, filling the recesses of the previously charged ore layer 3 and further stacking it up. At this time, the stacked height of the furnace core coke layer B is approximately equal to the sum of the thickness of the coke forming layer to be charged this time and the thickness of the ore layer to be charged next time. Charge until the
引続き第１図の（ｂ）に示すようにコークス層へを形成
する今回装入のコークスをベル４から落下させて前回装
入の鉱石層３のすべてを覆うように通常通り所定量のコ
ークス投入量となるまで装入してコークス層Ａを形成す
る。このとき、今回装入のコークスがベル４を落下して
前回装入の鉱石層３の表面を矢印で示すように中心方向
に辷っても炉中心部にはすでに炉芯コークスＮＢが形成
されているので炉芯部にコークスと鉱石が混合した混合
層を形成するのを防止することができるのは前記公報に
開示された従来技術の場合と同じである。Subsequently, as shown in Figure 1 (b), the coke charged this time is dropped from the bell 4 to form a coke layer, and a predetermined amount of coke is poured as usual so as to cover all of the ore layer 3 charged previously. Coke layer A is formed by charging the coke until it reaches the desired amount. At this time, even if the currently charged coke falls down the bell 4 and crosses the surface of the previously charged ore layer 3 toward the center as shown by the arrow, core coke NB has already been formed in the center of the furnace. As in the case of the prior art disclosed in the above-mentioned publication, it is possible to prevent the formation of a mixed layer of coke and ore in the furnace core.
次に第１図の（Ｃ）に示すように今回装入のコークス層
層上にベル４から次回装入の鉱石を落下させてコークス
層Ａのすべてを覆うように通常通り所定量の鉱石投入量
になるまで装入して鉱石層３を形成する。このとき、次
回装入の鉱石がコークス層への表面を中心方向に辷って
も炉中心部には前もって炉芯コークス層Ｂが形成されて
いるので従来の方法のように鉱石とコークスが混合した
混合層を形成することなく鉱石を装入することができる
。Next, as shown in Figure 1 (C), ore to be charged next time is dropped from bell 4 onto the coke layer charged this time, and a predetermined amount of ore is charged as usual so as to cover all of coke layer A. The ore layer 3 is formed by charging until the amount is reached. At this time, even if the ore to be charged next crosses the surface of the coke layer toward the center, the core coke layer B has already been formed in the center of the furnace, so the ore and coke will mix as in the conventional method. The ore can be charged without forming a mixed layer.
前述のように本発明ではベルを介して鉱石Ｎ３を形成す
るための鉱石をコークス形成ｒｆｉＡの表面を覆うよう
に装入するときにも、またベル４を介してコークスＨＡ
を形成するためのコークスを鉱石層３の表面を覆うよう
に装入するときにもあらかじめ炉中心部に炉芯コークス
層Ｂが形成されているので、第１回の（ｃｌ）に示すよ
うに炉中心部へのコークスや鉱石の流れ込みによる混合
層の発生が確実に防止され、炉中心部に連続した炉芯コ
ークス層Ｂを確保できる。As described above, in the present invention, when ore for forming ore N3 is charged through the bell so as to cover the surface of the coke forming rfiA, and also when the ore for forming ore N3 is charged through the bell 4, coke HA is charged through the bell 4.
When charging coke to cover the surface of the ore layer 3, the furnace core coke layer B is already formed in the center of the furnace, so as shown in (cl) in the first Generation of a mixed layer due to coke and ore flowing into the furnace center is reliably prevented, and a continuous furnace core coke layer B can be ensured at the furnace center.
なお、本発明では、第２図に示すように他の実施態様と
することもできる。すなわち第２図の（ａ）に示すよう
に炉芯コークス層を形成するためのコークスをコークス
供給バイブ２から前回装入した鉱石層３の凹部を埋めて
炉中心部に集中して装入されるが、このとき積上げる炉
芯コークス層Ｂ１の高さは、今回装入するコークス形成
層Ａの層厚とほぼ同じ高さになるように装入する。Note that the present invention can also be implemented in other embodiments as shown in FIG. That is, as shown in FIG. 2(a), the coke for forming the furnace core coke layer is charged from the coke supply vibrator 2 to fill the recesses in the previously charged ore layer 3 and to be concentrated in the center of the furnace. However, the height of the furnace core coke layer B1 to be piled up at this time is approximately the same as the layer thickness of the coke forming layer A to be charged this time.
引続き第２図の（ｂ）に示すようにコークス層Ａを形成
する今回装入のコークスをベル４から落下させて前回装
入の鉱石層３のすべてを覆うように通常通り所定量のコ
ークス装入量になるまで装入してコークス層Ａを形成す
る。このとき、今回装入のコークスがうル４を落下して
前回装入の鉱石層３の表面を中心方向に辷っても炉中心
部に炉芯コークス層Ｂ、が形成されているので炉芯部に
混合層を形成するのが防止される。Subsequently, as shown in FIG. 2(b), the currently charged coke that forms the coke layer A is dropped from the bell 4, and a predetermined amount of coke is charged as usual so as to cover all of the previously charged ore layer 3. Coke layer A is formed by charging until the amount reached. At this time, even if the currently charged coke falls down the well 4 and crosses the surface of the previously charged ore layer 3 toward the center, a core coke layer B is still formed in the center of the furnace. Formation of a mixed layer in the core is prevented.
さらに、第２図の（Ｃ）に示すように今回装入したコー
クス層への炉中心部にコークス（Ｊ４ 給パイプ２から
炉芯コークス形成用のコークスを次回装入の鉱石層３と
ほぼ同じ高さになるように装入して炉芯コークス層Ｂ、
を積み上げる。Furthermore, as shown in Fig. 2 (C), the coke (J4) for forming core coke from the feed pipe 2 is placed in the center of the furnace to the coke layer charged this time, which is almost the same as the ore layer 3 to be charged next time. Furnace core coke layer B,
pile up.
次に第２図の（ｄ）に示すように次回装入の鉱石をベル
４から落下させてコークス層Ａの表面をすべて覆うよう
に装入して鉱石層３を形成するが、炉中心部には炉芯コ
ークス層Ｂ２が存在するので混合層の形成を阻止するこ
とができる。このようにして順次装入を繰り返せば第２
図の（ｅ）に示すように炉中心部には混合層の存在しな
い炉芯コークス層Ｂ１とＢ２を連続して形成することが
できる。Next, as shown in FIG. 2(d), ore to be charged next time is dropped from bell 4 and charged so as to cover the entire surface of coke layer A, forming ore layer 3. Since the furnace core coke layer B2 is present in the furnace core coke layer B2, the formation of a mixed layer can be prevented. If you repeat charging in this way, the second
As shown in (e) of the figure, core coke layers B1 and B2 without a mixed layer can be formed continuously in the center of the furnace.
第２図に示す実施態様によればコークス装入パイプ２か
らの装入回数が、第１図に示すものの２倍になるけれど
も、炉芯コークス層の装入量を低減することができる。According to the embodiment shown in FIG. 2, although the number of times of charging from the coke charging pipe 2 is twice that shown in FIG. 1, the amount of charging of the core coke layer can be reduced.
〈発明の効果〉
以上説明したように本発明によれば、従来高炉内に装入
した装入物の表面に形成される凹部に装入物が中心に向
は流れ込む際に、装入物の５〜１０％に達する流れ込み
量となって混合層を形成していたが、このような混合層
の形成を皆無として炉中心部に連続した炉芯コークス層
を確実に形成することができる。このため高炉内を流れ
る還元ガスの中心流化が従来に比較して大幅に改善され
、高炉の安定した操業に寄与するところが大きい。<Effects of the Invention> As explained above, according to the present invention, when the charge flows in the direction of the center into the recess formed on the surface of the charge conventionally charged into a blast furnace, Although the inflow amount reached 5 to 10% to form a mixed layer, it is possible to eliminate the formation of such a mixed layer and reliably form a continuous core coke layer in the center of the furnace. For this reason, the central flow of the reducing gas flowing inside the blast furnace is greatly improved compared to the conventional method, which greatly contributes to the stable operation of the blast furnace.
第１図は本発明の実施例に係る装入物の装入手順を示す
説明図、第２図は本発明の他の実施例に係る装入物の装
入手順を示す説明図、第３図は従来例に係る装入物の装
入手順を示す説明図である。
１・・・高炉鉄皮、
２・・・コークス装入パイプ、
３・・・鉱石層、
４・・・ヘ ル、
Ａ・・・コークス形成層、
Ｂ・・・炉芯コークス層。
特許出願人 川崎製鉄株代会社
第１図
（ａ）（ｂ）
（ｄ）
（Ｃ）
第２図
第 ３
炉 炉 炉
辞
壁 心 工
（ｂ）
（Ｃ＞FIG. 1 is an explanatory diagram showing a charge charging procedure according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a charge charging procedure according to another embodiment of the present invention, and FIG. The figure is an explanatory diagram showing a procedure for charging a charge according to a conventional example. DESCRIPTION OF SYMBOLS 1... Blast furnace shell, 2... Coke charging pipe, 3... Ore layer, 4... Hell, A... Coke formation layer, B... Furnace core coke layer. Patent Applicant Kawasaki Steel Co., Ltd. Figure 1 (a) (b) (d) (C) Figure 2 3 Furnace Furnace Furnace Wall Heart (b) (C>
Claims (1)
し、各チャージのコークスを２系列に分け、一方の系列
をコークス層形成用コークスとして前回装入の鉱石層を
覆うように装入し、他方の系列を炉芯コークス層形成用
コークスとして炉中心部に集中して装入する高炉へのコ
ークス装入方法であって、前記炉芯コークス層形成用コ
ークスを前回装入の鉱石層上の炉中心部に今回装入する
コークス形成層の層厚と、次回装入鉱石層の層厚とを加
えた高さとなるように集中して装入し、引続き前記コー
クス層形成用コークスを前回装入鉱石層を覆うように装
入することにより炉中心部に連続したコークス層のみを
形成することを特徴とする高炉へのコークス装入方法。 ２、炉芯コークス層形成用コークスを前回装入鉱石層の
炉中心部に今回装入するコークス形成層の層厚と同じ高
さとなるように集中して装入し、引続きコークス層形成
用コークスを前回装入鉱石層を覆うように装入し、さら
に炉芯コークス形成用コークスを炉中心部に次回装入鉱
石層の層厚と同じ高さとなるように集中して装入する請
求項１記載の高炉へのコークス装入方法。[Claims] 1. When ore and coke are alternately charged into a blast furnace, the coke of each charge is divided into two series, and one series is used as coke for forming a coke layer, and the ore layer charged previously is used as coke for forming a coke layer. A method of charging coke into a blast furnace in which coke is charged in such a manner that the other series is charged as coke for forming a core coke layer and concentrated in the center of the furnace, wherein the coke for forming a core coke layer is The coke is charged in a concentrated manner at the center of the furnace above the ore layer to be charged so that the height is the sum of the thickness of the coke forming layer to be charged this time and the layer thickness of the ore layer to be charged next time, and then the coke is A method for charging coke into a blast furnace, characterized in that only a continuous coke layer is formed in the center of the furnace by charging layer-forming coke so as to cover the previously charged ore layer. 2. Concentrately charge the coke for forming the coke layer in the furnace center of the previously charged ore layer so that it has the same layer thickness as the coke forming layer to be charged this time, and then continue to charge the coke for forming the coke layer. Claim 1: The coke for forming furnace core coke is charged so as to cover the previously charged ore layer, and the coke for forming furnace core coke is charged in a concentrated manner at the center of the furnace so as to have the same layer thickness as the next ore layer. The described method of charging coke into a blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30381190A JPH04176808A (en) | 1990-11-13 | 1990-11-13 | Method for charging coke into blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30381190A JPH04176808A (en) | 1990-11-13 | 1990-11-13 | Method for charging coke into blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04176808A true JPH04176808A (en) | 1992-06-24 |
Family
ID=17925590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30381190A Pending JPH04176808A (en) | 1990-11-13 | 1990-11-13 | Method for charging coke into blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04176808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009001869A (en) * | 2007-06-22 | 2009-01-08 | Sumitomo Metal Ind Ltd | Method for operating blast furnace |
-
1990
- 1990-11-13 JP JP30381190A patent/JPH04176808A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009001869A (en) * | 2007-06-22 | 2009-01-08 | Sumitomo Metal Ind Ltd | Method for operating blast furnace |
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