JP2002030318A - Construction method and equipment for blast furnace blast system - Google Patents
Construction method and equipment for blast furnace blast systemInfo
- Publication number
- JP2002030318A JP2002030318A JP2000214184A JP2000214184A JP2002030318A JP 2002030318 A JP2002030318 A JP 2002030318A JP 2000214184 A JP2000214184 A JP 2000214184A JP 2000214184 A JP2000214184 A JP 2000214184A JP 2002030318 A JP2002030318 A JP 2002030318A
- Authority
- JP
- Japan
- Prior art keywords
- gauge
- pipe
- blast furnace
- gantry
- furnace
- 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
Landscapes
- Blast Furnaces (AREA)
Abstract
(57)【要約】
【課題】 工数を少なくし、工期を短縮することができ
る高炉送風支管系の構築方法と構築用装置を提供する。
【解決手段】 高炉１１の各支元管１２と、各支元管１
２に対応する羽口の間の相対据付位置を寸法調整用のゲ
ージ１８を用いて寸法調整して送風支管系を構築する高
炉送風支管系の構築方法において、環状管１４の下部に
懸垂支持されたガイド部材１５と、ガイド部材１５に走
行装置１６を介して懸架され、環状管１４の下位置を炉
体円周方向に移動可能な架台１７と、架台１７に支持さ
れたゲージ１８とを有する高炉送風支管系の構築用装置
１０によって、ゲージ１８を架台１７に載置して炉体円
周方向に移動させる。
(57) [Summary] [PROBLEMS] To provide a method and an apparatus for constructing a blast furnace ventilation branch pipe system capable of reducing man-hours and shortening a construction period. SOLUTION: Each base pipe 12 of a blast furnace 11 and each base pipe 1
In a method of constructing a blast furnace air blowing branch system in which a relative installation position between tuyeres corresponding to No. 2 is adjusted by using a dimension adjusting gauge 18 to build an air blowing branch system, the tuyere is suspended from the lower part of the annular pipe 14. A guide member 15, a gantry 17 suspended by the guide member 15 via a traveling device 16 and movable in a furnace body circumferential direction below the annular pipe 14, and a gauge 18 supported by the gantry 17. The gauge 18 is mounted on the gantry 17 and moved in the circumferential direction of the furnace body by the apparatus 10 for constructing a blast furnace ventilation branch system.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高炉の改修を含む
建設（新設時を含む）方法及びその装置に係り、詳しく
は、高炉の周囲に設けられた環状管と羽口を連結する送
風支管系を構築する方法と構築用装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of construction (including new construction) including repair of a blast furnace and an apparatus therefor, and more particularly, to an air blow pipe connecting an annular pipe provided around a blast furnace and a tuyere. The present invention relates to a method for constructing a system and a construction apparatus.
【０００２】[0002]
【従来の技術】高炉の送風支管系は、１２００℃を超え
る高温かつ３．５ｋｇｆ／ｃｍ2 の圧力を有する熱風を
各羽口に通ずることからその使用条件は苛酷である。内
面の耐火物の損傷に起因する赤熱や各構成部間の接続フ
ランジ間からの熱風の漏洩等のために高炉を休止して各
送風支管系を取り替える必要がある。そして、これらの
事故による取り替えに対応するために、又は事故を予防
するための事前取り替え等のために、送風支管系の各構
成部は消耗部品として予備品の保管、管理が必要とな
る。これらの予備品は、大型高炉では約４０箇所ある各
羽口の送風支管系において、寸法形状を同一として共通
化しておくことが設備管理及び予備品管理上得策であ
る。このためには、各羽口において、それぞれに対応す
る支元管下端フランジから羽口の炉外側とブローパイプ
との摺り合わせ部までを共通の寸法で、据え付けておく
ことが不可欠の条件となる。しかし、環状管は、炉体櫓
から吊下げ支持されているのに対し、羽口が取付けられ
る炉体は、炉体櫓の基礎とは異なり、炉体基礎の上に据
え付けられるため、据付け時点で環状管と各羽口間を設
計寸法通りに共通とすることは、部材の製作精度と据え
付け精度上から難しい。 2. Description of the Related Art The blowing branch system of a blast furnace is used under severe conditions because hot air having a temperature exceeding 1200 ° C. and a pressure of 3.5 kgf / cm 2 is passed through each tuyere. It is necessary to shut down the blast furnace and replace each blower branch system due to red heat caused by damage to the refractory on the inner surface and leakage of hot air from between the connecting flanges between the components. Then, in order to cope with the replacement due to these accidents, or for the prior replacement to prevent the accidents, etc., each component of the ventilation branch pipe system needs to store and manage spare parts as consumable parts. It is advisable from the viewpoint of facility management and spare part management that these spare parts have the same dimensions and shape in the blower branch system of each tuyere at about 40 locations in a large blast furnace. For this purpose, it is indispensable for each tuyere to be installed with a common dimension from the corresponding base pipe lower end flange to the rubbing portion of the tuyere outside and the blow pipe with the blow pipe. . However, while the annular tube is suspended from the furnace tower, the tuyere to which the tuyere is attached is different from the base of the furnace tower. It is difficult to make the annular pipe and each tuyere common according to the design dimensions from the viewpoint of the manufacturing accuracy and the installation accuracy of the member.
【０００３】この問題を解消するため、例えば、高炉の
建設時のごとく、上架されて据え付けられた新設の環状
管に各支元管を据え付けるときには、羽口の基準点（羽
口とブローパイプの摺り合わせ部、あるいはこれに替わ
る羽口金物等）と支元管下端フランジ間の設計寸法と同
一の寸法を有する寸法調整用のゲージを作成し、該ゲー
ジの下端を羽口の基準点にセット後、設計図に従った水
平度、倒れを保ってゲージを固定した状態で、ゲージ上
端と支元管下端フランジを当接させ、支元管を環状管に
仮付けすることにより支元管の位置決めを完了する。そ
の後、ゲージを隣接する羽口に移送して、逐次前記作業
を行うことにより、各羽口とそれに対応する支元管下端
フランジ間は、各送風支管系で図面上の共通の寸法を精
度良く保つことができる。支元管は環状管に本溶接さ
れ、強固に固定されて据え付けられた後、内面の耐火物
の施工を行う。その後、羽口及び各送風支管構成部を取
付け、送風支管系の構築は完了する。In order to solve this problem, for example, when each base pipe is installed on a newly installed annular pipe that is overlaid and installed, as in the construction of a blast furnace, the reference points of the tuyere (the tuyere and the blow pipe) Create a gauge for dimension adjustment having the same dimension as the design dimension between the sliding part or the tuyere hardware that replaces it and the lower flange of the base pipe, and set the lower end of the gauge to the reference point of the tuyere. Later, with the gage fixed while keeping the horizontality and falling down according to the design drawing, the upper end of the gage and the lower flange of the base pipe are brought into contact, and the base pipe is temporarily attached to the annular pipe to fix the base pipe. Complete positioning. Thereafter, the gauge is transferred to an adjacent tuyere, and by sequentially performing the above-mentioned operation, a common dimension on the drawing between each tuyere and the corresponding base pipe lower end flange is accurately determined by each air blow branch system. Can be kept. The base pipe is fully welded to the annular pipe, firmly fixed and installed, and then the inner refractory is installed. After that, the tuyere and each blower branch pipe component are attached, and the construction of the blower branch pipe system is completed.
【０００４】高炉の改修等で支元管が既に環状管に固定
されている場合は、支元管下端フランジと送風支管の間
に調整短管を挿入し、前記手順と同様にゲージを用いて
調整短管の上流、あるいは下流側フランジ面を調整する
こと等の方法で各送風支管系の寸法を共通化することが
可能である。上記のごとく、ゲージを使用することによ
り、精度よく送風支管系を構築することが可能であっ
た。If the base pipe has already been fixed to the annular pipe due to repair of the blast furnace, etc., an adjusting short pipe is inserted between the lower end flange of the base pipe and the blower branch pipe, and a gauge is used in the same manner as in the above procedure. By adjusting the upstream or downstream flange surface of the adjustment short pipe, it is possible to standardize the dimensions of the respective blow branch systems. As described above, by using the gauge, it was possible to accurately construct the ventilation branch pipe system.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記従
来の高炉送風支管系の構築方法においては、ゲージが長
尺で、かつ重量も大きいため、寸法調整と溶接等の為の
高所作業用の足場と共に各羽口間を炉周に沿って羽口デ
ッキ上を移送する作業に多くの工数を要した。このた
め、作業の経済性と作業時間上の問題があると共に、障
害物の多い建設現場での移送と調整作業を安全に行うた
めの搬送手段と移送スペースを確保することは容易でな
いという問題があった。本発明はかかる事情に鑑みてな
されたもので、工数を少なくし、工期を短縮することが
できる高炉送風支管系の構築方法と構築用装置を提供す
ることを目的とする。However, in the above-mentioned conventional method of constructing a blast-furnace blast tube system, since the gauge is long and heavy, a scaffold for working at heights for dimensional adjustment and welding is required. At the same time, a lot of man-hours were required for the work of transferring the tuyere along the furnace circumference on the tuyere deck. Therefore, there are problems in terms of work economy and work time, and it is not easy to secure a transfer means and a transfer space for safely performing transfer and adjustment work in a construction site having many obstacles. there were. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and an apparatus for constructing a blast furnace ventilation branch pipe system capable of reducing man-hours and shortening a construction period.
【０００６】[0006]
【課題を解決するための手段】前記目的に沿う本発明に
係る高炉送風支管系の構築方法は、高炉の各支元管と、
該各支元管に対応する羽口の間の相対据付位置を寸法調
整用のゲージを用いて寸法調整して前記高炉の送風支管
系を構築する方法において、前記ゲージを環状管の下部
に設けたガイド部材に懸架された架台に載置して炉体円
周方向に移動させる。各支元管は、炉体円周方向に所定
間隔おきに並設されている。したがって、炉体を囲繞す
る環状管の下部に設けたガイド部材に懸架された架台と
共にゲージを円周方向に移動させることが可能となるの
で、ゲージの移動工数を少なくし、工期を短縮すること
ができる。また、上記架台は高所作業用の足場として利
用することも可能であり、該足場の移動に係る工数の減
少も可能となる。前記目的に沿う本発明に係る高炉送風
支管系の構築用装置は、高炉の各支元管と、該各支元管
に対応する羽口の間の相対据付位置を寸法調整して前記
高炉の送風支管系を構築する装置において、環状管の下
部に懸垂支持されたガイド部材と、前記ガイド部材に走
行装置を介して懸架され、前記環状管の下位置を炉体円
周方向に移動可能な架台と、該架台に支持された寸法調
整用のゲージとを有する。According to the present invention, there is provided a method for constructing a blast furnace blower branch system according to the present invention, comprising the steps of:
In a method of constructing a blower branch system of the blast furnace by adjusting a relative installation position between tuyeres corresponding to the respective base pipes using a gauge for dimension adjustment, the gauge is provided at a lower portion of an annular pipe. Is placed on a gantry suspended by the guide member and moved in the circumferential direction of the furnace body. The support pipes are arranged side by side at predetermined intervals in the circumferential direction of the furnace body. Therefore, it is possible to move the gauge in the circumferential direction together with the gantry suspended by the guide member provided at the lower part of the annular pipe surrounding the furnace body, thereby reducing the man-hour for moving the gauge and shortening the construction period. Can be. In addition, the gantry can be used as a scaffold for working at heights, and the number of steps related to the movement of the scaffold can be reduced. The apparatus for constructing a blast furnace ventilation branch pipe system according to the present invention, which meets the above-mentioned object, adjusts a relative installation position between each base pipe of the blast furnace and a tuyere corresponding to each base pipe to adjust the size of the blast furnace. In an apparatus for constructing a blower branch system, a guide member suspended from a lower part of an annular pipe and a guide member suspended from a traveling device so as to be movable in a furnace body circumferential direction at a lower position of the annular pipe. It has a gantry and a gauge for dimensional adjustment supported by the gantry.
【０００７】このように構成することによって、ゲージ
の移動、及び設置を簡単に行うことができる。ここで、
前記架台には、前記ゲージの少なくとも上部を回動可能
に支持する支持部を設け、前記支持部を、前記ゲージを
前記支元管と羽口の間の調整位置に当接させたときの前
記ゲージの重心点より環状管側に設けることも可能であ
る。ここで、ゲージの少なくとも上部を回動可能に支持
する、の上部とは、ゲージを上部及び下部に分割した場
合の上部をいう。ゲージを支持部に載置すると、ゲージ
は、重心を支持部の直下方に回動させて安定しようとす
る。したがって、支持部を重心点より環状管側に設ける
ことによって、ゲージの下部及び上部をそれぞれの寸法
調整のための所定の当接位置から離反させた状態で、ゲ
ージを支持することができるので、ゲージを当接状態か
ら容易に外すことが可能であり、また、隣接した次の支
元管部の調整位置の移送後の当接作業も容易となること
から作業工数を少なくして迅速に作業を行うことができ
る。[0007] With this configuration, the gauge can be easily moved and installed. here,
The gantry is provided with a support portion that rotatably supports at least an upper portion of the gauge, and the support portion is configured such that the gauge is brought into contact with an adjustment position between the base tube and the tuyere. It is also possible to provide the gauge on the annular pipe side from the center of gravity of the gauge. Here, the upper part of the gauge that rotatably supports at least the upper part of the gauge means the upper part when the gauge is divided into an upper part and a lower part. When the gauge is placed on the support, the gauge attempts to stabilize by rotating the center of gravity just below the support. Therefore, by providing the support portion on the annular pipe side from the center of gravity, the gauge can be supported in a state in which the lower portion and the upper portion of the gauge are separated from predetermined contact positions for the respective dimensional adjustments. The gauge can be easily removed from the abutment state, and the abutment work after the transfer of the adjustment position of the next adjacent base pipe section becomes easy, so the number of man-hours is reduced and the work is performed quickly. It can be performed.
【０００８】[0008]
【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態について説明し、本
発明の理解に供する。図１、図２に示すように、本発明
の一実施の形態に係る高炉送風支管系の構築用装置１０
は、高炉１１の各支元管１２と、各支元管１２に対応す
る図示しない羽口の間の相対据付位置を寸法調整して図
示しない送風支管系を構築する場合に使用する装置にお
いて、環状管１４の下部に懸垂支持されたガイド部材の
一例であるレール１５と、レール１５に走行装置の一例
である車輪１６を介して懸架され、環状管１４の下位置
を炉周方向に移動可能な架台１７と、架台１７に支持さ
れた寸法調整用のゲージ１８とを有している。以下、詳
しく説明する。レール１５は、例えばＩ形鋼等からなっ
て、環状管１４の下端部に沿って全周に亘って図示しな
い支持部材を介して設けられている。また、羽口の基準
点を規定する羽口金物１３の直上部の高炉１１の外周に
は、所定間隔ごとに取付けられた複数のＬ字状の支持ブ
ラケット１９を介してＨ形鋼やＩ形鋼等からなるレール
２０が設けられている。そして、平面視して矩形形状の
架台１７は、羽口金物１３と、これに対応する支元管１
２の中間に水平状態で前記したレール１５、２０を介し
て移動可能に支持されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. As shown in FIGS. 1 and 2, an apparatus 10 for constructing a blast-furnace blast system according to an embodiment of the present invention.
In the apparatus used when adjusting the relative installation position between each base pipe 12 of the blast furnace 11 and a tuyere (not shown) corresponding to each base pipe 12 to construct a blower branch system (not shown), A rail 15 as an example of a guide member suspended from the lower part of the annular tube 14 and a wheel 16 as an example of a traveling device are suspended from the rail 15 so that the lower position of the annular tube 14 can be moved in a furnace circumferential direction. The pedestal 17 includes a pedestal 17 and a gauge 18 supported by the pedestal 17 for dimension adjustment. The details will be described below. The rail 15 is made of, for example, an I-shaped steel, and is provided along a lower end of the annular pipe 14 over a whole circumference via a support member (not shown). Further, on the outer periphery of the blast furnace 11 immediately above the tuyere fitting 13 that defines the reference point of the tuyere, an H-shaped steel or an I-shaped steel is provided via a plurality of L-shaped support brackets 19 attached at predetermined intervals. A rail 20 made of steel or the like is provided. The base 17 having a rectangular shape in plan view includes the tuyere fitting 13 and the corresponding base tube 1.
It is movably supported via the rails 15 and 20 in a horizontal state between the two.
【０００９】架台１７の環状管１４側の上部には、高さ
調整フレーム２２を介してレール１５に走行可能に懸架
されるギヤトロリ２１（手動走行装置）の複数の車輪１
６が取付けられている。また、架台１７の高炉１１側の
下部には、レール２０に走行可能に載置される複数の車
輪２３が取付けられている。ギヤトロリ２１の駆動車輪
を操作することによって架台１７をレール１５、２０に
沿って移動させることができる。架台１７の中央の上方
には、ゲージ１８の上部を載置して、回動可能に支持す
る半円筒状の支持部３５が、架台１７に立設するゲージ
支持部材２４の頂部に設けられている。支持部３５の位
置は、ゲージ１８を支元管１２と羽口の間の調整位置に
当接させたときのゲージ１８の重心点Ｇより環状管１４
側になるようにしており、ゲージ１８の回動方向を図１
において、支持部３５を支点として左回りになるように
規制している。架台１７の高炉１１側の端部には、ゲー
ジ１８を吊り下げるチェーンブロック２５を設けたワイ
ヤロープ５３の一端が取付けられており、架台１７の中
央付近には、ゲージ支持部材２４の設置位置をよけてゲ
ージ１８を挿通可能な開口部２６が架台１７上面の作業
デッキ部に形成されている。A plurality of wheels 1 of a gear trolley 21 (manual traveling device) suspended on a rail 15 via a height adjusting frame 22 are provided on an upper portion of the gantry 17 on the side of the annular pipe 14.
6 are attached. Further, a plurality of wheels 23 mounted on the rail 20 so as to be able to travel is attached to a lower portion of the gantry 17 on the blast furnace 11 side. The gantry 17 can be moved along the rails 15 and 20 by operating the drive wheels of the gear trolley 21. Above the center of the gantry 17, a semi-cylindrical support portion 35 on which the upper portion of the gauge 18 is placed and rotatably supported is provided on the top of the gauge support member 24 erected on the gantry 17. I have. The position of the support portion 35 is determined by the center of gravity G of the gauge 18 when the gauge 18 is brought into contact with the adjustment position between the base tube 12 and the tuyere.
Side, and the rotating direction of the gauge 18 is shown in FIG.
In the above, the support portion 35 is regulated so as to turn counterclockwise with the fulcrum as a fulcrum. At the end of the gantry 17 on the blast furnace 11 side, one end of a wire rope 53 provided with a chain block 25 for suspending the gauge 18 is attached. Near the center of the gantry 17, the installation position of the gauge support member 24 is determined. An opening 26 through which the gauge 18 can be inserted is formed in the work deck on the upper surface of the gantry 17.
【００１０】ゲージ１８は、先端部に羽口の基準点とな
る羽口金物１３の内周に当接する複数枚の位置決め板２
７を備え、羽口金物１３内に嵌入される水平基準部材２
８と、支元管１２の下部に設けられた支元管下端フラン
ジ２９に当接する支元管位置決め部材３０と、水平基準
部材２８と支元管位置決め部材３０とを着脱可能に連結
する垂直基準部材３１とを有し、全体としてＬ字形にな
っている。垂直基準部材３１の下部には一端が架台１７
に取付けられたワイヤロープ５３の他側の端部が取付け
られ、また、支元管位置決め部材３０の上部は、環状管
１４の上部とチェーンブロック３２を設けたワイヤロー
プ５４によって連結されており、チェーンブロック２
５、３２を操作することによってゲージ１８は上下動可
能となっており、荒芯出しを行うことができる。[0010] The gauge 18 has a plurality of positioning plates 2 which are in contact with the inner periphery of the tuyere fitting 13 at the tip thereof, which serves as a reference point of the tuyere.
7 and a horizontal reference member 2 fitted into the tuyere hardware 13.
8, a base pipe positioning member 30 abutting on a base pipe lower end flange 29 provided below the base pipe 12, and a vertical reference for detachably connecting the horizontal reference member 28 and the base pipe positioning member 30. And an L-shape as a whole. At the bottom of the vertical reference member 31, one end
The other end of the wire rope 53 attached to the support pipe positioning member 30 is attached, and the upper part of the support pipe positioning member 30 is connected to the upper part of the annular pipe 14 by a wire rope 54 provided with the chain block 32. Chain block 2
By operating 5, 32, the gauge 18 can be moved up and down, and rough centering can be performed.
【００１１】支元管位置決め部材３０の、環状管１４の
支元管下端フランジ２９の当接面の中心の下方には、下
向きに円弧状溝を形成した載置部３４が支持部３５に載
置可能に設けられている。水平基準部材２８の上部には
水平器３９が設けられ、また、支元管位置決め部材３
０、及びこれに連通する垂直基準部材３１の内部には重
錘５２が設けられており、ゲージ１８の設置位置を調整
することができる。なお、ゲージ１８の使用時には、支
元管位置決め部材３０及び垂直基準部材３１と高炉１１
の側部は、着脱可能なターンバックル３７、３８をそれ
ぞれ有する姿勢微調整手段５０、５１でそれぞれ接続さ
れ、設置位置の微調整を行うことができる。ゲージ１８
を設置したときは、垂直基準部材３１の上端部が、架台
１７の開口部２６より少し上方位置になるように架台１
７の高さを設定している。作業者は、ゲージ１８の下方
にある羽口デッキ３６上及び架台１７上でゲージ１８を
操作し、また、ギヤトロリ２１を操作して架台１７を移
動させることができる。Below the center of the abutment surface of the lower end flange 29 of the annular pipe 14 of the support pipe positioning member 30, a mounting section 34 having a downwardly arcuate groove is mounted on the support section 35. It is provided so that it can be installed. At the upper part of the horizontal reference member 28, a leveler 39 is provided.
A weight 52 is provided inside the zero and the vertical reference member 31 communicating therewith, so that the installation position of the gauge 18 can be adjusted. When the gauge 18 is used, the base pipe positioning member 30 and the vertical reference member 31 and the blast furnace 11
Are connected by attitude fine adjustment means 50 and 51 having detachable turnbuckles 37 and 38, respectively, so that the installation position can be finely adjusted. Gauge 18
Is installed, the gantry 1 is positioned such that the upper end of the vertical reference member 31 is slightly higher than the opening 26 of the gantry 17.
7 is set. The operator can operate the gauge 18 on the tuyere deck 36 and the gantry 17 below the gauge 18, and can move the gantry 17 by operating the gear trolley 21.
【００１２】続いて、高炉送風支管系の構築用装置１０
を使用した構築方法について説明する。高炉送風支管系
の構築方法は、高炉１１の各支元管１２と、各支元管１
２に対応する羽口の間の相対据付位置をゲージ１８を用
いて寸法調整して送風支管系を構築する方法において、
ゲージ１８を環状管１４の下部に設けたレール１５に懸
架された架台１７に載置して炉体円周方向に移動させて
行う。まず、環状管１４に形成された開口部に据え付け
られるべき支元管１２を、環状管１４に、図示しない仮
支持具により仮保持しておく。レール１５、２０にセッ
トした架台１７の支持部３５に支元管位置決め部材３０
の載置部３４を載せ、また、垂直基準部材３１の下部を
チェーンブロック２５を設けたワイヤロープ５３で架台
１７に接続する。このときゲージ１８の支元管位置決め
部材３０及び垂直基準部材３１は、連結された状態で図
１に二点鎖線で示す位置に支持されており、ゲージ１８
の水平基準部材２８は、垂直基準部材３１との連結を解
除された状態となっている。Subsequently, an apparatus 10 for constructing a blast furnace air blowing branch system.
The construction method using is described. The method of constructing the blast furnace air blowing branch system is as follows.
In the method of adjusting the relative installation position between the tuyeres corresponding to No. 2 using the gauge 18 and constructing the ventilation branch pipe system,
The gauge 18 is placed on a gantry 17 suspended on a rail 15 provided below the annular pipe 14 and is moved in the circumferential direction of the furnace body. First, the support pipe 12 to be installed in the opening formed in the annular pipe 14 is temporarily held in the annular pipe 14 by a temporary support (not shown). The support pipe positioning member 30 is attached to the support portion 35 of the gantry 17 set on the rails 15 and 20.
And the lower part of the vertical reference member 31 is connected to the gantry 17 by a wire rope 53 provided with the chain block 25. At this time, the base pipe positioning member 30 and the vertical reference member 31 of the gauge 18 are supported at the position shown by the two-dot chain line in FIG.
Is disconnected from the vertical reference member 31.
【００１３】次に、羽口デッキ３６上からギヤトロリ２
１を操作して、架台１７をレール１５、２０に沿って所
定の羽口金物１３の後方（炉外側）まで移動する。そし
て、水平基準部材２８を羽口金物１３内に嵌入し、位置
決め板２７を羽口金物１３の内周に当接させ、チェーン
ブロック２５、３２を操作して、水平基準部材２８を垂
直基準部材３１の端部に接続し、支元管位置決め部材３
０の上端部を仮支持具を外した支元管１２に当接して荒
芯出しを行う。続いて、高炉１１の鉄皮に上下２枚の取
付け板４９をそれぞれ所定箇所に取付け、取付け板４９
を介してゲージ１８の上下２箇所にターンバックル３
７、３８をそれぞれ備えた姿勢微調整手段５０、５１を
取付ける。次いで、ゲージ１８の水平基準部材２８に取
付けた水平器３９、及び支元管位置決め部材３０及び垂
直基準部材３１の内部に垂下する重錘５２を使用し、タ
ーンバックル３７、３８を調整して垂直、水平の芯出し
を行い、シックネスゲージを使用して、位置決め板２７
の当接位置の均一を確認する。Next, the gear trolley 2 is placed on the tuyere deck 36 from above.
By operating 1, the gantry 17 is moved along the rails 15 and 20 to the rear (furnace outside) of a predetermined tuyere fitting 13. Then, the horizontal reference member 28 is fitted into the tuyere fitting 13, the positioning plate 27 is brought into contact with the inner periphery of the tuyere fitting 13, and the chain blocks 25 and 32 are operated to connect the horizontal reference member 28 to the vertical reference member 13. 31 is connected to the end of the support pipe positioning member 3
The upper end of 0 is brought into contact with the base tube 12 from which the temporary support has been removed, and rough centering is performed. Subsequently, the upper and lower two mounting plates 49 are mounted on the steel shell of the blast furnace 11 at predetermined positions, respectively.
Turnbuckle 3 at two places above and below gauge 18
Attachment fine adjustment means 50 and 51 provided with 7 and 38 respectively are attached. Next, using the leveling device 39 attached to the horizontal reference member 28 of the gauge 18 and the weight 52 hanging inside the base pipe positioning member 30 and the vertical reference member 31, the turnbuckles 37, 38 are adjusted to be vertical. , Horizontal centering, using a thickness gauge, positioning plate 27
Check that the contact position is uniform.
【００１４】芯出し完了後は、環状管１４に支元管１
２、ダブリング、及び補強リブの仮付けを行った後、本
溶接を行う。溶接完了後は、姿勢微調整手段５０、５１
を取外し、水平基準部材２８の垂直基準部材３１との連
結を解除し、チェーンブロック２５、３２を操作して支
元管位置決め部材３０の載置部３４を支持部３５に載せ
る。ゲージ１８の重心点Ｇが支持部３５に対し高炉１１
側の下方位置（図１において左下）にあるので、支元管
位置決め部材３０及び垂直基準部材３１は左回りに回動
し、支元管位置決め部材３０と支元管下端フランジ２９
の当接部、及び垂直基準部材３１と水平基準部材２８の
連結部は共に離反する方向に動くことから、ゲージ１８
を容易に移動可能な状態にすることができる。その後、
チェーンブロック３２を設けたワイヤロープ５４を取外
して、架台１７を炉体円周方向に移動させることによっ
て、次の支元管１２の取付け部まで移動する。このよう
にして、ゲージ１８を迅速に移動させることができる。
なお、水平基準部材２８と垂直基準部材３１を丁番を使
用して屈曲可能に接続しておくことによってゲージ１８
を分解しないで移動させることも可能である。After the centering is completed, the support pipe 1 is attached to the annular pipe 14.
2. After the doubling and the reinforcing ribs are temporarily attached, the main welding is performed. After the welding is completed, the posture fine adjustment means 50, 51
Then, the connection between the horizontal reference member 28 and the vertical reference member 31 is released, and the mounting portions 34 of the support pipe positioning members 30 are mounted on the support portions 35 by operating the chain blocks 25 and 32. The center of gravity G of the gauge 18 is aligned with the supporting part 35 by the blast furnace 11.
In the lower position (lower left in FIG. 1), the base pipe positioning member 30 and the vertical reference member 31 rotate counterclockwise, and the base pipe positioning member 30 and the base pipe lower end flange 29 are rotated.
Since the abutting portion and the connecting portion between the vertical reference member 31 and the horizontal reference member 28 both move away from each other, the gauge 18
Can be easily moved. afterwards,
By removing the wire rope 54 provided with the chain block 32 and moving the gantry 17 in the circumferential direction of the furnace body, the gantry 17 moves to the next mounting portion of the base pipe 12. Thus, the gauge 18 can be quickly moved.
In addition, by connecting the horizontal reference member 28 and the vertical reference member 31 to bendable using a hinge, the gauge 18
Can be moved without disassembly.
【００１５】次に本発明の変形例に係る高炉送風支管系
の構築用装置４０について図３、図４を用いて説明す
る。高炉送風支管系の構築用装置４０は、高炉送風支管
系の構築用装置１０の架台１７の一部を変更した架台４
２を使用しているが、他の部分の構造は同じにしている
ので、高炉送風支管系の構築用装置１０で使用した部材
と同一の部材には同一番号を付し、説明は省略する。架
台４２の上部の作業デッキに形成された開口部４３の中
央付近には、支元管位置決め部材３０の下端に形成され
たフランジ部４４の周縁の一部を載置できる縮幅部４５
を形成している。また、架台４２の中央付近の上部に
は、円柱形状の支持部４７が、開口部４３を挟んで平行
に立設した一対のゲージ支持部材４６の上端部に水平に
架け渡して設けられている。そして、架台４２の中央付
近の下部には、垂直基準部材３１を懸架するチェーンブ
ロック４１を設けたワイヤロープ５５が設けられてい
る。Next, an apparatus 40 for constructing a blast-furnace branch pipe system according to a modification of the present invention will be described with reference to FIGS. The apparatus 40 for constructing a blast furnace blast system includes a gantry 4 in which a part of the gantry 17 of the apparatus 10 for constructing a blast furnace blast system is modified.
2 are used, but since the structure of the other parts is the same, the same members as those used in the apparatus 10 for constructing the blast-furnace ventilation branch pipe system are given the same numbers, and descriptions thereof are omitted. In the vicinity of the center of the opening 43 formed in the work deck at the top of the gantry 42, a reduced width portion 45 on which a part of the periphery of the flange portion 44 formed at the lower end of the support pipe positioning member 30 can be placed.
Is formed. In addition, a column-shaped support portion 47 is provided in the upper portion near the center of the gantry 42 so as to extend horizontally across a pair of gauge support members 46 erected in parallel with the opening 43 interposed therebetween. . A wire rope 55 provided with a chain block 41 for suspending the vertical reference member 31 is provided at a lower portion near the center of the gantry 42.
【００１６】構築用装置４０の使用時において、ゲージ
１８を移動するときには、水平基準部材２８と垂直基準
部材３１は連結された状態で、支元管位置決め部材３０
は垂直基準部材３１との連結を解除された状態となって
いる。水平基準部材２８と垂直基準部材３１は、ワイヤ
ロープ５３、５５によって架台４２に吊り下げられ、支
元管位置決め部材３０は、支持部４７と、縮幅部４５の
両外側部に形成された支持板部３３によって下方から支
持されている。この状態で、架台４２及び分割されたゲ
ージ１８は、レール１５、２０に沿って移動することが
できる。ゲージ１８の取付け、取外しは、以下の手順に
よって行う。支元管１２の施工時に支元管位置決め部材
３０の上部にチェーンブロック３２を設けたワイヤロー
プ５４を取付け、これを操作して支元管位置決め部材３
０を上方に引き上げると、支元管位置決め部材３０は支
持部４７を中心に回動し、フランジ部４４が架台４２の
上面から離反する。When the gauge 18 is moved when the construction device 40 is used, the horizontal reference member 28 and the vertical reference member 31 are connected to each other while the support pipe positioning member 30 is connected.
Is in a state where the connection with the vertical reference member 31 is released. The horizontal reference member 28 and the vertical reference member 31 are suspended from the gantry 42 by wire ropes 53 and 55, and the support pipe positioning member 30 is supported by support portions 47 and support portions formed on both outer portions of the reduced width portion 45. It is supported from below by the plate portion 33. In this state, the gantry 42 and the divided gauge 18 can move along the rails 15 and 20. Attachment and removal of the gauge 18 are performed according to the following procedure. At the time of installing the base pipe 12, a wire rope 54 provided with the chain block 32 is attached to the upper part of the base pipe positioning member 30, and this is operated to operate the base pipe positioning member 3.
When 0 is pulled upward, the support pipe positioning member 30 rotates about the support portion 47, and the flange portion 44 separates from the upper surface of the gantry 42.
【００１７】この状態で、チェーンブロック２５、４１
を操作して水平基準部材２８及びこれに連結された垂直
基準部材３１を高炉１１側に移動し、垂直基準部材３１
の上端フランジ４８を支元管位置決め部材３０のフラン
ジ部４４の下方に挿入する。そして、上端フランジ４８
とフランジ部４４を連結し、ゲージ１８を組み立てる。
次に、チェーンブロック２５、３２、４１を操作して、
支元管位置決め部材３０の上端部を支元管１２に当接し
荒芯出しを行う。以下、前記実施の形態と同様の手順で
支元管１２の溶接を行う。ゲージ１８の取外しは、上記
した取付け手順の逆の操作手順により行われる。ゲージ
１８の重心点Ｇが支持部４７より炉体側にあることから
ゲージ１８は支持部４７を中心に回動し支元管位置決め
部材３０と支元管下端フランジ２９、及び水平基準部材
２８と羽口金物１３の離反を容易にすることができる。
このように構成することによって、ゲージ１８の分割位
置を変えてもゲージ１８の取付け、取外しとその搬送を
簡単に行えることから容易に支元管１２を構築すること
ができる。In this state, the chain blocks 25, 41
Is operated to move the horizontal reference member 28 and the vertical reference member 31 connected thereto to the blast furnace 11 side.
Is inserted below the flange portion 44 of the support pipe positioning member 30. And the upper end flange 48
And the flange portion 44 are connected, and the gauge 18 is assembled.
Next, operate the chain blocks 25, 32, 41,
The upper end of the support pipe positioning member 30 is brought into contact with the support pipe 12 to perform rough centering. Hereinafter, the welding of the base pipe 12 is performed in the same procedure as in the above embodiment. The removal of the gauge 18 is performed according to an operation procedure reverse to the above-described installation procedure. Since the center of gravity G of the gauge 18 is closer to the furnace body than the support portion 47, the gauge 18 rotates about the support portion 47 and the support pipe positioning member 30, the support pipe lower end flange 29, the horizontal reference member 28, and the blade. Separation of the base 13 can be facilitated.
With such a configuration, even when the dividing position of the gauge 18 is changed, the mounting, detaching, and transport of the gauge 18 can be easily performed, so that the base pipe 12 can be easily constructed.
【００１８】以上、本発明に係る実施の形態について説
明してきたが、本発明は、前記実施の形態に限定される
ものではなく、例えば、ゲージの位置決め板２７をゲー
ジ本体から着脱可能にしておき、これを取外した後、支
持部３５、４７を支点にゲージ本体を回動させ高炉１１
及び支元管１２から離反させることによって、ゲージ本
体を分割しないで移動させることも可能である。また、
前記実施の形態では、架台１７、４２を環状管１４の下
部に設けたレール１５と、高炉の外周に設けたレール２
０に取付けて使用したが、レール１５、２０の替わりに
２本のレールを環状管１４に設け、これに架台１７、４
２を移動可能に取付けて使用することもできる。また、
レール１５としては、高炉１１の炉周辺作業用に一般的
に設置されるホイスト用のレールを流用すれば経済的で
ある。さらに、本実施の形態で使用したチェーンブロッ
クとターンバックルの数及び取付け位置は変更すること
ができ、安定性と作業性のバランスをとることができ
る。また、架台に設けられた支持部は、支元管位置決め
部材３０に設けているが、ゲージの重心位置より半径方
向外側（炉外側）であれば、これより下方で支持しても
よく、例えば、垂直基準部材３１に設けることも可能で
ある。Although the embodiment according to the present invention has been described above, the present invention is not limited to the above embodiment. For example, the positioning plate 27 of the gauge is detachable from the gauge body. After removing this, the gauge body is rotated around the support portions 35 and 47 as a fulcrum, and the blast furnace 11 is rotated.
By moving the gauge body away from the base tube 12, the gauge body can be moved without being divided. Also,
In the above embodiment, the rails 15 provided with the mounts 17 and 42 below the annular pipe 14 and the rails 2 provided on the outer periphery of the blast furnace
0, but two rails are provided in the annular pipe 14 in place of the rails 15 and 20, and
2 can be used movably mounted. Also,
It is economical to use a hoist rail generally installed for work around the furnace of the blast furnace 11 as the rail 15. Furthermore, the number and mounting positions of the chain block and the turnbuckle used in the present embodiment can be changed, so that stability and workability can be balanced. In addition, the support portion provided on the gantry is provided on the support pipe positioning member 30. However, if the support portion is located radially outward (outside the furnace) from the center of gravity of the gauge, the support portion may be supported below the position. , Vertical reference member 31.
【００１９】[0019]
【発明の効果】請求項１記載の高炉送風支管系の構築方
法においては、炉体を囲繞する環状管の下部に設けたガ
イド部材に懸架された架台と共に寸法調整用のゲージを
炉体円周方向に移動させることが可能となるので、寸法
調整用のゲージ及び作業用デッキの移動工数を少なく
し、工期も短縮することができ、また、作業の安全性を
向上させることができる。請求項２及び３記載の高炉送
風支管系の構築用装置においては、環状管の下位置に懸
垂支持されたガイド部材と、ガイド部材に走行装置を介
して懸架され、環状管の下部を炉体円周方向に移動可能
な架台と、架台に支持されたゲージとを有するので、ゲ
ージの移動、及び設置を簡単に行うことができる。特
に、請求項３記載の高炉送風支管系の構築用装置におい
ては、架台には、ゲージの少なくとも上部を回動可能に
支持する支持部を設けているので、ゲージの下部及び上
部をそれぞれの当接位置から離反させた状態で、ゲージ
を支持することができ、作業工数を少なくして迅速に作
業を行うことができる。According to the first aspect of the present invention, in the method of constructing a blast furnace blower branch system according to the first aspect, a gauge for dimension adjustment is provided together with a gantry suspended on a guide member provided at a lower portion of an annular pipe surrounding the furnace body. Since it is possible to move in the direction, the man-hour for moving the gauge for dimension adjustment and the work deck can be reduced, the work period can be shortened, and the safety of work can be improved. In the apparatus for constructing a blast-furnace ventilation branch pipe system according to claims 2 and 3, a guide member suspended and supported at a lower position of the annular pipe and a guide member suspended from the guide member via a traveling device, and a lower portion of the annular pipe being a furnace body Since it has a gantry movable in the circumferential direction and a gauge supported by the gantry, the gauge can be easily moved and installed. In particular, in the apparatus for constructing a blast furnace ventilation branch system according to the third aspect, since the gantry is provided with a support portion that rotatably supports at least the upper portion of the gauge, the lower portion and the upper portion of the gauge are respectively provided. The gauge can be supported in a state where it is separated from the contact position, and the work can be performed quickly with a reduced number of work steps.
【図１】本発明の一実施の形態に係る高炉送風支管系の
構築用装置の断面図である。FIG. 1 is a cross-sectional view of an apparatus for constructing a blast furnace ventilation branch system according to an embodiment of the present invention.
【図２】同構築用装置の平断面図である。FIG. 2 is a plan sectional view of the construction apparatus.
【図３】本発明の変形例に係る高炉送風支管系の構築用
装置の断面図である。FIG. 3 is a cross-sectional view of an apparatus for constructing a blast-furnace branch pipe system according to a modification of the present invention.
【図４】同構築用装置の平断面図である。FIG. 4 is a plan sectional view of the construction apparatus.
１０：高炉送風支管系の構築用装置、１１：高炉、１
２：支元管、１３：羽口金物、１４：環状管、１５：レ
ール（ガイド部材）、１６：車輪（走行装置）、１７：
架台、１８：ゲージ、１９：支持ブラケット、２０：レ
ール、２１：ギヤトロリ、２２：高さ調整フレーム、２
３：車輪、２４：ゲージ支持部材、２５：チェーンブロ
ック、２６：開口部、２７：位置決め板、２８：水平基
準部材、２９：支元管下端フランジ、３０：支元管位置
決め部材、３１：垂直基準部材、３２：チェーンブロッ
ク、３３：支持板部、３４：載置部、３５：支持部、３
６：羽口デッキ、３７、３８：ターンバックル、３９：
水平器、４０：高炉送風支管系の構築用装置、４１：チ
ェーンブロック、４２：架台、４３：開口部、４４：フ
ランジ部、４５：縮幅部、４６：ゲージ支持部材、４
７：支持部、４８：上端フランジ、４９：取付け板、５
０、５１：姿勢微調整手段、５２：重錘、５３〜５５：
ワイヤロープ10: Blast furnace ventilation branch system construction equipment, 11: Blast furnace, 1
2: base pipe, 13: tuyere fitting, 14: annular pipe, 15: rail (guide member), 16: wheel (traveling device), 17:
Mount, 18: gauge, 19: support bracket, 20: rail, 21: gear trolley, 22: height adjustment frame, 2
3: wheel, 24: gauge support member, 25: chain block, 26: opening, 27: positioning plate, 28: horizontal reference member, 29: base pipe lower end flange, 30: base pipe positioning member, 31: vertical Reference member, 32: chain block, 33: support plate portion, 34: mounting portion, 35: support portion, 3
6: Tuyere deck, 37, 38: Turnbuckle, 39:
Leveler, 40: Apparatus for constructing a blast furnace ventilation branch system, 41: Chain block, 42: Mount, 43: Opening, 44: Flange, 45: Reduced width, 46: Gauge support member, 4
7: support portion, 48: upper end flange, 49: mounting plate, 5
0, 51: posture fine adjustment means, 52: weight, 53 to 55:
Wire rope
フロントページの続き (72)発明者 久我 秀文 福岡県北九州市小倉北区清水３−13−25 (72)発明者 落合 康雄 福岡県北九州市若松区青葉台南２−９−17 (72)発明者 大江 清高 福岡県北九州市戸畑区大字中原46−59 新 日本製鐵株式会社エンジニアリング事業本 部内 (72)発明者 高崎 洋 福岡県北九州市戸畑区大字中原46−59 新 日本製鐵株式会社エンジニアリング事業本 部内日鐵プラント建設株式会社内 (72)発明者 久世 俊輔 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部設備技術開発センター高 炉グループ内日鐵プラント設計株式会社内 Ｆターム(参考） 4K015 FD05 FD08 Continued on the front page (72) Inventor Hidefumi Kuga 3-13-25, Shimizu, Kokurakita-ku, Kitakyushu-shi, Fukuoka (72) Inventor Yasuo Ochiai 2-9-17, Aobadaiminami, Wakamatsu-ku, Kitakyushu-shi, Fukuoka (72) Inventor Oe Kiyotaka 46-59, Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Engineering Business Headquarters (72) Inventor Hiroshi Takasaki 46-59, Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka New Engineering Business Headquarters, Nippon Steel Corporation Nippon Steel Plant Construction Co., Ltd. (72) Inventor Shunsuke Kuze 20-1 Shintomi, Futtsu City, Chiba Prefecture Nippon Steel Plant Design Co., Ltd. 4K015 FD05 FD08
Claims (3)
る羽口の間の相対据付位置を寸法調整用のゲージを用い
て寸法調整して前記高炉の送風支管系を構築する方法に
おいて、前記ゲージを環状管の下部に設けたガイド部材
に懸架された架台に載置して炉体円周方向に移動させる
ことを特徴とする高炉送風支管系の構築方法。A blast furnace system for the blast furnace is constructed by adjusting a relative installation position between each base pipe of the blast furnace and a tuyere corresponding to each base pipe using a gauge for size adjustment. A method for constructing a blast furnace air blower branch system, wherein the gauge is mounted on a gantry suspended by a guide member provided at a lower portion of the annular pipe and is moved in a circumferential direction of the furnace body.
る羽口の間の相対据付位置を寸法調整して前記高炉の送
風支管系を構築する装置において、環状管の下部に懸垂
支持されたガイド部材と、前記ガイド部材に走行装置を
介して懸架され、前記環状管の下位置を炉体円周方向に
移動可能な架台と、該架台に支持された寸法調整用のゲ
ージとを有することを特徴とする高炉送風支管系の構築
用装置。2. An apparatus for adjusting a relative installation position between each base pipe of a blast furnace and a tuyere corresponding to each base pipe to construct a blowing branch system of the blast furnace, wherein the lower part of the annular pipe is provided. A guide member suspended and supported by the guide member via a traveling device, a gantry capable of moving a lower position of the annular tube in a furnace body circumferential direction, and a dimensional adjustment supported by the gantry. An apparatus for constructing a blast-furnace branch system for a blast furnace, characterized by having a gauge.
装置において、前記架台には、前記ゲージの少なくとも
上部を回動可能に支持する支持部が設けられ、前記支持
部は、前記ゲージを前記支元管と羽口の間の調整位置に
当接させたときの前記ゲージの重心点より環状管側にあ
ることを特徴とする送風支管系の構築用装置。3. The apparatus for constructing a blast-furnace branch pipe system according to claim 2, wherein the gantry is provided with a support for rotatably supporting at least an upper portion of the gauge, and the support is provided with the gauge. The apparatus for constructing a blower branch pipe system, which is located closer to the annular pipe than the center of gravity of the gauge when it is brought into contact with the adjustment position between the base pipe and the tuyere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000214184A JP3745946B2 (en) | 2000-07-14 | 2000-07-14 | Blast furnace blast branch system construction method and construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000214184A JP3745946B2 (en) | 2000-07-14 | 2000-07-14 | Blast furnace blast branch system construction method and construction equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002030318A true JP2002030318A (en) | 2002-01-31 |
| JP3745946B2 JP3745946B2 (en) | 2006-02-15 |
Family
ID=18709808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000214184A Expired - Fee Related JP3745946B2 (en) | 2000-07-14 | 2000-07-14 | Blast furnace blast branch system construction method and construction equipment |
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| Country | Link |
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| JP (1) | JP3745946B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041307A (en) * | 2001-07-27 | 2003-02-13 | Sankyu Inc | Adjustment device for attaching branch base blast-pipe |
| KR100899358B1 (en) * | 2007-09-21 | 2009-05-26 | 삼진공작 (주) | Construction method of annular support structure |
| JP2018016857A (en) * | 2016-07-28 | 2018-02-01 | 新日鐵住金株式会社 | Reinforcement structure of blast furnace equipment |
| CN112082030A (en) * | 2020-09-29 | 2020-12-15 | 广东利元亨智能装备股份有限公司 | Tuyere fixing device and method |
-
2000
- 2000-07-14 JP JP2000214184A patent/JP3745946B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041307A (en) * | 2001-07-27 | 2003-02-13 | Sankyu Inc | Adjustment device for attaching branch base blast-pipe |
| KR100899358B1 (en) * | 2007-09-21 | 2009-05-26 | 삼진공작 (주) | Construction method of annular support structure |
| JP2018016857A (en) * | 2016-07-28 | 2018-02-01 | 新日鐵住金株式会社 | Reinforcement structure of blast furnace equipment |
| CN112082030A (en) * | 2020-09-29 | 2020-12-15 | 广东利元亨智能装备股份有限公司 | Tuyere fixing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3745946B2 (en) | 2006-02-15 |
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