JPH01275710A - Method of disassembling blast furnace - Google Patents
Method of disassembling blast furnaceInfo
- Publication number
- JPH01275710A JPH01275710A JP10583588A JP10583588A JPH01275710A JP H01275710 A JPH01275710 A JP H01275710A JP 10583588 A JP10583588 A JP 10583588A JP 10583588 A JP10583588 A JP 10583588A JP H01275710 A JPH01275710 A JP H01275710A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- blast furnace
- hole
- residual
- drill body
- 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
- 238000000034 method Methods 0.000 title claims description 11
- 238000005422 blasting Methods 0.000 claims abstract description 18
- 239000011819 refractory material Substances 0.000 claims abstract description 9
- 229910000805 Pig iron Inorganic materials 0.000 claims description 31
- 238000005553 drilling Methods 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 230000003028 elevating effect Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims 1
- 239000003721 gunpowder Substances 0.000 abstract description 10
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 abstract 1
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 240000001549 Ipomoea eriocarpa Species 0.000 description 1
- 235000005146 Ipomoea eriocarpa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は老朽化した高炉を能率的に解体する高炉解体方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blast furnace dismantling method for efficiently dismantling an aged blast furnace.
高炉は長期の使用によって炉材が老朽化するために、定
期的に解体、改修が行われているが、この解体、改修作
業は短時日で行って操業の効率化を図ることが要望され
ている。Blast furnaces are periodically dismantled and renovated because the furnace materials deteriorate due to long-term use, but it is desired that this dismantling and refurbishment work be carried out in a short period of time to improve operational efficiency. .
高炉の炉床及び炉壁は、焼成された耐火れんが積みを主
体とする耐火物構造からなり、その炉内には溶銑が残り
、残銑となっているために、高炉の解体、改修に先立っ
てこの残銑を冷却、固化させているが、固化した時点の
残銑は高温（約７００”ｃ ＞で、引張強度が２０００
〜３０００ｋｇ／ ｃ＋ｄ、圧縮強度はそれ以上もあり
、解体撤去するのが非常に困難である。The hearth and walls of a blast furnace are made of a refractory structure consisting mainly of fired refractory bricks, and since molten metal remains in the furnace and becomes residual pig iron, prior to dismantling or renovating the blast furnace, The residual pig iron from the lever is cooled and solidified, but at the time of solidification, the residual pig iron is at a high temperature (approximately 700"C>) and has a tensile strength of 2000
~3000kg/c+d, the compressive strength is even higher, making it extremely difficult to dismantle and remove.
このため、従来から発破を利用して残銑の解体を行って
いるが、発破孔を穿設するには、火炎ジェットランスを
使用して残銑を溶融しながら穿孔しているのが現状であ
る。For this reason, blasting has traditionally been used to dismantle the residual pig iron, but at present, blast holes are drilled while melting the residual pig iron using a flame jet lance. be.
しかしながら、ジェットランスの火炎により残銑を溶融
させると、その溶銑を排出しなければ孔を形成すること
ができないために、穿孔角度を上向きにして溶銑を自然
に流出させるようにする必要があり、発破孔の穿設形態
が限定されて残銑に対して発破に最適な角度の孔が穿設
できない場合が生じる。However, when the residual pig iron is melted by the flame of the jet lance, the hole cannot be formed unless the molten metal is discharged, so it is necessary to set the drilling angle upward to allow the molten metal to flow out naturally. There are cases where the drilling form of the blast hole is limited and it is not possible to drill a hole at an optimal angle for blasting with respect to the residual pig iron.
又、ジェットランスから噴出させる火炎は非常に危険で
作業性に問題が生じるばかりでなく、残銑を溶融させな
がら穿孔していくために、均一なな穿孔径が得られない
と共に真っ直ぐな孔を穿設することが困難であり、その
ため、発破の装填に手間を要すると共に発破効率が低下
するという問題点があった。In addition, the flame emitted from the jet lance is extremely dangerous and not only causes problems in workability, but since the hole is drilled while melting the residual pig iron, it is difficult to obtain a uniform hole diameter and it is difficult to make a straight hole. It is difficult to drill holes, and as a result, there are problems in that it takes time and effort to load blasting, and that blasting efficiency decreases.
本発明はこのような問題点を解消し、精度のよい発破孔
を穿設して効率の良い高炉の解体を可能にすることを目
的とする高炉の解体方法を提供するものである。The present invention solves these problems and provides a method for dismantling a blast furnace, which aims to drill blast holes with high accuracy and enable efficient dismantling of the blast furnace.
上記目的を達成するために、本発明の高炉の解体方法は
、高炉の側壁を形成している耐火物を撤去して高炉内底
部に堆積固結した残銑を露出させる工程と、先端に切削
ビットを有するドリル体を移動台車の俯仰アーム上に回
転並びに前後動自在に配設してなる穿孔装置を使用して
該ドリル体を回転させながら前進させることにより前記
残銑に発破孔を穿設する工程と、該発破孔に火薬を装填
して爆破させることにより残銑を破壊、解体する工程と
、高炉の底部耐火物の外周一部を撤去する工程とからな
り、上記発破孔の穿設と火薬による残銑の爆破及び底部
耐火物の撤去とを繰り返し行うことを特徴とするもので
ある。In order to achieve the above object, the blast furnace dismantling method of the present invention includes the steps of removing the refractories forming the side walls of the blast furnace to expose the residual iron deposited and solidified at the bottom of the blast furnace, and cutting the tip of the blast furnace. Drilling a blast hole in the residual pig iron by moving the drill body forward while rotating it using a drilling device comprising a drill body having a bit arranged on an elevating arm of a movable cart so as to be rotatable and movable back and forth. The drilling of the blast hole consists of a step of destroying and dismantling the residual pig iron by loading gunpowder into the blast hole and detonating it, and a step of removing a part of the outer periphery of the bottom refractory of the blast furnace. This method is characterized by repeatedly performing the following steps: blasting the residual pig iron with gunpowder, and removing the bottom refractory.
〔作 用］
高炉の側壁を形成している耐火物を適宜な手段によって
破壊、撤去して高炉内底部に堆積固結した残銑を露出さ
せたのち、先端に切削ビットを有するドリル体を移動台
車の俯仰アーム上に回転並びに前後動自在に配設してな
る穿孔装置を使用して、該ドリル体を回転させながら前
進させることにより前記残銑に発破孔を穿設するもので
あるから、安全に且つ能率良く穿孔できると共に穿設さ
れた孔は直状で且つ径が一定となり、全ての孔が均一で
精度よく穿設される。[Operation] After destroying and removing the refractories forming the side walls of the blast furnace to expose the residual iron deposited and solidified at the bottom of the blast furnace, a drill body with a cutting bit at the tip is moved. A blast hole is drilled in the residual pig iron by using a drilling device which is rotatably and movably movable back and forth on an elevating arm of a truck, and by moving the drill body forward while rotating, The holes can be drilled safely and efficiently, and the holes that are drilled are straight and have a constant diameter, and all holes are drilled uniformly and accurately.
従って、この発破孔に対する発破の装填が容易且つ確実
に行え、効率の良い残銑の解体が可能となるものである
。Therefore, the blasting can be easily and reliably loaded into the blasting hole, and the residual pig iron can be dismantled efficiently.
本発明の実施例を図面について説明すると、老朽化した
高炉（１）の解体を行うに際して、まず、炉口や炉胸、
炉腹、朝顔部等を形成している鉄皮で囲繞された耐火れ
んが構造物を公知の手段により解体、撤去すると共に高
炉の下部側壁を形成している耐火れんが構造物（１ａ）
を同様に解体、撤去して高炉内底部に堆積固結した残銑
（２）を露出させる。An embodiment of the present invention will be explained with reference to the drawings. When dismantling an aged blast furnace (1), first, the furnace mouth, furnace chest,
The refractory brick structure surrounded by the steel shell that forms the furnace belly, morning glory, etc. is dismantled and removed by known means, and the refractory brick structure that forms the lower side wall of the blast furnace (1a)
is similarly dismantled and removed to expose the residual pig iron (2) that has accumulated and solidified at the bottom of the blast furnace.
この残銑（２）は、解体に先立って適宜冷却、固化され
ている。This residual pig iron (2) is suitably cooled and solidified prior to dismantling.
次いで、この残銑（２）に発破孔（３）を穿孔装置（４
）によって穿設する。Next, a blast hole (3) is formed in this residual pig iron (2) using a drilling device (4).
).
この穿孔装置（４）は、第５図乃至第８図に示すように
、取付フレーム（５）上のガイド（６）に移動台（力を
前後移動自在に配設し、該移動台（力に先端に切削ビッ
ト（８ａ）を一体に設けたドリル体（８）を回転自在に
支持させてなるもので、このドリル体（８）は移動台（
７）上に設置した回転駆動用電動機（９）によって、該
電動機（９）の回転軸とドリル体（８）の後端とに固着
した歯付プーリ間に掛は渡しているベルトを介し回転さ
せられる。As shown in FIGS. 5 to 8, this drilling device (4) is equipped with a movable table (force is provided on a guide (6) on a mounting frame (5) so as to be movable back and forth, A drill body (8) with a cutting bit (8a) integrally provided at the tip is rotatably supported by a movable table (8a).
7) The rotary drive electric motor (9) installed above rotates the toothed pulley fixed to the rotating shaft of the electric motor (9) and the rear end of the drill body (8) via a belt that is passed between the toothed pulleys. I am made to do so.
又、ドリル体（８）は中空に形成されてその後端面から
切削ビット（８ａ）の先端部に開口する流体供給孔（１
０）を設けである。The drill body (8) is formed hollow and has a fluid supply hole (1) that opens from the rear end surface to the tip of the cutting bit (8a).
0) is provided.
さらに、移動台（７）の駆動機構は、前記取付フレーム
（５）の前後間に螺子棒（１１）を回転自在に支持し、
この螺子棒（１１）を移動台（７）に設けた螺子孔０り
に螺退して該螺子棒（１１）をフレーム（５）の後端部
上に設置した送り用電動機０３）により回転させること
により、移動台（７）を螺子捧（１１）に沿って螺進、
螺退自在にしているものであるが、移動台（７）の後退
を迅速に行わせるために、移動台（７）の中央空間部に
設けられた左右一対の掴持片０４）０４）の対向面に半
螺子孔（１２ａ）（１２ａ）を形成してこれらの半螺子
孔（１２ａ） （１２ａ）により螺子孔０２）を形成さ
せていると共にこれらの掴枠片０４） ０４）の上端部
間を枢着して開閉自在とし、移動台（７）に取付けられ
たシリンダ０５）Ｑ５）によって開閉させて前記螺子棒
（１１）に着脱自在に螺合させ、開放時に移動台（７）
の後端面に一端を連結したチェーン等の索条物θωを取
付フレーム（５）の後端適所に設けた巻取手段に巻回さ
せて移動台（７）の早戻し機構を構成しているものであ
る。Furthermore, the drive mechanism of the moving table (7) rotatably supports a screw rod (11) between the front and rear of the mounting frame (5),
This screw rod (11) is screwed back into the screw hole provided in the moving table (7), and the screw rod (11) is rotated by the feeding motor 03 installed on the rear end of the frame (5). By doing so, the moving table (7) is screwed along the screw thread (11),
Although the movable base (7) is designed to be able to be freely retracted by screws, a pair of left and right gripping pieces 04)04) provided in the central space of the movable base (7) are used to allow the movable base (7) to retreat quickly. Half-threaded holes (12a) (12a) are formed on the opposing surfaces, and these half-threaded holes (12a) (12a) form a threaded hole 02), and the upper end of these gripping frame pieces 04) 04) The space between the parts is pivoted so that it can be opened and closed freely, and it is opened and closed by a cylinder 05)Q5) attached to the moving table (7), and is removably screwed into the threaded rod (11), and when opened, the moving table (7)
A quick-return mechanism for the movable table (7) is constructed by winding a cable such as a chain θω, which has one end connected to the rear end surface, around a winding means provided at a suitable position at the rear end of the mounting frame (5). It is something.
このように構成した穿孔装置（４）は、その取付フレー
ム（５）をクローラ台車等の移動台車θ′７）の俯仰ア
ーム側上に配設、固定され、移動台車０７）を操縦して
残銑（２）の発破孔穿孔位置に移動する。The drilling device (4) configured in this way has its mounting frame (5) arranged and fixed on the elevating arm side of a movable trolley θ'7) such as a crawler trolley, and can be left behind by maneuvering the movable trolley 07). Move to the blast hole drilling position of pig (2).
その位置において残銑（２）面に向かってドリル体（８
）の先端ビット（８ａ）を近接させ、電動機（９）０３
）を駆動すると、回転駆動用電動機（９）によってドリ
ル体（８）は残銑（２）切削に適した一定の回転速度で
回転すると共に送り用電動機０３）によって螺子棒（１
１）が回転し、該螺子棒（１１）に掴持片０４）Ｑ４）
を介して螺合している移動台（７）が前進して切削ピッ
） （８ａ）を残銑（２）の切削に適した一定速度でも
って前進させ、残銑（２）に穿孔していく。At that position, the drill body (8) faces the residual pig iron (2).
) and bring the tip bit (8a) of the motor (9) 03 close together.
), the rotary drive electric motor (9) rotates the drill body (8) at a constant rotational speed suitable for cutting the residual pig iron (2), and the feed electric motor 03) rotates the screw rod (1).
1) rotates, and the gripping piece 04)Q4) is attached to the screw rod (11).
The movable table (7), which is screwed together through go.
この穿孔中に、ドリル体（８）の後端から流体供給孔０
ωに高圧空気、圧力水又は圧力油等の流体を供給すると
、切削ビット（８ａ）の先端から該流体が穿孔内に噴出
し、ドリル体（８）と穿孔壁間の空隙を通じて孔開口側
に向かって流動して切削くり粉を孔から排出する。During this drilling, the fluid supply hole 0 is inserted from the rear end of the drill body (8).
When a fluid such as high-pressure air, pressure water, or pressure oil is supplied to ω, the fluid is ejected into the hole from the tip of the cutting bit (8a) and flows toward the hole opening side through the gap between the drill body (8) and the hole wall. The cutting powder flows toward the hole and discharges it from the hole.
残銑（２）に所望深さの発破孔（３）が穿設されると、
次に、ドリル体（８）を該孔から抜き取る。When the blast hole (3) of the desired depth is drilled in the pig iron residue (2),
Next, the drill body (8) is extracted from the hole.
この場合、送り用電動機側の駆動によって螺子棒（１１
）を逆回転させることにより、移動台（７）を螺子棒（
１１）に沿って後退させてもよいが、迅速に後退させる
ために、シリンダ０５）０５）によって掴持片０４）Ｑ
４１を開放し、螺子棒（１１）に対する半螺子孔（１２
ａ） （１２ａ）の螺合を解いたのち、索条物θωを引
っ張って移動台（７）をガイド（６）に摺動させながら
後退させる。In this case, the screw rod (11
) by rotating the moving table (7) in the opposite direction, the moving table (7) is attached to the screw rod (
11), but in order to quickly retreat, the gripping piece 04)Q is moved by the cylinder 05)05).
41 and open the half screw hole (12) for the screw rod (11).
a) After unscrewing (12a), pull the cable θω and move the movable platform (7) backward while sliding it on the guide (6).
しかるのち、次の穿孔位置に回転穿孔装置を移動させて
再び前記同様にして穿孔を行うものである。Thereafter, the rotary drilling device is moved to the next drilling position and drilling is performed again in the same manner as described above.
こうして所望深さの発破孔（３）を残銑（２）の複数個
所に穿設したのち、該発破孔（３）内に火薬を装填する
。この際、発破孔（３）はドリル体（８）の切削ビット
（８ａ）によって全長に亘り一定径を有し且つ真っ直ぐ
な孔に形成されているので、火薬の装填が容易且つ正確
に行える。After blasting holes (3) of a desired depth are drilled at a plurality of locations in the residual pig iron (2) in this manner, explosives are loaded into the blasting holes (3). At this time, since the blast hole (3) is formed into a straight hole with a constant diameter over the entire length by the cutting bit (8a) of the drill body (8), the gunpowder can be loaded easily and accurately.
火薬の装填後、これを爆破させて残銑（２）の一部を解
体させる。After loading the gunpowder, it is detonated to dismantle a portion of the residual pig iron (2).
この残銑（２）の解体作業と並行して或いは引続き耐火
レンガで形成された高炉（１）の底部（ｌｂ）の一部の
撤去作業を行い、残存する残銑（２）に前記同様にして
発破孔（３）を穿設したのち、火薬による爆破を行って
残銑（２）の解体を行い、このような発破孔（３）の穿
設と火薬による残銑（２）の爆破及び底部耐火物の撤去
とを繰り返し行って高炉を解体するものテある。In parallel with or following the dismantling work of this residual pig iron (2), a part of the bottom (lb) of the blast furnace (1) made of refractory bricks is removed, and the remaining pig iron (2) is dismantled in the same manner as above. After drilling a blast hole (3) using gunpowder, the residual pig iron (2) is decomposed by blasting with gunpowder. Some blast furnaces are dismantled by repeatedly removing the bottom refractories.
以上のように本発明の高炉の解体方法によれば、高炉の
側壁を形成している耐火物を撤去して高炉内底部に堆積
固結した残銑を露出させたのち、先端に切削ビットを有
するドリル体を移動台車の俯仰アーム上に回転並びに前
後動自在に配設してなる穿孔装置を使用して、該ドリル
体を回転させながら前進させることにより前記残銑に発
破孔を穿設し、該発破孔に火薬を装填して爆破させるこ
とにより残銑を破壊、解体させるものであるから、粉塵
の多い高温の作業環境にも拘わらず、移動台車を操作し
てドリル体により安全に発破孔を穿設することができ、
しかも、移動台車の俯仰アームを作動させることによっ
て残銑に対するドリル体の穿孔方向を自由に変更させる
ことができるので、発破に最適な角度を有する孔を穿設
することができ、その上、ドリル体を回転させながら前
進させて一定径で且つ真っ直ぐな所望深さの発破孔を能
率良く穿設できるものであり、従って、穿孔時間の短縮
と共に発破孔への火薬の装填作業が円滑且つ確実に行え
、効率の良い残銑の解体が可能となるものである。As described above, according to the blast furnace dismantling method of the present invention, the refractories forming the side walls of the blast furnace are removed to expose the residual iron deposited and solidified at the bottom of the blast furnace, and then a cutting bit is inserted at the tip. A blasting hole is drilled in the residual pig iron by using a drilling device having a drill body arranged on an elevating arm of a movable cart so as to be rotatable and movable back and forth, and moving the drill body forward while rotating. , the residual pig iron is destroyed and dismantled by loading gunpowder into the blast hole and detonating it, so even in a dusty and high-temperature working environment, the drill body can be used to safely blast by operating a moving cart. holes can be drilled,
Moreover, by operating the elevating arm of the mobile cart, the drilling direction of the drill body relative to the residual pig iron can be freely changed, so it is possible to drill a hole with the optimum angle for blasting. By moving the body forward while rotating, it is possible to efficiently drill a straight blast hole of a desired depth with a constant diameter.Therefore, the drilling time is shortened and the loading of gunpowder into the blast hole is carried out smoothly and reliably. This makes it possible to dismantle residual pig iron efficiently.
図面は本発明の実施例を示すもので、第１図は残銑に穿
孔を行う状態の簡略側面図、第２図はその平面図、第３
図は穿孔装置を装着している移動台車の側面図、第４図
は高炉の簡略断面図、第５図は穿孔装置の側面図、第６
図はその平面図、第７図は縦断正面図、第８図は縦断背
面図である。
（１）・・・高炉、（２）・・・残銑、（３）・・・発
破孔、（４）・・・穿孔装置、（５）・・・取付フレー
ム、（６）・−・ガイド、（７）・・・移動台、（８）
・・・ドリル体、（８ａ）・・・切削ビット、（９）θ
■・・・電動機、（１０）・・・流体供給孔、０６）・
・・索条物。
第３図
第４図
ご ＋１）
町The drawings show an embodiment of the present invention, and FIG. 1 is a simplified side view of a state in which a hole is being drilled into residual pig iron, FIG. 2 is a plan view thereof, and FIG.
The figure is a side view of a mobile cart equipped with a perforation device, Figure 4 is a simplified sectional view of the blast furnace, Figure 5 is a side view of the perforation device, and Figure 6
The figure is a plan view, FIG. 7 is a longitudinal front view, and FIG. 8 is a longitudinal rear view. (1)... Blast furnace, (2)... Residue, (3)... Blasting hole, (4)... Drilling device, (5)... Mounting frame, (6)... Guide, (7)...Movement platform, (8)
... Drill body, (8a) ... Cutting bit, (9) θ
■...Electric motor, (10)...Fluid supply hole, 06)
... Cables. Figure 3 Figure 4 +1) Town
Claims (1)
炉内底部に堆積固結した残銑を露出させる工程と、先端
に切削ビットを有するドリル体を移動台車の俯仰アーム
上に回転並びに前後動自在に配設してなる穿孔装置を使
用して該ドリル体を回転させながら前進させることによ
り前記残銑に発破孔を穿設する工程と、該発破孔に火薬
を装填して爆破させることにより残銑を破壊、解体する
工程と、高炉の底部耐火物の外周一部を撒去する工程と
からなり、上記発破孔の穿設と火薬による残銑の爆破及
び底部耐火物の撤去とを繰り返し行うことを特徴とする
高炉の解体方法。(1) The process of removing the refractories forming the side walls of the blast furnace to expose the residual iron deposited and solidified at the bottom of the blast furnace, and moving the drill body with a cutting bit at the tip onto the elevating arm of the moving cart. Drilling a blast hole in the residual pig iron by rotating and moving the drill body forward using a drilling device that is arranged to be rotatable and movable back and forth, and loading explosives into the blast hole. The process consists of the process of destroying and dismantling the residual pig iron by blasting it, and the process of scraping off a part of the outer periphery of the bottom refractory of the blast furnace. A blast furnace dismantling method characterized by repeatedly carrying out removal and removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583588A JPH0610290B2 (en) | 1988-04-27 | 1988-04-27 | Blast furnace dismantling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583588A JPH0610290B2 (en) | 1988-04-27 | 1988-04-27 | Blast furnace dismantling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01275710A true JPH01275710A (en) | 1989-11-06 |
| JPH0610290B2 JPH0610290B2 (en) | 1994-02-09 |
Family
ID=14418095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10583588A Expired - Lifetime JPH0610290B2 (en) | 1988-04-27 | 1988-04-27 | Blast furnace dismantling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610290B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9346461B2 (en) | 2011-09-01 | 2016-05-24 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Control device for determining vehicle speed for switching from series mode to parallel mode |
-
1988
- 1988-04-27 JP JP10583588A patent/JPH0610290B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9346461B2 (en) | 2011-09-01 | 2016-05-24 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Control device for determining vehicle speed for switching from series mode to parallel mode |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0610290B2 (en) | 1994-02-09 |
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