JP2578012B2 - High-temperature slag crushing equipment - Google Patents
High-temperature slag crushing equipmentInfo
- Publication number
- JP2578012B2 JP2578012B2 JP17511290A JP17511290A JP2578012B2 JP 2578012 B2 JP2578012 B2 JP 2578012B2 JP 17511290 A JP17511290 A JP 17511290A JP 17511290 A JP17511290 A JP 17511290A JP 2578012 B2 JP2578012 B2 JP 2578012B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- temperature slag
- crusher
- small
- temperature
- 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.)
- Expired - Lifetime
Links
- 239000002893 slag Substances 0.000 title claims description 77
- 238000001816 cooling Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000008187 granular material Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 101150006573 PAN1 gene Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Glanulating (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は高温スラグを熱間状態で連続的に破砕する装
置に関するものであり、ここにいう高温スラグとは溶融
したスラグ及び地金と凝固したスラグ及び地金とが混在
するものを言う。Description: TECHNICAL FIELD The present invention relates to an apparatus for continuously crushing high-temperature slag in a hot state, and the high-temperature slag referred to herein is a molten slag and a base metal and solidified. Slag and bullion are mixed.
（従来の技術及び発明が解決しようとする課題） 従来技術として特開昭55−155183号公報「溶融スラグ
の連続処理設備」で示すように、溶融スラグを回転トラ
フに投入し、回転トラフ内に設けた複数の撹拌装置によ
って溶融スラグを冷却撹拌しながら破砕及び粒状化する
溶融さいの冷却破砕装置がある。この従来技術の課題と
しては、溶融したスラグ及び地金と凝固したスラグ及び
地金とが混在している溶融さいは溶融した地金を多く含
む大塊と溶融した地金の少ない小塊とが混在しているた
め、下記の問題点を有している。(Prior Art and Problems to be Solved by the Invention) As shown in Japanese Patent Application Laid-Open No. 55-155183, "Continuous processing equipment for molten slag", molten slag is put into a rotary trough and is placed in a rotary trough. There is a cooling and crushing apparatus for melting slag that crushes and granulates molten slag while cooling and stirring the slag with a plurality of stirring devices provided. As a problem of this prior art, the molten slag in which the molten slag and the ingot are mixed with the solidified slag and the ingot, a large lump containing a large amount of the molten ingot and a small lump having a small amount of the molten ingot are provided. Since they are mixed, they have the following problems.
（１） 破砕及び粒状化の出来る溶融さいは地金を含ま
ない溶融さいのみであって、地金を多く含む大塊高温ス
ラグを充分に破砕及び粒状化することは出来ない。(1) The only smelter that can be crushed and granulated is a smelter that does not contain ingots, and cannot sufficiently crush and granulate large ingot high-temperature slag that contains a lot of ingots.
（２） 破砕及び粒状化した後スラグの中から地金を回
収する時、スラグの多いしかも充分に破砕及び粒状化し
ていない小塊スラグが混在している状態では磁石による
地金回収の効率が著しく劣化する。(2) When recovering slag from slag after crushing and granulation, the efficiency of slag recovery by magnets is high when there is a large amount of slag and small slag that is not sufficiently crushed and granulated. It deteriorates remarkably.
上記の従来技術の問題点を解決するものとして特公昭
63−58211号公報「金属精錬時に発生するスラグ中から
地金を回収する方法及びロッドミル」で示すように、大
塊と小塊とをまとめて破砕及び粒状化し、その粒状化し
たものを大塊と小塊とに分離するためにオーバーフロー
孔と小径孔とを設け各々独立して磁選機により地金を回
収する塊スラグの破砕装置がある。この従来技術の課題
としては、前述従来技術の問題点（２）は解決されるも
のの問題点（１）は解決されていない。ロッドミルの機
構はドラムの回転によって内部のロッドにより又内容物
同士で磨砕・衝撃を加えるものである。そのために大塊
の中に大塊地金が大部分なのでこれ以上の破砕及び粒状
化は全く出来ないという根本的な問題点をも有してい
る。To solve the above problems of the prior art,
As shown in JP-A-63-58211, "Method and rod mill for recovering metal from slag generated during metal refining", large lumps and small lumps are crushed and granulated together, and the granulated There is an apparatus for crushing lump slag in which an overflow hole and a small diameter hole are provided in order to separate the slag into a small lump, and the metal is collected independently by a magnetic separator. As the problem of the conventional technology, the problem (2) of the conventional technology described above is solved, but the problem (1) is not solved. The mechanism of the rod mill is such that the rotation of the drum applies grinding / impact with the internal rod and between the contents. For this reason, there is also a fundamental problem that since the bulk metal is mostly contained in the bulk, further crushing and granulation cannot be performed at all.
（課題を解決するための手段） 本発明は従来技術の課題を有利に解決するものであっ
て、その要旨とするところは、溶融したスラグ及び地金
と凝固したスラグ及び地金とが混在した高温スラグを受
け入れて冷却凝固させて熱間状態で連続的に破砕する装
置において、大塊を斜め下方向に且つ小塊を垂直下方
向に分離すべき目開きと傾斜とを有する受け入れ部、
受け入れ部の斜め下方向に配設し大塊を押圧しつつ且つ
復動可能な復動押圧機構を有する大塊の破砕器と、受け
入れ部の垂直下方向に配設し小塊を押圧しつつ且つ復動
可能な復動押圧機構と小塊を冷却すべき冷却機構とを有
する小塊の破砕器及び大塊の破砕器と小塊の破砕器と
の下部に各々独立に設けた破砕された高温スラグの搬送
ラインとを備えたことを特徴とする高温スラグの破砕装
置にある。(Means for Solving the Problems) The present invention advantageously solves the problems of the prior art, and the gist of the present invention is that mixed slag and ingot and solidified slag and ingot are mixed. In a device that receives high-temperature slag, cools and solidifies, and continuously crushes in a hot state, a receiving portion having an opening and a slope to separate large lumps diagonally downward and small lumps vertically downward,
A large crusher having a reversing pressing mechanism that is arranged diagonally below the receiving portion and presses the large lumps and is capable of moving back, and is disposed vertically below the receiving portion and presses the small lumps. The crusher is provided independently at the lower part of the small crusher and the large crusher and the small crusher each having a reversible pressing mechanism and a cooling mechanism for cooling the small lumps. A high-temperature slag crushing apparatus comprising a high-temperature slag transfer line.
以下、本発明を図面に基づいて説明する。第１図は本
発明に係わる実施例を示す概要図である。１は受さい鍋
であって、溶融した地金とスラグとが混在した高温スラ
グを熱間状態で受ける受け皿である。２は受さい鍋１転
倒用クレーンである。転倒用クレーン２は必ずしも必要
なものではなく、受さい鍋１を転倒する機構であれば何
でもよい。３は大塊高温スラグを斜め下方向に且つ小塊
高温スラグを垂直下方向に分離すべき目開きと傾斜とを
有する高温スラグの受入れ部である。４は高温スラグの
受入れ部３の斜め下方向に配設し大塊高温スラグを押圧
しつつ且つ復動可能な復動押圧機構を有する大塊高温ス
ラグの破砕器である。５は高温スラグの受入れ部３の垂
直下方向に配設し小塊高温スラグを押圧しつつ且つ復動
可能な復動押圧機構と小塊高温スラグを冷却すべき冷却
機構とを有する小塊高温スラグの破砕器である。6,7は
大塊高温スラグの破砕器４と小塊高温スラグの破砕器５
との下部に各々独立に設けた破砕された高温スラグの搬
送ラインである。なお８は大塊高温スラグが高温スラグ
の受入れ部３内に滞留した場合、大塊高温スラグを破砕
器４に運搬するためのクレーンである。クレーン８は通
常あまり用いないものである。Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an embodiment according to the present invention. Reference numeral 1 denotes a receiving pan, which receives hot slag mixed with molten metal and slag in a hot state. 2 is a receiving pan 1 crane for overturning. The overturning crane 2 is not always necessary, and any mechanism may be used as long as the mechanism can overturn the receiving pan 1. Reference numeral 3 denotes a high-temperature slag receiving portion having an opening and an inclination for separating large-sized high-temperature slag obliquely downward and small-sized high-temperature slag vertically downward. Reference numeral 4 denotes a large mass high temperature slag crusher which is disposed obliquely downward of the high temperature slag receiving portion 3 and has a reversing pressing mechanism capable of pressing the large mass high temperature slag and returning. Reference numeral 5 denotes a small-sized high-temperature device which is disposed vertically below the high-temperature slag receiving portion 3 and has a reversing pressing mechanism capable of pressing the small-sized high-temperature slag and moving backward and a cooling mechanism for cooling the small-sized high-temperature slag. It is a slag crusher. 6 and 7 are crushers 4 for large high-temperature slag and 5 crushers for small high-temperature slag
And a conveying line for crushed high-temperature slag, which is provided independently below each other. Reference numeral 8 denotes a crane for transporting the large mass high-temperature slag to the crusher 4 when the large mass high-temperature slag stays in the high-temperature slag receiving portion 3. The crane 8 is not usually used very often.
第２図は本発明に係わる高温スラグの受入れ部３の詳
細図である。31はグリズリーといって目開きが、望まし
くは幅500〜700mm程度、幅に対して垂直方向1000mm程度
のメッシュをもったものである。目開き500〜700mm程度
が望ましい理由は、高温スラグ流入時に格子内に流れが
収まるようにするためである。目開きを700mmより大き
くすると、地金、大塊が多量にバー下を通過し、冷却破
砕器の負荷増となって、破砕効率が低下し、目開きを50
0mmより狭くすると、バー上のオーバーサイズのものが
多量に発生し、大塊破砕器の負荷増となる。これらのメ
ッシュを介して、大塊高温スラグは斜め下方向に移動
し、小塊高温スラグは垂直下方向に落下する。なお32,3
3はグリズリー31の下部、上部をそれぞれ支持する支持
具である。支持具32は軸を介して回転出来るようにし、
支持具33は高さが調節出来るようにするとグリズリー31
の角度調節が任意に可能である。この角度は30〜50度が
望ましい。角度が30度未満であると、特に大塊高温スラ
グはグリズリー31上に滞留し破砕器４迄円滑に運搬する
ことができない。他方、角度が50度を越えると大塊高温
スラグの移動が速く、大塊高温スラグと小塊高温スラグ
とを完全に分離することができない。そのためにグリズ
リー31の角度は30〜50度が望ましい。さらに上記目開き
の大きさについては大塊と小塊との大きさによって様々
な大きさに変えてよい。FIG. 2 is a detailed view of the high temperature slag receiving portion 3 according to the present invention. Reference numeral 31 denotes a grizzly which has a mesh, preferably having a width of about 500 to 700 mm and a vertical direction of about 1000 mm. The reason why the opening is about 500 to 700 mm is desirable so that the flow can be accommodated in the lattice when the high-temperature slag flows. If the opening is larger than 700 mm, a large amount of metal and large blocks pass under the bar, increasing the load of the cooling crusher, reducing the crushing efficiency and reducing the opening to 50 mm.
If it is smaller than 0 mm, a large amount of oversized bar will be generated and the load of the large crusher will increase. Through these meshes, the large mass hot slag moves obliquely downward and the small mass hot slag falls vertically downward. 32,3
Reference numeral 3 denotes a support for supporting the lower part and the upper part of the grizzly 31 respectively. The support 32 can be rotated through a shaft,
The support 33 can be adjusted in height and the grizzly 31
Can be arbitrarily adjusted. This angle is preferably 30 to 50 degrees. If the angle is less than 30 degrees, especially the large mass hot slag stays on the grizzly 31 and cannot be transported to the crusher 4 smoothly. On the other hand, if the angle exceeds 50 degrees, the movement of the large mass high-temperature slag is fast, and the large mass high-temperature slag and the small mass high-temperature slag cannot be completely separated. Therefore, the angle of the grizzly 31 is desirably 30 to 50 degrees. Further, the size of the openings may be changed to various sizes depending on the size of the large lumps and the small lumps.
第３図は本発明に係わる大塊高温スラグの破砕器４の
詳細図である。41は油圧等により矢印方向に往復運動可
能なプッシャーである。42は固定配置された側壁であ
る。43はプッシャー41に対向した固定配置された押圧対
向壁である。なおプッシャー41は溶融した地金を多く含
む大塊高温スラグを破砕及び粒状化するため鋼製等固い
材質のものがよく、しかも単位面積当たり数ton〜数百t
on/m2の押圧に耐えられるものがよい。44は側壁42と押
圧対向壁43とに固定配置されている格子の目開きを有す
る格子底板である。この格子の目開きは、後工程のクラ
ッシング、除鉄が容易である粒度のスラグが得られるよ
うに、好ましくは400mm以下とする。格子底板44を介し
て、大塊高温スラグの破砕及び粒状化したものが高温ス
ラグ搬送ライン６に送り込まれる。FIG. 3 is a detailed view of the crusher 4 for a large-sized high-temperature slag according to the present invention. 41 is a pusher which can reciprocate in the direction of the arrow by hydraulic pressure or the like. 42 is a fixedly arranged side wall. Reference numeral 43 denotes a pressingly opposed wall that is fixedly arranged and faces the pusher 41. The pusher 41 is preferably made of a hard material such as steel in order to crush and granulate a large mass of high-temperature slag containing a lot of molten metal, and moreover, several tons to several hundred t per unit area.
A material that can withstand a pressure of on / m 2 is preferable. Reference numeral 44 denotes a grid bottom plate having a grid opening fixedly arranged on the side wall 42 and the pressing opposing wall 43. The opening of the lattice is preferably 400 mm or less so that slag having a particle size that facilitates crushing and iron removal in the subsequent steps can be obtained. The crushed and granulated large mass high-temperature slag is sent to the high-temperature slag transport line 6 via the lattice bottom plate 44.
第４図（ａ）は本発明に係わる小塊高温スラグの冷却
破砕器５の詳細図である。51は油圧等により矢印方向に
往復運動可能なプッシャー、52は固定配置された側壁で
ある。なおプッシャー51は溶融した地金を多く含む小塊
高温スラグを破砕及び粒状化するため鋼製等固い材質の
ものがよく、しかも単位面積当たり数ton〜数百ton/m2
の押圧に耐えられるものがよい。53は側壁52とプッシャ
ー51とで構成される破砕器本体の底部であり、高温スラ
グを破砕及び粒状化した後開放移動状態にせしめて高温
スラグの破砕及び粒状化したものを高温スラグ搬送ライ
ン７に送り込むようになっている。底部53の勾配は１〜
３度がよい。この勾配は器内に水分が残らないように器
外への水切りを行う目的で付けられているもので、３度
よりも大きいと高温スラグの流入時に片寄って流れるの
で、層厚が不均一になり易く、また可動面及び装置構造
が複雑化する。この冷却破砕器は高温スラグを層厚200
〜600mmで受入れる程度の大きさとするのが好ましい。
処理量にもよるが層厚が200mm未満となるような寸法で
は破砕器の受け入れ面積が大きく、また層厚の薄い場合
の水冷では発泡部が多く発生し、路盤用高炉スラグ砕石
の品質を満足せず、他方、600mmを越えるような層厚で
は冷却時間が長くなると共に、破砕に大きな力を必要と
する。高温スラグを破砕及び粒状化する際に、冷却水で
高温スラグを約800℃まで冷却した方が破砕及び粒状化
効率がよい。800℃を越えるスラグ温度ではスラグが塑
性変形し、破砕が困難である。なお第４図（ｂ）は側壁
52内に冷却孔54を設けた状態を示すものである。FIG. 4 (a) is a detailed view of the cooling crusher 5 for the small high-temperature slag according to the present invention. 51 is a pusher which can reciprocate in the direction of the arrow by hydraulic pressure or the like, and 52 is a fixedly arranged side wall. The pusher 51 is preferably made of a hard material such as steel in order to crush and granulate small ingot high-temperature slag containing a large amount of molten metal, and several tons to several hundred tons / m 2 per unit area.
What can withstand pressing is good. Reference numeral 53 denotes a bottom of the crusher main body composed of a side wall 52 and a pusher 51. The crushed and granulated high-temperature slag is brought into an open state after crushing and granulating the high-temperature slag. To be sent to. The slope of the bottom 53 is 1
Three degrees is good. This gradient is provided for the purpose of draining water outside the vessel so that no water remains in the vessel. If it is larger than 3 degrees, it flows unevenly when hot slag flows in, so the layer thickness becomes uneven. The movable surface and the device structure are complicated. This cooling crusher converts hot slag to a layer thickness of 200
It is preferable that the size is about 600 mm, which is acceptable.
If the layer thickness is less than 200 mm, the area for receiving the crusher is large, and if the layer thickness is small, water-cooling when the layer thickness is less than 200 mm generates a lot of foaming parts, which satisfies the quality of blast furnace slag crushed stone for roadbed. On the other hand, if the thickness exceeds 600 mm, the cooling time becomes longer and a large force is required for crushing. When crushing and granulating the high-temperature slag, cooling and cooling the high-temperature slag to about 800 ° C. with cooling water provides better crushing and granulation efficiency. At a slag temperature exceeding 800 ° C, the slag is plastically deformed and crushing is difficult. FIG. 4 (b) shows the side wall.
This shows a state in which a cooling hole 54 is provided inside 52.
（発明の効果） 本発明によって従来技術が有する欠点を有利に解決す
ることが可能となる。具体的には本発明装置により大塊
高温スラグと小塊高温スラグとを破砕する前に同一場所
で効率良く分離し、各々を独立に破砕及び粒状化するこ
とによって高温スラグの細粒化が著しく改善される。(Effects of the Invention) According to the present invention, it is possible to advantageously solve the disadvantages of the prior art. Specifically, the large-sized high-temperature slag and the small-sized high-temperature slag are efficiently separated at the same place before being crushed by the apparatus of the present invention, and each of them is independently crushed and granulated, whereby refining of the high-temperature slag is remarkable. Be improved.
第１図は本発明による実施例を示す概要図、第２図は本
発明による高温スラグの受入れ部３の詳細図、第３図は
本発明による大塊高温スラグの破砕器４の詳細図、第４
図（ａ）、（ｂ）は本発明による小塊高温スラグの破砕
器５の詳細図である。FIG. 1 is a schematic view showing an embodiment according to the present invention, FIG. 2 is a detailed view of a receiving portion 3 for high-temperature slag according to the present invention, FIG. 4th
Figures (a) and (b) are detailed views of a crusher 5 for small high-temperature slag according to the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 笹野 弘志 千葉県君津市君津１番地 株式會社鐵原 君津支店内 (72)発明者 高砂 雄一 東京都千代田区富士見１丁目４番４号 株式會社鐵原内 (56)参考文献 特開 昭57−179587（ＪＰ，Ａ) 特開 昭55−155183（ＪＰ，Ａ) 特公 昭51−11006（ＪＰ，Ｂ１) 特公 昭63−58211（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Sasano 1 Kimitsu, Kimitsu City, Chiba Prefecture Inside the Tehara Hara Kimitsu Branch (72) Inventor Yuichi Takasago 1-4-4 Fujimi 1-chome Fujimi Chiyoda-ku Tokyo (56) References JP-A-57-179587 (JP, A) JP-A-55-155183 (JP, A) JP-B-51-11006 (JP, B1) JP-B-63-58211 (JP, B2)
Claims (1)
装置において 大塊を斜め下方向に且つ小塊を垂直下方向に分離すべ
き目開きと傾斜とを有する受け入れ部、 受け入れ部の斜め下方向に配設し大塊を押圧しつつ且
つ復動可能な復動押圧機構を有する大塊の破砕器と、受
け入れ部の垂直下方向に配設し小塊を押圧しつつ且つ復
動可能な復動押圧機構と小塊を冷却すべき冷却機構とを
有する小塊の破砕器及び 大塊の破砕器と小塊の破砕器との下部に各々独立に設
けた破砕された高温スラグの搬送ライン、 を備えたことを特徴とする高温スラグの破砕装置。An apparatus for continuously crushing high-temperature slag in a hot state, comprising: a receiving portion having an opening and a slope for separating large lumps diagonally downward and small lumps vertically downward; A large lump crusher having a reversing pressing mechanism that is disposed diagonally downward and presses the lump and is capable of moving backwards, and is disposed vertically below the receiving portion and presses the lump and moves backwards A crusher for small lumps having a possible backward movement pressing mechanism and a cooling mechanism for cooling small lumps, and a crusher for crushed high-temperature slag provided separately below the crusher for large lumps and the crusher for small lumps, respectively. A crushing apparatus for high-temperature slag, comprising: a conveying line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17511290A JP2578012B2 (en) | 1990-07-02 | 1990-07-02 | High-temperature slag crushing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17511290A JP2578012B2 (en) | 1990-07-02 | 1990-07-02 | High-temperature slag crushing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0463211A JPH0463211A (en) | 1992-02-28 |
| JP2578012B2 true JP2578012B2 (en) | 1997-02-05 |
Family
ID=15990482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17511290A Expired - Lifetime JP2578012B2 (en) | 1990-07-02 | 1990-07-02 | High-temperature slag crushing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578012B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755192A (en) * | 2016-04-29 | 2016-07-13 | 河北钢铁股份有限公司承德分公司 | Efficient raking method for medium and large blast furnaces and iron notch oxygen gun for furnace raking |
-
1990
- 1990-07-02 JP JP17511290A patent/JP2578012B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0463211A (en) | 1992-02-28 |
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