JPH0247436Y2 - - Google Patents
Info
- Publication number
- JPH0247436Y2 JPH0247436Y2 JP1986099968U JP9996886U JPH0247436Y2 JP H0247436 Y2 JPH0247436 Y2 JP H0247436Y2 JP 1986099968 U JP1986099968 U JP 1986099968U JP 9996886 U JP9996886 U JP 9996886U JP H0247436 Y2 JPH0247436 Y2 JP H0247436Y2
- Authority
- JP
- Japan
- Prior art keywords
- tuyere
- bricks
- brick
- stamp material
- refractory
- 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
Links
- 239000011449 brick Substances 0.000 claims description 91
- 239000000463 material Substances 0.000 claims description 42
- 238000007664 blowing Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000010953 base metal Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012768 molten material 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、底吹き精錬用電気炉における、炉底
部から各種ガスを吹込む羽口の周囲の構造に関
し、より詳細には炉底の主構成耐火物としてスタ
ンプ材を採用した羽口廻りの構造に関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to the structure around the tuyere for blowing various gases from the bottom of the furnace in a bottom-blown electric furnace for refining. This article relates to the structure around the tuyeres that uses stamped material as the constituent refractory material.
現在、電気炉炉床用耐火物は、作業環境の改善
及び工期の短縮を図るために、ドライスタンプ材
が主流となつている。
Currently, dry stamp materials are the mainstream refractories for electric furnace hearths in order to improve the working environment and shorten the construction period.
而して、底吹き精錬用電気炉において炉床をド
ライスタンプ材とし、この部位に吹込羽口を設置
して操業する場合には、羽口及び羽口周囲の損傷
がスタンプ材の損傷に先行するようになることが
考えられる。 Therefore, when operating a bottom-blown electric furnace for refining using dry stamp material as the hearth and installing a blowing tuyere in this area, damage to the tuyere and the area around the tuyere may precede damage to the stamp material. It is conceivable that this will become the case.
即ち、電気炉の炉底に設置する底吹き用羽口れ
んがは、その損傷速度が極めて小さい最高級耐火
物を使用することが好ましいが、該最高級耐火物
を使用しかつ条件に惠まれた場合であつてもその
損傷速度は平均0.2〜0.5mm／heatにも及ぶ。 In other words, it is preferable to use the highest grade refractories, which have an extremely low damage rate, for the bottom-blown tuyere bricks installed at the bottom of the electric furnace. Even in cases where damage occurs, the damage rate reaches an average of 0.2 to 0.5 mm/heat.
一方、主にMgO質のスタンプ材で構成された
一般の炉床は、通常１〜２年（10〜20heat／day
の場合）の寿命を有している。そして、該炉底
は、付着するスラグ、地金等により保護されるよ
うになり、厚さは使用開始後１〜２年しても殆ど
減少することがない。従つて炉底スタンプ材の交
換は亀裂等から地金、スラグ等が侵入して危険な
状態となつたときにのみ行われる。 On the other hand, general hearths mainly made of MgO stamp material usually last for 1 to 2 years (10 to 20 heat/day).
). The bottom of the furnace is protected by the attached slag, base metal, etc., and its thickness hardly decreases even after 1 to 2 years from the start of use. Therefore, the hearth stamp material is replaced only when metal, slag, etc. enter through cracks or the like and become dangerous.
羽口はその温度変化が激しいこともあり、スラ
グや地金が付着せず、前述の如く0.2〜0.5mm／
heatあるいはそれ以上の速さで損傷する。従つて
500heat使用すると100〜250mmあるいはそれ以上
損傷し、これによりその周囲のスタンプ材も影響
を受けて損傷が大きくなり、通常１〜２年使用で
きるスタンプ材の寿命が著しく減少する。
Due to the rapid temperature changes in the tuyere, slag and metal do not adhere to the tuyere, and as mentioned above, the tuyere is 0.2~0.5mm/
Damaged by heat or faster. Accordingly
If 500 heat is used, the stamp material will be damaged by 100-250 mm or more, and the surrounding stamp material will also be affected and the damage will be greater, significantly reducing the life of the stamp material, which can normally be used for 1 to 2 years.
また、底吹き精錬炉以外でのスタンプ施工の場
合、初期強度が比較的弱くても一体構造であるた
め特に問題は生じない。しかし底吹き精錬炉で
は、その吹込み羽口が成型品であることから、該
成型羽口とスタンプ材が容易に馴染まず、強度が
不十分で構造上の弱点となることがある。 Furthermore, in the case of stamping in a method other than a bottom-blown smelting furnace, even if the initial strength is relatively low, no particular problem arises because the stamping is an integral structure. However, in a bottom-blown smelting furnace, since the blowing tuyere is a molded product, the molded tuyere and the stamp material do not easily fit together, resulting in insufficient strength and a structural weakness.
更にこの羽口とスタンプ材の接合部は、吹錬の
影響を受けやすく損傷が助長され、かつ吹錬羽口
自身も他の部位と比較して損傷速度が大きく、早
期に凹状を呈するおそれが考えられる。 Furthermore, the joint between the tuyere and the stamp material is easily affected by blowing, and damage is accelerated, and the blowing tuyere itself is damaged at a higher rate than other parts, and there is a risk that it will develop a concave shape at an early stage. Conceivable.
本考案は、スタンプ材、主としてドライスタン
プ材から成る炉底に１又は２以上の底吹き用羽口
れんがを設けた電気炉において、少なくとも前記
スタンプ材と前記羽口れんがとの間に耐火れんが
を介設することにより、スタンプ材を吹錬による
損傷を受けやすい羽口れんがの部分から遠ざけ
て、炉底の羽口とその周囲の寿命を延ばすように
したものである。
The present invention provides an electric furnace in which one or more bottom-blowing tuyere bricks are provided in a hearth bottom made of a stamp material, mainly a dry stamp material, and a refractory brick is provided between at least the stamp material and the tuyere bricks. By interposing the stamp material, the stamp material is kept away from the part of the tuyere brick that is easily damaged by blowing, thereby extending the life of the tuyere and its surroundings at the hearth bottom.
本考案において、スタンプ材は、耐火れんがよ
り耐火性にやや劣るが、容易に成型等することの
できる材質から成り、羽口れんがよりある距離以
上離れた炉底の厚さ方向の少なくとも中央部を該
スタンプ材で構成する。 In the present invention, the stamp material is made of a material that has slightly lower fire resistance than refractory bricks, but can be easily molded. It is made of the stamp material.
また、本考案で、羽口れんがは、それを通して
撹拌用ガスを炉体内に吹込むための円柱状、角柱
状等の形状を有しており、炉底の、該羽口れんが
と対をなす形状の孔に嵌合されている。該羽口れ
んがは、特にその稼動面（上側）は炉体内の溶融
物の影響を直接受けるため、電融MgOを含む
MgO−Ｃれんが等の高級耐火物が使用される。
該羽口れんがには、撹拌用ガスを炉体内に吹込む
ための所要数の孔（ガス吐出通路）が形成されて
おり、該孔はステンレス等の耐蝕性パイプを内側
に装着しても、あるいは羽口れんが自身が内壁面
を構成する所謂ハダカ孔であつてもよい。 Further, in the present invention, the tuyere brick has a shape such as a cylinder or a prism for blowing stirring gas into the furnace body through it, and It is fitted into the hole. The tuyere bricks contain molten MgO, especially the working surface (upper side), which is directly affected by the molten material in the furnace body.
High grade refractories such as MgO-C bricks are used.
The required number of holes (gas discharge passages) for blowing stirring gas into the furnace body are formed in the tuyere bricks. The mouth brick itself may be a so-called naked hole that constitutes the inner wall surface.
本考案に使用する羽口周囲耐火れんがは、前記
羽口れんがほどの耐火性を有するものでなくとも
よいが、少なくとも前記スタンプ材より耐火性が
良好であるものでなければならない。該耐火れん
がは少なくとも前記羽口れんがの周囲を囲んで前
記スタンプ材がある距離をおいて羽口れんがに位
置するようにし、羽口れんが１個当り横断面積が
好ましくは0.4m2〜1.2m2となるように前記スタン
プ材と羽口れんがとの間に配設する。該耐火れん
がは一体成型してもよいが、組立に必要とされる
寸法精度が厳しくなると共に、組立作業も複雑に
なるので、垂直方向に複数に分割して、これを組
み合せることにより所定形状とすることが好まし
い。また該耐火れんがは羽口れんがの周囲だけで
なく炉底の上面及び下面に積層してもよく、特に
炉体内の影響を直接受ける上面（稼動面）側に前
記羽口れんがを中心に積層して羽口れんがに近い
部分のドライスタンプ材をより完全に保護するよ
うにしてもよい。 The refractory bricks around the tuyere used in the present invention do not have to have as much fire resistance as the tuyere bricks, but they must at least have better fire resistance than the stamp material. The refractory bricks surround at least the tuyere bricks so that the stamp material is positioned at a certain distance from the tuyere bricks, and each tuyere brick preferably has a cross-sectional area of 0.4 m 2 to 1.2 m 2 . It is arranged between the stamp material and the tuyere brick so that The refractory bricks may be molded in one piece, but the dimensional accuracy required for assembly becomes stricter and the assembly work becomes more complicated. Therefore, it is necessary to divide the refractory bricks into multiple pieces vertically and combine them to form a predetermined shape. It is preferable that In addition, the refractory bricks may be laminated not only around the tuyere bricks, but also on the upper and lower surfaces of the furnace bottom. In particular, the refractory bricks may be laminated around the tuyere bricks on the upper surface (operating surface) side, which is directly affected by the inside of the furnace body. The dry stamp material in the vicinity of the tuyere bricks may be more completely protected.
以下添付図面を参照しながら実施例により本考
案をより詳細に説明するが、本考案はこれらの実
施例に限定されるものではない。
Hereinafter, the present invention will be explained in more detail by way of examples with reference to the accompanying drawings, but the present invention is not limited to these examples.
第１図は、本考案に係わる電気炉底吹き羽口廻
りの構造の第１実施例を示す縦断面図、第２図
は、同じく部分平面図、第３図は第１図の要部拡
大図である。 Fig. 1 is a longitudinal sectional view showing a first embodiment of the structure around the bottom blowing tuyere of an electric furnace according to the present invention, Fig. 2 is a partial plan view of the same, and Fig. 3 is an enlarged view of the main part of Fig. 1. It is a diagram.
電気炉本体１の炉底には、MgO−Ｃ質耐火物
等の比較的高級な耐火物から成り、下向きに広が
る緩やかなテーパー面が形成された３個の截頭円
錐状の羽口れんが２が、それぞれがほぼ正三角形
の頂点に位置するように配置され、該羽口れんが
２には縦方向に貫通する複数本のガス吐出通路３
が形成されている。該羽口れんが２の周囲は種々
の形状の耐火れんがを介してドライスタンプ材９
が配設され、前記羽口れんが２、耐火れんが及び
ドライスタンプ材９により電気炉の炉底部が形成
されている。羽口れんが２に直接接触する上下の
耐火れんが４，４′は垂直方向に分割してあり、
これを組み合せることにより外面が正八角形であ
る筒状に構築されている。該耐火れんが４の材質
は、羽口れんが２に近く吹錬ガスの影響を受けや
すいので羽口れんがとほぼ同一又は若干低品質の
高級耐火物を使用することが好ましい。 At the bottom of the electric furnace body 1, there are three tuyere bricks 2 in the shape of a truncated cone, which are made of a relatively high-grade refractory such as MgO-C refractory and have a gently tapered surface that spreads downward. are arranged so as to be located at the vertices of an approximately equilateral triangle, and the tuyere brick 2 has a plurality of gas discharge passages 3 that penetrate in the vertical direction.
is formed. Dry stamp material 9 is applied around the tuyere bricks 2 through refractory bricks of various shapes.
The tuyere bricks 2, the refractory bricks, and the dry stamp material 9 form the bottom of the electric furnace. The upper and lower refractory bricks 4 and 4', which are in direct contact with the tuyere brick 2, are divided vertically.
By combining these, it is constructed into a cylindrical shape with a regular octagonal outer surface. As the material of the refractory bricks 4 is similar to the tuyere bricks 2 and easily affected by blowing gas, it is preferable to use a high-grade refractory of substantially the same quality as the tuyere bricks or of slightly lower quality.
該３個の耐火れんが４の上部に周縁には、炉底
を構成するドライスタンプ材９を被覆し、該耐火
れんが４の間及びその周囲の部分における炉底の
稼動面（上面）を構成するように多数の耐火れん
が５が配設されている（なお、第２図では隣り合
う耐火れんが５の境界面は省略してある）。上方
の耐火れんが４の下部周縁及び下方の耐火れんが
４′の周縁にはほぼ同質の上下２個の耐火れんが
５′が配設されている。羽口れんが２と耐火れん
が４′の整合する下面には並形の炉底れんが６が
配設されている。この耐火れんが６上には耐火充
填材あるいは通常の炉底れんが７が積層され、か
つ上下の耐火れんが５，５′の周囲の炉底れんが
７上には各種形成のれんが８が積層されている。 The upper and peripheral edges of the three refractory bricks 4 are coated with a dry stamp material 9 that constitutes the hearth bottom, and constitutes the operating surface (upper surface) of the hearth bottom between and around the refractory bricks 4. A large number of refractory bricks 5 are arranged (in FIG. 2, the boundary surfaces between adjacent refractory bricks 5 are omitted). Two upper and lower refractory bricks 5' of substantially the same quality are disposed at the lower peripheral edge of the upper refractory brick 4 and at the peripheral edge of the lower refractory brick 4'. A regular-sized hearth bottom brick 6 is arranged on the matching lower surface of the tuyere brick 2 and the refractory brick 4'. A refractory filler or ordinary hearth bricks 7 are laminated on the refractory bricks 6, and bricks 8 of various shapes are laminated on the hearth bricks 7 around the upper and lower refractory bricks 5, 5'. .
耐火れんが５とれんが８の間及び耐火れんが５
の周囲には、ドライスタンプ材９が充填され、該
ドライスタンプ材９は主として耐火れんが４によ
り羽口れんが２から分離されている。 Between refractory brick 5 and brick 8 and refractory brick 5
A dry stamping material 9 is filled around the tuyere brick 2, and the dry stamping material 9 is mainly separated from the tuyere brick 2 by the refractory brick 4.
また本実施例では、羽口れんが２の下面に把部
１０を設けてあり、把部１０を握つて羽口れんが
２全体を下方から該羽口れんが２の装着用の開口
に挿脱できるようにしてある。符号１１は前記ガ
ス吐出通路３に連通した導管であつて、吹錬用ガ
スを該導管１１及び通路３を通して電気炉本体１
内に吐出可能としてある。 Further, in this embodiment, a grip part 10 is provided on the lower surface of the tuyere brick 2, and by grasping the grip part 10, the entire tuyere brick 2 can be inserted and removed from below into the opening for installing the tuyere brick 2. It is set as. Reference numeral 11 denotes a conduit communicating with the gas discharge passage 3, and the blowing gas is passed through the conduit 11 and the passage 3 to the electric furnace main body 1.
It can be discharged inside.
第４図は、本考案に係わる電気炉底吹き羽口廻
りの構造の第２実施例を示す縦断面図、第５図
は、同じく部分平面図である。本実施例は、前記
第１実施例の改良に係わるものであり、第１実施
例と同一の部材には同一の符号を付してある。 FIG. 4 is a longitudinal sectional view showing a second embodiment of the structure around the bottom blowing tuyere of an electric furnace according to the present invention, and FIG. 5 is a partial plan view thereof. This embodiment is an improvement of the first embodiment, and the same members as in the first embodiment are given the same reference numerals.
第４，５図において、３個の羽口れんが２の周
囲には、それぞれ外面が八角形である筒状の耐火
れんが４が装着され、該耐火れんが４の上部の周
縁には断面形が長方形である計16個の耐火れんが
５″が装着され、更にその外側には３個の羽口れ
んが２をそれぞれ区分するようにドライスタンプ
材９が充填されている。 In FIGS. 4 and 5, cylindrical refractory bricks 4 each having an octagonal outer surface are installed around the three tuyere bricks 2, and a rectangular cross-sectional shape is attached to the upper periphery of the refractory bricks 4. A total of 16 refractory bricks 5'' are installed, and dry stamping material 9 is filled on the outside so as to separate each of the three tuyere bricks 2.
第６図は本考案の更に異なる実施例に係る羽口
廻りの構造を示す部分平面図である。本実施例で
は、耐火れんが４の周囲を８個の台形柱状の耐火
れんが１２が取り巻いており、その外周側にドラ
イスタンプ材９が装填されている。 FIG. 6 is a partial plan view showing the structure around the tuyere according to still another embodiment of the present invention. In this embodiment, eight trapezoidal pillar-shaped refractory bricks 12 surround the refractory brick 4, and a dry stamp material 9 is loaded on the outer peripheral side thereof.
以上の通り、本考案は、電気炉の炉底の築炉材
料の一部にスタンプ材を採用すると共に、スタン
プ材と羽口れんがとの間に耐火れんがを介設した
ものである。そのため、スタンプ材が損傷を受け
やすい羽口れんがの周囲から遠ざかつており、該
スタンプ材を長寿命化できる。また、スタンプ材
の採用により、築炉工期の短縮化の可能である。
As described above, the present invention employs stamp material as part of the furnace construction material at the bottom of the electric furnace, and also interposes refractory bricks between the stamp material and the tuyere bricks. Therefore, the stamp material is kept away from the periphery of the tuyere brick, which is susceptible to damage, and the life of the stamp material can be extended. In addition, by using stamp material, it is possible to shorten the furnace construction period.
なお、本考案では、羽口れんがに下向きに広が
るテーパー部を設けることにより、電気炉の外部
側からの羽口れんがの差替補修を可能とし、差替
補修の所要時間を短縮して作業性を大きく向上さ
せるようにすることもできる。 In addition, in this invention, by providing the tuyere brick with a tapered part that spreads downward, it is possible to replace and repair the tuyere brick from the outside of the electric furnace, reducing the time required for replacement and repair and improving work efficiency. It is also possible to significantly improve the
第１図は、本考案に係わる電気炉底吹き羽口廻
りの構造の第１実施例を示す縦断面図、第２図
は、同じく部分平面図、第３図は、第１図の要部
拡大図、第４図は、本考案に係わる電気炉底吹き
羽口廻りの構造の第２実施例を示す縦断面図、第
５図は、同じく部分平面図である。第６図は、更
に異なる実施例を示す部分平面図である。
１……電気炉本体、２……羽口れんが、３……
ガス吐出通路、４，４′，５，５′……耐火れん
が、６……炉底れんが、９……ドライスタンプ
材、１０……把部、１１……導管。
FIG. 1 is a longitudinal sectional view showing a first embodiment of the structure around the bottom blowing tuyere of an electric furnace according to the present invention, FIG. 2 is a partial plan view of the same, and FIG. 3 is the main part of FIG. 1. An enlarged view, FIG. 4 is a longitudinal sectional view showing a second embodiment of the structure around the bottom blowing tuyere of an electric furnace according to the present invention, and FIG. 5 is a partial plan view thereof. FIG. 6 is a partial plan view showing a further different embodiment. 1... Electric furnace main body, 2... Tuyere brick, 3...
Gas discharge passage, 4, 4', 5, 5'... refractory brick, 6... furnace bottom brick, 9... dry stamp material, 10... grip, 11... conduit.
Claims (1)
以上の底吹き羽口れんがを設けた電気炉であつ
て、少なくとも前記スタンプ材と前記羽口れん
がとの間に耐火れんがを介設したことを特徴と
する電気炉底吹き羽口廻りの構造。 (2) 羽口れんがを複数個とし、該複数の羽口れん
が間及びその周囲に耐火れんがを充填し、その
周囲にスタンプ材を設けた実用新案登録請求の
範囲第１項に記載の羽口廻りの構造。 (3) 羽口れんがを複数とし、各羽口れんがを耐火
れんがで包囲し、該包囲した羽口れんが間にド
ライスタンプ材を充填して、各羽口れんがを区
画するようにした実用新案登録請求の範囲第１
項に記載の羽口廻りの構造。 (4) 羽口れんがの側面を、下方側に向つて末広が
りとなるテーパー形状に形成した実用新案登録
請求の範囲第１項から第３項のいずれか１項に
記載の羽口廻りの構造。 (5) 前記耐火れんがの品質を羽口れんがとドライ
スタンプ材の中間の品質とした実用新案登録請
求の範囲第１項から第４項のいずれか１項に記
載の羽口廻りの構造。 (6) 前記耐火れんがを、羽口の周囲に、該羽口１
個当りその横方向の断面積が0.4m2〜1.2m2とな
るように配設するようにした実用新案登録請求
の範囲第１項から第５項のいずれか１項に記載
の羽口廻りの構造。[Scope of claims for utility model registration] (1) 1 or 2 parts on the bottom of the hearth, which is mainly made of stamp material.
An electric furnace provided with the bottom-blown tuyere bricks as described above, characterized in that a refractory brick is interposed between at least the stamp material and the tuyere bricks. (2) The tuyere according to claim 1 of the utility model registration claim, which includes a plurality of tuyere bricks, refractory bricks are filled between and around the plurality of tuyere bricks, and a stamp material is provided around the tuyere bricks. surrounding structure. (3) Registration of a utility model in which there are multiple tuyere bricks, each tuyere brick is surrounded by fireproof bricks, and dry stamp material is filled between the surrounded tuyere bricks to divide each tuyere brick. Claim 1
The structure around the tuyere described in section. (4) The structure around the tuyere according to any one of claims 1 to 3 of the utility model registration claim, in which the side surface of the tuyere brick is formed into a tapered shape that widens toward the bottom. (5) The structure around the tuyere according to any one of claims 1 to 4, wherein the quality of the refractory brick is intermediate between that of tuyere bricks and dry stamp material. (6) Place the refractory bricks around the tuyere.
The tuyeres according to any one of claims 1 to 5 of the claims 1 to 5, which are arranged so that each piece has a cross-sectional area of 0.4 m 2 to 1.2 m 2 in the lateral direction. structure.
Priority Applications (15)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986099968U JPH0247436Y2 (en) | 1986-06-30 | 1986-06-30 | |
| US07/027,277 US4735400A (en) | 1986-03-28 | 1987-03-17 | Plug for a refining apparatus |
| GB8706539A GB2188404B (en) | 1986-03-28 | 1987-03-19 | Plug for a refining apparatus |
| CA000532650A CA1285762C (en) | 1986-03-28 | 1987-03-20 | Plug for a refining apparatus |
| DE3744694A DE3744694C2 (en) | 1986-03-28 | 1987-03-26 | |
| DE19873709905 DE3709905A1 (en) | 1986-03-28 | 1987-03-26 | USE FOR A REFINING OVEN |
| FR878704300A FR2596417B1 (en) | 1986-03-28 | 1987-03-27 | CAP FOR REFINING APPARATUS |
| IT8747782A IT1205991B (en) | 1986-03-28 | 1987-03-27 | CAP FOR REFINING APPARATUS |
| KR1019870002968A KR910001487B1 (en) | 1986-03-28 | 1987-03-28 | Refining plug |
| FR878710461A FR2601695B1 (en) | 1986-03-28 | 1987-07-23 | CAP FOR REFINING APPARATUS |
| FR878710460A FR2601694B1 (en) | 1986-03-28 | 1987-07-23 | CAP FOR REFINING APPARATUS |
| FR878710459A FR2601693B1 (en) | 1986-03-28 | 1987-07-23 | CAP FOR REFINING APPARATUS |
| GB8917639A GB2219381B (en) | 1986-03-28 | 1989-08-02 | Plug for a refining apparatus |
| GB8917640A GB2219382B (en) | 1986-03-28 | 1989-08-02 | Plug for a refining apparatus |
| GB9005140A GB2228073B (en) | 1986-03-28 | 1990-03-07 | Plug for a refining apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986099968U JPH0247436Y2 (en) | 1986-06-30 | 1986-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637793U JPS637793U (en) | 1988-01-19 |
| JPH0247436Y2 true JPH0247436Y2 (en) | 1990-12-13 |
Family
ID=30969341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986099968U Expired JPH0247436Y2 (en) | 1986-03-28 | 1986-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247436Y2 (en) |
-
1986
- 1986-06-30 JP JP1986099968U patent/JPH0247436Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS637793U (en) | 1988-01-19 |
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