JPS62292253A - Drying device for lining refractory of ladle - Google Patents
Drying device for lining refractory of ladleInfo
- Publication number
- JPS62292253A JPS62292253A JP13496686A JP13496686A JPS62292253A JP S62292253 A JPS62292253 A JP S62292253A JP 13496686 A JP13496686 A JP 13496686A JP 13496686 A JP13496686 A JP 13496686A JP S62292253 A JPS62292253 A JP S62292253A
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- ladle
- exhaust gas
- burner
- lid
- 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
- 238000001035 drying Methods 0.000 title claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 claims abstract 3
- 239000007789 gas Substances 0.000 abstract description 28
- 239000000567 combustion gas Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010981 drying operation Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔発明の技術分野〕
この発明は、製鉄所、製鋼所または窯業メーカー等にお
いて、溶銑、溶鋼その他溶融金属を収容する取鍋の内張
シ耐大物の張り替え時における、前記内張り耐火物の乾
燥装置に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a lining system for a ladle that accommodates hot metal, molten steel, and other molten metals in ironworks, steel mills, ceramic manufacturers, etc. The present invention relates to a drying device for the refractory lining when relining large objects.
製鉄所、製鋼所または窯業メーカー等において、溶銑、
溶鋼その他溶融金属を収容するための取鍋は、その内張
り耐火物の張シ替えを行なったときに、内張り耐火物を
乾燥することが必要である。At ironworks, steel mills, ceramic manufacturers, etc., hot metal,
When a ladle for storing molten steel or other molten metal is relined with a refractory lining, it is necessary to dry the refractory lining.
第６図は従来の取鍋の内張り耐火物の乾燥装置の１例を
示す一部切欠き側面断面図である。第６図に示すように
、従来の乾燥装置は、取鍋１３の上端に載置して、取鍋
１３の開口面を覆う、下面に断熱材１５が張設された蓋
１６と、蓋１６に、蓋１６を貫通して設けられた乾燥用
バーナ１７と、蓋１６に、蓋１６を貫通して設けられた
排ガス排出用の煙突２０と、煙突２０の途中に設けられ
た熱交換器１８とからなっている。１９は取鍋１３の鉄
皮である。FIG. 6 is a partially cutaway side sectional view showing an example of a conventional ladle lining refractory drying device. As shown in FIG. 6, the conventional drying device includes a lid 16 that is placed on the upper end of the ladle 13 and covers the opening surface of the ladle 13, and has a heat insulating material 15 stretched on the lower surface of the lid 16. , a drying burner 17 provided through the lid 16, a chimney 20 for discharging exhaust gas provided through the lid 16, and a heat exchanger 18 provided in the middle of the chimney 20. It consists of 19 is the iron skin of the ladle 13.
取鍋１３の内張シ耐火物１４を乾燥するに当っては、蓋
１６ｆ：取鍋１３の上端に載置して、取鍋１３の開口面
を覆う。次いで、乾燥用バーナ１７によって取鍋１３内
に燃焼ガスを噴射し、その熱によって内張り耐火物１４
を乾燥する。このようにして、内張り耐火物１４を乾燥
した高温の燃焼排ガスは、煙突２０を通って、取鍋１３
内から外部へ排出される。熱交換器１８は、バーナ１７
の燃焼用の空気を取り入れる配管２１内の空気を昇温す
るために設けられている。バーナ１７の燃焼時の空気は
、熱交換器１８を通るバーナ１７の排ガスによって昇温
される。バーナ１７から噴射する火炎の温度は、燃焼用
の空気が昇温されることによシ高温となり、取鍋１３の
内張り耐火物１４の乾燥能率の向上に役立っている。When drying the refractory lining 14 of the ladle 13, the lid 16f is placed on the upper end of the ladle 13 to cover the opening surface of the ladle 13. Next, combustion gas is injected into the ladle 13 by the drying burner 17, and the lining refractory 14 is heated by the drying burner 17.
Dry. In this way, the high temperature combustion exhaust gas that has dried the lining refractory 14 passes through the chimney 20 and into the ladle 13.
It is expelled from the inside to the outside. The heat exchanger 18 is the burner 17
This is provided to raise the temperature of the air in the pipe 21 that takes in air for combustion. The air during combustion in the burner 17 is heated by the exhaust gas from the burner 17 passing through the heat exchanger 18 . The temperature of the flame injected from the burner 17 becomes high due to the increased temperature of the combustion air, which helps improve the drying efficiency of the refractory lining 14 of the ladle 13.
しかしながら、上述した従来の耐火物乾燥装置には、次
のような問題がある。However, the conventional refractory drying apparatus described above has the following problems.
■蓋には、バーナ、熱交換器、燃料配管、燃焼空気配管
、およびその他の各種制御装置等が、取り付けられてい
るので、蓋がこれら装置で複雑になり、各装置の保守点
検が困難である。さらにこれらの装置を取り付けるため
に蓋の強度を強化する必要があるので、蓋の重量が大き
くなる。■Since burners, heat exchangers, fuel piping, combustion air piping, and various other control devices are attached to the lid, the lid becomes complicated with these devices, making maintenance and inspection of each device difficult. be. Furthermore, the strength of the lid must be strengthened in order to attach these devices, which increases the weight of the lid.
■熱交換器のように、高さの大きいものがあるため、装
置全体の高さが高くなる。■Since some items, such as heat exchangers, are large in height, the overall height of the equipment increases.
■蓋の重量が重く、装置の高さ寸法が大きいため、装置
の移動、取扱い等に困難性が伴うとともに、天井クレー
ン等の懸吊荷重制限、高さ制限等の条件によって取扱い
が規制を受けることがある。■Due to the heavy weight of the lid and the large height of the device, it is difficult to move and handle the device, and handling is subject to restrictions due to conditions such as hanging load restrictions and height restrictions for overhead cranes, etc. Sometimes.
■燃焼用空気の予熱は、煙突を通過する排ガスの熱のみ
で行われる。従って、煙突以外の部分、例えば取鍋の上
縁と蓋の下面との接触部の隙間から逃げる排急の量が多
いと、煙突を通過する排ガスの景が減少するので、燃焼
用空気の予熱効果があがらない。■Preheating of the combustion air is performed only by the heat of the exhaust gas passing through the chimney. Therefore, if there is a large amount of exhaust gas escaping from parts other than the chimney, such as the gap between the upper edge of the ladle and the bottom surface of the lid, the visibility of the exhaust gas passing through the chimney will be reduced, which will preheat the combustion air. It's not effective.
従ってこの発明の目的は、取鍋内の燃焼排ガスの熱によ
って、バーナの燃焼空気を、効率良く、しかも確実に昇
温することが可能な、取鍋の内張り耐火物乾燥装置を提
供することにある。Therefore, an object of the present invention is to provide a ladle lining refractory drying device that can efficiently and reliably raise the temperature of combustion air in a burner using the heat of combustion exhaust gas in the ladle. be.
この発明は、取鍋の上端に載置して、前記取鍋の開口面
を覆う菱と、前記蓋の中央部に貫通して設けられたバー
ナとからなる取鍋の内張シ耐大物乾燥装置において、前
記蓋を環状枠と前記環状枠の直径部に取り付けられた支
持板と、前記環状枠および前記支持板の下面に取り付け
られた耐火物とから構成し、前記耐火物に、一方の端部
が前記蓋の側面部において空気取入用配管に連結され、
他方の゛端部が前記バーナに連結された、前記一方の端
部から取り入れた空気を、前記他方の端部から前記バー
ナに送り込むための複数条の空気流通孔と、前記複数条
の空気流通孔間において前記耐火物を垂直に貫通する複
数個の排ガス排出孔とを設けたことに特徴を有するもの
である。This invention provides a ladle lining that is resistant to drying large objects, and includes a rhombus that is placed on the upper end of the ladle and covers the opening surface of the ladle, and a burner that is provided through the center of the lid. In the apparatus, the lid includes an annular frame, a support plate attached to a diameter portion of the annular frame, and a refractory attached to the lower surface of the annular frame and the support plate, and the refractory has one side. An end portion is connected to an air intake pipe at a side portion of the lid,
a plurality of air circulation holes, the other end of which is connected to the burner, for sending air taken in from the one end to the burner from the other end; and the plurality of air circulation holes. The present invention is characterized in that a plurality of exhaust gas discharge holes are provided between the holes and vertically penetrate the refractory.
−４＝ 次にこの発明を図面を参照しながら説明する。 −4= Next, the present invention will be explained with reference to the drawings.
第１図はこの発明の取鍋の内張り耐火物乾燥装置の１実
施態様を示す平面図、第２図は側面図、第３図は蓋下面
の耐火物の部分斜視図である。第１図〜第３図に示すよ
うに、取鍋の内張シ耐大物乾燥装置１は、蓋２およびバ
ーナ３からなっている。FIG. 1 is a plan view showing one embodiment of the ladle lining refractory drying device of the present invention, FIG. 2 is a side view, and FIG. 3 is a partial perspective view of the refractory on the lower surface of the lid. As shown in FIGS. 1 to 3, a ladle lining and large object drying apparatus 1 includes a lid 2 and a burner 3.
バーナ３は蓋２の中央部に蓋２を貫通して設けられてい
る。蓋２は、環状枠４と環状枠４の直径部に取り付けら
れた支持板５と、環状枠４および支持板５の下面に取り
付けられた耐火物６とによって構成されている。耐火物
６は、コージュライト質のセラミック材等の成形（焼成
）が可能で、且つ、耐熱性に優れた断熱材を使用するべ
きである。耐火物６は、ゼルト締結式、嵌め込み式、ま
たは、固定式によシ、環状枠４および支持板５に取り付
けられる。耐火物６に控、支持板５と平行に断面が四角
形の複数条の空気流通孔７が、蓋２の一方の側面部２ａ
から、他方の側面部２ｂまで貫通して設けられている。The burner 3 is provided in the center of the lid 2 so as to penetrate through the lid 2. The lid 2 is composed of an annular frame 4, a support plate 5 attached to the diameter portion of the annular frame 4, and a refractory 6 attached to the lower surface of the annular frame 4 and the support plate 5. The refractory 6 should be a heat insulating material that can be molded (fired) and has excellent heat resistance, such as cordierite ceramic material. The refractory 6 is attached to the annular frame 4 and the support plate 5 by a bolt fastening type, a fitting type, or a fixed type. A plurality of air circulation holes 7 having a rectangular cross section are arranged parallel to the refractory 6 and parallel to the support plate 5 on one side surface 2a of the lid 2.
It is provided so as to penetrate from the side surface portion 2b to the other side surface portion 2b.
耐火物６には、耐火物６ｔ−垂直に貫通する断面が四角
形の複数個の排ガス排出孔８が設けられている。排ガス
排出孔８は、第３図に示すように、複数条の空気流通孔
７，７・・・間に、一定の間隔をあけて、耐火物６のほ
ぼ全面に設けられている。空気流通孔７と排ガス排出孔
８との間の耐火物６ａの厚さは、１〜５■とするべきで
ある。蓋２の一方の側面部２ａには、側面部２ａの形状
に沿って、空気導入用の集合管９が弧状に設けられてい
る。集合管９は、複数条の空気流通孔７の各々の一端に
接続され、空気成人用配管１０から取り入れた、バーナ
３の燃焼用の空気を、複数条の空気流通孔７の各々に送
り込む。The refractory 6 is provided with a plurality of exhaust gas discharge holes 8 having a rectangular cross section and passing through the refractory 6t perpendicularly. As shown in FIG. 3, the exhaust gas discharge holes 8 are provided on almost the entire surface of the refractory 6 at regular intervals between the plurality of air circulation holes 7, 7, . . . . The thickness of the refractory material 6a between the air flow hole 7 and the exhaust gas discharge hole 8 should be 1 to 5 mm. A collecting pipe 9 for introducing air is provided in an arc shape on one side surface 2a of the lid 2 along the shape of the side surface 2a. The collecting pipe 9 is connected to one end of each of the plurality of air circulation holes 7, and sends air for combustion in the burner 3 taken in from the air adult pipe 10 to each of the plurality of air circulation holes 7.
蓋２の他方の側面部２ｂには、側面部２ｂの形状に沿っ
て、空気排出用の集合管１１．１１が弧状に設けられて
いる。集合管１１．１１は、複数条の空気流通孔７の各
々の他端に接続されている゛。On the other side surface 2b of the lid 2, a collecting pipe 11.11 for air discharge is provided in an arc shape along the shape of the side surface 2b. The collecting pipe 11.11 is connected to the other end of each of the plurality of air circulation holes 7.
集合管１１．１１の上部には、集合管１１．１１から排
出された空気を、バーナ３に送シ込むための連結管１２
．１２が接続されている。At the upper part of the collecting pipe 11.11, there is a connecting pipe 12 for sending the air discharged from the collecting pipe 11.11 to the burner 3.
．． 12 are connected.
第４図はこの発明の取鍋の内張り耐火物乾燥装置を取鍋
に載置した状態を示す一部切欠き側面断面図である。第
４図に示すように、取鍋の内張り耐火物を乾燥する場合
には、先ず、取鍋の内張り耐火物乾燥装置１ｔ−１取鍋
１３の上端に載置して取鍋１３の開口面を覆う。次いで
、バーナ３によシ、取鍋１３内に燃焼ガスを噴射させて
、取鍋１３の内張り耐火物１４の乾燥を行う。１９は取
鍋１３の鉄皮である。燃焼中の燃焼ガスの排ガスは、蓋
２の下面全体を加熱した後、排ガス排出孔８から、取鍋
１３の外部へ排出される。この際、空気流通孔７内を通
る空気は、耐火物６を通して、燃焼ガスの排ガスにより
昇温される。この昇温された空気は集合管１１．１１お
よび連結管１２．１２’ｔ−通って、バーナ３に送り込
まれ、バーナ３の燃焼用空気として使用される。バーナ
３は、昇温された空気により、効率良く高温の燃焼ガス
を取鍋１３内に噴射することができる。FIG. 4 is a partially cutaway side sectional view showing the ladle lining refractory drying device of the present invention placed on a ladle. As shown in FIG. 4, when drying the refractory lining of a ladle, first, the ladle lining refractory dryer 1t-1 is placed on the upper end of the ladle 13 and the opening surface of the ladle 13 is dried. cover. Next, the burner 3 injects combustion gas into the ladle 13 to dry the refractory lining 14 of the ladle 13. 19 is the iron skin of the ladle 13. The exhaust gas of the combustion gas during combustion heats the entire lower surface of the lid 2, and then is discharged to the outside of the ladle 13 through the exhaust gas discharge hole 8. At this time, the air passing through the air circulation hole 7 passes through the refractory 6 and is heated by the exhaust gas of the combustion gas. This heated air is fed into the burner 3 through the collecting pipe 11.11 and the connecting pipe 12.12't and is used as combustion air for the burner 3. The burner 3 can efficiently inject high-temperature combustion gas into the ladle 13 using the heated air.
第５図は、この発明の他の実施態様を示す平面図である
。この実施態様においては、排ガス排出孔８の数が少な
く、例えば第５図に示すように、耐火物６の中央部にの
み設けられている。このよ＝ ７−
うに、排ガス排出孔８の数を少なくすると、燃焼排ガス
により蓋２が高温に加熱されるため、バーナ３に送り込
まれる空気の温度を高めることができる。さらに、バー
ナ３に送シ込まれる空気の温度をよシ高めるためには、
排ガス排出孔８を少数とし、さらに、排ガス排出孔８お
よび空気流通孔７が設けられていない耐火物６の下面に
上部が塞がった垂直な溝を設けて、蓋２の下面の熱を受
ける面積を大きくする。FIG. 5 is a plan view showing another embodiment of the invention. In this embodiment, the number of exhaust gas discharge holes 8 is small and, for example, as shown in FIG. 5, they are provided only in the center of the refractory 6. When the number of exhaust gas discharge holes 8 is reduced in this way, the lid 2 is heated to a high temperature by the combustion exhaust gas, so that the temperature of the air sent into the burner 3 can be increased. Furthermore, in order to further increase the temperature of the air sent to the burner 3,
The number of exhaust gas discharge holes 8 is reduced, and a vertical groove with a closed top is provided on the lower surface of the refractory 6 where the exhaust gas discharge holes 8 and air circulation holes 7 are not provided, thereby reducing the heat receiving area of the lower surface of the lid 2. Make it bigger.
なお、空気流通孔７および排ガス排出孔８の断面形状は
、矩形、六角形等の多角形、丸形等のいずれでもよい。Note that the cross-sectional shapes of the air circulation holes 7 and the exhaust gas discharge holes 8 may be any one of a rectangular shape, a polygonal shape such as a hexagonal shape, a round shape, and the like.
以上述べたように、この発明の取鍋の内張シ耐火物乾燥
装置によれば、
■蓋の上に熱交換器および煙突を搭載しない構造なので
、保守点検が容易に行える。As described above, according to the ladle lining refractory drying apparatus of the present invention, (1) maintenance and inspection can be easily performed because the structure does not include a heat exchanger and a chimney mounted on the lid;
■空気の通過する部分が中空なため、さらに、耐火物と
して使用するセラミック材自体が軽量なため、蓋全体の
重量が軽減する。■Since the part through which air passes is hollow, and the ceramic material used as the refractory itself is lightweight, the overall weight of the lid is reduced.
■熱交換器および煙突がないので、装置全体の高さが減
少し、取扱い、移動等が容易となり、天井クレーン等の
懸吊荷重制限等の制約を受けない。■Since there is no heat exchanger or chimney, the overall height of the device is reduced, making it easier to handle and move, and is not subject to restrictions such as hanging load limitations of overhead cranes.
■取鍋内の燃焼排ガスの熱を、蓋の下面のほぼ全面で受
けることができるので、効率良く熱交換をすることがで
き、省エネに寄与する。■The heat of the combustion exhaust gas in the ladle can be received over almost the entire bottom surface of the lid, allowing efficient heat exchange and contributing to energy savings.
等、工業上優れた効果がもたらされる。etc., bring about excellent industrial effects.
第１図はこの発明の取鍋の内張シ耐火物乾燥装置の１実
施態様を示す平面図、第２図は側面図、第３図は蓋下面
の耐火物の部分斜視図、第４図はこの発明の取鍋の内張
り耐火物乾燥装置を取鍋に載置した状態を示す一部切欠
き側面断面図、第５図はこの発明の他の実施態様を示す
平面図、第６図は従来の取鍋の内張り耐火物乾燥装置の
１例を示す一部切欠き側面断面図である。図面において
、ｌ・・・取鍋の内張り耐火物乾燥装置、２・・・蓋、
３・・・バーナ、４・・・環状枠、
５・・・支持板、６・・・耐火物、 ７・・
・空気流通孔、８・・・排ガス排出孔、 ９・・・集合
管、１０・・・空気取入用配管、１１・・・集合管、１
２・・・連結管、 １３・・・取鍋、１４・・・耐
火物、 １５・・・断熱材、１６・・・蓋、
１７・・・バーナ、１８・・・熱交換器、 １
９・・・鉄皮、２０・・・煙突、 ２１・・・配
管。Fig. 1 is a plan view showing one embodiment of the ladle lining refractory drying device of the present invention, Fig. 2 is a side view, Fig. 3 is a partial perspective view of the refractory on the underside of the lid, and Fig. 4. 5 is a partially cutaway side sectional view showing the ladle lining refractory drying device of this invention placed on a ladle, FIG. 5 is a plan view showing another embodiment of the invention, and FIG. FIG. 2 is a partially cutaway side sectional view showing an example of a conventional ladle lining refractory drying device. In the drawings, l... Ladle lining refractory drying device, 2... Lid,
3... Burner, 4... Annular frame,
5... Support plate, 6... Refractory material, 7...
・Air circulation hole, 8... Exhaust gas discharge hole, 9... Collecting pipe, 10... Air intake piping, 11... Collecting pipe, 1
2... Connecting pipe, 13... Ladle, 14... Refractory, 15... Insulating material, 16... Lid,
17...Burner, 18...Heat exchanger, 1
9... Iron skin, 20... Chimney, 21... Piping.
Claims (1)
前記蓋の中央部に貫通して設けられたバーナとからなる
取鍋の内張り耐火物乾燥装置において、 前記蓋を環状枠と前記環状枠の直径部に取り付けられた
支持板と、前記環状枠および前記支持板の下面に取り付
けられた耐火物とから構成し、前記耐火物に、一方の端
部が前記蓋の側面部において空気取入用配管に連結され
、他方の端部が前記バーナに連結された、前記一方の端
部から取り入れた空気を、前記他方の端部から前記バー
ナに送り込むための複数条の空気流通孔と、前記複数条
の空気流通孔間において、前記耐火物を垂直に貫通する
複数個の排ガス排出孔とを設けたことを特徴とする取鍋
の内張り耐火物乾燥装置。[Claims] A lid placed on the upper end of the ladle to cover the opening surface of the ladle;
A ladle-lined refractory drying device comprising: a burner penetrating through the center of the lid; a refractory attached to the lower surface of the support plate; one end of the refractory is connected to an air intake pipe on a side surface of the lid, and the other end is connected to the burner. a plurality of air circulation holes for feeding air taken in from the one end into the burner from the other end, and the refractory vertically between the plurality of air circulation holes. A ladle lining refractory drying device characterized by having a plurality of penetrating exhaust gas discharge holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13496686A JPS62292253A (en) | 1986-06-12 | 1986-06-12 | Drying device for lining refractory of ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13496686A JPS62292253A (en) | 1986-06-12 | 1986-06-12 | Drying device for lining refractory of ladle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62292253A true JPS62292253A (en) | 1987-12-18 |
| JPH0144430B2 JPH0144430B2 (en) | 1989-09-27 |
Family
ID=15140752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13496686A Granted JPS62292253A (en) | 1986-06-12 | 1986-06-12 | Drying device for lining refractory of ladle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62292253A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127363U (en) * | 1989-03-30 | 1990-10-19 | ||
| CN110434320A (en) * | 2019-09-18 | 2019-11-12 | 山东钢铁股份有限公司 | A kind of steel smelting equipment and its baking of tundish device protection plate |
| CN111922327A (en) * | 2020-09-24 | 2020-11-13 | 河北煜剑节能技术有限公司 | High-efficient be built by contract and roast package ware |
-
1986
- 1986-06-12 JP JP13496686A patent/JPS62292253A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02127363U (en) * | 1989-03-30 | 1990-10-19 | ||
| CN110434320A (en) * | 2019-09-18 | 2019-11-12 | 山东钢铁股份有限公司 | A kind of steel smelting equipment and its baking of tundish device protection plate |
| CN111922327A (en) * | 2020-09-24 | 2020-11-13 | 河北煜剑节能技术有限公司 | High-efficient be built by contract and roast package ware |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0144430B2 (en) | 1989-09-27 |
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