JPH0538029Y2 - - Google Patents
Info
- Publication number
- JPH0538029Y2 JPH0538029Y2 JP18654287U JP18654287U JPH0538029Y2 JP H0538029 Y2 JPH0538029 Y2 JP H0538029Y2 JP 18654287 U JP18654287 U JP 18654287U JP 18654287 U JP18654287 U JP 18654287U JP H0538029 Y2 JPH0538029 Y2 JP H0538029Y2
- Authority
- JP
- Japan
- Prior art keywords
- hot metal
- gutter
- steam
- gutter cover
- cooling
- 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
- 239000002184 metal Substances 0.000 claims description 72
- 238000001816 cooling Methods 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011823 monolithic refractory Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、溶銑樋及び樋カバーの冷却装置に
関し、特に樋カバーで発生した冷却水の蒸気を溶
銑樋に導入することにより冷却効果を高めたもの
である。[Detailed description of the invention] [Industrial application field] This invention relates to a cooling device for hot metal gutter and gutter cover, and in particular, the cooling effect is enhanced by introducing the steam of cooling water generated in the gutter cover into the hot metal gutter. It is something that
溶銑樋もしくは樋カバーの冷却に関しては、特
開昭53−39911号公報に、溶銑樋の外周全面に蒸
気流を接触させて、溶銑樋の温度を制御する溶銑
樋の温度制御方法が示されている。また特開昭55
−107707号公報には、高炉の樋外周面に冷却装置
を設けて、その冷却装置により出銑時の温度制御
を行い、樋内周面に溶銑滓が均一に付着するよう
にした高炉の樋温度制御方法が示されている。更
に、特開昭53−77809号公報には、樋カバー構成
体の全部もしくは任意部分に冷却管を配設もしく
は埋設し、その冷却管を気水分離ドラムに接続せ
しめた溶銑、溶銑樋カバー冷却装置が示されてい
る。
Regarding the cooling of the hot metal gutter or gutter cover, Japanese Patent Application Laid-open No. 1983-39911 discloses a method for controlling the temperature of the hot metal gutter in which the temperature of the hot metal gutter is controlled by bringing a steam flow into contact with the entire outer circumference of the hot metal gutter. There is. Also, JP-A-55
Publication No. -107707 describes a blast furnace gutter in which a cooling device is installed on the outer peripheral surface of the blast furnace gutter, and the cooling device controls the temperature during tapping so that hot metal slag is evenly deposited on the inner peripheral surface of the gutter. A temperature control method is shown. Furthermore, JP-A No. 53-77809 discloses a hot metal gutter cover cooling method in which cooling pipes are installed or buried in all or any part of the gutter cover structure and the cooling pipes are connected to a steam-water separation drum. Equipment is shown.
〔考案が解決しようとする問題点〕
しかしながら、上記従来技術のうち、特開昭53
−39911号公報並びに特開昭55−107707号公報に
示されるものは、いずれも溶銑樋自体の外周面を
冷却媒体で冷却するものであり、溶銑樋内を流れ
る高温の溶銑温度を直接的に低下させるものでは
ないから、溶銑の冷却効率が十分に高いとはいえ
ない。[Problems to be solved by the invention] However, among the above-mentioned conventional techniques,
-39911 and JP-A-55-107707 both cool the outer circumferential surface of the hot metal gutter itself with a cooling medium, and directly control the temperature of the high-temperature hot metal flowing inside the hot metal gutter. Therefore, it cannot be said that the cooling efficiency of hot metal is sufficiently high.
これに対して特開昭53−77809号公報に示され
るものは、樋カバーの冷却装置であるが、樋カバ
ー内で発生した水蒸気は、更に利用を図ることな
くそのまま大気中に放散されてしまう。 On the other hand, the device shown in JP-A-53-77809 is a gutter cover cooling device, but the water vapor generated inside the gutter cover is dissipated into the atmosphere without being further utilized. .
すなわち、上記従来のものは、いずれの場合も
溶銑樋内部側の熱負荷に対しては対策がなされて
おらず放置されたままであり、まして冷却水から
発生する蒸気をも冷却に有効に利用することまで
は考慮されていない。したがつて、その冷却効率
の向上、溶銑樋を構成する耐火物の損耗速度の低
減等の点で、なお問題が残されていた。 In other words, in any case, the conventional methods described above do not take any measures against the heat load inside the hot metal gutter and are left as they are, and even more so, the steam generated from the cooling water is not effectively used for cooling. That hasn't even been taken into consideration. Therefore, problems still remain in terms of improving the cooling efficiency and reducing the rate of wear and tear of the refractories constituting the hot metal trough.
そこで、上記従来の問題点を解消するこの考案
の目的とするところは、樋カバーの冷却の際冷却
水から発生する蒸気を、高温発生領域である溶銑
樋内を流れる溶銑面に導入し、その蒸気の分解熱
を利用して高温発生領域自体の温度低下を図り、
もつて効率の良い冷却を達成することのできる溶
銑樋及び樋カバー冷却装置を提供することにあ
る。 Therefore, the purpose of this invention to solve the above-mentioned conventional problems is to introduce the steam generated from the cooling water when cooling the gutter cover to the surface of the hot metal flowing in the hot metal gutter, which is the area where high temperature is generated. Using the heat of decomposition of steam, we aim to lower the temperature of the high temperature generation area itself,
It is an object of the present invention to provide a hot metal gutter and gutter cover cooling device that can achieve efficient cooling.
〔問題点を解決するための手段〕
上記の目的を達成するこの考案は、冷却水を内
蔵してなる溶銑樋カバーにおける溶銑予備処理剤
吹き込み用の開口部に、樋カバー内で発生した水
蒸気を下方に導いて溶銑樋中の溶銑に吹きつける
蒸気噴射経路を形成した。[Means for Solving the Problems] This invention, which achieves the above-mentioned purpose, uses water vapor generated in the gutter cover to be introduced into the opening for blowing the hot metal pretreatment agent in the hot metal gutter cover, which contains cooling water. A steam injection path was formed that guided the steam downward and sprayed it onto the hot metal in the hot metal trough.
溶銑樋カバー内に供給された冷却水は、吹き込
み用の開口部を経て溶銑予備処理剤（脱珪剤）が
吹き込まれると、溶銑中の炭素と脱珪剤中の酸素
とが反応して発熱し、樋カバーに大きな熱負荷が
かかる。樋カバー中の冷却水はその熱を吸収して
気化し、水蒸気となつて蒸気噴射経路を通り高温
の溶銑樋内の溶銑に吹きつけられ、熱分解するこ
とで雰囲気ガスの熱を奪う。これによつて溶銑樋
内の最高温度を低下せしめ、冷却効率の向上と溶
銑樋を構成する耐火物の損耗速度の低減を達成す
る。
When the hot metal pretreatment agent (desiliconizing agent) is blown into the cooling water supplied into the hot metal gutter cover through the blowing opening, carbon in the hot metal and oxygen in the desiliconizing agent react and generate heat. This places a large heat load on the gutter cover. The cooling water in the gutter cover absorbs the heat and vaporizes, becoming water vapor, which passes through the steam injection path and is blown against the hot metal in the hot metal gutter, where it decomposes and removes the heat from the atmospheric gas. This lowers the maximum temperature inside the hot metal gutter, improving cooling efficiency and reducing the rate of wear and tear of the refractories constituting the hot metal gutter.
以下、この考案の一実施例を図面に基づいて説
明する。
An embodiment of this invention will be described below based on the drawings.
第１図は、高炉鋳床の溶銑樋１を流れる溶銑２
に脱珪剤３を添加する脱珪設備（反応槽）の模式
図である。 Figure 1 shows hot metal 2 flowing through hot metal trough 1 of a blast furnace casthouse.
It is a schematic diagram of the desiliconization equipment (reaction tank) which adds the desiliconization agent 3 to.
この脱珪設備は、脱珪剤３を溶銑樋１内の溶銑
２の上面に向かつて噴射する吹き込みランス４
と、この吹き込みランス４を溶銑２の高温による
損傷から保護するため上方に退避させるランス昇
降装置５とからなる脱珪剤装入手段を備えてラン
ス支持台６上に支持されている。上記のランス昇
降装置５は、例えばランス支持台６上に立設され
た支柱７の頂部に滑車８を設けて、これに昇降ワ
イヤ９を通し、その昇降ワイヤ９の一端に昇降ホ
ルダ１０を接続するとともにワイヤ他端側を巻き
上げウインチ１１に接続して構成されている。こ
のランス昇降装置５の昇降ホルダ１０は支柱７を
案内レールとしており、この昇降ホルダ１０に吹
き込みランス４がＵボルト１２で取り付けられ
て、その噴射口４Ａが溶銑樋１の溶銑２の直上に
位置するように、昇降自在に支持されている。こ
のようにしてランス支持台６上に支持された吹き
込みランス４は、脱珪剤噴射のとき以外はランス
昇降装置５により上方の退避位置に巻き上げられ
ている。 This desiliconization equipment includes a blowing lance 4 that injects a desiliconizing agent 3 toward the upper surface of hot metal 2 in a hot metal gutter 1.
and a lance elevating device 5 for retracting the blowing lance 4 upward to protect it from damage caused by the high temperature of the hot metal 2. The above-mentioned lance lifting device 5 includes, for example, a pulley 8 provided at the top of a column 7 erected on a lance support 6, a lifting wire 9 passed through the pulley 8, and a lifting holder 10 connected to one end of the lifting wire 9. At the same time, the other end of the wire is connected to a winding winch 11. The elevating holder 10 of this lance elevating device 5 uses the support 7 as a guide rail, and the blowing lance 4 is attached to this elevating holder 10 with a U bolt 12, and its injection port 4A is located directly above the hot metal 2 of the hot metal gutter 1. It is supported so that it can be raised and lowered freely. The blowing lance 4 supported on the lance support base 6 in this manner is hoisted up to an upper retracted position by the lance lifting device 5 except when injecting the desiliconizing agent.
而して、上記の脱珪剤装入手段とその下方にあ
る溶銑樋１との中間に、溶銑２の高温を遮断する
ように樋カバー１５が設置される。この樋カバー
１５は、架台１６で支えられて、不定形耐火物で
ある耐熱キヤスタブル１７を会して取り付けられ
ている。なお、１８は耐熱キヤスタブル１７のず
れを防ぐアンカである。更に詳細に説明すると、
樋カバー１５は、冷却水入口１９を有して脱珪反
応槽を覆う方形の密閉箱からなり、ほぼ中央に、
溶銑予備処理剤としての脱珪剤３を吹き込むため
の開口部２０が方形に形成されている。その開口
部２０を囲む周縁は高さ（厚み）を一段と高くし
て蒸気溜め空間２１が設けられ、且つその空間を
仕切る堰２２が、樋カバー１５の開口部２０の内
周面２３をカバー内部から囲うようにして、カバ
ー底面から立設されている。その堰２２の高さ
は、蒸気溜め空間２１の高さより低いが、冷却水
入口１９から注入される冷却水水位Ｌよりは常に
高くしてある。かくして堰２２と開口部２０の内
周面２３との間に、蒸気溜め空間２１内の蒸気を
下方に導く通路２４が形成される。更に、その通
路２４の下端には開口内周面２３から突設されて
下方に開口する蒸気噴出口２５が設けられて、こ
の蒸気噴出口２５と通路２４とで蒸気噴射経路２
６が構成されている。蒸気噴出口２５の数は、特
に限定する必要はなく、例えば方形の開口の４面
からなる内周面２３の各面に１個づつ計４個を配
設するなど適宜でよいが、溶銑２に平均に噴射で
きるように対称的に配置することが好ましい。 A gutter cover 15 is installed between the desiliconizing agent charging means and the hot metal gutter 1 located below it so as to block the high temperature of the hot metal 2. This gutter cover 15 is supported by a pedestal 16 and is attached to a heat-resistant caster 17, which is a monolithic refractory. Note that 18 is an anchor that prevents the heat-resistant castable 17 from shifting. To explain in more detail,
The gutter cover 15 consists of a rectangular sealed box that has a cooling water inlet 19 and covers the desiliconization reaction tank, and has a hole approximately in the center.
An opening 20 for blowing a desiliconizing agent 3 as a hot metal pretreatment agent is formed in a rectangular shape. The height (thickness) of the periphery surrounding the opening 20 is further increased to provide a steam storage space 21, and a weir 22 that partitions this space extends the inner circumferential surface 23 of the opening 20 of the gutter cover 15 into the inside of the cover. It is placed upright from the bottom of the cover so as to surround it. The height of the weir 22 is lower than the height of the steam storage space 21, but is always higher than the level L of cooling water injected from the cooling water inlet 19. Thus, a passage 24 is formed between the weir 22 and the inner circumferential surface 23 of the opening 20, which guides the steam in the steam storage space 21 downward. Furthermore, a steam jet port 25 is provided at the lower end of the passage 24 and projects from the opening inner circumferential surface 23 and opens downward, and the steam jet port 25 and the passage 24 form a steam injection path 2
6 are configured. The number of steam jet ports 25 does not need to be particularly limited, and may be appropriately arranged, for example, one on each surface of the inner circumferential surface 23 consisting of four sides of a rectangular opening. It is preferable to arrange them symmetrically so that they can be sprayed evenly.
次に作用を説明する。 Next, the action will be explained.
溶銑樋１を流れる溶銑２に脱珪剤３を添加して
溶銑予備処理を行う際は、脱珪設備のランス昇降
装置５を駆動して、吹き込みランス４を退避位置
から第１図に鎖線で示す噴射位置に下降させる。 When performing hot metal pretreatment by adding a desiliconizing agent 3 to the hot metal 2 flowing through the hot metal trough 1, the lance lifting device 5 of the desiliconizing equipment is driven to move the blowing lance 4 from the retracted position as indicated by the chain line in Fig. 1. Lower to the injection position shown.
続いて、脱珪剤３を吹き込みランス４に送り、
その噴射口４Ａから溶銑２の面に向かつて噴射す
る。この実施例の脱珪剤３は成分としてT.Feを
50％含有する粒度150μm以下の焼結粉からなるも
ので、その脱珪剤原単位15Kg／t.pを8Nm3／min
の空気流とともに噴射した。これにより溶銑２と
脱珪剤３との間に周知の脱珪反応が行われて、溶
銑２の脱SiO2が進行すると共に脱珪スラグ３０
が生成される。この脱珪処理を行つている間に、
溶銑２中の炭素［Ｃ］と脱珪剤３中の酸素とが反
応して、雰囲気温度は1300℃ないし1500℃にまで
上昇し、樋カバー１５に非常に大きな熱負荷がか
かる、樋カバー１５の冷却水入口１９から供給さ
れた冷却水３１は、その熱を吸収して蒸気３２と
なり、蒸気溜め空間２１に集まり、通路２４と蒸
気噴出口２５からなる蒸気噴射経路２６を通つて
高温の溶銑樋１内へ吹き込まれる。この吹き込ま
れる蒸気は、溶銑樋１内の高温部で昇温され、更
には熱分解することで溶銑樋１内雰囲気ガスから
熱を奪い取る。 Next, the desiliconizing agent 3 is blown into the lance 4,
The hot metal is injected toward the surface of the hot metal 2 from the injection port 4A. The desiliconizing agent 3 of this example contains T.Fe as a component.
It is made of sintered powder with a grain size of 150μm or less containing 50%, and its desiliconization unit consumption is 15Kg/tp to 8Nm 3 /min.
It was injected with a stream of air. As a result, a well-known desiliconization reaction is performed between the hot metal 2 and the desiliconization agent 3, and as the SiO 2 removal of the hot metal 2 progresses, the desiliconization slag 30
is generated. While performing this desiliconization treatment,
The carbon [C] in the hot metal 2 reacts with the oxygen in the desiliconizing agent 3, and the atmospheric temperature rises to 1300°C to 1500°C, which places a very large thermal load on the gutter cover 15. The cooling water 31 supplied from the cooling water inlet 19 absorbs the heat and becomes steam 32, which collects in the steam reservoir space 21 and passes through the steam injection path 26 consisting of the passage 24 and the steam jet port 25 to the hot molten metal. Blown into gutter 1. The temperature of this blown steam is raised in a high-temperature section within the molten metal sluice 1, and is further thermally decomposed to remove heat from the atmospheric gas within the molten metal sluice 1.
第２図は、この実施例の冷却装置を使用した場
合と、従来の樋カバーによる場合との反応槽内温
度の推移を比較した記録結果を表すものである。
この図から明らかなように、脱珪剤噴射前は600
℃程度を示していた反応槽内温度が、噴射処理開
始で上昇を始め、10分経過まではほぼ同様に上昇
しているが、その後両者の昇温速度に差が生じ、
15分経過の時点で従来ならば1300℃に達したもの
が、この実施例のものは最高でも1100℃前後と、
約200℃低い値であつた。この冷却能力の向上に
ともなつて、溶銑樋１の構成材の耐久性も向上
し、従来は８日であつた耐久期間が12日に延長さ
れるという結果が得られた。 FIG. 2 shows the recorded results of comparing the changes in temperature inside the reaction tank when the cooling device of this embodiment was used and when a conventional gutter cover was used.
As is clear from this figure, before the desiliconizing agent injection, the
The temperature inside the reaction tank, which had been around ℃, started to rise at the start of the injection process, and rose at almost the same rate until 10 minutes had passed, but after that, a difference occurred in the rate of temperature rise between the two.
Conventionally, the temperature reached 1300℃ after 15 minutes, but in this example, the maximum temperature was around 1100℃.
The value was approximately 200℃ lower. Along with this improvement in cooling capacity, the durability of the constituent materials of the hot metal trough 1 also improved, resulting in an extension of the durability period from 8 days to 12 days.
又、このように溶銑樋１内の温度を下げ得たこ
とで、溶銑の脱炭量を抑制してより有効な脱珪反
応を行わせることができた。 Moreover, by being able to lower the temperature in the hot metal trough 1 in this way, it was possible to suppress the amount of decarburization of the hot metal and to perform a more effective desiliconization reaction.
更に、従来は樋カバー１５で発生した高温の水
蒸気を、そのカバーから上向きに突設した放出口
からそのまま大気中に放出していたため、作業者
に火傷を負わせる危険があり、保安の点からも問
題があつたのに対して、この実施例によれば水蒸
気を溶銑樋１の外へは放散させないから、安全性
向上させることもできた。 Furthermore, in the past, the high-temperature water vapor generated in the gutter cover 15 was directly released into the atmosphere from an upwardly projecting outlet from the cover, which created a risk of burns to workers, and this was not recommended from a safety point of view. However, according to this embodiment, water vapor is not diffused outside the hot metal trough 1, so safety can be improved.
なお、この実施例によれば、蒸気噴射経路２６
を樋カバー１５内に形成した蒸気吹き出し通路２
４と、樋カバー１５の開口部内周面２３に突設し
た蒸気噴出口２５とで構成したものを示したが、
この構成に限定されるものではない。例えば、蒸
気吹き出し通路２４を、配管で樋カバー１５の開
口部内周面２３の外に取り付け、その開口を下向
きにして形成してもよく、要は樋カバー１５内の
水蒸気を下方に導き溶銑樋１中の溶銑に吹きつけ
得る構成であればよい。 Note that, according to this embodiment, the steam injection path 26
A steam blowing passage 2 formed in the gutter cover 15
4 and a steam outlet 25 protruding from the inner circumferential surface 23 of the opening of the gutter cover 15.
It is not limited to this configuration. For example, the steam blowing passage 24 may be installed outside the inner circumferential surface 23 of the opening of the gutter cover 15 with piping and formed with the opening facing downward, in short, the steam in the gutter cover 15 is guided downward to the hot metal gutter. Any configuration is sufficient as long as it can spray the hot metal in No. 1.
以上説明したように、この考案によれば、冷却
水を内蔵してなる溶銑樋カバーにおける溶銑予備
処理剤吹き込み用の開口部に、樋カバー内で発生
した水蒸気を下方に導いて溶銑樋中の溶銑に吹き
つける蒸気噴射経路を形成した。そのため、溶銑
樋カバー内に供給された冷却水が溶銑予備処理で
発生した熱を吸収して発生する水蒸気をも溶銑樋
１内の冷却に利用できて、溶銑樋内の最高温度を
低下せしめることが可能となり、冷却効率の向上
と溶銑樋を構成する耐火物の損耗速度の低減を達
成するという効果が得られる。
As explained above, according to this invention, the water vapor generated in the gutter cover is guided downward into the opening for blowing the hot metal pretreatment agent in the hot metal gutter cover that contains cooling water. A steam injection path was formed to blow onto the hot metal. Therefore, the water vapor generated when the cooling water supplied into the hot metal gutter cover absorbs the heat generated in the hot metal pretreatment can also be used to cool the inside of the hot metal gutter 1, thereby lowering the maximum temperature inside the hot metal gutter. This makes it possible to achieve the effects of improving cooling efficiency and reducing the rate of wear of the refractories that make up the hot metal trough.
第１図はこの考案の一実施例である溶銑樋及び
樋カバー冷却装置の要部を切欠いて示す正面図、
第２図は第１図に示すものの効果を従来のものと
比較して説明する冷却能力のグラフである。
図中、１は溶銑樋、２は溶銑、１５は樋カバ
ー、２３は溶銑樋カバーの開口部、２６は蒸気噴
射経路である。
FIG. 1 is a cutaway front view showing the main parts of a hot metal gutter and gutter cover cooling device, which is an embodiment of this invention;
FIG. 2 is a graph of cooling capacity to explain the effect of the one shown in FIG. 1 in comparison with the conventional one. In the figure, 1 is a hot metal gutter, 2 is hot metal, 15 is a gutter cover, 23 is an opening of the hot metal gutter cover, and 26 is a steam injection path.
Claims (1)
銑予備処理剤吹き込み用の開口部に、樋カバー内
で発生した水蒸気を下方に導いて溶銑樋中の溶銑
に吹きつける蒸気噴射経路を形成したことを特徴
とする溶銑樋及び樋カバー冷却装置。 A steam injection path is formed in the opening for blowing the hot metal pretreatment agent in the hot metal gutter cover, which contains cooling water, to guide the water vapor generated in the gutter cover downward and spray it onto the hot metal in the hot metal gutter. Features hot metal gutter and gutter cover cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18654287U JPH0538029Y2 (en) | 1987-12-08 | 1987-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18654287U JPH0538029Y2 (en) | 1987-12-08 | 1987-12-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0189943U JPH0189943U (en) | 1989-06-13 |
| JPH0538029Y2 true JPH0538029Y2 (en) | 1993-09-27 |
Family
ID=31477766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18654287U Expired - Lifetime JPH0538029Y2 (en) | 1987-12-08 | 1987-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538029Y2 (en) |
-
1987
- 1987-12-08 JP JP18654287U patent/JPH0538029Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0189943U (en) | 1989-06-13 |
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