JPH0372013A - Device for treating molten iron - Google Patents
Device for treating molten ironInfo
- Publication number
- JPH0372013A JPH0372013A JP20562589A JP20562589A JPH0372013A JP H0372013 A JPH0372013 A JP H0372013A JP 20562589 A JP20562589 A JP 20562589A JP 20562589 A JP20562589 A JP 20562589A JP H0372013 A JPH0372013 A JP H0372013A
- Authority
- JP
- Japan
- Prior art keywords
- molten iron
- hot metal
- flux
- flow
- trough
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 36
- 229910052742 iron Inorganic materials 0.000 title abstract description 18
- 230000004907 flux Effects 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 64
- 229910052751 metal Inorganic materials 0.000 claims description 64
- 238000000034 method Methods 0.000 abstract description 9
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000002203 pretreatment Methods 0.000 abstract 1
- 238000011282 treatment Methods 0.000 description 8
- 239000002893 slag Substances 0.000 description 7
- 240000000982 Malva neglecta Species 0.000 description 3
- 235000000060 Malva neglecta Nutrition 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野Ｊ
本発明は、鋳床で脱珪、脱燐、脱硫などの処理を行うに
当り、フラックス添加をインジェクションによらないで
、高反応効率の処理を可能とする溶銑の処理装置に関す
る。[Detailed Description of the Invention] [Industrial Field of Application J] The present invention provides high reaction efficiency treatment without adding flux by injection when performing treatments such as desiliconization, dephosphorization, and desulfurization in a cast bed. The present invention relates to a hot metal processing device that enables the processing of hot metal.
〔従来の技術Ｊ
従来、高炉鋳床での脱珪、脱燐、脱硫処理を高効率で行
うための多くの技術が提案されている。[Prior Art J] Conventionally, many techniques have been proposed for highly efficient desiliconization, dephosphorization, and desulfurization treatments in blast furnace casthouses.
例えば、特開昭４９−８９６１９には溶銑樋の流下方向
に複数個の羽根車を設けることにより、上流で添加した
フラックスを羽根車により溶銑中に巻き込ませて反応効
率の向上を図ることが提示されている。この装置は、設
備費が高く、メンテナンスが難しいという問題がある。For example, Japanese Patent Application Laid-Open No. 49-89619 proposes that by providing a plurality of impellers in the downstream direction of the hot metal culvert, the flux added upstream is rolled into the hot metal by the impeller, thereby improving the reaction efficiency. has been done. This device has the problems of high equipment cost and difficult maintenance.
また、特開昭４９−１１９８１１にはフラックスを上置
した溶銑を落差のある所に落下させることにより、溶湯
自身で溶湯と脱硫剤を撹拌接触させながら脱硫を行わせ
る処理方法が提示されている。この方法はその後の鋳床
での脱珪処理での実施例から、効率が低いことが明らか
となっている。Furthermore, JP-A-49-119811 proposes a treatment method in which desulfurization is carried out by dropping hot metal on which flux is placed onto a place with a head to bring the molten metal into contact with the desulfurizing agent while stirring. . It has become clear from the subsequent examples of desiliconization treatment in the cast bed that this method has low efficiency.
これらの他に現在、鋳床で脱珪処理に利用されている方
法として溶銑樋上のランスから湯面にフラックスをブラ
スティングする方法（鉄と鋼。In addition to these methods, a method currently used for desiliconization in casthouses is the method of blasting flux onto the hot metal surface from a lance above the hot metal trough (iron and steel).
６８ （１９１１！２＋ 、 ５９４６１、あるいは鋳
床に反応槽を設けてランスを浸漬し、フラックスをイン
ジェクションする方法（鉄と鋼、 ７２ ｆ１９８６１
，５１２４１があるが、前者はフラックスを浴中深く吹
込むことができないために反応効率が低い。一方、後者
は浴深を深くすることにより効率を高めることが可能で
あるが、ランスコストが高いという欠点を有している。68 (1911!2+, 59461, or a method of installing a reaction tank in the cast bed, immersing the lance, and injecting flux (Iron and Steel, 72 f19861)
, 51241, but the former has low reaction efficiency because the flux cannot be blown deeply into the bath. On the other hand, although the latter can improve efficiency by increasing the depth of the bath, it has the disadvantage of high lance cost.
本発明者らは上記欠点を解決するためにさきに特願平１
−１６２６１３を提案している。その内容は、溶銑樋排
出端に段差を設け、該段差の下流に反応槽を連設し、こ
の段差部に前記溶銑樋からの溶銑流を反応槽の底まで案
内する案内樋を設け、反応槽の上流側に溶銑処理用フラ
ックスを添加する添加装置を付設したものである。In order to solve the above-mentioned drawbacks, the inventors of the present invention previously applied for patent application No.
-162613 is proposed. The contents are as follows: A step is provided at the discharge end of the hot metal gutter, a reaction tank is connected to the downstream of the step, a guide gutter is provided at this step to guide the hot metal flow from the hot metal gutter to the bottom of the reaction tank, and a reaction tank is installed at the step. An addition device for adding flux for hot metal treatment is attached to the upstream side of the tank.
〔発明が解決しようとする課題］
上記提案についてさらに研究を重ねた結果１反応槽の上
流側で溶銑上にフラックスをブラスティングした場合、
溶銑上のフラックスの一部は溶銑が案内樋を介して反応
槽に侵入する時、反応槽の浴面に浮遊するスラグに取り
込まれ、したがって、フラックスが十分活用されないと
いう不都合が明らかになった。[Problem to be solved by the invention] As a result of further research on the above proposal, it was found that when flux is blasted onto the hot metal on the upstream side of the reaction tank,
It has become clear that a part of the flux on the hot metal is taken up by the slag floating on the bath surface of the reaction tank when the hot metal enters the reaction tank through the guide trough, so that the flux is not fully utilized.
本発明は上記提案をさらに改善したもので、フラックス
を溶銑中にインジェクションすることなく、プラスチイ
ンクによるフラックスを溶銑落下流内に包み込み１反応
槽の溶銑内に深く侵入させることにより溶銑を高反応効
率で処理することのできる溶銑の処理装置を提供するこ
とを目的とする。The present invention is a further improvement on the above proposal. Instead of injecting the flux into the hot metal, the flux produced by plasti-ink is wrapped in the falling flow of hot metal and penetrates deeply into the hot metal of one reaction tank, thereby increasing the reaction efficiency of the hot metal. The purpose of the present invention is to provide a processing device for hot metal that can process hot metal.
【課題を解決するための手段Ｊ
本発明は以上の目的を達成するために、溶銑樋排出端に
段差を設け、この段差の下流に反応槽を連設し、この段
差部に前記溶銑樋からの溶銑流を前記反応槽の底まで案
内する案内樋を設け、この案内樋上端には溶銑の落下流
横断面中心に向って溶銑を流入させる複数の溶銑流入口
を設け、これらの溶銑流入口はそれぞれ案内樋内落下流
の横断面中心に向って溶銑流を流入し合流させる位置に
配設すると共に、流入溶銑流の合流部に溶銑処理用フラ
ックスを添加する添加装置の供給口を配設したことを特
徴としている。[Means for Solving the Problems J] In order to achieve the above object, the present invention provides a step at the discharge end of the molten pig iron gutter, a reaction tank is connected downstream of this step, and the hot metal gutter is connected to the step part. A guide gutter is provided to guide the flow of hot metal to the bottom of the reaction tank, and a plurality of hot metal inlets are provided at the upper end of the guide gutter to allow the hot metal to flow toward the center of the cross section of the falling flow of hot metal, and these hot metal inlets are each placed at a position where the hot metal flows flow in toward the center of the cross section of the falling flow in the guide trough and merge together, and a supply port for an addition device that adds flux for hot metal treatment is placed at the confluence of the inflowing hot metal flows. It is characterized by what it did.
〔作用１
本発明の装置ではフラックスを溶銑中に巻き込ませるの
で、フラックスが反応槽面に浮遊するスラグ中に捕らえ
られて溶銑処理に有効に利用されないというような問題
は解消される。[Operation 1] In the apparatus of the present invention, the flux is entangled in the hot metal, so the problem that the flux is trapped in the slag floating on the surface of the reaction tank and is not effectively used for hot metal treatment is solved.
［実施例１
第１図に本発明の第１の実施例の斜視図を示す。第２図
はその平面図、第３図は縦断面図である。[Embodiment 1] FIG. 1 shows a perspective view of a first embodiment of the present invention. FIG. 2 is a plan view thereof, and FIG. 3 is a longitudinal sectional view thereof.
溶銑排出口９を有する溶銑樋（の溶銑排出口９の下方に
段差３を設けて設置される反応槽２と、溶銑を前記排出
口から反応槽の底まで案内するための案内樋４と、前記
排出口９にフラックスをブラスティングするフラックス
添加装置５と、前記排出口９を囲むように設置され、こ
の排出口にブラスティングされるフラックスを溶銑で包
むように排出口に溶銑を排出するための複数の溶銑流人
口８を有するスキンマロとで構成したものである。A reaction tank 2 installed with a step 3 below the hot metal discharge port 9 of a hot metal trough having a hot metal discharge port 9, and a guide trough 4 for guiding the hot metal from the discharge port to the bottom of the reaction tank; a flux addition device 5 for blasting flux into the discharge port 9; and a flux addition device 5 installed to surround the discharge port 9 for discharging hot metal to the discharge port so as to surround the flux blasted to the discharge port with the hot metal. It is composed of a skin mallow having a plurality of hot metal flows.
溶銑樋ｌ内を流下してきた溶銑はスキンマロでスラグを
分離し、複数の溶銑流人口８がら案内樋４内に流入しこ
こで合流して案内樋内な落下する。スキンマロで分離さ
れたスラグはスラグ樋７からスラグ流１２として排出さ
れる。溶銑樋からの溶銑排出口９にフラックス添加装置
５を配設し、フラックスを添加する。複数の溶銑流人口
８は流入流が落下流断面中心に向って溶銑が合流するよ
うに配設されており、その合流部にフラックスをブラス
トするので、フラッフ又は完全に落下流中に包み込まれ
て反応槽２の底部に流入する。The hot metal flowing down in the hot metal gutter 1 separates slag by skin mallow, flows into the guide gutter 4 as a plurality of hot metal flows 8, joins there, and falls into the guide gutter. The slag separated by the skin mallow is discharged from the slag gutter 7 as a slag stream 12. A flux addition device 5 is disposed at a hot metal discharge port 9 from a hot metal trough to add flux. The plurality of hot metal flow holes 8 are arranged so that the inflow flow merges with the hot metal toward the center of the falling flow cross section, and the flux is blasted at the merged portion, so that the hot metal is not fluffed or completely wrapped in the falling flow. It flows into the bottom of the reaction tank 2.
このためフラックスの利用効率が極めて高くなる。For this reason, flux utilization efficiency is extremely high.
第４図は別の実施例の斜視図、第５図はその平面図、第
６図は縦断面図である。第４図〜第６図の参照番号は第
１図〜第３図と同じである。第４図の実施例は第１図に
比べて溶銑流人口８を３方に設け、特に溶銑樋の前方か
ら逆流する方向に落下する流入口８を設けたので落下流
中へのフラックスの包み込みが一層確実である。FIG. 4 is a perspective view of another embodiment, FIG. 5 is a plan view thereof, and FIG. 6 is a longitudinal sectional view thereof. Reference numbers in FIGS. 4-6 are the same as in FIGS. 1-3. In the embodiment shown in Fig. 4, compared to Fig. 1, the hot metal flow population 8 is provided on three sides, and in particular, the inlet 8 that falls from the front of the hot metal gutter in the direction of the reverse flow is provided, so that the flux is enveloped in the falling flow. is more certain.
［発明の効果１
本発明の装置によれば、添加するフラックスを流下する
溶銑流中に包み込んで反応槽の浴内の深くに供給するこ
とができ、フラックスを最高の効率で予備処理に利用す
ることができる。[Effect of the invention 1] According to the apparatus of the present invention, the flux to be added can be encapsulated in the flowing hot metal stream and supplied deep into the bath of the reaction tank, and the flux can be used for pretreatment with the highest efficiency. be able to.
第１図は本発明の実流例の斜視図、第２図はその平面図
、第３図はその縦断面図、第４図は別の実施例の斜視図
、第５図はその平面図、第６図はその縦断面図である。
１・・・溶銑樋、２・・・反応槽、３・・・段差、４・
・・案内樋、５・・・フラックス添加装置、６・・・ス
キンマ、７・・・スラグ樋、８・・・溶銑流入口、９・
・・溶銑排出口、１０・・・流入流、１１・・・落下流
、１２・・・スラブ流Fig. 1 is a perspective view of an actual flow example of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a vertical sectional view thereof, Fig. 4 is a perspective view of another embodiment, and Fig. 5 is a plan view thereof. , FIG. 6 is a longitudinal sectional view thereof. 1... Hot metal trough, 2... Reaction tank, 3... Step, 4...
...Guidance trough, 5...Flux addition device, 6...Skinner, 7...Slag gutter, 8...Hot metal inlet, 9.
... Hot metal discharge port, 10 ... Inflow flow, 11 ... Falling flow, 12 ... Slab flow
Claims (1)
を連設し、該段差部に前記溶銑樋からの溶銑流を前記反
応槽の底まで案内する案内樋を設け、該案内樋上端には
溶銑樋から溶銑が落下する複数の溶銑流入口を設け、該
溶銑流入口はそれぞれ溶銑を案内樋内落下流の横断面中
心に向って流入して合流させる位置に配設すると共に、
該流入溶銑流の合流部に溶銑処理用フラックス添加装置
の供給口を配設したことを特徴とする高炉鋳床における
溶銑の処理装置。1 A step is provided at the hot metal gutter discharge end, a reaction tank is connected downstream of the step, a guide gutter is provided at the step portion to guide the hot metal flow from the hot metal gutter to the bottom of the reaction tank, and a guide gutter is provided above the guide gutter. A plurality of hot metal inlets are provided at the end through which the hot metal falls from the hot metal gutter, and each of the hot metal inlets is arranged at a position where the hot metal flows toward the center of the cross section of the falling flow in the guide gutter and merges,
A processing device for hot metal in a blast furnace casthouse, characterized in that a supply port for a flux addition device for hot metal processing is arranged at a confluence of the inflowing hot metal flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20562589A JPH0372013A (en) | 1989-08-10 | 1989-08-10 | Device for treating molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20562589A JPH0372013A (en) | 1989-08-10 | 1989-08-10 | Device for treating molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0372013A true JPH0372013A (en) | 1991-03-27 |
Family
ID=16509987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20562589A Pending JPH0372013A (en) | 1989-08-10 | 1989-08-10 | Device for treating molten iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0372013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007149855A (en) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | Electronic device |
-
1989
- 1989-08-10 JP JP20562589A patent/JPH0372013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007149855A (en) * | 2005-11-25 | 2007-06-14 | Toshiba Corp | Electronic device |
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