JPH0243861Y2 - - Google Patents
Info
- Publication number
- JPH0243861Y2 JPH0243861Y2 JP1985003647U JP364785U JPH0243861Y2 JP H0243861 Y2 JPH0243861 Y2 JP H0243861Y2 JP 1985003647 U JP1985003647 U JP 1985003647U JP 364785 U JP364785 U JP 364785U JP H0243861 Y2 JPH0243861 Y2 JP H0243861Y2
- Authority
- JP
- Japan
- Prior art keywords
- tuyere
- lance
- tuyeres
- view
- immersion
- 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
Landscapes
- Furnace Charging Or Discharging (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、溶融金属中に粉体と気体の混合物を
吹込む浸漬ランスに関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an immersion lance for blowing a mixture of powder and gas into molten metal.
（従来の技術）
溶融金属中に粉体と気体の固気混合物を吹込む
例として、第１１図に示すように、トーピードカ
ー１に収容された溶銑２の溶融中に、浸漬ランス
３を用いて、タンク４から粉体と気体の混合物を
吹込む溶銑予備処理がある。(Prior Art) As an example of blowing a solid-gas mixture of powder and gas into molten metal, as shown in FIG. , there is hot metal pretreatment in which a mixture of powder and gas is blown from tank 4.
この時使用される浸漬ランス３は、例えば実公
昭58−37941号公報や実開昭57−150548号公報に
示されるものが多く使用されている。これら第１
２図に示すように、耐火物５を外周に巻付けたラ
ンスパイプ６の下端近くに、複数の羽口７を同一
平面内に設けたものである。 Many of the immersion lances 3 used at this time are those shown in, for example, Japanese Utility Model Publication No. 58-37941 and Japanese Utility Model Application Publication No. 57-150548. These first
As shown in FIG. 2, a plurality of tuyeres 7 are provided in the same plane near the lower end of a lance pipe 6 around which a refractory material 5 is wound.
羽口を複数個設けるのは、羽口１個当りの吹込
量を抑制することにより、ランスや溶融金属容器
の振動を軽減させることと、夫々の耐火物の寿命
を延長させるためである。 The reason why a plurality of tuyeres are provided is to reduce the vibration of the lance or molten metal container by suppressing the amount of blowing per tuyere, and to extend the life of each refractory.
又、複数の羽口を同一平面内に設けるのは、羽
口背圧のバランスを保つて、羽口への溶融金属の
差し込みや、羽口詰りの発生を防ぐためである。
即ち、羽口を高さ方向多段に配置すると、粉体は
下段に集中し、下段ノズルの粉体詰りを発生さ
せ、上段ノズルは溶融金属の差し込みが発生す
る。 Furthermore, the reason why a plurality of tuyeres are provided in the same plane is to maintain the balance of tuyere back pressure and prevent molten metal from being inserted into the tuyere and clogging the tuyere.
That is, when the tuyeres are arranged in multiple stages in the height direction, powder concentrates on the lower stage, causing powder clogging of the lower nozzle, and insertion of molten metal into the upper nozzle.
（考案が解決しようとする問題点）
本考案は、ランス振動、溶融金属容器の振動を
軽減するとともに、耐火物寿命を著しく改善する
浸漬ランスを提供するものである。(Problems to be Solved by the Invention) The present invention provides an immersion lance that reduces lance vibration and molten metal vessel vibration, and significantly improves the life of the refractory.
（問題点を解決するための手段）
本考案は前記の点に鑑み、羽口をより多く設け
て、粉体の安定吹込みを達成するものであり、以
下図面により本考案を説明する。(Means for Solving the Problems) In view of the above-mentioned points, the present invention provides a larger number of tuyeres to achieve stable powder injection.The present invention will be explained below with reference to the drawings.
第１図は本考案の浸漬ランスの１例である。第
１図は正面断面図、第２図は側面断面図、第３図
は第１図のＢ−Ｂ断面、第４図は第１図のＣ−Ｃ
断面、第５図は一部切欠きの斜視図である。 FIG. 1 shows an example of the immersion lance of the present invention. Fig. 1 is a front sectional view, Fig. 2 is a side sectional view, Fig. 3 is a BB cross section in Fig. 1, and Fig. 4 is a C-C in Fig. 1.
The cross section, FIG. 5, is a partially cutaway perspective view.
本考案は複数の羽口７−１，…７−oに対応し
て浸漬ランス内部を仕切る。即ち、浸漬ランス３
の内部を、仕切板８、底上げ板９により仕切るも
ので、仕切板８は、少なくとも浸漬ランス３の長
さ方向底部付近に設けた羽口の位置より、上方か
ら下部に向けて設けるものとし、第３図、第４図
に示すごとく、各羽口に対応し垂直方向に区分さ
れた空間ａを形成するものである。底上げ板９
は、上部に位置する羽口７−1，７−2の直下に設
ける。すなわち、仕切られた各空間ａには、それ
ぞれに対応して図示のように横方向に噴出口を有
する羽口７−１，…７−oを設ける。 The present invention partitions the interior of the immersion lance corresponding to the plurality of tuyeres 7-1,...7- o . That is, the immersion lance 3
The interior of the immersion lance is partitioned by a partition plate 8 and a bottom raising plate 9, and the partition plate 8 is provided at least from above to below the position of the tuyere provided near the bottom in the length direction of the immersion lance 3, As shown in FIGS. 3 and 4, a vertically divided space a is formed corresponding to each tuyere. Bottom raising board 9
are provided directly below the upper tuyeres 7-1 and 7-2 . That is, each partitioned space a is provided with corresponding tuyeres 7-1 , .
かくすることにより仕切られた空間ａ内の粉体
と気体の混合物は、互に流動、混り合うことな
く、夫々の羽口から溶融物中に注入添加される。
第１図に示す例では、羽口位置が上段に２個７−
１，７−2、下段に２個７−3，７−4の計４個のた
め、仕切板８は第３図、第４図に示すごとく、浸
漬ランス断面を４分割する構造としている。なお
上段に１個、下段に１個の羽口を有する構造の浸
漬ランスであれば、浸漬ランス断面を２分割する
仕切板を設ければ良い。 The mixture of powder and gas in the space a thus partitioned is injected into the melt from each tuyere without flowing or mixing with each other.
In the example shown in Fig. 1, there are two tuyere positions in the upper row 7-
1 , 7-2 and two on the lower stage, 7-3 and 7-4 , for a total of four, the partition plate 8 has a structure that divides the cross section of the immersion lance into four as shown in FIGS. 3 and 4. Note that if the immersion lance has a structure having one tuyere on the upper stage and one tuyere on the lower stage, a partition plate that divides the cross section of the immersion lance into two may be provided.
又本考案は、複数の羽口が上、下に設けられた
場合に限らず、同一平面内に設けられた形状の浸
漬ランスにも適用できる。即ち底上げ板９は設け
ず、浸漬ランス内部を羽口の数に対応した数に、
仕切板８により仕切るものである。 Furthermore, the present invention is applicable not only to cases where a plurality of tuyeres are provided above and below, but also to immersion lances having a shape in which they are provided within the same plane. In other words, the bottom raising plate 9 is not provided, and the inside of the immersion lance has a number corresponding to the number of tuyeres.
It is partitioned by a partition plate 8.
本考案は第１図に示す例の他、例えば羽口の位
置が上下２段に限らず、３段以上の場合にも適用
可能であり、更に浸漬ノズルが単管に限らず、２
重管の場合にも適用できる。 In addition to the example shown in Fig. 1, the present invention can be applied to cases where the tuyere position is not limited to two levels (upper and lower), but three or more levels, and the immersion nozzle is not limited to a single pipe, but is also applicable to two or more levels.
It can also be applied to heavy pipes.
第６図に示すものは、高さ方向に３段の羽口を
有し、かつ、２重管の場合の本考案の説明図であ
る。第６図は正面断面図、第７図は６図のＤ−Ｄ
矢視図、第８図は第６図のＥ−Ｅ断面、第９図は
第６図のＦ−Ｆ断面、第１０図は第６図のＧ−Ｇ
断面である。 What is shown in FIG. 6 is an explanatory diagram of the present invention in the case of having three stages of tuyeres in the height direction and a double pipe. Figure 6 is a front sectional view, Figure 7 is D-D in Figure 6.
View from the arrow, Figure 8 is the E-E cross section in Figure 6, Figure 9 is the F-F cross section in Figure 6, and Figure 10 is the G-G in Figure 6.
It is a cross section.
浸漬ランスを２重管とするのは、内管１０から
はCaO＋O2を供給し、外管１１からはFe2O3＋
N2を供給して、同時に異なる固体と気体の混合
物を吹込む際などに、有利に供給するためであ
り、異種の供給物は、羽口から溶融物中に注入さ
れた直後に混合し反応を起す。 The reason why the immersion lance is made of a double tube is that CaO + O 2 is supplied from the inner tube 10, and Fe 2 O 3 + is supplied from the outer tube 11.
This is for advantageous purposes, such as when supplying N 2 and simultaneously blowing mixtures of different solids and gases, where the dissimilar feeds mix and react immediately after being injected into the melt through the tuyere. wake up
羽口を３段とするのは、より多くの羽口をもつ
ことにより、羽口当りの吹込量を抑制して振動を
なくす他、全体として多量の固気混合物を吹込み
たい場合に有効である。 Having three tuyere stages is effective in suppressing the blowing amount per tuyere and eliminating vibration by having more tuyeres, and in cases where it is desired to blow in a large amount of solid-air mixture as a whole.
このような構造の浸漬ランスにおいて、本考案
を適用する場合、羽口が上、中、下段に夫々２個
ずつ、合計６個有するので、浸漬ランス断面を仕
切板８により６分割するごとく構成する。そし
て、上段羽口７−5の直下に底上げ板９−1を内管
１０、外管１１の双方に設け、中段羽口７−6の
直下には、底上げ板９−2を同様に内管、外管の
双方に設ける。 When applying the present invention to an immersion lance having such a structure, there are six tuyeres in total, two each in the upper, middle, and lower stages, so the immersion lance cross section is divided into six by the partition plate 8. . Immediately below the upper tuyere 7-5 , a bottom raising plate 9-1 is provided on both the inner pipe 10 and the outer pipe 11, and a bottom raising plate 9-2 is provided directly below the middle tuyere 7-6. , provided on both outer tubes.
（作用）
固気混合物は、浸漬ランス上方より浸漬ランス
内に入り、浸漬ランス下方へ進む。ランス下方で
は仕切板により強制的に流れが分割され、仕切ら
れた断面積に比例して、固気混合物が分配され羽
口から吹き出る。(Operation) The solid-gas mixture enters the immersion lance from above the immersion lance and proceeds below the immersion lance. Below the lance, the flow is forcibly divided by a partition plate, and the solid-gas mixture is distributed and blown out from the tuyeres in proportion to the partitioned cross-sectional area.
このことにより、複数羽口において各羽口に所
要吹込量を供給することが出来る。本考案のラン
スでは、多段に羽口を設けることが出来ることか
ら、羽口数に制約はない。 This makes it possible to supply the required blowing amount to each tuyere in a plurality of tuyeres. In the lance of the present invention, tuyeres can be provided in multiple stages, so there is no restriction on the number of tuyeres.
（考案の効果）
本考案により、粉体吸込み浸漬ランスの多段複
数羽口化が可能となり、吹込物がバランスのとれ
た分散により、ランス振動が軽減出来、かつ、溶
融金属湯面の変動が抑制され、容器の振動も軽減
出来る。又、同様の理由から、ランス及び容器の
耐火物寿命が延長出来る。以上の効果は、溶銑予
備処理コスト低減が大きく寄与する。(Effects of the invention) This invention enables the powder suction immersion lance to have multiple tuyeres in multiple stages, and the balanced dispersion of the blown material reduces lance vibration and suppresses fluctuations in the molten metal level. This also reduces the vibration of the container. Also, for the same reason, the life of the refractories of the lance and container can be extended. The above effects are largely due to the reduction in hot metal pretreatment costs.
第１図は本考案の正面断面図、第２図は側面断
面図、第３図は第１図のＢ−Ｂ断面図、第４図は
第１図のＣ−Ｃ断面図、第５図は一部切欠き斜視
図、第６図は本考案の他の例の正面断面図、第７
図は第６図のＤ−Ｄ矢視図、第８図は第６図のＥ
−Ｅ断面図、第９図は第６図のＦ−Ｆ断面図、第
１０図は第６図のＧ−Ｇ断面図、第１１図は従来
例の模式図、第１２図イは従来例の正面断面図、
ロは部分側面断面図、ハはイのＡ−Ａ矢視図であ
る。
１；トーピードカー、２；溶銑、３；浸漬ラン
ス、４；タンク、５；耐火物、６；ランスパイ
プ、７−1，７−2，７−3，７−4；羽口、７−5；
上段羽口、７−6；中段羽口、７−7；下段羽口、
８；仕切板、９−1，９−2；底上げ板、１０；内
管、１２；外管。
Figure 1 is a front sectional view of the present invention, Figure 2 is a side sectional view, Figure 3 is a BB sectional view in Figure 1, Figure 4 is a CC sectional view in Figure 1, and Figure 5. 6 is a partially cutaway perspective view, FIG. 6 is a front sectional view of another example of the present invention, and FIG. 7 is a partially cutaway perspective view.
The figure is a view taken from arrow D-D in Figure 6, and Figure 8 is a view of E in Figure 6.
-E sectional view, Fig. 9 is a FF sectional view in Fig. 6, Fig. 10 is a GG sectional view in Fig. 6, Fig. 11 is a schematic diagram of a conventional example, and Fig. 12 A is a conventional example. Front sectional view of
B is a partial side cross-sectional view, and C is a view taken along the line A-A of A. 1; Torpedo car, 2; Hot metal, 3; Immersion lance, 4; Tank, 5; Refractory, 6; Lance pipe, 7-1 , 7-2 , 7-3 , 7-4 ; Tuyere, 7-5 ;
Upper tuyere, 7-6 ; Middle tuyere, 7-7 ; Lower tuyere,
8; Partition plate, 9-1 , 9-2 ; Bottom raising plate, 10; Inner tube, 12; Outer tube.
Claims (1)
ランスにおいて、浸漬ランス３の内部を仕切り板
８により複数の空間ａに仕切るとともに、それぞ
れの仕切られた空間ａに横方向に噴出口を有する
羽口７−１，…７−oを設けたことを特徴とする
粉体吹込ランス。 In an immersion lance in which a plurality of tuyeres are provided near the tip of the immersion lance, the interior of the immersion lance 3 is partitioned into a plurality of spaces a by a partition plate 8, and each partitioned space a has a tuyere in the lateral direction. A powder injection lance characterized by having ports 7-1,...7- o .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985003647U JPH0243861Y2 (en) | 1985-01-17 | 1985-01-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985003647U JPH0243861Y2 (en) | 1985-01-17 | 1985-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61120748U JPS61120748U (en) | 1986-07-30 |
| JPH0243861Y2 true JPH0243861Y2 (en) | 1990-11-21 |
Family
ID=30478474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985003647U Expired JPH0243861Y2 (en) | 1985-01-17 | 1985-01-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243861Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5340533B2 (en) * | 2006-11-13 | 2013-11-13 | 東京窯業株式会社 | Lance pipe |
| JP5332487B2 (en) * | 2008-10-15 | 2013-11-06 | Ｊｆｅスチール株式会社 | Hot metal desiliconization method |
| KR101400050B1 (en) * | 2012-06-28 | 2014-05-28 | 현대제철 주식회사 | Top blow lance for processing of steelmaking |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160554U (en) * | 1983-04-11 | 1984-10-27 | 三菱重工業株式会社 | Powder injection pipe into molten metal |
-
1985
- 1985-01-17 JP JP1985003647U patent/JPH0243861Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61120748U (en) | 1986-07-30 |
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