JPH01125352U - - Google Patents
Info
- Publication number
- JPH01125352U JPH01125352U JP2215388U JP2215388U JPH01125352U JP H01125352 U JPH01125352 U JP H01125352U JP 2215388 U JP2215388 U JP 2215388U JP 2215388 U JP2215388 U JP 2215388U JP H01125352 U JPH01125352 U JP H01125352U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- sectional
- lance
- view
- auxiliary
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 238000007670 refining Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
第１図は、本考案にかかる転炉吹錬用ランスノ
ズルの一実施例を示す断面図であつて、図Ａは図
Ｂのａ−ａ線横断面図、図Ｂは図Ａのｂ−ｂ線縦
断面図、第２図は、本考案のランスノズルに窒素
ガスを使用し、大気中に吹き込んだときの酸素巻
き込み量を測定した実験結果を示したもので、補
助ノズルの窒素流量とＣｏ／Ｃｍとの関係でまと
めたグラフ、第３図は、１５ｔ上下吹転炉の上吹
ランスに本考案のランスノズルを用いて、１０ｔ
の脱Ｐ銑を溶融還元したときの実験結果を示した
ものであつて、補助ノズルの酸素流量と二次燃焼
比率との関係でまとめたグラフ、第４図は、副ノ
ズルを有する従来の転炉吹錬用ランスノズルであ
つて、図Ａは横断面図、図Ｂは図ＡのＣ−Ｃ線断
面図、第５図は、従来の先拡がり形状の急拡大管
ノズルを示す概略断面図、である。
１……ランスノズル、２……吹き込み孔、３…
…ラバールノズル、４……補助ノズル、５……酸
素流路、６……冷却水路、７……吹き込み孔。
FIG. 1 is a sectional view showing an embodiment of a lance nozzle for converter blowing according to the present invention, in which FIG. A is a cross-sectional view taken along line a-a in FIG. Figure 2, a vertical cross-sectional view along line b, shows the experimental results of measuring the amount of oxygen entrained when nitrogen gas was blown into the atmosphere using the lance nozzle of the present invention. Figure 3 is a graph summarized in relation to Co/Cm.
Figure 4 shows the experimental results when dephosphorized pig iron was melted and reduced, and is a graph summarized in terms of the relationship between the oxygen flow rate of the auxiliary nozzle and the secondary combustion ratio. Figure A is a cross-sectional view of a lance nozzle for furnace blowing, Figure B is a cross-sectional view taken along the line CC in Figure A, and Figure 5 is a schematic cross-sectional view showing a conventional rapidly expanding tube nozzle with a flared tip. , is. 1...Lance nozzle, 2...Blow hole, 3...
... Laval nozzle, 4 ... auxiliary nozzle, 5 ... oxygen flow path, 6 ... cooling waterway, 7 ... blowing hole.
Claims (1)
補助ノズルを備えた転炉吹錬用ランスノズルであ
つて、該補助ノズル先端の酸素吹き込み孔がラバ
ールノズルの酸素ジエツト吹き込み孔と対応して
設置されていることを特徴とする転炉吹錬用ラン
スノズル。 A lance nozzle for converter blowing which is equipped with an auxiliary nozzle for secondary combustion inside a Laval nozzle for refining, wherein the oxygen injection hole at the tip of the auxiliary nozzle is installed to correspond to the oxygen injection hole of the Laval nozzle. A lance nozzle for converter blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2215388U JPH01125352U (en) | 1988-02-22 | 1988-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2215388U JPH01125352U (en) | 1988-02-22 | 1988-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01125352U true JPH01125352U (en) | 1989-08-25 |
Family
ID=31240011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2215388U Pending JPH01125352U (en) | 1988-02-22 | 1988-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01125352U (en) |
-
1988
- 1988-02-22 JP JP2215388U patent/JPH01125352U/ja active Pending
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