JPS64214A - Lance for injecting powdery material - Google Patents
Lance for injecting powdery materialInfo
- Publication number
- JPS64214A JPS64214A JP15443287A JP15443287A JPS64214A JP S64214 A JPS64214 A JP S64214A JP 15443287 A JP15443287 A JP 15443287A JP 15443287 A JP15443287 A JP 15443287A JP S64214 A JPS64214 A JP S64214A
- Authority
- JP
- Japan
- Prior art keywords
- lance
- powdery material
- outer cylinder
- wear resistant
- injecting
- 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
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE: To improve service life of a lance for injecting powdery material and to improve operational ratio by arranging inner cylinder for injecting powdery material made to wear resistant material as exchangeable to inside of water cooling type outer cylinder coating with heat resistant and wear resistant material at top part thereof.
CONSTITUTION: The powdery material is injected to molten iron through water cooling type lance 1 for powdery material in the casting floor in a blast furnace to execute pretreatment. The outer cylinder 10 of the lance 1 is constituted by outer tube 11, intermediate tube 12 and inner tube 13, and inner and outer sides of the intermediate tube 12 are connected with each inlet 25 and outlet 26 for cooling water to execute water cooling. Further, the tip of the outer cylinder 10 is coated with the heat resistant and wear resistant material 15 of Ni-Cr series, etc. In the inside of the outer cylinder 10, the inner cylinder 14 for injecting powdery material composing to the wear resistant material of stainless steel, etc. By this method, splash is difficult to stick to the tip of the lance 1 and wear, deformation, bending, etc., are scarcely developed and the reaction efficiency having high level can be stably obtd.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15443287A JPS64214A (en) | 1987-06-23 | 1987-06-23 | Lance for injecting powdery material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15443287A JPS64214A (en) | 1987-06-23 | 1987-06-23 | Lance for injecting powdery material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01214A JPH01214A (en) | 1989-01-05 |
| JPS64214A true JPS64214A (en) | 1989-01-05 |
Family
ID=15584056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15443287A Pending JPS64214A (en) | 1987-06-23 | 1987-06-23 | Lance for injecting powdery material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64214A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754031A (en) * | 1993-08-11 | 1995-02-28 | Kawasaki Steel Corp | Lance for changing raw material |
| CN100424192C (en) * | 2006-03-23 | 2008-10-08 | 武汉钢铁(集团)公司 | Self-cooling iron liquid pretreating spray gun |
-
1987
- 1987-06-23 JP JP15443287A patent/JPS64214A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754031A (en) * | 1993-08-11 | 1995-02-28 | Kawasaki Steel Corp | Lance for changing raw material |
| CN100424192C (en) * | 2006-03-23 | 2008-10-08 | 武汉钢铁(集团)公司 | Self-cooling iron liquid pretreating spray gun |
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