JPS64214A - Lance for injecting powdery material - Google Patents

Lance for injecting powdery material

Info

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
Application number
JP15443287A
Other languages
Japanese (ja)
Other versions
JPH01214A (en
Inventor
Shigeki Furuya
Sumiyuki Kishimoto
Masaro Izumi
Fumoto Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP62-154432A priority Critical patent/JPH01214A/en
Priority claimed from JP62-154432A external-priority patent/JPH01214A/en
Publication of JPS64214A publication Critical patent/JPS64214A/en
Publication of JPH01214A publication Critical patent/JPH01214A/en
Pending legal-status Critical Current

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
JP62-154432A 1987-06-23 powder projection lance Pending JPH01214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154432A JPH01214A (en) 1987-06-23 powder projection lance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154432A JPH01214A (en) 1987-06-23 powder projection lance

Publications (2)

Publication Number Publication Date
JPS64214A true JPS64214A (en) 1989-01-05
JPH01214A JPH01214A (en) 1989-01-05

Family

ID=

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0754031A (en) * 1993-08-11 1995-02-28 Kawasaki Steel Corp Lance for feeding raw materials
CN100424192C (en) * 2006-03-23 2008-10-08 武汉钢铁(集团)公司 Self-cooling iron liquid pretreating spray gun

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0754031A (en) * 1993-08-11 1995-02-28 Kawasaki Steel Corp Lance for feeding raw materials
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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