NL7511538A - Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption - Google Patents

Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption

Info

Publication number
NL7511538A
NL7511538A NL7511538A NL7511538A NL7511538A NL 7511538 A NL7511538 A NL 7511538A NL 7511538 A NL7511538 A NL 7511538A NL 7511538 A NL7511538 A NL 7511538A NL 7511538 A NL7511538 A NL 7511538A
Authority
NL
Netherlands
Prior art keywords
calorized
tuyere
blast furnace
working surfaces
furnace tuyere
Prior art date
Application number
NL7511538A
Other languages
Dutch (nl)
Original Assignee
Sumitomo Metal Ind
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 Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Priority to NL7511538A priority Critical patent/NL7511538A/en
Publication of NL7511538A publication Critical patent/NL7511538A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The bore and outside surface of the tuyere are coated by calorizing and the inside surfaces of the cooling jacket may also be calorized if required. The coatings are pref. obtd. by the diffusion of a mixt. of Al and active Al2O3 at 800 degrees C, to form a coating of 0.5-5 mm on the inner and outer surfaces of the tuyere, and 0.1-1 mm on the inside surfaces of the cooling jacket. Prevents the deposition of molten metal and/or slag on the surface of the tuyere and also the erosion of the cooling jacket due to the high velocity of the cooling water. The result is an increase in the working life of the tuyere.
NL7511538A 1975-09-30 1975-09-30 Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption NL7511538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7511538A NL7511538A (en) 1975-09-30 1975-09-30 Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7511538A NL7511538A (en) 1975-09-30 1975-09-30 Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption

Publications (1)

Publication Number Publication Date
NL7511538A true NL7511538A (en) 1977-04-01

Family

ID=19824565

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7511538A NL7511538A (en) 1975-09-30 1975-09-30 Blast furnace tuyere with calorized working surfaces - which permit higher wind temp. and reduce coke consumption

Country Status (1)

Country Link
NL (1) NL7511538A (en)

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Legal Events

Date Code Title Description
BN A decision not to publish the application has become irrevocable