FR2094453A6 - Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels - Google Patents

Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels

Info

Publication number
FR2094453A6
FR2094453A6 FR7023010A FR7023010A FR2094453A6 FR 2094453 A6 FR2094453 A6 FR 2094453A6 FR 7023010 A FR7023010 A FR 7023010A FR 7023010 A FR7023010 A FR 7023010A FR 2094453 A6 FR2094453 A6 FR 2094453A6
Authority
FR
France
Prior art keywords
tuyere
blast
restriction
furnace tuyere
wind flow
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
Application number
FR7023010A
Other languages
French (fr)
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.)
Compagnie Francaise de Raffinage SA
Wendel Sidelor SA
Original Assignee
Compagnie Francaise de Raffinage SA
Wendel Sidelor SA
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 Compagnie Francaise de Raffinage SA, Wendel Sidelor SA filed Critical Compagnie Francaise de Raffinage SA
Priority to FR7023010A priority Critical patent/FR2094453A6/en
Priority to DE19712129623 priority patent/DE2129623A1/en
Priority to IT2597771A priority patent/IT984885B/en
Priority to BE768798A priority patent/BE768798R/en
Priority to LU63382D priority patent/LU63382A1/xx
Priority to AU30249/71A priority patent/AU3024971A/en
Priority to DD15598071A priority patent/DD94830A5/xx
Priority to NL7108587A priority patent/NL7108587A/xx
Application granted granted Critical
Publication of FR2094453A6 publication Critical patent/FR2094453A6/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

The circular cross section of a blast furnace tuyere is varied from entry to exit along its length. It decreases sharply at the front end to about half the normal diameter, and then widens out more gradually until, about half way along, there is a step which connects it to the normal diameter. The constriction, which is built entirely from the upper part of the tuyere, leaves the cross section circular at every point. It increases the velocity of the air passing through it and leads to better atomising and mixing of injected fuels. These are burned more efficiently and the production of soot and its deposition on the walls of the tuyere is considerably reduced. The tuyere is cooled in the normal way by means of a water jacket.
FR7023010A 1970-06-22 1970-06-22 Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels Expired FR2094453A6 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7023010A FR2094453A6 (en) 1970-06-22 1970-06-22 Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels
DE19712129623 DE2129623A1 (en) 1970-06-22 1971-06-15 Device for operating shaft ovens
IT2597771A IT984885B (en) 1970-06-22 1971-06-17 PERFECTED OVEN BLOWER PROCESS AND DEVICE FOR THE START-UP OF THIS PROCESS
BE768798A BE768798R (en) 1970-06-22 1971-06-21 PERFECTED PROCESS FOR BLOWING OVENS AND DEVICE FOR IMPLEMENTING THE
LU63382D LU63382A1 (en) 1970-06-22 1971-06-21
AU30249/71A AU3024971A (en) 1970-06-22 1971-06-21 Improved process for blowing furnaces and device for putting the process into effect
DD15598071A DD94830A5 (en) 1970-06-22 1971-06-22
NL7108587A NL7108587A (en) 1970-06-22 1971-06-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7023010A FR2094453A6 (en) 1970-06-22 1970-06-22 Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels

Publications (1)

Publication Number Publication Date
FR2094453A6 true FR2094453A6 (en) 1972-02-04

Family

ID=9057585

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7023010A Expired FR2094453A6 (en) 1970-06-22 1970-06-22 Blast-furnace tuyere - with restriction to speed wind flow and improve combustion of injected fuels

Country Status (8)

Country Link
AU (1) AU3024971A (en)
BE (1) BE768798R (en)
DD (1) DD94830A5 (en)
DE (1) DE2129623A1 (en)
FR (1) FR2094453A6 (en)
IT (1) IT984885B (en)
LU (1) LU63382A1 (en)
NL (1) NL7108587A (en)

Also Published As

Publication number Publication date
BE768798R (en) 1971-12-21
DE2129623A1 (en) 1971-12-30
DD94830A5 (en) 1973-01-05
AU3024971A (en) 1973-01-04
NL7108587A (en) 1971-12-24
IT984885B (en) 1974-11-20
LU63382A1 (en) 1971-09-21

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