FR2154324A1 - Controlling blast flow rate - by injecting secondary gas at tuyere outlet end - Google Patents

Controlling blast flow rate - by injecting secondary gas at tuyere outlet end

Info

Publication number
FR2154324A1
FR2154324A1 FR7135081A FR7135081A FR2154324A1 FR 2154324 A1 FR2154324 A1 FR 2154324A1 FR 7135081 A FR7135081 A FR 7135081A FR 7135081 A FR7135081 A FR 7135081A FR 2154324 A1 FR2154324 A1 FR 2154324A1
Authority
FR
France
Prior art keywords
flow rate
tuyere
secondary gas
outlet end
blast 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.)
Granted
Application number
FR7135081A
Other languages
French (fr)
Other versions
FR2154324B1 (en
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 FR7135081A priority Critical patent/FR2154324A1/en
Publication of FR2154324A1 publication Critical patent/FR2154324A1/en
Application granted granted Critical
Publication of FR2154324B1 publication Critical patent/FR2154324B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/08—Influencing flow of fluids of jets leaving an orifice
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)

Abstract

In regulating the flow conditions of >=1 primary gas at the outlet section of a tuyere, >=1 secondary gas is injected, pref. perpendicular to the direction of the primary gas, close to the downstream end of the tuyere. The arrangement ensures that the flow rate of the blast at the tuyere outlet is held at a given value whatever amt. of fuel may be added to the blast.
FR7135081A 1971-09-29 1971-09-29 Controlling blast flow rate - by injecting secondary gas at tuyere outlet end Granted FR2154324A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7135081A FR2154324A1 (en) 1971-09-29 1971-09-29 Controlling blast flow rate - by injecting secondary gas at tuyere outlet end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7135081A FR2154324A1 (en) 1971-09-29 1971-09-29 Controlling blast flow rate - by injecting secondary gas at tuyere outlet end

Publications (2)

Publication Number Publication Date
FR2154324A1 true FR2154324A1 (en) 1973-05-11
FR2154324B1 FR2154324B1 (en) 1975-07-18

Family

ID=9083665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7135081A Granted FR2154324A1 (en) 1971-09-29 1971-09-29 Controlling blast flow rate - by injecting secondary gas at tuyere outlet end

Country Status (1)

Country Link
FR (1) FR2154324A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360202A (en) * 1991-07-10 1994-11-01 Chugai Ro Co., Ltd. Blackening Treating furnace for treating stainless steel strip surface
EP2064120A1 (en) * 2006-08-24 2009-06-03 Jet Stick Limited Fluid amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360202A (en) * 1991-07-10 1994-11-01 Chugai Ro Co., Ltd. Blackening Treating furnace for treating stainless steel strip surface
EP2064120A1 (en) * 2006-08-24 2009-06-03 Jet Stick Limited Fluid amplifier
EP2064120A4 (en) * 2006-08-24 2011-09-21 Jet Stick Ltd Fluid amplifier

Also Published As

Publication number Publication date
FR2154324B1 (en) 1975-07-18

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Legal Events

Date Code Title Description
ST Notification of lapse