FR2098026A5 - Injecting hot reducing gas into a blast furn- - ace - Google Patents

Injecting hot reducing gas into a blast furn- - ace

Info

Publication number
FR2098026A5
FR2098026A5 FR7123176A FR7123176A FR2098026A5 FR 2098026 A5 FR2098026 A5 FR 2098026A5 FR 7123176 A FR7123176 A FR 7123176A FR 7123176 A FR7123176 A FR 7123176A FR 2098026 A5 FR2098026 A5 FR 2098026A5
Authority
FR
France
Prior art keywords
gas
furn
ace
blast
reducing gas
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
FR7123176A
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Application granted granted Critical
Publication of FR2098026A5 publication Critical patent/FR2098026A5/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21B5/002—Heated electrically (plasma)

Landscapes

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

Abstract

The gas, used instead of air, may be CO/H2/N2 opt. with small quantities of CO2 and/or H2O. The temp. and quantity of the gas are selected according to the thermal requirements of the furnace and the analysis and temp. of the metal, alloy, matte, or speiss to be treated. Pref. the gas may be preheated e.g. to 1700-2400 degrees C e.g. by heat exchanger and/or electricity. The heat of the gas may be regulated by simultaneous heating or cooling injections, e.g. of hotter or cooler reducing gas, or by a mixture of oxidising and reducing substances reacting together to give CO, H2, and N2. Coke consumption is reduced especially by combustion at the tuyeres and cooling produced by cracking when hydrocarbons are injected is avoided.
FR7123176A 1970-06-30 1971-06-22 Injecting hot reducing gas into a blast furn- - ace Expired FR2098026A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE752793 1970-06-30
BE756555 1970-09-23

Publications (1)

Publication Number Publication Date
FR2098026A5 true FR2098026A5 (en) 1972-03-03

Family

ID=25656836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7123176A Expired FR2098026A5 (en) 1970-06-30 1971-06-22 Injecting hot reducing gas into a blast furn- - ace

Country Status (1)

Country Link
FR (1) FR2098026A5 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2519526A1 (en) * 1974-05-10 1975-11-20 Metallurg Cerum Voor Research PROCESS FOR PRODUCING HOT REDUCING GASES
FR2396253A1 (en) * 1977-07-01 1979-01-26 Southwire Co VERTICAL TANK AND PLASMA ARC OVEN
FR2483951A1 (en) * 1980-06-05 1981-12-11 Centre Rech Metallurgique PROCESS FOR CONDUCTING THE HIGH STOVE
FR2486962A1 (en) * 1980-07-15 1982-01-22 Siderurgie Fse Inst Rech Lowering reducing agent consumption in smelting furnaces - esp. blast furnaces, by using recycled off-gas instead of conventional blast
FR2499590A2 (en) * 1980-07-15 1982-08-13 Siderurgie Fse Inst Rech Blast furnace coke rate redn. - by replacing blast by recycled top gas after purging to prevent oxygen build=up
FR2500478A2 (en) * 1980-07-15 1982-08-27 Siderurgie Fse Inst Rech Cast iron mfr. in blast furnace - using spent gas freed of carbon di:oxide as blast, with some ore injected with blast
FR2515326A1 (en) * 1981-10-22 1983-04-29 Skf Steel Eng Ab METHOD AND APPARATUS FOR HEATING PROCESSING AIR FOR INDUSTRIAL PURPOSES

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2519526A1 (en) * 1974-05-10 1975-11-20 Metallurg Cerum Voor Research PROCESS FOR PRODUCING HOT REDUCING GASES
FR2396253A1 (en) * 1977-07-01 1979-01-26 Southwire Co VERTICAL TANK AND PLASMA ARC OVEN
FR2483951A1 (en) * 1980-06-05 1981-12-11 Centre Rech Metallurgique PROCESS FOR CONDUCTING THE HIGH STOVE
FR2486962A1 (en) * 1980-07-15 1982-01-22 Siderurgie Fse Inst Rech Lowering reducing agent consumption in smelting furnaces - esp. blast furnaces, by using recycled off-gas instead of conventional blast
FR2499590A2 (en) * 1980-07-15 1982-08-13 Siderurgie Fse Inst Rech Blast furnace coke rate redn. - by replacing blast by recycled top gas after purging to prevent oxygen build=up
FR2500478A2 (en) * 1980-07-15 1982-08-27 Siderurgie Fse Inst Rech Cast iron mfr. in blast furnace - using spent gas freed of carbon di:oxide as blast, with some ore injected with blast
FR2515326A1 (en) * 1981-10-22 1983-04-29 Skf Steel Eng Ab METHOD AND APPARATUS FOR HEATING PROCESSING AIR FOR INDUSTRIAL PURPOSES

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Legal Events

Date Code Title Description
ST Notification of lapse