FR2040708A5 - Treating iron minerals in a blast furnace - Google Patents

Treating iron minerals in a blast furnace

Info

Publication number
FR2040708A5
FR2040708A5 FR6911049A FR6911049A FR2040708A5 FR 2040708 A5 FR2040708 A5 FR 2040708A5 FR 6911049 A FR6911049 A FR 6911049A FR 6911049 A FR6911049 A FR 6911049A FR 2040708 A5 FR2040708 A5 FR 2040708A5
Authority
FR
France
Prior art keywords
gas
blast furnace
indirect reduction
hearth
oxygen
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
FR6911049A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR6911049A priority Critical patent/FR2040708A5/en
Application granted granted Critical
Publication of FR2040708A5 publication Critical patent/FR2040708A5/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
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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

Iron mineral is treated in the crude molten state in a blast furnace by the usual combustibles and oxygen which is blown into the hearth by common tubes with the recycle gas obtained from the throat gas, by producing in the hearth of the blast furnace, only from the combustible and the oxygen, the quantity of reducing gas consumed later in the complete indirect reduction, recovering the total quantity of gas leaving the furnace throat, consumed in part in the complete indirect reduction, and leading it to a gas separator in which the gaseous volume consumed in the complete indirect reduction, which is equal to that created in the hearth from the combustibles, is extracted from the throat gas, and introducing the quantity of unconsumed reducing gas thus obtained with the oxygen by common tubes into the blast furnace, as recycle gas for the formation of the excess of gas necessary for a complete indirect reduction, and for the production of the quantity of gas required for sufficient thermal treatment.
FR6911049A 1969-04-10 1969-04-10 Treating iron minerals in a blast furnace Expired FR2040708A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6911049A FR2040708A5 (en) 1969-04-10 1969-04-10 Treating iron minerals in a blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6911049A FR2040708A5 (en) 1969-04-10 1969-04-10 Treating iron minerals in a blast furnace

Publications (1)

Publication Number Publication Date
FR2040708A5 true FR2040708A5 (en) 1971-01-22

Family

ID=9032169

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6911049A Expired FR2040708A5 (en) 1969-04-10 1969-04-10 Treating iron minerals in a blast furnace

Country Status (1)

Country Link
FR (1) FR2040708A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207990A1 (en) * 1972-11-25 1974-06-21 Nippon Kokan Kk
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2207990A1 (en) * 1972-11-25 1974-06-21 Nippon Kokan Kk
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

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Legal Events

Date Code Title Description
ST Notification of lapse