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FR2190922A1 - Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne - Google Patents

Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne

Info

Publication number
FR2190922A1
FR2190922A1 FR7224237A FR7224237A FR2190922A1 FR 2190922 A1 FR2190922 A1 FR 2190922A1 FR 7224237 A FR7224237 A FR 7224237A FR 7224237 A FR7224237 A FR 7224237A FR 2190922 A1 FR2190922 A1 FR 2190922A1
Authority
FR
France
Prior art keywords
gases
charge
tonne
kwh
tion
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
FR7224237A
Other languages
French (fr)
Other versions
FR2190922B1 (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.)
Creusot Loire SA
Original Assignee
Creusot Loire 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 Creusot Loire SA filed Critical Creusot Loire SA
Priority to FR7224237A priority Critical patent/FR2190922A1/en
Publication of FR2190922A1 publication Critical patent/FR2190922A1/en
Application granted granted Critical
Publication of FR2190922B1 publication Critical patent/FR2190922B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

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

Process comprises (a) oxidant preheating at 750-1300 degrees C of a seived graded charge e. iron bearing ores, sinter or pellets opt with fondants, (b) homogeneously mixing the preheated charge with a solid carbon reducing agent pref. cold seived coke, (c) introducing the total charge into >=1 sealed vertical pretreatment furnace (I) which continuously feeds the electric furnace, (II), (d) lowering the charge in (I) in counter-current to hot reducing gases from (II) (e) injecting finely-divided air into the upper part of (I) to ensure neutral combustion of the gases which have somewhat prereduced the material in the lower part of (I), (f) evacuating and aspirating burnt gases so that the press of gases at the vault of (II) is constantly adjusted to a value close to that of the ambient atmos, and (g) injecting hydrocarbons opt. with O2 into the axis of Soderberg electrodes in (II) and close to their ends to obt. suitable qualities and quantities of reducing gases.
FR7224237A 1972-07-05 1972-07-05 Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne Granted FR2190922A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7224237A FR2190922A1 (en) 1972-07-05 1972-07-05 Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7224237A FR2190922A1 (en) 1972-07-05 1972-07-05 Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne

Publications (2)

Publication Number Publication Date
FR2190922A1 true FR2190922A1 (en) 1974-02-01
FR2190922B1 FR2190922B1 (en) 1974-10-25

Family

ID=9101365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7224237A Granted FR2190922A1 (en) 1972-07-05 1972-07-05 Electric smelting furnace for iron ores sinter etc - reduces power consump-tion eg to 1000 to 1500 KWH/tonne

Country Status (1)

Country Link
FR (1) FR2190922A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583126A1 (en) * 1992-08-11 1994-02-16 Mintek The production of high titania slag from ilmenite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1226532A (en) * 1959-02-14 1960-07-13 Siderurgie Fse Inst Rech Process for producing liquid metal in an electric blast furnace, by preheating on a grid
US3269827A (en) * 1962-03-08 1966-08-30 Elektrokemisk As Process for preheating the charge to an electric smelting furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1226532A (en) * 1959-02-14 1960-07-13 Siderurgie Fse Inst Rech Process for producing liquid metal in an electric blast furnace, by preheating on a grid
US3269827A (en) * 1962-03-08 1966-08-30 Elektrokemisk As Process for preheating the charge to an electric smelting furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583126A1 (en) * 1992-08-11 1994-02-16 Mintek The production of high titania slag from ilmenite

Also Published As

Publication number Publication date
FR2190922B1 (en) 1974-10-25

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Legal Events

Date Code Title Description
ST Notification of lapse