GB846284A - Improvements in and relating to the production of sponge iron - Google Patents

Improvements in and relating to the production of sponge iron

Info

Publication number
GB846284A
GB846284A GB634/57A GB63457A GB846284A GB 846284 A GB846284 A GB 846284A GB 634/57 A GB634/57 A GB 634/57A GB 63457 A GB63457 A GB 63457A GB 846284 A GB846284 A GB 846284A
Authority
GB
United Kingdom
Prior art keywords
gas
furnace
zone
reducing
hydrogen
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
GB634/57A
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.)
Norsk Hydro Elektrisk Kvaelstof AS
Original Assignee
Norsk Hydro Elektrisk Kvaelstof AS
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 Norsk Hydro Elektrisk Kvaelstof AS filed Critical Norsk Hydro Elektrisk Kvaelstof AS
Publication of GB846284A publication Critical patent/GB846284A/en
Expired 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
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C21B13/023—Making spongy iron or liquid steel, by direct processes in shaft furnaces wherein iron or steel is obtained in a molten state
    • C21B13/026—Making spongy iron or liquid steel, by direct processes in shaft furnaces wherein iron or steel is obtained in a molten state heated electrically
    • 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
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • 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
    • 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
    • Y02P10/20—Recycling

Abstract

846,284. Reducing iron ores. NORSKHYDRO-ELEKTRISK KVAELSTOFAKTIESELSKAB. Jan. 7, 1957 [Jan. 7, 1956; Sept. 22, 1956], No. 634/57. Class 72 A process for the reduction of iron ore, which has a tendency to disintegrate during reduction, by hydrogen or hydrogen and carbon monoxide in an electric resistance furnace wherein some of the sponge iron produced is returned to the top of the furnace, comprises introducing the cold reducing gas, containing at least 90% hydrogen calculated on the reducing components of the gas, at the bottom of the furnace and supplying electrical energy to three electrodes in such manner that the zone between the lower pair serves for heating the gas to the reduction temperature. As shown, water gas mixed with recirculated gas is cleaned, compressed and expanded and supplied to the bottom of a furnace 4 having three electrodes 13, 14, 15, the zone between 13 and 14 being a heating zone to raise the temperature of the reducing gas to 900‹C., and the zone between the electrodes 14 and 15 being the reducing zone. The gas leaving the top of the furnace may have a content of steam and carbon dioxide of less than 35% and some water may be added with the ore and recirculated sponge iron at the top of the furnace. Hydrogen obtained from the electrolysis of water may be used as the only reducing gas and the process may be worked at a pressure of 25 kgs. per cm<SP>2</SP>. Specification 776,260 is referred to.
GB634/57A 1956-01-07 1957-01-07 Improvements in and relating to the production of sponge iron Expired GB846284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE846284X 1956-01-07

Publications (1)

Publication Number Publication Date
GB846284A true GB846284A (en) 1960-08-31

Family

ID=20358507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB634/57A Expired GB846284A (en) 1956-01-07 1957-01-07 Improvements in and relating to the production of sponge iron

Country Status (1)

Country Link
GB (1) GB846284A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014040990A3 (en) * 2012-09-14 2014-06-12 Voestalpine Stahl Gmbh Method for storing discontinuously obtained energy during the reduction of iron ore

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014040990A3 (en) * 2012-09-14 2014-06-12 Voestalpine Stahl Gmbh Method for storing discontinuously obtained energy during the reduction of iron ore
WO2014040989A3 (en) * 2012-09-14 2014-06-12 Voestalpine Stahl Gmbh Method for producing steel using renewabel energy
CN104662176A (en) * 2012-09-14 2015-05-27 沃斯特阿尔派因钢铁有限责任公司 Method for producing steel using renewabel energy
JP2015529751A (en) * 2012-09-14 2015-10-08 フェストアルピネ シュタール ゲーエムベーハーＶｏｅｓｔａｌｐｉｎｅ Ｓｔａｈｌ Ｇｍｂｈ Steel manufacturing method
JP2015534604A (en) * 2012-09-14 2015-12-03 フェストアルピネ シュタール ゲーエムベーハーＶｏｅｓｔａｌｐｉｎｅ Ｓｔａｈｌ Ｇｍｂｈ Discontinuous energy storage method
EP2895631B1 (en) 2012-09-14 2018-07-18 Voestalpine Stahl GmbH Method for producing steel with regenerative energy

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