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GB876765A - A method for the treatment of iron ores - Google Patents

A method for the treatment of iron ores

Info

Publication number
GB876765A
GB876765A GB34751/58A GB3475158A GB876765A GB 876765 A GB876765 A GB 876765A GB 34751/58 A GB34751/58 A GB 34751/58A GB 3475158 A GB3475158 A GB 3475158A GB 876765 A GB876765 A GB 876765A
Authority
GB
United Kingdom
Prior art keywords
furnace
reducing
gas
iron
temperature
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
GB34751/58A
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
Publication of GB876765A publication Critical patent/GB876765A/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
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/26—Multiple arrangement thereof for series flow
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Iron (AREA)

Abstract

876,765. Reducing iron ore. NOGIWA, Y. Oct. 29, 1958 [Nov. 4, 1957], No. 34751/58. Class 72. A method for t h reduction o f iron ores comprises passing the ore into a cyclone reducing furnace into which are blown hot reducing gases produced in another furnace by reaction between carbonaceous material and another gas, the quality and temperature of the reducing gas being regulated in the other furnace so that' no caking occurs in the reducing furnace. As shown using cyclone furnaces, high temperature oxidizing gas and preheated carbonaceous material are fed to furnace I to produce a reducing gas which is blown at high velocity into a melting furnace II fed with reduced iron from a reducing furnace IV. The gases from furnace II are passed into furnace III where the carbonaceous material is preheated and the temperature and quality of the reducing gas are controlled. The gas from furnace III is then passed into the main reducing furnace IV, into which iron ore and finely divided limestone, preheated in furnace V, is introduced and the iron ore reduced to iron. The temperature in furnace III may be controlled by the addition of steam, the endothermic reaction between steam and carbon reducing the gas temperature. The reducing gas may pass directly from furnace I to furnace III, and an iron powder obtained from furnace IV, furnace II, being omitted.
GB34751/58A 1957-11-04 1958-10-29 A method for the treatment of iron ores Expired GB876765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP876765X 1957-11-04

Publications (1)

Publication Number Publication Date
GB876765A true GB876765A (en) 1961-09-06

Family

ID=13921527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34751/58A Expired GB876765A (en) 1957-11-04 1958-10-29 A method for the treatment of iron ores

Country Status (1)

Country Link
GB (1) GB876765A (en)

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