MX9601912A - Metodo para reducir oxido de metal en un horno de plaza giratoria, calentado por una flama de oxidacion. - Google Patents

Metodo para reducir oxido de metal en un horno de plaza giratoria, calentado por una flama de oxidacion.

Info

Publication number
MX9601912A
MX9601912A MX9601912A MX9601912A MX9601912A MX 9601912 A MX9601912 A MX 9601912A MX 9601912 A MX9601912 A MX 9601912A MX 9601912 A MX9601912 A MX 9601912A MX 9601912 A MX9601912 A MX 9601912A
Authority
MX
Mexico
Prior art keywords
metal oxide
platform
reductant
hearth furnace
heated
Prior art date
Application number
MX9601912A
Other languages
English (en)
Other versions
MXPA96001912A (es
Inventor
David M Kundrat
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of MX9601912A publication Critical patent/MX9601912A/es
Publication of MXPA96001912A publication Critical patent/MXPA96001912A/es

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
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • C21B13/105—Rotary hearth-type furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C35/00—Master alloys for iron or steel
    • C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • 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)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture Of Iron (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

Un método de reduccion de oxido de metal en un horno (14) de plaza giratoria, para fabricar una carga de alimentacion para un recipiente de refinacion cuando se fabrica hierro en aleacion, acero en aleacion o acero inoxidable. El horno de plaza giratoria incluye una pared (32) refractaria interior, anular, una pared (34) refractaria exterior, anular, una plataforma (33) refractaria, anular entre las dos paredes. Quemadores (36, 40) de combustible estacionarios, están montados a las paredes (32, 34) en una posicion justo por arriba de una superficie superior de la plataforma. Una mezcla de un oxido de metal y un reductor carbonáceo se coloca sobre la superficie superior de la plataforma y se hace girar para que pase los quemadores. El oxido es calentado por una flama de oxidacion. Después, una segunda capa de un reductor es cargada sobre la primera capa caliente y ambas capas se calientan durante un período adicional de tiempo a una temperatura de por lo menos 1300°C para reducir el oxido de metal. El oxido de metal puede ser mineral de cromo, concentrado de mineral de cromo, mineral de níquel, concentrado de mineral de níquel y partículas de los humos de acero inoxidable. El reductor puede ser carbon vegetal o coque. Los metales reducidos proporcionan unidades metálicas baratas para formar la aleacion con el hierro fundido.
MXPA/A/1996/001912A 1995-06-06 1996-05-21 Metodo para reducir oxido de metal en un horno deplaza giratoria, calentado por una flama deoxidacion MXPA96001912A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/470,311 US5567224A (en) 1995-06-06 1995-06-06 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame
US08470311 1995-06-06

Publications (2)

Publication Number Publication Date
MX9601912A true MX9601912A (es) 1997-09-30
MXPA96001912A MXPA96001912A (es) 1998-07-03

Family

ID=

Also Published As

Publication number Publication date
DE69606666D1 (de) 2000-03-23
ATE189832T1 (de) 2000-03-15
ES2141997T3 (es) 2000-04-01
GR3032684T3 (en) 2000-06-30
JPH08337827A (ja) 1996-12-24
CN1051580C (zh) 2000-04-19
DE69606666T2 (de) 2000-08-10
US5567224A (en) 1996-10-22
KR970001563A (ko) 1997-01-24
EP0747491B1 (en) 2000-02-16
ZA963640B (en) 1996-11-19
AU5477296A (en) 1996-12-19
EP0747491A1 (en) 1996-12-11
CN1143681A (zh) 1997-02-26
AU691421B2 (en) 1998-05-14
CA2175750A1 (en) 1996-12-07

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