DE428755C - Process for the production of pig iron and steel - Google Patents

Process for the production of pig iron and steel

Info

Publication number
DE428755C
DE428755C DEF56173D DEF0056173D DE428755C DE 428755 C DE428755 C DE 428755C DE F56173 D DEF56173 D DE F56173D DE F0056173 D DEF0056173 D DE F0056173D DE 428755 C DE428755 C DE 428755C
Authority
DE
Germany
Prior art keywords
pig iron
production
steel
freshening
wind
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
DEF56173D
Other languages
German (de)
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.)
Eisen & Stahlwerk Hoesch Akt G
Original Assignee
Eisen & Stahlwerk Hoesch Akt G
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 Eisen & Stahlwerk Hoesch Akt G filed Critical Eisen & Stahlwerk Hoesch Akt G
Priority to DEF56173D priority Critical patent/DE428755C/en
Application granted granted Critical
Publication of DE428755C publication Critical patent/DE428755C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C21C5/04—Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel

Landscapes

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

Description

Verfahren zur Erzeugung von Roheisen und Stahl. Im Patent 38zoo6 sind neue wärmewirtschaftliche Grundsätze zur Verkupplung von Roheisen- und Stahlerzeugern aufgestellt. Für die Stahlerzeugung insbesondere wird auf Seite a die Verwertung der Abhitze zur Erzvorbereitung und die Vorfrischung des Martinofeneinsatzes gefordert, wobei als neues Kennzeichen des letztgenannten, an sich ja bekannten sogenannten Duplexverfahrens, die Verwertung der CO-haltigen Abgase des Frischverfahrens zur Erzreduktion noch hinzukommt.Process for the production of pig iron and steel. In the 38zoo6 patent are new thermal management principles for coupling pig iron and steel producers set up. For steel production in particular, recovery is on side a the waste heat for ore preparation and the pre-freshening of the martin furnace insert required, whereby as a new feature of the latter, so-called known per se Duplex process, the recovery of the CO-containing exhaust gases from the fresh process for Ore reduction is added.

Die Erfindung bezweckt nun, eine noch engere Verkupplung von Hochöfen, Windfrischern und Martinöfen zu erzielen, indem in an sich bekannter Weise die beiden ersten ganz zusammengelegt werden, derart, daß das im Hochofen aus Erz und Koks erblasene Roheisen unmittelbar im Fuße des Ofens selbst (oder auch in einem Vorherd oder einer eingeschobenen Pfanne, was an sich eine unerhebliche Änderung wäre) mittels Windfrischung behandelt wird, wobei diese V4@indfrischung gleichzeitig mit dem Erblasen von Roheisen oder auch zeitlich später nach Abstellen der Düsen erfolgen kann. Die Erfindung besteht nun darin, daß die CO-haltigen, heißen Abgase des Vorfrischers, gegebenenfalls mit Lichtgasen oder anderen reduzierenden Fremdasen gemischt, ohne jeden Wärmeverlust in die darüber- oder getrennt danebenliegenden Erzschüttungen gelangen und hier Reduktionsarbeit leisten. Das hierdurch erzeugte heißere, durch Windfrischung vorgefrischte Eisen führt man sodann dem Martinofen oder Elektroofen zu.The invention now aims to provide an even closer coupling of blast furnaces, Wind fresheners and martin ovens by using the two in a manner known per se first to be put together completely, in such a way that the furnace is made of ore and coke blown pig iron directly in the foot of the furnace itself (or in a forehearth or an inserted pan, which in itself would be an insignificant change) by means of Wind freshening is treated, this V4 @ indfr freshening at the same time as the blowing of pig iron or later after turning off the nozzles. the Invention now consists in the fact that the CO-containing, hot exhaust gases from the pre-freshener, optionally mixed with light gases or other reducing foreign gases, without any heat loss in the ore beds lying above or separately next to it and do reduction work here. The resulting hotter, through Irons that have been freshly refreshed by the wind are then fed into the Martin oven or the electric oven to.

Die Verarbeitung derart gefrischten Roheisens ergibt wesentliche Wärmeersparnisse durch Chargenverkürzung im Martinofen, besonders wenn zum Frischen sauerstoffreiche Luft verwendet wird. Sie ist vorteilhafter, als wenn in Birnen gefrischt und deren Abgase in besondere Erzreduktionsräume eingeleitet werden, weil bei letzterem Verfahren große Wärme- und Zeitverluste entstehen.The processing of such refined pig iron results in significant heat savings by shortening the batches in the Martin oven, especially when fresh ones are oxygen-rich Air is used. It is more beneficial than when freshened in pears and theirs Exhaust gases are introduced into special ore reduction rooms, because in the latter process large heat and time losses occur.

Claims (1)

PATENT-ANSPRUCI3: Verfahren zur Erzeugung von Roheisen und Stahl nach Patent 38IooG, wobei das im Hochofen erzeugte Roheisen vor dem Einsatz in die Martinöfen durch Windfrischen gegebenenfalls unter Sauerstoffzusatz vorbehandelt wird, dadurch gekennzeichnet, daß die beim Vorfrischen entfallenden kohlenoxydhaltigen heißen Abgase zur unmittelbaren Erzreduktion rnitverwendet werden.PATENT-ANSPRUCI3: Process for the production of pig iron and steel according to Patent 38IooG, whereby the pig iron produced in the blast furnace before being used in the martin furnaces is pretreated by wind freshening, optionally with the addition of oxygen, thereby characterized in that those omitted during pre-freshening are called carbon-oxide-containing Exhaust gases can also be used for direct ore reduction.
DEF56173D 1924-05-27 1924-05-27 Process for the production of pig iron and steel Expired DE428755C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF56173D DE428755C (en) 1924-05-27 1924-05-27 Process for the production of pig iron and steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF56173D DE428755C (en) 1924-05-27 1924-05-27 Process for the production of pig iron and steel

Publications (1)

Publication Number Publication Date
DE428755C true DE428755C (en) 1926-05-15

Family

ID=7107900

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF56173D Expired DE428755C (en) 1924-05-27 1924-05-27 Process for the production of pig iron and steel

Country Status (1)

Country Link
DE (1) DE428755C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1214714B (en) * 1954-04-06 1966-04-21 Waagner Biro Ag Process for the combustion of the carbon monoxide-containing exhaust gases and fumes formed in oxygen-blowing converters used in steel production
DE1277283B (en) * 1963-01-12 1968-09-12 Dingler Werke Ag Process for the recovery of unburned converter exhaust gases and device for carrying out this process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1214714B (en) * 1954-04-06 1966-04-21 Waagner Biro Ag Process for the combustion of the carbon monoxide-containing exhaust gases and fumes formed in oxygen-blowing converters used in steel production
DE1277283B (en) * 1963-01-12 1968-09-12 Dingler Werke Ag Process for the recovery of unburned converter exhaust gases and device for carrying out this process

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