DE442776C - Process for the direct production of pig iron and steel - Google Patents
Process for the direct production of pig iron and steelInfo
- Publication number
- DE442776C DE442776C DEST39886D DEST039886D DE442776C DE 442776 C DE442776 C DE 442776C DE ST39886 D DEST39886 D DE ST39886D DE ST039886 D DEST039886 D DE ST039886D DE 442776 C DE442776 C DE 442776C
- Authority
- DE
- Germany
- Prior art keywords
- reaction
- blown
- steel
- pig iron
- direct production
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/10—Making pig-iron other than in blast furnaces in electric furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0026—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide in the flame of a burner or a hot gas stream
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
Verfahren zur unmittelbaren Erzeugung von Roheisen und Stahl.
Die Erfindung besteht darin, daß eine Vorwärmung der staubförmig gemahlenen Reaktionsausgangsstoffe, wie Erz, Zuschläge, Kohlenstoff, im elektrischen Lichtbogen eingeführt wird. Die Durchführung des Vorwärmungsprozesses kann so erfolgen, daß entweder die staubförmigen Reah-tionsausgangsstoffe mittels einer düsenartigen Einrichtung zwischen die Elektroden oder durch die in bekannter Weise als Hohlzylinder ausgebildeten Elektroden hindurch in den Lichtbogen geblasen werden. Dadurch wird die zur vollständigen Reduktion erforderliche Temperatur und eine wesentliche Beschleunigung des Reaktionsprozesses erreicht. Da ferner die hohen Temperaturen erzielt werden ohne zusätzlichen Kohlenstoff, kann zur Förderung des staubförmigen Gutes, unter Vermeidung jeglichen Luftzusatzes, Reaktionsgas im Kreislauf verwendet werden, was einerseits zu einer wesentlichen Ersparnis von Wärmeenergie, andererseits zum Gewinn eines fast ausschließlich aus Kohlenstoffmonosyd bestehenden hochwertigen Gases führt.The invention consists in preheating the powdery ground Reaction starting materials, such as ore, aggregates, carbon, in an electric arc is introduced. The preheating process can be carried out in such a way that either the powdery reaction starting materials by means of a nozzle-like device between the electrodes or by means of the hollow cylinders formed in a known manner Electrodes are blown through into the arc. This makes the complete Reduction of the required temperature and a substantial acceleration of the reaction process achieved. Furthermore, since the high temperatures are achieved without additional carbon, can be used to convey the powdery material, avoiding any addition of air, Reaction gas can be used in the cycle, which on the one hand leads to an essential Saving of thermal energy, on the other hand to profit almost exclusively from Carbon monoside existing high quality gas leads.
Der Temperatureffekt wird noch dadurch erhöht, daß, wie aus der Beschreibung und Zeichnung zu ersehen ist, der in Reaktion befindliche Staubstrahl von den Reaktionsgasen fontäneartig umhüllt wird.The temperature effect is further increased by the fact that, as from the description and the drawing shows the reacting dust jet from the reaction gases is wrapped like a fountain.
Soll Stahl erzeugt werden, so kann. beispielsweise nach Ansammlung genügender Mengen von Roheisen die Flamme ot-%-dierend oder frischend eingestellt werden.If steel is to be produced, then. for example after accumulation Sufficient amounts of pig iron ot -% - set the flame dying or freshening will.
In der Zeichnung ist eine Ausführungsform im Schema dargestellt. A ist ein zylindrischer Reaktionsschacht, dessen Wand B durch die mit Wasser oder Dampf beschickten Kühlrohre C gekühlt wird. Das Staubgemisch aus Erz und Kohle wird durch die Staubleitung I) von oben in- den Reaktionsschacht (furch den an den Elektroden E gebil(ieten Lichtbogen geblasen. Die vorgewärmte Luft wird durch die Heißluftleitung lt, die Ringleitung G und die Winddüse H unterhalb der Elektroden im spitzen Winkel zu dem eingeblasenen Strahl in diesen hereingeblasen. Die bei der Reaktion bildeten Eisen- und Schlackentröpfchen sarnineln sich in dem unteren Teil des Rea17-tionsschachtes als Eisen- und Schlackenbad 7. Die Schlacke wird durch die Schlackenform K, das Eisen durch die Abstichform L abgezogen. Die gasförmigen Reaktionsprodukte 11I steigen in dem Schachte hoch und strömen, die eingeblasenen Reaktionsstoffe fontäneartig umhüllend, durch die öffnung N in den Ringschacht 0, geben in diesem ihre physikalische Wärme an die Dampfrohre P aab un( 1verlassen den Ringschach tbei O.In the drawing, an embodiment is shown in the scheme. A is a cylindrical reaction shaft, the wall B of which is cooled by the cooling tubes C charged with water or steam. The dust mixture of ore and coal is blown through the dust line I) from above into the reaction shaft (through the arc formed at the electrodes E. The preheated air is blown through the hot air line, the ring line G and the tuyere H below the electrodes at an acute angle to the jet blown in. The iron and slag droplets formed during the reaction collect in the lower part of the reaction shaft as iron and slag bath 7. The slag is produced by the slag mold K, the iron by the tapping mold L. The gaseous reaction products 11I rise up in the shaft and flow, enveloping the injected reaction substances like a fountain, through the opening N into the ring shaft 0, in this giving off their physical heat to the steam pipes P a and ( 1 leave the ring shaft t at O .
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST39886D DE442776C (en) | 1925-07-22 | 1925-07-22 | Process for the direct production of pig iron and steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST39886D DE442776C (en) | 1925-07-22 | 1925-07-22 | Process for the direct production of pig iron and steel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE442776C true DE442776C (en) | 1927-04-06 |
Family
ID=7463566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST39886D Expired DE442776C (en) | 1925-07-22 | 1925-07-22 | Process for the direct production of pig iron and steel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE442776C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186887B (en) * | 1959-06-18 | 1965-02-11 | Demag Elektrometallurgie Gmbh | Process and device for refining fine-grain iron ores in an electrically heated floating bed made of fine coal |
DE1246780B (en) * | 1955-08-31 | 1967-08-10 | Werner Wenzel Dr Ing | Process for refining finely divided ores, in particular iron ores, by means of finely divided reducing coal and electrical heating |
DE1271133B (en) * | 1959-03-04 | 1968-06-27 | E H Hermann Schenck Dr Ing Dr | Method for operating an electric reduction furnace |
EP0010647A1 (en) * | 1978-10-10 | 1980-05-14 | Mannesmann Demag AG | Method and apparatus for producing steel from iron ore powder by direct reduction |
US4318736A (en) * | 1979-10-10 | 1982-03-09 | Mannesmann Demag Ag | Method for manufacturing steel from iron ore dust by direct reduction |
EP0690136A1 (en) * | 1994-07-01 | 1996-01-03 | Hoogovens Groep B.V. | Method and apparatus for production of iron from iron compounds |
-
1925
- 1925-07-22 DE DEST39886D patent/DE442776C/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1246780B (en) * | 1955-08-31 | 1967-08-10 | Werner Wenzel Dr Ing | Process for refining finely divided ores, in particular iron ores, by means of finely divided reducing coal and electrical heating |
DE1271133B (en) * | 1959-03-04 | 1968-06-27 | E H Hermann Schenck Dr Ing Dr | Method for operating an electric reduction furnace |
DE1186887B (en) * | 1959-06-18 | 1965-02-11 | Demag Elektrometallurgie Gmbh | Process and device for refining fine-grain iron ores in an electrically heated floating bed made of fine coal |
EP0010647A1 (en) * | 1978-10-10 | 1980-05-14 | Mannesmann Demag AG | Method and apparatus for producing steel from iron ore powder by direct reduction |
US4324390A (en) * | 1978-10-10 | 1982-04-13 | Mannesmann Demag Ag | Apparatus for manufacturing steel from iron ore dust by direct reduction |
US4318736A (en) * | 1979-10-10 | 1982-03-09 | Mannesmann Demag Ag | Method for manufacturing steel from iron ore dust by direct reduction |
EP0690136A1 (en) * | 1994-07-01 | 1996-01-03 | Hoogovens Groep B.V. | Method and apparatus for production of iron from iron compounds |
NL9401103A (en) * | 1994-07-01 | 1996-02-01 | Hoogovens Groep Bv | Method and device for the pre-reduction of iron compounds. |
US5639293A (en) * | 1994-07-01 | 1997-06-17 | Hoogovens Staal B.V. | Method and apparatus for production of iron from iron compounds |
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