AT19385B - Process for cleaning pig iron BEzw. Production of steel using the open hearth process. - Google Patents
Process for cleaning pig iron BEzw. Production of steel using the open hearth process.Info
- Publication number
- AT19385B AT19385B AT19385DA AT19385B AT 19385 B AT19385 B AT 19385B AT 19385D A AT19385D A AT 19385DA AT 19385 B AT19385 B AT 19385B
- Authority
- AT
- Austria
- Prior art keywords
- pig iron
- iron
- bezw
- production
- steel
- Prior art date
Links
- 229910000805 Pig iron Inorganic materials 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 8
- 238000004140 cleaning Methods 0.000 title claims description 4
- 229910000831 Steel Inorganic materials 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000010959 steel Substances 0.000 title claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Landscapes
- Manufacture Of Iron (AREA)
Description
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Verfahren zur Reinigung von Roheisen bezw. Herstellung von Stahl nach dem offenen
Herdprozess.
EMI1.1
vorhergehenden Einsatze her im Ofen zurückgelassen wird, so kommt es häutig vor. wenn nicht das richtige Verhältnis beobachtet wird, dass das sich ergebende Bad in Ruhe bleibt und keine wahrnehmbare Reaktion durch den Eintritt des geschmolzenen kohlenstoffhaltigen Roheisens vor sich geht. Früher g) anbte man, dass zur Hervorbringung der gewünschten Reaktion, durch die der Kohlenstoff rasch in Form von Kohlenoxyd entweicht. nur ein gen1gender Uberschuss von Eisenoxyd in der Schacke nötig wäre.
Dies trifft tatsächlich
EMI1.2
ist. Das unter dem Kinnusse dieser hohen Temperatur und der darüber lagernden stark oxydi@ renden Schlacke stehende Bad nimmt äusserst rasch Sauerstoff auf und gerät dadurch in einen Zustand hoher Oxydation. Wenn dies erreicht ist und geschmolzenes kohlenstoff- rcichos Roheisen dem auf die geschilderte Weise sauerstoffreich gemachten Bade zugesetzt wird, so ist sofort das Entweichen des Kohlenstoffes in Form von Kohlenoxyd zu bemerken und dies mit einer solchen Sicherheit zu erreichen, ist Gegenstand der vorliegenden Erfindung.
In der Praxis wird man finden, dass, wenn das Eisenbad, in welches das kohlenstoffreiche Roheisen gegossen wird, von niedriger Temperatur ist, bevor die Zuschläge von Eisenoxyd und (alk zur Anreicherung der Schlacke zugesetzt werden, es schwierig ist, dieses Bad auf die zur llervorrufung der raschen Reaktion erforderliche Hitze zu bringen und dass die Schlacke das Bestreben zeigt, eine dicke Decke oberhalb des Bades zu bilden, welche Decke das Entweichen des Kohlenoxydes zu verhindern scheint, wenn das geschmolzene Roheisen eingegossen wird.
Die oben beschriebene Methode der Warmeaufspeieherung in dem Bade, des Anreicherns der Schlacke und des Eingiessens des geschmolzenen Roheisens bilden aber in ihrer Reihenfolge ein Verfahren, das ein vorteilhaftes Resultat ergibt und das Entstehen einer wallondon, porösen, schwammartigen Schlacke verhindert, diese vielmehr in einem flüssigen Zustand erhält, wodurch die Hitze leicht in das darunter befindliche Metall eindringen kann.
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EMI2.1
Resultate geben.
<Desc / Clms Page number 1>
Process for cleaning pig iron BEzw. Manufacture of steel after the open
Hearth process.
EMI1.1
If it is left behind in the oven for previous uses, it happens frequently. if the proper ratio is not observed, that the resulting bath remains at rest and there is no noticeable reaction to the entry of the molten carbonaceous pig iron. Previously g) it was stated that in order to bring about the desired reaction, through which the carbon escapes rapidly in the form of carbon oxide. only a sufficient excess of iron oxide would be required in the bag.
This is actually true
EMI1.2
is. The bath standing under the chin of this high temperature and the heavily oxidizing slag above it absorbs oxygen extremely quickly and thus gets into a state of high oxidation. When this has been achieved and molten carbon rcichos pig iron is added to the bath, which has been made oxygenated in the manner described, the escape of carbon in the form of carbon oxide is immediately noticeable and to achieve this with such certainty is the subject of the present invention.
In practice it will be found that if the iron bath into which the carbon-rich pig iron is poured is of low temperature before the iron oxide and alkali additives are added to enrich the slag, it will be difficult to apply this bath to the To induce the rapid reaction to bring the necessary heat, and that the slag tends to form a thick blanket above the bath, which blanket appears to prevent the escape of the carbon dioxide when the molten pig iron is poured in.
The above-described method of heat storage in the bath, the enrichment of the slag and the pouring in of the molten pig iron form, in their order, a process which gives an advantageous result and prevents the formation of a wallondon, porous, spongy slag, rather in a liquid one Condition so that the heat can easily penetrate the metal underneath.
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EMI2.1
Give results.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT19385T | 1903-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT19385B true AT19385B (en) | 1905-03-10 |
Family
ID=3524262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT19385D AT19385B (en) | 1903-05-03 | 1903-05-03 | Process for cleaning pig iron BEzw. Production of steel using the open hearth process. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT19385B (en) |
-
1903
- 1903-05-03 AT AT19385D patent/AT19385B/en active
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