DE123699C - - Google Patents
Info
- Publication number
- DE123699C DE123699C DE1900123699D DE123699DA DE123699C DE 123699 C DE123699 C DE 123699C DE 1900123699 D DE1900123699 D DE 1900123699D DE 123699D A DE123699D A DE 123699DA DE 123699 C DE123699 C DE 123699C
- Authority
- DE
- Germany
- Prior art keywords
- forehearth
- furnace
- gases
- iron
- decarburization
- 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 - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 230000001590 oxidative Effects 0.000 claims description 3
- 229910000499 pig iron Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005261 decarburization Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 201000005569 gout Diseases 0.000 description 1
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
- C21C1/00—Refining of pig-iron; Cast iron
-
- 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
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/02—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey
- F27B1/025—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey with fore-hearth
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die vorliegende Erfindung betrifft ein Verfahren zur Entkohlung von flüssigem Roheisen im Vorherde des Kupolofens. Dieses Verfahren ist gegenüber dem z. B. von Dürre, Handbuch des Eisengiefsereibetriebes, 1892, Band I, S. 561, beschriebenen, bei welchem die Gasabnahme dicht unterhalb des Gichtabschlusses stattfindet, dadurch gekennzeichnet, dafs die Ofengase nach Abschlufs der Gicht und Abstellung der Formen mittelst unterhalb der Gicht angeordneter Düsen, unter Benutzung des Gegenstromprincips, in den Vorherd getrieben werden.The present invention relates to a method for decarburizing liquid pig iron in the forehearth of the cupola furnace. This method is compared to the z. B. from drought, Handbuch des Eisengiefsereibetriebes, 1892, Volume I, p. 561, described in which the gas take-off takes place just below the gout closure, characterized in that that the furnace gases after the end of the blast and the placing of the molds in the middle below the top of the nozzles, using the countercurrent principle, into the forehearth to be driven.
Die zur Ausführung des Verfahrens dienende Vorrichtung ist in der Zeichnung dargestellt.The device used to carry out the method is shown in the drawing.
Das Roheisen wird im Schacht α niedergeschmolzen und sammelt sich im Vorherd b. Hierauf wird der Schacht α durch einen Deckel c geschlossen, der Wind bei den Formen g abgestellt, dagegen durch die Düsen/ im oberen Theil des Schachtes eingeblasen, wodurch die heifsen Gase gezwungen werden, durch den Ofenschacht nach abwärts in den Vorherd zu streichen, wo sie verbrannt und zur Wärmeabgabe benutzt werden. Vermöge dieser Einrichtung wird der Koks vollkommen ausgenutzt und die Gase werden weit höher erhitzt, als es bei der gewöhnlichen Verbrennung geschieht. Die hochgradig erhitzten Gase werden im Vorherd mit der durch die Düse d eingeprefsten Luft zu einer oxydirenden Flamme vollkommen verbrannt und geben ihre Wärme an das Bad ab, indem sie letzteres zugleich vor Abkühlung durch die auf seine Oberfläche auftreffenden Luftstrahlen schützen, welche im Verein mit der oxydirenden Flamme das Eisen entkohlen.The pig iron is melted down in the shaft α and collects in the forehearth b. Then the shaft α is closed by a cover c , the wind is turned off at the molds g , but blown in through the nozzles / in the upper part of the shaft, whereby the hot gases are forced to sweep down through the furnace shaft into the forehearth where they are burned and used to give off heat. By virtue of this device, the coke is fully utilized and the gases are heated far higher than is the case with normal combustion. The extremely heated gases are completely burned in the forehearth with the air forced in through the nozzle d to form an oxidizing flame and give off their heat to the bath, while at the same time protecting the latter from being cooled by the air jets hitting its surface, which in combination with the oxidizing flame decarburize the iron.
Die abziehenden Gase entweichen bei h. The withdrawing gases escape at h.
Claims (1)
Verfahren zur Entkohlung von flüssigem Roheisen im Vorherde eines Kupolofens mittelst einer die Oberfläche des Eisens ganz oder theilweise bestreichenden Düse unter gleichzeitiger Benutzung der Ofengase, welche, zu einer oxydirenden Flamme verbrannt, die Entkohlung beschleunigen und den Vorherd erwärmen, dadurch gekennzeichnet,, dafs die Ofengase nach Abschlufs der Gicht und Abstellung der Formen (g) mittelst unterhalb der Gicht angeordneter Düsen (f) in den Vorherd (b) getrieben werden.Patent claim:
Process for the decarburization of liquid pig iron in the forehearth of a cupola by means of a nozzle which wholly or partially sweeps the surface of the iron while simultaneously using the furnace gases which, when burned to form an oxidizing flame, accelerate the decarburization and heat the forehearth, characterized in that the furnace gases After the top of the furnace has been completed and the molds (g ) have been turned off , they are driven into the forehearth (b) by means of nozzles (f) arranged below the top of the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT8424D AT8424B (en) | 1900-02-01 | 1901-09-30 | Process for the decarburization of liquid pig iron in the forehearth of a cupola furnace. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE123699C true DE123699C (en) |
Family
ID=392533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1900123699D Expired - Lifetime DE123699C (en) | 1900-02-01 | 1900-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE123699C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540313A (en) * | 1984-04-06 | 1985-09-10 | Williams And Broome, Inc. | Apparatus for the generation of hydroelectric power and method of manufacturing and installing same |
-
1900
- 1900-02-01 DE DE1900123699D patent/DE123699C/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540313A (en) * | 1984-04-06 | 1985-09-10 | Williams And Broome, Inc. | Apparatus for the generation of hydroelectric power and method of manufacturing and installing same |
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