DE835303C - Process for the production of high-quality cast iron types in a coke-operated cupola furnace - Google Patents
Process for the production of high-quality cast iron types in a coke-operated cupola furnaceInfo
- Publication number
- DE835303C DE835303C DEP1198A DE0001198A DE835303C DE 835303 C DE835303 C DE 835303C DE P1198 A DEP1198 A DE P1198A DE 0001198 A DE0001198 A DE 0001198A DE 835303 C DE835303 C DE 835303C
- Authority
- DE
- Germany
- Prior art keywords
- coke
- cast iron
- production
- cupola furnace
- operated
- 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
- 229910001018 Cast iron Inorganic materials 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000571 coke Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910001060 Gray iron Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
Verfahren zur Herstellung hochwertiger Gußeisensorten im mit Koks betriebenen Kupolofen Alle Bestrebungen zur Schaffung eines hochwertigen Gußeisens laufen bekanntlich auf eine Erhöhung der Überhitzungstemperatur des anfallenden Rinneneisens 'hinaus, weil diese die Grundlage der Herstellung von mec'hanisc'h hochfestem Gußeisen mit günstiger Graphitausbildung ist. lkeiin Kupolofenschmel-zen ist es jedoch über-# au -; schwer, die notwendigen Überhitzungstemperaturen des anfallenden Ruineneisens zu erreichen. Cber eine richtige 13instellungdes Kupolofens hinsichtlich Kokssatz undWindmenge hinaus hat sich die Vorwärmung des Windes als ein brauchbares Mittel erwiesen, ein überhitztes und gleichzeitig gas- und schwefelarmes Gußeisen im Kupolofen zu erzeugen. Je nadlt Windvorwärmung beträgt die Steigerung der Rinnentetnperatur des anfallenden Gußeisens 20 bis 9o° C. 1e höher aber die Windtemperatur, um so mehr wird die Zone höchster Ofentemperatur zusammengezogen und nach der Düsenebene verlagert, was den Nachteil hat, daß die sehr hohe Schmelzzonentemperatur einen stark erhöhten Verschleiß des Ofenfutters ergibt und infolge der zusammengezogenen, Zone höchster Ofentemperatur das Arbeiten mit Heißwind eine sehr weitgehende Überwachung des Schmelzprozesses erfordert.Process for the production of high quality cast iron with coke operated cupola furnace All efforts to create a high quality cast iron are known to run on an increase in the overheating temperature of the resulting Gutter iron 'because this is the basis of the manufacture of mec'hanisc'h high-strength cast iron with favorable graphite formation is. lkeiin cupola smelting is it over- # au -; difficult to achieve the necessary overheating temperatures of the to reach accruing ruin iron. About correct setting of the cupola with regard to the coke rate and the amount of wind, the preheating of the wind has proven to be proved to be a useful remedy, superheated and at the same time low in gas and sulfur To produce cast iron in a cupola furnace. The increase is the need for preheating of the wind the channel temperature of the resulting cast iron 20 to 90 ° C. 1e higher but the Wind temperature, the more the zone with the highest furnace temperature is drawn together and shifted to the nozzle plane, which has the disadvantage that the very high melt zone temperature results in a greatly increased wear of the furnace lining and as a result of the contracted, Zone of highest oven temperature, working with hot blast requires very extensive monitoring of the melting process.
Auch die Verwendung von sauerstoffangereichertem Wind hat sich als vorteilhaft erwiesen, führt jedoch durch die hohen Ofentemperaturen der Schmelzzonen zu einem um so schnelleren Abfall der Ofentemperatur infolge Reduktion der Kohlensäure zu Kohlenoxyd, ähnlich wie dies bei Verwendung von Heißwind beobachtet werden kann, wenn nicht der Satzkoks gleichzeitig um mindestens i bis 3°/o gegenüber dem Arbeiten mit kaltem Wind heruntergesetzt wird.The use of oxygenated wind has also proven to be proven to be advantageous, but leads to the high furnace temperatures of the melting zones to a faster drop in furnace temperature as a result of a reduction in carbon dioxide to carbon dioxide, similar to what can be observed when using a hot blast, if not the set coke at the same time by at least i to 3 ° / o opposite reduced when working with cold wind.
Vom Erfinder wurde bereits ein Verfahren vorgeschlagen, das sich auf die Kombination der Verwendung von Heißwind mit einer wirksamen Koksumkrustung bezog. Diese wirksame Ko'ksumkrustung nach dem vorgenannten Vorschlag vermindert auch ganz erheblich die Reduktion der Kohlensäure in der Schmelzzone bei Verwendung von sauerstoffangereichertem Wind. Erfindungsgemäß ist es von größtem Vorteil, eine wirksame Koksumkrustung mit einer Sauerstoffanreicherung des Windes zu 'kombinieren, da die Auswirkung einer solchen Kombination die gleichen günstigen Rückwirkungen auf die Temperaturcharakteristik im Ofen, die Verminderung der Ko'hlensäurereduktion und die Temperatur des Rinneneisens besitzt. Die erfindungsgemäß in Vorschlag gebrachte Kombination: wirksame Koksumkrustung -1-- sauerstoffangereicherter Wind hat den weiteren Vorteil, daß keine der relativ teuren Winderhitzerapparaturen benötigt werden. Vielmehr ist jede, auch die kleinste Gießerei imstande, ohne größere Investitionen nach diesem Verfahren zu arbeiten und sich die Vorteile desselben nutzbar zu machen. Die erfindungsgemäße Arbeitsweise eignet sich insbesondere für die Erschmelzung eines heißen Rinneneisens in Grau-, Hartguß- und Tempergießereien, desgleichen für die Herstellung von kohlenstoffreichen Vorlegierungen aus stahlschrottreichen Gattierungen.The inventor has already proposed a method based on related to the combination of the use of hot blast with effective coke encrustation. This effective coconut encrustation according to the aforementioned proposal also diminishes completely the reduction of carbon dioxide in the melting zone when using oxygen-enriched Wind. According to the invention, it is of the greatest advantage to have an effective coke encrustation an oxygen enrichment of the wind ', as the effect of a Such a combination has the same beneficial effects on the temperature characteristics in the furnace, the reduction in carbonic acid reduction and the temperature of the channel iron owns. The combination proposed according to the invention: effective coke encrustation -1-- oxygen-enriched wind has the further advantage that none of the relative expensive heater appliances are required. Rather, everyone is, even the smallest The foundry is able to use this process without major investments and to make use of the advantages of the same. The method of operation according to the invention is particularly suitable for melting a hot channel iron in gray, Chilled and malleable foundries, also for the production of high-carbon ones Master alloys from types rich in steel scrap.
Die vorstehend beschriebene Arbeitsweise ist naturgemäß auch für alle mit Koks betriebenen Schachtöfen zum Erschmelzen von metallischen Stoffen, z. B. Kupfer. Rotguß, Bronzen, gegebenenfalls auch Aluminiumlegiertingeii, grundsätzlich anwendbar.The working method described above is of course also applicable to everyone shaft furnaces operated with coke for melting metallic materials, e.g. B. Copper. Gunmetal, bronzes, possibly also aluminum alloy parts, basically applicable.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP1198A DE835303C (en) | 1950-04-04 | 1950-04-04 | Process for the production of high-quality cast iron types in a coke-operated cupola furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP1198A DE835303C (en) | 1950-04-04 | 1950-04-04 | Process for the production of high-quality cast iron types in a coke-operated cupola furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE835303C true DE835303C (en) | 1952-03-31 |
Family
ID=5647588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP1198A Expired DE835303C (en) | 1950-04-04 | 1950-04-04 | Process for the production of high-quality cast iron types in a coke-operated cupola furnace |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE835303C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973695C (en) * | 1950-04-27 | 1960-05-05 | Union Carbide Corp | Process for the production of low-sulfur and low-phosphorus deoxidized cast iron |
| DE1225674B (en) * | 1959-08-26 | 1966-09-29 | Kloeckner Werke Ag | Process for the production of high-carbon cast iron from low-carbon feedstock, in particular steel scrap, in a cupola furnace |
-
1950
- 1950-04-04 DE DEP1198A patent/DE835303C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973695C (en) * | 1950-04-27 | 1960-05-05 | Union Carbide Corp | Process for the production of low-sulfur and low-phosphorus deoxidized cast iron |
| DE1225674B (en) * | 1959-08-26 | 1966-09-29 | Kloeckner Werke Ag | Process for the production of high-carbon cast iron from low-carbon feedstock, in particular steel scrap, in a cupola furnace |
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