DE327055C - Process for fusing bauxite on ferroaluminum in an electric furnace - Google Patents
Process for fusing bauxite on ferroaluminum in an electric furnaceInfo
- Publication number
- DE327055C DE327055C DE1918327055D DE327055DD DE327055C DE 327055 C DE327055 C DE 327055C DE 1918327055 D DE1918327055 D DE 1918327055D DE 327055D D DE327055D D DE 327055DD DE 327055 C DE327055 C DE 327055C
- Authority
- DE
- Germany
- Prior art keywords
- ferroaluminum
- electric furnace
- bauxite
- fusing
- iron
- 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
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Verfahren .zum Verschmelzen von Bauxit auf Ferroaluminium im elektrischen Ofen. Nach dem Verfahren des. Hauptpatentes wird das Verschmelzen von Bauxit oder Ton auf Ferroafuminium dadurch erlei@chüert, daß man Kalziumverbi,ndungen, insbesondere gebrannten Kalk, zusetzt. D-iie entstehende Schlacke besteht größtenteils aus Kalziumkarbid, enthält jedoch immer noch größere Mengen, bis zu 30 und 4.o Prozent, Tonerde, die augenscheinlich einem Gleichgewichtszustand in der Wechselwirkung zwischen der Sehlacke und dfem Metallbad entsprechen. Das Verhältnis läßt sich auch nur unwesentlich verändern, wenn man den Kohlezusatz. im Möller erhöht. Der Erfolg dieser Maßnahme besteht lediglich in einer starken Kohlung des Metallbades, so d'aß das. erhaltene Ferroalumi:nium zur Desoxydation von weichenEisensorten unbrauchbar wird.Process for fusing bauxite on ferroaluminum in an electric furnace. According to the process of the main patent, the fusing of bauxite or clay onto ferro-aluminum is achieved by adding calcium compounds, in particular quick lime. The resulting slag consists largely of calcium carbide, but still contains larger amounts, up to 30 and 40 percent, alumina, which apparently correspond to a state of equilibrium in the interaction between the optic varnish and the metal bath. The ratio can only be changed insignificantly if you add the coal. increased in the Möller. The success of this measure consists only in a strong carbonization of the metal bath, so that the ferroaluminium obtained is unusable for the deoxidation of soft iron types.
Es ist an sich bekannt, Metalloxyde aus solche enthaltenden Schlacken durch Zugabe geeigneter Reduktionsstoffe auszufällen und in das Metallbad zurückzuführen.It is known per se to produce metal oxides from slags containing them to be precipitated by adding suitable reducing agents and returned to the metal bath.
. Die vorliegende Erfindung zeigt nun einen einfachen Weg zur Beseitigung dieses. Übelstandes. Man verfährt derart, daß man der noch über demMetallbad befindlichinSch ,acke frisches Eisen zuführt, und zwar in möglichst. fein verteilter Form. Am besten eignet sich hierzu Eisenoxyd oder eisenoxydhaltige Erze, die im Gemisch mit Kohle verwendet werden. Doch kann man auch Eisenspäne oder andere Abfälle nehmen, die man auch zweckmäßig irn Gemisch mit etwas Kohlenstoff zusetzt. Durch das--reine Eisen wird der Gleichgewichtszustand derart geändert, d'aß weitere Tonerde reduziert und das .entstehende Aluminium vom Eisen aufgenommen und dem Metallbad zugeführt wird. Die Produktion. eines Ofens kann. auf diese Weise ahne Erhöhung .des Stromverbrauchs etwa verdoppelt werden. Gleichzeitig wird der Wert der Schlacke als Ersatz für Karbid erheblich gesteigert, indem die für diesen Zweck wertlose Tonerde entfernt wird,. .. The present invention now shows a simple way of eliminating this this. Evil. One proceeds in such a way that the one that is still above the metal bath is , acke supplies fresh iron, in as much as possible. finely divided form. Preferably suitable for this is iron oxide or ores containing iron oxide, which are mixed with coal be used. But you can also take iron filings or other waste that it is also expedient to add a mixture with a little carbon. Through the - pure Iron is so changed its state of equilibrium that further alumina is reduced and the resulting aluminum is absorbed by the iron and fed to the metal bath will. The production. of an oven can. in this way without an increase in power consumption to be roughly doubled. At the same time, the value of the slag as a substitute for carbide significantly increased by removing the clay, which is worthless for this purpose. .
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE327055T | 1918-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE327055C true DE327055C (en) | 1920-10-04 |
Family
ID=6184558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1918327055D Expired DE327055C (en) | 1918-11-16 | 1918-11-16 | Process for fusing bauxite on ferroaluminum in an electric furnace |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE327055C (en) |
-
1918
- 1918-11-16 DE DE1918327055D patent/DE327055C/en not_active Expired
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