DE327055C - Process for fusing bauxite on ferroaluminum in an electric furnace - Google Patents

Process for fusing bauxite on ferroaluminum in an electric furnace

Info

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
Application number
DE1918327055D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinische Elektrowerke A G
Original Assignee
Rheinische Elektrowerke A G
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinische Elektrowerke A G filed Critical Rheinische Elektrowerke A G
Application granted granted Critical
Publication of DE327055C publication Critical patent/DE327055C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating 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)

PATENT-ANSPRUCFI: Verfahren zum Verschmelzen von Bauxit auf Ferroaluminnum im elektrischen Ofen, dadurch gekennzeichnet, daß die in der Schlacke enthaltene Tonerde durch einen Zusatz von Eisen oder Eisenverbindungen und nötigenfalls von Kohle zu Metall reduziert wird.PATENT CLAIM: Process for fusing bauxite on ferroaluminum in the electric furnace, characterized in that the contained in the slag Clay by adding iron or iron compounds and, if necessary, of Coal is reduced to metal.
DE1918327055D 1918-11-16 1918-11-16 Process for fusing bauxite on ferroaluminum in an electric furnace Expired DE327055C (en)

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)

Similar Documents

Publication Publication Date Title
DE327055C (en) Process for fusing bauxite on ferroaluminum in an electric furnace
DE126492C (en)
US3374086A (en) Process for making strontium-bearing ferrosilicon
DE863952C (en) Process for the reduction of iron oxides in a flame furnace
US2631936A (en) Process for the production of a ferrochrome-silicon-aluminum alloy
DE552127C (en) Process for producing a carbon-rich pig iron with less than 0.5% silicon, less than 0.3% manganese and not more than 0.05% sulfur in a coke oven
DE1583217B1 (en) Basic steelmaking process
DE448099C (en) Process for the simultaneous production of iron phosphide and molten cement
DE663308C (en) Process and furnace system for the production of ferrosilicon and aluminum from raw materials containing silica, alumina and iron oxide
DE902623C (en) Ferroalloy and its manufacture
GB290318A (en) Improvements relating to the manufacture of steel
AT230638B (en) Process for the production of magnesium
DE548464C (en) Process for processing manganese-containing tungsten ores on ferrous tungsten
DE1224343B (en) Process for the production of low-sulfur ferrochrome
DE732696C (en) Process for the enrichment of manganese in slag
DE685623C (en) Process for decoppering copper-containing pig iron and copper-containing iron scrap
DE334065C (en) Process for the production of molybdenum, vanadium and tungsten-iron alloys
US771645A (en) Method of decarburizing metals or alloys.
US1374037A (en) Process for the production of low-carbon ferrozirconium
SU141173A1 (en) Manganese alloy
DE2042034A1 (en) Cast iron including ductile cast iron prodn - from steel scrap briquettes contg silicon and carbon
AT83172B (en) Process for the production of ferrosilicon.
DE600772C (en) Process for the production of low carbon metals
DE588842C (en) Device for electric arc welding of aluminum and aluminum-containing alloys
DE331700C (en) Process for the production of pure, more or less carbonized synthetic castings