AT236279B - Process for melting quick lime and / or dolomite - Google Patents

Process for melting quick lime and / or dolomite

Info

Publication number
AT236279B
AT236279B AT37063A AT37063A AT236279B AT 236279 B AT236279 B AT 236279B AT 37063 A AT37063 A AT 37063A AT 37063 A AT37063 A AT 37063A AT 236279 B AT236279 B AT 236279B
Authority
AT
Austria
Prior art keywords
dolomite
quick lime
melting quick
melting
furnace
Prior art date
Application number
AT37063A
Other languages
German (de)
Original Assignee
Kempten Elektroschmelz Gmbh
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 Kempten Elektroschmelz Gmbh filed Critical Kempten Elektroschmelz Gmbh
Application granted granted Critical
Publication of AT236279B publication Critical patent/AT236279B/en

Links

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  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Description

  

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  Verfahren zum Schmelzen von gebranntem Kalk und/oder Dolomit 
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    oderBeispiel :   In einem Blechschacht von 70 cm Breite, 90 cm Länge und 80 cm Höhe wurde kleinstückiger, gebrannter Kalk mit einer Korngrösse unter 80 mm etwa 300 mm hoch eingebracht. Nach dem Anfahren des Ofens durch Verbindung der beiden 150 mm starken Elektroden mit einer dünnen, 20 mm starken Graphitelektrode wurde die Spannung von 80 Volt auf 160 Volt hochgeschaltet. Dabei wurden grosse Stücke von gebranntem Kalk in den Ofen eingebracht. Der Ofen nahm 3000 Ampere auf und wurde laufend mit grossen Stücken bedeckt. Nach ungefähr 1 h wurde abgestellt. Beim Abbau des Ofens nach dem Auskühlen wurden 170 kg eines einwandfrei geschmolzenen Materials erhalten. 



    PATENTANSPRÜCHE :    
1. Verfahren zum Schmelzen von gebranntem Kalk   und/oder   Dolomit im elektrischen Lichtbogen mit Kohle- oder Graphitelektroden, dadurch gekennzeichnet, dass ein Verhältnis zwischen Spannung (Volt) und Stromstärke (Ampère) im Bereich von 1 : 5 bis 1 : 40 angewendet wird und die aufgegebenen Stücke eine Mindestgrösse von etwa 80 mm aufweisen.



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  Process for melting quick lime and / or dolomite
 EMI1.1
 

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    orExample: In a metal shaft 70 cm wide, 90 cm long and 80 cm high, small pieces of quicklime with a grain size of less than 80 mm were placed about 300 mm high. After starting up the furnace by connecting the two 150 mm thick electrodes with a thin, 20 mm thick graphite electrode, the voltage was increased from 80 volts to 160 volts. Large pieces of quicklime were put into the furnace. The furnace took 3000 amps and was continuously covered with large pieces. It was turned off after about 1 hour. When the furnace was dismantled after cooling, 170 kg of a perfectly molten material were obtained.



    PATENT CLAIMS:
1. A method for melting quick lime and / or dolomite in an electric arc with carbon or graphite electrodes, characterized in that a ratio between voltage (volts) and current strength (amperes) in the range of 1: 5 to 1:40 is used and the pieces submitted have a minimum size of around 80 mm.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass kontinuierlich oder diskontinuierlich, gearbeitet wird. 2. The method according to claim 1, characterized in that it is carried out continuously or discontinuously. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass im Abstichbetrieb die freifliessende Schmelze etwa 2-3 m Luft durchfällt, bevor sie in die Abstichwanne gelangt. 3. The method according to claims 1 and 2, characterized in that in the tapping operation the free-flowing melt falls through about 2-3 m of air before it gets into the tapping trough.
AT37063A 1962-03-06 1963-01-17 Process for melting quick lime and / or dolomite AT236279B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE236279X 1962-03-06

Publications (1)

Publication Number Publication Date
AT236279B true AT236279B (en) 1964-10-12

Family

ID=5901070

Family Applications (1)

Application Number Title Priority Date Filing Date
AT37063A AT236279B (en) 1962-03-06 1963-01-17 Process for melting quick lime and / or dolomite

Country Status (1)

Country Link
AT (1) AT236279B (en)

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