DE488929C - Process for the production of artificial graphite by electrically heating carbonaceous materials - Google Patents

Process for the production of artificial graphite by electrically heating carbonaceous materials

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Publication number
DE488929C
DE488929C DESCH78602D DESC078602D DE488929C DE 488929 C DE488929 C DE 488929C DE SCH78602 D DESCH78602 D DE SCH78602D DE SC078602 D DESC078602 D DE SC078602D DE 488929 C DE488929 C DE 488929C
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DE
Germany
Prior art keywords
production
artificial graphite
carbonaceous materials
electrically heating
coal
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
DESCH78602D
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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.)
MAX SCHAIDHAUF DR ING
Original Assignee
MAX SCHAIDHAUF DR ING
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 MAX SCHAIDHAUF DR ING filed Critical MAX SCHAIDHAUF DR ING
Priority to DESCH78602D priority Critical patent/DE488929C/en
Application granted granted Critical
Publication of DE488929C publication Critical patent/DE488929C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

Verfahren zur Herstellung von Kunstgraphit durch elektrische Erhitzung kohlenstoffhaltiger Materialien Die Herstellung von Kunstgraphit geschieht bekanntlich durch elektrische Erhitzung von Kohle, indem man die Kohlemasse als Widerstand in einen elektrischen Stromkreis mit hoher Amperezahl schaltet. Man hat dazu bisher Anthrazit, Steinkohle, Petrolkoks; Holzkohle verwendet. Dabei hat es sich als nötig erwiesen, diese Materialien. bis auf Rep;skorngrö.ße zu zerkleinern und gewisse Metalle oder deren Oxyde, wie Eisen, Titan, Bor usw., beizumischen, um durch Katalyse die Umwandlung 3.n. Graphit zu erleichtern. Es zeigte sich hierbei, daß mit den genannten Kohlesorten sehr weiche Graphite mit weniger als o, i % Aschengehalt nur schwierig und nur nach sehr langem Erhitzen zu erhalten sind.Process for the production of artificial graphite by means of electrical heating Carbon-containing materials As is well known, the production of artificial graphite occurs by electrically heating coal by using the coal mass as a resistor in switches an electrical circuit with a high amperage. You have to do this so far Anthracite, coal, petroleum coke; Uses charcoal. It has proven to be necessary proven these materials. up to rep; chop size to be crushed and certain Metals or their oxides, such as iron, titanium, boron, etc., to be mixed in by catalysis the transformation 3.n. Graphite to facilitate. It turned out that with the mentioned types of coal are very soft graphites with less than 0.1% ash content only difficult and can only be obtained after heating for a very long time.

Es wurde nun die überraschende Beobachtung gemacht, daß es mit Leichtigkeit gelingt, Graphit von einer unübertrefflichen Weichheit mit weit unter o, i olo Aschengehalt zu erzeugen, wenn man als Ausgangsmaterial die sogenannte Retortenkohle verwendet. Es ist dies eine Kohle, die sich infolge der Zersetzung von Kohlenwasserstoffen in. den heißen Kohleretorten und deren Rohrleitungen der Gasanstalten absetzt und in Form von derben, außerordentlich harten Stücken in den Handel kommt. Es hat sich herausgestellt, daß diese Kohle, trotzdem sie die bÄrtesta aller bekannten Kohlesorten verkörpert, die merkwürdige Eigenschaft besitzt, im elektrischen Ofen sich wesentlich rascher in Graphit unizuwandeln als irgendwelche andere Kohlesorten, die bis jetzt verwendet wurden. Dabei ist diese Umwandlung. in Graphit eine derart günstige und vollständige, daß es gar nicht nötig ist, die Retortenkohle vor der Beschickung des elektrischen Ofens zu granulieren. Man kann sie in Stücken von: ->o bis 30 mm Größe direkt zur Begchickung verwenden, ohne im geringsten eine unvol`,fständige Graphitierumg befürchten zu müssen. Die Retortenkohle zeigt sich. bei der Umwandlung in Graphit im Gegensatz zu anderen Kohlesorten die höichst bemerkenswerte Eigenschaft, daß sie sich auf das zwei- bis vierfache Volmnen der -ursprünglichen Kohlestückchen vergrößert. Mit dieser Volumenvergrößerung hängt es wahrscheinlich zusammen, daß der dabei entstehende Graphit von einer Weichheit und Gescbinddigkeif ist, die bei Anwendung anderer Kohlesorten nicht zu Herreichen sind.The surprising observation has now been made that it is easy to produce graphite of an unsurpassable softness with an ash content far below 0.150 if the so-called retort carbon is used as the starting material. This is a coal which, as a result of the decomposition of hydrocarbons, is deposited in the hot coal pies and their pipelines of the gas works and comes on the market in the form of coarse, extraordinarily hard pieces. It has been found that this charcoal, although it embodies the beardest of all known types of charcoal, has the remarkable property of turning into graphite in the electric furnace much more quickly than any other charcoal that has hitherto been used. There is this transformation. in graphite it is so cheap and complete that it is not even necessary to granulate the retort carbon before charging the electric furnace. You can use them in pieces of: -> o to 30 mm in size directly for loading, without having to worry in the least about incomplete graphitization. The retort carbon shows up. In the transformation into graphite, in contrast to other types of coal, the most remarkable property is that it increases to two to four times the volume of the original pieces of coal. This increase in volume is probably connected with the fact that the resulting graphite is of a softness and consistency which cannot be achieved when using other types of coal.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Kunstgraphit durch elektrische Erhitzung kohlenstoffhaltiger Materialien, dadurch gekennzeichnet, daß Retortenkohle unter Verzicht auf den Zuschlag von; Stoffen, wie Kieselsäure u. e1, der elektri;gcbien Behandlung nach üblichen Methoden unterworfen wird. PATENT CLAIM: Process for the production of artificial graphite by electrical heating of carbonaceous materials, characterized in that retort carbon without adding; Substances such as silicic acid and e1, which are subjected to electrical treatment according to customary methods.
DESCH78602D 1926-04-20 1926-04-20 Process for the production of artificial graphite by electrically heating carbonaceous materials Expired DE488929C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH78602D DE488929C (en) 1926-04-20 1926-04-20 Process for the production of artificial graphite by electrically heating carbonaceous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH78602D DE488929C (en) 1926-04-20 1926-04-20 Process for the production of artificial graphite by electrically heating carbonaceous materials

Publications (1)

Publication Number Publication Date
DE488929C true DE488929C (en) 1930-01-10

Family

ID=7441666

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH78602D Expired DE488929C (en) 1926-04-20 1926-04-20 Process for the production of artificial graphite by electrically heating carbonaceous materials

Country Status (1)

Country Link
DE (1) DE488929C (en)

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