AT35227B - Process for the production of blackness from coal. - Google Patents

Process for the production of blackness from coal.

Info

Publication number
AT35227B
AT35227B AT35227DA AT35227B AT 35227 B AT35227 B AT 35227B AT 35227D A AT35227D A AT 35227DA AT 35227 B AT35227 B AT 35227B
Authority
AT
Austria
Prior art keywords
blackness
coal
production
water
fine
Prior art date
Application number
Other languages
German (de)
Original Assignee
Koepp & Co R
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
Priority claimed from DE1906195292D external-priority patent/DE195292C/de
Application filed by Koepp & Co R filed Critical Koepp & Co R
Application granted granted Critical
Publication of AT35227B publication Critical patent/AT35227B/en

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  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Description

  

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 Durch die erhöhte Temperatur werden die fraglichen kohlenstoffreichen Zwischenprodukte vollkommen in wasserlösliche Verbindungen verwandelt. Die noch kompakten feinen Kohlenteilchen sind infolgedessen nach der Calcinierung mit den besagten Alkaliverbindungen in trockenem Zustande durchsetzt. Ihre noch fest zusammenhängende Struktur wird dadurch so gelockert, dass bei der   nun folgenden Trockenmahlung   ein   vollkommener   Zerfall in ganz kurzer Zeit herbeigeführt wird.. 



   Bei der nun folgenden Behandlung des äusserst feinen Pulvers mit Wasser lösen sich die   Alkaliverbindungen   zu einer schwarzbraunen Flüssigkeit auf. Aus dieser Lösung werden durch Säuren die kohlenstoffreichen Verbindungen in ungewöhnlich hohem Feinheitsgrade als flockige Niederschläge wieder vollkommen ausgeschieden. Diese amorphen stoffe durchsetzen nun die in sehr hohem Feinheitsgrade vorhandenen vorher nicht   gelösten Kohlenteilchen   derart, dass nach dem   Auswaschen, Trocknen und Zerteilen   der Masse eine Schwärze von vollkommen   amorphem   Aussehen und hoher Deckkraft erhalten wird. 



   Um eine Schwärze von besonderer Qualität zu erzielen, kann man auch die aus der calcinierten Masse durch Auslaugen mit Wasser   erzielte Lösung   von den nicht gelösten Kohleteilchen trennen und sie dann mit verdünnter Säure behandeln, worauf die gelösten Stoffe in feinen Flocken ausfallen. Diese werden mit Wasser ausgewaschen und lassen sich dann nach dem Trocknen zu feinstem Pulver vermahlen. 



   Die nicht gelösten   Teile kann man   dann von den gelösten getrennt ebenfalls zu feiner   Schwärze vermählen. 



  PATENT-ANSPRACHE :   
1. Verfahren zur Herstellung von Schwärze aus Steinkohle durch Behandeln der letzteren mit   Ätzalkalien in   einer Mühle und darauffolgende Calcinierung, dadurch   gekennzeichnet,   dass man das Mahlgut so wie es aus der Mühle kommt, also ohne vorherige Trennung von der alkalischen
Lauge, calciniert, die calcinierte Masse mit Wasser versetzt, mit verdünnter Säure   behandelt.     die untöslichen Bestandteile   von der Lösung trennt, trocknet und vermahlt. 
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 Due to the increased temperature, the carbon-rich intermediates in question are completely converted into water-soluble compounds. The still compact fine coal particles are consequently permeated with the alkali compounds in the dry state after calcination. Their still firmly coherent structure is loosened so that with the following dry grinding a complete disintegration is brought about in a very short time



   During the subsequent treatment of the extremely fine powder with water, the alkali compounds dissolve to form a black-brown liquid. The carbon-rich compounds are completely eliminated from this solution in an unusually high degree of fineness as flaky precipitates by acids. These amorphous substances now penetrate the previously undissolved coal particles, which are present in a very high degree of fineness, in such a way that after washing, drying and dividing the mass, a blackness with a completely amorphous appearance and high opacity is obtained.



   In order to achieve a blackness of particular quality, the solution obtained from the calcined mass by leaching with water can also be separated from the undissolved coal particles and then treated with dilute acid, whereupon the dissolved substances precipitate in fine flakes. These are washed out with water and can then be ground to the finest powder after drying.



   The undissolved parts can then be ground separately from the loosened parts to a fine blackness.



  PATENT APPROACH:
1. A process for the production of blackness from coal by treating the latter with caustic alkalis in a mill and subsequent calcination, characterized in that the grist is as it comes from the mill, so without prior separation from the alkaline
Lye, calcined, the calcined mass is mixed with water, treated with dilute acid. the insoluble components are separated from the solution, dried and ground.
 EMI2.2


 
AT35227D 1906-03-22 1908-02-10 Process for the production of blackness from coal. AT35227B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1906195292D DE195292C (en) 1906-03-22

Publications (1)

Publication Number Publication Date
AT35227B true AT35227B (en) 1908-11-25

Family

ID=5748750

Family Applications (1)

Application Number Title Priority Date Filing Date
AT35227D AT35227B (en) 1906-03-22 1908-02-10 Process for the production of blackness from coal.

Country Status (1)

Country Link
AT (1) AT35227B (en)

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