AT8697B - Process for the extraction of pure graphite by the stepwise treatment of raw graphite with sulfuric acid and alkalis. - Google Patents

Process for the extraction of pure graphite by the stepwise treatment of raw graphite with sulfuric acid and alkalis.

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Publication number
AT8697B
AT8697B AT8697DA AT8697B AT 8697 B AT8697 B AT 8697B AT 8697D A AT8697D A AT 8697DA AT 8697 B AT8697 B AT 8697B
Authority
AT
Austria
Prior art keywords
graphite
sulfuric acid
alkalis
extraction
raw
Prior art date
Application number
Other languages
German (de)
Inventor
Hermann Dr Langbein
Original Assignee
Hermann Dr Langbein
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 DE1900125304D external-priority patent/DE125304C/de
Application filed by Hermann Dr Langbein filed Critical Hermann Dr Langbein
Application granted granted Critical
Publication of AT8697B publication Critical patent/AT8697B/en

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Description

  

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   Das erhaltene Gemisch von Schwefelsäure, schwefelsaurem Ammoniak und anderen schwefelsauren Salzen kann man auf leicht verwertbares, reines,   schwefelsaures   Ammoniak vorarbeiten ; man neutralisiert es mit Ammoniak, filtriert vom entstehenden Niederschlage ab und dampft das Filtrat ein. 



   Beim Einleiten von   Silkiumfluorid   in Ammoniakwasser erhält man neben Ammoniumfluorid   gallertartige Kieselsäure,   welche zur Herstellung von Wasserglas oder für die Thonindustrie Verwendung finden kann.



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   The resulting mixture of sulfuric acid, sulfuric acid ammonia and other sulfuric acid salts can be prepared for easily usable, pure, sulfuric acid ammonia; it is neutralized with ammonia, the resulting precipitate is filtered off and the filtrate is evaporated.



   When silicon fluoride is introduced into ammonia water, in addition to ammonium fluoride, gelatinous silica is obtained, which can be used for the production of water glass or for the clay industry.

Claims (1)

PATENT-ANSPRUCH : Abänderung des durch das Stammpatent Nr. 2542 geschützten Verfahrens zur Gewinnung von reinem Graphit aus rohem Graphit, darin bestehend, dass man an Stelle des rohen Graphits ein Gemisch desselben mit Ammoniumfluorid der stufenweisen Behandlung mit Schwefelsäure und Alkalilauge unterwirft. PATENT CLAIM: Modification of the process for the production of pure graphite from raw graphite, protected by the parent patent No. 2542, consisting in submitting a mixture of the same with ammonium fluoride to the stepwise treatment with sulfuric acid and alkali instead of the raw graphite.
AT8697D 1900-06-19 1901-11-02 Process for the extraction of pure graphite by the stepwise treatment of raw graphite with sulfuric acid and alkalis. AT8697B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1900125304D DE125304C (en) 1900-06-19
DE109533D 1900-12-09

Publications (1)

Publication Number Publication Date
AT8697B true AT8697B (en) 1902-08-11

Family

ID=25750491

Family Applications (1)

Application Number Title Priority Date Filing Date
AT8697D AT8697B (en) 1900-06-19 1901-11-02 Process for the extraction of pure graphite by the stepwise treatment of raw graphite with sulfuric acid and alkalis.

Country Status (1)

Country Link
AT (1) AT8697B (en)

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