DE257826C - - Google Patents

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Publication number
DE257826C
DE257826C DENDAT257826D DE257826DA DE257826C DE 257826 C DE257826 C DE 257826C DE NDAT257826 D DENDAT257826 D DE NDAT257826D DE 257826D A DE257826D A DE 257826DA DE 257826 C DE257826 C DE 257826C
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DE
Germany
Prior art keywords
alkali
water
chloride
reaction
under pressure
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Application number
DENDAT257826D
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German (de)
Publication of DE257826C publication Critical patent/DE257826C/de
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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/20Silicates
    • C01B33/32Alkali metal silicates

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Silicon Compounds (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Zur Darstellung von Wasserglas hat man bisher Kieselsäure mit Soda bzw. Pottasche und Kohle zusammen geschmolzen.So far, silica with soda or potash has been used to represent water glass and coal melted together.

Es wurde nun gefunden, daß man in bedeutend einfacherer Weise Wasserglas erhält, wenn man Kieselsäure in fein verteilter Form, z. B. feinen Sand oder Lehm; mit entsprechenden Mengen eines Alkalisalzes, z. B. Alkalichlorid oder Alkalisulfat, zusammen im Autoklaven unter Druck auf höhere Temperaturen erhitzt. Zur Erzeugung des erforderlichen Druckes im Autoklaven kann man das Gemisch vorteilhaft mit geringen Mengen Wasser zu einem sirupförmigen Brei anrühren.It has now been found that water glass is obtained in a much simpler manner if silica is used in finely divided form, e.g. B. fine sand or clay ; with appropriate amounts of an alkali salt, e.g. B. alkali chloride or alkali sulfate, heated together in the autoclave under pressure to higher temperatures. To generate the required pressure in the autoclave, the mixture can advantageously be mixed with small amounts of water to form a syrupy paste.

Bei Temperaturen von 400 bis 600 ° bildet sich dann im Verlauf von 6 bis 8 Stunden das betreffende Alkalisilikat und bei Verwendung eines Chlorids Salzsäure- bzw. bei höherem Druck Chlorgas bzw. bei Verwendung eines Sulfats Schwefelsäureanhydrid, die nach Beendigung der Reaktion durch Ablassen aus einem oberen Ventil entfernt werden.At temperatures of 400 to 600 ° it then forms in the course of 6 to 8 hours the alkali silicate in question and, if a chloride is used, hydrochloric acid or higher Pressure chlorine gas or, if a sulphate is used, sulfuric anhydride, which after termination the reaction can be removed by draining from an upper valve.

Das im Autoklaven verbleibende Wasserglas kann beliebiger Verwendung zugeführt werden.The water glass remaining in the autoclave can be put to any use.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung von wasserlöslichen Alkalisilikaten aus Kieselsäure und Alkalisalzen, dadurch gekennzeichnet, daß man eine eventuell mit wenig Wasser zu einem sirupösen Brei angerührte Mischung von feinpulveriger Kieselsäure (feinem Sand) und einem Alkälisalz, z. B. Alkalichlorid oder Alkalisulfat, im Autoklaven unter Druck auf 400 bis 600° C. bis zur Vollendung der Umsetzung erhitzt.Process for the preparation of water-soluble alkali silicates from silicic acid and Alkali salts, characterized in that one possibly with a little water a syrupy mixture of finely powdered silica (fine sand) and an alkali salt, e.g. B. alkali chloride or alkali sulfate, in the autoclave under Pressure heated to 400 to 600 ° C. until the reaction is complete.
DENDAT257826D Active DE257826C (en)

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488373B2 (en) 2002-03-05 2009-02-10 Statoil Asa Device and method for treating a gas/liquid mixture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488373B2 (en) 2002-03-05 2009-02-10 Statoil Asa Device and method for treating a gas/liquid mixture

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