DE2118661A1 - Water glass from quartz and caustic alkali - in aq soln at moderate temp and press - Google Patents

Water glass from quartz and caustic alkali - in aq soln at moderate temp and press

Info

Publication number
DE2118661A1
DE2118661A1 DE19712118661 DE2118661A DE2118661A1 DE 2118661 A1 DE2118661 A1 DE 2118661A1 DE 19712118661 DE19712118661 DE 19712118661 DE 2118661 A DE2118661 A DE 2118661A DE 2118661 A1 DE2118661 A1 DE 2118661A1
Authority
DE
Germany
Prior art keywords
quartz
soln
water glass
caustic alkali
press
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.)
Pending
Application number
DE19712118661
Other languages
German (de)
Inventor
Der Anmelder Ist
Original Assignee
Spalink, Fritz, Dr., 4044 Kaarst
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 Spalink, Fritz, Dr., 4044 Kaarst filed Critical Spalink, Fritz, Dr., 4044 Kaarst
Priority to DE19712118661 priority Critical patent/DE2118661A1/en
Publication of DE2118661A1 publication Critical patent/DE2118661A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/32—Alkali metal silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

Alkali silicates in aq. soln. are produced by reacting finely ground quartz sand with aq. caustic alkali under slight pressure at about 160 degrees C. The process is carried out continuously in a heated and stirred reactor, the reactants being introduced through a liquid column producing hydrostatically the pressure required. In this same column the heat of reaction is passed to the entering reactants by countercurrent exchange.

Description

Verfahren und Apparatur zur Herstellung von Alkalnsilikaten aus gemahlenem Quarzstand und Alkalilauge Das konventionelle Verfahren zur Herstellung von Washergläsern beruht auf Techniken, die schon sehr alt sind: Quarzsand und Soda werden bei ca 1500°C unter hohem Aufwand an Energie geschmolzen und das entstandene Natriumsilikat wieder abgekühlt.Process and apparatus for the production of alkali metal silicates from ground Quartz stand and alkali lye The conventional process for making washer glasses is based on techniques that are very old: Quartz sand and soda are used at approx 1500 ° C melted with a high expenditure of energy and the resulting sodium silicate cooled down again.

Das glasartige Material wird dann zerkleinert und anschließend in Druckkesseln unter Energieaufwand gelöst.The vitreous material is then crushed and then put into Pressure vessels released with the use of energy.

Das oben beschriebene Verfahren läßt sich in energetischer und anlagentechnischer Minsichte vereinfachen. Der erste Abschnitt des obigen Verfahrens kann dadurch wegfallen, daß man die Teilchengröße von Quarzsand verringert und anstelle von Soda Alkalilauge verwendet. Dann genügt ein Behandeln von Quarzmehl mit Natronlauge unter geringem Druck und Temperatur von ca 160°C, um die Mischung in wasserglas zu überführen.The process described above can be broken down into energetic and plant engineering Simplify minutiae. The first section of the above procedure can be omitted by that one reduces the particle size of quartz sand and instead of soda alkali used. Then treating quartz flour with caustic soda is sufficient Pressure and temperature of about 160 ° C to transfer the mixture into a water glass.

Diese an sich bekannte Tatsache Iäßt sich mit relativ geringem Aufwand in einen großtechnischen Maßstab überführen, wein man den Auflösaprozeß in einem mehrkammerigen geschlossenen beheizten und rührbaren Druckgefäß (aeaktor) nach dem Durchflußverfahren vor sich gehen läßt. Da sich gemahlener Quarzsand in Alkalilauge mit zufriedenstellender Geschwindigkeit nur unter uruck bei Temperaturen über dem Siedepunkt von Alkalilauge auflöst, bereitet die kontinuierliche Zufährung von Quarzmehl mitte@s Pumpen wegen der reibenden Eigenschaften von Quarzmehl Schwierickeiten. Der erforderliche Druck wird erfindungsgemäß hydrostatisch dadurch erzeugt, daß das Zufährungs-bzw. Ableitungsrohr ca 7 m über dea Reaktor hinaus verlangert wird. In das Zufuhrungsrohr werden Quarzmend und Alkalilauge drucklos eintragen. Die Zu- und Ableitungsrohre können zusatzlich so ausgebildet werden, daß ein wärmeaustausch zwischen zugeführter Mischung und dem Wasserglas stattfindet.This fact, which is known per se, can be achieved with relatively little effort Transferred to a large-scale technical scale, one sees the dissolution process in one multi-chambered closed heated and stirrable pressure vessel (aeactor) after the Flow process can go on. Because ground quartz sand is in alkali with satisfactory speed only under uruck at temperatures above that Dissolves boiling point of alkali, prepares the continuous supply of quartz flour mitte @ s pumps difficulties because of the abrasive properties of quartz powder. According to the invention, the required pressure is generated hydrostatically in that the feed or. The discharge pipe is extended approx. 7 m beyond the reactor. Quartz melt and alkali lye are placed in the supply pipe pressureless enter. The inlet and outlet pipes can also be designed in such a way that that there is an exchange of heat between the mixture supplied and the water glass.

Patentansprüche 1. Verfahren und Apparatur zur kontinuierlichen Herstellung voll wässrigem Alkalisilikat, dadurch gekennzeichnet, daß das Gemisch aus gemahlenem Quarzsand/Alkalilauge kontinuierlich über eine hydrostatische Flüssigkeitssäule dem beheitzen und mit Kährwerk ausgerästetem Reaktor zugeführt und das fertige Wasserglas über eine hydrostatische Flüssigkeitssäule abgeführt werden. Claims 1. Process and apparatus for continuous production fully aqueous alkali silicate, characterized in that the mixture of ground Quartz sand / alkali lye continuously through a hydrostatic liquid column fed to the heated and equipped with a Kährwerk reactor and the finished water glass can be discharged via a hydrostatic liquid column.

Claims (1)

2. Verfahren und Apparatur zur kontinuierlichen Nerstellung von wässrigem Alkalisilikat, dadurch gekennzeichnet, daß die warme des abgeführten Alkalisilikates iln gegenstrom auf das Gemisch Quarzmehl/ Alkalilauge übertragen wird.2. Process and apparatus for the continuous production of aqueous Alkali silicate, characterized in that the warmth of the discharged alkali silicate is transferred in countercurrent to the quartz powder / alkali lye mixture.
DE19712118661 1971-04-17 1971-04-17 Water glass from quartz and caustic alkali - in aq soln at moderate temp and press Pending DE2118661A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712118661 DE2118661A1 (en) 1971-04-17 1971-04-17 Water glass from quartz and caustic alkali - in aq soln at moderate temp and press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712118661 DE2118661A1 (en) 1971-04-17 1971-04-17 Water glass from quartz and caustic alkali - in aq soln at moderate temp and press

Publications (1)

Publication Number Publication Date
DE2118661A1 true DE2118661A1 (en) 1972-11-02

Family

ID=5804969

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712118661 Pending DE2118661A1 (en) 1971-04-17 1971-04-17 Water glass from quartz and caustic alkali - in aq soln at moderate temp and press

Country Status (1)

Country Link
DE (1) DE2118661A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027849A1 (en) * 1979-07-25 1981-02-12 Ugine Kuhlmann METHOD FOR PRODUCING SODIUM SILICATE
EP0066214A1 (en) * 1981-05-30 1982-12-08 Henkel Kommanditgesellschaft auf Aktien Continuous process for reacting components in the liquid phase with granular-shape components
EP0033109B1 (en) * 1980-01-26 1983-04-20 Henkel Kommanditgesellschaft auf Aktien Process for the hydrothermal production of sodium silicate solutions in a static reaction vessel
EP0085867A1 (en) * 1982-01-26 1983-08-17 Hoechst Aktiengesellschaft Process for continously producing sodium metasilicate
JPS616120A (en) * 1984-06-20 1986-01-11 Kouichi Suematsu Manufacture of alkali silicate
CN111672448A (en) * 2020-04-30 2020-09-18 洛阳市奇航化工有限公司 Reaction device applied to sodium silicate continuous production process

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027849A1 (en) * 1979-07-25 1981-02-12 Ugine Kuhlmann METHOD FOR PRODUCING SODIUM SILICATE
FR2462390A1 (en) * 1979-07-25 1981-02-13 Ugine Kuhlmann PROCESS FOR PRODUCING SODIUM SILICATE
DK151220B (en) * 1979-07-25 1987-11-16 Ugine Kuhlmann PROCEDURE FOR CONTINUOUS INDUSTRIAL PREPARATION OF A SODIUM SILICATE SOLUTION
EP0033109B1 (en) * 1980-01-26 1983-04-20 Henkel Kommanditgesellschaft auf Aktien Process for the hydrothermal production of sodium silicate solutions in a static reaction vessel
EP0066214A1 (en) * 1981-05-30 1982-12-08 Henkel Kommanditgesellschaft auf Aktien Continuous process for reacting components in the liquid phase with granular-shape components
EP0085867A1 (en) * 1982-01-26 1983-08-17 Hoechst Aktiengesellschaft Process for continously producing sodium metasilicate
JPS616120A (en) * 1984-06-20 1986-01-11 Kouichi Suematsu Manufacture of alkali silicate
CN111672448A (en) * 2020-04-30 2020-09-18 洛阳市奇航化工有限公司 Reaction device applied to sodium silicate continuous production process

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