DE19545065C2 - Process for the continuous production of foam glass - Google Patents
Process for the continuous production of foam glassInfo
- Publication number
- DE19545065C2 DE19545065C2 DE1995145065 DE19545065A DE19545065C2 DE 19545065 C2 DE19545065 C2 DE 19545065C2 DE 1995145065 DE1995145065 DE 1995145065 DE 19545065 A DE19545065 A DE 19545065A DE 19545065 C2 DE19545065 C2 DE 19545065C2
- Authority
- DE
- Germany
- Prior art keywords
- glass
- foam glass
- melt
- foam
- continuous production
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Schaumglas in vorzugsweise flächiger Form.The invention relates to a method for manufacturing of foam glass in preferably flat form.
Schaumglas läßt sich trotz seiner Festigkeit leicht durch Schneiden, Sägen usw. bearbeiten und ist ein be sonders fester Wärmeisolationsstoff.Foam glass is easy to use despite its strength by cutting, sawing, etc. and is a be particularly strong heat insulation fabric.
In der Patentschrift DE-PS 745 773 ist ein Verfahren beschrieben, wobei körniges Glas (Glaspulver) in einer Kammer unter Zuführen eines unter Überdruck stehenden Gases bis zur Sintertemperatur erhitzt wird. Das körnige Glas wird jedoch während des Sinterns und der Hohlraumbildung zusätzlich einem äußeren Druck unterworfen und der so entstandene Sinterkörper dann einer nachfolgenden Erhitzung auf höhere Temperatur zwecks Ausdehnung der Zellen ausgesetzt.In the patent DE-PS 745 773 a method is described, wherein granular glass (glass powder) in a chamber while feeding one under Overpressure gas is heated up to the sintering temperature. The granular glass, however, becomes during sintering and cavitation additionally subjected to external pressure and the resulting pressure Sintered body then a subsequent heating to a higher temperature exposed to expand the cells.
Seit mehreren Jahren sind Verfahren zur Herstellung von Schaumglas unter Verwendung von Treibmitteln bekannt, und es wurde bisher Schaumglas aus feinge mahlenem Glas, Mineralien, Mischsilikaten usw. unter Zugabe von Treibmitteln hergestellt.There have been manufacturing processes for several years of foam glass using blowing agents known, and it has been made of fine foam glass ground glass, minerals, mixed silicates etc. under Addition of blowing agents.
Bei dem in der Patentschrift DE 30 36 516 A1 be schriebenen Verfahren werden die bekannten Grund stoffe mit den gasbildenden Stoffen gemeinsam in ein Druckgefäß eingegeben und solange erhitzt, bis eine homogene Schmelze entsteht und dabei die gasbilden den Stoffe ausgasen.In the be in the patent DE 30 36 516 A1 The methods written become the known reason substances together with the gas-forming substances Enter the pressure vessel and heat until one homogeneous melt is formed and the gas forms outgas the substances.
Die reagierenden Stoffe müssen dabei ständig unter einem Überdruck gehalten werden, der genügend hoch ist, um ein Austreten des gebildeten Gases aus der Mi schung zu verhindern. Durch Abkühlung der Schmelze tritt eine Erhöhung ihrer Zähigkeit ein und bei Austritt in die Atmosphäre wird die Schmelze aufgeschäumt.The reacting substances must be constantly under an overpressure that is sufficiently high is to escape the gas formed from the Mi prevention. By cooling the melt there occurs an increase in their toughness and upon leaving the melt is foamed into the atmosphere.
Nachteilig bei allen bekannten Verfahren zur Schaumglasherstellung ist die Verwendung von gasbil denden Schäumungsstoffen.A disadvantage of all known methods for Foam glass production is the use of gas bil foaming agents.
Nach dem in der Patentschrift 17 71 326 beschriebenen Verfahren zur kontinuierlichen Herstellung von Schaumglas wird nach der Mischung von Pulverglas und einem Schäumungsmittel dieses Gemisch zunächst in nichtoxidierter Atmosphäre auf einem Band versintert und anschließend zum Schäumen gebracht.After that described in the patent specification 17 71 326 Process for the continuous production of Foam glass is made after mixing powder glass and a foaming agent this mixture in Sintered non-oxidized atmosphere on a belt and then made to foam.
Dabei muß das Glas vorher fein gemahlen sein und vor Eintritt in den Tunnelofen mit dem Treibmittel ho mogen vermischt werden. Dieses Vermischen des Gla ses mit den Treibmitteln geschieht meist mechanisch, was die geforderte Homogenität des Gemisches nicht immer gewährleistet.The glass must be finely ground beforehand and before entering the tunnel furnace with the blowing agent ho may be mixed. This mixing of the gla Most of the blowing agents are mechanical, which does not require the required homogeneity of the mixture always guaranteed.
Danach wird dem Gemisch im Tunnelofen Wärme von außen zugeführt.The mixture is then heated in the tunnel kiln fed from the outside.
Bei Anwendung dieser bekannten Verfahren wurde das Glaspulver zuerst fein gemahlen, mit den eingesetz ten Treibmitteln homogen vermischt, anschließend ge sintert und letztlich solange erwärmt, bis der erwünsch te Verschäumungsgrad erreicht war. Nach den bekann ten Verfahren wurde das Sintern und Schäumen des Schaumglases bisher in beheizten Formen sowie in Tun nelöfen bzw. in Kammeröfen durchgeführt. Die nach diesen bekannten Verfahren gefertigten Schaumglas körper wurden nach ihrer Abkühlung aus der Form ent nommen und weiterbearbeitet.Using these known methods the glass powder finely ground first, with the inserted th blowing agent mixed homogeneously, then ge sinters and ultimately warms until desired te degree of foaming was reached. After the known The sintering and foaming of the Foam glass so far in heated molds and in tuns or in chamber furnaces. The after this known method manufactured foam glass bodies were removed from the mold after they had cooled taken and further processed.
Aufgabe der Erfindung ist es, die bekannten Verfah ren dahingehend zu verbessern, daß die gasbildenden Schäumungsstoffe, deren Wirkung durch chemische Re aktionen bzw. durch physikalische Vorgänge hervorge rufen wird, wie beispielsweise Aggregatzustandswech sel, durch Stoffe ersetzt werden können, welche ökolo gisch unbedenklich sind und durch deren Auswahl die späteren Eigenschaften des Schaumglases beeinflußt werden.The object of the invention is the known procedure ren to improve that the gas-generating Foaming agents, the effect of which by chemical Re actions or through physical processes will call, such as change of state sel, can be replaced by fabrics that are ecological are harmless and by their selection the influenced later properties of the foam glass become.
Erfindungsgemäß wird das Verfahren in folgender
Weise ausgestaltet:
Die zur Herstellung von Schaumglas eingesetzten be
kannten Grundstoffe wie Glaspulver bzw. Glasstücke,
Mineralien, Mischsilikate, Glasbildner und anderes auf
schäumendes Material werden gebrochen oder pulveri
siert einem Extruder zugegeben und in diesem auf- bzw.
eingeschmolzen.According to the invention, the method is designed as follows:
The known basic materials used for the production of foam glass such as glass powder or glass pieces, minerals, mixed silicates, glass formers and other foaming material are broken or pulverized added to an extruder and melted or melted in it.
Erfindungsgemäß kommen in dem Verfahren gasför mige Zusatzstoffe als Treibmittel zum Einsatz.According to the invention, gas is produced in the process Additives are used as blowing agents.
Diese gasförmigen Zusatzstoffe werden in den Extru der, welcher durch die kontinuierliche Zuführung der Grundstoffe auf seiner einen Seite und durch die eben falls kontinuierliche Abführung der Schmelze, Lösung, Emulsion oder des Gemisches auf seiner anderen Seite ein geschlossenes System bildet, dosiert eingeblasen und durch den sich im Inneren des Extruders durch die Rota tion der Extruderschnecke bzw. -schnecken aufbauen den Druck in der Glasschmelze als Schäumungsmittel aufgenommen.These gaseous additives are in the extru the one which by the continuous supply of the Basic materials on one side and through that if continuous removal of the melt, solution, Emulsion or the mixture on its other side forms a closed system, dosed in and through the inside of the extruder through the rota Set up the extruder screw or screws the pressure in the glass melt as a foaming agent added.
In einer besonderen Ausgestaltung des Erfindungsge dankens kann ökonomisch vorteilhaft Luft als gasförmi ger Zusatzstoff verwendet werden, welche innerhalb des Extruders in der Glasschmelze aufgenommen wird und nach einer eventuellen weiteren induktiven Erwär mung der Glasschmelze beim Zuführen in bspw. eine Form bei gleichzeitiger Druckminderung bei Austreten der Schmelze, Lösung, Emulsion oder des Gemisches aus dem Extruder die Schaumbildung in der Schmelze, Lösung, Emulsion oder dem Gemisch realisiert.In a special embodiment of the invention thanks to economically advantageous air as gaseous ger additive can be used, which within of the extruder is taken up in the glass melt and after a possible further inductive heating Melting the glass melt when feeding in, for example Shape with simultaneous pressure reduction when exiting the melt, solution, emulsion or mixture foam formation in the melt from the extruder, Solution, emulsion or the mixture realized.
Um bestimmte, entsprechend dem Verwendungs zweck des Schaumglases gewünschte Eigenschaften bei demselben zu erzeugen, werden als Schäumungsmittel Gase ausgewählt, welche durch ihre Eigenschaften oder ihnen eigene Reaktion mit der Glasschmelze, Lösung, Emulsion oder dem Gemisch die Eigenschaften des Schaumglases steuerbar beeinflussen.To certain, according to the usage purpose of the foam glass desired properties To produce the same are used as foaming agents Gases selected by their properties or their own reaction with the glass melt, solution, Emulsion or the mixture the properties of the Control foam glass controllably.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995145065 DE19545065C2 (en) | 1995-12-02 | 1995-12-02 | Process for the continuous production of foam glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995145065 DE19545065C2 (en) | 1995-12-02 | 1995-12-02 | Process for the continuous production of foam glass |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19545065A1 DE19545065A1 (en) | 1997-06-05 |
DE19545065C2 true DE19545065C2 (en) | 2001-06-07 |
Family
ID=7779069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995145065 Expired - Fee Related DE19545065C2 (en) | 1995-12-02 | 1995-12-02 | Process for the continuous production of foam glass |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19545065C2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10214839A1 (en) * | 2002-04-04 | 2003-10-23 | Trovotech Gmbh | Production of biocompatible or bioactive glass and/or glass ceramics comprises melting, crushing or pulverizing the base materials, feeding to an extruder to which a foaming agent is added by the pressure in the glass melt, and foaming |
WO2012041804A2 (en) | 2010-09-30 | 2012-04-05 | Styron Europe Gmbh | Polymer compositions |
DE102011011884A1 (en) | 2011-02-21 | 2012-08-23 | Trovotech Gmbh | Doped porous, amorphous glass particles of continuously produced glass foam |
DE102012004357A1 (en) | 2012-03-07 | 2013-09-12 | Trovotech Gmbh | Flame retardant composition for thermoplastic polymers consisting of porous, amorphous glass powder and melamine cyanurate |
DE102015015710A1 (en) | 2015-12-07 | 2017-06-08 | Trovotech Gmbh | A complex halogen-free solid flame retardant composition for polymer molding compositions consisting of a reaction product of porous borosilicate glass particles produced by high-temperature extrusion and melting at low temperatures, melamine and ammonium nitrate and process for their preparation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004022779B4 (en) * | 2004-05-08 | 2007-06-06 | Trovotech Gmbh | Use of a method for producing antimicrobial glass particles |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE745773C (en) * | 1937-11-05 | 1944-05-26 | Corning Glass Works | Method and device for producing multicellular glass (foam glass) |
DE1771326C3 (en) * | 1967-05-20 | 1975-09-25 | Statni Vyzkumny Ustav Sklarske Techniky, Prag | Method and tunnel furnace for the continuous production of an uninterrupted foam glass ribbon |
DE3036516A1 (en) * | 1980-09-27 | 1982-05-13 | Sorg GmbH & Co KG, 8770 Lohr | Continuous mfr. of foamed materials, esp. foamed glass - where raw materials, e.g. oil shale, are melted in pressure vessel and then allowed to expand in atmos air |
-
1995
- 1995-12-02 DE DE1995145065 patent/DE19545065C2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE745773C (en) * | 1937-11-05 | 1944-05-26 | Corning Glass Works | Method and device for producing multicellular glass (foam glass) |
DE1771326C3 (en) * | 1967-05-20 | 1975-09-25 | Statni Vyzkumny Ustav Sklarske Techniky, Prag | Method and tunnel furnace for the continuous production of an uninterrupted foam glass ribbon |
DE3036516A1 (en) * | 1980-09-27 | 1982-05-13 | Sorg GmbH & Co KG, 8770 Lohr | Continuous mfr. of foamed materials, esp. foamed glass - where raw materials, e.g. oil shale, are melted in pressure vessel and then allowed to expand in atmos air |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10214839A1 (en) * | 2002-04-04 | 2003-10-23 | Trovotech Gmbh | Production of biocompatible or bioactive glass and/or glass ceramics comprises melting, crushing or pulverizing the base materials, feeding to an extruder to which a foaming agent is added by the pressure in the glass melt, and foaming |
DE10214839B4 (en) * | 2002-04-04 | 2004-12-23 | Trovotech Gmbh | Use of a process for the production of porous biocompatible glasses or glass ceramics |
WO2012041804A2 (en) | 2010-09-30 | 2012-04-05 | Styron Europe Gmbh | Polymer compositions |
DE102011011884A1 (en) | 2011-02-21 | 2012-08-23 | Trovotech Gmbh | Doped porous, amorphous glass particles of continuously produced glass foam |
WO2012113525A1 (en) | 2011-02-21 | 2012-08-30 | Trovotech Gmbh | Doped porous, amorphous glass particles made of continuously produced glass foam |
DE102012004357A1 (en) | 2012-03-07 | 2013-09-12 | Trovotech Gmbh | Flame retardant composition for thermoplastic polymers consisting of porous, amorphous glass powder and melamine cyanurate |
WO2013131545A1 (en) | 2012-03-07 | 2013-09-12 | Trovotech Gmbh | Flame retardant composition for thermoplastic polymers consisting of porous, amorphous glass powder and melamine cyanurate |
DE102015015710A1 (en) | 2015-12-07 | 2017-06-08 | Trovotech Gmbh | A complex halogen-free solid flame retardant composition for polymer molding compositions consisting of a reaction product of porous borosilicate glass particles produced by high-temperature extrusion and melting at low temperatures, melamine and ammonium nitrate and process for their preparation |
WO2017097385A1 (en) | 2015-12-07 | 2017-06-15 | Trovotech Gmbh | Complex halogen-free solid flame-retardant agent composition for polymer molding compounds, consisting of a reaction product of porous boron silicate glass particles which are produced by means of a high-temperature extrusion process and which melt at low temperatures, melamine, and ammonium nitrate, and method for producing same |
DE102015015710B4 (en) | 2015-12-07 | 2018-07-26 | Trovotech Gmbh | Complex halogen-free solid flame retardant composition, process for its preparation and polymer molding compositions and their use |
Also Published As
Publication number | Publication date |
---|---|
DE19545065A1 (en) | 1997-06-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: ABS ANHALTINISCHE BRAUNKOHLE SANIERUNGSGESELLSCHAF |
|
8127 | New person/name/address of the applicant |
Owner name: SELIG, HARALD, DIPL.-ING., 06847 DESSAU, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: TROVOTECH GMBH, 06766 WOLFEN, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |