DE704836C - Method and device for the production of fire-hardened moldings from wood particles cemented with water glass or the like. - Google Patents
Method and device for the production of fire-hardened moldings from wood particles cemented with water glass or the like.Info
- Publication number
- DE704836C DE704836C DEM144477D DEM0144477D DE704836C DE 704836 C DE704836 C DE 704836C DE M144477 D DEM144477 D DE M144477D DE M0144477 D DEM0144477 D DE M0144477D DE 704836 C DE704836 C DE 704836C
- Authority
- DE
- Germany
- Prior art keywords
- water glass
- fire
- production
- wood particles
- filler
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Description
Verfahren und Vorrichtung zur Herstellung von feuergehärteten Formstücken aus mit Wasserglas verkitteten Holzteilchen o. dgl. Gegenstand der vorliegenden Erfindung ist ein Verfahren und Vorrichtung zur Herstellung von leichten, porösen Formstücken (Platten, Ziegeln u. dgl.) unter Verwendung sperriger Holzfasern als Füllstoff und Wasserglas als Bindemittel.Method and device for the production of fire-hardened moldings from wood particles cemented with water glass o. The like. Subject of the present Invention is a method and apparatus for producing lightweight, porous Shaped pieces (plates, bricks, etc.) using bulky wood fibers as Filler and water glass as binders.
Es ist bekannt, Formstücke aus Holzwolle, Torf, Schilf, Kork o. dgl. als Füllstoff in Verbindung mit Gips, Zement, Sorelzement, Teer, Paraffin, Wasserglas als Bindemittel herzustellen. Es sind weiterhin Verfahren und dazugehörige Vorrichtungen bekannt, die Herstellung solcher Formstücke unter Einwirkung von Wärme (erhitzter Medien, wie Gas, Luft) innerhalb geschlossener Kammern durchzuführen und zu beschleunigen.It is known to use molded pieces made of wood wool, peat, reeds, cork or the like. as a filler in connection with plaster of paris, cement, sorel cement, tar, paraffin, water glass as a binder. There are also methods and associated devices known, the production of such fittings under the action of heat (heated Media, such as gas, air) to carry out and accelerate within closed chambers.
Alle diese bekannten Verfahren beanspruchen jedoch bis zur vollkommenen Abbindung und Trocknung der Formstücke -:einen ziemlich erheblichen Raum- und Zeitaufwand, der selbst bei Anwendung erhöhter Temperaturen für das Wärmemedium bis 40o° C und mehr nur wenig vermindert werden kann. Eine zu hoch gesteigerte Abbindetemperatur läßt jedoch erfahrungsgemäß die Formstücke bei den bisher bekannten Verfahren brüchig und dadurch unverwendbar und wertlos werden.However, all of these known methods claim to be perfect Setting and drying of the fittings -: a rather considerable expenditure of space and time, even when using elevated temperatures for the heating medium up to 40o ° C and more can only be reduced a little. Too high a setting temperature However, experience has shown that the fittings in the previously known methods are brittle and thereby become unusable and worthless.
Wasserglas hat an und für sich die Eigenschaft, die damit behandelten Faserstoffe ziemlich unempfindlich gegen Feuereinwirkung zu machen. Es hat ferner die Eigenschaft, sich in ein festes, steinähnliches, in Wasser unlösliches Gefüge zu verwandeln, sobald ,es kurze Zeit der direkten Einwirkung einer offenen Flamme ausgesetzt wird.Water glass in and of itself has the property that treated with it To make fibers quite insensitive to the effects of fire. It also has the property of being in a solid, stone-like structure that is insoluble in water to transform, once, there is a short time of direct exposure to an open flame is exposed.
Diese Eigenschaften werden erstmalig gemäß vorliegender Erfindung für die Herstellung von Formstücken bei dem Verfahren der Erfindung nutzbar gemacht.These properties are first used in accordance with the present invention made usable for the production of fittings in the method of the invention.
Die Herstellung der Formstücke gemäß der Erfindung geschieht wie folgt: Der auf bekannte Weise vorgerichtete Füllstoff wird hinreichend mit Wasserglas benetzt und anschließend einer maschinellen Formgebung, wie nachstehend beschrieben, unterzogen. Der wesentliche Unterschied gegenüber allen bisher bekannten Verfahren besteht darin, daß die Erhärtung des Formstückes nicht wie seither allmählich, sondern durch die Eigenart der direkten Flammeneinwirkung plötzlich erfolgt. Das Verfahren erfordert eine Vorrichtung, deren Aufbau und Arbeitsweise aus beiliegender Zeichnung zu ersehen ist und nachstehend beschrieben wird.The production of the shaped pieces according to the invention takes place as follows: The filler prepared in a known manner is sufficiently wetted with water glass and then subjected to machine shaping as described below. The main difference compared to all previously known methods is that that the hardening of the molding is not gradual, as it has been since then, but by the Character of the direct flame exposure occurs suddenly. The procedure requires a device whose structure and mode of operation can be seen in the accompanying drawing and is described below.
Der Füllstoff wird in trockenem Zustande gleichmäßig auf einen Zuführtisch i aufgelegt, an dessen Ende oberhalb zur einwandfreien Weiterleitung eine Einführwalze 2 vorgesehen ist. Nachdem der Stoff diese Stelle passiert hat, wird er von oben und von unten vor dem ersten Forindruckwalzenpaar 6, ; mittels Düsen 3, q. mit Wasserglas unter Druck besprüht, wodurch eine gleichmäßige allgemeine Benetzung des Füllstoffs entsprechend der gewünschten Menge an Bindemittel erreicht wird. Um überschüssiges und abtropfendes Wasserglas aufzufangen, ist unterhalb der Sprühdüsen und der nachfolgenden Formdruckwalzenpaare 6, 7; g, 9; 1o, i i ein Fangbecken 5 vorgesehen. Nachdem also der Füllstoff hinreichend mit Wasserglas benetzt ist. gelangt er nacheinander zwischen die Formdruckwalzenpaare 6, 7; S, 9; io, i i, deren Abstände veränderlich sind, und wird hier auf die gewünschte Dicke zusammengepreßt. je nach Art des Füllstoffs können beliebig viele derartige Formdruckwalzenpaare vorgesehen werden. Am letzten Formdruckwalzenpaar io, i i ist die Formgebung so weit vollendet, daß die Erhärtung zur Formerhaltung erfolgen kann. Dies geschieht in der Weise, daß kurz hinter dem letzten Formdruckwalzenpaar i o, i i oberhalb und unterhalb einstellbare Brenner 12, 13 derartig angeordnet sind, daß direkte Stichflammen mit Temperaturen über goo C auf das langsam durchlaufende Gut von oben und von unten über die ganze Arbeitsbreite hinweg einwirken, wodurch ein sofortiges Erhärten des Wasserglases und damit plötzliche Verfestigung der Massen erfolgt. Ein Abzugswalzenpaar 1¢, 15 leitet die in der Dicke fertig geformte Platte dem Abführtisch 16 zu, wonach anschließend das Sägen der endlosen. von der Formmaschine gelieferten Platte in bekannter Weise erfolgt.In the dry state, the filler is placed evenly on a feed table i, at the end of which an infeed roller 2 is provided above for proper forwarding. After the fabric has passed this point, it is from above and from below in front of the first pair of for printing rollers 6,; by means of nozzles 3, q. sprayed with water glass under pressure, as a result of which a uniform general wetting of the filler according to the desired amount of binder is achieved. In order to catch excess and dripping water glass, is below the spray nozzles and the following pairs of pressure rollers 6, 7; g, 9; 1o, ii a catch basin 5 is provided. So after the filler is sufficiently wetted with water glass. it arrives one after the other between the pairs of pressure rollers 6, 7; S, 9; io, ii, the spacing of which is variable, and is here compressed to the desired thickness. Depending on the type of filler, any number of such pairs of forming pressure rollers can be provided. On the last pair of pressure rollers io, ii, the shaping is completed to such an extent that the hardening can take place in order to maintain the shape. This is done in such a way that just behind the last pair of form pressure rollers io, ii above and below adjustable burners 12, 13 are arranged in such a way that direct jet flames with temperatures above goo C on the slowly moving material from above and below over the entire working width act, whereby an immediate hardening of the water glass and thus a sudden solidification of the masses takes place. A pair of take-off rollers 1 [, 15] feeds the plate, which is finished in thickness, to the discharge table 16, after which the endless saws are then cut. plate supplied by the molding machine is carried out in a known manner.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM144477D DE704836C (en) | 1939-03-08 | 1939-03-08 | Method and device for the production of fire-hardened moldings from wood particles cemented with water glass or the like. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM144477D DE704836C (en) | 1939-03-08 | 1939-03-08 | Method and device for the production of fire-hardened moldings from wood particles cemented with water glass or the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE704836C true DE704836C (en) | 1941-04-08 |
Family
ID=7335557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM144477D Expired DE704836C (en) | 1939-03-08 | 1939-03-08 | Method and device for the production of fire-hardened moldings from wood particles cemented with water glass or the like. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE704836C (en) |
-
1939
- 1939-03-08 DE DEM144477D patent/DE704836C/en not_active Expired
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