AT164924B - Process for the production of artificial stones - Google Patents

Process for the production of artificial stones

Info

Publication number
AT164924B
AT164924B AT164924DA AT164924B AT 164924 B AT164924 B AT 164924B AT 164924D A AT164924D A AT 164924DA AT 164924 B AT164924 B AT 164924B
Authority
AT
Austria
Prior art keywords
added
lime
mixture
hydrated lime
production
Prior art date
Application number
Other languages
German (de)
Inventor
Stefan Ing Schless
Gertrud Schless
Original Assignee
Stefan Ing Schless
Gertrud Schless
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 Stefan Ing Schless, Gertrud Schless filed Critical Stefan Ing Schless
Application granted granted Critical
Publication of AT164924B publication Critical patent/AT164924B/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • C04B28/10Lime cements or magnesium oxide cements
    • C04B28/12Hydraulic lime
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00336Materials with a smooth surface, e.g. obtained by using glass-surfaced moulds
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00862Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/54Substitutes for natural stone, artistic materials or the like
    • C04B2111/542Artificial natural stone
    • C04B2111/545Artificial marble
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/90Electrical properties
    • C04B2111/92Electrically insulating materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Kunststeinen 
 EMI1.1 
 durch ein besonders dichtes, homogenes Gefüge, durch Kantenfestigkeit und geringe Hygroskopizität aus und haben ein dem Naturmarmor täuschend ähnliches Aussehen. 



   Ein besonderer Vorzug des erfindungsgemässen Verfahrens, den Zuschlagstoff als Präzipitat zu gewinnen und beizumengen, besteht darin, dass die erwünschte hohe Kornfeinheit und ein für das Pressen von Kunststeinen besonders günstiges Gefüge der kleinsten Teile ohne den bisher erforderlichen grossen Aufwand an mechanischer Energie und Wärme erzielt wird. 



   Nachstehend ein Beispiel :
Man mischt 70% hydratisierten Kalk in der Kornfeinheit von mindestens 8000   Maschen/e/K   und 30% präzipitierten Kalk innig und setzt der Mischung Farbstoffe entsprechend den beim Fertigerzeugnis gewünschten Farbtönen zu. Das Gemisch wird dann etwas angefeuchtet und in hochglanzpolierten Stahlformen gepresst. Man erhält so bereits Presslinge von hohem Oberflächenglanz und marmorähnlichem Aussehen. 



  An die Erhärtung des Presslings schliesst sich die an sich bekannte Behandlung (Härtung) mit Kohlensäure und Sauerstoff. In der Endphase wird der Pressling mit verdünnter Oxalsäure behandelt, um die etwa noch vorhandenen Poren zu schliessen und den aufgepressten Oberflächenglanz dauerhaft zu machen. Der so erzielte Kunststein hat eine dichte, hochglänzende Oberfläche und ein dem Naturmarmor täuschend ähnliches Aussehen. Das spezifische Gewicht beträgt etwa 2000   /.   



   Schliesslich sei noch folgendes bemerkt :
Ohne den Rahmen der Erfindung zu verlassen, kann man als Zuschlagstoffe hochfein gemahlenen Schwerspat oder Speckstein für sich oder in Mischung verwenden. Diese Zuschlagstoffe kann man entweder statt präzipitierten Kalk oder als Beimengung zu diesem anwenden. Sollen Platten erzielt werden, die für Röntgenstrahlen und Radiumstrahlen undurchlässig sind, so wird überwiegend Baryt als Zuschlagstoff verwendet. 



  Speckstein hingegen wird vorteilhaft verwendet, wenn die Platten besonders hohen Anforderungen hinsichtlich elektrischer Durchschlagsfestigkeit (über 20.000 Volt) genügen sollen. 



   Im Rahmen der vorstehenden Darlegungen wird unter hoher Kornfeinheit eine Siebfeinheit von mindestens 8000   Maschen/c   verstanden.



   <Desc / Clms Page number 1>
 



  Process for the production of artificial stones
 EMI1.1
 by a particularly dense, homogeneous structure, by edge strength and low hygroscopicity and have an appearance that is deceptively similar to natural marble.



   A particular advantage of the process according to the invention of extracting and adding the aggregate as a precipitate is that the desired high grain fineness and a structure of the smallest parts that is particularly favorable for the pressing of artificial stones is achieved without the great expenditure of mechanical energy and heat previously required .



   Here is an example:
70% hydrated lime with a grain fineness of at least 8000 mesh / e / K and 30% precipitated lime are intimately mixed and dyes are added to the mixture according to the color shades desired in the finished product. The mixture is then slightly moistened and pressed into highly polished steel molds. In this way, compacts with a high surface gloss and a marble-like appearance are obtained.



  The hardening of the pellet is followed by the known treatment (hardening) with carbonic acid and oxygen. In the final phase, the pellet is treated with diluted oxalic acid in order to close any pores that may still be present and to make the pressed-on surface gloss permanent. The artificial stone obtained in this way has a dense, high-gloss surface and an appearance that is deceptively similar to natural marble. The specific weight is about 2000 /.



   Finally, the following should be noted:
Without departing from the scope of the invention, extremely finely ground barite or soapstone can be used as additives, either by themselves or as a mixture. These additives can either be used instead of precipitated lime or as an addition to it. If plates are to be obtained that are impermeable to X-rays and radium rays, barite is predominantly used as an additive.



  Soapstone, on the other hand, is used to advantage if the panels are to meet particularly high requirements in terms of dielectric strength (over 20,000 volts).



   In the context of the above explanations, a high grain fineness is understood to mean a sieve fineness of at least 8000 mesh / c.

 

Claims (1)

PATENTANSPRÜCHE : 1. Verfahren zur Herstellung von Kunststeinen durch Pressen einer Mischung von hydratisiertem Kalk und Zuschlagstoffen, dadurch gekennzeichnet, dass die Zuschlagstoffe in derselben hohenKornfeinheit von mindestens 8000 Maschen/ cm2 wie der hydratisierte Kalk beigemengt. werden. PATENT CLAIMS: Process for the production of artificial stones by pressing a mixture of hydrated lime and aggregates, characterized in that the aggregates are added in the same high grain fineness of at least 8000 mesh / cm2 as the hydrated lime. will. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Zuschlagstoff dem hydratisierten Kalk als Präzipitat, z. B. als präzipitierter Kalk, beigemengt, das Gemenge angefeuchtet und in hochglanzpolierten Stahlformen gepresst wird, worauf der Pressling nach einer an sich bekannten Härtung in Kohlensäure und Sauerstoff mit verdünnter Oxalsäure behandelt wird, um die Oberfläche dichter und den beim Pressen erzeugten Hochglanz dauerhaft zu machen. 2. The method according to claim 1, characterized in that the aggregate is the hydrated lime as a precipitate, for. B. as precipitated lime, added, the mixture is moistened and pressed in highly polished steel molds, whereupon the compact is treated after a known hardening in carbonic acid and oxygen with diluted oxalic acid in order to make the surface denser and the high gloss produced during the pressing permanent . 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der präzipitierte Kalk in einer EMI2.1 wendung kommt. 3. The method according to claim 2, characterized in that the precipitated lime in a EMI2.1 turn comes. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass zur Erzielung von für Röntgen-und Radiumstrahlen undurchlässigen Presslingen Baryt, zur Erzielung von Presslingen hoher elektrischer Durchschlagfestigkeit Speckstein beigemengt wird. 4. The method according to claims 1 to 3, characterized in that to obtain pellets impermeable to X-rays and radium rays, barite is added, and soapstone is added to achieve pellets with high dielectric strength.
AT164924D 1945-11-09 1945-11-09 Process for the production of artificial stones AT164924B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT164924T 1945-11-09

Publications (1)

Publication Number Publication Date
AT164924B true AT164924B (en) 1949-12-27

Family

ID=3653430

Family Applications (1)

Application Number Title Priority Date Filing Date
AT164924D AT164924B (en) 1945-11-09 1945-11-09 Process for the production of artificial stones

Country Status (1)

Country Link
AT (1) AT164924B (en)

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