DE2137483A1 - Low sink ceramically bonded expanded clay - contg silica quartz water glass and ferric oxide - Google Patents

Low sink ceramically bonded expanded clay - contg silica quartz water glass and ferric oxide

Info

Publication number
DE2137483A1
DE2137483A1 DE19712137483 DE2137483A DE2137483A1 DE 2137483 A1 DE2137483 A1 DE 2137483A1 DE 19712137483 DE19712137483 DE 19712137483 DE 2137483 A DE2137483 A DE 2137483A DE 2137483 A1 DE2137483 A1 DE 2137483A1
Authority
DE
Germany
Prior art keywords
expanded clay
elements
water glass
silica quartz
contg
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.)
Granted
Application number
DE19712137483
Other languages
German (de)
Other versions
DE2137483C3 (en
DE2137483B2 (en
Inventor
auf Nichtnennung. P Antrag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAVOLZHAUSEN DACHZIEGELWERKE
Original Assignee
RAVOLZHAUSEN DACHZIEGELWERKE
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 RAVOLZHAUSEN DACHZIEGELWERKE filed Critical RAVOLZHAUSEN DACHZIEGELWERKE
Priority to DE19712137483 priority Critical patent/DE2137483B2/en
Priority to AT646172A priority patent/AT321186B/en
Priority to CH1121072A priority patent/CH581083A5/xx
Publication of DE2137483A1 publication Critical patent/DE2137483A1/en
Publication of DE2137483B2 publication Critical patent/DE2137483B2/en
Application granted granted Critical
Publication of DE2137483C3 publication Critical patent/DE2137483C3/de
Granted legal-status Critical Current

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
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A 1st composn, comprising 70-85% silicic acid quartz 1-5% Na under glass, the rest milled expanded clay, and a 2nd compsn. comprising 40-60% quartz, 15-25% alumina, 7% Fe2O3, 1-5% BaCO3, rest expanded clay, are mixed in the ratio 70:30 to form a slip with water which is then mixed with expanded clay in the ratio 20:80, poured into moulds and fired at 1000-1200 degrees C.

Description

Verfahren zur Herstellung von keramisch gebundenen Blähton Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von keramisch gebundenem Blähton. Process for the production of vitrified-bonded expanded clay The invention relates to a process for the production of ceramic-bonded expanded clay.

Mit dem üblichen Blflhton worden Fassadenelemento mittlerer Größe, wie Fassadenplatten, Kaminplatten und dergl., hergestellt. Für Großelemente eignet sich der normalerweise verwendete Blähton nicht, weil er meistens während der Trocknung in der Form absinkt und dann eine unterschiedliche Dicke der iit Blähton hergestellten Platten entsteht.Facade elements of medium size, such as facade panels, firebacks and the like., Manufactured. Suitable for large elements The expanded clay normally used does not change because it mostly dries during the drying process Sinks in the form and then a different thickness of expanded clay is produced plates arises.

Das Verfahren gemäß der Erfindung beruht auf einem Schüttverfahren, indem eine bestimmte Blähtonzusammensetzung in Pormen gegossen wird, wie dieses beim Betonieren der Fall ist. Das erfindungsgemäße Verrahren zeichnet sich dadurch aus, daß erstens eine Gemengemasse von 70 - 85 % Kieselsäurequarz, 1 - 5 % Natriumwasserglas und zum Rest gemahlener Blähton und zweitens eine Gemengemasse aus 40 - 60 % Kieselsäurequarz, 15 - 25 S Tonerde, ungefähr 7 % Fe2 / , etwa i - 5 % Bariumkarbonat und zum Rest gemahlener Blähton hergestellt werden, diese mit einem Anteil von 70 % der ersten Gemengemasse und einem Anteil von 30 % der zweiten Gemengemasse zusammengemischt werden und unter Zuschüttung von Wasser in einem Rührwerk auf Schlickerkonsistenz gebracht. Fnr das Gießen in Formen wird folgendes Mischverhältnis verwendet: 20 % 2 Komponenten Tonschlicker 80 % Blähton in der gewünschten Kornfraktion.The method according to the invention is based on a bulk method, by pouring a certain expanded clay composition into pormen like this one is the case when concreting. The mixing according to the invention is characterized by this from the fact that firstly a mixture mass of 70 - 85% silica quartz, 1 - 5% sodium water glass and the rest of the ground expanded clay and, secondly, a mixture of 40 - 60% silica quartz, 15 - 25 S clay, about 7% Fe2 /, about i - 5% barium carbonate and the rest ground expanded clay are produced, this with a proportion of 70% of the first Batch mixture and a proportion of 30% of the second batch mixture mixed together and with the addition of water in an agitator to a slip consistency brought. The following mixing ratio is used for casting in molds: 20 % 2 component clay slip 80% expanded clay in the desired grain fraction.

Die gegossenen Formen bzw. die gefertigten Rohelemente werden im Vorwärmer einem Bindeprozeß und im Brennofen einer Sintertemperatur von 1.000 - 1.20000 unterworfen.The cast molds or the finished raw elements are placed in the preheater subjected to a binding process and a sintering temperature of 1,000 - 1,20000 in the kiln.

Der hohe KieselsSurequarzanteil sichert die Schwindungsstabilität. Der varible Anteil an Wasserglas dient der optimalen Gießfestigkeit und gilt als Verflüssigungsbeschleuniger und Konsistenzstabilisator. Über das Wasserglas werden Elektrolyte zugesetzt bzw. wirksam. Soda oder Ätznatron als Elektrolyte sollten wegen des Tonerdegehaltes in der zweiten Gemengemasse möglichst nicht verwendet werden.The high silica-acid quartz content ensures the shrinkage stability. The variable proportion of water glass is used for optimal casting strength and is considered to be Liquefaction accelerator and consistency stabilizer. Be over the water glass Electrolytes added or effective. Soda or caustic soda should be used as electrolytes because of the alumina content in the second batch, if possible not used will.

Die MenRe des Eisenoxyds in der zweiten Gemengemacse liegt am Rohstoff selber. Die Menge des Bariumkarbonats ist gegen die Wirksamkeit löslicher Salze wirksam, weil diese sonst beim Fertigprodukt zu schädlichen und unansehnlichen Ausblühungen führen wUrden. Beim Vorhandensein solcher Salze wird die Wirksamkeit der Elektrolyte aufgehoben.The amount of iron oxide in the second mixture depends on the raw material himself. The amount of barium carbonate is against the effectiveness of soluble salts effective, because this would otherwise lead to harmful and unsightly efflorescence in the finished product would lead. The presence of such salts will reduce the effectiveness of the electrolytes canceled.

Die Konsistenz des Einbindeschlickers muß so sein, daß vor der Beimengung des Blähtons der Schlicker von einem eingetauchten Mischgerät noch als Faden abläuft. Diese Schlickerzusammensetzung hat einen ungewöhnlich hohen und weiten Sinterbereich von 750 - 1.05000. Der Sinterpunkt des Blähtons liegt bei 1.150 - 1.2000C. FUr die Herstellung von 1 m3 keramisch gebundenem Blähton ist folgendes Mischverhältnis erforderlich: 20 % 2 Komponenten Tonschlicker 80 % Blähton in der gewünschten Kornfraktion.The consistency of the embedding slip must be such that before it is added of the expanded clay, the slip still runs off as a thread from an immersed mixer. This slip composition has an unusually high and wide sintering range from 750 - 1.05000. The sintering point of the expanded clay is 1.150 - 1.2000C. For the The following mixing ratio is used to produce 1 m3 of ceramically bound expanded clay required: 20% 2-component clay slip 80% expanded clay in the desired grain fraction.

Die einzelnen Bestandteile der beiden Gemengemassen sind in ihren Grenzfälle beigefügt, weil sie sich genau genommen nach der Anwendungsmöglichkeit richten, betriebsbedingt sind und wie s.B. das Eisenoxyd an den Ausgangsrohstoffen liegen.The individual components of the two mixtures are in theirs Borderline cases attached because, strictly speaking, they depend on the possible application straighten, are operational and as s.B. the iron oxide in the raw materials lie.

Claims (1)

Patentanspruch Claim Verfahren zur Herstellung von keramisch gebundenem Blähton für Bauelemente, wie Fassadenelemente, Dachelemente, Wandelemente, Isolierelemente und insbesondere große Elemente dieser Art, dadurch gekennzeichnet, daß erstens eine Gemengemasse von 70 - 85 % Kieselsäurequarz, 1 - 5 % Natriumwasserglas und zum Rest gemahlener Blähton und zweitens eine Gemengemasse aus 40 - 60 % Kieselsäurequarz, 15 - 25 % Tonerde, ungefähr 7 % Fe2 / 3 , etwa 1 - 5 % Bariumkarbonat und zum Rest gemahlener Blähton hergestellt werden, diese mit einem Anteil von 70 % der ersten Gemengemasse und einem Anteil von 30 % der zweiten Gemengemasse zusammengemischt werden, durch Beimengung von Wasser auf Schlickerkonsistenz gebracht, mit handelsüblichem Blähton im Verhältnis 20 zu 80 % vermengt, in Formen gegossen und in einem Brennofen bei einer Sintertemperatur von 1.000 -1.200°C keramisch gebunden.Process for the production of ceramically bonded expanded clay for building elements, such as facade elements, roof elements, wall elements, insulating elements and in particular large elements of this type, characterized in that firstly a mixed mass of 70 - 85% silica quartz, 1 - 5% sodium water glass and the rest ground Expanded clay and, secondly, a mixture of 40 - 60% silica quartz, 15 - 25% Alumina, about 7% Fe2 / 3, about 1 - 5% barium carbonate and the rest more ground Expanded clay are produced, this with a proportion of 70% of the first batch and a proportion of 30% of the second batch mass are mixed together by By adding water, brought to the consistency of a slip, with commercially available expanded clay mixed in a ratio of 20 to 80%, poured into molds and placed in a kiln Ceramic bonded at a sintering temperature of 1,000-1,200 ° C.
DE19712137483 1971-07-27 1971-07-27 Process for the production of ceramically bound expanded clay Granted DE2137483B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19712137483 DE2137483B2 (en) 1971-07-27 1971-07-27 Process for the production of ceramically bound expanded clay
AT646172A AT321186B (en) 1971-07-27 1972-07-27 Process for the production of ceramically bound expanded clay
CH1121072A CH581083A5 (en) 1971-07-27 1972-07-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712137483 DE2137483B2 (en) 1971-07-27 1971-07-27 Process for the production of ceramically bound expanded clay

Publications (3)

Publication Number Publication Date
DE2137483A1 true DE2137483A1 (en) 1973-03-22
DE2137483B2 DE2137483B2 (en) 1973-09-13
DE2137483C3 DE2137483C3 (en) 1974-04-18

Family

ID=5814932

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712137483 Granted DE2137483B2 (en) 1971-07-27 1971-07-27 Process for the production of ceramically bound expanded clay

Country Status (3)

Country Link
AT (1) AT321186B (en)
CH (1) CH581083A5 (en)
DE (1) DE2137483B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208155A1 (en) * 1992-03-13 1993-09-16 Annawerk Gmbh Light refractory ceramic material - has spherical pores formed by hollow sphere addn. to starting material
DE4410242C2 (en) * 1994-03-24 1996-04-25 Wolfgang Dipl Ing Jehra Process for the production of moldings from expanded clay and their use

Also Published As

Publication number Publication date
DE2137483C3 (en) 1974-04-18
DE2137483B2 (en) 1973-09-13
AT321186B (en) 1975-03-25
CH581083A5 (en) 1976-10-29

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee