DE437186C - Process for the production of uncolored alumina-limestone cements - Google Patents

Process for the production of uncolored alumina-limestone cements

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Publication number
DE437186C
DE437186C DEV20689D DEV0020689D DE437186C DE 437186 C DE437186 C DE 437186C DE V20689 D DEV20689 D DE V20689D DE V0020689 D DEV0020689 D DE V0020689D DE 437186 C DE437186 C DE 437186C
Authority
DE
Germany
Prior art keywords
alumina
limestone
production
uncolored
cements
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
Application number
DEV20689D
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German (de)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEV20689D priority Critical patent/DE437186C/en
Application granted granted Critical
Publication of DE437186C publication Critical patent/DE437186C/en
Expired legal-status Critical Current

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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
    • C04B7/00Hydraulic cements
    • C04B7/32Aluminous cements

Description

Verfahren zur Herstellung ungefärbter Tonerde-Kalksteinzemente. Zusatz zum Patent ¢278g5. Im Hauptpatent 427895 ist ein Verfahren zur Herstellung eines hydraulischen Tonerde-Kalkstein-Bindemittels beschrieben, welche. darin besteht, daß man ein Gemisch von Bauxit und Kalkstein oder Bauxit und Kalk bei einer Temperatur, welche wesentlich niedriger als sein Erw eichungspunkt, z. B. 9oo bis iooo° C, ist, während einer längeren Zeit z. B. 9 bis 12 Stunden, erhitzt. Man erhält unter diesen Bedingungen eine gebrannte Masse, welche nach dem Zermahlen einen Zement ergibt, der dieselben bemerkenswerten Hydraulischen Eigenschaften besitzt wie die durch Schmelzen erhaltenen bekanntest Tonerdezemente. Es hat sich nun herausgestellt, daß man nach diesem Verfahren weiße Tonerdezemente herstellen kann, welche sich vorteilhaft zum Verputzen von Fassade-,1 und zur Herstellung von Formstücken eignen.Process for the production of uncoloured alumina-limestone cements. Addition to the patent ¢ 278g5. In the main patent 427895 a process for the production of a hydraulic alumina-limestone binder is described, which. consists in that a mixture of bauxite and limestone or bauxite and lime at a temperature which is much lower than its Erw eichungspunkt, z. B. 9oo to iooo ° C is, for a longer time z. B. 9 to 12 hours heated. Under these conditions, a calcined mass is obtained which, after grinding, gives a cement which has the same remarkable hydraulic properties as the best-known high-alumina cements obtained by melting. It has now been found that this process can be used to produce white alumina cements, which are advantageously suitable for plastering facades, 1 and for producing molded pieces.

Behandelt man durch Brennen ein Gemisch Von Weißem Bauxit und reinem Kalkstein (:der reinem Kalk, so erhält man einen ungef:irbten Zement, was außerordentlich überraschend ist, weil die bekannter. Verfahren dtircli Schmelzen oder Verklinkern derselben Gemische ein farbiges Produkt ergeben.A mixture of white and pure bauxite is treated by firing Limestone (: the pure lime, then one obtains an unpainted cement, which is extraordinary is surprising because the well-known. Process for melting or clinkering the same mixtures result in a colored product.

Man kann beispielsweise von einem Geinisch von weißem Bauxit und reinem Kalkstein ausgehen, welches so dosiert ist, daß das gebrannte Produkt einen Gehalt an Ton-,erde besitzt, der gleich oder -bis doppelt so groß ist wie der Gehalt an Kieselerde, wobei die Summe der Gehalte an Tonerde und Kieselerde außerdem mit dem Gehalt an Kalk in einem Verhältnis steht, welches von .4 : i variieren kann.One can, for example, from a mixture of white bauxite and pure Run out of limestone, which is dosed so that the burned product has a content of clay, which is equal to or twice as large as the content of Silica, whereby the sum of the contents of alumina and silica is also with the The lime content is in a ratio which can vary from .4: i.

Man erhält unter diesen Bedingungen, wenn man beispielsweise bei 8oo bis i ioo° C während einer hinreichend langen Zeitdauer, z. B. 8 bis 12 Stunden, brennt, einen nicht gefärbten Zement.Under these conditions one obtains, for example at 8oo to 100 ° C for a sufficiently long period of time, e.g. B. 8 to 12 hours, burns, a non-colored cement.

Das Brennen kann in einem beliebigen Ofen erfolgen, wie solcher in der Kalk- und Zementindustrie oder in der keramischen Industrie Verwendung findet (fester Vertikal-oder Zementofen, Drehofen usw.).Firing can be done in any furnace, such as those in in the lime and cement industry or in the ceramics industry (fixed vertical or cement kiln, rotary kiln, etc.).

Die Ausgangsstoffe, nämlich weißer Bauxit und reiner Kalk oder reiner Kalkstein, werden fein gemahlen und dann innig vermischt. Das je nach der Art des verwendeten Ofens brikettierte oder nicht brikettierte Gemisch wird unter den oben angegebenen Bedingungen gebrannt. Die sich ergebende gebrannte und nach der Erkaltung gemahlene Masse liefert einen nicht gefärbten Zement, welcher die bemerkenswerten hydraulischen Eigenschaften besitzt, die den Tonerde-Kalksteiiizementen eigen sind.The starting materials, namely white bauxite and pure or pure lime Limestone, are finely ground and then mixed intimately. Depending on the type of The briquetted or non-briquetted mixture used is among the above fired conditions specified. The resulting burned and after cooling off ground mass provides a non-colored cement, which the remarkable Has hydraulic properties which are inherent in the alumina-limestone cements.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung ungefärbter Tonerde-Kalksteinzernente, dadurch gekennzeichnet, daß man gemäß dem Verfahren nach Patent 427895 Gemische von weißem Bauxit und reinem Kalkstein oder reinem Kalk bei einer Temperatur, die geringer als ihr Erweichungspunkt, z. B. 8oo bis i ioo° C, ist, während einer längeren Zeit, z. B. 9 bis 12 Stunden, brennt. PATENT CLAIM: A process for the production of uncolored alumina-limestone tents, characterized in that, according to the process according to patent 427895, mixtures of white bauxite and pure limestone or pure lime at a temperature which is lower than its softening point, e.g. B. 800 to 100 ° C, is, for a longer time, z. B. 9 to 12 hours burns.
DEV20689D 1925-04-30 1925-04-30 Process for the production of uncolored alumina-limestone cements Expired DE437186C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV20689D DE437186C (en) 1925-04-30 1925-04-30 Process for the production of uncolored alumina-limestone cements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV20689D DE437186C (en) 1925-04-30 1925-04-30 Process for the production of uncolored alumina-limestone cements

Publications (1)

Publication Number Publication Date
DE437186C true DE437186C (en) 1926-11-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEV20689D Expired DE437186C (en) 1925-04-30 1925-04-30 Process for the production of uncolored alumina-limestone cements

Country Status (1)

Country Link
DE (1) DE437186C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803649A1 (en) * 2013-05-15 2014-11-19 Calucem GmbH White Alumina cement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803649A1 (en) * 2013-05-15 2014-11-19 Calucem GmbH White Alumina cement
US9193626B2 (en) 2013-05-15 2015-11-24 Calucem Gmbh Calcium aluminate cement

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