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Clayey materials from the Sierra de la Demanda Range (Spain): their potential as raw materials for the building ceramics industry

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Artigas, Rosana and Rodas, Magdalena and Sánchez Jiménez, Carlos J. and Mas Mayoral, José Ramón and Dondi, Michele and Arribas Mocoroa, José (2005) Clayey materials from the Sierra de la Demanda Range (Spain): their potential as raw materials for the building ceramics industry. Clay minerals, 40 . pp. 25-41. ISSN 0009-8558

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Official URL: http://www.minersoc.org/pages/e_journals/clay.html



Abstract

This work describes the possible use of thick Early Cretaceous clay deposits, which
occur in the southern sector of the Sierra de la Demanda range, as raw materials in the manufacture
of ceramic articles. The global mineralogical composition is characterized by high proportions of
phyllosilicates and quartz with variable quantities of feldspars, carbonates and hematite. The clay
mineralogy differentiates two types of raw materials: illitic clay and kaolinitic-illitic clay. A
granulometric distribution in the 2ÿ60 mm fraction, good behaviour during the drying stage and
acceptable results in firing tests confirmed that most samples can be utilized as raw material in the
building ceramics industry. The range of suitable firing temperatures for these materials is
950ÿ1000ëC, a temperature which needs to be raised for samples with a high percentage of kaolinite
and quartz. Moreover, other materials with abundant calcite (20ÿ30%) are suitable for use as
modifiers of some properties or colour.


Item Type:Article
Uncontrolled Keywords:Illitic clays, Kaolinitic-illitic clays, Ceramic properties, Fluvial systems, Cameros river basin, Spain
Subjects:Sciences > Geology > Petrology
Sciences > Geology > Mineralogy
ID Code:18023
Deposited On:29 Jan 2013 12:01
Last Modified:04 May 2015 07:10

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