Caractéristiques structurales et mécaniques de céramiques à base d'argiles : influence de la source de feldspath

Abstract

Re ´sumeDeux sources de feldspath exploite ´es au Maroc sont e ´value ´es pour leur aptitude au broyage, puis sont analyse ´es et compare ´es a ùn feldspath commercial utilise ´dans l'industrie, en termes de leurs compositions chimique quantitative et mine ´ralogique, ainsi que de leur comportement thermique. Des produits ont alors e ´te ´e ´labore ´s en associant ces feldspaths a `diffe ´rentes pa ˆtes ce ´ramiques. L'e ´tude des courbes de gre ´sification (e ´volution du retrait, de la densite ´et de l'absorption d'eau en fonction de la tempe ´rature de cuisson) et des proprie ´te ´s me ´caniques (contrainte de rupture et te ´nacite ´) indique qu'en sus de la bonne aptitude au broyage, la composition mine ´ralogique de la source feldspathique est de ´terminante pour les proprie ´te ´s technologiques et me ´caniques des produits fritte ´s.

Synthesis and Characterization of a Red Clay Based New Composite Ceramic Material

“…In order to enhance this phosphogypse [16], another study of the incorporation of phosphogypse in the building bricks gave a shrinkage exceeds 7.2%. A. Arib and all [17] work on the characterization of clay-based ceramics gets better as shrinkage 1% which confirmed our results.…”

Red ceramics produced from mixtures of kaolinite clay and waste glass

“…Due to the great amount of Fe 2 O 3 in the K clay and presence of low content of Na 2 O + K 2 O (3.30% mass) and CaO (0.51% mass), oxides which act as fluxes at temperatures greater than 1,000°C, the sintering of this clay material could require high temperature to get reliable ceramics. Hence using the K clay for ceramic production might need adjustment of its chemical composition (Sei et al 2004;Arib et al 2007;Elimbi et al 2014;Djangang et al 2014). This can be possible through addition of energetic fluxing agents such as sodium or potassium feldspars or waste glass (Bragança and Bergmann 2004;Rozenstrauha et al 2006;Arib et al 2007;Raimondo et al 2007;Rambaldi et al 2007;Andreola et al 2008;Dondi et al 2009;Djangang et al 2014).…”

Mineralogy, Petrography and Geochemistry of the Ina Syenite (Linté, Central Cameroon) as a Source of Industrial Feldspars

“…Quartz identified in some petrographic type also plays a key role in ceramic production at it increase stiffness, prevent deformation and reduce capillary cracking and thermal expansion of the product [71]. The fineness of the ferromagnesian matrix of these rocks has an impact on its structural nature which is also essential in that crush-ing and grinding could be done with reduced energy consumption [72].…”