INVESTIGADORES
RENDTORFF BIRRER Nicolas Maximiliano
artículos
Título:
Thermal behavior (TG-DTA-TMA), sintering and properties of a kaolinitic clay from Buenos Aires Province
Autor/es:
M.S. CONCONI; M. MOROSI; J. MAGGI; P.E. ZALBA; F. CRAVERO; N. RENDTORFF
Revista:
CERâMICA
Editorial:
abc
Referencias:
Año: 2019 vol. 65 p. 227 - 235
ISSN:
0366-6913
Resumen:
The technological properties of a local kaolin, considered as a potential industrial material, were correlated with the thermalbehavior and sintering processes carried out through a series of thermochemical analyses. The chemical and mineralogicalcharacterization of the material was carried out, together with a simple microstructural characterization. The used materialcorresponded to the kaolinized basement rocks (saprolite zone) mined at La Verónica quarry, Chillar area, Azul County,Argentina. The complete kaolinite-metakaolinite-spinel-mullite thermal series was characterized. Sintering behaviorwas studied; a viscous phase sintering mechanism was proposed. Apparent density and porosity of fired ceramics weremeasured. A light-firing color was confirmed by colorimetry. The viscous phase mechanism was possibly described thanksto the multi-technique thermal behavior analysis complemented by XRD analysis. These results permitted to establishformulation and processing strategies of ceramic materials based on the studied clay. The possible applications include: tilemanufacturing, sanitary ware, tableware, kaolinitic proppants, chamotte and refractory materials.
