caa a22 4500 46318811X CHVBK 20180406164859.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10973-006-8093-1 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8093-1 Effectof grinding on thermal reactivity of ceramic clay minerals [Elektronische Daten] [V. Balek, L. Pérez-Maqueda, J. Poyato, Z. Černý, V. Ramírez-Valle, I. Buntseva, J. Pérez-Rodríguez] The effect of grinding on thermal behavior of pyrophyllite and talc as commonly used ceramic clay minerals was investigated by DTA, TG, emanation thermal analysis (ETA), B.E.T. surface area (s.a.) measurements, X-ray diffraction (XRD) and scanning electron microscopy (SEM). A vibratory mill was used in this study, grinding time was 5 min. It was found that the grinding caused an increase in surface area and a grain size reduction of the samples. From TG and DTA results it followed that grinding caused a decrease of the temperature at which the structure bound OH groups released. The formation of high temperature phases was enhanced with the ground samples. For the ground talc sample the crystallization of non-crystalline phase into orthorhombic enstatite was observed in the range of 800°C. For ground pyrophyllite a certain agglomeration of grains was observed in the range above 950°C. Moreover, for both clays the ETA characterized a closing up of subsurface irregularities caused by grinding as a decrease of the emanation rate in the range 250-400°C. The comparison of thermal analysis results with the results of other methods made it possible to better understand the effect of grinding on the ceramic clays. Springer-Verlag, 2007 DTA nationallicence emanation thermal analysis nationallicence grinding nationallicence pyrophyllite nationallicence scanning electron microscopy nationallicence surface area nationallicence talc nationallicence thermogravimetry nationallicence X-ray diffraction nationallicence Balek V. Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68, Rez, Czech Republic aut Pérez-Maqueda L. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut Poyato J. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut Černý Z. Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68, Rez, Czech Republic aut Ramírez-Valle V. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut Buntseva I. Chemical Faculty, Moscow State University, 199234, Moscow, Russia aut Pérez-Rodríguez J. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 88/1(2007-04-01), 87-91 1388-6150 88:1<87 2007 88 10973 https://doi.org/10.1007/s10973-006-8093-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8093-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Balek V. Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68, Rez, Czech Republic aut NATIONALLICENCE 700 1- Pérez-Maqueda L. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut NATIONALLICENCE 700 1- Poyato J. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut NATIONALLICENCE 700 1- Černý Z. Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, 250 68, Rez, Czech Republic aut NATIONALLICENCE 700 1- Ramírez-Valle V. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut NATIONALLICENCE 700 1- Buntseva I. Chemical Faculty, Moscow State University, 199234, Moscow, Russia aut NATIONALLICENCE 700 1- Pérez-Rodríguez J. Institute of Materials Sciences, CSIC-University of Sevilla, c. Americo Vespucio s/n, 41092, Sevilla, Spain aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 88/1(2007-04-01), 87-91 1388-6150 88:1<87 2007 88 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer