TY - JOUR
T1 - Characterisation and identification of local kaolin clay from Ghana
T2 - A potential material for electroporcelain insulator fabrication
AU - Yaya, Abu
AU - Tiburu, Elvis K.
AU - Vickers, Mary E.
AU - Efavi, Johnson K.
AU - Onwona-Agyeman, Boateng
AU - Knowles, Kevin M.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/12/15
Y1 - 2017/12/15
N2 - The aim of this work was to evaluate two kaolin clays from the southern part of Ghana, Assin-Fosu and Kumasi clays, as source clays for the fabrication of electroporcelain insulators. X-ray diffraction, differential thermal analysis, thermogravimetric analysis, chemical analyses and scanning electron microscopy observations showed the fired clay minerals have broadly similar characteristics, but with significant differences in their chemical composition. The alumina contents were determined to be 35 ± 2 wt% and 22 ± 2 wt% respectively for the two kaolins and the silica contents 49 ± 3 wt% and 58 ± 3 wt% respectively. It is concluded that Assin-Fosu kaolin is a reliable local source material for electroporcelain fabrication, while Kumasi kaolin is more suitable for making wall and floor tiles.
AB - The aim of this work was to evaluate two kaolin clays from the southern part of Ghana, Assin-Fosu and Kumasi clays, as source clays for the fabrication of electroporcelain insulators. X-ray diffraction, differential thermal analysis, thermogravimetric analysis, chemical analyses and scanning electron microscopy observations showed the fired clay minerals have broadly similar characteristics, but with significant differences in their chemical composition. The alumina contents were determined to be 35 ± 2 wt% and 22 ± 2 wt% respectively for the two kaolins and the silica contents 49 ± 3 wt% and 58 ± 3 wt% respectively. It is concluded that Assin-Fosu kaolin is a reliable local source material for electroporcelain fabrication, while Kumasi kaolin is more suitable for making wall and floor tiles.
UR - http://www.scopus.com/inward/record.url?scp=85033371399&partnerID=8YFLogxK
U2 - 10.1016/j.clay.2017.09.015
DO - 10.1016/j.clay.2017.09.015
M3 - Article
AN - SCOPUS:85033371399
SN - 0169-1317
VL - 150
SP - 125
EP - 130
JO - Applied Clay Science
JF - Applied Clay Science
ER -