Article (Scientific journals)
Occurences of kaolin in Koutaba (west Cameroon): Mineralogical and physicochemical characterization for use in ceramic products
Nkalih Mefire, Abiba; Njoya, A.; Yongue Fouateu, R. et al.
2015In Clay Minerals, 50 (5), p. 593-606
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Keywords :
argile; brique; céramique; minéralogie; construction; cameroun
Abstract :
[en] Thirty clay samples collected from three hills in Koutaba (west Cameroon) were characterized in order to evaluate their potential use as raw materials for ceramics. After preliminary mineralogical identification by X-ray diffraction, three representative samples from the three different hills, referred to hereafter as K1M, K2M and K3M, were selected for further investigation by X-ray fluorescence, plasticity, granularity and thermogravimetric analysis. The main clay minerals are kaolinite (32–51%) and illite (up to 12%). Additional major phases are quartz (32–52%), goethite (6–7%) and feldspars (0–4%). The chemical composition showed variable amounts of SiO2 (60–72%), Al2O3(15–20%) and Fe2O3 (1–9%), in accordance with the quartz abundance in all of the samples studied. The particle-size distribution showed a large proportion of silty fraction (64–88%) with moderate sandy (9–19%) and clayey fractions ( < 5% for K2M, 12% for K1M and 20% for K3M). All of the clays showed moderate plasticity-index values (8–11%). Because of these characteristics, K1M and K3M may be suitable for use in common bricks and hollow ceramic products. Sieving or the addition of ball clays is recommended to increase the plasticity of sample K2M for use in common bricks.
Research center :
AGEs
Geology - ULiège
Disciplines :
Earth sciences & physical geography
Author, co-author :
Nkalih Mefire, Abiba ;  Université de Liège - ULiège > Form. doct. sc. (géologie - Bologne)
Njoya, A.
Yongue Fouateu, R.
Mache, J.R.
Tapon, N.A.
Nzeukou Nzeugang, Aubin 
Melo Chinje, U.
Pilate, P.
Flament, P.
Siniapkine, S.
Ngono, S.
Fagel, Nathalie  ;  Université de Liège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Language :
English
Title :
Occurences of kaolin in Koutaba (west Cameroon): Mineralogical and physicochemical characterization for use in ceramic products
Publication date :
2015
Journal title :
Clay Minerals
ISSN :
0009-8558
Publisher :
Mineralogical Society of Great Britain, London, United Kingdom
Volume :
50
Issue :
5
Pages :
593-606
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CUD - Commission Universitaire pour le Développement [BE]
Available on ORBi :
since 10 June 2016

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