Mineralogical, crystallographic and morphological characteristics of natural kaolins from the Ivory Coast (West Africa)

被引：23
|
作者：
Sei, J.
Morato, F.
Kra, G.
Staunton, S.
Quiquampoix, H.
Jumas, J. C.
Olivier-Fourcade, J.
机构：
[1] INRA, Unite Rhizosphere & Symbiose, F-34060 Montpellier 2, France
[2] Univ Cocody, Lab Chim Minerale, UFR SSMT, Abidjan, Cote Ivoire
[3] Univ Montpellier 2, Lab Agregats Mol & Mat Inorgan, UMR 5072, CNRS, F-34095 Montpellier, France
来源：
JOURNAL OF AFRICAN EARTH SCIENCES | 2006年 / 46卷 / 03期
关键词：
kaolin; metakaolinite; iron oxide; XRD; DTA; structural disorder;
D O I：
10.1016/j.jafrearsci.2006.06.002
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Thirteen clay samples from four deposits in the Ivory Coast (West Africa) were studied using X-ray diffraction, thermogravimetric analysis and chemical analysis. Mineralogical, crystallographic and morphological characteristics of these samples are given. Kaolinite is the principal mineral but other minerals are present in small quantities: illite, quartz, anatase and iron oxides (oxides and oxyhydroxides). The crystallographic, morphological and surface characteristics are influenced by the presence of these impurities. In particular, the presence of iron oxides was associated with reduced structural ordering and thermal stability of kaolinite and increased specific surface area. These clays could be used in the ceramics industry to make tiles and bricks, and also in agronomy as supports for chemical fertilizers or for environmental protection by immobilising potentially toxic waste products. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：245 / 252
页数：8
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