Composition, origin and industrial suitability of the Aswan ball clays, Egypt

Baioumy, Hassan; Ismael, Ismael S.

doi:10.1016/j.clay.2014.09.041

Cited by 34 publications

(11 citation statements)

References 29 publications

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“…The XRD pattern from the Kumasi kaolin is similar to that of ball clay (e.g., Fig. 3 of Carty and Senapati, 1998): ball clays are kaolinitic plastic clays which can have significant levels of quartz and are characterised by wide ranges in chemical compositions (e.g., Baioumy and Ismael, 2014).…”

Section: Xrd Analysis and The Mineralogy Of The Kaolin Samplesmentioning

confidence: 85%

Characterisation and identification of local kaolin clay from Ghana: A potential material for electroporcelain insulator fabrication

Yaya

Tiburu

Vickers

et al. 2017

Applied Clay Science

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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.

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Section: Xrd Analysis and The Mineralogy Of The Kaolin Samplesmentioning

confidence: 85%

Characterisation and identification of local kaolin clay from Ghana: A potential material for electroporcelain insulator fabrication

Yaya

Tiburu

Vickers

et al. 2017

Applied Clay Science

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“…Minerals 2020, 10, x FOR PEER REVIEW 2 of 11 mineral formation with resultant effect on technological properties [4,6,[17][18][19][20][21][22][23][24][25][26]. Therefore, for optimal exploitation of natural clays, the sintering behavior needs to be fully appraised.…”

Section: Methodsmentioning

confidence: 99%

“…During sintering, the clay body undergoes chemical and structural modifications that deeply transform the inherent characteristics of raw ceramic material. This process is accompanied by differential phase transformation and neo-mineral formation with resultant effect on technological properties [4,6,[17][18][19][20][21][22][23][24][25][26]. Therefore, for optimal exploitation of natural clays, the sintering behavior needs to be fully appraised.…”

Section: Introductionmentioning

confidence: 99%

Composition and Technological Properties of Clays for Structural Ceramics in Limpopo (South Africa)

Diko-Makia

Ligege

2020

Minerals

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This study evaluated the potential of raw clays from the Mukondeni region for structural ceramics and pottery based on traditional firing techniques. Physical properties were identified by particle size distribution, consistency limits, and clay activity. Mineralogical and chemical properties were investigated by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Extruded clay bodies were fired at 900 °C. Technological characteristics were measured by weight loss (WL), bulk density (BD), dry linear shrinkage (DLS), fired linear shrinkage (FLS), water absorption (WA), and flexural strength (FS). The clays were low in <2 µm fractions (≤19%) and of medium to high plasticity with a clayey silt texture. Smectite was the dominant clay mineral while quartz and feldspar were major non clay minerals. The most abundant oxides were SiO2 (63.57–68.73%), Al2O3 (13.9–15.61%), and Fe2O3 (4.86–6.18%), whereas K2O, CaO, MgO, Na2O, TiO2, and P2O5 were depleted. Characterization based on the clay workability chart, Winkler’s diagram, and compositional ternary diagrams revealed acceptable extrusion properties and suitability for structural ceramics and earthenware. The clays showed acceptable WL, BD, LS, and WA, but unsatisfactory FS (≤1.08 MPa). Low mechanical strength was attributed to presence of smectites and inert nature of feldspar at 900 °C. Beneficiation through mixing with carbonate-rich raw materials is recommended.

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“…The content of potassium oxide, K 2 O, and magnesium oxide, MgO, were low; indicating that high level of densification will not be possible at temperatures below 1000°C [15], because they are fluxing agents. In particular, the K 2 O in clays materials came from muscovite and potassium feldspar [16,17].…”

Section: Chemical Compositionmentioning

confidence: 98%

Physicochemical and mineralogical properties of clays used in ceramic industry at North East Colombia

Sánchez

Mora

Chaparro

et al. 2019

DYNA

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General properties of clays from Ceramica Murano Mine, in the municipality of El Zulia, Norte de Santander, have been investigated. Five clay samples were collected from different mantles of the mine. All the samples were characterized using chemical and mineralogical analysis, as well as physical properties like particle size, plasticity, drying and firing shrinkage and water absorption capacity. The chemical and mineralogical results indicated that all samples contained different amount of kaolinite and quartz, followed by hematite and anatase. Low amounts of muscovite were found mainly in samples F2 and F5. These clays are suitable for use as a raw material in creating ceramic construction products, especially for the manufacture of roof tiles and bricks according to the Winkler methodology. The variations found in the characterization of the raw material influence the technological properties of the ceramic that can be obtained from the clays under study.

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Composition, origin and industrial suitability of the Aswan ball clays, Egypt

Cited by 34 publications

References 29 publications

Characterisation and identification of local kaolin clay from Ghana: A potential material for electroporcelain insulator fabrication

Characterisation and identification of local kaolin clay from Ghana: A potential material for electroporcelain insulator fabrication

Composition and Technological Properties of Clays for Structural Ceramics in Limpopo (South Africa)

Physicochemical and mineralogical properties of clays used in ceramic industry at North East Colombia

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