Geology, mineralogy, origin and possible applications of some Argentinian kaolins in the Neuquen basin

Cravero, Fiorella; González, I.; Galán, E.; Domı́nguez, Eduardo

doi:10.1016/s0169-1317(96)00035-x

Cited by 25 publications

(14 citation statements)

References 6 publications

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“…The choice of china clay or kaolin for industrial applications is dependent on several factors including specific requirements for developing a particular technology (Nkoumbou et al, 2009). These requirements are dependent on the geological conditions under which the kaolin deposits originate, as well as their mineralogical and chemical composition and degree of kaolinite crystallinity, and physical properties such as colour and firing characteristics (Cases et al, 1986;Cravero et al, 1997;Ekosse, 2000;Pinheiro et al, 2005;Siddiqui et al, 2005;López-Galindo et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…These three ingredients react together under thermal conditions to produce the final product (Carty and Senapati, 1998). Despite significant research already conducted in this field, challenges still remain in understanding the  3  properties relating to the selection and investigation of raw materials, their processing, microstructure and phase evolution, all which are critical determinants for their use as electric insulation materials (Cravero et al, 1997;Iqbal and Lee, 1999;Choudhary and Patri, 2009).…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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show abstract

“…It has a wide range of applications, which include construction, agricultural, textile, paper, pharmaceutics, ceramic, electrical, paint, nuclear energy, polymer and petroleum industries [4][5][6][7]. These applications are strongly linked to their mineralogical and chemical characteristics, which are important for good quality control of kaolins, as physical properties are closely related to the mineralogy and chemistry [8].…”

Section: Introductionmentioning

confidence: 99%

Fourier Transform Infrared Spectroscopy of Clay Size Fraction of Cretaceous-Tertiary Kaolins in the Douala Sub-Basin, Cameroon

et al. 2017

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Abstract:The structural order of Cretaceous-Tertiary kaolins of the Douala Sub-Basin in Cameroon was determined in this study. This was achieved using Fourier Transform Infrared spectroscopy (FTIR) with attenuated total reflectance (ATR) on the Bomkoul, Dibamba, Ediki, Logbaba, Missole and Yatchika kaolins. Transmittance spectra of 20 samples were recorded in the mid-infrared regions (MIR). Results show that most of the kaolins had the four distinguishable bands in the hydroxyl (OH) stretching region, though the second transmittance band (3670 cm −1 ) had low intensities. The hydroxyl stretching of water bands (3457 and 3442 cm −1 for KGa-1b and KGa-2, respectively) were mainly observed in all Logbaba samples at 3443 cm −1 and 3445 cm −1 . The two bands reflecting OH deformation of inner-surface hydroxyl and inner hydroxyl groups (937 and 915 cm −1 ) were quite visible in the Bomkoul, Dibamba, Logbaba and Missole II samples; slightly visible in all Yatchika and two of the Ediki; and not visible in Missole I and one of the Ediki samples. Therefore, based on the empirical classification of the degree of order of kaolinite, 10 of the studied samples had ordered structures. Three displayed partially ordered structures; four had poorly ordered structures, and three exhibited disordered structures. This study revealed that kaolins from Dibamba, Logbaba and Missole II in the Douala SubBasin had the best crystallinity, which is one of the important characteristics needed for industrial applications.

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“…Mineralogical and geochemical characteristics of kaolins are important properties for their quality and potential industrial applica- tions, as physical properties are closely related to the mineralogy and geochemistry [20]. Hence, the objective of this paper was to compare the geochemical characteristics of Cameroon and Nigeria kaolins to known and utilised kaolins from Capim River (Brazil), Pugu (Tanzania), and Kgwakgwe and Makoro (Botswana), and infer on their industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of Selected Kaolins from Cameroon and Nigeria

et al. 2017

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Abstract:The geochemical characteristics of selected kaolins from Cameroon and Nigeria are presented, with an attempt to elucidate on their possible industrial applications by comparing them to world-known kaolin deposits. Major oxides concentrations were subjected to factor analyses in interpreting their relationships. Geochemical indices, including chemical index of alteration (CIA), chemical index of weathering (CIW) and the index of compositional variability (ICV) were computed and plotted on binary and ternary diagrams to determine the intensity of weathering of the kaolins and discriminate their different source rock types. Kaolinite was the major phase, followed by quartz, illite and goethite as minor phases. Minerals in trace phases included smectite, anatase, muscovite, gibbsite, microcline, palygorskite and calcite. Mean abundances of major oxides in wt% were: SiO 2 (56.96)>Al 2 O 3 (24.09)>Fe 2 O 3 (3.78)>TiO 2 (1.53)> K 2 O (1.26)> MgO (0.27)>CaO (0.20)>Na 2 O (0.17)>P 2 O 5 (0.05)>MnO (0.04). The CIW versus CIA and ICV versus CIA plots showed that most of the kaolins clearly depicted extreme silicate weathering. The current applications of kaolins from Cameroon and Nigeria include ceramics and manufacturing of bricks and tiles. Low MgO, CaO, Na 2 O, K 2 O and TiO 2 further position the kaolins for pharmaceutics, cosmetics, rubber and plastic applications. Thus, the studied kaolins have the potential to contribute to improved economic development of these countries.

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Geology, mineralogy, origin and possible applications of some Argentinian kaolins in the Neuquen basin

Cited by 25 publications

References 6 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

Fourier Transform Infrared Spectroscopy of Clay Size Fraction of Cretaceous-Tertiary Kaolins in the Douala Sub-Basin, Cameroon

Geochemistry of Selected Kaolins from Cameroon and Nigeria

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