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Assessment of clays from Puertollano (Spain) for their use in fine ceramic by diffuse reflectance spectroscopy
https://orcid.org/0000-0002-0809-4959
Abstract Four different samples of sterile waste clays resulting from the coal mining activity in Puertollano (Ciudad Real, Spain) have been assessed for their potential use in the ceramic industry. Raw and calcined samples have been characterized by atomic absorption, X-Ray diffraction, scanning electron microscopy and second derivative of the diffuse reflectance spectra. This last measurement allowed not only the detection but also the quantification of the amounts of hematite and goethite responsible for the reddish color. This method proved to be the most accurate and successful in the determination of the samples' composition. Particularly, one of the clay samples was found to be suitable for its use in the fine ceramic industry, whereas other clay samples could be utilized in the production of bricks or as reddish pigments.
Highlights Assessment of clays from sterile mining for their use in the fine ceramic industry Easy method for the estimation of iron oxides in different clays Use of the Kubelka–Munk function in its derivative form White firing clays have been found in Puertollano (Spain).
Assessment of clays from Puertollano (Spain) for their use in fine ceramic by diffuse reflectance spectroscopy
https://orcid.org/0000-0002-0809-4959
Abstract Four different samples of sterile waste clays resulting from the coal mining activity in Puertollano (Ciudad Real, Spain) have been assessed for their potential use in the ceramic industry. Raw and calcined samples have been characterized by atomic absorption, X-Ray diffraction, scanning electron microscopy and second derivative of the diffuse reflectance spectra. This last measurement allowed not only the detection but also the quantification of the amounts of hematite and goethite responsible for the reddish color. This method proved to be the most accurate and successful in the determination of the samples' composition. Particularly, one of the clay samples was found to be suitable for its use in the fine ceramic industry, whereas other clay samples could be utilized in the production of bricks or as reddish pigments.
Highlights Assessment of clays from sterile mining for their use in the fine ceramic industry Easy method for the estimation of iron oxides in different clays Use of the Kubelka–Munk function in its derivative form White firing clays have been found in Puertollano (Spain).
Assessment of clays from Puertollano (Spain) for their use in fine ceramic by diffuse reflectance spectroscopy
https://orcid.org/0000-0002-0809-4959
Abstract Four different samples of sterile waste clays resulting from the coal mining activity in Puertollano (Ciudad Real, Spain) have been assessed for their potential use in the ceramic industry. Raw and calcined samples have been characterized by atomic absorption, X-Ray diffraction, scanning electron microscopy and second derivative of the diffuse reflectance spectra. This last measurement allowed not only the detection but also the quantification of the amounts of hematite and goethite responsible for the reddish color. This method proved to be the most accurate and successful in the determination of the samples' composition. Particularly, one of the clay samples was found to be suitable for its use in the fine ceramic industry, whereas other clay samples could be utilized in the production of bricks or as reddish pigments.
Highlights Assessment of clays from sterile mining for their use in the fine ceramic industry Easy method for the estimation of iron oxides in different clays Use of the Kubelka–Munk function in its derivative form White firing clays have been found in Puertollano (Spain).
Assessment of clays from Puertollano (Spain) for their use in fine ceramic by diffuse reflectance spectroscopy
Zurita Ares, M.C. (author) / Pérez, M.R. (author) / Quesada Carballo, L. (author) / Fernández, J.M. (author)
Applied Clay Science ; 108 ; 135-143
2015-02-02
9 pages
Article (Journal)
Electronic Resource
English
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