Purification of Kaolin Clays by Means of Electrochemical Techniques

In the present work a kaolin clay sample was studied and its treatment was carried out with the purposeof separating iron oxides contained in it. This kaolin clay comes from Agua Blanca de Iturbide inHidalgo State (Mexico). The clay was classified and treated to obtain micrometrical particles. Thismaterial in solution was studied by voltammetry, this solution showed a cathodic process attributed toreduction of iron in kaolin. Likewise, a subsequent process of macroelectrolysis at a controlled cellpotential, showed that, when process is finished, iron is solved; helping to increase the purity of kaolin.The mineral original was characterized by Xray diffraction (XRD), particle size analysis (PSA),scanning electron microscopy (SEM) and chemical analysis by high dispersion spectroscopy ofinductively coupled plasma (ICP). The obtained product after treatment was characterized by ICP.