RT Journal Article T1 Manufacture of ceramic bodies by using a mud waste from the TiO2 pigmentindustry A1 Contreras Llanes, Manuel A1 Martín, M. I. A1 Gázquez González, Manuel Jesús A1 Romero, M. A1 Bolívar Raya, Juan Pedro AB The main objective of this paper is focused in the use of a waste generated by the TiO2 pigmentindustry, ilmenite mud (MUD), on the production of ceramic bodies. These ceramic bodies wereproduced from mixtures of a commercial red stoneware mixture (RSM) with differentconcentrations of mud (3, 5, 7, 10, 30 and 50 wt.%). The samples were sintered to simulate a fastfiringprocess. The sintering behaviour of the fired samples was evaluated by linear shrinkage,means of water absorption, apparent porosity and bulk density. Both green powder and firedsamples were characterised by means of X-ray diffraction (XRD), differential scanning calorimetry(DSC/TG), field emission scanning electron microscopy (FESEM) and bending strengthmeasurements. Moreover, the activity concentrations of radionuclides were measured by highresolutionlow-background gamma spectrometry, because this mud is a NORM (NaturallyOccurring Radioactive Material) waste. Finally, the TCLP leaching test (Toxicity CharacteristicLeaching Procedure, USEPA) was performed to assess the risks of use tiles from an environmentalperspective. The results demonstrated that MUD can be successfully valorised in the manufacture ofred stoneware ceramic bodies with similar or even better technological properties thancommercialmaterials used currently. PB Trans Tech Publications SN 1013-9826 SN 1662-9795 (electrónico) YR 2015 FD 2015 LK http://hdl.handle.net/10272/11586 UL http://hdl.handle.net/10272/11586 LA eng NO Contreras Llanes, M., Martín, M.I., Gázquez González, M.J., Romero, M., Bolívar Raya, J.P.: "Manufacture of Ceramic Bodies by Using a Mud Waste from the TiO2 Pigment Industry". Key Engineering Materials, Vol. 663, págs. 75-85, (2015). DOI: 10.4028/www.scientific.net/KEM.663.75 DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026