CHARACTERIZATION OF WASTE MOLDING SANDS, FOR THEIR POSSIBLE USE AS BUILDING MATERIAL
Hernández Ávila, Juan
2015
MAURICIO GUERRERO R., JUAN HERNÁNDEZ A., JAVIER FLORES B., ELEAZAR SALINAS R. , ISAURO RIVERA L., MA. ISABEL REYES V., EDUARDO CERECEDO S., VICTOR E. REYES C., CARMEN CORTES L.,CHARACTERIZATION OF WASTE MOLDING SANDS, FOR THEIR POSSIBLE USE AS BUILDING MATERIAL, CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2016, 615-621, (2015), ISBN 978-1-119-26439-2, EDITED BY: SHADIA JAMIL IKHMAYIES, BOWEN LI, JOHN S. CARPENTER, JIANN-YANG HWANG, SERGIO NEVES MONTEIRO, JIAN LI, DONATO FIRRAO, MINGMING ZHANG, ZHIWEI PENG, JUAN P. ESCOBEDO-DIAZ, AND CHENGUANG BAI, PUBLISHED BY JOHN WILEY & SONS, INC., HOBOKEN, NEW JERSEY.
Abstract
It was done a physicochemical and mineralogical characterization of the molding sand wastes of the ironcasting process, being these sands the main residue of the process, representing 65 to 85 % of the total waste.According with the obtained results, the chemical composition of the material (expressed in weightpercentages) is the following: 77.9 SiO2, 6.6 Al2O3, 8.56 Fe2O3, 0.14 TiO2, 2.48 MgO, 0.34 K2O, 1.52 CaOand 1.03 Na2O. The major mineral phases found were: Albite, Orthoclase, Quartz (anorthic) and Laihunite,and as minority phases were present both the Berlinite and the Montmorillonite. Furthermore the material presented a thick granulometry, around 60% corresponds to a particle size of 53?m. According to this characterization, these residues could be used in the manufacture of construction materials such as bricks, blocks, or as a cementing material.
