Characterization of technical kaolin using XRF, SEM, XRD, FTIR and its potentials as industrial raw materials

作     者：R Dewi H Agusnar Z Alfian Tamrin 

作者机构：Doctoral program of chemistry FMIPA Universitas Sumatera Utara Chemical Engineering Department Lhokseumawe State Polytechnic Department of Chemistry Universitas Sumatera Utara 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2018年第1116卷第4期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：Technical Kaolin is a commercially sold kaolin with a relatively low level of purity and is often used as a filler of paints, paper, and ceramics. In this study, we tested the technical properties of kaolin physically and chemically, which include XRF, SEM, XRD, and FTIR. Based on the XRF test, the main composition of kaolin, SiO2, Al2O3, K2O, Fe2O3, and TiO2 were 46.66%, 39.63%, 0.84%, 0.55% and 0.274% respectively, while the rest were impurities. The FTIR spectra showed the functional groups of Al-OH, Al-O, and Si-O. While the XRD diffractogram identified kaolinite as the main mineral phase in the presence of quartz, chlorite, halloysite, and cristobalite tested in small quantities in the sample.