Extraction and Characterization of Fe2O3 from Red Mud PT. Indonesia Chemical Alumina West Kalimantan

Red Mud is a term used for residues or waste materials from bauxite refining. One of the main compositions red mud Fe2O3. This study aims to obtain optimum extraction Fe2O3 conditions hematite by using APDC ligands and knowing characteristics generated. In this study, begins determine pH ligand concentration. The results determining showed 1 concentration 0.5 M. can be resolve through characterization Fourier Transformed Infra (FTIR), X-ray Diffraction (XRD) Fluorescence (XRF). FTIR stretching vibration Fe-O phase (570.50 cm-1 470.20 cm-1), XRD diffractogram resulting crystal shape rhombohedralsize 27,08 nm, while XRF mass percent before 42.48% after 72.443%.