Characterisation of bauxite cleaning waste in Tanjungpinang Indonesia

Abstract The processing of bauxite ore into aluminium produces a large amount waste materials. Red mud as from the alumina industry is problem that damages hydrological function soil. can still be utilised according to its composition and characteristics. In this study, red originating Tanjungpinang characterised using several techniques (Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX), Diffraction (XRD), Adsorption desorption nitrogen. XRD characterisation results for all samples tested, namely bmd1, bsg1, bsg2, bsg3, have relatively uniform phases: boehmite, Gibbsite, Nepheline, Calcite, Hematite, Quartz. SEM-EDX test obtained data on highest Al content found in bsg3 with weight 7.2%. nitrogen has surface area 62,423 m 2 /g. With characteristics washing, material various fields.