Tio2 Purification From Ilmenite The Tin Industry By-Product For Pigment

Ilmenite deposits, a by-product of the tin industry in Bangka, cause environmental problems. Ilmenite is very abundant and has great potential because it still contains 53.83% titanium oxide. One of TiO2 benefits is for pigment. TiO2 pigment in Indonesia still imported. TiO2 pigment can be applied to various industrial sectors such as paints, coatings, fillers, semiconductor materials. This research aims to extract TiO2 from ilmenite with purity level above 80%. The TiO2 extraction used repeated leaching methods with sulfuric acid. Then followed by the hydrolysis process with the addition of seed and calcined. TiO2 products were analyzed using X-ray fluorescence (XRF) and X-ray diffraction (XRD). The content of TiO2 obtained in this process is 83.36% and is in the form of rutile crystals. The purity and crystal formed of this TiO2 product suitable with the minimum standards of TiO2 pigments required by ASTM D 476 (2015). This research can be the alternative to solve environmental problems in the tin industry while increasing the economic value as TiO2 products that has great market potential in Indonesia since there is no TiO2 industry in Indonesia.