Costa, Francine Alves daMaia, Marcos Aurélio de Oliveira2020-03-122020-03-122018-11-07MAIA, Marcos Aurélio de Oliveira. Caracterização da ilmenita como fonte de obtenção de dióxido de titânio. 2018. 113f. Dissertação (Mestrado em Engenharia Mecânica) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2018.https://repositorio.ufrn.br/jspui/handle/123456789/28511Industrial titanium dioxide production uses more than 90% of titanium ore concentrates produced by mining companies worldwide, and the ilmenite mineral is the main source of this important raw material, widely used as a pigment in the paint, paper and plastic industry, rubber, cosmetics, pharmaceuticals, among others. The ilmenite (FeTiO3) is a dark brown to reddish brown mineral, consisting of iron (36.8%), titanium (31.6%) and oxygen (31.6%), crystallizes in the hexagonal rhombohedral system, although such a structure, may undergo change to an amorphous phase FeO, Fe2O3 and TiO2. This work aims to characterize the ilmenite mineral, source of titanium dioxide, of the iron ore extracted from the Serrote da Pedra Preta mine in the municipality of Floresta-PE, Brazil, whose geological features have ferrotitanomagnetític associations in ultramafic rocks. In this work, samples in the form of rocks and particulate or crushed materials were collected respectively from the mine and from the already processed ore cells in the mine. These samples were named FLO 01 for the coarse ore pile; FLO 02 - floor of the cellar; FLO 03 - Cava Slopes and FLO 04 - Stacks of fine ore. The samples were comminuted and classified into granulometric fractions in the range of> 4 mesh to ≤ 325 mesh. The aliquots in the - 150, - 200 and - 325 mesh granulometric fractions were characterized by FRX, DRX, SEM-EDS after homogenization and scaling. Magnetic minerals such as magnetite and titanomagnetite associated with ilmenite and other contaminating compounds such as vanadium were identified in the analytical results. The FLO 02 powders, prepared in the -18 mesh fraction, showed a higher percentage of TiO2 and, therefore, were subjected to the wet magnetic separation process, using a magnetic separator INBRAS, resulting in the high concentration of ilmenite in the magnetic fraction of high intensity (1C), corresponding to 64.20% of the recovered mass volume. The results obtained by EDX, MEV-EDS and fusion by lithium tetraborate - FRX confirmed the high titanium dioxide content in the ilmenite ore, varying between 38.83% and 44.70% of TiO2. In the low intensity (1A) and medium intensity (1B) magnetic fractions, the values of vanadium pentoxide ranged from 0.68% to 1.92% of V2O5, which are significant compared to those observed in the mineral deposits of world class.Acesso AbertoCaracterização da ilmenitaDióxido de titânioSeparação magnéticamasterThesisCNPQ::ENGENHARIAS::ENGENHARIA MECANICA