Síntese do pigmento TiO2 a partir de Rutilo extraído de Moma (Nampula) pelo método de Sulfatação

Abstract

Mozambique has one of the largest deposits of heavy minerals in Moma, province from Nampula. These minerals constitute a rich source of titanium oxides such as Rutile, Ilmenite and Zircon. These minerals are used to produce the pigment carbon dioxide. titanium and titanium (Ilmenite and Rutile). The aim of the work was to synthesize carbon dioxide titanium from the mineral rutile. The technical feasibility of production was analyzed using the sulfation method, which uses sulfuric acid as a solvent in the digestion process. Pigment synthesis followed the following steps: digestion, hydrolysis and calcination. For the digestion of rutile, 98% sulfuric acid was used for 3 hours in 3 samples with particle diameters of 38μm, 45μm and 63μm, then the acidic liquor resulting from dissolution was hydrolyzed using distilled water where crystals were obtained which were subsequently calcined in the muffle at 550 °C for 30 minutes. The feasibility study technique of this method was carried out by analyzing the performance of the process that consists of analysis of the TiO2 content obtained, and the amount of pigment obtained. It was found that the method used is sustainable, as a TiO2 content of 34.3% was obtained, which is a result satisfactory that allows the use of rutile as a raw material to obtain the pigment in relation to ilmenite, which is the most used raw material industrially.