Análise quantitativa da ilmenite extraída em moma- nampula em termos de teores de tio 2 , fe 2 o 3 , th, u e cr 2 o 3

Abstract

In the present work, the main ilmenite derivatives were evaluated in terms of content of TiO 2 and Fe 2 O 3 as major elements as well as Th, U and Cr 2 O 3 as main contaminants controlled by the customer, processed and exported by the Kenmare dealership during the months of November and December 2012. The “XRF” technique was applied to determine TiO 2, Fe 2 O 3, Th, U and Cr 2 O 3 (method main) and redox titration (auxiliary method) for Fe determination in the different oxidation states in which it is found in the different samples of the final products. The samples were made available by the marketing department and analyzed in the Kenmare laboratory. The collection of samples was done in an automated way at a point sampling along the conveyor belt that transports you to the ship. The accuracy for the determination of the TiO 2, Fe 2 O 3 and Cr 2 O 3 contents by “XRF” using the MR SARM 59 was very good with% Er values ​​ranging from 0.00 to 0.28. The accuracy of “XRF” technique proved to be good with% RSD ranging from 0.01 to 10.31 for all samples. Three samples of the final products were analyzed and the results obtained were compared with the quality assurance standards for MP (MSDS), where it was found that all species of interest analyzed were within the specification limits.