Estudo do desempenho do espectrómetro de fluorescência de raios-x na determinação de impurezas no coque

Abstract

The aim of this work is to verify the performance of the X-ray fluorescence spectrophotometer in determining the degree of impurities in coke. To this end, the elements sulfur, silicon, nickel, vanadium, iron and calcium existing in reference samples were analyzed. It is verified that for sulfur the samples indicate relative errors from -1.6% to 2.0%, for iron from -0.4% to 1.0%, for silicon from -2.6% to 0.9%, for vanadium from -2.0 to 1.9 %, for nickel from -1.5% to 1.0% and for calcium from -0.8 to 1.0%. Based on the results presented, with the exception of silicon, it appears that the relative errors are less than 2% which, according to the specifications of the equipment supplier, is indicative of a good performance of the device assembled at Mozal. (TRADUÇÃO NOSSA)