CHARACTERIZATION OF STEEL WASTE POWDER USED FOR COLORING APPLICATIONSIN BRICKS MANUFACTURING

In order to use a complex steel waste powder from the Siderurgia Calif ornia SA of CV, Mexicali, as additive for the production of coloured b uilding bricks, an investigation has been carried out emphasizing the analytical problems arising for the determination of its chemical comp osition. The full chemical analysis of this material has implied the a pplication of several techniques : gravimetry, redox-volumetry, induct ively coupled plasma, atomic emission spectrometry (ICP-AES), atomic a bsorption spectrometry (AAS), ion-selective electrodes (ISE), inert ga s fusion (IGF) and thermogravimetry (TG). The results of the chemical analysis fit well with the mineralogical composition of material obtai ned by X-ray diffraction (XRD).