Caracterização do minério de ferro do Alvo Facheiro, Casa Nova, Bahia

Abstract

Iron ore is an important mineral asset for the world economy, and has been increasingly required to meet global growth. Thinking about the current high demand for these products and that they are derived from finite raw materials, it is to be expected that deposits will become smaller and scarcer, increasing the importance of characterization studies to optimize processes and increase the efficiency of using this commodity. The iron formation body of Alvo Facheiro is inserted in a lithological set related to the Lagoa do Alegre Complex, defined as a metavolcanosedimentary association. The integrated evaluation of the mineral research programs resulted in a total measured and indicated resource of 18.24 Mt with 27.94% Fe. The granulochemistry showed that the finer granulometric fractions have greater mineral release, demonstrated by the higher content, which can mean that the grinding above 150 mm will facilitate the concentration processes The mineralogical characterization showed that the samples have three to eight mineral phases, identified by goethite, hematite, magnetite and siderite. In addition to minerals rich in chromium, magnesium, iron and others.