Since the start-up of Sossego copper concentrator, located in Carajás Mineral Province southeast Para State, Brazil, low-grade ore (~0.34% Cu) has been stockpiled, as defined long-term mine plan, to be reclaimed at end life. Given this imminent need process around 40 Mt ore, questions have raised related extent oxidation that might occurred stockpiled ore. In context, a study was designed chara...

The inevitable depletion of mineral resources, the constant deterioration of the geological and mining conditions for the development of mineral deposits and the restoration of raw materials from mining waste by recycling are all urgent problems we face today. The solution to this problem may ensure: a considerable extension of raw material source; decrease of investments in opening new deposit...

A study on the quantitative leaching of iron ore in hydrochloric acid solution has been undertaken. The elemental composition of the iron ore was also carried out using ICP-MS technique. The major elements in the iron ore include: Fe(66.7%); Al (0.2%); Si (5.2%); Ti (0.02%) and O (28.0%). Some traces of V, Ni, Zn, Ce, Cr, La, Y and Zr were also found. The effects of contact time, acid concentra...

Radiotracers and nucleonic gauges are increasingly being applied by the mining, metallurgy and mineral processing industries for the exploration and efficient extraction of natural resources. Such industries exist in most countries and are often major contributors to national economies. Radiotracers are excellent tools for deriving data in a simple manner from a variety of complex and closed fl...