Oscar Jerez

TL;DR: In this article, column leaching of converter slag with the use of ammonium hydroxide was carried out in 1.2m high columns with a cross-section diameter of 7.5×10−2m, using 2.0 kg of slag.

TL;DR: In this paper, the response of Cu-oxide and sulfide ores is studied by the leaching of sulfuric acid, and the integral characterization and the assays permit to predict the leach behavior of the studied units and make possible the necessary blend of them in the industrial process.

TL;DR: In this paper, the pyrite oxidation rate was significantly influenced by temperature, partial oxygen pressure and particle size, and the model X=kt gave a good description of the reaction kinetics.

TL;DR: In this paper, the authors used a pseudo-second order model to study the uptake of nickel ions from aqueous solutions using protonated dry alginate beads, and found that the nickel uptake mechanism is explained by ion exchange between Ni ions and protons from the functional groups of the beads.

TL;DR: In this paper, the results showed that almost complete leaching of enargite (98%) could be obtained due to the elimination of passivation (S°) by the action of the oxidant.