Se seleccionaron dos áreas, S. Almagrera (Almería) y “Cabezo S. Cristobal” (Mazarrón, Murcia), explotadas en el pasado para la obtención de Pb, Zn, Fe y Ag y subsecuentemente barita (S. Almagrera), en la actualidad las labores mineras están abandonadas. En ambas áreas la mineralización es similar, destacando por su interés económico la paragénesis ...
Published in Journal of Central South University of Technology
In order to investigate the effective control method of spontaneous combustion in the mining of sulfide ore deposits. This paper presents the testing results of several selected chemicals (water glass, calcium chloride, calcium oxide, magnesium oxide and their composites) as oxidation suppressants for sulfide ores. A weight increment scaling method...
Published in Journal of Mining Science
The changes in technological properties of sulfide minerals of copper-nickel ore of technogenic products under conditions of humid climate are considered. It is shown that the concentration selectivity decreases during storage.
Published in Journal of Mining Science
The mechanism of interaction of sodium dimethyl dithiocarbamate and xanthate with the surface of pentlandite and pyrrhotine is investigated. The basic forms and features are determined for the forming surface compounds on flotation.
Published in Journal of Mining Science
Kinetics of sulfide decomposition and gold dissolution during electrochemical extraction is described. The results are presented for the experiments on electrochemical extraction of gold from sulfide ores of the Kazakhstan deposits using sodium salt at the “ABS” Concern. The economically efficient parameters of applying leaching technology for rebe...
Ab initio quantum-chemical calculations of the spatial and electronic structures of sphalerite (ZnS), pyrite (FeS2) and galena (PbS), using the density functional theory (DFT) local density approximation (LDA) and generalized gradient approximation (GGA), the Hartree–Fock (HF) method and the hybrid functional B3LYP, have been carried out. For galen...
Published in Journal of Central South University of Technology
In order to achieve a more efficient way to accurately detect the position of the fire source of spontaneous combustion underground mine, a simple fire source locating method, based on infrared scanning system which can determine the point where the highest temperature on the surface of igniting ores occurs, was proposed. First, the differential eq...
Published in Journal of Central South University
Three representative sulfide ore samples were collected from typical metal mines, and their corresponding pre-oxidized products were obtained under nature environment. The thermal behaviors of each sample at heating rates of 5, 10, 15 and 20 °C/min in air flow from ambient temperature to 800 °C were studied by simultaneous thermal analysis and the ...
Published in Journal of Analytical Chemistry
The potentials of the multielement X-ray fluorescence analysis of sulfide ores from one sample are studied. Using cluster analysis, sulfide ores are divided into four groups; within each group, the ores are similar in chemical composition and matrix effects. Calibration equations are obtained for each group. The performance characteristics of the d...
Published in Metallurgical Research & Technology
In recent years, there has been an increasing focus on the utilization of copper-arsenic ore. In this paper, the flotation behavior of arsenic and copper minerals from Peru copper ore was investigated. The results obtained from the flotation tests indicate that the grinding fineness and the lime dosage have significant effects on the flotation of c...
