Thermodynamic Modeling of Hypergene Processes in Copper-Nickel Ore Tailings under Different Temperature and Moisture Regimes
S. I. MAZUKHINA, V. A. MASLOBOEV, D. V. MAKAROV
Institute of the North Industrial Ecology Problems - Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”, Apatity, Russia
Keywords: thermodynamic modeling, copper-nickel ore tailings, hypergene processes, pore solutions, newly formed mineral phases
Pages: 68-78
Abstract
Thermodynamic modeling of hypergene processes in copper-nickel ore tailings was performed with the variations of temperature (3 and 20 oC) and water evaporation processes in the upper layers of tailings during summer months at low filtration coefficients. It is established that the major cations of pore solutions are magnesium, calcium, nickel and copper ions, while predominant anions are sulphate and hydrocarbonate ions. The main newly formed phases in the system are the minerals of smectite group, as well as goethite, carbonates, silica, chlorite and gypsum.
DOI: 10.15372/CSD2021279
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