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Vol. 18 (2015 year), No. 2
Svetlov A. V., Potapov S. S., Potapov D. S., Kravchenko E. A., Erokhin Yu. V., Potokin A. S., Selivanova E. A., Suvorova O. V., Kumarova V. A., Nesterov D. P., Makarov D. V., Masloboev V. A.
Investigation of possibility of recovery nonferrous metals and producing building materials from copper-nickel smelterslag
Pelletized slag of copper-nickel smelter ("Pechenganikel" combine, "Kola MMC" JSC) has been investigated as a potential technogenic deposit. It has been shown that nonferrous metals can be re-extracted from slag using flotation. The work presents the results of laboratory simulation of heap leaching of non-ferrous metals. Ceramic building materials from slag-based feed have been produced and their main properties have been studied
(in Russian, стр.10, fig. 6, tables. 4, ref 18, Adobe PDF, Adobe PDF 0 Kb)
Vol. 20 (2017 year), No. 1, DOI: 10.21443/1560-9278-2017-20-1/2
Svetlov A. V., Makarov D. V., Potapov S. S., Nekipelov D. A., Seleznev S. G., Masloboev V. A.
Research of leaching of disseminated copper-nickel ores
in their interaction with mine waters
A great amount of mine waste creates serious problems for economy and ecology in mining regions. Keeping of dumps and tailings storages requires huge capital costs and material inputs. Removal of overburden volumes cause ecological disequilibrium, ingress of chemical agents and heavy metals in ground and surface water have an adverse influence on eco-systems and human health. These hazards are particularly high under extreme climatic conditions, when mines create vast desert lands around themselves. Foreign researchers use the terms "acid mine drainage" (AМD) and "acid rock drainage" (ARD) when speaking on mine water oxidation and contamination of the environment with heavy metals. AMD is induced by underground mine drainage, natural sulfide-bearing rock exposures, etc. The processes occurring in the interaction the mine water with fine dust particles, as well as water filtering through the thick sulfide rocks have been studied. It has been shown that the reduction in potential environmental hazard of mine water of JSC "Kola MMC" is achieved through precipitation of heavy metals by iron hydroxide and magnesium hydrosilicate. Preliminary assessment of the feasibility of hydrometallurgical processing of disseminated copper-nickel ores has been made
(in Russian, стр.12, fig. 8, tables. 1, ref 16, Adobe PDF, Adobe PDF 0 Kb)
Vol. 25 (2022 year), No. 2, DOI: 10.21443/1560-9278-2022-25-2
Potapov S. S., Parshina N. V., Myazin V. A., Evdokimova G. A., Makarov D. V., Goryachev A. A.
The mineral composition of sediments and the reasons for their formation in the heating and hot water supply systems of the towns of Apatity and Kirovsk (the Murmansk Region)
The development of the housing and communal complex is focused on ensuring guaranteed access of the Russian population to high-quality drinking water. Due to the deterioration of drinking water quality, the mineral composition of sediments in the heating and hot water supply systems of the towns of Apatity and Kirovsk (the Murmansk region) has been studied. It has been established that sediments in the heating system mainly consist of iron oxides and oxyhydroxides: magnetite, goethite and lepidocrocite. All these mineral phases are products of active oxidation (corrosion) of steel pipes and heating system equipment. No mineral phases of ferrous forms of iron have been found in the sediment, which indicates sharply oxidizing environment in the heating system. The presence of sulfur-containing mineral phases, namely, anhydrous calcium sulfate – anhydrite and elemental sulfur, has been recorded in the heating system of the Apatity combined heat and power plant. Indirectly, the presence of such sulfur-containing phases may indicate the possible presence of microflora (bacteria) in the heat-transfer agent, in the metabolic processes of which sulfur and sulfur-containing compounds are involved.
(in Russian, стр.8, fig. 6, tables. 0, ref 8, AdobePDF, AdobePDF 0 Kb)
Vol. 26 (2023 year), No. 2, DOI: 10.21443/1560-9278-2023-26-2
Goryachev A. A., Makarov D. V., Potapov S. S., Belyaevskiy A. T., Semushin V. V., Kompanchenko A. A.
Processing of ore from the Nud II deposit by the method of low-temperature roasting with ammonium sulfate
The Murmansk region has a significant amount of sulfide copper-nickel raw materials. Deposits of the Nud massif associated with Monchepluton are promising for processing. The Nud II deposit cut-off grade ore with an initial Ni content of 0.45 % and Cu of 0.39 % has been chosen as the research object. During the research, the ore was mixed with ammonium sulfate, grinded, and the mixture was roasted in a muffle furnace with static air atmosphere. The roasted mixture was leached in heated distilled water with constant stirring. The maximum metals recovery was achieved when crushing to a fraction of –40 µm, the ratio of ore : ammonium sulfate is equal to 1 : 7, roasting temperature 400 °C, roasting duration 300 min. In the mixture roasted at these parameters, reflexes of copper and nickel sulfates were recorded by the x-ray phase analysis (XRD) method. At the stage of water leaching, the maximum recovery was: Ni – 79.1 %, Cu – 75.8 %.
(in Russian, стр.13, fig. 10, tables. 0, ref 15, AdobePDF, AdobePDF 0 Kb)