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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. 18 (2015 year), No. 2
Sulimenko L. P., Koshkina L. B., Mingaleva T. A., Makarov D. V., Masloboev V. A.
The investigation of molybdenum migration in aqueous media landscape
of the Khibiny massif to develop environmental activities
Relations of natural and technogenic factors at forming of molybdenum making streams in superficial and underground waters in the Khibiny massif have been studied. The priority sources of receipt of molybdenum in water objects have been considered. Taking into account hydrogeochemistrical properties of molybdenum the terms of strategy of decline of its negative influence on superficial currents in the conditions of productive mining complex activity have been defined
(in Russian, стр.11, fig. 4, tables. 8, ref 8, 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. 23 (2020 year), No. 1, DOI: 10.21443/1560-9278-2020-23-1
Makarov D. V., Borovichev E. A., Klyuchnikova E. M. , Masloboev V. A.
Environmental protection and sustainable development of the mining industry in Murmansk Region, Russia
The mining complex of the Murmansk region (Russia) has a negative impact on natural ecosystems and worsens the quality of the environment, since the development of non-renewable mineral resources is associated with a significant transformation and destruction of natural communities. In the Murmansk region, where the mining industry forms the basis of the regional economy, the research aimed at achieving sustainable development goals involves the search for 1) new integrated approaches to ensure the development and implementation of environmentally friendly technologies for the extraction and processing of minerals; 2) managerial decisions supporting the transition to a circular economy; 3) the establishment and development of protected areas, including compensatory; 4) the restoration of disturbed landscapes; 5) the development of nature-like technologies for the recovery of valuable components from minerals, and 6) the protection of the environment. Futhermore, there is need for a constant search for some balance of interests of local communities and mining corporations in the context of environmental protection and economic development in order to maintain social sustainability. Without designing the foundations of the state policy for the transition to a closed-loop economy, the implementation of even existing technologies will be too slow. There is a survey of nature-like technologies developed in the Kola Science Center of the Russian Academy of Sciences for processing minerals and protecting the environment, rehabilitation of disturbed areas exposed to industrial air pollution, reclamation of the water and land areas polluted by oil and oil products as well as examples of territorial nature conservation that do not block the development of processing minerals.
(in English, стр.5, fig. 0, tables. 1, ref 29, AdobePDF, AdobePDF 0 Kb)
Vol. 24 (2021 year), No. 1, DOI: 10.21443/1560-9278-2021-24-1
Maksimova V. V., Krasavtseva E. A., Masloboev V. A., Makarov D. V.
Investigation of the solubility of dust particles in soil solution at different temperatures (on the example of the tailings of the loparite ores' concentration)
A number of large mining enterprises are located on the territory of the Murmansk region. Dusting overburden dumps and tailings storage sites leads to a complex of long-term consequences for the environment. The output of the silty fraction (–0.071 mm) of "stale" tailings of loparite ore dressing (the first field of the tailing dump) is about 22 %. The investigated material is represented by nepheline, microcline, aegirine; loparite, analcime are diagnosed in impurity quantities; the average content of cerium, lanthanum, neodymium – rare earth elements of the light group – 0.18, 0.03 and 0.015 %, respectively. In laboratory conditions, a simulation of the ingress of a fine fraction of loparite ore dressing tailings into the soil has been carried out; the interaction of tailings material with distilled water and water extract from conditionally background soil at different temperatures has been studied. In the course of the study, it has been found that the introduction of dissolved organic matter intensifies the processes of destruction and partial dissolution of the aluminosilicate matrix of rock-forming minerals; an intensive transition of rare earth elements and heavy metals into soluble forms has been recorded. The research results indicate the ecological danger of the finely dispersed material of "stale" tailings of loparite ore dressing due to the ingress of dust particles into the soil and their interaction with soil waters.
(in Russian, стр.10, fig. 8, tables. 1, ref 24, AdobePDF, AdobePDF 0 Kb)
Vol. 25 (2022 year), No. 1, DOI: 10.21443/1560-9278-2022-25-1
Amosov P. V., Baklanov A. А., Makarov D. V., Masloboev V. А.
Numerical modeling of atmospheric pollution in the approaches of random selection of discrete dusting sites and interval distribution of dust size
The results of numerical simulation of atmospheric pollution in Apatity are presented with variations in the dusting area of discrete spatially spaced areas selected randomly and the wind flow velocity. CFD modeling in the volumetric formulation was performed using the COMSOL program. To calculate the aerodynamic characteristics, an incompressible fluid approximation was used using the standard (k-?) turbulence model. The process of fine dust propagation is modeled by numerical solution of the convective-diffusion impurity transfer equation taking into account the deposition rate. Numerical experiments (with a total number of more than 1,400) were carried out with a variation of the wind flow velocity from 5 to 23 m/s and a dusting area from 2 to 10 ha with a random selection of 20 discrete sites. Dynamic velocity distributions for specific areas of dusting, interval and total spatial distributions of dust pollution (dust particles with a diameter from 0 to 70 microns in increments of 10 microns) are obtained. The peculiarities of the influence on the levels of atmospheric pollution of specific areas of Apatity depending on the location of dusty areas on the surface of the beach of the tailings dump are noted. The calculated levels of atmospheric pollution in the center of Apatity averaged by the number of combinations of dusting sites are analyzed and generalized to functional dependencies. The calculated dependences of the dust concentration on the dusting area at a fixed wind speed are described by linear functions. The dependence of the dust concentration on the wind flow velocity at a fixed dusting area can be approximated by a power function. The generalized functional dependence makes it possible to predict the dust concentration in Apatity depending on the dusting area of randomly selected discrete areas on the surface of the tailings dump and the wind flow velocity. The obtained dependence permits to make a forecast of the critical dusting area at which the level of atmospheric pollution reaches the maximum permissible concentrations, depending on the speed of the wind flow.
(in Russian, стр.13, fig. 4, tables. 5, ref 32, AdobePDF, AdobePDF 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)