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Likhacheva S.V.,JSC Kola Mining and Metallurgical Company | Neradovskiy Yu.N.,Russian Academy of Sciences
Tsvetnye Metally | Year: 2013

This article considers the types of losses of nickel with flotation tailings. There is shown, that losses of nickel with concentration tailings are constant and make up 20-25% of total content in ore. These losses are formed from opened sulphides' grains, natural joints and anthropogenic formations. Nickel is included there in silicate, sulphide and oxide forms. In authors' opinion, 45% of losses contain objective irreversible losses, substantiated by nickel inclusion into the composition of lattices of various rock-forming minerals. Content of nickel admixtures in main rock-forming mineral (serpentine) is not large. However, at the expense of mass, this mineral contains ~10% of these admixtures. The rest 55% are connected with main ore mineral - pentlandite, which explains the possibility of their decreasing. In author's opinion, losses of pyrrhotine with concentration tailings are one of important factors of Pechenga ingrained ores' concentration process. The part of released pyrrhotine grains in tailings is from 60% to 90% of its content in discharges, which corresponds about its incomplete flotation. Calculations of nickel balance on mineral phases corresponds that losses of nickel in isomorphous form with pyrrhotine are ~10% in average. However, they become significantly increased due to the pentlandite admixtures in pyrrhotine. Flocculation of pyrrhotine particles by magnetite is one of the reasons of its losses. Magnetic nickel-bearing pyrrhotine is actively blocked by slag particles of magnetite. Together with pentlandite joints, this pyrrhotine is depressed in the sandy part of flotation products. Under-extraction of pentlandite and aggregation processes of slime particles also belong to anthropogenic factors. Taking into account the modern concentration technologies, solving of concentration tailings exhaustion problem is problematic and requires some non-traditional technological solutions, such as demagnetization of ferromagnetic minerals or destruction of floccules by ultra-sound and other methods. Source

Forecasting of expected ore concentration indices is a necessary element of increasing of technological process efficiency. For this purpose, results of geological and technological mapping of deposits can be applied within efficient and prospective planning. Geological and technological mapping is provided by systematic works on researching of spatial variability of chemical and mineral contents and technological properties of ores in ore bodies. Together with the depth of occurrence, there takes place the considerable changing in relations and nature of distribution of grades in ore bodies, in comparison with superposed horizons. This changing leads to the worsening of technological properties of ores. Analysis of real volumes of ore extraction from mining units of ore bodies with analytic database formation is carried out for the purpose of definition of ore charge composition by geological and technological properties and its influence on index of nickel extraction into the finished concentrate. There is shown the sequence and methodology of analytic databases formation, calculations accomplishment and results application. The carried out calculations and analysis have shown the influence of irregularity of volumes of ore extraction from mining units in ore bodies on changeability of substantial composition parameters and technological properties of raw materials, supplied to processing at concentration plant. Application of real-time forecast on the basis of mathematical processing methods gives an efficient information about parameters of substantial composition of extracted ore, which is going to be processed at concentration plant in the nearest time (in 2-3 days). This will make it possible to carry out the opportune corrections of technological modes. Source

Bityugin I.V.,JSC Kola Mining and Metallurgical Company
Tsvetnye Metally | Year: 2013

This article describes the history of design, construction and exploitation of bund walls of concentration plant's tailing dump. All used terms and abbreviations are described in the beginning of the article. There are given the main important dates, associated with commissioning of hydraulic structures. The problems, which arose during the operation of the 1-st field of tailing dump, are considered as a part of the "Alluvial dam". There are presented the key measures, which were carried out for resolving of identified problems and their consequences. There are described the scheme, intensity and frequency of alluvium on the 1-st field of tailing dump till 1974 and on the 2-nd field of tailing dump till the present day. As a part of the "Dam embankment", there are briefly described the engineering decisions, which were made in the past years for the usage of various soils during the backfilling of river embankments for alluvium tiers fencing. There are also given the basic geometric parameters of these decisions. As a part of the "Fun Facts", there is given the information of the 1970s projects about the possible ways of bund walls construction (alluvial - "A" and water inlet - "B"). There are noted the strengths and weaknesses of exploitation of received and rejected ways of dams building. There are considered the aspects of separate hydraulic transport of control and industrial product flotation tailings. This separate hydraulic transport was proposed in the project task in 1969. As a part of the "Problems and Solutions", there are described the main problems, which appear during the dams alluvium (using the alluvium technology, which was accepted in 1983), and during the construction of the tailing dump river embankments. For the purpose of resolving of identified problems, the option of hydrocyclones usage during the alluvium process for improvement of tailings fractioning on the beach was considered in the first case. In the second case, there was considered the way of construction of river embankments from anthropogenic soils, including the usage of variety design and technical solutions. Source

Salamov O.S.,JSC Kola Mining and Metallurgical Company
Tsvetnye Metally | Year: 2013

During the 2011, Kola Mining and Metallurgical Company developed the modernization concept of owned warehousing, taking into account the peculiarities of placing of the Company's organization departments (consumers of materials and equipment). The first stages of planned measures were realized in 2012: - organization of united warehouse of ground storage of metal-roll and large equipment in Zapolyarny town; - reconstruction of industrial buildings area in Nikel settlement for creation of materials pallet storage warehouse. Warehouses were equipped with application of modern materials, shelves and special facilities, which made it possible to decrease the part of manular labour in warehouse handling of goods. Organization of materials shelf storage warehouse in Nikel settlement made it possible to change the logistics of supplies of material and technical resources, and to decrease the transport costs on materials delivery from warehouse to consumers. New warehouse areas were organized considering the further plans of Kola Mining and Metallurgical Company on introduction of automated warehouse cargo management system and further application of modern equipment in warehouse processing of cargo. Source

Volkov V.N.,JSC Kola Mining and Metallurgical Company | Makeev V.I.,JSC Kola Mining and Metallurgical Company
Tsvetnye Metally | Year: 2013

This article shares the history of exploration and development of sulphide-copper nickel ore deposits of Kola Peninsula by Severonickel and Pechenganickel combines. Thirteen deposits were totally explored and set on balance. By now, 5 of these deposits have been completely developed. Yearly periods of deposits development are described together with extraction amounts of ore and metals, and extraction indices of these deposits. This article detaily describes the following information about the Kola Mining and Metallurgical Company: - current status of mining process stage of the Company; - history of development of Zapolyarnoye deposit by Severny mine; - history of development of upper part of Zhdanovskoe deposit by Tsentralny open cast mine; - conversion from open cast to underground mining of Zhdanovskoe deposit by Severny-Gluboky mine in 2004. There is also described the choice of development systems of Severny-Gluboky mine. The sublevel partial ore caving development was accepted as the basic system. The modern mobile equipment of leading world producers is applied for realization of this system. In conclusion, there are given the future basic stages of development of mining complex of Kola Mining and Metallurgical Company: - increasing of productivity of Severny-Gluboky mine to 7.5 mln t at the expense of construction of Yuzhny underground section; - finishing of development of Zapolyarnoe deposit in 2020; - finishing of development of Kotselvaara-Kammikivi and Semiletka deposits in 2023; - involving of Sputnik and Verkhnee reserve deposits into development for the purpose of keeping of reached level of metals extraction. Source

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