scholarly journals Revaluation of alluvial deposits residual reserves of boulder chrome ores of the Saranovsky ore field

2020 ◽  
Vol 1 (2) ◽  
pp. 74-82
Author(s):  
Igor’ Viktorovich ABAKUMOV ◽  
Keyword(s):  
Industrial Development ◽  
Raw Materials ◽  
Balance Sheet ◽  
Individual Characteristics ◽  
Small Scale ◽  
Mining Operations ◽  
Alluvial Deposits ◽  
Mineral Raw Materials ◽  
Geological Conditions ◽  
Natural Reserves

Relevance of the work. After the collapse of the USSR, local ferroalloy industry experienced a deficit in certain types of mineral raw materials, in particular in chromium ores. In Perm Krai, in the vicinity of the village Sarany, medium and small-scale deposits of primary magmatic and fragmental slop wash ore of high iron content and alumina are known, previously used only as refractory raw materials. In the 1990–2000s, technologies for producing commercial and conversion ferrochrome with low chromium content (“charge-chromium”) using chromium ores of the Ural region, including ores from deposits of the Saranovsky group, were developed and introduced on an industrial scale. All this entailed the need for geological and economic revaluation of the reserves of known deposits, including placers of wash ores partially affected by mining operations of previous years. The revaluation included not only the residual natural reserves of deposits, but the technogenic formations in their areas containing underextracted ore round stones as well. Currently, the project for the development of boulder placers is being successfully implemented. The experience gained may be of interest in reassessing the residual reserves of objects of scarce types of mineral raw materials characterized by a complex "natural-technogenic" structure. Purpose of the work: to summarize the experience of joint revaluation of residual natural reserves and technogenic formations on the areas of placer deposits of boulder chrome ores aimed at ensuring the maximum completeness of excavation of scarce raw materials. Method and methodology of the work carried out. The main idea of the work is to jointly reassess the industrial importance of the residual reserves of boulder chrome ores contained in natural and man-made formations in placer areas. Given the relatively simple mining and geological conditions and small volumes of annual production, the criterion of “minimum industrial output of ore boulders”, which achieves equality of the recoverable value of mineral raw materials to the operating costs of obtaining marketable products, is proposed to be applied to the residual reserves of the placer, and not to individual geological blocks. This approach obliges the subsoil user to conduct continuous mining of the remaining reserves, to involve in the industrial development reserves of low-productive geological blocks, including those represented by technogenic formations, the average yield of ore boulders from which, as a rule, is lower than the estimated industrial minimum. The rational choice of placers that are simultaneously mined is justified by economic indicators used in the evaluation of mining projects (net present value, profitability index, budget efficiency, etc.), taking into account the “individual” characteristics of individual deposits. The proposed approach to involving in the development of reserves of low-productive areas (including technogenic formations) can be implemented not only at the level of individual deposits, but at the level of a group of “converging” differently productive placers as well, when both highly productive and “poor” placers are being developed, the reserves of which in the traditional assessment are classified only as off-balance sheet (potentially economic). Results of the works. The description is given of methodological approaches to the revaluation and rational use of residual reserves of boulder chrome ores disrupted by mining operations of previous years. The experience gained can be used to evaluate other mining facilities that contain natural and technogenic formations of different productivity on their area.

Role and importance of mineral resource complex in national economies: solid minerals

2020 ◽  
pp. 3-11
Author(s):  
A. L. Dergachev
Keyword(s):  
Mineral Resource ◽  
Emerging Economies ◽  
Industrial Development ◽  
Raw Materials ◽  
State Budget ◽  
Mineral Raw Materials ◽  
Economy Growth ◽  
National Economies ◽  
Mineral Rents ◽  
Multiplicative Effects

As the economy growth it gets unfeasible for emerging economies to maintain high and stable rates of economic growth predominantly owing to increase of mining production, expansion of mineral export and recovery of mineral rents. However, while direct contribution of mining and processing of mineral materials to national economy is reduced, mineral resource complex acquires a new function — supplying related industries with mineral raw materials, remains important factor of further accelerated industrial development, contributes to state budget, helps to solve employment problem and secures important multiplicative effects in national economies.

Improving Safety when Extracting Water-soluble Ores by Optimizing the Parameters of the Backfill Mass

2021 ◽  
pp. 53-59
Author(s):  
M.M. Khayrutdinov ◽  
◽  
Ch.B. Kongar-Syuryun ◽  
A.M. Khayrutdinov ◽  
Yu.S. Tyulyaeva ◽  
...  
Keyword(s):  
Strain State ◽  
Raw Materials ◽  
Research Work ◽  
Integrated Approach ◽  
Water Soluble ◽  
Mining Operations ◽  
Stress Strain ◽  
Mining System ◽  
Stress Strain State ◽  
Geological Conditions

The results of the scientific and research work devoted to modeling the stress-strain state of the mining system of an underground mine using the finite element method in the FLAC3D software are presented in the article. The possibility of using room-and-pillar mining with backfill with the abandonment of chain pillars is justified. The results are presented concerning the research results of the quantitative assessment of the mass using the von Mises equation and Norton' power law of creep to estimate the contour stress. It becomes possible to determine the sequence of mining of the deposit area and the stage-by-stage filling of the stopes at the stage of mining design due to the high accuracy of modeling the stress-strain state of the mass near mining operations using FLAC3D software. The proposed approach is possible when evaluating the geotechnical state of the rock mass when using the mining systems with various methods of support of the mined-out area: natural; artificial; with the collapse of ores and enclosing rocks, as well as when calculating the combined method of deposit development. A differentiated approach to assessing the state of the mass is possible considering difficult mining and geological conditions, conditions of increased rock pressure, abundant water influx, increased fracturing of rocks by introducing additional conditions into the model depending on its geotechnical state. Variant of the comprehensive exploitation of mineral resources was proposed considering the total value of natural and man-made geo-resources of the area being mined. The possibility of rational use of the mined-out space with the use of various positive qualities of geo-resources at their manmade transformation is also considered. An assessment of the mineral and raw materials potential of the mined area is given with a proposal for the prospects of increasing the integrated approach of excavation, increasing the life of the mining enterprise and the complexity of developing this area.

scholarly journals GEOLOGICAL INDUSTRIAL ASSESSMENT AND RANKING OF PROMISING OBJECTS OF THE DOMESTIC BASE OF RARE EARTH ELEMENTS

2021 ◽  
pp. 32-40
Author(s):  
V. Mykhailov ◽  
M. Kurilo ◽  
S. Kosharna
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Industrial Development ◽  
Raw Materials ◽  
Technological Development ◽  
Energy Transition ◽  
Green Energy ◽  
High Tech ◽  
Mining Operations ◽  
Field Development

Changes in the priority areas of financing in the field of subsurface use and their widespread reorientation to the search for alternative sources of raw materials which could ensure the development of modern high-tech industries are the promising direction for the country's growth in sustainable development conditions and Green Energy Transition. And at the moment the only resource that can ensure safe progress in the future and plays an important role in today's technological development is rare earth elements (REE). Within the framework of this study information on the current state of awareness about the REE mining prospects in Ukraine was analyzed and generalized; the systematization and updating of available data on quantitative and qualitative REE ore occurrences and deposits characteristics and their geological and industrial parameters was done; the main obstacles / barriers to the active mining development on these objects of potential extraction were identified. The obtained ranking results of domestic deposits and REE manifestations prove the expediency of investing in geological exploration and mining operations conducted in certain areas, which are identified as the most attractive for further industrial development and generally emphasize the prospects of the studied area and justify the need in intensification of selected rare earth objects field development.

scholarly journals Prospects and priorities for the reconstruction and development of lithium mining production on the basis of domestic raw materials

2022 ◽  
Vol 962 (1) ◽  
pp. 012055
Author(s):  
G B Melentiev ◽  
G A Yurgenson ◽  
L M Delitzyn
Keyword(s):  
Industrial Development ◽  
Raw Materials ◽  
Import Substitution ◽  
Processing Plant ◽  
Mineral Raw Materials ◽  
Useful Components ◽  
Reliable Source ◽  
New Energy ◽  
Modern Technologies ◽  
Production Facilities

Abstract The prospects of lithium as a component of new energy are considered. Provides data on the resources of lithium mineral raw materials. Variants of the reconstruction of lithium production facilities in Russia from domestic raw materials are evaluated in order to solve the problem of import substitution. Attention is focused on the choice of objects of priority industrial development and the need to create modern technologies for processing lithium raw materials. It is shown that the restored Zabaikalsk mining and processing plant can be a reliable source of lithium when using new technological solutions for extracting lithium and associated useful components from primary ores and waste of spodumene ores.

scholarly journals Application of an improved mining complex for opencast mining of ore deposits

2021 ◽  
Vol 44 (4) ◽  
pp. 441-447
Author(s):  
A. Y. Cheban
Keyword(s):  
Raw Materials ◽  
Dump Truck ◽  
Opencast Mining ◽  
Mining Equipment ◽  
Mining Operations ◽  
Mineral Raw Materials ◽  
Loading Process ◽  
Engineering Solution ◽  
Natural Concentration ◽  
Mining Complex

The purpose of the study is reducing the loss of mineral raw materials and increasing the efficiency of mining operations using a mining complex through the introduction of a new design and engineering solution that improves the equipment functionality. The study involves the analysis of known designs of mining equipment capable of providing the transformation of cyclic scooping of rock mass into its continuous loading, as well as screening of fine fractions from the ore mass. High productivity mining complexes are referred to a promising direction of mining equipment development. The article proposes an improved design of the mining complex, which allows to combine the extraction and loading process and ore mass grading. The improved mining complex is equipped with an annular conveyor with vibrating grids through which fines are screened into the accumulation hopper. From the accumulation hopper the small fractions are sent by means of a pneumatic conveying system to the bunker sections of a special-purpose hauler while the oversize product is loaded into a dump truck by a dump conveyor. The fine fractions of substandard ore collected in the bunker sections are sent for heap leaching. The fine fractions of conditioned ore are sent to the concentration plant to be processed. The proposed design and engineering solution employing an improved mining complex will reduce the cost of works and increase the recovery factor of mineral raw materials in the development of complex-structured deposits of ores characterized by natural concentration of small classes. Removal of fine ore fractions directly during the excavation and loading process can significantly reduce the dusting and decrease the loss of mineral raw materials from blowing and spilling of fine fractions.

scholarly journals The role of mining industry in the world economy and the economy of Ukraine

2020 ◽  
pp. 23-29
Author(s):  
G. I. Rudko
Keyword(s):  
World Economy ◽  
Raw Materials ◽  
Mining Industry ◽  
Developed Countries ◽  
Material Base ◽  
Mining Operations ◽  
Mineral Raw Materials ◽  
The World ◽  
The Impact

The level of development has been considered, the impact of mining industry on the world economy and its connections with other spheres of the world economy have been analyzed. Today mining industry is not only one of the leading fields of global economy, but it has also promoted the emergence of other fundamental branches. The development of this sphere is extremely important not only for the state, which plays the role of a regulator, but also for investors, contractors, suppliers, service companies, indigenous population and consumers. Due to its long-term development, mining industry differs from the majority of other kinds of human activity. Diversified mining industry is generally a prerogative of highly developed countries since only several segments are often functioning in less developed countries, and sometimes mineral raw materials are only extracted there. Nowadays no country in the world possesses full range of all types of rocks and minerals. Basic tendencies in development of extraction of mineral raw materials in different countries have been described. The current state of global mining industry can be called the advent of the so-called new era due to the increase of cost of mineral raw materials; however it is also necessary to develop the fields even with quite small and low-quality mineral reserves. Mining operations and development of mineral deposits are being relocated from the developed countries to the developing ones. It is better to consider the possibility of improvement of already existing objects instead of building brand new ones for more efficient and easier operation of mining companies. Problems of functioning and obstacles of development of mining enterprises in Ukraine under current conditions have been determined, ways of their elimination and increase of effectiveness in the branch in general have been proposed. National mining industry is adversely affected by such external factors as the global financial and economic crisis, processes of globalization. Although the mineral-raw material base of Ukraine has a sufficient amount of explored reserves of most mineral resources, it is currently at the stage of depletion of the subsoil, which requires the reformation of the economic mechanism for its use.

TECHNOLOGY OF DEVELOPMENT OF COMPLEX STRUCTURAL DEPOSIT WITH APPLICATION OF IMPROVED MINING AGGREGATE

2020 ◽  
Vol 3 (1) ◽  
pp. 209-219
Author(s):  
A.Y. CHEBAN ◽  
Keyword(s):  
Structural Unit ◽  
Raw Materials ◽  
Selective Extraction ◽  
Resource Saving ◽  
Mining Operations ◽  
Basic Principles ◽  
Mineral Raw Materials ◽  
Complex Structural Unit ◽  
Complex Structural ◽  
Discharge Gap

It is proposed to conduct selective extraction of conditioned and substandard ore of an exploded complex structural unit using an improved mining aggregate equipped with a classification grid with rotary grates and a crusher with an adjustable size of the discharge gap, which will allow one of the basic principles of resource saving - not to crush anything superfluous. The proposed technical and technological solution will significantly increase the productivity of mining operations, increase the extraction of mineral raw materials from the developed complex structural unit due to separation from substandard ore enriched with a useful component of ore fines, as well as reduce dusting and reduce the loss of mineral raw materials from blowing and spilling during loading and transportation.

scholarly journals Economics of mining

2018 ◽  
Author(s):  
Зерема Хашева ◽  
Zerema Hasheva ◽  
Владимир Голик ◽  
Vladimir Golik
Keyword(s):  
Economic Efficiency ◽  
Raw Materials ◽  
Mining Operations ◽  
University Professors ◽  
Mineral Raw Materials ◽  
Technological Processes ◽  
Economic Support ◽  
Wide Range ◽  
Production Resources

In the textbook sets out the basic Economics of mining enterprises. Discusses the economic efficiency of production resources, innovative activities, the characteristic technologies of development of deposits of mineral raw materials, systematized the main directions of economic support of the processes of mining, described the latest technological processes in mining operations. The manual is intended for students and University professors, managers of industries, mining engineers, and a wide range of readers.

UNIDO, Industrial Processing of Natural Resources. New York: United Nations. 1981. viii + 78pp.US $ 5.00. [United Nations Publication Sales No. E. 81. 11 . B.1]

1982 ◽  
Vol 21 (4) ◽  
pp. 329-333
Author(s):  
Rashid Aziz
Keyword(s):  
New York ◽  
United Nations ◽  
Industrial Development ◽  
Raw Materials ◽  
Developed Countries ◽  
Raw Material ◽  
Industrial Processing ◽  
Depth Study ◽  
Manufactured Exports ◽  
Year 2000

The book under review is a concise but fairly in-depth study of the prospects for export diversification from the Less Developed Countries (henceforth labeled as LDCs) particularly to Developed Countries (henceforth labeled as OCs). Given the multiple problems faced by the LOCs in exporting to the OCs - protectionist policies with regards to manufactured exports, volatility of prices obtained for raw material exports, etc. - the study analyses the potential for following an intermediate route. The important issues in the export of semi -processed and wholly processed raw materials are discussed. 111ese issues range from the problems and potentials for the location of processing facilities in the LOCs to the formulation of appropriate policies to encourage an export of processed goods rather than raw materials. Such policies will be useful both in solving the balance of-payments problems of the LDCs and in attaining the goal of the Lima Declaration and Plan of Action on Industrial Development and Co-operation, that called for 2S percent of world industrial production to be located in the LOCs by the year 2000.

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