scholarly journals Research of the properties of rocks during fragmenting and crushing in mechanical mills

2021 ◽  
pp. 81-87
Author(s):  
GOLIK Vladimir Ivanovich ◽  
Keyword(s):  
Energy Consumption ◽  
Raw Materials ◽  
Experimental Studies ◽  
Mining Industry ◽  
Pulse Amplitude ◽  
Resource Base ◽  
Crushed Material ◽  
Mineral Raw Materials ◽  
Systemic Crisis ◽  
The Impact

Relevance and purpose. The systemic crisis in the mining industry has weakened the provision of the industry with proven reserves of the main types of minerals, which has made the search for technological solutions in order to restore the lost potential of the mineral resource base. Methodology. Theoretical studies of the movement of the grinding charge in the grinding chambers of planetary mills are based on the postulate of the equivalence of the forms of movement of the charge in mills. Grinding equipment of a new technical level is being improved in the direction of increasing the intensity of the effect of grinding bodies on the crushed material. The aim of the study is to increase the intensity of the impact of grinding bodies on the crushed mineral raw materials while minimizing the energy consumption of processing processes. The goal is achieved by integrating analytical and experimental studies with elements of engineering forecasting and modeling of the results. Results and scope. The results of studying the properties of rocks and their changes as a result of crushing and grinding in mechanical mills are presented. Information about devices for measuring the parameters of shock pulses and the practice of their application is systematized on the example of geological differences of rocks. Bench studies have confirmed the theoretically substantiated phenomenon of shock pulse amplitude suppression. The role of the processes of crushing and grinding in mills in the technological chain of waste-free utilization of the tailings of the concentration of chemically exposed ores is detailed. Сonclusions. The phenomenon of increasing the intensity of the impact of grinding bodies on the crushed mineral raw materials with the same energy consumption of processing processes can be used in the modernization of technologies for the development of mineral deposits.

scholarly journals Combined activation technologies mineral raw materials

2021 ◽  
pp. 100-105
Author(s):  
V.I. Golik ◽  
A.V. Titova
Keyword(s):  
Raw Materials ◽  
Mechanical Energy ◽  
Mining Industry ◽  
Resource Base ◽  
Crushed Material ◽  
Mineral Raw Materials ◽  
Centrifugal Mill ◽  
Ore Processing ◽  
Technological Chain ◽  
The Stability

Relevance. The efficiency of using the products of subsoil exploitation is a factor in strengthening the mineral resource base of the mining industry. The success of improving ore preparation technologies is associated with the activation of mineral raw materials in mills, including impact mills – disintegrators. A fundamentally new approach to ore processing technology includes a combination of grinding methods in mills and other activators. The issues of increasing the activity of substances on the basis of combination form an urgent scientific and industrial problem. The aim of the study of the phenomenon of combined activation is to search for the possibility of increasing the level of activation, to ensure the stability of the acquired activity and to establish patterns of relationships between the activation processes and the technological processes of using mineral raw materials. Objects: products of the development of deposits of solid mineral raw materials in various mining sectors of the national economy. Methods: Laboratory, semi-industrial and industrial experiment using improved equipment for the activation of mineral raw materials. Results. The concepts of “mechanical activation” in mills and “activation with large mechanical energy” in a disintegrator are detailed. An assessment is given to the directions of improving the mills. The results of mechanochemical activation of powders oxides in a planetary centrifugal mill “Aktivator-2s” are given. The practice of activating mineral raw materials with a combination of activators of various types is described. It has been established that the efficiency of combining mills depends on the initial size of the crushed material and equipment options are recommended depending on this. It is shown that the combination of drum and vibration mills reduced the energy consumption of the product. The results of the combination and the vibrating mill in the technological chain of the concrete complex are presented. The algorithm for the combined activation of mineral raw materials is illustrated by the example of the technology applied at the mine, which includes grinding, mixing binders, inert aggregates and grout, as well as transporting the concrete mixture to the place of use. As a quantitative indicator of activation, an equivalent of activity or a proportional ratio of the combined components is proposed. The efficiency of using solid mineral raw materials increases when it is prepared in activators.

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.

scholarly journals The regionalization of territorial combinations of mineral deposits and mining territories of Ukraine

2019 ◽  
Keyword(s):  
Mineral Resource ◽  
Raw Materials ◽  
Mining Industry ◽  
Mineral Resources ◽  
Scientific Basis ◽  
Raw Material ◽  
Mineral Deposits ◽  
Resource Base ◽  
Mineral Raw Materials ◽  
Current State

The purpose of the article is using the data of Geoinform of Ukraine on the current state of the mineral resource base of the country, to regionalize its territory by combining explored mineral deposits and production-territorial complexes formed on their basis with a mineral raw material orientation. Research results. The article is written in the context of the constructive-geographical direction of studying the geography of mineral resources, which has been developing in the last decades in Ukraine. In particular, three approaches to regionalization of territorial combinations of mineral deposits are compared and analyzed: geological, economic-geographical and mining, which will contribute to their interconnection in characterizing the mineral-raw materials complexes of individual regions. The authors’ own interpretations of discussion definitions of mining terminology are proposed. Based on the results of previous studies and taking into account the current state of the mineral resource base, economic-geographical and mining zoning of the territory of Ukraine has been carried out for groups of explored mineral deposits. Within Ukraine, four mineral resource zones are allocated: Prydniprovsko-Pryazovska, Eastern Ukrainian, Donetsko-Slovianska and Prykarpatska, as well as several territorially separate structures: Zakarpatskyi, Lvivsko-Volynskyi, Podilskyi, Kerchenskyi, Krymskyi macrodistricts, Zhytomyrskyi and Pobuzkyi districts. A detailed description of the mineral and raw material specifications of these structures and their constituent parts, the features and prospects of their exploitation, the formation of territorial-production complexes of mineral and raw materials orientation are submitted. Scientific novelty. For the first time, various approaches to the regionalization of territorial groupings of mineral deposits and mining territories are compared, the basic definitions of mining regionalization are presented, and on this basis their own variant of zoning the territory of Ukraine on mineral resources is proposed. Practical value. The economic, geographical and mining zoning of the territory of Ukraine according to the forms of concentration of mineral deposits and mining areas will help create the scientific basis for optimizing the structure of the mining industry, ensuring the effective use of mineral raw materials, and developing the country's raw material complex.

scholarly journals EQUIPMENT MODIFICATION FOR FINE GRINDING OF MINERAL RAW MATERIALS

2021 ◽  
Vol 13 (2) ◽  
pp. 292-303
Author(s):  
Valery KHETAGUROV ◽  
◽  
Evgeny KAMENETSKY ◽  
Mikhail GEGELASHVILI ◽  
Azamat MARZOEV ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Stokes Equations ◽  
Raw Materials ◽  
Bulk Material ◽  
Specific Productivity ◽  
Crushed Material ◽  
Mineral Raw Materials ◽  
Centrifugal Mill ◽  
Working Space ◽  
Grinding Operations

Introduction. The huge energy costs of fine and ultrafine grinding operations have led to numerous studies aimed at developing new devices and methods for producing powdered materials. The first way leads to an increase in specific productivity while maintaining energy consumption at approximately the same level. The second way allows not only to increase the specific productivity, but also to reduce the specific energy consumption, since with a decrease in the exposure time, the body is more easily deformed and destroyed. The grinders in which the intensification of the destruction process is carried out in the first way can include planetary and vibrating mills. The second method of intensification is used in jet and various types of centrifugal mills. It is determined that vertical centrifugal mills are the equipment of a new type that can effectively perform grinding operations at high technological indicators and low energy consumption. The purpose of the research. Development of measures for obtaining a finely dispersed product by destroying mineral raw materials in vertical centrifugal mills by mechanical means. Research methodology. The paper uses a comprehensive research method: analysis of the state of grinding equipment according to literary and patent sources; development of mathematical models of the movement of bulk material in the working space of a vertical centrifugal mill based on the Navie-Stokes equations; computer modeling of the movement of the crushed material using the OpenFOAM package for solving hydrodynamic equations; a solver program was created to perform calculations, implementing the SIMPLER algorithm and using the MRF model; laboratory experiments; granulometric method for the analysis of grinding products; fractional analysis of crushed material with a grain size of 0.08 mm using an X-ray analytical centrifuge ВrооkhаvеnBI-ХDС. The development of measures for the effective evacuation of the crushed product from the working space of a centrifugal mill was evaluated by comparative tests of mills using various design solutions. Research results and discussion 1. It is established that vertical centrifugal mills are the devices of a new type capable of effectively performing grinding operations at high technological indicators and low energy consumption. 2. A mathematical model of the movement of bulk material in the working space of a vertical centrifugal mill has been developed based on the Navier-Stokes equations, which allows determining the speed and direction of movement of material layers at any point in the working space, the energy costs for their movement, the influence of the height of the material column on the nature of its movement in the space above the rotor. 3. The directions of increasing the efficiency of grinding mineral raw materials in a vertical centrifugal mill are determined by reducing the number of radial ribs installed in the cavity of the mill rotor; making cutouts in the radial ribs of the rotor, in the area near the rotor hub; installing coaxial rings in the working space of the mill above the rotor. 4. A method of effective evacuation of the crushed product from the mill body by installing additional screening surfaces in the peripheral part of the working space of the mill has been developed. 5. For the first time, the distribution of the granulometric composition of fine and medium - dispersed crushed product obtained as a result of processing lump dolomite in a centrifugal mill was obtained. It was found that particles with a size class of -0.08 + 0.03 mm are absent in the output of the crushed product from the mill. Conclusions. A mass-produced vertical centrifugal mill will find its effective application at enterprises of the Russian Federation for the preparation of powdered materials and will allow to obtain a significant effect by reducing the price of the final product, simplicity of design and maintenance of equipment, as well as small occupied production areas.

scholarly journals INNOVATIVE PROCESSES OF DEEP AND ENVIRONMENTALLY SAFE PROCESSING OF TECHNOGENIC RAW MATERIALS IN THE CONDITIONS OF NEW ECONOMIC CHALLENGES

2021 ◽  
Vol 13 (2) ◽  
pp. 224-237
Author(s):  
Valentin CHANTURIA ◽  
◽  
Irina SHADRUNOVA ◽  
Olga GORLOVA ◽  
◽  
...  
Keyword(s):  
Raw Materials ◽  
Mining Industry ◽  
Mineral Resources ◽  
Secondary Products ◽  
Resource Saving ◽  
Mineral Raw Materials ◽  
The Face ◽  
Environmentally Safe ◽  
Copper Zinc ◽  
Technogenic Raw Materials

Innovative processes of deep and complex processing of technogenic raw materials in the context of sustainable development of the mining industry and the economic challenges facing the mining industry should ensure the transition to a circular economy and the maximum use of natural resources. The article reflects the priority scientific and technological research on the involvement of technogenic mineral resources in efficient processing. Presented, developed at ICEMR RAS, including jointly with universities, research and production organizations and enterprises, modern innovative processes of deep and environmentally friendly processing of refractory mineral raw materials of complex material composition (tailings of enrichment of non-ferrous and noble metal ores, poor off-balance ores, slags ferrous and nonferrous metallurgy, sludge of metallurgical production) and hydro-mineral technogenic resources (acidic mineralized bottom-dump waters of mining enterprises of the copper-zinc complex of the Urals, saponite-containing circulating waters of diamond processing factories). Among other things, new directions in the field of selective disintegration of finely dispersed mineral raw materials based on energy effects and deep processing of slags are outlined; increasing the selectivity of enrichment processes; combined processing of technogenic raw materials; resource-saving processing of technogenic and hydro-mineral resources, obtaining secondary products from processing waste. It is shown that in the face of new economic challenges, Russia has sufficient scientific and technological potential in the field of deep and environmentally safe processing of technogenic raw materials in the form of developed and, to varying degrees, tested innovative resource-saving technologies that correspond to the world level, and in a number of technologies are superior to it.

Economic aspects of subsurface use in northern regions of resource type

2021 ◽  
pp. 11-19
Author(s):  
В.В. НИКИФОРОВА
Keyword(s):  
Social Development ◽  
Raw Materials ◽  
Mining Industry ◽  
Special Role ◽  
Economic Aspects ◽  
Extractive Industry ◽  
Mineral Raw Materials ◽  
Northern Regions ◽  
Resource Type ◽  
High Level

В настоящее время в экономическом развитии не только отдельных регионов, но и всей страны особую роль играет состояние добывающей промышленности, в основном топливно-энергетических ресурсов и цветных металлов. В Российской Федерации доходы, получаемые за счет добычи и экспорта минерального сырья, в стоимостном выражении составляют около 80% российского экспорта. В статье рассматриваются экономические аспекты недропользования в северных регионах ресурсного типа, специализирующихся на добыче высоколиквидных минеральных ресурсов: нефти, газа, угля, алмазов и золота с целью выявления сильных и слабых сторон. Анализируются минерально-сырьевой и производственный потенциалы добывающей промышленности регионов. Методом математической статистики оценивается уровень зависимости социального развития регионов от добывающей промышленности по шкале Чеддока. На основе факторного анализа и оценки экономических составляющих недропользования и региональной статистики за 2010-2020 гг. выявлены высокий уровень ресурсной ориентированности экономики, капиталоемкости и фондоемкости добывающей промышленности и моноспециализация экономики во всех северных регионах ресурсного типа, высокий уровень зависимости социального развития от добывающей промышленности в Республике Саха (Якутия), Ханты-Мансийском – Югра и Ямало-Ненецком автономном округах. Выделены негативные и позитивные факторы устойчивого развития добывающей промышленности, также определены ключевые моменты перспективного развития экономики северных регионов ресурсного типа. At present, the state of the mining industry, mainly fuel and energy resources and non-ferrous metals, plays a special role in the economic development of not only individual regions, but also the whole country. In the Russian Federation, revenues derived from the extraction and export of mineral raw materials in value terms account for about 80% of Russian exports. The article discusses the economic aspects of subsurface use in the northern resource-type regions specializing in the extraction of highly liquid mineral resources: oil, gas, coal, diamonds and gold in order to identify strengths and weaknesses. The mineral raw materials and production potentials of the mining industry of the regions are analyzed. The method of mathematical statistics evaluates the level of dependence of the social development of regions on the extractive industry on the Cheddock scale. Based on a factor analysis and assessment of the economic components of subsurface use and regional statistics for 2010-2020, there was revealed a high level of resource orientation of the economy; capital intensity of the mining industry and monospecialization of the economy in all northern resource-type regions; a high level of dependence of social development on the extractive industry in the Sakha Republic (Yakutia), Khanty-Mansiysk-Yugra and Yamalo-Nenets Autonomous Okrugs. The negative and positive factors of the sustainable development of the mining industry are highlighted, and the key points of the prospective development of the economy of the northern regions of the resource type are also identified.

scholarly journals Research into special technological effects for formation of wear resistant coatings using mineral raw materials of the far eastern region

2018 ◽  
Vol 56 ◽  
pp. 03027
Author(s):  
Viktor Makienko ◽  
Igor Romanov ◽  
Pavel Sokolov ◽  
Alexander Atenyaev ◽  
Dmitry Pervakov
Keyword(s):  
Mechanical Properties ◽  
Raw Materials ◽  
Experimental Studies ◽  
Eastern Region ◽  
Mineral Raw Materials ◽  
Wear Resistant Coatings ◽  
Thermal Fields ◽  
Additional Influence ◽  
Far Eastern

The results of the study of the possibility of using additional technological influence in the formation of doped coatings are presented. The distribution of thermal fields has been calculated, which makes it possible to estimate and predict the influence of additional influence on the formation of the coating in a simplified manner. Experimental studies have shown that additional technological influence promotes mixing of the melt, leading to an increase in the transition of alloying elements, as well as an increase in the mechanical properties and quality of the weld metal.

Reduction of alkali content in nepheline sludge for the production of heat-resistant insulating materials from it

2019 ◽  
pp. 55-57
Author(s):  
D. F. Nurgaliev ◽  
V. M. Sizyakov ◽  
V. A. Utkov
Keyword(s):  
Alkali Metal ◽  
Raw Materials ◽  
Experimental Studies ◽  
Vacuum Filter ◽  
Alkali Content ◽  
Initial Amount ◽  
Insulating Materials ◽  
Mineral Raw Materials ◽  
Water Suspension ◽  
Mechanical Stirring

The results of studies of the reduction of alkali metal oxides in nepheline sludge are presented. The alkali-containing phase is sodium hydroaluminosilicate. The methodology of the experimental studies involved the preparation of a water suspension with a given ratio W:T, mechanical stirring, heating, aging and separation of the pulp on a vacuum filter. A technology has been developed to reduce the alkali content by 21% of the initial amount of alkali, which has increased the melting temperature by 310 ° C. The obtained results are the basis for the design of a pilot plant and the development of refractory heat-insulating materials with the replacement of expensive mineral raw materials with non-deficient man-made waste. Ill. 2. Ref. 22. Tab. 1.

scholarly journals Increasing the attractiveness of investment projects in the mining industry of the Russian Far East

2020 ◽  
Vol 192 ◽  
pp. 03002
Author(s):  
Yuliya Arkhipova ◽  
Rudolf Leontiev
Keyword(s):  
Raw Materials ◽  
Russian Far East ◽  
Far East ◽  
Mining Industry ◽  
Mineral Resources ◽  
Cost Effective ◽  
Federal District ◽  
Investment Projects ◽  
Processing Plants ◽  
The Impact

The article is devoted to the issue of the possibility of economic development of the mining industry in the subjects of the Far Eastern Federal District (FEFD) and the impact of investment projects. With the vast wealth and diversity of mineral resources, their involvement in the national economy is an essential factor in the industrialization and successful development of the regions. In the case of the establishment of processing plants, for a number of minerals, the region could provide its own needs, as well as the countries, finished products from it, and develop an export focus. The article considers the export orientation of the mineral and raw materials complex of Russia and the constituent entities of the Russian Federation, as well as the commodity structure of exports of the regions of the FEFD. Special attention is paid to the implementation of major regional investment projects, which are important for the development of the regions. So, it is proposed to implement a major project in the form of an integrated mining and metallurgical complex due to the fact that the region needs its own ferrous metallurgy. The calculations carried out (in various versions: basic, in the conditions of the territory of advanced development (TAD), without the costs of infrastructure creation) showed that the implementation of the project is cost-effective, but due to the high costs, the support of the state is necessary.

Development of Zoning Method for Man-Made Massifs

2021 ◽  
pp. 116-122
Author(s):  
I.A. Melnichenko ◽  
Yu.V. Kirichenko
Keyword(s):  
Raw Materials ◽  
Mining Industry ◽  
Environmental Safety ◽  
Economic Feasibility ◽  
Mineral Raw Materials ◽  
Mine Dumps ◽  
Useful Components ◽  
Processing Plants ◽  
The Republic ◽  
Overburden Dumps

Contemporary mining industry is a complex system that is constantly expanding both in terms of explored sources of mineral raw materials and in terms of developing new approaches to mining and processing of minerals. Such a buildup in the scope of tasks set for the industry, as well as the technical progress, lead to various issues related to the quality, quantity and rational use of mineral raw materials. Rationalization, in its turn, should be carried out in a phased manner through the use of comprehensive measures, one of which is reclamation of man-made wastes, represented by waste rocks, tailings, slags, dust, etc. In addition, this approach simultaneously resolves several other important challenges the industry is facing, e.g. increasing the environmental safety of mining regions and increasing the economic feasibility of production by extracting additional components from waste materials. The scope of application of such a solution to the challenge of rationalizing production is immense and can be implemented at many deposits located in the territory of the CIS due to the presence of huge volumes of waste generated by mining raw materials. These wastes were accumulated because of the absence of full-fledged technologies to extract useful components from the rock mass in the past as well as other requirements to ore conditioning than those acting today. For example, in the Republic of Bashkortostan, the overburden dumps and off-balance ores that have been created by mining enterprises amount to more than 1 billion tons, hydraulic-mine dumps of processing plants reach 50 million tons, manmade waters exceed 9 million m3 annually. At the same time, the amount of useful components contained in these man-made deposits can be up to 1.5 million tons for copper, 2 million tons for zinc, about 100 tons of gold as well as significant amounts of other associated components, including various non-metallic formations.

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