scholarly journals Studying the effect the physicochemical properties of fine size raw coal organic and mineral composition have on beneficiation efficiency

2021 ◽  
Vol 6 ◽  
pp. 65-75
Author(s):  
Ekaterina S. Kamoza ◽  
Keyword(s):  
Mineral Composition ◽  
Structural Features ◽  
Raw Material ◽  
Petrographic Analysis ◽  
Material Base ◽  
Technical Parameters ◽  
Fine Coal ◽  
Thermal Coal ◽  
Three Samples

Introduction. This work presents the results of the research on the effect the petrographic characteristics, elemental and mineral composition have on the Kedrovsko-Krohalevskoe fine coal beneficiation efficiency. The data has been analyzed of raw coal physochemical properties at the stage of mining and dressing mill raw material base formation. Research objective is to study thermal coal by physicochemical methods of analysis to identify the main parameters affecting the quality of beneficiation products. Based on the data obtained, the research aims to develop the method of assessing the indicators affecting the beneficiation process and further forecasting during the development of new areas and coal seams. Methods of research. The structural features of raw KCN (coking low-caking low-metamorphosed) coal were determined by comparative analysis of three samples according to the following parameters: laboratory flotation results, general technical parameters, maceral composition, organic matter elemental composition, and ash mineral composition. Results. It has been established that coals of a similar nature of origin and stage of metamorphism, can have different indicators in vaarious parameters: particle size, number and morphology of microcomponents according to quantitative petrographic analysis, as well as the presence of hydrophilic functional groups on the surface of coals. Conclusions. The results of the studies made it possible to identify a number of dependencies that can be used in a preliminary assessment of the quality of raw coal sent to a coal processing enterprise.

scholarly journals Construction sands of Podillya: patterns of distribution, resources and use

2019 ◽  
Vol 27 (3) ◽  
pp. 510-519
Author(s):  
M. Syvyj ◽  
B. Gavrychok
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Simultaneous Increase ◽  
Clay Material ◽  
Material Base ◽  
Resource Base ◽  
Apparent Correlation ◽  
The Baltic ◽  
Further Development

This article presents the characteristics of the resource base of building sands within the three Podillya regions, the patterns of sands distribution, and proposals for increasing the extraction of raw materials . The construction sands of Podillya are confined to the Upper Cretaceous, Neogene and Anthropogenicdeposits. The decrease of the thickness of the sandy strata of the Opilsk Neogene suite in the eastern direction was observed with the simultaneous increase in the thickness of the overlapping strata of the rocks. There is no apparent correlation between the thickness of sandy interlayers and the quality of sands. The interdependence of the chemical composition of Neogene sands and the sand size module is established.The genetic predisposition for the distribution of building sands in different parts of the Podillya territory has been established. Four groups of sand deposits of different age have been identified within the Podillya regions, which contrast sharply with single deposits in the neighbouring territories.There is a very uneven distribution of explored reserves of sandy raw materials across the region and accordingly in the provision of construction sands in the different oblasts /regions of Podillya. The areas best provided with sandy raw materials are the central districts of Ternopil region and Slavutsky district of Khmelnytsky region . Sands of the Baltic stage distributed in Vinnytsia region are mostly poor in quality, clogged with clay material and require enrichment. The further development of the mineral raw material base and the prospects for increasing the production of construction sand in the Podillya regions is associated with the increase in production at the prepared deposits, the commissioning of reserve deposits, the conducting of prospecting and exploration work in the proposed potentially exploitable areas and additional exploration of individual deposits that are exploited. The research allows us to evaluate objectively the existing base of sand raw materials for various purposes in the Podillya region and to develop on this basis measures to increase it. The importance of the study is determined by the acute shortage of the raw material in most administrative districts of Khmelnytsky and Vinnytsia regions, by the growth in the volume of construction work (and accordingly the requirements for sandy raw materials) both in Podillya and in the country.

Detailed Approach to Planning Transfers from One Production Facility to Another

2018 ◽  
Vol 785 ◽  
pp. 101-106
Author(s):  
Vadim Aleksandrov ◽  
Marsel Kadyrov ◽  
Andrey Ponomarev ◽  
Denis Drugov ◽  
Irina Bulgakova
Keyword(s):  
Development Stage ◽  
Raw Material ◽  
Modern State ◽  
Material Base ◽  
Present Stage ◽  
Complete Coverage ◽  
Depletion Rate ◽  
Analysis Of Results ◽  
Recoverable Resources

The modern state of the raw material base of the “Kogalymneftegaz” TMC is characterized by deterioration in the structure and quality of the field reservoirs at the latter development stage. The depletion of the main developed oil formations has long exceeded 60%. Despite the high depletion rate, the complete coverage of all recoverable resources by flooding has not been achieved. The differences in zone and area irregularities of the production facilities and the imperfection of the existing development systems at the present stage lead to the formation of non-drainable resources. In order to involve them into production in formations, various types of interventions are carried out in order to improve the existing development systems. The research objective is to develop a detailed approach to planning a transfer of wells which have completed their purpose from one development facility to another. Using a detailed geological and routine analysis of results of carrying out various interventions on the formation, an active application of the most effective of these has been proposed.

scholarly journals Regional Features of the Development of the Flax Sub-complex in the Context of Growing Crisis Phenomena

2020 ◽  
Author(s):  
И.В. Великанова ◽  
Р.А. Попов
Keyword(s):  
Linum Usitatissimum ◽  
Production Efficiency ◽  
Import Substitution ◽  
Raw Material ◽  
Main Task ◽  
Material Base ◽  
Fibre Flax ◽  
Regular Production ◽  
Wide Range

Целью настоящей работы является оценка состояния льноводства в Российской Федерации в целом и в отдельных льносеющих регионах, выявление текущих проблем в отрасли, изучение программ государственной поддержки льняного комплекса и определение возможностей для его развития. В процессе исследования использовался широкий спектр аналитических методов изучения экономических явлений – монографический, статистический и другие. Особое внимание уделялось сопоставимости показателей для анализа динамики изучаемых процессов. Для России лён-долгунец – важнейшая техническая культура, максимально адаптированная к её почвенно-климатическим условиям, позволяющая в значительной мере обеспечить импортозамещение хлопка. Основная задача, стоящая перед льняной отраслью сегодня – создание надёжной отечественной сырьевой базы для льноперерабатывающих предприятий. От её решения зависит экономическая и стратегическая безопасность страны, которая определяется необходимостью наличия отлаженного производства отечественного волокнистого сырья и продуктов его переработки гражданского и оборонного назначения. Исследования показали, что реализуемые меры по поддержке отрасли на федеральном и региональном уровнях положительно влияют на её состояние, но пока не могут обеспечить высокую эффективность производства. Валовые сборы льноволокна не растут и стабилизировались на уровне 40 тыс. тонн, а площади посева льна-долгунца не достигают и 50 тыс. гектаров. Низким остаётся и качество льнопродукции. В условиях высокой затратности производства льнопродукции, диспаритета цен, недостаточного уровня инвестиций рентабельность производства льнопродукции довольно низка. Важными и актуальными задачами в развитии льняной отрасли являются увеличение объёмов и эффективности производства льна, повышение качества волокнистой и семенной продукции, техническая и технологическая модернизация льноводства. Поэтому, наряду с действующими программами (льготное кредитование, лизинг техники, субсидирование затрат), необходима разработка целевой комплексной программы «Развитие льняного подкомплекса региона», охватывающей не только сельскохозяйственных товаропроизводителей, но и предприятия перерабатывающей и лёгкой промышленности. The purpose of this work is to assess the state of flax cultivation in the Russian Federation as a whole and in certain flax-sowing regions, to identify current problems in the industry, to study state support programs for the flax complex and to determine opportunities for its development. A wide range of analytical methods for studying economic phenomena – monographic, statistical and others was used in the research process. Particular attention was paid to the comparability of indicators for the analysis of the dynamics of the studied processes. For Russia, the fibre flax (Linum usitatissimum) is the most important industrial crop adapted to its soil and climatic conditions as much as possible, which allows to significantly ensuring the import substitution of cotton. The main task facing the flax industry today is to create a reliable domestic raw material base for flax processing enterprises. The economic and strategic security of the country depends on its decision which is determined by the need for regular production of domestic fibrous raw materials and its derived products for civil and defense purposes. Researches have shown that the measures implemented to support the industry at the federal and regional levels positively affect its condition, but so far cannot ensure high production efficiency. Whole yields of flax fiber do not increase and have stabilized at the level of 40 thousand tons and the area of planting fibre flax (Linum usitatissimum) does not reach 50 thousand hectares. The quality of flax products remains low. In conditions of high cost of flax production, price disparity, insufficient level of investments, the profitability of flax production is rather low. Important and relevant tasks in the development of the flax industry are increasing the volume and efficiency of flax production, improving the quality of fibrous and seed products and technical and technological modernization of flax cultivation. Therefore, along with existing programs (easy credit terms, finance lease of equipment, subsidizing of costs) it is necessary to develop a targeted integral program "Development of the flax sub-complex of the region", covering not only agricultural commodity producers but also enterprises of the processing and light industries.

scholarly journals Replacement of traditional components of the backfill mixture with man-made waste

2021 ◽  
Vol 942 (1) ◽  
pp. 012005
Author(s):  
A Khayrutdinov ◽  
I Paleev ◽  
S Artemov
Keyword(s):  
Water Soluble ◽  
Raw Material ◽  
Material Base ◽  
Mining Areas ◽  
Global Environmental ◽  
Technological Chain ◽  
Cement Binder ◽  
Separate Activation ◽  
The Impact

Abstract The formation and storage of man-made waste of water-soluble ores creates a global environmental problem that entails changing landscapes in mining areas and environmental degradation. The involvement of man-made waste in a closed cycle of the production and technological chain makes it possible to reduce the impact of mining and processing on the environment. The use of non-waste (low-waste) technologies, in addition to reducing the environmental burden, allows you to expand the raw material base of the enterprise by replacing the traditional components of the backfill mixture with man-made waste from mining and processing enterprises. The possibility of replacing the traditional, specially extracted aggregate in the backfill mixture with industrial waste of water-soluble ores is experimentally proved. The possibility of creating a cementless backfill mixture is proved. The possibility of replacing the cement binder with magnesium-containing slags of the Chusovsky Metallurgical Plant was confirmed. It was found that the separate activation treatment of the components of the backfill mixture has a positive effect on its rheological properties and increases the strength of the joint mass. The use of lignosulfonate improves the quality of the mixture and the resulting mass. The development of a backfill composite from man-made waste makes it possible to implement the principle of organizing mining production, which provides for the use of intermediate products in cyclic production and excludes the formation of man-made waste of water-soluble ores.

QUALITY ASSURANCE IN THE MANUFACTURE OF REINFORCED CONCRETE MUSHROOMS

2020 ◽  
Author(s):  
E.A. Shlyakhova ◽  
◽  
M.A. Odinets
Keyword(s):  
Quality Assurance ◽  
Reinforced Concrete ◽  
Front Surface ◽  
Raw Material ◽  
Material Base ◽  
Cast Concrete ◽  
Theoretical Foundations

The article deals with the production of reinforced concrete mushrooms. The theoretical foundations of the issue under consideration are given. The possibility of improving the quality of cast concrete for the manufacture of reinforced concrete molds with the category of the front surface of class A1, using materials based on the local raw material base, is justified.

scholarly journals Production and quality of blast furnace coke in Ukraine

2007 ◽  
Vol 1 (2) ◽  
pp. 91-96
Author(s):  
Yevgen Kovalov ◽  
Keyword(s):  
Coke Quality ◽  
Coke Production ◽  
Raw Material ◽  
Metallurgical Coke ◽  
Material Base ◽  
Preparation Methods ◽  
Blast Furnace Coke ◽  
Coal Charge ◽  
Furnace Coke

This research displays the state of metallurgical coke production in Ukrainew with special attention to the raw material base for production of coke and its quality. Besides the following essay deals with the detailed analysis of preparation methods of coal charge for coking, including thermal treatment and stamp charging and formulates the main ways of upgrading coke quality considering the rational technology of coking.

scholarly journals Kinetics of drying and quality of the apple cultivars Granny Smith, Idared and Jonagold

2010 ◽  
Vol 55 (3) ◽  
pp. 261-272 ◽  
Author(s):  
Dragana Paunovic ◽  
Branislav Zlatkovic ◽  
Dusica Mirkovic
Keyword(s):  
Technological Process ◽  
Air Temperature ◽  
World Market ◽  
Polyphenolic Compounds ◽  
Raw Material ◽  
Maximum Speed ◽  
Three Samples ◽  
Apple Slices ◽  
Kinetics Of

Apple is nutritionally valuable and present as fresh fruit in human nutrition throughout the year. Also apple is a raw material in food processing, primarily in the production of juices, nectars, refreshing soft drinks, marmalades, jams, compotes, apple cider vinegar and dried fruits. In the last decade on the world market there is a great interest in dried apple products (commercially called apple chips). During preservation by drying the technological process aimed at the final product of optimal quality is required. The subject of this paper is the kinetics of the apple cv. Granny Smith, cv. Idared and cv. Jonagold drying in laboratory dehydrator for the purpose of pinpointing at which level of humidity the maximum speed of evaporation is achieved and at which level of humidity apple slices begin to change in colour and geometric shape. Parameters of the drying process were the same for all three cultivars, 3hrs at air temperature of 70oC and 5hrs at air temperature of 50o. The amount of evaporated water is expressed in relative and absolute units of measure. The purpose of this paper is to determine which one of the three tested cultivars provides the best properties for drying, i.e. in terms of oxidation of polyphenolic compounds to find the cultivar which will provide that the final product is technologically and organoleptically the most acceptable. The results showed that the sample cv. Granny Smith expressed the least oxidation of polyphenolic compounds (browning), curved edges and shrivelled apple slices. After that the sample cv. Jonagold followed. The sample cv. Idared showed the worst results. Following the drying kinetics of all three samples, it can be concluded that the cultivars Granny Smith and Jonagold were achieving the lower maximum speed of evaporation, unlike the cultivar Idared. The cultivars Granny Smith and Jonagold have attained consistent drying and in this way the technological process was finished with a smaller temperature stress for plant tissue, resulting in a much better quality of the final product.

scholarly journals The role of digital simulation in assessing and reassessing the potential of complex coal deposits

2020 ◽  
Vol 192 ◽  
pp. 03014
Author(s):  
Vladimir Gavrilov ◽  
Evgenii Khoiutanov ◽  
Natal’ya Nemova ◽  
Dmitrij Son
Keyword(s):  
Rock Mass ◽  
Mineral Content ◽  
Digital Simulation ◽  
Raw Material ◽  
Material Base ◽  
Coal Deposits ◽  
Selective Mining ◽  
External Conditions

The article addresses the increasing complexity of mined or prospective coal deposits. The paper analyses the role of digital simulation in operation assessment and reassessment of the potential of complex in structure coal deposits for more accurate understanding their investment attractiveness, reliability of knowledge on quantity and quality of the reserves. The article stresses the objective need to take into account the realities of the VUKA-world, when companies have to react rapidly to changing of external conditions by adapting organizational and technological measures as much as possible to the constantly overestimated potential of the raw material base. It is of note that reserves should be assessed in accordance with international requirements in the light of the increasing number of parameters for management. The complexity of the structure, the geomechanical heterogeneity of the rock mass, the mineral content of the impurities in the coal, its caking capacity, oxidation and enrichment are taken into account in the estimation. The paper presents the measures to increase the level of utilization of geological potential through the application of selective mining and the control of different quality coal streams in preparation for enrichment and during primary processing.

scholarly journals Analysis of the investments influence in environmental protection measures on the structure of ecological costs distribution on the example of the Republic of Sakha (Yakutia)

2021 ◽  
pp. 141-146
Author(s):  
O. A. Bykanova
Keyword(s):  
Water Resources ◽  
Natural Resources ◽  
Environmental Protection ◽  
Raw Material ◽  
Material Base ◽  
Social Infrastructure ◽  
Protection Measures ◽  
Correlation And Regression Analysis ◽  
The Republic

Modern investment processes can be considered the main factor in the development of individual constituent entities of the Russian Federation. The emergence of additional jobs, the improvement of social infrastructure contribute to the growth of the quality of life of the population. However, the active use of natural resources as a raw material base for industry and agriculture has consequences: the depletion of resources and the violation of their structure and quality. Environmental protection measures are an important component of the development of regions. The article сonsiders investments aimed at protecting land and water resources in the Republic of Sakha (Yakutia). The study of the statistics of costs for the conservation and restoration of water and land using the Gatev integral index allowed us to conclude about significant changes in current costs structure. Based on the correlation and regression analysis, the ratio between the Gatev index of structural differences in costs and the share of investments in the rehabilitation of soil and water resources with a correlation of 0.85 has been obtained. It has been concluded that a decrease in the level of attracted investments entails, in aggregate, a significant redistribution of funds for measures aimed at improving the natural resources of agricultural purposes.

Modeling the Production Processes of Wood-Fiber Semi-Finished Products Aimed at Expansion of the Raw Material Base of Forest Enterprises

2020 ◽  
pp. 176-183
Author(s):  
M.A. Zyryanov ◽  
◽  
S.O. Medvedev
Keyword(s):  
Wood Fiber ◽  
Acetic Acid Solution ◽  
Wood Pulp ◽  
Wood Chips ◽  
Raw Material ◽  
Hydrodynamic Resistance ◽  
Aqueous Environment ◽  
Grinding Process ◽  
Material Base

Currently, materials made of wood-fiber semi-finished products are widely used in house building as structural, finishing and insulating materials. According to the results analysis of numerous studies, the raw material for their production is technological chips of woodworking waste. While production, the chips are subjected to hydrothermal treatment and further grinding in disk knife grinding machines in two stages. Significant energy consumption of the wood fiber production process is driven not only by grinding wood chips in stages, but also by overcoming the hydrodynamic resistance of the aqueous environment, where grinding is carried out. The process of grinding wood chips, made of from chopping residues, in an aerodynamic medium on an upgraded cross-bar mill was studied in order to solve the problem of expanding the raw material base for the production of a wood fiber semifinished product and reducing the energy intensity of the grinding process. The features of this process were analyzed and its effectiveness was assessed. The influence of the exposure time of wood chips of chopping residues in an acetic acid solution, the size of the working gap and the angle of inclination of the front edge of the knife on the grinding degree and fractional quality of wood pulp grinding was determined. Statistical and mathematical equations, that describe the studied process, were obtained, and the graphical dependencies are constructed. The following basic requirement is fulfilled for the dependencies: the experimental points for a total should lie quite close to the curve. These equations allow predicting the quality of wood pulp depending on the set modes of the grinding process; as well as determining the quality indicators of wood pulp with known values of the technological and structural parameters of the grinding machine. The efficiency of the process of obtaining the wood-fiber semi-finished product in an aerodynamic environment from wood chips produced as a result of chopping residues (branches, twigs, etc.) processing in a mobile wood chipper, is proven.

Sign in / Sign up

Export Citation Format

Share Document