Studying the Effect of some Factors on the Stress-Strain Behavior of the Rostov Region Limestones in the Course of their Production and Use

2021 ◽  
Vol 1022 ◽  
pp. 80-86
Author(s):  
Mikhail G. Kholodnyak ◽  
Sergey A. Stelmakh ◽  
Evgeniy M. Shcherban ◽  
Mukhuma P. Nazhuev
Keyword(s):  
Construction Material ◽  
Experimental Studies ◽  
Raw Material ◽  
Material Base ◽  
Strain Behavior ◽  
Current State ◽  
Rostov Region ◽  
Literary Sources ◽  
Crushed Granite ◽  
Strain Stress

The paper considers the current state of the mineral raw material base and the construction material market of the Rostov Region. The effect of various factors on the strain-stress behavior of local limestones has been investigated. The scientific and technical literary sources devoted to the processes of rock failure under various loads have been analyzed. The experimental studies have shown that the tested samples of limestone with a high content of cuboidal grains have characteristics comparable to those of the crushed granite stone. It has been concluded that the use of the Rostov Region limestones in the construction industry is competitive and feasible, provided the proper implementation of the engineering measures proposed in their production.

scholarly journals Prospective directions for development of metallurgy and materials science of steel

2017 ◽  
Vol 89 (10) ◽  
pp. 1553-1565 ◽  
Author(s):  
Alexander I. Zaitsev
Keyword(s):  
Materials Science ◽  
Raw Material ◽  
Material Base ◽  
Efficient Technology ◽  
Chemical Methods ◽  
Current State ◽  
Physico Chemical ◽  
Metallic Inclusions ◽  
Reducing Costs ◽  
Qualitative Characteristics

AbstractThe features of current state of metallurgical technology and materials science of mass high-grade steels are viewed. A promising direction for principle improvement of the complex of properties and qualitative characteristics of steel including those, which are difficult to combine, is shown. It is the development of adequate physico-chemical methods of prediction and efficient technology methods of management of non-metallic inclusions, forms of presence of impurities, phases precipitations, structural state, including uniformity over the volume of metal. Additionally this approach allows reducing costs and expanding the raw material base. Its effectiveness is illustrated by the results of research carried out for a number of groups of mass high-quality steels.

Transport security of the oil and gas complex of the regions of East Siberia

2020 ◽  
Author(s):  
Ekaterina A. Zemnukhova ◽  
◽  
Mikhail V. Mishenin ◽  
Keyword(s):  
Oil And Gas ◽  
Comprehensive Analysis ◽  
The State ◽  
Raw Material ◽  
Material Base ◽  
Eastern Siberia ◽  
East Siberia ◽  
Current State ◽  
Low Degree ◽  
The Republic

The article considers a comprehensive analysis of the oil and gas complex of the regions of Eastern Siberia and the Republic of Sakha (Yakutia). The features of the structure of the raw material base were revealed – a low degree of exploration and the rate of reproduction of stocks, imbalance in categories of stocks. The state of oil production in the region with differentiation by field is presented, the current state and prospects of expansion of the ESPO pipeline are analyzed.

scholarly journals Functioning of food enterprises in the context of export development policies implementation

2020 ◽  
Vol 11 (31) ◽  
pp. 119-130
Author(s):  
Marat Mirsayafovich Galeev ◽  
Alexander Sergeevich Baleevskikh
Keyword(s):  
Policy Implementation ◽  
Food Industry ◽  
Import Substitution ◽  
Raw Material ◽  
Material Base ◽  
Export Activity ◽  
Current State ◽  
Development Policies ◽  
Regional Development Policies ◽  
Egg Products

The article describes the development trends of the modern poultry product subcomplex as a raw material base for food industry and state export activity. Import substitution and increasing export volumes are a priority for the federal and regional development policies of Russia. In this regard, the aim of the study was to analyze the current state of food industry in the context of policy implementation of import substitution and export development. The achievement of the set goal was disclosed by solving several interrelated tasks: 1) analysis of resources of food products (eggs and egg products) and their use; 2) identification of a hidden correlation between indicators “production” and “import”; 3) identification of a hidden correlation between indicators “production” and “export”. We hypothesized that indicators “production” and “export” of agri-food are directly correlated. Studies to identify hidden correlation dependencies have shown that there is a direct correlation between indicators “production” and “import”. Indicators “production” and “export” don’t have dependencies and influence on each other, therefore an increase in production doesn’t affect the direct export of eggs from the country.

scholarly journals Calculation of the Optimum Cone Angle of a Confuser Used for Reversive-Jet Cleaning of Metal Surfaces against Corrosion

2019 ◽  
Vol 18 (3) ◽  
pp. 216-222
Author(s):  
I. V. Kachanov ◽  
A. N. Zhuk ◽  
I. M. Shatalov ◽  
V. V. Veremenyuk ◽  
A. V. Filipchik
Keyword(s):  
Metal Surfaces ◽  
Production Efficiency ◽  
Cone Angle ◽  
Experimental Studies ◽  
Raw Material ◽  
Flame Spraying ◽  
Working Fluid ◽  
Material Base ◽  
River Sand ◽  
Jet Impact

The modern industrial production of the Republic of Belarus is characterized by the absence of its own raw material base and significant dependence on imported energy carriers and material resources supplied at world prices. When working in such conditions, production efficiency can be achieved through all-round economy and creation of modern energyand resource-saving technologies. However implementation of such technologies, for example, laser cutting and welding, cladding, flame spraying, painting, etc. directly depends on quality of cleaning metal surfaces from corrosion. Theoretical and experimental studies conducted at the Department of Shipbuilding and Hydraulics of the Belarusian National Technical University have shown that it is very economical to remove corrosion products from metal surfaces using new technology of reverse jet cleaning. The reverse jet cleaning technology is based on a physical principle which presupposes that a jet of working fluid (pulp based on river sand or bentonite clay) rotates 180º when it hits the surface to be cleaned and it leads to an increase in jet impact on the surface to be cleaned by 1.5–2 times due to occurrence of a reactive component. In order to ensure a marked jet reversal an original case design has been developed which is characterized by a patent novelty. One of the main elements in this design is a confuser-shaped stream-forming device. Theoretical investigations on pressure losses of working fluid in a confuser channel which are based on the study of functional at the extremum have made it possible to obtain a dependence for calculation of an optimal cone angle at a turbulent mode of motion within the range of Reynolds numbers 4000 < Re < 3 ×106 while taking into account an influence of working fluid density, its dynamic or kinematic viscosity, average velocity movement of working fluid, confuser radii.

scholarly journals Food and Feed Protein Preparations from Peas and Chickpeas: Production, Properties, Application

2021 ◽  
Vol 51 (2) ◽  
pp. 333-348
Author(s):  
Valentina Kolpakova ◽  
Denis Kulikov ◽  
Rusalia Ulanova ◽  
Ludmila Chumikina
Keyword(s):  
Raw Material ◽  
Animal Origin ◽  
Material Base ◽  
Biological Value ◽  
Protein Formulations ◽  
Literary Sources ◽  
Food And Feed ◽  
Physicochemical Methods ◽  
Leguminous Crops ◽  
Feed Protein

Introduction. New legume-based protein preparations are an excellent alternative to polymers of animal origin and can eliminate the protein deficiency in the diet of humans and animals. In this respect, the raw material base of common leguminous crops has to be thoroughly analyzed in order to develop new technological schemes for novel protein formulations. Study objects and methods. The present research compared modern trends in the production, properties, and safety of food and feed protein preparations based on peas and chickpeas. It involved such standard methods as data systematization and analysis of literary sources. Results and discussion. The leguminous agriculture in Russia is stable enough to produce food and feed protein preparations from peas and chickpeas with the maximum preservation of biological value, composition, and properties. Peas and chickpeas have a high biological value and are rich in polypeptides, fiber, minerals, vitamins, antioxidants, etc., which are lost during processing. By-products of protein production can be processed using biosynthetic transformation with various types of fungal and/or bacterial enzymes, as well as physical and/or physicochemical methods, to obtain feed or food products with an appropriate yield. A synthesis with enzymes or microorganisms can result in functional foods and feeds fortified with minerals, vitamins, fatty acids, and antioxidants.

scholarly journals Application of grout slurries with the defecate addition for effective well cementing

2021 ◽  
Vol 15 (1) ◽  
pp. 59-65
Author(s):  
Maryna Petruniak ◽  
Victoriia Rubel ◽  
Vira Chevhanova ◽  
Svitlana Kulakova
Keyword(s):  
Economic Efficiency ◽  
Oil And Gas ◽  
Experimental Studies ◽  
Raw Material ◽  
Strength Development ◽  
Material Base ◽  
Rheological Characteristics ◽  
Cement Slurry ◽  
Additive Content ◽  
Cement Mixture

Purpose. Research and substantiating the expediency of cement mix formulations of grout slurries with different Defecate additive content and their effective use when cementing the reservoirs prone to absorption of the cement slurry, as well as to prevent behind-the-casing flows and for cementing operations in the zone of abnormal pressures (hydraulic seam fracturing). Methods. Analytical and experimental studies of the physical-chemical grout slurry properties are used: determining the influence of the Defecate additive content on the cement mixture technological properties; study of a change in the grout slurry rheological characteristics at various temperature conditions; testing the formulation of grout slurry with different rates of strength development; substantiating the economic efficiency of using the grout mixtures with the Defecate additive. Findings. It has been revealed that the cement mixture fluidity increases by 10-20% with the addition of a Defecate in the proportion of 5-20%. With a further increase in the Defecate content, the stone strength deteriorates, and with a decrease, the grout slurry concentration increases. It has been found that when Defecate is added to the cement mixture in a proportion of 20%, the pumpability of the cement slurry doubles, that is, from 1.5 to 3 hours. The economic efficiency has been proved of using these mixtures during insulating activities in the well No. 122 of the Kulychykhynske NHKR (oil and gas condensate field). The improved formulations of grout slurry with the addition of a Defecate are recommended to be used during repair-insulation works for delimitation of producing reservoirs prone to absorption, behind-the-casing flows and hydraulic fracturing. Originality.New dependences have been determined of the technological and rheological characteristics of grout slurries on the content of the Defecate additive, which makes it possible to set its optimal proportion. Practical implications. The use of grout mixture based on the Defecate will expand the raw material base for obtaining lightweight grout slurries. The properties of such a solution make it possible to use a grout mixture for cementing wells in the zone of abnormal pressures, while reducing the costs for the process of reservoir delimitation. Keywords: well, behind-the-casing flows, producing reservoir, grout slurry, Defecate

scholarly journals Actual situation and prospects for the development of the phosphate-raw material base of Russia

2020 ◽  
Vol 21 (3) ◽  
pp. 197-207
Author(s):  
Alexey F. Georgievskiy ◽  
Viktoriya M. Bugina
Keyword(s):  
Economic Development ◽  
Russian Far East ◽  
Far East ◽  
Raw Material ◽  
Mineral Fertilizers ◽  
Material Base ◽  
Resource Base ◽  
Current State ◽  
Foreign Countries ◽  
Phosphate Raw Material

The article analyzes the state of the phosphate raw material base in Russia and its role in the economic development of the country and in domestic agriculture especially. The problems that prevent the creation of a modern powerful phosphate production capable of satisfying the existing demands of agriculture in phosphoric mineral fertilizers are highlighted. The possible directions of the development of the phosphorus industry in the regions for the near and distant prospects are analyzed. The aim of the article is to analyze the current state of the domestic mineral resource base to produce phosphorus fertilizers, the acute shortage of which hinders the development of the country's agriculture. Actual base for research was mainly processed materials from specialized scientific articles and publicly available publications. In addition, data collected by the authors during thirty years of studying phosphorite deposits in Russia and foreign countries were involved. The analysis of published materials of leading Russian producers of phosphorus products, mining companies, databases of specialized federal and regional geological companies. It is concluded that before the country's geological services, the most important task remains to identify deposits of high-quality phosphate ores, and especially in Siberia and the Russian Far East. Significant prospects for the development of these regions are opened by the Northern Sea Route. The planned pace of its development offers unique opportunities for the economic development of the Taimyr-Anabar region, where huge resources of apatite-bearing carbonatites of the Tomptor alkaline massif and Meimech-Kotuy province are concentrated.

Influence of Fillers on Silicate Compositions Porization

2021 ◽  
Vol 887 ◽  
pp. 521-527
Author(s):  
O.A. Miryuk
Keyword(s):  
Electron Microscopy ◽  
Liquid Glass ◽  
Experimental Studies ◽  
Raw Material ◽  
Material Base ◽  
Technological Properties ◽  
Glass Cullet ◽  
Technical Properties ◽  
Mineral Additives ◽  
Porous Silicate

The article is devoted to the problem of raw material base expanding and improving construction and technical properties of porous granular materials. The results of experimental studies of silicate compositions based on liquid glass and technogenic fillers containing burnable or gas-forming components are presented. Influence of molding mixtures’ composition on thermal expansion nature of granular compositions was established. Preference of a filler combined, containing glass cullet, silica clay and mineral additives was revealed. Multicomponent composition of a filler helps to intensify composition’s expansion. Electron microscopy studies of porous silicate granules have confirmed the advantages of combined fillers using. Effectiveness of sodium additive introduction to regulate technological properties of the raw material and the process of pores formation has been proven. Expediency of mechanical activation of a raw mixture to reduce the temperature of expansion and obtain granules with a bulk density of not more than 300 kg/m3 has been determined.

CURRENT STATE OF THE RESOURCE BASE OF COAL MINING INDUSTRY IN KUZBASS

2020 ◽  
Vol 2 (1) ◽  
pp. 191-201
Author(s):  
S.V. SHAKLEIN ◽  
◽  
M.V. PISARENKO ◽  
◽  
Keyword(s):  
Coal Mining ◽  
Mining Industry ◽  
Coal Industry ◽  
Raw Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Material Base ◽  
Resource Base ◽  
Current State ◽  
Production Technologies

Analysis of the grade composition of the mineral resource base of the distributed and undistributed subsoil Fund as of 01.01.2018 showed a decrease in reserves of coal intended for open pit mining. In the future, the production of a number of technological grades of coal (gas fat (GZh), fat (Zh), coking fat (KZh), coking (K), coking caking low-metamorphized (KCN), coking caking (KC), lean caking (OC), low caking (CC) is possible only by underground method. The expansion of the raw material base of the Kuzbass coal industry and the support of coal production volumes, primarily by the technological of grades coking fat (KZh), coking (K), coking caking (KC), lean caking (OC), low caking (CC) involves exploration, the use of unconventional production technologies and tax preferences for coal mining enterprise

USE OF ALUMINUM-CONTAINING NANOTECHNOGENIC RAW MATERIALS AND CARBON WASTE IN THE PRODUCTION OF HEAT-RESISTANT CONCRETE

2021 ◽  
Vol 93 (1) ◽  
pp. 96-105
Author(s):  
B.Z. ABDRAKHIMOV ◽  
◽  
E.S. ABDRAKHIMOVA ◽  
Keyword(s):  
Chemical Industry ◽  
Building Materials ◽  
Raw Materials ◽  
Experimental Studies ◽  
Industrial Wastes ◽  
Raw Material ◽  
Phosphate Binders ◽  
Radius Of Curvature ◽  
Material Base ◽  
Heat Resistant

In this work, using waste from the chemical industry — aluminum-containing nanotechnogenic raw materials and a fuel and energy complex — coal enrichment based on phosphate binders, heat-resistant concrete with high physical and mechanical properties is obtained. Thanks to the use of orthophosphoric acid as a binder, it was possible to utilize 80-90% of chemical industry waste and coal preparation, which helps to reduce the anthropogenic load on the environment and humans. Studies show that as the grain size decreases, the total size of the interface is increased, the average radius of curvature of the convex sections decreases, their excess surface energy grows, and the distances between the sources and absorbers of vacancies in the system decrease. Experimental studies and rich practical experience in ceramic industries confirm the crucial role of the degree of grinding (or the use of nanoscale raw materials). Due to the action of this factor alone, it is possible in some cases to reduce the required sintering temperature by 50-100 °C or more. The use of industrial wastes in the production of building materials contributes to: a) the utilization of industrial wastes; b) environmental protection; b) the expansion of the raw material base for heat-resistant concrete based on phosphate binders.

Sign in / Sign up

Export Citation Format

Share Document