scholarly journals Heat-insulating porous material based on glauconite-containing sands and aleurites of the Novodvorskoye deposit of the Republic of Belarus

2021 ◽  
Vol 57 (4) ◽  
pp. 463-471
Author(s):  
S. E. Barantseva ◽  
A. I. Pazniak ◽  
Y. A. Klimosh ◽  
I. M. Azaranka ◽  
N. N. Hundzilovich ◽  
...  
Keyword(s):  
Large Scale ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Molding Process ◽  
Resource Base ◽  
Coefficient Of Thermal Conductivity ◽  
Rational Combination ◽  
The Republic ◽  
Main Component

The results on the research of heat-insulating porous ceramic materials produced using overburden rocks of the Novodvorsk deposit of Pinsk district of the Brest region as the main component of raw materials are presented in the study and the use of bulk rock consisting of glauconite sands and aleurites is recommended. Low-melting clay, basalt and a blowing agent are used as additional components, rational combination of which would ensure the forming ability of ceramic masses and the required set of the physicochemical properties of the material. The dependence of the bulk density, swelling coefficient, coefficient of thermal conductivity on the chemical and mineral composition of the used and raw materials is established, wich is the criteria for choosing composition with the maximum use of overburden and the necessary plasticity of the ceramic mass required for the molding process of raw granules. The obtained results can serve as a basis for the large-scale use of not only the minerals of the Novodvorsk deposit (basalts and tuffs), but also associated – glauconite-containing overburden. This will make a significant contribution to the expanding the mineral resource base of the Republic of Belarus.

Preparation and Characterization of Quartz Porous Ceramic Materials Using the Yangtze River Sand

2013 ◽  
Vol 804 ◽  
pp. 52-56
Author(s):  
Yan Ping Feng ◽  
Zhi Wen Qiu ◽  
Xiao Bin Ma ◽  
Lei Zhao ◽  
Xin Chao Chen ◽  
...  
Keyword(s):  
Yangtze River ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Porous Ceramics ◽  
Low Grade ◽  
The Yangtze River ◽  
Insulation Property ◽  
River Sand ◽  
Porous Ceramic Materials

In order to lay raw materials foundation for increasing the performance of insulating brick with the low grade quartz sand along the Yangtze River, the quartz porous ceramic materials was researched in this paper. The results show the porosity of the porous quartz ceramics decreased with an increase in the sintering temperature. The pore is like the bowl shape, and the pore is closed pore, which is help to improve the heat insulation property of quartz porous ceramics. The CaSiO4 is produced in the ceramics after sintering processing. The shape is better, and the microstructure is circular and symmetrical pore, which is help to improve the mechanical property of quartz porous ceramics.

scholarly journals High performance ceramic stones on the basis of by-products of waste heaps - screenings and coal slurry

2019 ◽  
Vol 135 ◽  
pp. 03017
Author(s):  
Khungianos Yavruyan ◽  
Vladimir Kotlyar ◽  
Evgeniy Gaishun ◽  
Anastasia Okhotnaya ◽  
Elizaveta Lotoshnikova ◽  
...  
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Raw Materials ◽  
Minimum Cost ◽  
Coal Slurry ◽  
Manufacturing Cost ◽  
Scale Production ◽  
General Description ◽  
Technological Properties ◽  
Molding Process

General description of coal dumps products processing is described: medium factional materials - screenings that do not contain carbon; kiln fractional - coal sand, coal containing up to 30%; petty factional - coal slurries, coal containing up to 50% are given. Ceramic kilns and technological properties of processing coal dumps products are given. Compositions of raw mixtures for obtaining products with a compressive strength of 10-15 MPa and density less than 800 kg / m3, and considering the fact that the molding process is carried out semi-rigid extrusion and the necessity of minimum costs for firing is defined. Depending on the technological properties of screenings, depending on the degree of grinding and firing temperature is taken into account. Flow production of modern equipment is pointed out. Technical and economic indicators showing high profitability and the prospect of large-scale production of clay tiles on the basis of coal dumps processing products due to minimal manufacturing cost are mentioned. The carried out results of the work allowed to choose the raw materials and to develop the technological scheme of production of high-performance ceramic stones with a minimum cost. Implementation of the results in practice will create a highly profitable production and make the Rostov region a major manufacturer of ceramic wall.

Comparison of Porous Ceramic Materials with Low Thermal Expansion Coefficient Prepared with SiC and Black-Al2O3

2008 ◽  
Vol 569 ◽  
pp. 321-324
Author(s):  
Isaías Juárez-Ramírez ◽  
Koji Matsumaru ◽  
Kozo Ishizaki ◽  
Leticia M. Torres-Martínez
Keyword(s):  
Thermal Expansion ◽  
Room Temperature ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
X Ray Diffraction ◽  
Low Thermal Expansion ◽  
New Phase ◽  
Porous Ceramic Materials ◽  
Made In

Porous ceramic materials with low thermal expansion (LTE) at room temperature were prepared by heating a mixture of SiC or black-Al2O3, vitrified bonding material (VBM) and LiAlSiO4 at temperatures from 850°C to 1100°C. The mixture was prepared in adequate proportions to obtain a material with LTE according to previous works made in our laboratory. It was observed that a change in temperature provoked the formation of a new phase, LiAlSi3O8, which appears above 900°C. The presence of this new phase did not affect the thermal expansion value, keeping LTE at room temperature. All compounds showed around 40% of porosity, and Young’s modulus values of 30 GPa using black-Al2O3 or SiC. X-ray diffraction analysis (XRD) revealed that above 900°C the phase LiAlSi3O8 starts to appear as a consequence of the melting of VBM, which is reacting with the raw materials. SEM micrographs showed the presence of SiC or black-Al2O3 grains joined by VBM, which is acting as a bridge between them.

scholarly journals RESEARCH ON THE STRUCTURE OF CLAY RAW MATERIALS FOR CERAMIC PRODUCTS

2020 ◽  
Vol 3 (4) ◽  
pp. 13-23
Author(s):  
G. Batrshina ◽  
A. Davletshina
Keyword(s):  
Materials Science ◽  
Raw Materials ◽  
Ceramic Materials ◽  
Scientific Development ◽  
State University ◽  
Republic Of Bashkortostan ◽  
Construction Products ◽  
The Russian Federation ◽  
The Republic ◽  
Engineering Physics

the research uses some methods for determining materials, strictly applying the current standards and requirements of the Russian Federation. The degree of scientific development of this research is that specialists of the Department of Engineering Physics and Materials Physics of Engineering Faculty of Bashkir State University and the laboratory of JSC "Ceramics" of the Republic of Bashkortostan conducted research in the field of ceramic materials science for construction purposes. The methodological basis of the research is based on well-known methods of studying the structure of clay raw materials suitable for the production of construction products, with the choice of a stable light range of products and eliminates cracking in the technological process of brick production. The correct composition leads to a reduction in energy consumption without compromising the physical and mechanical characteristics of products.

scholarly journals Diversification as a strategic direction for sustainable development of enterprises in the agricultural sector of the economy

2021 ◽  
Vol 2 (99) ◽  
pp. 326-336
Author(s):  
S. Sokolyuk ◽  
◽  
M. Koroteev ◽  
O. Zharun ◽  
O. Tupchiy ◽  
...  
Keyword(s):  
Large Scale ◽  
Agricultural Sector ◽  
Raw Materials ◽  
Environmental Safety ◽  
Financial Economic ◽  
Raw Material ◽  
Added Value ◽  
Industrial Processing ◽  
Agricultural Enterprises ◽  
Rational Combination

The diversification of the activities of agricultural enterprises is considered as a process of mastering the production of new or expanding the range of traditional types of products, which makes it possible to more fully realize the existing natural, biological, resource, production potential and helps to strengthen financial, economic and environmental safety, increases the competitiveness and efficiency of economic entities. Today, the need to diversify the activities of domestic agricultural enterprises is determined by a set of prerequisites, both general economic and specific. In modern realities, the overwhelming majority of farmers are focused on the production of the most liquid and least capital- and labor-intensive types of products with a short payback period. The economic results of agricultural enterprises in most cases directly depend on the efficiency of production of grain and oilseeds. Narrow specialization, and sometimes practically monoculture, increases the threats of agrobiological, ecological, and economic nature Diversification of their activities allows minimizing the risks of agricultural enterprises from unfavorable phenomena of agrotechnical and weather-climatic nature and unforeseen changes in market conditions. Optimization of the sectoral structure on the basis of a rational combination of the main, additional, and subsidiary industries ensures more efficient use of land and means of production, leads to the leveling of seasonality, and creates conditions for an enterprise to receive a guaranteed stable income. The priority for the diversification of large-scale agricultural production is its investment and innovative development with a rational combination of crop and livestock industries, the revival of the traditional for Ukraine industries of beet growing, vegetable growing, horticulture, cattle breeding, pig breeding, sheep breeding. Diversification of the activities of small and medium-sized producers provides for an orientation towards the production of products with a high level of labor intensity, environmentally friendly organic products, niche agriculture, the production of non-traditional agricultural products, green, agritourism, etc. The need to change the raw material nature of the agricultural sector of the Ukrainian economy determines the need to increase the industrial processing of agricultural raw materials. This will not only make it possible to obtain greater added value, but will also ensure the creation of additional jobs, will contribute to the growth of incomes of the population, and an increase in the revenues of budgets of all levels. The development of diversification processes guarantees a stable income and an increase in the profitability of agricultural producers and will also contribute to the implementation of national priorities for ensuring the country's food security, increasing employment, and solving social and material problems of peasants.

Hydrothermal Slag/Glass Chemistry for Porous Materials Production

2012 ◽  
Vol 521 ◽  
pp. 35-45 ◽  
Author(s):  
Masanori Suzuki ◽  
Toshihiro Tanaka
Keyword(s):  
Raw Materials ◽  
Porous Ceramic ◽  
Hydrothermal Process ◽  
Value Added ◽  
Ceramic Materials ◽  
Hydrothermal Conditions ◽  
Conventional Sintering ◽  
Slag Glass ◽  
Sintering Processes ◽  
Porous Ceramic Materials

Hydrothermal treatment has been conducted to create porous glass or ceramics as value-added materials for the recycling of slag and glass. Under hydrothermal conditions, slag and glass react with a high pressurized H2O and hydrate glass phase containing plenty of H2O is formed to connect raw materials particles to make ceramic materials. The hydrothermal process takes advantages of energy costs, because it can be operated at a low temperature compared to conventional sintering processes. Since the hydrothermal process uses H2O to fabricate ceramic materials, it can be regarded as energy-saving, eco-friendly, and spontaneous materials processing. In the present study, we introduce some applications of hydrothermal treatments to slag / glass to produce functional porous ceramic materials.

Obtaining Efficiency Porous Ceramics with Controlling Size of Porosity

2014 ◽  
Vol 925 ◽  
pp. 464-468 ◽  
Author(s):  
Aleksandrs Korjakins ◽  
Liga Upeniece ◽  
Diana Bajare
Keyword(s):  
Mechanical Properties ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Construction Materials ◽  
Energy Resource ◽  
Resource Depletion ◽  
Ceramic Materials ◽  
Porous Ceramics ◽  
Primary Energy ◽  
Space Technology

Anxiety of society about global warming is increasingly growing and interest about construction materials that are less harmful to the environment is growing as well. Manufactures and scientists are urged to think about the usage of more effective resources, which are available and necessary for production, as well as to find possibilities and solutions for the decrease of primary energy resource depletion by producing ecological materials. Clay is one of local raw materials that can help solving growing problems by production of ceramic materials and their products, as well as more widely distributed sediments, which mainly form the upper part of Earth’s crust. Alongside traditional ceramic materials, porous ceramics are also widely researched, becoming an increasingly popular material in the world, mainly owing to their wide possibilities of usage in different technical and technology industries – from construction to mechanical engineering, health industry and even space technology. Obtaining porous ceramics using different kind of burnable fillers, such as natural products obtained as waste from agricultural industry, as well as controllable form products obtained from polymers, allow to form desirable porous structures within wide ranges: with pore dimensions starting from some micrometers up to 2-3 millimeters. Porous ceramic materials obtained within this research are breathing, they are thermostable materials, resistant to thermal impacts, corrosion and are easy in processing. During the presented research porous ceramics were produced using different kinds of burnable fillers. The optimal burning treatment was developed for obtaining required mechanical properties of porous ceramics. The physical-mechanical properties of obtained ceramics were evaluated.

scholarly journals Prospects for the creation of smart homes using energy-saving wall ceramic materials

2020 ◽  
Vol 164 ◽  
pp. 02029
Author(s):  
Alla Turchenko ◽  
Tatiana Davydova ◽  
Irina Spivak
Keyword(s):  
Energy Conservation ◽  
Energy Saving ◽  
Smart Home ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Material Consumption ◽  
Consumer Awareness ◽  
Insulating Materials ◽  
Active Approach

The article discusses the prospects of energy saving in a ‘smart home’, taking into account the characteristics of consumer behavior. It is shown that the technical characteristics of the building in conditions of insufficient consumer awareness (passive approach to energy conservation) are preferable to the characteristics associated with intelligent solutions (active approach). It was revealed that special attention is paid to assessing the possibility of reducing the energy loss of a building by wall enclosures. In this regard, the effectiveness of the use of popular wall structural and heat-insulating materials, which reduce energy and material consumption in their production, is analyzed. The rationality of the production of porous ceramic products by the method of introducing into the mixture of mineral pore-forming additives with plastic molding is proved. A composition of porous ceramic material has been developed using local raw materials to create wall structural and heat-insulating products that meet the requirements of energy conservation.

scholarly journals Study of zeolite-containing silicon rocks of Dagestan for obtaining a mineral additive to cement

2021 ◽  
Vol 10 ◽  
pp. 42-46
Author(s):  
A. R. Yusupov ◽  
◽  
S. A. Mamaev ◽  
Z. A. Yusupov ◽  
A. S. Mamaev
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Total Content ◽  
Cement Clinker ◽  
Resource Base ◽  
Siliceous Rocks ◽  
Productive Stratum ◽  
Mineral Additive ◽  
The Republic ◽  
Technological Study

Siliceous-carbonate rocks are widespread on the territory of the Republic of Dagestan, in which the total content of zeolites and opal-cristobalite-tridymite phase (OCT) exceeds 45 %, and the content of calcite is above 30 %. The rocks, composing a productive stratum (at least, most of it), lithologically correspond to opoka-like and highly siliceous limestones, zeolite-containing (10–15 %) and zeolite (40 % or more), weakly quartz and weakly clayey. However, they are distinguished from pure limestones by a low value of actual calcite part — often less than 50 %. Therefore, in this case, the section of the productive strata is defined as «folded by siliceous-carbonate zeolite-containing rocks.» Such rocks, in accordance with the results of laboratory and technological study, are considered as raw materials for the production of building materials. Zeolite-containing rocks are suitable for use as an additive in Portland cement, which will save cement clinker in the production process and improve the quality of cement. Prospecting works for zeolites and zeolite-containing rocks in the Levashinskaya (Levashinsky district) and Rubaschayskaya (Tabasaran and Kaitagsky districts) areas of Mountainous Dagestan were carried out by the non-metallic party of JSC Sevkavgeologiya in 2007–2009. The resources of siliceous zeolite-containing rocks are in the P1 category — 49.308 million tons, in the P2 category — 69.470 million tons. The predicted resources, their laboratory and technological properties (physicochemical, chemical, technological) indicate the possibility of creating a solid mineral resource base and construction of large complexes for the extraction and processing of zeolites and siliceous rocks in Levashinsky (Levoberezhny and Pravoberezhny areas) and Tabasaran (Dyubek area) regions of the Republic of Dagestan.

scholarly journals Territories of Priority Social and Economic Development as an Institute of Strategic Development f Single-Industry Towns (Based on the Republic of Tatarstan)

2020 ◽  
pp. 117-124
Author(s):  
Farid Abdulganiev
Keyword(s):  
Economic Development ◽  
Large Scale ◽  
Raw Materials ◽  
Territorial Development ◽  
Strategic Development ◽  
Development Tools ◽  
Social And Economic Development ◽  
Single Industry ◽  
The Republic ◽  
Economic Zones

Currently, it is not the export of energy resources or raw materials, but investments, modernization of production and the use of territorial development tools that arise in a number of factors of economic development and become key conditions for the development of the country. This mechanism allows to solve the problems of singleindustry towns, one of the problems of which is a narrow specialization and the mono-industrial type of city-forming enterprises. The author substantiates that the task of overcoming the narrow specialization of single-industry entities lies in economic diversification, including through the active use of the territorial development tools, such as federal economic zones, territories of priority social and economic development, industrial and investment sites. To encourage economy the only alternative is state investments and implementation of projects of territorial development. Only through changing (diversifying) the economic structure, it is possible to solve large scale tasks in the economic development of the country. It is important to solve such problems by creating an effective system of strategic management of social and economic development, the basic method of which is strategic planning. Institutional mechanisms will ensure the rational distribution of productive forces through the creation of special economic zones and territories of priority social and economic development. The article shows that in recent years, new institutes of the territorial development have been created at the federal and regional levels. The basic and well-proven instrument of strategic development is territories of priority social and economic development (TOSED). As a positive example, the author presents the analysis of the effectiveness of five single-industry towns that have received the status of TOSED (Naberezhnye Chelny, Nizhnekamsk, Zelenodolsk, Chistopol, Mendeleevsk) in the Republic of Tatarstan. Consequently it allows to draw the conclusion regarding the effectiveness of this tool from the standpoint of analyzing the dynamics of number of residents’ growth, number of workers, volume of capital investments made by residents.

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