scholarly journals Modern trends in the development of the construction industry in the production of building materials

Technobius ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 0003
Author(s):  
Aliya Aldungarova ◽  
Kapar Aryngazin ◽  
Vladimir Larichkin ◽  
Assem Abisheva ◽  
Kamilla Alibekova
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Power Plants ◽  
Building Materials ◽  
Moisture Absorption ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Ash And Slag Waste ◽  
Slag Waste ◽  
Construction Product

The paper describes the technology of manufacturing a construction product by vibrocompression using ash and slag waste from thermal power plants in the Pavlodar region. The task of the experimental research was to obtain a hollow wall stone based on ash and slag waste with a strength grade that is not inferior to products made according to the traditional recipe. The obtained samples with different ratios of components in the mixture were investigated for compressive strength, moisture absorption, frost resistance. It has been established that when ash and slag waste are added to the composition of the concrete mixture in an amount of up to 35 % of the mass of dry components, the strength characteristics of the hollow wall stone correspond to the selected brand

Composite Сarbonaceous Сoal-Water Suspensions

2021 ◽  
Vol 1045 ◽  
pp. 212-225
Author(s):  
Olena Svietkina ◽  
Kostiantyn Bas ◽  
Sergiy Boruk ◽  
Roman Klishchenko ◽  
Oleksandr Yehurnov ◽  
...  
Keyword(s):  
Power Plants ◽  
Statistical Data ◽  
Main Type ◽  
Thermal Power ◽  
Electric Energy ◽  
Oil Refining ◽  
Thermal Power Plants ◽  
Water Suspensions ◽  
Ash And Slag Waste ◽  
Slag Waste

In Ukraine, up to 75% of all electricity is supplied by thermal power plants, the main type of fuel for which is coal, which leads to the release of ash and slag waste at power plants in huge quantities. Every 10 years (according to statistical data) the amount of ash and slag produced at thermal power plants doubles. The use and creation of new modified consumers of coal-water fuel (CWF) and coal-water suspensions (CWS) occurs periodically. The ease of handling suspensions is captivating: in the energy sector, they can serve as the basis for the effective disposal of numerous accumulated wastes from coal preparation and oil refining, a significant reduction in the consumption of minerals for generating heat and electric energy, and minimizing the effect of heat power engineering on public health and the state of nature.

scholarly journals Use of ash and slag waste of thermal power plants

2019 ◽  
Vol 4 (3) ◽  
pp. 375-391
Author(s):  
Liudmila I. Khudyakova ◽  
◽  
Aleksey V. Zalutskiy ◽  
Pavel L. Paleev ◽  
◽  
...  
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Ash And Slag Waste ◽  
Slag Waste

scholarly journals Involvement in the economic turnover of ash and slag waste of thermal power plants in the interests of eco-oriented economic development

2020 ◽  
Vol 7 (4) ◽  
Author(s):  
Sergey Pukhov ◽  
Svetlana Kiseleva
Keyword(s):  
Economic Development ◽  
Waste Management ◽  
Power Plants ◽  
Negative Impact ◽  
Thermal Power ◽  
Integrated Approach ◽  
Thermal Power Plants ◽  
Ash And Slag Waste ◽  
The Russian Federation ◽  
Slag Waste

The article is devoted to the problem of reducing environmental pollution from ash and slag waste and obtaining benefits from their use in the national economy. The main aspects of the negative impact of ash and slag waste on the environment are considered. The use of ash and slag materials in the economy of Russia and foreign countries is characterized. The main problems in the waste management system in the Russian Federation, which impede the wider involvement of waste from thermal power plants in economic circulation, are identified. In the interests of reducing the negative impact of waste from thermal power plants on the environment and their more active involvement in the economic turnover, the most promising directions in this area have been identified. The current trends in the development of ash and slag waste management and the problems in this area are highlighted. The authors proposed to use an integrated approach to the waste management of thermal power plants, which covers various areas of technological activity and takes into account production, economic, environmental and other factors. The article presents a set of factors developed within the framework of the proposed approach that stimulate and hinder the development of projects in the field of waste management of thermal power plants. A set of indicators is proposed for analyzing projects (measures, programs) for the waste management of thermal power plants in the Russian Federation, reflecting commercial, environmental, socio-economic, legal interests. An approach and methodological basis for comparing alternative technologies (projects) for the treatment of waste from thermal power plants and selecting the most efficient are proposed. An algorithm for using an integrated approach to waste management of thermal power plants in the interests of sustainable economic development is proposed. The main provisions and conclusions of the study can be used in the practical activities of the fuel and energy complex, and can also serve as material for training specialists in the field of waste management and ensuring the environmental safety of the fuel and energy complex.

Ensuring Strength of Fine Grained Concrete with Mixed Cement Binders

2020 ◽  
Vol 864 ◽  
pp. 134-140
Author(s):  
A. Abdykalykov ◽  
M. Dzhusupova ◽  
Nadia Antoniuk ◽  
Aidai Talantbek Kyzy
Keyword(s):  
Statistical Models ◽  
Power Plants ◽  
Thermal Power ◽  
Strength Properties ◽  
Optimal Concentration ◽  
Thermal Power Plants ◽  
Fine Grained ◽  
Ash And Slag Waste ◽  
Preliminary Activation ◽  
Slag Waste

The article presents the results of the evaluation of the strength of fine-grained concrete of ordinary grades on mixed cement binders with ash and slag waste of thermal power plants. To ensure the required strength, the preliminary activation of the mixed binder was envisaged, which is one of the main techniques for reducing cement consumption. Experimental-statistical models of the strength properties of fine-grained concrete was obtained, which make it possible to predict the required strength with a minimum consumption of cement and the optimal concentration of ash in the binder.

scholarly journals Determination of dependencies of dehydration of thermal power plants’ ash and slag waste from equipment parameters

2019 ◽  
Vol 109 ◽  
pp. 00015
Author(s):  
Valentyna Cholyshkina ◽  
Serhii Kostyria
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Raw Material ◽  
Thermal Power Plants ◽  
Regression Equations ◽  
Processing Technologies ◽  
New Device ◽  
Ash And Slag Waste ◽  
Nonlinear Character ◽  
Slag Waste

Complex processing of ash and slag from coal-fired thermal power plants attracts a lot of attention. Waste processing will reduce the load on existing storage facilities, to return unburned coal to the boilers of power plants, to obtain a valuable raw material resource for construction, ferrous and non-ferrous metallurgy. At all thermal power plants of Ukraine utilization and storage of ash and slag is carried out by hydraulic method. Therefore, for all processing technologies relevant the dehydration of fine-disperse raw material. The article presents the results of laboratory tests of a new device for dehydration of ash and slag waste. It uses a set of influences on raw material: the overlay of vibration oscillations, the electric field and vacuumizing. By the method of pair linear correlations it is obtained that the dependence of moisture on each of the variable parameters has a weak nonlinear character. The exact and approximate multiple regression equations for the practical assessment of moisture under the combined action of all variable factors are obtained. With the size of the raw material + 0.63 – 0.05 mm, it allows to reduce the moisture from 30 to 9 %.

scholarly journals CHALLENGES AND OPPORTUNITIES OF UTILIZATION OF ASH AND SLAG WASTE OF TPP (THERMAL POWER PLANT). PART 1

2018 ◽  
Vol 61 (6) ◽  
pp. 439-446 ◽  
Author(s):  
G. S. Podgorodetskii ◽  
V. B. Gorbunov ◽  
E. A. Agapov ◽  
T. V. Erokhov ◽  
O. N. Kozlova
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Building Materials ◽  
Thermal Power ◽  
Far East ◽  
Organizational Factors ◽  
Coal Industry ◽  
Ash And Slag Waste ◽  
Slag Waste ◽  
Extraction Of Metals

 The further development of the Russian coal industry, especially in the regions of Siberia and the Far East, in line with the  Energy Strategy, predetermines the need to address the problem of  utilization of ash and slag wastes in newly implemented projects.  The total amount of ash and slag in the ash dumps in Russia is more  than 1.5  billion tons, and the area occupied by fly ash and slag wastes  (FASW) is more than 220 km2. At the same time, the degree of FASW  use does not exceed 10  %. It is shown that the main solutions for the  recycling of the industrial solid waste generated by thermal power  plants are their use in the production of building materials, road construction, or the complex processing of FASW with the extraction  of metals and the production of building mate rials either. Some fly  ash can be used in agriculture. The physicochemical properties of  fly ash and slag wastes and, accordingly, the directions of their use,  as well as the choice of technology, are determined by the mineral  part of the fossil coals and the way they are burned. To use fly ash in  the construction industry, it is necessary to transfer the ash removal  system to the dry method, accompanied, on the one hand, by a large  volume of capital investments in equipment and facilities for storage,  classification, crushing and grinding, the transfer of new physical and  chemical properties to fly ash and slag waste, and on the other side,  an increase in organizational and transport barriers. Examples of proposed technologies for utilization of ash and slag wastes in the form of metal recovery and production of building materials are given. To  obtain iron-containing concentrates, one-stage magnetic separation  is used, but the quality of the concentrate does not meet modern requirements. The most technologically effective for the extraction of  metals from ash and slag wastes are technologies based on flotation  methods. At the same time, it follows from the provided data that  their application can be limited to economic, organizational factors  and the emergence of new environmental risks. The conclusion is  made on the possibility of using the above technologies for existing  coal-fired power plants only with state support.

scholarly journals INFORMATION CONTENT OF MODELS FOR DETERMINING THE ENVIRONMENTAL CHARACTERISTICS OF THE ENERGY FACILITIES FUNCTIONING

2021 ◽  
pp. 49-61
Author(s):  
Елена Петровна Майсюк ◽  
Ирина Юрьевна Иванова ◽  
Роман Андреевич Иванов
Keyword(s):  
Greenhouse Gases ◽  
Information Content ◽  
Power Plants ◽  
Reference Data ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Sources Of Information ◽  
Environmental Characteristics ◽  
Ash And Slag Waste ◽  
Slag Waste

В статье сформирована последовательность выполнения действий по определению экологических характеристик функционирования объектов энергетики. Приведены показатели энергообъектов и справочные данные, необходимые для получения промежуточных показателей этапов исследований. Дано описание расчетных моделей определения массы выбросов в атмосферу загрязняющих веществ и парниковых газов и массы образующихся золошлаковых отходов. Модели разработаны на основе утвержденных методик для тепловых электростанций, котельных и дизельных электростанций. Показано, что технологии расчетов экологических характеристик для каждой категории энергообъектов зависят от вида сжигаемого топлива и типа используемого оборудования. Выполнена систематизация информации для моделей определения экологических характеристик функционирования энергетических объектов. Вся необходимая информация представлена в виде трех крупных блоков: характеристика населенных пунктов; показатели энергообъектов; справочные данные по видам топлива, энергетическому и улавливающему оборудованию. Приведено подробное описание показателей каждого блока информации. Показана зависимость перечня определяемых экологических характеристик энергообъектов от вида сжигаемого топлива. Обозначены источники информации и доступность получения показателей каждого блока. The article forms a sequence of actions to determine the environmental characteristics of the functioning of energy facilities. The indicators of energy facilities and reference data required to obtain intermediate indicators of research stages are presented. A description of the models for determining the mass of emissions of pollutants and greenhouse gases into the atmosphere and the mass of ash and slag waste are described. The models are developed on the basis of approved methodologies for thermal power plants, boiler houses and diesel power plants. It is shown that technologies for calculating environmental characteristics for each category of energy facilities depend on the type of fuel burned and the type of equipment used. The systematization of information for models to determining the environmental characteristics of the functioning of energy facilities has been carried out. All the necessary information is presented in the form of three large blocks: characteristics of settlements; indicators of energy facilities; reference data on types of fuel, energy and capture equipment. A detailed description of the indicators of each block of information is given. The dependence of the list of determined environmental characteristics of energy facilities on the type of burned fuel is shown. The sources of information and the availability of obtaining indicators for each block are indicated.

scholarly journals АНАЛИЗ ГРАНУЛОМЕТРИЧЕСКОГО СОСТАВА ЗОЛОШЛАКОВЫХ ОТХОДОВ ТЭЦ КЕМЕРОВСКОЙ ОБЛАСТИ

2021 ◽  
Vol 7 (4(58)) ◽  
pp. 27-31
Author(s):  
СОФИЯ АЛЕКСАНДРОВНА ДАЯНОВА ◽  
НАТАЛЬЯ ВЛАДИМИРОВНА ГИЛЯЗИДИНОВА
Keyword(s):  
Power Plants ◽  
Granulometric Composition ◽  
Thermal Power ◽  
The State ◽  
Thermal Power Plants ◽  
Waste Reuse ◽  
Ash And Slag Waste ◽  
Slag Waste

Aim: to research ash and slag waste from thermal power plants on the possibility of using them as a concretes’ aggregate. Tasks: tо explore ash and slag waste’s granulometric composition; to determine if the granulometric composition meets the state standard’s requirements; to explore the kind of the aggregate, fine or coarse. Possibility of practical using: this researching is directed to increasing of ash and slag waste reuse, decline quantity and volume of ash and slag waste and reduction their poison impact on the environment.

Sign in / Sign up

Export Citation Format

Share Document