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 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

TRACE ELEMENT ANALYSIS OF FLY ASH BY PIXE

1999 ◽  
Vol 09 (03n04) ◽  
pp. 417-422 ◽  
Author(s):  
V. VIJAYAN ◽  
S. N. BEHERA
Keyword(s):  
Fly Ash ◽  
Trace Element ◽  
Power Plants ◽  
Building Materials ◽  
Thermal Power ◽  
Trace Element Analysis ◽  
Chemical Properties ◽  
Solid Material ◽  
Thermal Power Plants ◽  
Element Analysis

Fly ash is a major component of solid material generated by the coal-fired thermal power plants. In India the total amount of fly ash produced per annum is around 100 million tonnes. Fly ash has a great potential for utilization in making industrial products such as cement, bricks as well as building materials, besides being used as a soil conditioner and a provider of micro nutrients in agriculture. However, given the large amount of fly ash that accumulate at thermal power plants, their possible reuse and dispersion and mobilization into the environment of the various elements depend on climate, soils, indigenous vegetation and agriculture practices. Fly ash use in agriculture improved various physico-chemical properties of soil, particularly the water holding capacity, porosity and available plant nutrients. However it is generally apprehended that the application of large quantity of fly ash in fields may affect the plant growth and soil texture. Hence there is a need to characterize trace elements of fly ash. The results of trace element analysis of fly ash and pond ash samples collected from major thermal power plants of India by Particle Induced X-ray Emission (PIXE) have been discussed.

Innovational Construction Materials of LLP “EcostroyNII-PV” Production

2021 ◽  
Vol 410 ◽  
pp. 806-811
Author(s):  
Kapar Sh. Aryngazin ◽  
Alexey V. Bogomolov ◽  
Askar K. Tleulessov
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Construction Materials ◽  
Electric Power Industry ◽  
Steelmaking Slag ◽  
Alumina Production ◽  
Building Products ◽  
Operational Characteristics ◽  
Ash And Slag Waste ◽  
Slag Waste

The article discusses the experience of recycling industrial waste from the electric power industry and metallurgy. Based on the experience of Ecostroy NII-PV LLP. The proposed technology for manufacturing building products from ash and slag waste provides innovative compositions of raw mixtures. What provides an increase in operational characteristics and labor productivity in construction. The applied technology, in comparison with the existing analogues, provides for the use of local waste (ash and slag waste from the combustion of Ekibastuz coal, bauxite sludge from the Pavlodar aluminum plant, steel-making slags), differing in chemical and granulometric composition. as well as binding properties from other analogs and prototypes. In the manufacture of building products introduced mixture, including, wt %: slag Portland cement - 14.32-17.00; sand - 18.74-25.52, crushed stone - 46.50-49.71, sludge from alumina production obtained during the recycling of bauxite from Kazakhstan - 5-7; self-disintegrating steelmaking slag - 5-7; ash and slag waste from thermal power plants from burning Ekibastuz coals - 5-7. According to the test results, the average tensile strength of building products (paving slabs, curbs, hollow bricks) is 3.2 - 3.8 MPa (strength class V2.5).

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.

scholarly journals INFLUENCE OF THE OPTIMAL GRAIN COMPOSITION OF AGGREGATE ON THE MAIN PHYSICAL AND MECHANICAL PROPERTIES OF FINE-GRAINED CONCRETE

2020 ◽  
pp. 151-157
Author(s):  
M.A. Dzhusupova ◽  
A. Talantbek kyzy
Keyword(s):  
Power Plants ◽  
Fractional Composition ◽  
Thermal Power ◽  
Physical And Mechanical Properties ◽  
Grain Composition ◽  
Fine Grained ◽  
Ash And Slag Waste ◽  
Slag Waste ◽  
Rational Composition ◽  
Artificial Origin

The article is devoted to the study of the possibility of reducing the consumption of cement in concrete by optimizing the fractional composition of small aggregates of natural and artificial origin and the use of ash and slag waste of thermal power plants. Using the computer program of the grain composition correction module allows you to quickly determine the rational composition of sand and ensure tight packaging of its grains in concrete. In addition, optimal quantities of hyperplasticizers were selected to produce concrete with the required physical and technical characteristics.

scholarly journals CONTRADICTION ASH-AND-SLAG OF TPP

2015 ◽  
Vol 3 (1) ◽  
pp. 53-56
Author(s):  
Кирил Безгласный ◽  
Kiril Bezglasnyy ◽  
Роман Скориков ◽  
Roman Skorikov ◽  
Артем Шаля ◽  
...  
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Power Plants ◽  
Building Materials ◽  
Thermal Power ◽  
Raw Material ◽  
Industrial Scale ◽  
Thermal Power Plants

This article shows the obstacles of using thermal power plant’s ash waste on an industrial scale. The results of determining the activity of fly ash and hydroremoval ash in a mixture with Portland cement are given. Schemes of translation ash from the category of waste with heterogeneous characteristics in the raw material with stable properties are offered. The most rational ways of using ash from thermal power plants in building materials are presented

Ash-Slag Waste of the Coal-Fired Thermal Power Plant as a Resource for the Construction Industry

2021 ◽  
Vol 1038 ◽  
pp. 290-295
Author(s):  
Viktor Kolokhov ◽  
Lina Moroz ◽  
Andrey Romin ◽  
Volodymyr Kovregin
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Raw Materials ◽  
Thermal Power ◽  
Metallurgical Industry ◽  
Ash And Slag Waste ◽  
Technical Properties ◽  
Concrete Materials ◽  
Slag Waste ◽  
Wide Potential

The article presents a study of the physical and technical properties of ash and slag waste Coal Power Plant. The main problem when using ash-slag mixtures is the variability of the particle size distribution of the material. Determining the characteristics of slag stored in the dumps of thermal power plants will help to choose the separation methods of this material, to address the disposal and accumulation of industrial waste, to expand the scope of their application. The obtained research results of physical and technical properties of waste of the Coal TPP testify to wide potential in the further use in many branches of the industry. Possible applications include fillers for concrete, materials for sandblasting (abrasive material), raw materials for the metallurgical industry, additives for the manufacture of binders, etc.

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