Complex Technology of Ash and Slag Waste from Power Plants

2021 ◽  
Vol 25 (7) ◽  
pp. 20-25
Author(s):  
L.M. Delitsyn ◽  
Yu.V. Ryabov ◽  
R.V. Kulumbegov ◽  
M.G. Sulman ◽  
Yu.Yu. Kosivtsov ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Power Plants ◽  
Optimal Size ◽  
High Quality ◽  
Flotation Reagents ◽  
Ash And Slag Waste ◽  
Complex Technology ◽  
Flotation Method ◽  
Carbon Iron ◽  
Slag Waste

The development of a comprehensive technology for the processing of ash waste (ASW), which is based on the extraction of carbon from the CSO by flotation method and iron-containing minerals by means of magnetic separation, is presented. The proposed approach is based on the extraction of carbon from ash and slag by flotation and iron-containing minerals by magnetic separation. In this work, the optimal size of the ash fraction supplied for flotation was established. It is shown that when the technological process is carried out according to the stadium scheme when flotation reagents are fed in fractions, it allows their consumption to be reduced and the recovery of carbon concentrate from underburning to be significantly increased. The developed technology was tested on a pilot plant. High-quality carbon, iron-containing and aluminosilicate products were obtained. Auxiliary enrichment processes such as classification, thickening and filtration were tested.

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 Production of high-strength ceramics from ash and slag waste

2021 ◽  
Vol 78 (2) ◽  
pp. 105-107
Author(s):  
P.S. Minakova ◽  
A.V. Taskin ◽  
I.I. Nadtochiy
Keyword(s):  
Power Plants ◽  
High Strength ◽  
Physical Characteristics ◽  
Foreign Experience ◽  
Ash And Slag Waste ◽  
Slag Waste

In the analytical part of the article, a review of domestic and foreign experience in the use of ash and slag waste (ASW) of coal-fired power plants in the manufacture of ceramic products was made. The practical part provides information on the technology of extracting the ash fraction suitable for the manufacture of ceramic products from the dump ash of Primorskaya SDPP. A method for the manufacture of ceramic bricks with a 100% ash and slag waste content is described, some physical characteristics of the products obtained are determined, and the characteristics of the products obtained are compared in accordance with GOST 530-2012.

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.

A Promising Method of Utilization of Ash and Slag Waste of Variable Composition at Coal-fired Power Plants

2021 ◽  
Vol 25 (9) ◽  
pp. 18-23
Author(s):  
L.M. Delitsyn ◽  
R.V. Kulumbegov ◽  
Yu.V. Ryabov ◽  
V.B. Petropavlovskaya ◽  
M.G. Sulman
Keyword(s):  
Construction Industry ◽  
Power Plants ◽  
Harmful Effect ◽  
Road Construction ◽  
Waste Storage ◽  
Ash And Slag Waste ◽  
Coal Power Plants ◽  
Coal Power ◽  
Slag Waste ◽  
Quantitative Chemical

A comparative analysis of ash and slag waste (ASW) of six deposits, differing in quantitative chemical and phase composition, granulometry, melting temperature and other properties, is presented, and the production of a material promising for the construction industry is proposed – aggloporite, the production technology of which practically does not depend on the composition and properties of TPP ash. Aggloporite can also be used in road construction to form side slopes. The proposed method of recovery of large volumes of ash and slag waste accumulated at a number of power plants opens up opportunities to improve the environmental situation in the areas located in the vicinity of coal power plants, free up significant land areas occupied by ash and slag waste storage facilities, and reduce the harmful effect of waste on soil, water and air.

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

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