Solid Fuel Combustion Wastes at CHPP in the Arctic Zone of the Russian Federation: Utility in Eco-Geopolymer Technology

Yatsenko, E. A.; Smolii, V. A.; Klimova, L. V.; Гольцман, Б. М.; Ryabova, A. V.; Golovko, D. A.; Chumakov, A. A.

doi:10.1007/s10717-022-00414-3

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…To study the effect of the chemical composition of ASW on the physical–chemical and mechanical properties of porous geopolymers, ASW from the Apatitskaya CHPP (Apatity, Murmansk Region, Russia) and Severodvinskaya CHPP-1 (Severodvinsk, Arkhangelsk region, Russia) were studied. Previously, the authors studied the chemical ( Table 1 ) and phase ( Figure 1 ) composition of the used ASW [ 40 ]. As can be seen, the main components in both cases are SiO 2 and Al 2 O 3 , the total content of which is more than 75%.…”

Section: Methodsmentioning

confidence: 99%

“…Chemical analysis, differential thermal analysis, and X-ray phase analysis were carried out, and the microstructure of the samples was determined. It was determined that due to the presence of an amorphous aluminosilicate structure in the composition of ash and slag, they can be used in the synthesis of geopolymer materials [ 40 ]. Radiological studies of ASW were carried out, during which it was found that the samples comply with regulatory requirements and can be used for all types of construction.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition

et al. 2022

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The possibility of improving the properties of porous geopolymer materials based on ash and slag waste from thermal power plants by adjusting their chemical composition is considered. An X-ray phase analysis of ash and slag wastes was carried out, the geopolymers’ precursor compositions were calculated, and additives to correct their chemical composition were selected. The samples were synthesized and their physical and mechanical properties (density, porosity, compressive strength, thermal conductivity) were analyzed. The micro- and macro-structure of the samples and the pore distribution of the obtained geopolymers were studied and pore-distribution histograms were obtained. The influence of Si:Al ratio on structural changes was described. The geopolymers’ phase composition was studied, consisting of an amorphous phase and high quartz and mullite. A conclusion about the applicability of this method for obtaining high-quality porous geopolymers was made.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition

et al. 2022

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“…At coal power plants, electricity is generated by coal combustion. Which generates a huge amount of waste (ash and slag waste) [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Aleksandrova,

Nikolaeva,

Afanasova

et al. 2024

Minerals

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This article presents the results of research aimed at optimizing the process of recovery of valuable components from ash and slag waste from thermal power plants. In this work, both experimental and theoretical studies were carried out to substantiate the use of magnetic separation methods for ash and slag waste processing. Ash and slag wastes were chosen as an object of research due to the presence of valuable components such as iron, aluminum, etc., in them. The research results showed that the method of magnetic separation, including high-gradient magnetic separation, can be effectively used in ash and slag waste processing. As a result, the topology of a magnetic beneficiation technological scheme has been proposed to obtain high-value-added products such as high-magnetic iron minerals, low-magnetic iron minerals, and aluminosilicate microspheres. By using magnetic separation in a weak magnetic field, magnetic microspheres containing high-magnetic iron minerals associated with intermetallics, ranging in size from 20 to 80 µm, were recovered. In the second stage of magnetic separation (high-gradient magnetic separation), an iron ore product with an iron content of 50% with a recovery of 92.07% could be obtained. By using scanning electron microscopy, it was found that the main part of microspheres, which contain low-magnetic iron minerals and aluminosilicates, with sizes from 2 to 15 microns, was recovered in the magnetic fraction. This paper proposes a new approach to the enrichment of ash and slag materials using magnetic separation, which will increase the efficiency of their processing and make the process environmentally sustainable.

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Influence of Modifying Additives on the Structure and Properties of Porous Geopolymer Building Materials Based on Solid Fuel Combustion Waste of Arctic Thermal Power Plants

Yatsenko

Гольцман

Trofimov

et al. 2023

Lecture Notes in Civil Engineering

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Solid Fuel Combustion Wastes at CHPP in the Arctic Zone of the Russian Federation: Utility in Eco-Geopolymer Technology

Cited by 11 publications

References 9 publications

Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition

Improving the Properties of Porous Geopolymers Based on TPP Ash and Slag Waste by Adjusting Their Chemical Composition

Increase in Recovery Efficiency of Iron-Containing Components from Ash and Slag Material (Coal Combustion Waste) by Magnetic Separation

Influence of Modifying Additives on the Structure and Properties of Porous Geopolymer Building Materials Based on Solid Fuel Combustion Waste of Arctic Thermal Power Plants

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