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Assessment of Metallurgical Slags as Solar Heat Absorber Particles

Alkan, Gözde and Mechnich, Peter and Lucas, Hugo and Knoblauch, Nicole and Sommerfeld, Marcus and Flucht, Ferdinand and Pernpeintner, Johannes and Sergeev, Dmitry and Müller, Michael and Friedrich, Bernd (2022) Assessment of Metallurgical Slags as Solar Heat Absorber Particles. Minerals, 2022 (12), p. 121. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/min12020121. ISSN 2075-163X.

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The use of ceramic solid particle technology in TES integrated CSP plants offers high solar to elec-tricity ratio and enhanced storage densities thanks to their high operational temperatures and wide temperature ranges. Metallurgical slags with similar composition to the state-of-art bauxite particles can be utilized as a sustainable and economical secondary raw material to prepare solid particles. In this study, as-received state and high temperature phase and microstructural changes of two fayalite slags from copper and lead recycling were elucidated by XRD and SEM/EDX methods in a comparative manner. Solid particles were prepared from slags by oil dropping method with subsequent heat treatment. Solar thermal application related functional properties of slag particles such as heat capacity, absorptance ad thermo physical properties were evaluated by DSC, spectrophotometer, heating microscope and high temperature compressive tests; respective-ly. Owing to the formation of more stable Fe-rich phase components and less amount of glassy phase, copper slag is found out as a more promising secondary resource than lead slag in terms of material and functional properties.

Item URL in elib:https://elib.dlr.de/190779/
Document Type:Article
Title:Assessment of Metallurgical Slags as Solar Heat Absorber Particles
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Mechnich, PeterUNSPECIFIEDhttps://orcid.org/0000-0003-4689-8197UNSPECIFIED
Lucas, HugoUNSPECIFIEDhttps://orcid.org/0000-0002-4224-3153UNSPECIFIED
Sommerfeld, MarcusUNSPECIFIEDhttps://orcid.org/0000-0002-1560-6350UNSPECIFIED
Pernpeintner, JohannesUNSPECIFIEDhttps://orcid.org/0000-0003-4895-6135UNSPECIFIED
Sergeev, DmitryUNSPECIFIEDhttps://orcid.org/0000-0003-4741-9119UNSPECIFIED
Müller, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-2260-0934UNSPECIFIED
Friedrich, BerndUNSPECIFIEDhttps://orcid.org/0000-0002-2934-2034UNSPECIFIED
Date:January 2022
Journal or Publication Title:Minerals
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:p. 121
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:Metallurgical Slags, Heat Absorber Particles
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E VS - Combustion Systems
DLR - Research theme (Project):E - Materials for High-Temperature Thermal Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional ceramics
Deposited By: Mechnich, Dr.rer.nat. Peter
Deposited On:28 Nov 2022 08:05
Last Modified:28 Nov 2022 08:05

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