This title appears in the Scientific Report :
2022
Please use the identifier:
http://dx.doi.org/10.3390/min12020121 in citations.
Please use the identifier: http://hdl.handle.net/2128/31022 in citations.
Assessment of Metallurgical Slags as Solar Heat Absorber Particles
Assessment of Metallurgical Slags as Solar Heat Absorber Particles
The use of ceramic solid particle technology in TES-integrated CSP plants offers a high solar-to-electricity ratio and enhanced storage densities, thanks to their high operational temperatures and wide temperature ranges. Metallurgical slags with composition similar to that of the state-of-art bauxi...
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Personal Name(s): | Alkan, Gözde (Corresponding author) |
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Mechnich, Peter / Lucas, Hugo / Knoblauch, Nicole / Sommerfeld, Marcus / Flucht, Ferdinand / Pernpeintner, Johannes / Sergeev, Dmitry / Müller, Michael / Friedrich, Bernd | |
Contributing Institute: |
Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Minerals, 12 (2022) 2, S. 121 - |
Imprint: |
Basel
MDPI
2022
|
DOI: |
10.3390/min12020121 |
Document Type: |
Journal Article |
Research Program: |
Thermal Energy Storage |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/31022 in citations.
The use of ceramic solid particle technology in TES-integrated CSP plants offers a high solar-to-electricity ratio and enhanced storage densities, thanks to their high operational temperatures and wide temperature ranges. Metallurgical slags with composition similar to that of the state-of-art bauxite particles can be used as a sustainable and economical secondary raw material to prepare solid particles. In this study, the as-received state and the high-temperature phase and microstructural changes of two fayalite slags from copper and lead production were elucidated by XRD and SEM/EDS methods in a comparative manner. Solid particles were prepared from slags by the oil dropping method, with subsequent heat treatment. Solar-thermal-application-related functional properties of slag particles, such as heat capacity, absorptance, and thermophysical properties, were evaluated by differential scanning calorimetry (DSC), spectrophotometer, heating microscope, and high-temperature compressive tests, respectively. Owing to the formation of more stable Fe-rich phase components and less amount of glassy phase, copper slag is found to be a more promising secondary resource than lead slag in terms of material and functional properties |