En
期刊文章
文章精选
当期目录
过刊浏览
高被引
高下载
特邀文章
专刊合集
待刊文章
Volume 113
您当前的位置：首页 > 期刊文章 > 过刊浏览 > Volumes 108-119 (2025) > Volume 113
Rheological and morphological characterization of alternative solid particle materials for CSP applications (Open Access)
Minerva Díaz-Heras a b *, Marc Majó c, Alejandro Calderón c, José A. Almendros-Ibáñez a b, Camila Barreneche c *
a Universidad de Castilla-La Mancha, Renewable Energy Research Institute, c/ de la Investigación s/n, 02071, Albacete, Spain
b Universidad de Castilla-La Mancha, E.T.S. de Ingeniería Industrial, Dpto. Mecánica Aplicada e Ingeniería de Proyectos, Campus Universitario s/n, 02071, Albacete, Spain
c Departament de Ciéncia de Materials i Química Física, Universitat de Barcelona, C/Martí i Franqués 1, 08028, Barcelona, Spain
10.1016/j.partic.2026.03.013
Volume 113, June 2026, Pages 140-150
Received 2 December 2025, Revised 4 February 2026, Accepted 4 March 2026, Available online 27 March 2026, Version of Record 2 April 2026.
E-mail: Minerva.diaz@uclm.es; c.barreneche@ub.edu
Highlights

• Four residual materials were studied as alternative materials for CSP applications.

• Morphological and rheological properties were measured for four residual materials.

• Flotation Sterile and Ladle Furnace Slag exhibited stable behavior in fluidization.

• Ladle furnace slag is a cost-effective and flow efficient medium for TES systems.

• Ladle furnace slag has a yield stress ∽50% lower than that of flotation sterile.


Abstract

This study is focused on four residual materials, volcanic ashes (VA), flotation sterile (FS), ladle furnace slag (LFS) and black slags (BS) and their potential application as solid particles’ media in fluidized beds for thermal radiation processes. Although all materials fall within the Geldart B classification—indicating favorable fluidization behaviour—only two, FS and LFS, exhibited stable and complete fluidization. Detailed rheological and morphological analyses were conducted before and after exposure to radiation and fluidization, revealing no significant structural degradation. Minimum fluidization velocities were determined to assess flowability, leading to the exclusion of BS and VA materials despite their adequate physical and thermal properties. Between the two suitable candidates, LFS demonstrated a yield stress approximately 50% lower than that of FS, suggesting superior flowability and reduced mechanical resistance under non-confined conditions. However, LFS required a slightly higher minimum fluidization velocity (1.1 L/min more) due to its heterogeneous particle morphology. These findings highlight the potential of LFS as a cost-effective and flow-efficient medium for use in particle-based thermal energy storage systems.

Graphical abstract
Keywords
Alternative materials; TES; Solid particles; Rheology; CSP; High temperature
文章导读