Thermophysical characterization of a by-product from the steel industry to be used as a sustainable and low-cost thermal energy storage material

Iñigo Ortega-Fernández, Nicolas Calvet, Antoni Gil, Javier Rodríguez-Aseguinolaza, Abdessamad Faik, Bruno D'Aguanno

Research output: Contribution to journalArticlepeer-review

112 Scopus citations

Abstract

In the metallurgical industry, large amounts of waste called slag are accumulated besides the production of iron and steel. One part, considered as by-product, is recycled but the other part, considered as waste, is still landfilled with potential bad consequences for environment. In this paper, two electric arc furnace slag samples (most common steel production technology in Europe), have been considered and characterized to be used in medium and high temperature thermal energy storage systems. These slags have demonstrated relevant properties to store thermal energy by sensible heat from ambient temperature up to 1000 °C, and their representativeness of the worldwide produced slag in a wide EAF (electric arc furnace) steelmaking process range. The objective is to develop sustainable and low-cost thermal energy storage systems for industry waste heat recovery and in renewable energy applications. At the same time, this new valuable market for slag in the energy field could solve a big part of the waste management problem in the iron and steel sector.

Original languageBritish English
Article number7783
Pages (from-to)601-609
Number of pages9
JournalEnergy
Volume89
DOIs
StatePublished - 1 Sep 2015

Keywords

  • By-product
  • CSP (concentrated solar power)
  • EAF (electric arc furnace)
  • Industrial waste
  • Slag
  • TES (thermal energy storage)

Fingerprint

Dive into the research topics of 'Thermophysical characterization of a by-product from the steel industry to be used as a sustainable and low-cost thermal energy storage material'. Together they form a unique fingerprint.

Cite this