Metal recovery and conversion of steel slag into highly reactive cement components


For a long time a sustainable and careful use of our planet’s resources have been the motivation for industry and research institutions to improve the manufacturing processes of products continuously. One of these activities is to find a valorization for the iron and steelmaking slag in order to preserve natural resources.

1 Introduction

Blastfurnace slag is the result of pig iron production and is mainly turned into granulated slag. Finely ground it shows latent hydraulic properties and is already used as a cement component for many applications. However, contrary to this, the lesser reactive steel slags (LD and electric arc furnace slag) generated during the steelmaking process, have not been introduced as a composite material in cement until now.

Germany produces approx. 6 million tonnes of steel slag (3.5 million tonnes of LD slag and 1.8 million tonnes of electric arc furnace slag) [1]. Depending on its lime...

Related articles:


Circular economy and CO2 savings: BAM project for recycling steelmaking slag promises double benefit

Large quantities of crude iron can be recovered during steel production and at the same time a CO2-saving binder can be produced for the cement industry. The Bundesanstalt für Materialforschung und...

Issue 10/2018 US 2018/0170805 A1

Steel product, cement manufacturing process and cement

(22) 20.12.2017 (43) 21.06.2018 (57) The present invention relates to a novel cementitious product produced from steelworks slag additivation to obtain material having properties suitable for use in...

Issue 6/2023 LOESCHE GMBH

Greenkey Solutions: Loesche’s contribution to a sustainable cement production

Introduction On average during the last five years, the worldwide cement production amounted to 4.2 billion t [1]. The major constituent of cement is still Portland cement clinker (hereafter referred...

Issue 2/2021 LOESCHE GMBH

Loesche delivers a new raw material grinding plant to LafargeHolcim in Mannersdorf

At the end of 2020, Loesche received the order to supply a raw material grinding plant to the Lafarge cement plant Mannersdorf in Austria. Lafarge Zementwerke GmbH is a company of LafargeHolcim, one...

Issue 12/2016 LOESCHE GMBH

Ecocem France SAS has opted for another Loesche vertical roller mill

For the new Dunkerque cement plant, Ecocem France SAS, with their head office in Aix en Provence/France, has placed another order for a Loesche mill type LM 46.2+2 CS. The Loesche technology is...