WP3 – Pre-concentration of the mineral matrix


The overall objective of this “Work Package” (WP) is to investigate different methods of crushing, milling as well as disintegration of steel slags by microwave heating. This is mandatory to achieve the liberation of individual phases from matrix required for physical separation and to increase reaction area for leaching by mechanical activation. To facilitate the leaching and the recovery of SMs (Cr, Mo, etc.) from steel slags, BRGM will perform physical separation techniques to recover metallic alloys in coarse fraction by using magnetic and density and gravity separation techniques.

Description of work

Task 3.1. – Comminution (M6-M12)

Task 3.2. – Processing of recovered slag metal fractions (M12-M18)


Phone: +33 4 77 42 01 23

Postal address
École des Mines de Saint-Étienne
158, cours Fauriel
CS 62362

F-42023 Saint-Étienne cedex 2