WP4 – Development of an innovative hydrometallurgical laboratory process


This “Work Package” (WP) refers to the development of a processing technology based on hydrometallurgical principles at a “Technology Readiness Level”(TRL) of 3-4. The overall objective of this WP is to define the final optimized hydrometallurgical circuit to achieve the highest “Strategic Metals” (SMs) extraction yield, while preserving the mineral matrix resulting from the physical treatment applied in WP3. For that WP, expertise will be mainly drawn from ARMINES/SPIN and BRGM.

Description of work

Task 4.1. – Optimization of the alkaline hydrometallurgical process (M18-M24)

Task 4.2. – Laboratory pilot testing (M24-M30)

Task 4.3. – Analytical and mineralogical characterization (M18-M30)


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