Discover REMEDY
Rare Earth Elements (REE) seperation through an innovative magneto-chemical process
280 Kt
mine production of REO* worldwide
in 2021
*Rare Earth Oxide (REO)
85%
of REO* produced
in China
in 2019
*Rare Earth Oxide (REO)
29,4%
of REE used in permanent magnets in 2020
*Rare Earth Element (REE)
REMEDY
REE are used in many applications and products all over the world. The global mine REE production volume rose significantly during the last 20 years and the global market is expected to grow at a 9.1% CAGR until 2030 to reach USD15,473 Million.Among the global volume of REE used in the world, China has a monopoly with 60% of REE produced and 85% of REE refined.European Union must react to be self-sufficient by investing in innovative technologies of separation of REE.In 2020, 29,4% of the REE are used in magnets, the global market for REE in magnets is expected to grow at CAGR of 6,1% over 2022-2027. As a consequence the recycling of magnets is an additional way towards the European REE independancy.
Selective separation
Uses magnetic susceptibility
Better REE valorisation
#REE #REO #separation #selectivity #magneto-chemical #susceptibility #mining #magnets #recycling #innovation
From public lab
to market:
This innovation has been developped in Alsace territory, at the heart of the French-German-Swiss “golden research area”
A scientific international expertise
A strong network of partners
The innovation
REMEDY is an electrochemical method using the difference of magnetic susceptibility between the REEs (adjacent or not) in solution to separate them selectively and produce REO powders.
Today, the solvent separation processes requires a large number of separation stages, specifically for adjacent REEs. The difference of magnetic properties between REEs is an additional lever to simplify the separation process, decrease the number of separation steps and thus reduce the operating cost.
Keypoints
Magneto-chemical process
Adjacent REE separation
Mining mixture treatment
Magnets recycling
The applications
REMEDY is an ideal process for mining actors to improve their productivity.
Selective separation of at least one REE element from a mining mixture
High purity of extracted element
Improve the competitivity of separation processes external to China
The highly efficient separation of Dy | Tb | Nd | Pr by REMEDY is tailor-made for magnet recycling.It could simplify and improve the effectiveness of the separation for:
Recycling of magnet production scrap that cannot be directly re-used in the magnet production
End of life recycling of magnets after waste processing (hydrothermal...)
The features
Discontinuous SelectivityUnlike solvent extraction which separates each element, starting from lightest to heaviest, or the reverse, REMEDY process separates the most paramagnetic elements first, such as Dy or Gd, followed by the family of Nd-Pr. The diamagnetic ions, Sc3+, Y3+, and La3+ preferentially remain in solution.
Purification CapabilitiesThe innovative process can achieve high purity in a few steps.The process uses only aqueous nitrate-based solutions, which are compatible with existing solvent extraction processes, and has the advantage that no organic solvents are used.
Typical Electricity CostsThe primary operational cost is the electrical transformation of the solution of REE into a purified oxide. The electrical cost is around 0.1 - 0.2 €/kg of oxide produced per processing step.Table 1 on the right highlights the process costs for separating REE₁ from a mixture of REE₂:REE₁ or REE₃:REE₁.
*Assuming 50 €/MWh wholesale electricity price
| Other Element | REE₁ In | REE₁ Out | Cost* |
|---|---|---|---|
| / | Weight % | Weight % | €/kg |
| REE₂ | 54 | 99.9 | 0.13 |
| REE₃ | 53 | 92.9 | 0.22 |
Table 1 - Electrochemical energy costs for producing REE₁2O3 from solutions containing mixtures of either REE₂:REE₁, or REE₃:REE₁
The stages of development
Patent pending
Lab scale prototype
OPEX study ongoing
Non adjacent REE separation
With the expertise of
With the support of
With the trust of
The research team
REMEDY has been developped thanks to IPCMS, a French laboratory bringing together researchers of the University of Strasbourg and the CNRS (French National Center for Scientific Research).
Pr. Bernard DOUDIN
IPCMS
Professor
Dr. Jinu KURIAN
IPCMS
Scientific Researcher
Conectus
The project is financed by SATT Conectus, the primary partner of academic institutions in Alsace, France. SATT Conectus intervenes in the entire chain of technology transfer and public-private partnerships. It invests financially in innovative research projects to bring them to market and manages partnership contracts between public laboratories and companies. Its action is based on the scientific excellence of the laboratories located in Alsace (Grand Est region/France).
The partners
They believe in REMEDY
Robert GRESSER
CEO - Innovation to Value
«Remedy is a new concept for REE separation based on magnetic properties. Some adjacent REE very difficult to separate with the classic solvent processes could be easily separated . Remedy could simplify and increase the effectiveness of REE separation processes.»
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