Recycling rare earth magnets for Bentley EV motors

June 01, 2020 // By Nick Flaherty
The €3m RaRE project is recycling rare earth magnet materials to build new motors for electric vehicle.
The €3m Rare-Earth Recycling for E-Machines (RaRE) project in Birmingham, UK, is recycling magnets to build new motors for electric vehicles from Bentley.

A £2.6m (€3m) project in the UK is aiming to recycle rare earth materials used in the magnets in motors for electric vehicles, starting with luxury car maker Bentley.

The Rare Earth Recycling for E-Machines (RaRE) project aims to establish an end to end supply chain to incorporate recycled rare earth magnets into electric vehicles. This will allows recycled magnets will be built into an ancillary electric motor to ultimately support the development of a commercial ancillary motor suite.

Key to the project is a patented process for extracting and demagnetising neodymium iron boron (NdFeB) alloy powders. This process was originally developed by Magnetic Materials Group (MMG) at the University of Birmingham (UoB) to recover rare earth magnetic material in scrap and redundant equipment. This process, called Hydrogen Processing of Magnet Scrap (HPMS) has been licensed to HyProMag, a local startup that includes the former and current heads of the MMG.

The project is funded by InnovateUK and includes HyProMag and Bentley Motors, part of the Volkwagen group. Bentley will use motors designed by Advanced Electric Machines Research, whose customers include Airbus and Tevva Motors. Other partners include electronic waste specialist Intelligent Lifecycle Solutions and Tier One automotive supplier Unipart Powertrain Applications.

Intelligent Lifecycle Solutions will establish the scrap sorting process to maximise process efficiency and rare earth material volumes, while HyProMag will develop a pilot line for making the recycled magnets. These will be built into the ancillary electric motor designed by AEMR to a Bentley specification. Unipart will then take the motor design and use it as the core focus for the design of a flexible volume motor assembly line suitable for production volumes of 100,000 units per year.

“RaRE is an exciting project and a fantastic opportunity to prove the importance and worth of short loop recycled magnetic material,” said Nick Mann, Operations General Manager of HyProMag. “NdFeB magnets are essential for many future technologies, and the emerging electric

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