Silmet Produces Europe’s First Separated Dysprosium and Terbium Solutions

Neo Performance Materials commissioned a small-scale heavy rare earth solvent-extraction line at its Silmet facility in Estonia in April 2026. The line has produced separated dysprosium and terbium process solutions from mixed rare earth carbonate and is operating at nameplate capacity.

The achievement gives Europe a tangible heavy rare earth separation capability at a time when dysprosium and terbium remain among the most concentrated parts of the magnet supply chain. It is nevertheless an early operating milestone. Neo’s immediate focus is stable product purity before routine production, and the line is a precursor to larger commercial capacity rather than a complete substitute for Chinese supply.

Solvent extraction performance must be consistent

Separating neighbouring rare earth elements requires repeated solvent-extraction stages and tight control of acidity, organic loading, phase separation and impurities. Producing first solutions proves that the circuit works. Supplying customers requires the plant to achieve consistent purity, recovery and batch-to-batch performance over time.

Dysprosium and terbium are used to improve the high-temperature performance and coercivity of NdFeB magnets. Their value is high, but market volumes are relatively small. That makes operational precision important: modest losses in recovery or contamination can materially affect economics.

Neo says the line has reached nameplate capacity. The next useful disclosures will be tonnes of product, recovery, purity, operating cost and the identity or qualification status of customers. Without those measures, nameplate operation remains an engineering milestone rather than proof of a mature commercial business.

Feed security is as important as separation equipment

A separation line does not create heavy rare earth feed. Silmet requires mixed material containing sufficient dysprosium and terbium, supplied under terms that remain economic through price cycles and geopolitical disruptions.

Europe’s heavy rare earth vulnerability begins upstream. Many non-Chinese deposits are dominated by light rare earths, while ion-adsorption and other heavy-rich feed sources are limited. Neo therefore needs a diversified and traceable feed strategy if the line is to operate continuously and expand.

The commissioning announcement said the circuit processed mixed rare earth carbonate. Investors should watch the source, composition and duration of future feed contracts. A technically successful line operating intermittently would have less strategic value than a smaller line with dependable raw material.

Silmet is becoming part of a wider European magnet system

Neo is also ramping its European magnet manufacturing platform, which had produced its millionth magnet by the first quarter of 2026. The company is considering increasing first-phase magnet capacity from 2,000 tonnes a year to 5,000 tonnes.

Combining separation and magnet manufacturing can reduce handoffs and provide customers with more traceable material. It does not eliminate the need for oxide-to-metal conversion, alloying and customer-specific magnet qualification, but it gives Neo a stronger position across the chain.

Silmet’s first dysprosium and terbium solutions are therefore meaningful because they turn European policy into operating equipment. The commercial test is harder: stable purity, secure feed, competitive cost and qualified customers must all be demonstrated before the line can materially reduce Europe’s dependence on Chinese heavy rare earth processing.