GreenRoc Strategic Materials (AIM:GROC) rallied sharply and closed at 5.3p, up 10.65%, and finished the day near its intraday high after completing the graphite mill circuit at its Active Anode Materials pilot plant in Hoersholm, Denmark.
GreenRoc, an AIM‑quoted UK company developing the Amitsoq graphite project in Greenland, said the mill circuit comprises both micronisation and spheronisation lines and has a processing capacity of approximately 100kg of feedstock per day, producing both main and fine‑grained products.
The mill lines were delivered from a leading Chinese graphite mill manufacturer in early March and on 23 April the pilot processed the first 100kg of -195 (>95% purity) graphite concentrate through the microniser and multiple spheronisation passes, the company said.
The line produces a main product with a mean particle size (D50) of approximately 12-20µm and a finer by‑product with a D50 of 7-15µm, tailored to customer requirements.
Products from the initial run are being evaluated at GreenRoc’s in‑house laboratory using Malvern laser particle and tap‑density analysers and will be supplemented by SEM imaging at the Technical University of Denmark.
The only section still to be installed is the purification line, which is in final design and equipment sourcing with installation expected in the second half of 2026.
GreenRoc’s development is supported by a binding EUR 5.2m secured loan from the Export and Investment Fund of Denmark and an up‑to DKK 10.45m EUDP grant for the EU‑Graphite project, and the company has an existing partnership with Morrow Batteries to establish a regional supply chain.
“We are delighted with the successful commissioning of the graphite mill lines at our AAM pilot plant, which we believe to be Europe’s first natural flake graphite pilot plant,” CEO Stefan Bernstein said.
With minor modifications to improve monitoring and safety planned over the coming week, GreenRoc expects the mills to be ready for test production to meet battery‑industry requirements and to continue calibration towards commercial product quality.
