Recycling large-tonnage copper slag as a secondary source of iron in the form of magnetite is limited by the liberation of finely disseminated phases, whereas particle shape has so far been regarded as a consequence of breakage rather than a controllable feed parameter. In the finite element model, particle contours were taken from optical micrographs, while the third dimension and…

The rapid increase in the production and consumption of electronic and electrical equipment has resulted in a significant global increase in electronic waste (e-waste). This complex waste stream has valuable rare earth elements, precious metals, and base metals, positioning it as an important secondary resource for the recovery of critical metals. With proper extraction and recovery technologies, e-waste presents a…

Hydrogen processing of magnetic scrap (HPMS) is a promising short-loop route for recycling end-of-life NdFeB permanent magnets; however, the resulting hydrogenated powder requires vacuum degassing before reuse. This study defines a phenomenological degassing window for HPMS jet-milled powder from end-of-life wind-turbine magnets by screening degassing temperature (650–900 °C), heating rate (1–3 °C/min), and dwell time (5–60 min) under vacuum. Pressure–temperature…

To address the marked differences in the host phases of phosphorus and vanadium, severe ore sliming, and the difficulty of synergistic recovery from the low-grade phosphorus–vanadium-associated ore in Mazharweina, Xinjiang, process mineralogical analysis, phosphorus flotation condition tests, and acid leaching-solvent extraction tests were conducted to investigate phosphorus and vanadium recovery from this ore. The results showed that the P2O5 and…