Shubov L.Ya., Doronkina I.G., Borisova O.N.
The article presents systematized information on recycling technologies providing for returning valuable components of
metal-containing waste into the economic cycle. A sequence of independent technological solutions opening opportunities
for solving circular economy tasks, allows to compare specific characteristics and effectiveness of each technology as
well as details and peculiarities of key processes. Authors demonstrate that main sources of rare and rare-earth elements
(REE) include phosphor-gypsum (REE, Sr); power plant ash (REE, Ti, Sc); metallurgical slag (Ge, Be, Se, Te, V); sulfuric
acid production dust (Se, Te); alumina production waste – red mud (Sc, REE); liquid waste of TiO2 production by sulfate
technology (Sc, Ti); refi ning fumes and dust (Se, Te); permanent magnet production waste (Nd, Sm). It is emphasized
that the use of beneficiation methods, acid degradation (extraction), ion-selective concentration, biotechnological methods,
electrolysis, thermal treatment as well as combinations of various techniques. To assess the quality of technogenic raw
materials and its usefulness for complex treatment, the analytical analysis methodology of patented technologies is applied
(technological samples were collected at real technological mineral assets).
Keywords: technology, metals, processing, extraction, circular economy, research, methodology, secondary resources,
enrichability.
DOI: 10.25791/esip.2.2026.1576
Pp. 42-50. |
