What the review covers
Carmignano and colleagues examine iron-tailings composition, particle properties, recovery routes and applications, alongside a survey of patent applications.
What the authors found
The review describes iron recovery and uses in construction, ceramics and other materials. It stresses the differences between tailings from different ores and processing routes. Many published applications remained preliminary laboratory investigations.
Limits to application
The authors identify transport costs, product specifications, storage and consistent supply as barriers. Patent applications describe proposed inventions; the review discusses practical adoption separately.
Authors’ recommendations
They call for pilot-scale work and proof-of-concept testing with potential users, alongside economic and technical feasibility assessment.