Hydraulic Tiles Produced with Fine Aggregates and Pigments Reclaimed from Iron Ore Tailings

authors	Fontes, WC; de Carvalho, JMF; Defaveri, K; Brigolini, GJ; Segadaes, AM; Peixoto, RAF
nationality	International
journal	JOURNAL OF SUSTAINABLE METALLURGY
author keywords	Iron ore tailings; Ceramic pigments; Recycled aggregate; Hydraulic tiles; Sustainability
abstract	Confronted with the growing ecological awareness of the consumer market, the construction industry has been seeking strategies to promote a higher insertion of waste in the production chain while contributing to the technological improvement of processes and products, as well as mitigation of social and environmental impacts and, at the same time, conferring intangible value to the product. In this sense, the present work describes how iron ore tailings (IOT) can be used in the production of cement-based (hydraulic) tiles. The physical, chemical, and mineralogical characterizations carried out demonstrated that the IOT beneficiation (segregation) process resulted in a high-quality siliceous aggregate and a Fe-rich clay. The latter can be used as a pigment, whose pigmentation and cementing potentials improve with calcination and grinding. Compared to hydraulic tiles prepared with conventional materials, those obtained with the IOT-based materials displayed a pleasing appearance and the expected physical-mechanical performance.
publisher	SPRINGER
issn	2199-3823
isbn	2199-3831
year published	2021
volume	7
issue	1
beginning page	151
ending page	165
digital object identifier (doi)	10.1007/s40831-020-00329-9
web of science category	15
subject category	Green & Sustainable Science & Technology; Metallurgy & Metallurgical Engineering
unique article identifier	WOS:000609348000001