Hydrometallurgical Processing of Brazilian Iron Ore Tailings for the Synthesis of Pigments

Autor:	Almeida, Vítor Otacílio de, Schneider, Ivo Andre Homrich
Rok vydání:	2022
Předmět:	Pigments Pigmentos Iron ore tailings Reaproveitamento de resíduos Iron oxide Hydrometallurgy Minério de ferro General Medicine Waste management Rejeito de mineração
Zdroj:	Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS
ISSN:	2161-7546 2161-7538
Popis:	The aim of this study was to investigate the synthesis of iron oxide pigments from IOT. The sample of IOT was obtained through mining activity of the Quadrilátero Ferrífero in the state of Minas Gerais, Brazil. The procedure was carried out by hot acid leaching with hydrochloric acid (HCl) which allowed the recovery of about 95% of the iron in a liquor. The iron-based pigments— red (IBP_R), black (IBP_B), and yellow (IBP_Y)—were synthetised from the liquor by selective precipitation, crystallisation, and thermal procedures. The pigments were characterised by particle size distribution, mineral and chemical compositions, as well as colourimetric properties. The process of synthesis was successful and the procedure was shown to maximise the utilisation of mineral resources and minimise the environmental, social, and economic impacts associated with IOT disposal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6f6de1abb4c4c9e1498d0f5a414a1a9 https://doi.org/10.4236/gm.2022.122003 Zobrazit plný text záznamu