Development of innovation routes for iron ore using high intensity magnetic separators.

• Autor(a) principal: Menezes, Késsius Bortolan
• Data de Publicação: 2022
• Outros Autores: Gonçalves, Ana Vitória de Moura, Rodrigues, Otávia Martins Silva, Reis, Érica Linhares
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFOP
• Texto Completo: http://www.repositorio.ufop.br/jspui/handle/123456789/15476; https://doi.org/10.1590/0370-44672021750076
• topic: Slime ultrafines; Dispersion; Processing routes

The mineral processing of low-grade iron ores commonly generates large vol- umes of slime, which are disposed as tailings. Modern mining requires strives to elimi- nate the use of tailings dams in a maximum effort to increase metallurgical recovery, the security and reduction of the operational cost. This research aims for the recovery of iron contained in the slime, which consists of a material with 38% Fe and <40 μm, originating from the desliming cyclones. Pilot tests were performed on the Wet High- Intensity Magnetic Separator (WHIMS) and on the Vertical Ring Pulsating High Gra- dient Magnetic Separator (VPHGMS) considering different configurations in terms of operating parameters and routes. The best results were obtained for VPHGMS with an iron content in the concentrate of 67.06% and mass and metallurgical recovery of 32.42% and 56.86%, respectively. In the best condition tested, around 540 thou- sand tons of concentrate can be incorporated into production and has great envi- ronmental relevance.