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http://hdl.handle.net/1843/61007| Type: | Artigo de Periódico |
| Title: | Iron recovery from iron ore tailings by direct hydrogen reduction at low temperature and magnetic separation |
| Authors: | Rochel Montero Lago Ana Paula de Carvalho Teixeira Paula Sevenini Pinto José Domingos Ardisson Adriana Barbosa Salviano Luisa Emanuele Milagre Larissa Caroline Martins Moreira Hamilton Pereira da Rocha Júnior Fabrício Vilela Parreira |
| Abstract: | In this work, we describe a sustainable alternative to recover iron from two iron ore tailings (IOT) using hydrogen reduction at relatively low temperatures followed by magnetic separation. X-ray powder diffraction (XRD), inductively coupled plasma (ICP), atomic absorption (AA), Mössbauer, scanning electron microscopy (SEM/EDS), Raman and thermogravimetry (TG) analyses indicated that the Fe oxide present in the IOTs (sandy tailing (ST) and mud tailings (MT), can be reduced with H2 at 500 ºC to produce α-Fe. Upon magnetic separation the mud tailing produced a 77 wt.% magnetic fraction increasing the Fe content from 19.2 to ca. 56 wt.% of Fe. On the other hand, the sandy tailing resulted in a 15 wt.% magnetic fraction increasing the Fe content from 19.2 to 70 wt.%. These results indicate that up to 86% of iron can be recovered from the IOT wastes already in the metallic form which can be very interesting for the steel industry. |
| Subject: | Hidrogênio Refugos (Metalurgia) Redução de minérios Ferro - Minas e mineração Resíduos - Reaproveitamento |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://dx.doi.org/10.21577/0103-5053.20220053 |
| URI: | http://hdl.handle.net/1843/61007 |
| Issue Date: | 2022 |
| metadata.dc.url.externa: | https://jbcs.sbq.org.br/default.asp?ed=329 |
| metadata.dc.relation.ispartof: | Journal of the Brazilian Chemical Society |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Iron Recovery from Iron Ore Tailings by Direct Hydrogen Reduction at Low.pdf | 2.95 MB | Adobe PDF | View/Open |
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