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Cheng S, Han Y, Tang Z, Li W. Producing magnetite concentrate from iron tailings via suspension magnetization roasting: A pilot-scale study. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2189055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Shaokai Cheng
- School of Resources and Civil Engineering, Northeastern University, Shenyang, PR China
- National-local Joint Engineering Research Center of High-efficient exploitation technology for Refractory Iron Ore Resources, Shenyang, PR China
| | - Yuexin Han
- School of Resources and Civil Engineering, Northeastern University, Shenyang, PR China
- National-local Joint Engineering Research Center of High-efficient exploitation technology for Refractory Iron Ore Resources, Shenyang, PR China
- State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, PR China
| | - Zhidong Tang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, PR China
- State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, PR China
| | - Wenbo Li
- School of Resources and Civil Engineering, Northeastern University, Shenyang, PR China
- State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, PR China
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Liu P, Zhu X, Han Y, Li Y, Gao P. Fluidization magnetization roasting of limonite ore using H2 as a reductant: Phase transformation, structure evolution, and kinetics. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Abstract
In this study, a novel technology for the comprehensive utilization of low-grade iron ore is presented. For the iron ore with a Fe content of 24.91%, a pilot-scale study of pre-concentration, suspension magnetization roasting, grinding, and low-intensity magnetic separation was conducted, and an iron concentrate with a grade of 62.21% and a recovery of 85.72% was obtained. The products were analysed using chemical elemental analysis, particle size analysis, X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry. The results indicated that hematite was reduced by CO and H2 mixture and transformed into ferrimagnetic magnetite in the suspension magnetization roasting, which was easily recovered in the subsequent magnetic separation. Additionally, a pre-concentration tailing with a SiO2 content of 81.55% and a magnetic tailing of the roasted ore with a SiO2 content of 79.57% were obtained, which can be used as building materials. This presents significant implications for the comprehensive utilization of low-grade iron ore.
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