Hydrogen-based mineral phase transformation of bastnaesite: Detailed assessment of physicochemical properties and flotation behavior

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156992 - 156992

Опубликована: Окт. 1, 2024

Язык: Английский

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Modeling Heterogeneous reaction kinetics of nickel laterite ore directly reduced by H2 using a novel pore model

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 105, С. 1451 - 1466

Опубликована: Фев. 3, 2025

Язык: Английский

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Efficient Separation of Iron and Rare Earths from Low-Grade Complex Polymetallic Ores

ACS Omega, Год журнала: 2025, Номер 10(7), С. 6965 - 6975

Опубликована: Фев. 13, 2025

The Bayan Obo mine is a vast deposit containing multiple types of metals. This research proposed method called suspension magnetization roasting–magnetic separation. results indicated that iron concentrates with an grade 65.10% and recovery rate 88.74% could be achieved by subjecting the mixture to temperature 425 °C for 30 min, CO concentration 20%, grinding fineness −0.038 mm 95% yield. rare earth element 8.58% 92.29% can extracted from tailings following magnetic procedure entailed transformation hematite into magnetite, leading significant enhancement in saturation intensity material underwent treatment. facilitated subsequent recovery. roasted particles transformation, resulting roughened surface. Several fissures developed between elements other minerals, favoring process

Язык: Английский

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A Review of Rare Earth Elements Recovery from Bastnaesite Ore: From Beneficiation to Metallurgical Processing

Journal of Sustainable Metallurgy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Язык: Английский

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A comparison between the magnetic reduction behavior of hematite in H2 and CO atmospheres

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 111, С. 449 - 461

Опубликована: Фев. 26, 2025

Язык: Английский

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Enhanced grindability of bastnaesite ore by ex-situ CO2 treatment under the partial pressure of 0–100 psi

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(2), С. 116088 - 116088

Опубликована: Март 6, 2025

Язык: Английский

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Mechanism analysis of hydrogen mineral phase-transformed iron ore tailings in cementitious materials: A study on hydration kinetics, mechanical properties, and microstructural characteristics

Construction and Building Materials, Год журнала: 2025, Номер 475, С. 141260 - 141260

Опубликована: Апрель 11, 2025

Язык: Английский

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Enhancing Magnetic Contrast through Mineral Phase Transformation: Flotation Performance of Bastnaesite-Transformed Products

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Апрель 17, 2025

With resource depletion, the integrated utilization of low-grade rare-earth ores has garnered widespread focus. However, conventional beneficiation processes are unable to efficiently recover valuable components. This study provides a mineral phase transformation (MPT) strategy enhance separation by amplifying magnetic contrast between bastnaesite and iron minerals. Roasting was conducted on single bastnaesite, bastnaesite-hematite mixed minerals, Bayan Obo polymetallic ore (BOLPO). The effect MPT subsequent flotation explored. Relevant analytical tests were employed examine surface property changes during MPT, elucidating behavior products. results showed that improved contrast, yielding favorable indices for iron. Furthermore, products recovered using benzohydroxamic acid (BHA). For BOLPO, produced concentrate with 61.69% grade 84.24% recovery, while open-circuit yielded 60.46% REO 50.78% recovery. During experienced oxidation decomposition, cerium reduction, reoxidation, forming roasting Ce7O12 CeF3. Ce(IV) partially reduced Ce(III), performance reduction affected oxygen vacancies specific area. Oxygen increased hydrophilicity BHA consumption. Conversely, decreased area enhanced hydrophobicity, lowering depletion. In adsorption filled vacancies, further declining insights into comprehensive ores.

Язык: Английский

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Surface Modification of Fluorite During Hydrogen-Based Mineral Phase Transformation and its Effect on Collector Adsorption Behavior

Опубликована: Янв. 1, 2025

Язык: Английский

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Sulfur fixation performance of calcium-bearing carbonates in iron ore roasting process: Thermodynamics, phase transition, microstructure evolution, and kinetics

Process Safety and Environmental Protection, Год журнала: 2024, Номер 191, С. 2559 - 2571

Опубликована: Окт. 9, 2024

Язык: Английский

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