Mechanism of Depression by Fe3+ During Hemimorphite Flotation

Liu, Junbo; Wen, Shuming; Feng, Qicheng; Zhang, Qian; Wang, Yijie; Zhou, Yonghong; Nie, Wenlin

doi:10.3390/min10090790

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…Generally, flotation process is a commercially pre-tratment that carried out prior pyrometallurgy or hydrometallurgy process to separate or upgrade the specific element. However, it is usually selected for low grade raw sulfide minerals [20][21][22]. Meanwhile, ferronickel slag is a by-product of smelting process that has complex oxide phases and high content of some elements such as magnesium and silica.…”

Section: Introductionmentioning

confidence: 99%

Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching

Prasetyo

Khaerul

Mayangsari

et al. 2021

J min metall B Metall

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A research using ferronickel slag, the by-product of ferronickel production, as raw material for magnesium extraction has been carried out. It is essential to upgrade the value of ferronickel slag instead of used directly for reclamation materials. Moreover, accumulation due to increasing ferronickel demand as well as environmental contamination due to various potencially toxic elements contained in the ferronickel slag could be prevented. The general objective of this study is to utilize the ferronickel slag for magnesium materials. The specific objective is to determine the optimum conditions of magnesium extraction in the process of alkali fusion followed by hydrochloric acid leaching. A novel method for magnesium extraction from ferronickel slag was carried out through reducing silica content followed by acid leaching method. Alkali fusion of the mixture of ferronickel slag and Na2CO3 at 1000 ?C for 60 minutes followed by water leaching at 100 ?C for 60 minutes with solid to liquid percentage of 20 % were carried out to separate the silica. The leaching residue resulted from water leaching was then leached using hydrochloric aid solution to extract magnesium. The leaching temperature and time as well as the hycrochloric acid concentration were varied in the acid leaching process. Alkali fusion process proved can be generated the sodium silicate that can be separated in the water leaching to the leached solution. Meanwhile, the leaching residue was leached using hydrochloric acid to extract the magnesium. The highest magnesium extraction percentage is 82.67% that resulted from an optimum acid leaching condition with temperature of 80 ?C for 30 minutes using 2M HCl solution. Based on the kinetics study, the activation energy (Ea) for the leaching reaction of magnesium at atmospheric pressure between 32?C to 80?C is 9.44 kJ/mol and affected by diffusion and chemical reactions.

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Section: Introductionmentioning

confidence: 99%

Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching

Prasetyo

Khaerul

Mayangsari

et al. 2021

J min metall B Metall

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Novel insight into the lead sulfide species formed on hemimorphite surface during lead ions improved sulfidation

Zhang

Deng

Wang

et al. 2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Selective Inhibition Mechanisms of Fe(III) in the Flotation of Lepidolite

Wang,

Liu,

Zhang

et al. 2024

Minerals

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Lepidolite, crucial for lithium extraction, is primarily processed through flotation. However, conventional flotation inhibitors pose environmental challenges. This study introduces Fe(III) as a selective and eco-friendly inhibitor in lepidolite flotation. We investigated its impact on flotation performance and interaction mechanisms with feldspar, quartz, and lepidolite. Adsorption studies revealed that dodecylamine (DDA) selectively adsorbs onto lepidolite when Fe(III) is present. Consistent contact angle and flotation results showed reduced hydrophobicity and recovery rates for feldspar and quartz, with minimal impact on lepidolite. Zeta potential measurements indicated lower potentials for feldspar and quartz compared to lepidolite. Notably, the addition of Fe(III) altered the isoelectric points of quartz and feldspar, suggesting stronger Fe(III) adsorption on these minerals. Infrared spectroscopy and X-ray photoelectron spectroscopy confirmed reduced DDA adsorption on feldspar and quartz surfaces due to Fe(III) adsorption, while DDA adsorption on lepidolite remained largely unaffected. The mechanism underlying Fe(III)’s selective inhibition on feldspar and quartz involves their more negative surfaces compared to lepidolite, which facilitates Fe(III) adsorption and inhibits DDA adsorption. This study offers insights into mechanisms relevant to systems using metal ions as depressants, providing valuable references for similar research.

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Mechanism of Depression by Fe3+ During Hemimorphite Flotation

Cited by 3 publications

References 18 publications

Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching

Magnesium extraction of ferronickel slag processed by alkali fusion and hydrochloric acid leaching

Novel insight into the lead sulfide species formed on hemimorphite surface during lead ions improved sulfidation

Selective Inhibition Mechanisms of Fe(III) in the Flotation of Lepidolite

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