Separation and Recovery Technology for Mineral Flotation and Solid Waste

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Separation Engineering".

Deadline for manuscript submissions: 10 May 2025 | Viewed by 634

Special Issue Editors


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Guest Editor
College of Mining Engineering, Taiyuan University of Technology, Taiyuan, China
Interests: mineral separation processes and theories; flotation theory; colloid and interfacial physical chemistry

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Guest Editor
School of Chemical Engineering, China University of Mining and Technology, Xuzhou, China
Interests: coal flotation; efficient enrichment of microcrystalline graphite; resource utilization of waste lithium-ion batteries; waste aluminum electrolysis cathodes
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Special Issue Information

Dear Colleagues,

The advancement of separation and recovery technology for mineral flotation and solid waste is gaining significant attention in both academia and industry. Recent advancements in flotation techniques, including the development of novel reagents and the optimization of process parameters, have shown great promise in improving separation efficiency and selectivity. Understanding the underlying principles and mechanisms of flotation is essential for further innovation and implementation in both industrial and laboratory settings. This area of research not only addresses the challenges of resource recovery but also emphasizes sustainable practices and waste reduction. Innovative methods and optimized processes are essential to enhance separation efficiency and ensure minimal environmental impact. The evaluation of separation techniques through rigorous analytical approaches is crucial for understanding their effectiveness and scalability.

Therefore, I am delighted to invite you to submit your research articles, communications, or reviews to this Special Issue focused on the latest developments in separation technologies for mineral flotation and the recovery and utilization of solid waste.

Dr. Yujin Sun
Dr. Xiangning Bu
Guest Editors

Manuscript Submission Information

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Keywords

  • separation technology
  • mineral flotation
  • coal-based waste
  • resource recovery
  • sustainable practices
  • environmental impact
  • adhesion force
  • novel reagents
  • bubble–particle
  • wetting

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Published Papers (1 paper)

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Research

13 pages, 9286 KiB  
Article
Investigations into Effects of Inclined Channels on the Forced Foam Drainage
by Yumeng Deng, Miao Jin, Lisha Dong, Jiakun Tan and Chao Ni
Separations 2025, 12(2), 43; https://doi.org/10.3390/separations12020043 - 8 Feb 2025
Viewed by 376
Abstract
Gangue particle entrainment during flotation remains a significant challenge in mineral processing. Previous studies have shown that incorporating inclined plates into the froth zone can reduce the recovery of fine gangue particles. However, the effects of inclined channels on froth drainage have not [...] Read more.
Gangue particle entrainment during flotation remains a significant challenge in mineral processing. Previous studies have shown that incorporating inclined plates into the froth zone can reduce the recovery of fine gangue particles. However, the effects of inclined channels on froth drainage have not been fully investigated. This study employed a custom-designed forced drainage system to systematically examine the impact of inclined channels on foam drainage and the underlying mechanisms. Results revealed that, at an SDS solution injection flow rate of 36 mL/min and an inclined channel angle of 30°, the foam drainage velocity in the inclined channel was significantly higher than that in the vertical channel for both two-phase and three-phase foams. This advantage became more pronounced as the SDS injection flow rate increased. A new drainage pathway formed between the inclined wall and the foam, facilitating faster liquid flow than within the foam structure. This mechanism was identified as the primary factor enhancing foam drainage velocity in inclined channels. These findings demonstrate that inclined channels can effectively improve foam drainage efficiency compared to vertical channels, providing valuable insights for optimizing froth zone structure. Full article
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