Research on Extraction Technology, Separation Methods and Metal Recovery

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

Deadline for manuscript submissions: closed (20 April 2023) | Viewed by 1770

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School of Metallurgy and Environment, Central South University, Changsha 410083, China
Interests: nonferrous metallurgy; clean metallurgy; waste treatment and environment protection; resource recycling; solvent extraction
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Special Issue Information

Dear Colleagues,

Mineral resources are an essential material basis for world economic and social development and are non-renewable resources. With the depletion of high-grade and easy-to-exploit mineral resources, developing economic, effective, green, and low-energy-consumption low-grade complex mineral resources or secondary resource separation and utilization technology has attracted worldwide attention. The object of mineral processing has expanded from natural mineral resources to secondary resource recovery and utilization. All kinds of solid waste, such as tailings, slag, fly ash, metal, electrical, plastic, domestic, and even soil, have become processing objects, which are processed and converted into valuable resources. This Special Issue aims to explore the green and intelligent development of mineral processing, sorting, and mineral essential metal extraction theory and technology and promote technological innovation in the field of mineral resources processing and utilization.

This Special Issue covers basic and applied research in the technical fields of mineral separation theory and technology, mineral processing equipment and intelligence, mining and metallurgy environmental protection, urban mines, secondary resource recycling, process mineralogy and analysis, mineral materials, beneficiation–metallurgy combination, surface chemistry, mineral processing technology, metal extraction and separation, bioleaching, and comprehensive utilization of hazardous solid waste/tailings.

Prof. Dr. Yongming Chen
Guest Editor

Manuscript Submission Information

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Keywords

  • mineral processing
  • mineral separation
  • process mineralogy
  • surface chemistry
  • metal extraction
  • elements separation
  • leaching
  • minerals materials
  • hazardous waste
  • intelligent equipment

Published Papers (1 paper)

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Research

12 pages, 2272 KiB  
Article
Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium
by Junjie Xie, Kang Li, Zhuonan Shi, Changli Min, Shina Li, Zichen Yin and Ruixin Ma
Separations 2023, 10(1), 42; https://doi.org/10.3390/separations10010042 - 9 Jan 2023
Cited by 1 | Viewed by 1560
Abstract
Solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium. A solution containing a high K+ concentration (exceeding 80 g/L), which was ultra-salty, with about 200 g/L alkali metal ions, was used to [...] Read more.
Solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium. A solution containing a high K+ concentration (exceeding 80 g/L), which was ultra-salty, with about 200 g/L alkali metal ions, was used to extract Rb+ and Cs+. The effects of the process parameters on the separation of cesium and rubidium were systematically studied. The optimum conditions were as follows: NaOH concentration of 0.5 mol/L, t-BAMBP concentration of 1 mol/L (in sulfonated kerosene), organic/aqueous volume ratio (O/A ratio) of 3:1, and contact time of 1 min. The extraction rates of cesium and rubidium were 99.81 and 98.09%, respectively, and 19.31% of potassium was co-extracted in the organic phase after five-stage countercurrent extraction. About 99.32% of K+ in the organic phase could be removed after five-stage countercurrent scrubbing with deionized water at an O/A ratio of 2:1 for 2 min. When 0.5 mol/L hydrochloric acid solution was used as detergent, almost all of the cesium and rubidium (>99%) could be recovered by two-stage countercurrent stripping at an O/A ratio of 3:1 for 2 min. A solid compound was found and collected from the organic phase during multi-stage solvent extraction. Its composition and structure were determined by XRD, infrared Fourier-transform, and ICP-MS. Full article
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