Strategy to kill two birds with one stone: Contribution of hydrogen-based mineral phase transformation on enhancing the grinding and flotation characteristics of bastnaesite and fluorite

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-06-16 DOI:10.1016/j.psep.2025.107464

Pengcheng Tian , Jian Zhang , Peng Gao , Zhidong Tang , Yanjun Li , Yuexin Han

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引用次数: 0

Abstract

The close symbiotic relationship between bastnaesite and fluorite complicates their separation. In this study, Hydrogen-based Mineral Phase Transformation (HMPT) is introduced as a novel technology to enhance the grinding efficiency and selective flotation characteristics of bastnaesite and fluorite. The effects of HMPT on the grinding and separation characteristics of these two minerals were evaluated through grinding and flotation tests. The mechanisms by which HMPT affects mineral properties was elucidated using grinding kinetic model, contact angle measurement, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and other methods. The results indicate that HMPT treatment improves the grinding efficiency of bastnaesite more significantly than that of fluorite. After HMPT treatment, the surface hydrophilicity of bastnaesite increased, and noticeable cracks and holes formed, which enhanced bastnaesite’s adsorption capacity for the collector and improved the separation of bastnaesite and fluorite. This provides a new technical theory for the efficient recovery of rare earth elements.

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一举两得的策略：氢基矿物相变对提高氟碳石和萤石磨矿和浮选特性的贡献

氟碳石和萤石之间密切的共生关系使它们的分离复杂化。采用氢基矿物相变（HMPT）技术提高氟碳石和萤石的磨矿效率和选择性浮选性能。通过磨矿和浮选试验，评价了HMPT对这两种矿物磨矿和分离特性的影响。利用磨矿动力学模型、接触角测量、傅里叶变换红外光谱、x射线光电子能谱等方法，阐明了HMPT影响矿物性质的机理。结果表明：HMPT处理对氟碳石的磨矿效率的提高明显高于对萤石的磨矿效率。HMPT处理后氟碳铈矿表面亲水性增强，形成明显的裂缝和孔洞，增强了氟碳铈矿对捕收剂的吸附能力，改善了氟碳铈矿与萤石的分离。这为稀土元素的高效回收提供了新的技术理论。

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.