新型组合捕收剂对锡石与方解石浮选分离的机理研究

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-05-28 DOI:10.1016/j.apt.2025.104942

Yonghong Xu , Lingyun Huang , Mei Zhang , Jianhan Zhou , Bo Hu , Louyan Shen , Jian Liu , Dandan Wu , Siyuan Yang

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引用次数: 0

摘要

锡石和方解石的浮选分离具有挑战性，因为它们具有相似的可浮性，需要创新的组合捕收剂来提高工艺效率和选择性。本文采用FeCl3合成对叔丁基苯羟肟酸（PTPA），制备了一种新型PTPA/FeCl3捕收剂。微浮选试验表明，单独使用PTPA可使SnO2回收率达到81.80%，CaO回收率达到45.87%，而PTPA/FeCl3可使SnO2回收率达到89.51%，CaO回收率达到27.02%，分离效果较好。接触角测量证实混合捕收剂增强了锡石的疏水性。SEM-EDS和XPS分析显示PTPA/FeCl3在锡石上有有效的化学吸附，PTPA和FeCl3形成稳定吸附的螯合物。方解石的吸附作用弱且不稳定。因此，混合捕收剂具有很强的捕收能力，对锡石的选择性比方解石高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Mechanism of a new combined collector for efficient flotation separation of cassiterite and calcite

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Mechanism of a new combined collector for efficient flotation separation of cassiterite and calcite

The challenging separation of cassiterite from calcite by flotation stems from their similar floatability, requiring innovative combined collectors to improve process efficiency and selectivity. Here, a novel PTPA/FeCl₃ collector was developed by synthesizing p-tert-butylphenylhydroxamic acid (PTPA) with FeCl₃. Microflotation tests showed that using PTPA alone yielded 81.80% SnO₂ and 45.87% CaO recoveries, whereas PTPA/FeCl₃ increased SnO₂ recovery to 89.51% while reducing CaO to 27.02%, demonstrating superior separation efficiency. Contact angle measurements confirmed enhanced cassiterite hydrophobicity from the mixed collector. SEM-EDS and XPS analyses revealed effective chemisorption of PTPA/FeCl₃ on cassiterite, where PTPA and FeCl₃ formed a stably adsorbed chelate complex. In contrast, calcite exhibited weak and unstable adsorption. The mixed collector thus combines strong collecting capability with high selectivity for cassiterite over calcite.

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)