Metal ions modified small molecule organic inhibitor to achieve efficient flotation separation of scheelite from calcite

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2024-07-05 DOI:10.1016/j.apt.2024.104557

Lidong Qiao , Liuyang Dong , Tianfu Zhang , Peilun Shen , Dianwen Liu

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Abstract

The flotation separation of scheelite from calcite is challenging due to their similar surface and solution chemistry properties, necessitating the use of efficient inhibitors. This study explored the mixed depressant of ferric ion and gallic acid for enhancing separation efficiency of scheelite and calcite. The flotation performance of scheelite and calcite was evaluated with varying ferric ion to gallic acid molar ratio (1:5), concentrations (2 × 10^-5 mol/L and 1 × 10^-4 mol/L), and a NaOL dosage of 1 × 10^-4 mol/L. The results indicated that scheelite achieved a recovery of 81 % while calcite recovery was 8.3 %. The mixed ore experiment proved that the addition of mixed depressant increased the grade of scheelite by 21.48 % (from 37.08 % to 58.56 %) compared with that of only the addition of the collector. The experiment showed that the mixed depressant had a good inhibition effect on calcite. Surface characterization analysis indicated that the mixed depressant exhibited a weak depressive effect on scheelite but effectively depressed calcite by enhancing gallic acid adsorption through iron ions promotion of calcite surfaces, thereby inhibiting sodium oleate enrichment. Therefore, this study confirmed the mixed depressant was an effective depressant for calcite flotation in scheelite flotation separation.

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金属离子修饰的小分子有机抑制剂实现白钨矿与方解石的高效浮选分离

由于白钨矿和方解石具有相似的表面和溶液化学性质，从它们中进行浮选分离具有挑战性，因此必须使用高效的抑制剂。本研究探索了铁离子和没食子酸的混合抑制剂，以提高白钨矿和方解石的分离效率。在不同的铁离子与没食子酸摩尔比（1:5）、浓度（2 × 10-5 mol/L 和 1 × 10-4 mol/L）以及 NaOL 剂量（1 × 10-4 mol/L）条件下，对白钨和方解石的浮选性能进行了评估。结果表明，白钨矿的回收率为 81%，方解石的回收率为 8.3%。混合矿石实验证明，与仅添加捕收剂相比，添加混合抑制剂可使白钨矿的品位提高 21.48%（从 37.08% 提高到 58.56%）。实验表明，混合抑制剂对方解石具有良好的抑制作用。表面表征分析表明，混合抑制剂对白钨矿的抑制作用较弱，但通过铁离子对方解石表面的促进作用增强了没食子酸的吸附，从而抑制了油酸钠的富集，有效地抑制了方解石。因此，本研究证实混合抑制剂是白钨矿浮选分离中方解石浮选的有效抑制剂。

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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.)