Garnet in the flotation of fine-grained lepidolite: Strengthening role and action mechanism

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-25 DOI:10.1016/j.colsurfa.2025.136730

Zheyi Zhang , Chenyu Fan , Fen Jiao , Qian Wei

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Abstract

The flotation recovery of fine-grained lepidolite is crucial for the efficient utilization of lithium resources. This study investigated the strengthening effect of the hydrophilic mineral garnet on the flotation of fine-grained lepidolite and explored its mechanism from the perspectives of mineral dissolution and slurry rheology. The flotation results showed that garnet particles significantly enhanced the flotation recovery of fine-grained lepidolite, achieving a maximum recovery of 85.41 % under optimal conditions. The results of infrared spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses confirmed the absence of collector adsorption on garnet surfaces, eliminating competitive consumption of Dodecylamine(DDA)/Sodium dodecyl sulfonate (NaOl) reagents. The results of Zeta potential tests revealed that the ion dissolution on the surface of garnet increased the surface potential of lepidolite. Besides, the Al ions dissolved from the surface of garnet might promote the flotation of lepidolite. The rheological tests of the slurry demonstrated that under the combined action of the collector and coarse-grained garnet, the flocculation of fine-grained lepidolite was promoted, thereby strengthening the flotation recovery of fine-grained lepidolite. The findings provide novel approach and offers insights for optimizing the flotation process of fine-grained lepidolite.

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石榴石在细粒锂云母浮选中的强化作用及作用机理

细粒锂云母的浮选回收是锂资源高效利用的关键。研究了亲水矿物石榴石对细粒锂云石浮选的强化作用，并从矿物溶解和矿浆流变学的角度探讨了其作用机理。浮选结果表明，石榴石颗粒显著提高了细粒锂云石的浮选回收率，在最佳条件下，回收率最高可达85.41 %。红外光谱和x射线光电子能谱（XPS）分析结果证实，石榴石表面没有捕收剂吸附，消除了十二烷基胺(DDA)/十二烷基磺酸钠（NaOl）试剂的竞争性消耗。Zeta电位测试结果表明，离子在石榴石表面的溶解增加了锂云石的表面电位。此外，从石榴石表面溶出的Al离子可能促进锂云石的浮选。浆料流变试验表明，在捕收剂和粗粒石榴石的共同作用下，促进了细粒锂云石的絮凝，从而加强了细粒锂云石的浮选回收。研究结果为细粒鳞云石浮选工艺的优化提供了新的思路和思路。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.