微细粒锂辉石聚团浮选动力学及界面反应性调控机制研究

微细粒矿物因质量小、动量低，浮选过程难以克服矿粒与气泡间的能垒而无法有效粘附于气泡上，导致微细粒矿产资源难以有效回收利用。本项目从提高微细粒矿物表观粒径与可浮性角度，以微细粒锂辉石为研究对象，以微细颗粒疏水聚团-适配流体环境构建-浮选界面反应性调控为核心，采用分析测试、浮选试验及量子化学计算模拟相结合，研究微细粒锂辉石聚团浮选动力学及界面反应性调控机制。明晰锂辉石及其组成矿物晶体化学与表面性质差异，揭示微细粒锂辉石聚团浮选行为及颗粒聚团动力学，建立锂辉石聚团行为与浮选行为的关联机制，解析锂辉石聚团浮选界面反应机理，构建捕收剂-金属离子-矿物水化表面共吸附模型，进行捕收剂固液界面分子组装亲固基设计，揭示新型捕收剂体系微细粒锂辉石聚团浮选行为、界面反应机理和适配的浮选流体环境，形成微细粒锂辉石聚团浮选界面反应性调控机制，为微细粒锂辉石及同类矿产资源的高效浮选回收提供理论基础和技术支撑。

It is difficult to break through the energy barrier between ore particles and bubbles in the flotation process, because of the small mass, and low momentum of fine minerals. Finally, it can not effectively adhere to the bubbles, which makes it difficult to effectively recycle the fine mineral resources. In this project, the micro fine spodumene is taken as the research object. From the perspective of improving the apparent particle size and flotability of fine particles, taking the hydrophobic agglomeration of fine-grained particles - the construction of suitable fluid environment - the interfacial reactivity regulation of flotation as the core, the flotation kinetics and interfacial reactivity regulation of agglomeration flotation of fine spodumene will be studied by combining analyzing tests, flotation test and quantum chemical calculation simulation. This project will clarify the differences of crystal chemistry and surface properties of spodumene and related minerals, reveal the agglomeration flotation behavior and agglomeration kinetics of fine spodumene, and establish the correlation mechanism between agglomeration behavior and flotation behavior of spodumene. By constructing the co-adsorption model of collector and metal ions on the hydration surface of mineral, the interfacial reaction mechanism of spodumene agglomeration flotation will be analyzed, and the molecular assembly design of collector affinity group at the solid-liquid interface will be carried out. Additionally, the flotation behavior, interfacial reaction mechanism and suitable flotation fluid environment will be revealed under the new collector system. Finally, the interfacial reactivity regulation of agglomeration flotation of fine spodumene will be established, which will provides theoretical basis and technical support for the efficient flotation recovery of micro fine spodumene and similar mineral resources.