Lyotropic ion effects in interfacial phenomena in mineral processing

矿物加工中界面现象中的溶致离子效应

• 批准号: 261199-2007
• 负责人: Pawlik, Marek
• 金额: $ 1.92万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=394900
• 关键词: Lyotropic; ion; effects; interfacial; phenomena

The physicochemical methods of mineral processing, such as froth flotation, rely on several related interfacial phenomena occurring at the mineral-solution interface. Polymer and surfactant adsorption, surface charging, particle-air bubble attachment, and aggregation/dispersion of particles are known to be a function of pH and ionic strength. While the term ionic strength has traditionally been used to denote the total electrolyte concentration in processing water, it does not take into account some specific effects, commonly referred to as lyotropic effects, that result from differences in ionic sizes.

矿物加工的物理化学方法，如泡沫浮选，依赖于矿物-溶液界面上发生的几种相关的界面现象。聚合物和表面活性剂的吸附、表面电荷、颗粒-气泡附着以及颗粒的聚集/分散都是pH和离子强度的函数。虽然离子强度这一术语传统上被用来表示处理水中的总电解质浓度，但它没有考虑由于离子大小的差异而产生的一些特定的影响，通常被称为溶致效应。