Tailings consolidation mechanisms

尾矿固结机制

• 批准号: 491142-2015
• 负责人: Kantzas, Apostolos
• 金额: $ 1.72万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618255
• 关键词: Tailings; consolidation; mechanisms

The nature of tailing is such that they hold water and resist its expulsion. The focus of many tailing management technologies concentrates on their ability to promote water expulsion and clay "consolidation". With this project, the investigating team measures tailing structure and water expulsion as a function of external loading. Three non-destructive techniques are implemented: x-ray tomography measures density and porosity distribution; Magnetic Resonance Relaxometry measures water distribution in different pore sizes; Electromagnetic Sweeps measures conductive material interacting through conductivity and dielectric constant variability with EM frequency. The techniques are applied in standard tailings samples provided by AITF. The results are modelled using a kinetic model that incorporates the experimental findings.

尾矿的性质是，它们能保持水分，并能抵抗其排出。许多尾矿治理技术的重点都集中在其促进排水和粘土固结的能力上。在这个项目中，调查队测量了尾矿结构和排出水作为外部载荷的函数。实现了三种无损技术：X射线层析成像测量密度和孔隙率分布；磁共振弛豫法测量不同孔隙大小中的水分布；电磁扫描测量通过导电性和介电常数随电磁频率变化而相互作用的导电材料。该技术在AITF提供的标准尾矿样品中得到了应用。结果是用包含实验结果的动力学模型模拟的。