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并阻止其排出。许多尾矿管理技术的重点集中在其促进排水和粘土“固结”的能力。通过该项目，调查团队测量了尾矿结构和排水量与外部载荷的函数关系。实施了三种无损技术：X 射线断层扫描测量密度和孔隙率分布；磁共振弛豫测量法测量不同孔径的水分布；电磁扫描测量导电材料通过电导率和介电常数变化与电磁频率的相互作用。该技术应用于 AITF 提供的标准尾矿样品。使用包含实验结果的动力学模型对结果进行建模。