Methodology for prediction of void ratio in thickened tailings deposition

浓缩尾矿沉积孔隙率预测方法

• 批准号: 385905-2009
• 负责人: Simms, Paul
• 金额: $ 4.01万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=463607
• 关键词: Methodology; prediction; void; ratio; thickened

The deposition of thickened tailings is an attractive alternative for mine waste management. Conventionally, tailings are deposited as a slurry, which requires the construction of very large dams. Unfortunately, these dams have often failed, resulting in economic and ecological devastation of the areas downstream. Thickened tailings eliminates this risk of catastrophic failure, by dewatering the tailings to the point that they exhibit some strength immediately after deposition, allowing them to be stacked at a gentle slope. The strength of the tailings may increase over time due to further densification from settling and desiccation. Sufficient desiccation has to happen in order for enough strength to develop to maintain stability of the stack.

浓缩尾矿的沉积是矿山废物管理的一个有吸引力的替代方案。传统上，尾矿作为泥浆沉积，这需要建造非常大的水坝。不幸的是，这些水坝往往失败，导致下游地区的经济和生态破坏。浓缩尾矿消除了这种灾难性故障的风险，方法是将尾矿脱水，使其在沉积后立即表现出一定的强度，从而使其能够以缓坡堆放。尾矿的强度可随着时间的推移而增加，这是由于沉降和干燥而进一步致密化。必须进行足够的干燥，以便形成足够的强度来保持电池堆的稳定性。