Short- and long-term mitigation strategies for acid and metalliferous drainage control from iron ore mine wastes

铁矿石矿山废物中酸性和含金属排水控制的短期和长期缓解策略

• 批准号: LP140100399
• 负责人: Prof Christopher Saint
• 金额: $ 23.26万
• 依托单位: University of South Australia
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-28 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP140100399
• 关键词: Short; long; term; mitigation; strategies

Acid and metalliferous drainage from mine wastes, caused by oxidation of sulfide minerals, particularly pyrite, are a critical environmental issue worldwide. Although options to retard sulfide oxidation exist, including encapsulation methods, chemical additives and inhibition of iron-oxidising bacteria, these suffer from long-term instability. The project aims to investigate mechanistic approaches, using readily available mineralogical materials, to provide passivating conditions resulting in slowed oxidation rates. The project’s focus is on treatments for wastes from iron ore deposits which are of high economic significance to Australia. The outcome aims to be a treatment ‘pathway’ enabling practical waste rock treatment over the acid forming time-profile.

由硫化物矿物特别是黄铁矿氧化引起的矿山废弃物中的酸性和含金属废水是世界范围内的一个严重环境问题。虽然存在延缓硫化物氧化的选择，包括封装方法、化学添加剂和抑制铁氧化细菌，但这些都存在长期不稳定性。该项目旨在研究机械方法，使用容易获得的矿物材料，以提供钝化条件，从而减缓氧化速率。该项目的重点是处理铁矿床产生的废物，这对澳大利亚具有很高的经济意义。该成果旨在成为一种处理“途径”，使实际的废石处理的酸形成的时间配置文件。