Use of Advanced Customizable Leach Columns as a tool to characterize the physiochemical processes occurring in mine waste rock and tailings

使用先进的可定制浸出塔作为工具来表征矿山废石和尾矿中发生的物理化学过程

• 批准号: 576745-2022
• 负责人: Smith, LauraLA
• 金额: $ 4.81万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=749521
• 关键词: Use; Advanced; Customizable; Leach; Columns

Mining generates large amounts of waste (e.g. waste rock and tailings), some of which contains sulfide minerals that oxidize and produce acid rock drainage (ARD) when exposed to oxygen. Mine waste is commonly stored on-site in storage facilities which can account for > 80% of all ARD produced. Several methods exist to address ARD potential, but these tests are rarely linked to specific environmental conditions or repository designs. Advanced Customizable Leach Columns (ACLCs) can be used as a way to provide laboratory scale tests that replicate site specific conditions (e.g., temperature, oxygen availability, water content) can potentially offer a better prediction of ARD potential and inform design considerations for storage facilities. The goal of this research program is to increase our fundamental understanding of using lab-scale experiments to characterize and predict ARD production from mine waste by quantifying the role of different variables that control ARD production. Research outcomes are expected to immediately inform improved waste storage solutions on site by both NexGen and Imperial. The improvements, modifications, and discoveries will also be implemented in the new generation of ACLCs developed by Okane to offer to clients worldwide.

采矿产生大量废物（例如废物和尾矿），其中一些含有硫化物矿物质，可在暴露于氧气时氧化并产生酸性岩石排水（ARD）。地雷浪费通常在存储设施中存储，这些存储设施可能占所有产生的ARD的80％。有几种方法可以解决ARD潜力，但是这些测试很少与特定的环境条件或存储库设计相关。高级可定制的浸出柱（ACLC）可以用作提供实验室比例测试的一种方式，以复制现场特定条件（例如，温度，氧气，氧气，水含量）可能可以更好地预测ARD潜在的潜力并为存储设施提供信息。该研究计划的目的是通过量化控制ARD生产的不同变量的作用来提高我们对使用实验室规模实验来表征和预测ARD生产的基本理解。预计研究结果将立即为Nexgen和Imperial的现场改进的废物存储解决方案提供信息。在Okane开发的新一代ACLC中，还将实施改进，修改和发现，以向全球客户提供。