Improving the efficiency of the Albion leach processTM: the case for (1) elemental sulphur removal from residues, and (2) improved pyrite oxidation kinetics

提高 Albion 浸出工艺的效率：(1) 从残渣中去除元素硫，以及 (2) 改进黄铁矿氧化动力学的案例

• 批准号: 531189-2018
• 负责人: Ghahreman, Ahmad
• 金额: $ 4.61万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=719686
• 关键词: Improving; efficiency; Albion; leach; processTM; Improving; efficiency; Albion; leach; processTM

One of the challenges within the copper mining industry is the lack of an economically and environmentally viable hydrometallurgy process for the treatment of copper sulphide concentrates. The existing technology, pressure oxidation process, suffers from high operating and capital costs. The only commercial alternative to pressure oxidation options is the Albion process, which was commercialized for copper recovery in Africa in December 2017. However, the weakness of Albion with respect to copper treatment is the lack of options for gold recovery. The successful testing, optimization and integration of the processed process to the acidic Albion leach process will make the process more attractive for the treatment of gold-containing copper concentrates. This research proposal aims to develop two very important add-on technologies to improve the application of the Albion leach process for copper concentrates, as well as gold concentrates. Herein, it is proposed to apply a newly developed carbon based bead, AF 5, as a sulphur adsorbent, to remove the elemental sulphur form the acidic Albion leach processes to reduce its environmental impact and improve the gold recovery process efficiency.

铜矿开采行业的挑战之一是缺乏用于治疗铜硫化物浓缩物的经济和环境可行的水均能过程。现有的技术，压力氧化过程，遭受高运营和资本成本的影响。压力氧化选择的唯一商业替代方案是Albion工艺，该工艺在2017年12月在非洲进行了铜回收商业化。但是，阿尔比恩在铜处理方面的弱点是缺乏获得黄金回收的选择。 成功的测试，优化和整合到酸性阿尔比恩浸出过程将使该过程更具吸引力的含金铜浓缩液。该研究建议旨在开发两种非常重要的附加技术，以改善铜浓缩物以及金浓缩物的Albion Leach过程的应用。在此，建议将新开发的碳珠子AF 5作为硫吸附剂，以去除元素硫形成酸性albion浸出过程，以减少其环境影响并提高金恢复过程的效率。