对不同尾矿管理方案进行成本比较的综合方法

A. Carneiro, A. Fourie
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引用次数: 4

摘要

越来越多的人期望矿业公司以更可持续的方式经营,在改善废物管理和减少环境影响方面有强有力的商业案例。随着尾矿管理受到越来越多的审查,决策者被敦促采取一种强有力的方法来选择尾矿管理策略,包括关闭设计,以及降低灾难性大坝失效风险的领先实践,优化资源利用,减轻对气候变化的环境影响。综合分析,考虑经济、环境、社会和风险方面的操作,因此可以为决策者提供平衡的信息,以确保正确的项目以最佳的商业案例进行,从而可以选择最具成本效益的解决方案,而不是外部化成本。然而,文献综述表明,传统的经济比较评价方法存在根本缺陷。本文报道了对不同情景下尾矿管理方案的生命周期成本分析。审议了在西澳大利亚作为浆料、增稠或过滤后的尾矿处置金尾矿的概念性案例研究。这样做是为了检查潜在隐藏成本对项目总成本的影响程度。建议所提出的方法将导致选择一种确保良好的经济、环境和社会效益的尾矿管理替代方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An integrated approach to cost comparisons of different tailings management options
There are growing expectations of mining companies to operate in a more sustainable manner, with a strong business case for improving waste management and reducing environmental impacts. As the stewardship of tailings come under increasing scrutiny, decision-makers are urged to adopt a robust approach to the selection of a tailings management strategy that encompasses design for closure, and leading practices to lower the risk of catastrophic dam failures, optimise the use of resources, and mitigate environmental impacts on climate change. An integrated analysis, considering economic, environmental, social, and risk aspects of the operation can therefore provide decision-makers with balanced information to ensure the right projects proceed with an optimal business case so that the most cost-effective solution, that does not externalise costs, can be selected. However, literature review revealed that fundamental shortcomings exist within traditional evaluation approaches used for economic comparisons. This paper reports on life cycle cost analyses conducted for comparing various tailings management options under different scenarios. A conceptual case study for the disposal of gold tailings in Western Australia as a slurry, as thickened, or as filtered tailings, was considered. This was done for examining the extent to which potentially hidden costs impact on the total cost of a project. It is suggested that the proposed approach will lead to selection of a tailings management alternative that ensures sound economic, environmental, and social performance is achieved.
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