What is it about?
Mining produces large amounts of waste material called tailings, which are often stored with significant quantities of water in large containment facilities. If these facilities fail, the consequences for people and the environment can be devastating. Our article explores filtered tailings, a technology that removes much of the water before the material is stored in dry stacks. This approach can help recover water for reuse, reduce the land required for storage, and improve safety. We explain how mining companies can move from laboratory tests to pilot plants, demonstration plants, and finally full industrial operations. The goal is to show why each stage is essential to identify problems early and ensure that this technology can operate reliably and safely at a very large scale.
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Why is it important?
The importance of this work lies in addressing one of the mining industry's major challenges: managing tailings while reducing environmental impacts and operational risks. Although filtered tailings offer important potential benefits, implementing this technology at very large production rates is not simply a matter of installing larger equipment. Our review brings together technical knowledge and practical considerations into a structured, four-stage pathway for scaling up the technology. It highlights the need to validate water recovery, energy consumption, equipment reliability, maintenance, and material handling before committing to full industrial implementation. This approach can help mining companies make better-informed investment decisions, reduce uncertainty, and develop more responsible tailings management strategies. It is particularly relevant as the industry seeks to conserve water, improve safety, and strengthen public confidence in mining operations.
Perspectives
As a mining engineer with extensive experience in mining operations, I believe that innovation in tailings management must go hand in hand with safety, environmental responsibility, and operational reliability. Filtered tailings technology offers promising opportunities, but its successful implementation requires more than technological advances, it requires careful planning, testing, and learning at every stage. For me, one of the key messages of this publication is that decisions about large-scale implementation should be based on reliable operational evidence rather than assumptions alone. I hope this work contributes to the exchange of knowledge between researchers and mining professionals and encourages the industry to evaluate more sustainable and safer approaches to tailings management.
Alex Marinovic
Universidad Privada del Norte
Read the Original
This page is a summary of: Large-Scale Filtered Tailings Storage: Challenges and Pathways for Technology Scale-Up, Minerals, October 2026, MDPI AG,
DOI: 10.3390/min16101072.
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