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Highlights
- Advanced ore sorting boosts gold recovery efficiency
- Multi-step processing plan for better resource utilisation
- Strategic focus on long-term project scalability
Nova Minerals (ASX:NVA) has achieved a significant milestone in its Estelle gold project in Alaska by incorporating advanced sensor-based ore sorting technology. The move comes after extensive metallurgical test work at the RPM deposit, with the goal of optimising gold recovery while enhancing processing efficiency.
In collaboration with METS Engineering and Steinert Mining, Nova evaluated how sensor-based ore sorting could improve processing outcomes. The approach integrates ore sorting with heap leaching and carbon-based processing techniques, allowing the company to produce higher-grade concentrate while reducing processing volume. This innovation aligns with trends seen in other advanced mining operations and reflects the company’s commitment to delivering efficient and responsible resource development — a factor that strengthens its positioning among leading ASX mining stocks.
How the Technology Works
Higher-Grade Feed for Processing
The ore sorting process uses particle density x-ray transmission to analyse rock density, separating valuable minerals from waste before they enter the main processing stream. This pre-treatment reduces the amount of lower-grade material processed, cutting down on energy use and tailings, while increasing the grade of feed sent to the mill.
In practical terms, high-grade ore is sent directly to advanced processing circuits, while lower-grade ore benefits from heap leaching. The result is a streamlined process that maximises the value extracted from each tonne of material, while lowering operational costs.
Environmental and Economic Benefits
Removing waste rock early in the process supports more sustainable mining by reducing the environmental footprint of operations. This efficiency not only enhances gold recovery but also offers long-term economic benefits, making it a critical step in the overall development of the Estelle project.
Future Development Plans
Nova is advancing a comprehensive drilling program at Estelle to further define resources at RPM, Korbel, and the Stibium prospect, which also contains high antimony content. The company is also pursuing support from the US Department of Defence to accelerate development of its antimony resources — a move that could help strengthen supply security for this critical mineral.
With these initiatives, Nova Minerals continues to position itself as a forward-focused gold developer, building scalability into its project and working towards long-term value creation.
Frequently Asked Questions
- What is ore sorting technology in mining?
Ore sorting technology uses advanced sensors to separate valuable ore from waste rock before processing, improving efficiency and recovery rates. - Why is Nova Minerals using multiple processing methods?
Combining ore sorting, heap leaching, and carbon-based processing allows Nova to maximise recovery from both high and lower-grade ores, optimising overall project returns. - How does ore sorting benefit the environment?
By removing waste material early, ore sorting reduces the energy needed for processing, lowers tailings generation, and supports more sustainable mining practices.
