Exciting Advances in Gold Recovery Techniques by Nova Minerals
Exciting Developments in Gold Recovery at RPM
Nova Minerals Limited (“Nova”) (NASDAQ: NVA) is thrilled to share impressive results from the RPM gold feasibility metallurgical test work. This ongoing program exhibits exceptional gold recoveries, indicating promising opportunities for further optimization.
Key Highlights from the Test Program
The RPM conceptual flowsheet illustrates a clear path to achieving high gold recoveries. Noteworthy points include:
- High-grade ore processed directly through the carbon in pulp (CIP) and carbon in leach (CIL) circuits serves to maximize gold recovery.
- For lower-grade ore below 2 g/t Au, a successful 1,000 kg bulk test demonstrated an upgrade from 1.32 g/t Au to 5.72 g/t Au—an increase of over four times in a single pass.
- Lower-grade ore that is rejected by the sorter may undergo heap leaching, showing potential recoveries as high as 68.7%.
- Advanced sorting technology is expected to enhance high-grade feed volumes, optimizing resource utilization and maximizing overall ore body value.
- Ongoing work on CIP/CIL processing and high-pressure grinding rolls (HPGR) is aimed at further refining these processes for optimal efficiency.
CEO Insights
Nova CEO, Mr. Christopher Gerteisen, expressed enthusiasm about the test results, emphasizing their significance in showcasing the RPM deposit's quality. He noted that the ability to extract a considerable amount from lower-grade materials marks a remarkable technical achievement.
Moreover, combining heap leaching with innovative ore sorting methods could define a new, leading-edge strategy in gold recovery, reducing costs while enhancing gold production. As more tests yield positive results, Nova anticipates that Estelle could evolve into a robust, long-term gold-producing district.
Revolutionizing Ore Sorting Technology
The use of particle density X-ray transmission (XRT) technology offers a proven approach to enhance ore sorting prior to processing. By leveraging X-rays to analyze ore density, Nova effectively separates valuable minerals from waste rock. This innovative technique minimizes energy consumption and tailings generation, resulting in a more sustainable mining operation.
With XRT technology, raw ore is efficiently scanned and sorted to maximize high-grade material while reducing processing costs and environmental impact. This advanced automatic sorting method enables Nova to realize significant efficiencies within their operational framework.
Heap Leaching Efficiencies
Heap leaching has emerged as a favorable method for extracting gold from lower-grade ores, significantly reducing capital and operational costs. This approach is already utilized by major players in the industry, recognizing the potential it holds for recovering substantial volumes of gold previously regarded as waste.
The typical heap leach operation involves stacking crushed ore on an impermeable pad, where a leaching agent is applied to dissolve gold over time. This process not only enhances gold production but also expedites cash flow and lowers capital expenses, making it an appealing strategy for Nova.
Conceptual Flowsheet for Enhanced Recovery
Encouraging results have led Nova to devise a high-level conceptual flowsheet that incorporates the benefits of ore sorting, heap leaching, and CIP/CIL processing. This comprehensive strategy aims to transform lower-grade RPM mined ore into high-grade concentrates, maximizing recoverability.
The refined approach anticipates that additional engineering and economic studies will unveil the optimal processing plant size for an efficient operation. This foresight and planning outline the roadmap to enhanced performance and profitability for the Estelle project.
About Nova Minerals Limited
Nova Minerals Limited is focused on exploring and developing critical mineral deposits including gold and antimony. Their ambitious Estelle Project spans 514 km² of mining claims across a mineralized corridor showcasing over 20 advanced gold and antimony prospects. The project is strategically located within the renowned Tintina Gold Belt, known for its significant gold deposits and rich mining history.
For further insights into the Estelle project and how Nova Minerals plans to advance its initiatives, additional resources and interactive materials are available on the company’s official website.
Frequently Asked Questions
What are the main highlights of Nova's recent test work?
The main highlights include exceptional gold recoveries from both high-grade and lower-grade ores, utilizing innovative ore sorting and heap leaching technologies.
How does heap leaching work?
Heap leaching involves stacking crushed ore on a pad and applying a leaching agent which dissolves gold, providing a cost-effective method for recovering gold from low-grade sources.
What is the significance of the ore sorting technology?
The ore sorting technology allows Nova to separate valuable minerals from waste, increasing the average grade of processed ore and improving overall efficiency.
Where is the Estelle Project located?
The Estelle Project is situated within the Tintina Gold Belt, renowned for its rich gold deposits and significant mining activity.
What are Nova's future prospects?
With ongoing advancements in processing techniques and a strong resource base, Nova aims to position itself as a leading gold producer in the North American market.
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