Developments in Continuous VAT Leaching

The chapter addresses the challenges of traditional vat leaching methods, which have been limited by high operational costs and labor intensity, while proposing the Mackie Vat Leaching Jig (MVLJ) as a promising alternative. The objective is to explore enhancements in leaching efficiency, utilizing both bench and pilot-scale testing to evaluate the MVLJ's performance compared to conventional methods. This study employs experimental tests conducted in controlled environments, focusing on fluid dynamics and the behavior of leach solutions through ore beds in order to derive optimal operating conditions. Results demonstrate that the MVLJ's design facilitates improved fluidization and enhanced recovery rates, addressing the historically low success rates of batch methods and highlighting the potential for reduced costs and heightened efficiency in field applications. Such advancements not only contribute to the mining sector's operational viability but also align with increasing regulatory requirements for effluent and spent heap leach pad management, showcasing a significant step forward in continuous vat leaching technology.