MTM Critical Metals has announced significant progress in the recovery of Rare Earth Elements (REE) and critical metals from coal fly ash using its Flash Joule Heating (FJH) prototype. This innovative technology has demonstrated a more than 50% improvement in the acid leachability of these elements, which is a substantial increase compared to traditional acid leach methods.
The initial prototype testing, which scaled up 50 times from the original proof of concept developed at Rice University, also showed an increase in recovery rates for critical metals by up to 514%. This breakthrough indicates substantial potential for improving the efficiency and environmental impact of metal recovery processes.
MTM’s ongoing prototype testing includes exploring other waste sources of REE and critical metals, such as bauxite residue, electronic waste, and end-of-life lithium-ion batteries. This approach not only enhances recovery rates but also aligns with global sustainability efforts by focusing on recycling and repurposing materials. 
