Recycling

Magnesium Recycling: Current State and Potential

Recycling of Magnesium from end-of-life products and manufacturing scrap represents an important secondary supply source. The current global end-of-life recycling rate for Magnesium is approximately 33%, reflecting both technical challenges and economic factors in recovery.

Recycling Rate Context

With a recycling rate of 33%, Magnesium recovery is moderate but has significant room for improvement. Collection infrastructure and processing economics are the primary constraints on higher recovery rates.

Recycling Technologies

Current and emerging recycling technologies for Magnesium include mechanical separation, pyrometallurgical recovery, hydrometallurgical extraction, and direct recycling approaches. These processes mirror primary production techniques such as pidgeon process (silicothermic reduction), adapted for secondary feedstocks. Research efforts focus on improving recovery rates and reducing energy consumption.

Key Recycling Sources

• End-of-life aluminum alloy production products - Recovery potential varies based on product design, Magnesium concentration, and collection infrastructure.
• End-of-life automotive die casting products - Recovery potential varies based on product design, Magnesium concentration, and collection infrastructure.
• End-of-life steel desulfurization products - Recovery potential varies based on product design, Magnesium concentration, and collection infrastructure.
• End-of-life aerospace components products - Recovery potential varies based on product design, Magnesium concentration, and collection infrastructure.
• End-of-life refractory materials products - Recovery potential varies based on product design, Magnesium concentration, and collection infrastructure.
• Manufacturing scrap - New scrap from fabrication and processing typically has the highest recovery rates due to known composition and controlled collection.

Circular Economy Opportunities

Given the high supply risk for Magnesium, developing robust recycling infrastructure is a strategic priority. The 85% concentration of primary production in China makes secondary supply from recycling an important hedging strategy for consuming nations. Regulatory frameworks such as extended producer responsibility and recycled content mandates are being developed in multiple jurisdictions.