Recycling

Zinc Recycling: Current State and Potential

Recycling of Zinc from end-of-life products and manufacturing scrap represents an important secondary supply source. The current global end-of-life recycling rate for Zinc is approximately 25%, reflecting both technical challenges and economic factors in recovery.

Recycling Rate Context

With a recycling rate of 25%, Zinc 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 Zinc include mechanical separation, pyrometallurgical recovery, hydrometallurgical extraction, and direct recycling approaches. These processes mirror primary production techniques such as flotation concentration, adapted for secondary feedstocks. Research efforts focus on improving recovery rates and reducing energy consumption.

Key Recycling Sources

• End-of-life galvanizing steel and iron products - Recovery potential varies based on product design, Zinc concentration, and collection infrastructure.
• End-of-life die casting alloys products - Recovery potential varies based on product design, Zinc concentration, and collection infrastructure.
• End-of-life brass production products - Recovery potential varies based on product design, Zinc concentration, and collection infrastructure.
• End-of-life zinc oxide in rubber and ceramics products - Recovery potential varies based on product design, Zinc concentration, and collection infrastructure.
• End-of-life batteries and electronics products - Recovery potential varies based on product design, Zinc 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

Improving recycling rates for Zinc supports sustainability goals and long-term supply chain resilience, complementing efforts to diversify primary production sources. Regulatory frameworks such as extended producer responsibility and recycled content mandates are being developed in multiple jurisdictions.