Refining Definition The final stage of metal production that removes impurities to produce high-purity metal suitable for commercial use. Related Terms Smelting Dore Bullion See Also Smelting Dore Related News Elmet to buy 4.99% interest in Masan High-Tech Materials for $2.5bn 2026-09-25 Sunshine Silver increases Idaho holdings by 14,100 acres 2026-09-22