Ash and Residues Containing Metals or Metallic Compounds (NESOI)

Vanadium-bearing residues (2620991000), high-titanium slag (2620995000), silver-content residues (2620997560), and other miscellaneous metal-bearing ashes (2620998500, 2620998550) fall under this catch-all heading for secondary metallurgical materials not captured by more specific headings. High-titanium slag — classified here when titanium content exceeds 40 percent and copper, lead, or zinc content is below the recovery threshold — is a critical feedstock for titanium dioxide pigment producers. South Africa and Norway are the leading suppliers, with Canada, Mexico, and Suriname also contributing, reflecting the geographic concentration of vanadium and titanium smelting capacity.