Bio-Oxidized Gold Ore Residue from Japan
A residue from bio-oxidation pretreatment of refractory sulfide gold ores, exposing gold for cyanidation. Classified under 2616.90.00 as an advanced processing intermediate, with gold content reported statistically.
Duty Rate — Japan → Canada
0%
Import Tips
• Confirm the residue is not considered ash or slag, which may fall under heading 26.20
• Ensure the bio-oxidation process is documented as normal to the metallurgical industry
• Provide assay results to support the gold content declaration