Zinc Electrolyte Purification Sludge Lead Content
Sludge residue from purifying electrolytes in zinc electrowinning plants, mainly zinc compounds with lead and arsenic. Used for recovering metals or manufacturing their compounds. HTS 2620.19.60.20 applies to this lead-bearing zinc slag per chapter definitions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other roasting/clacining residues not mainly zinc
Heading 2617 for non-zinc specific roasting residues containing metals.
If extracted molybdate compounds
If processed to isolate specific metal molybdates, moves to Chapter 28.
If from lead/zinc smelting but classified as hard zinc spelter
Specific spelter form under 2621 for certain zinc residues.
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Import Tips & Compliance
• Include electrowinning process description in entry docs to confirm Heading 2620 eligibility
• Report lead content via assay without deductions; mismatches trigger audits
• Segregate from iron-bearing sludges to avoid Chapter 72 reclassification
Related Products under HTS 2620.19.60.20
Zinc Smelter Lead-Bearing Slag
Residue from zinc smelting operations containing primarily zinc with significant lead content and arsenic traces, used for metal recovery. Classified under HTS 2620.19.60.20 due to its main zinc composition and lead content as specified in the subheading. Excludes iron/steel slags and municipal waste ash per chapter notes.
Roasted Zinc Ore Leaching Residue with Lead
Ash-like residue from hydrometallurgical leaching of roasted zinc ores, mainly zinc with lead compounds and arsenic. Used in industry for extracting residual metals or chemical compounds. Fits HTS 2620.19.60.20 for zinc-mainly residues with lead content, per chapter note (a).
Flue Dust from Zinc Galvanizing Furnace Lead
Collected flue dust from zinc galvanizing furnaces, primarily zinc oxides with lead and arsenic impurities, for metal extraction. Non-ferrous residue qualifies under HTS 2620.19.60.20 due to zinc main content and lead.
Zinc Die Casting Residue Ash Lead Bearing
Ash and dross from zinc die casting operations, predominantly zinc with lead impurities and arsenic, for metal recovery. Fits chapter note (a) under HTS 2620.19.60.20 as industrial non-ferrous residue with lead.
Waelz Kiln Zinc Oxide Residue with Lead
Residue from Waelz process kilns recovering zinc from electric arc furnace dust, mainly zinc oxide with lead and arsenic. Used for further metal or compound production; HTS 2620.19.60.20 for lead content.
Secondary Zinc Recycling Ash with Lead Impurities
Ash from recycling scrap zinc materials, predominantly zinc with lead and arsenic compounds, destined for metal reclamation. Classified in HTS 2620.19.60.20 for its zinc-main composition and lead content in non-iron/steel residues.