2620.19 - Other:

This HTS category, 2620.19, encompasses other ash, residues, and slag containing arsenic or metals or their compounds, specifically those not falling under the "hard zinc spelter" classification (2620.11). It broadly includes various waste materials from industrial processes that, while not primarily iron or steel related, possess significant metallic content. The key defining characteristic is the presence of metals or their compounds, particularly zinc in this instance, within these residual materials.

Distinguishing itself from its sibling, 2620.11 (Hard zinc spelter), this category covers a broader range of zinc-containing residues that do not meet the specific definition or market acceptance of hard zinc spelter. Hard zinc spelter is a specific grade of zinc alloy produced in the smelting process, whereas 2620.19 captures other less refined or more varied forms of zinc-containing waste.

The subcategories within 2620.19 further refine the classification based on the specific form and nature of the zinc-containing residues. 2620.19.30.00 specifically addresses zinc dross and zinc skimmings, which are distinct byproducts of galvanizing and other zinc coating processes. The remaining "Other" category, 2620.19.60, is a residual classification for any other zinc-bearing ash, slag, or residue that does not fit into the more specific subcategories, requiring careful analysis of their composition and origin.