2613.10.00.00 - Roasted

This classification, HTS 2613.10.00.00, specifically covers molybdenum ores and concentrates that have undergone a roasting process. Roasting is a pyrometallurgical treatment that involves heating the ore or concentrate in the presence of air, typically to convert sulfides into oxides or to remove volatile impurities. The resulting product will have a significantly altered chemical composition and physical form compared to raw ore, preparing it for further metallurgical extraction of molybdenum.

It is important to distinguish this category from its sibling, HTS 2613.90.00.00, which covers "Other" molybdenum ores and concentrates. The crucial differentiator here is the roasting treatment. If the molybdenum ore or concentrate has not been subjected to this specific heat treatment in an oxidizing atmosphere, it would fall under the "Other" category. This distinction is critical for accurate customs declaration, as the roasting process implies a degree of industrial processing.

As this is a leaf node within the HTS structure, there are no further subcategories branching from HTS 2613.10.00.00. Therefore, the classification is precise and applies directly to any roasted molybdenum ores and concentrates. The key criterion for inclusion in this specific heading is the explicit evidence of a roasting process having been applied to the molybdenum-bearing material.