Smelting furnace
Smelting furnace means any furnace, reactor, or other type of vessel in which copper scrap and fluxes are melted to form a molten mass of material containing copper and slag.
Source
40 CFR § 63.11158
Scoping language
Terms used in this subpart are defined in the CAA, in 40 CFR 63.2, and in this section as follows: