Roasting Definition: Roasting is a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to a free metal.
Example: Roasting ZnS may yield ZnO; roasting HgS may yield free Hg metal.
Roasting Definition in Chemistry
![Roasting is the name given to the heating of a metal sulfide ore.](https://cdn.statically.io/img/www.thoughtco.com/thmb/FTjB3KNpZ3sF8bDhLqR7BMk_eXw=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/gold-bar-172752945-59765b8dd963ac00105c4e74.jpg)