| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Edwards roaster | Mining | Furnace with series of horizontal stepped hearths each equipped with stirring rabbles. Used to sweet-roast or desulfurize pyritic concentrates, notably gold-bearing sulfides. Moist-to-wet feed progresses step by downward step, meeting hot gases produced toward discharge end from burning pyrite. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
