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Definition of Slag


  1. A product of smelting, containing, mostly as silicates, the substances not sought to be produced as matte or metal, and having a lower specific gravity than the latter; -- called also, esp. in iron smelting, cinder. The slag of iron blast furnaces is essentially silicate of calcium, magnesium, and aluminium; that of lead and copper smelting furnaces contains iron.
  2. To form, or form into, a slag; to agglomerate when heated below the fusion point.
  3. Same as Basic slag, above.
  4. The dross, or recrement, of a metal; also, vitrified cinders.
  5. The scoria of a volcano.
More "Slag" Quotations

Slag Translations

slag in French is suint
slag in German is Schlacke, Schlacke {f}, Asche {f}
slag in Swedish is slagg