slag furnace

1 definition found

slag furnace - Collaborative International Dictionary of English v.0.48 :

  Slag \Slag\ (sl[a^]g), n. [Sw. slagg, or LG. slacke, whence G.
     schlacke; originally, perhaps, the splinters struck off from
     the metal by hammering. See Slay, v. t.]
     1. The dross, or recrement, of a metal; also, vitrified
        cinders.
        [1913 Webster]
  
     2. The scoria of a volcano.
        [1913 Webster]
  
     3. (Metal.) 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.
        [Webster 1913 Suppl.]
  
     Slag furnace, or Slag hearth (Metal.), a furnace, or
        hearth, for extracting lead from slags or poor ore.
  
     Slag wool, mineral wool. See under Mineral.
        [1913 Webster]