Dross

Dross is a mass of solid impurities floating on a molten metal or dispersed in the metal, such as in wrought iron. It forms on the surface of low-melting-point metals such as tin, lead, zinc or aluminium or alloys by oxidation of the metal(s).With wrought iron, hammering and later rolling removed some dross. With tin and lead the dross can be removed by adding sodium hydroxide pellets, which dissolve the oxides and form a slag. Dross can also be skimmed off. Dross, as a solid, is distinguished from slag, which is a liquid. Dross product is not entirely waste material; aluminium dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.
Posts about Dross
  • (Dis)Content Marketing: How To Survive The Shakeout

    … content that it can be hard for an audience to spy the gold amid the dross. When there’s an overload of material, when delight in variety turns into jadedness, “consumption fatigue” can even diminish the attraction of the good stuff. Ever sat in front of the TV, scanning through hundreds of channels, and heard the words “there’s nothing to watch” slip…

    Steve Dille/ Marketing Landin EMail Content How To's- 21 readers -