Dross

Dross is a

With wrought iron, hammering and later rolling remove some dross.^[1] With tin and lead the dross can be removed by adding sodium hydroxide pellets, which dissolve the oxides and form a slag. If floating, dross can also be skimmed off.

Dross, as a solid, is distinguished from

The term dross derives from the Old English word dros, meaning the scum produced when smelting metals (extracting them from their ores). By the 15th century it had come to refer to rubbish in general.^[3] Dregs,^[3] and the geological term druse are also thought to be etymologically related.^[4] Popular non-metalworking uses of the word are derogatory:

• poorly written or plagiarized journalism - "a dross article"; "utter/complete/terrible dross" (adjective/noun), a stronger term than filler
• undesirable, unprofitable work - "let's hone in on the
  drudgery which are growing archaisms in business^[5] (noun); as strong a term as dogsbody
  work

• Aluminium alloy inclusions
• Slag

References

External links

Look up dross in Wiktionary, the free dictionary.

• AZoM.com – Aluminium Dross Recycling
• Herbert F. Lund. The McGraw-Hill recycling handbook. Chapter 37.23:
  Aluminum "Dross" Recycling
  .