For the Austrian municipality, see Droß. For the Venezuelan YouTuber, see Dross (YouTuber).
Dross is a mass of solidimpurities 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. For higher melting point metals and alloys such as steel and silver, oxidized impurities melt and float making them easy to pour off.
Aluminium dross
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.
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 lion's share and outsource the dross"; synonyms: corvée, hiding-to-nothing, and drudgery which are growing archaisms in business[5] (noun); as strong a term as dogsbody work
^Landes, David S. (1969). The Unbound Prometheus: Technological Change and Industrial Development in Western Europe from 1750 to the Present. Cambridge, New York: Press Syndicate of the University of Cambridge. p. 91. ISBN0-521-09418-6.
^Kogel, Jessica Elzea; Society for Mining, Metallurgy, and Exploration (2006), Industrial minerals & rocks: commodities, markets, and uses (7th ed.), SME, p. 1406, ISBN978-0-87335-233-8.{{citation}}: CS1 maint: multiple names: authors list (link)
dross, austrian, municipality, droß, venezuelan, youtuber, youtuber, mass, solid, impurities, floating, molten, metal, dispersed, metal, such, wrought, iron, forms, surface, melting, point, metals, such, lead, zinc, aluminium, alloys, oxidation, metal, higher,. For the Austrian municipality see Dross For the Venezuelan YouTuber see Dross YouTuber 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 For higher melting point metals and alloys such as steel and silver oxidized impurities melt and float making them easy to pour off Aluminium drossWith 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 slag which is a liquid Dross product is not entirely waste material for example aluminium dross can be recycled and is also used in secondary steelmaking for slag deoxidation 2 Contents 1 Etymology and usage 2 See also 3 References 4 External linksEtymology and usage editThe 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 lion s share and outsource the dross synonyms corvee hiding to nothing and drudgery which are growing archaisms in business 5 noun as strong a term as dogsbody workSee also editAluminium alloy inclusions SlagReferences edit Landes David S 1969 The Unbound Prometheus Technological Change and Industrial Development in Western Europe from 1750 to the Present Cambridge New York Press Syndicate of the University of Cambridge p 91 ISBN 0 521 09418 6 Kogel Jessica Elzea Society for Mining Metallurgy and Exploration 2006 Industrial minerals amp rocks commodities markets and uses 7th ed SME p 1406 ISBN 978 0 87335 233 8 a href Template Citation html title Template Citation citation a CS1 maint multiple names authors list link a b Dross www etymologyonline com Chambers s Etymological Dictionary of the English Language W amp R Chambers 1875 p 142 ISBN 9781402168093 dross en wiktionary orgExternal links edit nbsp Look up dross in Wiktionary the free dictionary AZoM com Aluminium Dross Recycling Herbert F Lund The McGraw Hill recycling handbook Chapter 37 23 United Kingdom European Union Directive Precipitates Aluminum Dross Recycling Retrieved from https en wikipedia org w index php title Dross amp oldid 1196142885, wikipedia, wiki, book, books, library,
