flash smelting definition, flash smelting meaning | English dictionary

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flash smelting


      n   a smelting process for sulphur-containing ores in which the dried and powdered ore, mixed with oxygen, is ignited on discharge from a nozzle, melts, and drops to the bottom of a settling chamber. Sulphur is released mainly in its solid form, thus reducing atmospheric pollution  
English Collins Dictionary - English Definition & Thesaurus  
1    a sudden short blaze of intense light or flame  
a flash of sunlight     
2    a sudden occurrence or display, esp. one suggestive of brilliance  
a flash of understanding     
3    a very brief space of time  
over in a flash     
4    an ostentatious display  
a flash of her diamonds     
5      (Also called)    newsflash   a short news announcement concerning a new event  
6      (Also called)    patch     (Chiefly Brit)   an insignia or emblem worn on a uniform, vehicle, etc., to identify its military formation  
7    a patch of bright colour on a dark background, such as light marking on an animal  
8    a volatile mixture of inorganic salts used to produce a glaze on bricks or tiles  
a    a sudden rush of water down a river or watercourse  
b    a device, such as a sluice, for producing such a rush  
10      (Photog, informal)      short for       flashlight       2       flash photography  
11    a ridge of thin metal or plastic formed on a moulded object by the extrusion of excess material between dies  
12      (Yorkshire and Lancashire)  
dialect   a pond, esp. one produced as a consequence of subsidence  
13    modifier   involving, using, or produced by a flash of heat, light, etc.  
flash blindness, flash distillation     
14    flash in the pan   a project, person, etc., that enjoys only short-lived success, notoriety, etc.  
15    Informal   ostentatious or vulgar  
16    Informal   of or relating to gamblers and followers of boxing and racing  
17    sham or counterfeit  
18    Informal   relating to or characteristic of the criminal underworld  
19    brief and rapid  
flash freezing     
20    to burst or cause to burst suddenly or intermittently into flame  
21    to emit or reflect or cause to emit or reflect light suddenly or intermittently  
22    intr   to move very fast  
he flashed by on his bicycle     
23    intr   to come rapidly (into the mind or vision)  
24    intr; foll by: out or up   to appear like a sudden light  
his anger really flashes out at times     
a    to signal or communicate very fast  
to flash a message     
b    to signal by use of a light, such as car headlights  
26    tr  
Informal   to display ostentatiously  
to flash money around     
27    tr  
Informal   to show suddenly and briefly  
28    intr     (Brit)  
slang   to expose oneself indecently  
29    tr   to cover (a roof) with flashing  
30    to send a sudden rush of water down (a river, etc.), or to carry (a vessel) down by this method  
31    (in the making of glass) to coat (glass) with a thin layer of glass of a different colour  
32    tr   to subject to a brief pulse of heat or radiation  
33    tr   to change (a liquid) to a gas by causing it to hit a hot surface  
34    Obsolete   to splash or dash (water)  
     (C14 (in the sense: to rush, as of water): of unknown origin)  

electronic flash  
      n     (Photog)   an electronic device for producing a very bright flash of light by means of an electric discharge in a gas-filled tube  
flash burn  
      n     (Pathol)   a burn caused by momentary exposure to intense radiant heat  
flash card  
      n   a card on which are written or printed words for children to look at briefly, used as an aid to learning  
flash eliminator   , suppressor  
      n   a device fitted to the muzzle of a firearm to reduce the flash made by the ignited propellant gases  
flash flood  
      n   a sudden short-lived torrent, usually caused by a heavy storm, esp. in desert regions  
flash gun  
      n   a type of electronic flash, attachable to or sometimes incorporated in a camera, that emits a very brief flash of light when the shutter is open  
flash photography  
      n   photography in which a flashbulb or electronic flash is used to provide momentary illumination of a dark or insufficiently lit subject  
flash photolysis  
      n     (Physics)   a technique for producing and investigating free radicals. A low-pressure gas is subjected to a flash of radiation to produce the radicals, subsequent flashes being used to identify them and assess their lifetimes by absorption spectroscopy  
flash point   , flashing point  
1    the lowest temperature at which the vapour above a liquid can be ignited in air  
2    a critical moment beyond which a situation will inevitably erupt into violence  
the political mood has reached flash point     
flash set  
      n     (Civil engineering)   undesirably rapid setting of cement in concrete  
flash smelting  
      n   a smelting process for sulphur-containing ores in which the dried and powdered ore, mixed with oxygen, is ignited on discharge from a nozzle, melts, and drops to the bottom of a settling chamber. Sulphur is released mainly in its solid form, thus reducing atmospheric pollution  
green flash  
      n     (Astronomy)   a flash of bright green light sometimes seen as the sun passes below the horizon, caused by the dispersion of blue light  
ring flash  
      n     (Photog)   a type of electronic flash in which the light source is arranged in a ring around the lens in order to produce a light without shadows  

English Collins Dictionary - English Definition & Thesaurus  




1    blaze, coruscate, flare, flicker, glare, gleam, glint, glisten, glitter, light, scintillate, shimmer, sparkle, twinkle  
2    blaze, burst, coruscation, dazzle, flare, flicker, gleam, ray, scintillation, shaft, shimmer, spark, sparkle, streak, twinkle  
3    barrel (along)     (informal, chiefly U.S. & Canad.)   bolt, burn rubber     (informal)   dart, dash, fly, race, shoot, speed, sprint, streak, sweep, whistle, zoom  
4    bat of an eye     (informal)   instant, jiffy     (informal)   moment, second, shake, split second, trice, twinkling, twinkling of an eye, two shakes of a lamb's tail     (informal)  
5    display, exhibit, expose, flaunt, flourish, show  
6    burst, demonstration, display, manifestation, outburst, show, sign, touch  
7      (informal)   cheap, glamorous, naff     (Brit. slang)   ostentatious, tacky     (informal)   tasteless, vulgar  

English Collins Dictionary - English synonyms & Thesaurus  

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