Blast furnace

Blast furnace
Blast Blast (bl[.a]st), n. [AS. bl[=ae]st a puff of wind, a blowing; akin to Icel. bl[=a]str, OHG. bl[=a]st, and fr. a verb akin to Icel. bl[=a]sa to blow, OHG. bl[^a]san, Goth. bl[=e]san (in comp.); all prob. from the same root as E. blow. See {Blow} to eject air.] 1. A violent gust of wind. [1913 Webster]

And see where surly Winter passes off, Far to the north, and calls his ruffian blasts; His blasts obey, and quit the howling hill. --Thomson. [1913 Webster]

2. A forcible stream of air from an orifice, as from a bellows, the mouth, etc. Hence: The continuous blowing to which one charge of ore or metal is subjected in a furnace; as, to melt so many tons of iron at a blast. [1913 Webster]

Note: The terms hot blast and cold blast are employed to designate whether the current is heated or not heated before entering the furnace. A blast furnace is said to be in blast while it is in operation, and out of blast when not in use. [1913 Webster]

3. The exhaust steam from and engine, driving a column of air out of a boiler chimney, and thus creating an intense draught through the fire; also, any draught produced by the blast. [1913 Webster]

4. The sound made by blowing a wind instrument; strictly, the sound produces at one breath. [1913 Webster]

One blast upon his bugle horn Were worth a thousand men. --Sir W. Scott. [1913 Webster]

The blast of triumph o'er thy grave. --Bryant. [1913 Webster]

5. A sudden, pernicious effect, as if by a noxious wind, especially on animals and plants; a blight. [1913 Webster]

By the blast of God they perish. --Job iv. 9. [1913 Webster]

Virtue preserved from fell destruction's blast. --Shak. [1913 Webster]

6. The act of rending, or attempting to rend, heavy masses of rock, earth, etc., by the explosion of gunpowder, dynamite, etc.; also, the charge used for this purpose. ``Large blasts are often used.'' --Tomlinson. [1913 Webster]

7. A flatulent disease of sheep. [1913 Webster]

{Blast furnace}, a furnace, usually a shaft furnace for smelting ores, into which air is forced by pressure.

{Blast hole}, a hole in the bottom of a pump stock through which water enters.

{Blast nozzle}, a fixed or variable orifice in the delivery end of a blast pipe; -- called also {blast orifice}.

{In full blast}, in complete operation; in a state of great activity. See {Blast}, n., 2. [Colloq.] [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • blast furnace — n. a towerlike smelting furnace for separating metal, esp. iron, from the impurities in the ore: a blast of air is forced into the furnace from below to produce the intense heat needed …   English World dictionary

  • blast furnace — ► NOUN ▪ a smelting furnace into which a blast of hot compressed air can be introduced …   English terms dictionary

  • blast furnace — blast furnaces N COUNT A blast furnace is a large structure in which iron ore is heated under pressure so that it melts and the pure iron metal separates out and can be collected …   English dictionary

  • Blast furnace — Blast furnace. См. Доменная печь. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • blast furnace — blast .furnace n a large industrial structure in which iron is separated from the rock that surrounds it …   Dictionary of contemporary English

  • blast furnace — blast ,furnace noun count a large industrial container in which rock containing metal is heated to a very high temperature so that the liquid metal flows out of the rock …   Usage of the words and phrases in modern English

  • Blast furnace — A blast furnace is a type of metallurgical furnace used for smelting to produce metals, generally iron. In a blast furnace, fuel and ore are continuously supplied through the top of the furnace, while air (sometimes with oxygen enrichment) is… …   Wikipedia

  • blast furnace — a large vertical furnace for smelting iron from ore, using coke as fuel: designed so as to direct a continuous blast of air through the fuel in order to obtain a high rate of combustion. [1700 10] * * * Vertical shaft furnace that produces liquid …   Universalium

  • blast furnace — noun a furnace for smelting of iron from iron oxide ores; combustion is intensified by a blast of air • Hypernyms: ↑furnace • Part Holonyms: ↑steel mill, ↑steelworks, ↑steel plant, ↑steel factory * * * noun, pl ⋯ naces [count] …   Useful english dictionary

  • blast furnace — UK / US noun [countable] Word forms blast furnace : singular blast furnace plural blast furnaces a large industrial container in which rock containing metal is heated to a very high temperature so that the liquid metal flows out of the rock …   English dictionary

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