Online Dictionary

blast furnace Explained

blast furnace at English => English (Longman) Of Explained:

n [C] a large industrial structure in which iron is separated from the rock that surrounds it//

blast furnace at English => English (The Britannica Concise) Of Explained:

Vertical shaft furnace that produces liquid metals by the reaction of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, fuel, and flux fed into the top. Blast furnaces are used to produce pig iron from iron ore for subsequent processing into steel; they are also employed in processing lead, copper, and other metals. The current of pressurized air maintains rapid combustion. Blast furnaces were used in China as early as 200 BC, and appeared in Europe in the 13th cent., replacing the bloomery process. Modern blast furnaces are 70-120 ft (20-35 m) high, have 20-45-ft (6-14-m) hearth diameters, use coke fuel, and can produce 1,000-10,000 tons (900-9,000 metric tons) of pig iron daily. See also metallurgy, smelting.

blast furnace at English => English (Oxford Advanced Learners) Of Explained:

Blast furnace at English => English (Websters 1913) Of Explained:

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.

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.

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.

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.

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.

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

One blast upon his bugle horn Were worth a thousand
men. --Sir W.

The blast of triumph o'er thy grave. --Bryant.

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

By the blast of God they perish. --Job iv. 9.

Virtue preserved from fell destruction's blast.

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.

7. A flatulent disease of sheep.

{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.]

blast furnace at English => English (WordNet) Of Explained:

blast furnace
n : a furnace for smelting of iron from iron oxide ores;
combustion is intensified by a blast of air

blast furnace at English (WD) Of Explained:



Inter: wikipedi » a
Inter: en-noun » head=blast furnace
  • a furnace in which iron ore is smelted to iron; the process being intensified by a blast of hot air


    Inter: trans-top » furnace where iron ore is smelted
    • Esperanto: Inter: t- » eo|altforno
    • Estonian: Inter: t- » et|kõrgahi
    • Finnish: Inter: t+ » fi|masuuni
    • French: Inter: t+ » fr|haut fourneau|m
    • German: Inter: t+ » de|Hochofen|m

    Inter: trans-mi » d
  • Greek: Inter: t+ » el|υψικάμινος|f|tr=ypsikáminos
  • Italian: Inter: t- » it|altoforno|m
  • Portuguese: Inter: t- » pt|alto forno|m
  • Romanian: Inter: t- » ro|furnal|n
  • Russian: Inter: t+ » ru|домна|f|tr=dómna

  • Inter: trans-botto » m
    Translation: de » blast furnace
    Translation: et » blast furnace
    Translation: fr » blast furnace
    Translation: kn » blast furnace
    Translation: pl » blast furnace
    Translation: ru » blast furnace
    Translation: ta » blast furnace
    Translation: tr » blast furnace
    Translation: zh » blast furnace