Section of a 17th and 18th century blast furnace. The bellows, at right, draw in air directly from the atmosphere.
Cold blast, in ironmaking, refers to a metallurgical furnace where air is not preheated before being blown into the furnace. This represents the earliest stage in the development of ironmaking. Until the 1820s, the use of cold air was thought to be preferable to hot air for the production of high-quality iron; this effect was due to the reduced moisture in cool winter air.[1]
The discovery by James Beaumont Neilson in about 1825 of the beneficial effects of the hot blast led to the rapid obsolescence of cold blast ironworks in Great Britain, where hot blast was in general use by 1835.[1] Cold blast ironworks survived longer in the United States, but the use of hot blast as a method of smelting iron with anthracite was introduced in 1836, and the increasing US production of coke gradually drove out the cold blast furnaces. However, one of the last known operating cold blast charcoal furnaces, Pleasant (formerly Eagle) Furnace, in Curtin, Pennsylvania did not close until 1921.[2]
^ abBartholomew & Metz 1988, pp. 15–17.
^"Curtin Village". Archived from the original on 2010-04-16. Retrieved 2010-09-08.
Coldblast, in ironmaking, refers to a metallurgical furnace where air is not preheated before being blown into the furnace. This represents the earliest...
for portable use have a flat wick and are made in dead-flame, hot-blast, and cold-blast variants. Pressurized kerosene lamps use a gas mantle; these are...
A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough...
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or...
ore. These can be subdivided into: Coldblast furnaces Hot blast furnaces The bloomery, a precursor to the blast furnace that produces sponge iron from...
1832–1837 with intermittent but sporadically improved successes using coldblast processes with two differently designed furnaces. While this preliminary...
Hot blast refers to the preheating of air blown into a blast furnace or other metallurgical process. As this considerably reduced the fuel consumed, hot...
and DeSarno, together with John Luraschi (bass), had played together in ColdBlast and Steel. Luraschi was an Upstage veteran and had been a fringe member...
weather: Coldblast to bring snow in Dandenong Ranges". News.com.au. 4 August 2024. Retrieved 19 June 2024. Jones, M. C. (2003). "Climatology of cold outbreaks...
under a coldblast. Since the 17th century, the first step in European steel production has been the smelting of iron ore into pig iron in a blast furnace...
The Cold War was a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the...
with the golden horns Hercules had seen "the far-off land beyond the coldblast of Boreas. [Hyperborea]" Hence, as the reindeer is said to be the only...
stoves or hot blast; so it appears that the furnace used a cold-blast technology. A cold air blast made it more difficult—but not impossible—to achieve a...
Information". Bloomberg.com. 14 August 2023. Staff, "FROM OVER HILLS COMES COLDBLAST - And Citrus Men Are Hard Hit, Is Claimed", The San Bernardino Daily Sun...
This list of preserved historic blast furnaces contains decommissioned blast furnaces, of which substantial remains survive. The furnaces are preserved...
returns to Marvell in The Waste Land with the lines "But at my back in a coldblast I hear / The rattle of the bones" (Part III, line 185) and "But at my...
"partial decarbonization" method of repeated forging of cast iron under a coldblast. Sinologist Joseph Needham and historian of metallurgy Theodore A. Wertime...
that blast furnaces, that convert raw iron ore into pig iron, which can be remelted in a cupola furnace to produce cast iron by means of a coldblast and...
Clifton Furnace is a historic coldblast charcoal furnace located near Clifton Forge, Alleghany County, Virginia. It was built in 1846 of large, rough-hewn...
"Snow falls in WA in April for first time in 49 years as Good Friday coldblast turns Bluff Knoll white". Weatherzone. Weatherzone. Archived from the...
process that utilized partial decarbonization via repeated forging under a coldblast. By the 11th century, there was a large amount of deforestation in China...
A blast shelter is a place where people can go to protect themselves from blasts and explosions, like those from bombs, or in hazardous worksites, such...
England as a source of iron ore. As early as 1726, it may have included a coldblast charcoal furnace. Accokeek/Potomac served as the headquarters of the Principio...
blast furnace was remelted in a cupola furnace; it was designed so that a coldblast injected at the bottom traveled through tuyere pipes across the top where...
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