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Blast furnaces operate on the principle of chemical reduction whereby carbon monoxide converts iron oxides to elemental iron. Blast furnaces differ from bloomeries and reverberatory furnaces in that in a blast furnace, flue gas is in direct contact with the ore and iron, allowing carbon monoxide to diffuse into the ore and reduce the iron oxide.
Two blast furnaces have been preserved, including cowper stoves. Blast furnace 3 is a museum and serves as an observation platform. An elevator has been installed. The entire plant is illuminated at night. An application to declare blast furnaces 1 and 3 UNESCO World Heritage Sites is currently pending. [10]
A metallurgical furnace, often simply referred to as a furnace when the context is known, is an industrial furnace used to heat, melt, or otherwise process metals. Furnaces have been a central piece of equipment throughout the history of metallurgy; processing metals with heat is even its own engineering specialty known as pyrometallurgy.
Blast furnace gas. An early internal combustion blowing engine of around 1900, powered by furnace gas. Blast furnace gas (BFG) [1] is a by-product of blast furnaces that is generated when the iron ore is reduced with coke to metallic iron. It has a very low heating value, about 93 BTU /cubic foot (3.5 MJ/m 3), [2] because it consists of about ...
Sloss Furnaces is a National Historic Landmark in Birmingham, Alabama in the United States. It operated as a pig iron -producing blast furnace from 1882 to 1971. After closing, it became one of the first industrial sites (and the only blast furnace) in the U.S. to be preserved and restored for public use. In 1981, the furnaces were designated a ...
Pages in category "Blast furnaces in the United States" The following 26 pages are in this category, out of 26 total. This list may not reflect recent changes .
Carrie Furnace. Carrie Furnace is a former blast furnace located along the Monongahela River in the Pittsburgh area industrial town of Swissvale, Pennsylvania, and it had formed a part of the Homestead Steel Works. The Carrie Furnaces were built in 1884 and they operated until 1982. During its peak, the site produced 1,000 to 1,250 tons of iron ...
Direct reduction (blast furnace) Direct reduction is the fraction of iron oxide reduction that occurs in a blast furnace due to the presence of coke carbon, while the remainder - indirect reduction - consists mainly of carbon monoxide from coke combustion. It should also be noted that many non-ferrous oxides are reduced by this type of reaction ...