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  1. Bessemer converter, schematic diagram. The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace.The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it ...

  2. A blast furnace is a special type of furnace for smelting iron from ore.Blast furnaces are very large. They can be up to 60 metres (200 ft) tall and 15 metres (49 ft) in diameter.The blast furnace is the biggest chemical reactor.Blast furnaces are also called high ovens.. A blast furnace is usually built with a steel case and bricks made of magnesium oxide or other refractory material inside ...

  3. Puddling (metallurgy) Schematic drawing of a puddling furnace. Puddling is the process of converting pig iron to bar (wrought) iron in a coal fired reverberatory furnace. It was developed in England during the 1780s. The molten pig iron was stirred in a reverberatory furnace, in an oxidizing [citation needed] environment to burn the carbon ...

  4. A rotating furnace is a device for making solid objects which have concave surfaces that are segments of axially symmetrical paraboloids. Usually, the objects are made of glass. The furnace makes use of the fact, which was known already to Newton, that the centrifugal-force-induced shape of the top surface of a spinning liquid is a concave ...

  5. An industrial furnace, also known as a direct heater or a direct fired heater, is a device used to provide heat for an industrial process, typically higher than 400 degrees Celsius. [1] They are used to provide heat for a process or can serve as reactor which provides heats of reaction. Furnace designs vary as to its function, heating duty ...

  6. en.wikipedia.org › wiki › ForgeForge - Wikipedia

    The inside of a typical smithy in Finland Wooden smithy built in 1726 in Opole, Upper Silesia, Poland A smithy built around 1880 in Mērsrags, Courland, Latvia currently located at The Ethnographic Open-Air Museum of Latvia. A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located.The forge is used by the smith to heat a piece of metal to a ...

  7. Piton de la Fournaise (French: [pitɔ̃ də la fuʁnɛz]; English: "Peak of the Furnace") is a shield volcano on the eastern side of Réunion island, a French overseas department and region, in the Indian Ocean.It is currently one of the most active volcanoes in the world, along with Kīlauea in the Hawaiian Islands, Stromboli and Etna in Italy and Mount Erebus in Antarctica.