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  2. Category:Chimneys - Wikipedia

    en.wikipedia.org/wiki/Category:Chimneys

    Articles relating to chimneys, architectural ventilation structures made of masonry, clay or metal that isolate hot toxic exhaust gases or smoke produced by a boiler, stove, furnace, incinerator or fireplace from human living areas.

  3. Crucible Industries - Wikipedia

    en.wikipedia.org/wiki/Crucible_Industries

    Metal-shaping factories across the country depended on cutting tools made of crucible steel through the 1920s, when electric steel furnaces gained prominence." [ 14 ] Three companies which merged to form Crucible into the largest U.S. crucible-steel-producing company were: [ 10 ] [ 15 ]

  4. Induction furnace - Wikipedia

    en.wikipedia.org/wiki/Induction_furnace

    The advantage of the induction furnace is a clean, energy-efficient and well-controlled melting process, compared to most other means of metal melting. Most modern foundries use this type of furnace, and many iron foundries are replacing cupola furnaces with induction furnaces to melt cast iron, as the former emit much dust and other pollutants ...

  5. Crucible - Wikipedia

    en.wikipedia.org/wiki/Crucible

    Crucibles are available in several sizes and typically come with a correspondingly-sized lid. [20] When heated over a flame, the crucible is often held inside a pipeclay triangle which itself is held on top of a tripod. Crucibles and their covers are made of heat-resistant materials, usually porcelain, alumina or an inert metal.

  6. List of preserved historic blast furnaces - Wikipedia

    en.wikipedia.org/wiki/List_of_preserved_historic...

    Only crucible of the original furnace can be seen at the present time. The model of the furnace was built in conformity with documentation in 2015. The ore, smelted in the plant was mined in Zamutov and Hermanovce (Petrík et al., 2002b; Petrík et al., 2002c; Mihok et al., 2009b).

  7. Chimney - Wikipedia

    en.wikipedia.org/wiki/Chimney

    A throat damper is a metal plate at the base of the chimney, just above the firebox, that can be opened and closed by a lever, gear, or chain to seal off the fireplace from the chimney. The advantage of a top damper is the tight weatherproof seal that it provides when closed, which prevents cold outside air from flowing down the chimney and ...

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