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Tuyere |
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tuyere [twē′yer]
(metallurgy) An opening in the shell and refractory lining of a furnace through which air is forced. Tuyere a device for supplying an air blast in metallurgical furnaces or for blowing oxygen into metal baths in steelmaking and the smelting of nonferrous metals. In blast furnaces a tuyere is a nozzle with a water-cooled jacket, and in cupolas and water-cooled blast furnaces it is a slit-shaped opening in the wall of the unit. In converters, open-hearth furnaces, and two-bath steel-making furnaces such a device is called a lance; it is a pipe for supplying oxygen that has a tip of special construction and a water-cooled jacket. A mechanism is provided for raising, lowering, and replacing the tuyere. Besides oxygen, powdered materials can be supplied through tuyeres and lances (for example, in the basic oxygen process). Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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