A cover extraction hood is a combination of an internal cover, fitted with an extraction hood enclosing the cover. This type of extraction has proven itself well in practice, and is used almost exclusively for high-output furnaces. The hood can be adapted to meet the corresponding requirements by means of set opening angles, and can for example remove all the smoke during charging. Another option is the fitting of this extraction system with automatically opening slots in the frontal area for smoke extraction directly in front of the crucible furnace during the production of nodular graphite iron.
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