Odour reduction in cupola furnaces

The basic principles of the build-up of odours in cupola furnaces have now been understood and the principal odour emitters have been identified. The most important primary measure for the reduction of odours is deemed to be the use of clean scrap, while post-combustion in a recuperator has turned out to be the best secondary measure. 

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Source: German National Library of Science and Technology Hannover (TIB)