EAF flue-gas capture and cleaning equipment

Regulation limiting the dust emissions from the melting of metals. 

Metso Lokomo Steels and Sulzer Pumps Karhula Foimdry (FIN) 

The capture of smoke and dust is the most difficult problem to solve when installing an olT-gas collection system on a coreless induction furnace, since there is no exhaust shaft. Several methods have been developed in the past decade, each with advantages and disadvantages. 

General ventilation of the workplace A combination of wall mounted louvres and roof moimted ventilators situated over the furnace platform are used to increase the natural convection of smoke and fumes and to direct them outside. Even with baffles suspended from the roof and using high extraction rates the efficiency is often poor and easily disturbed by draughts. 

Swing aside hoods These hoods are more efficient when used in conjunction with vibrating feeders. Cut-outs in the hood can facilitate charging. During tapping, the hood is swung over the ladle, allowing efficient fume extraction. 

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Table 4.42 Cost data for EAF flue-gas capture and cleaning equipment [199, Metalodlew s.a., 2002]...

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