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Castings production from gray cast iron is 55% of castings production around the world. Cupola furnace is the most used melting furn ace for the cast iron production. There is a counter current heat excha nge during melting process in the cupola furnace. Gases proceed upwards and charge and coke downw ards where they are heated. During this process the emission creation. These emissions come from coke and metallic parts of the charge. Another sources of contamination are particles created by abrasion of charge on ...