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 The cupola is important equipment for melting cast iron casting production, after pouring the melt into molten iron cast iron block out of the box and after cooling in the sand while casting. The cupola is a vertical cylinder-shaped smelting furnace is divided into before the furnace and after the furnace. Before the furnace is divided into the taphole, the slag door, the lid before the hearth and the bridge. After the furnace is divided into three parts, stove top, waist furnace hearth. Waist furnace with hot air around tube to separate, repair furnace closed, sealed with mud. On top of furnace heat exchanger. Mainly used for iron castings production, but also to meet the BOF steelmaking, opening up due to the roof, it said the cupola