F27B9/2423 - CPC Classification

Furnaces through which the charge is moved mechanically, e.g. of tunnel type ; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace) the charge rotating about an axis parallel to the axis of advancement of the charge

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