F27DLevel 3

DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE

**Definition:** This place covers:

Details, accessories of furnaces, kilns or ovens in general, not for specific furnaces, kilns or ovens.

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F27D 1/00Casings

F27D 11/00Arrangement of elements for electric heating in or on furnaces

F27D 13/00Apparatus for preheating charges

F27D 15/00Handling or treating discharged material

F27D 17/00Arrangements for using waste heat

F27D 19/00Arrangements of controlling devices

F27D 21/00Arrangement of monitoring devices

F27D 2201/00Manipulation of furnace parts

F27D 25/00Devices for removing incrustations

F27D 27/00Stirring devices for molten material

F27D 3/00Charging

F27D 5/00Supports, screens or the like for the charge within the furnace

F27D 7/00Forming, maintaining or circulating atmospheres in heating chambers

F27D 9/00Cooling of furnaces or of charges therein

F27D 99/00Subject matter not provided for in other groups of this subclass

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