| 摘要 |
The holding furnace (1) has a duct (9) which opens into the wall (8) of a furnace space (2) at the height of the base (3). Adjoining the duct (9) at the transition to the wall (8) upwards into the furnace space (2) is a bead (11) which prevents clinker coating at the inlet opening (4) of the duct (9), as a result of which premature clogging of the duct (9) is avoided. <IMAGE>
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