| 摘要 |
<p>The trough consists of an integral bottom piece (1) which has a receiving ladle (2). A holding frame (3) for the filter piece (4) is inserted into this ladle (2) above the ladle bottom. The ladle orifice of the ladle (2) is provided above the upper boundary plane of the filter piece (4) with an inlet recess (6) and, below the lower boundary plane of the filter piece (4), with an outlet orifice (7) for the melt. Wall plates (8), which surround the ladle orifice and which can be joined via grooves by their abutting edges (8a) to one another and to the boundary edges (1a) of the ladle orifice, are placed upon the edge of the ladle orifice. The bottom piece (1) of the supporting trough and the wall plates (8) consist of a fired ceramic material resistant to temperature shocks and having a very low surface porosity. <IMAGE></p> |
