| 摘要 |
<p>PCT No. PCT/EP85/00656 Sec. 371 Date Aug. 5, 1986 Sec. 102(e) Date Aug. 5, 1986 PCT Filed Dec. 2, 1985 PCT Pub. No. WO86/03783 PCT Pub. Date Jul. 3, 1986.In order to be able to heat the charging material (3) of a charging material preheater (1) in a more uniform fashion and to higher temperatures, while enjoying short flow paths, the charging material preheater (1) is in the form of a container (2) having a bottom opening (4) which can be closed by an axially displaceable hollow cylinder (13), the interior of the container is subdivided by a grid (6) which falls away in an inclined configuration towards the bottom opening (4), into a receiving space (7) for the charging material and a free lower annular space (8) into which opens an opening (9) for the heating gas, and the hollow cylinder (13) is incorporated into the flow path, by way of gas orifices (16, 17). In addition the heating gases are passed through the charging material (3) alternately in opposite directions.</p> |
