| 摘要 |
Apparatus for recovering heat from hot slag comprises a heat exchanger having at least two concentric cylinders 6-8, 6-9 & 6-10 which are rotatable about their concentric axis. The first cylinder 6-8 comprises a slag inlet 6-11 and another 6-10 comprises a slag outlet 6-12. A slag transmission path 6-16 lies between the inlet 6-11 and the outlet 6-12 and passes through the first cylinder 6-8 in a first direction and through another cylinder 6-9 in the opposite direction. Also a method of recovering heat from hot slag by passing hot slag from an inlet 6-11 to an outlet 6-12 of a heat exchanger in a first direction along a first tubular part 6-8 of the heat exchanger and then in an opposite direction along second concentric tubular part 6-9 of the heat exchanger. While slag moves through the heat exchanger air is passed from the outlet 6-12 to the inlet 6-11. |
