| 摘要 |
In hot strip plants, after casting, the residual heat of a partial quantity of the slabs has hitherto been used such that the slabs either are directly rolled or are placed warm or hot in the furnace. The remaining slabs normally cool after casting in a hall through which flows air and are stacked before their further transport. The same applies to the residual heat present in the coils after winding, which often cool in the coil-storage area in air. The cooling energy of the continuous-casting plant likewise escapes unused into the surroundings. In order to convert this unused solidification heat and residual heat into electric energy, it is proposed according to the invention that the slabs (10) are cast in a continuous-casting plant and the slabs (10) or coils are transported into the slab-storage area (12) or coil-storage area and during the casting in heat exchangers (31) and/or during the transport in heat exchangers (31) heat is extracted and/or there are deposited in part one on top of the other in specially prepared storage areas (30) provided with heat exchangers (31) for a short time or several hours, wherein in this transport period the cast billet or the slab (10) and/or in the storage period the residual heat of the slabs (10) or coils is transferred via heat conduction and thermal radiation and convection via the heat exchangers (31) into a heat-transfer medium such as, for example, thermal oil, and heats it, which then is discharged via heat-transfer transport lines (33) for power generation and/or direct use of the process heat by other heat consumers. |
