| 摘要 |
<p>Method and device for pre-heating waste metal for furnaces, flue gases generated in a furnace (1) being supplied simultaneously or sequentially to two pre-heating places (3, 4) with waste metal containers (14), said flue gases being made to flow through a combustion chamber (19) provided with a burner (20) before being supplied to the pre-heating places (3, 4), said burner (20) producing a variable amount of hot gases for admixture with the flue gases from the furnace (1) and overheating thereof. After flowing through the waste metal containers (14) burnt flue gases are supplied to a purification plant (5) for flue gases and unburnt flue gases to the combustion chamber (19) for further burning, after which the flue gases now burnt are supplied to said purification plant (5).</p> |
