| 摘要 |
<p>In a process for the environmentally compatible recovery of aluminium and aluminium alloys from materials containing organic compounds, these materials are remelted in a sidewell melting furnace (10) having a melting chamber (12) and a main hearth (14) and the flue gases are purified. For this purpose the temperature in the main hearth (14) is set to at least 1200 DEG C. The flue gases are passed from the melting chamber (12) into the main hearth (14), held at this temperature for a delay time of at least 5 sec and then quenched to a temperature of less than 100 DEG C. An apparatus suitable for carrying out the process comprises a sidewell melting furnace (10) having a melting chamber (12) and main hearth (14). To quench the flue gases exiting from the main hearth (14), a quench (34) is provided downstream of the melting furnace (10). It is possible by means of the process and the apparatus to avoid in the exhaust gas dioxins and furans formed on remelting materials containing organic compounds and to comply with the limit value of 0.1 ng/m<3> specified as a total value for dioxin and furan emissions in the seventeenth Ordinance on Implementation of the Federal Pollution Prevention Law of the Federal Republic of Germany. <IMAGE></p> |
