Process for reclaiming incineration waste

Details Process for reclaiming incineration waste Process for reclaiming incineration waste

C - Chemistry, Metallurgy

22

B

C22B 7/04 (2006.01) C21C 5/36 (2006.01)

Patent

CA 2237510

This invention concerns a process for reclaiming waste or slag from incineration, for instance from garbage incineration plants or steel furnace slag in a converter (1). In this process, the melted slag is introduced into a converter (1) to form a slag layer of over 1.2 meters and reacted with a metal bath (4) through which oxygen is blown. The oxygen is introduced into the bath (4) as air or together with CO2 or steam for cooling the nozzles (7, 8) located in the base of the bath (4).

L'invention concerne un procédé de valorisation de résidus de combustion ou scories provenant d'usines d'incinération d'ordures ménagères ou de scories d'usines d'acier. Selon ce procédé, on introduit les scories en formant une couche de plus de 1,2 m dans un convertisseur (1), dans lequel on fait réagir les scories en fusion dans un bain (4) métallique, à travers lequel de l'oxygène est soufflé. L'oxygène est introduit dans le bain (4) sous forme d'air ou bien en association avec du CO¿2? ou de la vapeur d'eau pour refroidir les buses (7, 8) situées à la base du bain (4).

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