RECYCLING PROCESS FOR RECYCLING GRANULATED METALLIC MATERIALS CONTAINING SURFACE IMPURITIES

The present invention relates to a recycling process for recycling granulated metallic materials containing surface impurities combining a subprocess 1 and a subprocess 2, where the contaminating material is partially removed in subprocess 1 by means of heating the starting material to a temperature...

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Bibliographische Detailangaben
Hauptverfasser: VICARIO GOMEZ, IBAN, MÚGICA IRAOLA, JUAN CARLOS, ABUIN ARIZETA, ALBERTO, ANTOÑANZAS GONZÁLEZ, FRANCISCO JAVIER, YURRAMENDI SARASOLA, LOURDES
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:The present invention relates to a recycling process for recycling granulated metallic materials containing surface impurities combining a subprocess 1 and a subprocess 2, where the contaminating material is partially removed in subprocess 1 by means of heating the starting material to a temperature less than or equal to 300°C in a controlled oxidizing atmosphere; and the material is heated to 400- 550°C in an inert atmosphere in subprocess 2 and the remaining residues of contaminating material are removed by a combined thermal-mechanical action. Proceso de reciclado de materiales metálicos granulados conteniendo impurezas superficiales, que combina un subproceso 1 y un subproceso 2, donde en el subproceso 1 se produce la eliminación parcial del material contaminante mediante calentamiento del material de partida hasta una temperatura inferior o igual a 300°C, en atmósfera oxidante controlada; y en el subproceso 2, en atmósfera inerte, se calienta el material hasta 400-550°C y se eliminan restos de material contaminante que aún quedan por un efecto combinado térmico-mecánico.