Treating ash and dust from incineration plants by coprocessing with hazardous waste and/or metallic scrap

A process for treating ash and dust (1) from incineration plants in which the ash and dust are co-processed with specific listed hazardous wastes (3). The wastes (3) are added (2) to enrich the mixture in certain valuable recoverable components such as metals. The mixture is smelted (5) with reducin...

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Bibliographische Detailangaben
Hauptverfasser:	AUNE, JAN A
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY COMBUSTION APPARATUS COMBUSTION PROCESSES CONSUMING WASTE PRODUCTS BY COMBUSTION CREMATION FURNACES DISPOSAL OF SOLID WASTE FERROUS OR NON-FERROUS ALLOYS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RECLAMATION OF CONTAMINED SOIL SOIL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	A process for treating ash and dust (1) from incineration plants in which the ash and dust are co-processed with specific listed hazardous wastes (3). The wastes (3) are added (2) to enrich the mixture in certain valuable recoverable components such as metals. The mixture is smelted (5) with reducing agent (6) to give a liquid metal phase (10) and a waste gas phase (12). Any remaining oxidisable components in the waste gas (12) are subjected to controlled afterburning (19).