DETOXIFICATION PROCESS OF COMPOSITE INDUSTRIAL WASTE

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PROBLEM TO BE SOLVED : To provide a process for detoxifying a composite industrial waste containing earth/sand, glass, metal, plastics and the like, having a broad particle size distribution ranging from 10 mm to 10 μm in particle size or less, for example, like automobile shredder dust. SOLUTION : The industrial waste having the particle size distribution ranging from 1 μm to 10 mm and containing glass of 30 to 95 wt.%, plastics of 5 to 30 wt.% and metal and/or metal compound of 0.5 to 10 wt.% and clay are kneaded, the obtained cake is sintered for 1.5 to 5 hours until the temperature reaches 600 to 1, 200°C, and a detoxified sintered cake is obtained after naturally cooled down, the obtained sintered cake as it stands or after crushed is used as a backfill, or the cake after being crushed is formulated in a cement as a part of an aggregate. COPYRIGHT : (C)2007, JPO&INPIT