Patent Number: 6,293,209

Title: Process for treating a material containing metal and organic matter, including metal separation

Abstract: A process for treating a raw material containing aluminum or a similar metal melting at a low temperature and organic matter, including metal separation, particularly intended for the treatment of liquid container rejects consisting of aluminum foil, polymer material and possible fibre residues in order to recover the aluminum and to utilise the organic matter as a fuel. The raw material is introduced in a bubbling fluidised bed, where the organic matter is gasified at a temperature higher than the melting point of the metal present. The gas removed from the fluidised bed and the entrained metal are subsequently cooled to a temperature below the melting point of metal by admixing a cooling medium such as water in the gas flow. The solid metal particles are eventually separated from the gas e.g. with a cyclone and the gas flow is possibly filtered before combustion.

Inventors: Nieminen; Matti (Espoo, FI), Kurkela; Esa (Espoo, FI)

Assignee: Valtion Teknillinen Tutkimuskeskus

International Classification: B01J 8/32 (20060101); B01J 8/24 (20060101); B01J 8/00 (20060101); B01J 8/18 (20060101); B08B 7/00 (20060101); C22B 7/00 (20060101); C22B 21/00 (20060101); F23G 5/027 (20060101); F23G 7/00 (20060101); F23G 5/30 (20060101); F23J 015/00 ()

Expiration Date: 09/25/2018