FLUIDISED BED METHOD FOR THE RECOVERY OF METAL FROM ORGANICS-CONTAINING METAL WASTE

摘要

This invention concerns a process for the recovery of metal from waste of metal polluted by organic material, such as aluminium bearing beverage and food containers, whereby the waste is heated to a temperature which is below the melting point of the metal, but is sufficiently high for the removal of the organic material, in a fluidised bed of granules, in the presence of an oxidising gas, whereby the oxidising gas contains 6-21 volume % of oxygen, and the residence time of the waste in the fluidised bed is maximum 15 minutes. These treatment conditions prevent metal loss by oxidation.