Method for treating bottom ash

• Main Authors: VAN KOOY LAURENS ANTON, VAN CRAAIKAMP HANS, SIERHUIS WIL, REM PETER CARLO, BERKHOUT SIMON PETER MARIA
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2010
• Subjects: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

The present invention relates to a method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least one of the following steps: the removal of organic components, the removal of heavy metals, the removal of ions and the removal of a fraction having a size of up to 50 [mu]m. It is preferred for the nonferrous heavy metals to be removed and the ferrous metals to remain in the fraction. Most preferably at least one of the treatment steps comprises a wet treatment.