METHOD FOR TREATING HOUSEHOLD REFUSE INCINERATOR ASH

摘要

The invention concerns a method for treating household refuse or industrial waste incinerator ash, whereby the wastes are classified in two different size distribution phases, the solid phases filtered during such treatments are then subjected to a hydromatallurgical treatment which consists in a carbonatation step and a lixiviation step to extract the polluting elements. Optionally the solid load is then thermally treated by proportioning the fine and gross fractions to obtain an adapted silica/lime and silica/sodium ratio.