PROCESSING METHOD OF RESIDUE PRODUCED FROM CLEANING OF SMOKE UPON BURNING METAL CONTAINING SOLID RESIDUE, PARTICULARLY DOMESTIC GARBAGE

摘要

PROBLEM TO BE SOLVED: To provide a method of obtaining a by-product rich in a metal capable of recycling to a metallurgical field by reducing a solid residue produced by burning waste rich in a metal element, particularly domestic garbage. ;SOLUTION: (1) A solid residue and a solid reducing agent are mixed, (2) the mixture is processed in a furnace at the temperature of 1000°C or higher (3) to obtain a vitrification product lacking in a metal and a gas emission where a metal element is rich in a gas phase, (4) the gas rich in a metal is air cooled, (5) a product obtained by the air cooling is filtrated to yield secondary ash rich in a metal salt, and at a final time point of the filtration operation (6) the secondary ash is released into the atmosphere so that its smoke is cleaned, and the secondary ash rich in the metal salt is rendered to a processing of producing a reuseable product rich in metal.;COPYRIGHT: (C)1997,JPO