Method of processing and recovering metalliferous deposits resulting from the purification of gases during the thermal treatment of wastes

摘要

The method consists of the following steps: (a) the precipitations are subjected to a wet wash; (b) moisture and volatile metals (which later are recovered via condensation) are separated during a subsequent low-temperature drying process; (c) the metal sump thus treated (possibly after intermediate storage) is dissolved by known methods of hydrometallurgy so that, selectively, by means of ion exchange, electrolysis and/or metal ion extraction it can be prepared for production of pure metals or metal compounds; and (d) all gases produced during the entire preparation process - after volatile metal constituents are removed from them - are fed to a high-temperature stage for detoxication and disposal.