Recovery of Zinc from the Concentrate of Domestic Waste Processing by Vacuum Distillation

The heterogeneity and local distribution of elements are established as a result the study nonferrous metals composition domestic wastes processing concentrate containing 20–40% copper, 40–50% brass, 20–28% zinc up to 1% aluminium. Metals mainly concentrated in granules three types: zinc-based, copper-based copper–zinc alloy, i.e., brass. phase these granule types their structure determined. Zinc covered with refractory oxide shell. A distillation method for such raw materials based on full state diagrams, including transition melting pairs double systems copper tin lead, is offered. possibility rather complete (over 90%) accumulation other more than 96 wt. % basic element, has been demonstrated by electric crucible highly reducing atmosphere. Copper-based alloys, after adjustment content some (tin), can be realized pressure-treated bronzes. Copper impurities corresponding standard blister electrolytically processed (after dissolution sulphuric acid) production. Equipment implementation electro-thermal process that provides metal recycling proposed.