A process for dissolving metals, in particular tin, and a plant for dissolving
metals operating according to said process allow to minimize the quantity of metal
in the sludge and the oxygen consumption, and entail a first step in which in a
first reactor an effective quantity of oxygen is solubilized in an electrolytic
solution obtaining an oxygen-enriched electrolytic solution; and a second step,
distinct from the former, in which in a second reactor said oxygen-enriched solution
is flown through a bed of metal for the deposition in a metallic form.