Recovery of non-ferrous metals from sub - Industries of zinc and lead using a submerged plasma

摘要

Where the Smoke evaporates to Zn, fe and S becomes the slag is oxidized to SO2, in a single step process for the fusion of Industrial Waste Zn and PB (goethite and jarosite) in an oven which comprises at least a submerged plasma Torch, which generates an oxidizing gas mixture And by feeding a Solid reducing Agent into the melt.The Torch is not transferred, and the oxidizing gas mixture is injected into the slag phase. The amount of Free Oxygen in the gas mixture is adapted to the needs for the Stoichiometric oxidation of at least most of s and fe, and the amount of Solid reducing Agent adapts to the needs for the Stoichiometric reduction of at least most of Zn.The gas mixture is generated by feeding The Torch with a mixture of Air and gaseous Hydrocarbon. Industrial Waste Zn contained in and / or GE, which is valued by Evaporation to smoke; and such Waste or reducing Agent containing cu, which form a phase of Kill vehicle. The gas mixture is adapted to obtain a Kill vehicle that contains more than 40 wt.% Cu