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The effect of milling on the leaching of Pb (and other metals like Fe, Cu, Ni and Zn) from a secondary lead smelter matte was studied. The effects of milling time, milling environment (dry or wet milling) and leaching reagent (Fe(III)-HNO3 or citrate solution) on the leaching efficiency of metals were investigated. A 1–2mm ferromagnetic fraction of the matte, containing 54% Fe, 5.8% Pb, 24% S and...
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