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This study evaluates the efficiency of using mechanical activation for the extraction of zinc from sphalerite and zinc ferrite in lean zinc ores or EAF dusts in alkaline. The mechano-chemical leaching is more effective in comparison with the chemical leaching of non-activated samples. It was found that over 82% of Zn can be extracted from lean zinc ores containing sphalerite with lead compound as additive, and over 45% Zn in EAF dusts can be extracted by mechano-chemical leaching when the leaching process is operated in 5mol/L NaOH solution at 90°C, and Φ5 mm stainless steel ball as activation medium, the mass ratio of ball to raw materials of 30:1

Recovering of Zinc from Solid Waste Bearing Sphalerite or Zinc Ferrite by Mechano-Chemical Extraction in Alkaline Solution