Extraction of Zinc from Residues of Leaching By Acid Attack

The study focuses on extraction of zinc from residues of leaching by chemical attack, using acid attack by the cell return solution and finding the optimum conditions for the extraction parameters: temperature, pH and duration of the leaching process. The acidity of the cell return solution (158 g/L) was determined by acid-base assay using colored indicators (methyl orange). The results obtained showed that the zinc concentration in the filtrate was found to be 97.84 g/L, at PH of 1.5 and a temperature of 75°C for 150 min.