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| Study on the leaching process behavior of High-Lead Zn calcine |
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Received:June 28, 2021
Revised:September 30, 2021
Accepted:September 30, 2021
Published Online:April 27, 2022
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| DOI： |
| KeyWord:high-lead Zn calcine; neutral leaching; acid leaching; Zn leaching rate; Pb content |
| Author | Institution |
| YUAN Xiao-lei |
Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology |
| XIE Ke-qiang |
National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology |
| YAN Shi-yu |
National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology |
| JI Wen-tao |
National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology;Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology |
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| Abstract: |
| In view of the leaching behavior of high lead Zinc calcine, a two-stage acid leaching experiment was carried out with 7.20% Pb content of Zn calcine as raw material, Zn was leached out of Zn calcine and Pb was enriched in residue. The experiment explored the influence of different factors such as temperature, acid concentration, liquid-to-solid ratio, time and other factors in the neutral leaching and acid leaching processes on the leaching rate of zinc and the enrichment efficiency of lead. The experimental results show that during the neutral leaching process, the leaching rate of Zn is 90.73%, and the enrichment content of Pb in the intermediate leaching residue is 29.68%; after the acid leaching treatment of the intermediate leaching residue, the leaching rate of Zn can reach 98.60%, the enriched content of lead in the acid leaching residue is 36.54%. |
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