Concentration of Zinc and Separation of Ferric Iron from the Biochemical Lixivium of Low-grade Zinc Sulfide by Solvent Extraction
ZOUXing ZHU Wangxi, ZHU Rong, XU DianniangMetallurgy School, University of Science and Technology Beijing, Beijing 100083, ChinaBeijing General Research Institute of Mining and Metallurgy, Beijing 100044, China
The D2EHPA-TOA organic phase was used as the solvent-extraction system for the concentration of zinc and the separation of ferric ion from the biochemical lixivium of low-grade zinc sulfide. The results indicate that the system can improve evidently the performances for zinc extraction and iron removal from zinc sulfide. The zinc saturated capacity inceases by 12%. The complete stripping of zinc from the zinc-loaded D2EHPA-TOA organic phase can be achieved by 0.25 mol/L H2SO4 through one stage, while -68% of ferric iron is stripped from the Fe-loaded D2EHPA-TOA organic phase only by 4 mol/L H2SO4 through one stage.
【CateGory Index】： TF813