On Sulfuric Acid Leaching in Magnetized Reduction of Zinc from Calcines
CAO Zi-yu
CENG Yong-ming
Abstract：In order to address the problem of iron flowing into solution in profusion in the process of zinc reduction which causes environmental pollution,this paper conducts a systematic research into the process of sulfuric acid leaching in reducing zinc from calcines. By adopting single-factor conditional testing,this paper thoroughly investigates various factors that affect the sulfuric acid leaching including the initial acidity,liquid-solid ratio,temperature and duration. The optimized testing shows that under the optimized condition with the initial acidity of 120 g/L,at liquid-solid ratio of 7∶1,at a temperature of 60℃and in 2 hours the zinc leaching rate reaches 88.5%,the iron leaching rate 10.6% and the leached iron is almost totally ferrous iron. The result explains one step up to zinc calcine magnetized reduction of a reduction.
Keywords：zinc hydrometallurgysulfuric acid leachingzinc and iron separation
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7-12,17 )