An Experimental Study on Partitioning of Zn, Fe, Mn and Cd between Sphalerite and Aqueous Chloride Solution
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The distribution coefficients of Zn, Fe, Mn and Cd between sphalerite and aqueous chloride solution were experimentally determined at T=400 and 600°C and P=lkbar under relatively reducing conditions. The experiments were conducted for the following three systems: ZnS-FeS-(Zn, Fe)CL<SUB>2</SUB>-H<SUB>2</SUB>O, ZnS-MnS-(Zn, Mn)CL<SUB>2</SUB>-H<SUB>2</SUB>O and ZnS-CdS-(Zn, Cd)CL<SUB>2</SUB>-H<SUB>2</SUB>O systems. The maximum contents of FeS, MnS and CdS in sphalerite were 49, 19 and 24mo1% at 400°C and 52, 10 and 15mol% at 600°C, respectively. The elements are preferentially partitioned into sphalerite in the order of Cd≥Zn≥Fe≥Mn. This indicates that more covalent elements are preferentially incorporated into sphalerite. The partitioning of the elements becomes more marked with decreasing temperature.
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