矿浆电解的选择性

SELECTIVITY OF SORRY ELECTROLYSIS

本文从热力学上分析矿浆电解的选择性。计算在矿浆电解条件下阳极反应与阴极反应的电极电位，其排序与标准电极电位不同，黄铁矿电位高，因而难浸出。在与电位比它低的矿物共生时，由于原电池反应，能促进这些硫化物的氧化。而黄铁矿自身的氧化受到抑制．从热力学的角度看，PbS、Bi2S3、SnS、ZnS、Ni2S3等的矿浆电解均较容易，黄铜矿较难。矿浆电解过程有显著的除铁功能。

The selectivity of slurry electrolysis is analyzed. The potential values of anodic and cathodic reactions under slurry electrolysis conditions have been calculated. The sequence of potential values differs from the standard potential order. It is shown that slurry electrolysis of Ni2S3, ZnS, Bi2S3 , PhS, SnS is easier, while that of chalcopyrite is more difficult. /FeS2 is high, therefore leaching of FeS2 is difficult. When pyrite coexists with other ores whose potentials are lower than that of pyrite, the cell reaction can enhance oxidation of these ores, and okidation of pyrite itself is inhibited. The slurry electrolysis process has an ability to separate iron.