Abstract

The behavior of nickel sulfide (Ni₃S₂), copper sulfide (Cu₂S), and their mixture (Ni₃S₂ : Cu₂S = 1 : 1) is studied under the leaching conditions in sulfuric acid solutions. The effects of the acid concentration, the temperature, and the leaching time on the dissolution kinetics and the phase compositions of the leaching residues of nickel sulfide Ni₃S₂ and the sulfide mixture are determined. The degrees of extraction of copper and nickel to the solution during the leaching of the individual sulfides and their mixture are compared. Only nickel passes to a solution upon the leaching of the mixture of the sulfides, and copper is absent from the solution until the complete dissolution of nickel sulfide.

中文翻译：

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镍和铜硫化物及其混合物在硫酸溶液中的行为

摘要

在硫酸溶液中浸出条件下，研究了硫化镍（Ni ₃ S ₂），硫化铜（Cu ₂ S）及其混合物（Ni ₃ S ₂：Cu ₂ S = 1：1）的行为。酸浓度，温度和浸出时间对硫化镍Ni ₃ S ₂浸出残余物的溶解动力学和相组成的影响确定硫化物混合物。比较了各硫化物及其混合物浸出过程中铜和镍向溶液中的萃取程度。硫化物混合物浸出后，只有镍传递到溶液中，溶液中没有铜，直到硫化镍完全溶解为止。