Hydrothermal pretreatment of copper concentrates in acidified copper sulfate solution has been known since the beginning of the last century as an approach to the chemical enrichment of copper concentrates. While the pilot-scale demonstration of this approach exists, detailed investigations into the underlying chemical interactions that form the basis of this technology are rarely available in open sources. This review attempts to summarize research data on the hydrothermal treatment of sulfide minerals for over a century. It focuses on the hydrothermal interactions between acidified copper sulfate solution and sulfide minerals, which are of key significance for the hydrothermal enrichment process, including the main copper minerals (CuFeS2, Cu5FeS4, CuS, Cu2S) and those (e.g., ZnS, FeS2, and PbS) that are often associated with copper concentrates as penalty impurities. Studies on the hydrothermal enrichment of various sulfide raw materials (including copper concentrates) have shown that parameters such as temperature, the concentration of reagents, and the molar ratio of Cu in solution to Cu in solid, among others, influence the efficiency of the process.

中文翻译：

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在 H2SO4 介质中使用 Cu（II） 溶液对硫化物矿物进行水热处理的重要综述


自上世纪初以来，在酸化硫酸铜溶液中对铜精矿进行水热预处理已成为铜精矿化学富集的一种方法。虽然这种方法存在中试规模的演示，但对构成该技术基础的潜在化学相互作用的详细研究很少在开源中提供。本文试图总结一个多世纪以来硫化物矿物水热处理的研究数据。它重点介绍酸化硫酸铜溶液和硫化物矿物之间的热液相互作用，这对热液富集过程具有关键意义，包括主要的铜矿物（CuFeS2、Cu5FeS4、CuS、Cu2S）和那些通常作为惩罚杂质与铜精矿相关的矿物（例如 ZnS、FeS2 和 PbS）。对各种硫化物原料（包括铜精矿）的水热富集研究表明，温度、试剂浓度以及溶液中 Cu 与固体中 Cu 的摩尔比等参数都会影响该过程的效率。