Sphalerite tailings are the most important type of waste in the mining district of Sardinia. This situation justifies the interest in the applicability of flotation as a remediation technique by which declassify the tailings (reducing the concentration of heavy metals). The flotation of mine tailings represents a novelty if aimed at environmental remediation. Instead, it is a widespread industrial practice for recovering secondary raw materials. In this case, the scientific aspects are rarely explored: this situation explains the limited number of cases examined, the review of which, however, represents a necessary premise for the research undertaken. Furthermore, the availability of industrial case demonstrates reprocessing is not only a technically possible process but also of economic interest. After an overview of the environmental problem in abandoned mining areas, the paper recalls the fundamental elements useful for developing a comparison between the main operating methods adopted in the flotation of Pb and Zn sulphides, both as primary ores (high and low Zn content) and as tailings. The case history also includes the treatment of Zn oxidized compounds. The comparison demonstrates that the treatment of sphalerite tailings can follow the same approach as that of low-grade primary ores, but with evident economic advantages, and allows achieving those, far greater, of the multiple environmental effects.

闪锌矿尾矿是撒丁岛采矿区最重要的废物类型。这种情况证明了人们对浮选作为一种修复技术的兴趣，该技术可通过该技术对尾矿进行分类（降低重金属的浓度）。如果以环境修复为目标，则矿山尾矿的浮选代表了一种新颖性。相反，这是回收次级原料的广泛工业实践。在这种情况下，很少探讨科学方面的情况：这种情况说明了所审查案件的数量有限，但是，进行审查是进行研究的必要前提。此外，工业案例的可用性表明，后处理不仅是技术上可行的过程，而且具有经济意义。在对废弃矿区的环境问题进行了概述之后，本文回顾了一些基本要素，这些要素有助于对浮选铅矿和硫化锌作为主要矿石（高锌含量和低锌含量）和磷矿石硫化锌所采用的主要操作方法进行比较。作为尾矿。病史还包括对Zn氧化化合物的处理。比较表明，闪锌矿尾矿的处理可以采用与低品位原矿相同的方法，但是具有明显的经济优势，并且可以实现多种环境影响。无论是作为原矿（高锌含量和低锌含量）还是作为尾矿。病史还包括对Zn氧化化合物的处理。比较表明，闪锌矿尾矿的处理可以采用与低品位原矿相同的方法，但是具有明显的经济优势，并且可以实现多种环境影响。无论是作为原矿（高锌含量和低锌含量）还是作为尾矿。病史还包括对Zn氧化化合物的处理。比较表明，闪锌矿尾矿的处理可以采用与低品位原矿相同的方法，但是具有明显的经济优势，并且可以实现多种环境影响。