The authors prove connection between the surface activity relative to gas-liquid interface and collecting ability in flotation for derivatives of xanthogenates (xanthogenates of heavy metals). It is shown that at nonstoichiometric ratio of xanthogenate and metallic salt concentrations, colloid particles are formed in solution. The influence of deviation from the nonstoichiometric ratio of xanthogenate and metallic salt concentration on the spreading velocity of the colloid system over water surface and on the collecting activity of the system is studied. It is found that the spreading velocity of derivatives of xanthogenates over water surface and their collecting activity depends on the duration of aging of the colloid system.

中文翻译：

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黄原酸盐的浮选活性

作者证明了相对于气液界面的表面活性与黄原酸盐衍生物（重金属黄原酸盐）的浮选收集能力之间存在联系。结果表明，在黄原酸盐和金属盐浓度的非化学计量比下，胶体颗粒在溶液中形成。研究了偏离黄原酸盐和金属盐浓度的非化学计量比对胶体系统在水面上的扩散速度和系统收集活性的影响。发现黄原酸盐衍生物在水面上的扩散速度及其收集活性取决于胶体系统老化的持续时间。