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在浮选易浮的锡矿石时,可以采用脂肪酸及其衍生物作为捕收剂,但对于浮选中等的而特别是难浮的矿石来说,它们就不适应了,因为它们对矿浆中存在的碱土金属离子与游离的重金属离子是非常敏感而没有选择性的。硫代衍生脂肪酸是比较有前途的:烷基硫酸盐R-O-SO_3Na和烷基磺酸盐R-SO_3Na,其中也包括硫代衍生羟基羟酸(例如,琥珀酸),因为这些酸对锡来说具有相当显著的生成络合物的性质以及与脂肪酸相比在水中易溶得多。
In the flotation of floatable tin ores, fatty acids and their derivatives can be used as collectors, but they are unsuitable for flotation of medium, especially hard-to-float ores because of their effect on the presence of ore The alkaline earth metal ions and free heavy metal ions are very sensitive and not selective. Thio-derived fatty acids are more promising: alkyl sulfate RO-SO3Na and alkyl sulfonate R-SO3Na, which also include thio-derived hydroxycarboxylic acids (eg, succinic acid), since these acids are effective for tin Has a rather pronounced property of generating complexes and is much more soluble in water than fatty acids.