羧基捕收剂(油酸钠及其代用品)是黑色和有色金属氧化矿浮选中最重要的捕收剂。近年来,已用于处理多金属硫化——氧化混合矿及其它类型矿石的选矿联合流程中。油酸及其碱金属盐,属于典型的表面活性物质。在浮选水溶液中,羧基捕收剂能够以离子(RGOO~-,Me~+),分子及成份不同和结构复杂的缔合物(胶束)的形态存在。并能与金属阳离子作用,生成难溶的中性,硷性和酸性皂。而且,由于在矿浆液相中后面两种通常是以无浮选活性的形态存在,不仅引起矿物回收率的降低,而且还造成昂贵药剂油酸及其衍生 Carboxylate collectors (sodium oleate and its substitutes) are the most important collectors for the flotation of black and non-ferrous oxide ores. In recent years, it has been used in the beneficiation joint processes for handling polymetallic sulphide-oxide mixed ore and other types of ores. Oleic acid and its alkali metal salts are typical surface-active substances. In the flotation aqueous solution, the carboxyl collector can exist in the form of ion (RGOO ~ -, Me ~ +), different molecular and compositional and complex complex (micelles). And with the role of metal cations, resulting in insoluble neutral, alkaline and acidic soap. Moreover, the latter two, which are usually present in the flotation-free activity in the liquid phase of the slurry, not only cause a reduction in mineral recovery but also result in the production of the expensive agent oleic acid and its derivatives