有机二元酸对长石、石英浮选分离的作用及其机理

The Effects of Organic Dibasic Acids on Floatation Behaving of Feldspar and Quartz and its Mechanism

在十二胺捕收剂体系中,研究了丙二酸、丁二酸、己二酸、癸二酸和草酸对长石和石英浮选行为的影响。结果表明:在十二胺体系中,pH=2的条件下,有机二元酸对长石和石英都有活化作用。有机二元酸对长石的活化强弱顺序依次为草酸、丙二酸、丁二酸、己二酸和癸二酸。有机二元酸对石英的活化强弱顺序依次为丙二酸、丁二酸、己二酸、癸二酸和草酸。草酸可以作为在十二胺体系中,在强酸性条件下,实现长石与石英的浮选分离的有效调整剂。

The effects of propanedioic acid,succinic acid,hexanedioic acid,sebacic acid and oxalic acid on floatation performance of feldspar and quartz in dodecyl amine system were investigated.The results showed that organic dibasic acids were activators to both feldspar and quartz in dodecyl amine system at pH 2.The active strong-to-weak sequence of organic dibasic acid on feldspar is oxalic acid,propanedioic acid,succinic acid,hexanedioic acid and sebacic acid.The active strong-to-weak sequence of organic dibasic acid on quartz is propanedioic acid,succinic acid,hexanedioic acid,sebacic acid and oxalic acid.In dodecyl amine system,oxalic acid can be as the effective modifier to float feldspar from quartz in dodecyl amine system at pH 2.