Polyether-tethered imidazole-2-thiones, imidazole-2-selenones and imidazolium salts as collectors for the flotation of lithium aluminate and spodumene
Sophie Acker, Jan C. Namyslo, Martin Rudolph, Franziska Strube, Ursula E. A. Fittschen, Hao Qiu, Daniel Goldmann, Andreas Schmidt
Abstract
C NMR spectroscopy as well as by Rh and Ir complex formation, were used as starting materials for the preparation of the corresponding imidazole-2-thiones and imidazole-2-selenones. Flotation experiments in Hallimond tubes under variation of the air flow, pH, concentration and flotation time were performed. The title compounds proved to be suitable collectors for the flotation of lithium aluminate and spodumene for lithium recovery. Recovery rates up to 88.9% were obtained when the imidazole-2-thione was used as collector.
Topics & Concepts
ImidazoleChemistryLithium (medication)SpodumeneSalt (chemistry)AmphiphileInorganic chemistryOrganic chemistryMedicineCeramicCopolymerPolymerEndocrinologyExtraction and Separation ProcessesIonic liquids properties and applicationsAdsorption and biosorption for pollutant removal