Bulletin of the Chemical Society of Japan p. 2327 - 2334 (1987)
Update date:2022-08-17
Topics:
Koide, Yoshifumi
Hokonohara, Hisashi
Jinnai, Kuniaki
Yamada, Kimiho
Oxine-type surfactants(5-alkanoyl-8-quinolinol, RnOx, n=2, 8, 12, 18) and R12OOx were prepared and used as ion-flotation collectors.Cu2+, Fe3+, Zn2+, and Pb2+ were floated with R12Ox around a neutral pH, and the selective removal of Cu2+ from the mixture of these four metal ions was observed at pH 1.0.The floatability of Ga3+ was also high around the neutral pH, and the selective Ga3+ flotation from an Al3+(100 ppm)-Ga3+(20 ppm) mixture was observed by using R8Ox in the pH regions of 3-4 and 10-13.3 (0.2 M NaOH soln), while R12Ox did not float the Ga3+ so much at pH 10-13.3.By the addition of a small amount of RnPy to the R12Ox or by the solvent sublation, an effective flotation of Ga3+ was observed in the pH range of 10-13.3.The Ga3+ flotation was superior to the Ga3+ extraction in pH 2-4.However, in a strong alkaline region the flotability was lower than the extractability.
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