Effects of Metallic Ions on the Flotation of Spodumene and Beryl

Effects of multivalent metallic cations, such as Ca^2＋ and Fe^3＋, on the flotation of spodumene and beryl were studied. The results show that Fe^3＋ and Ca^2＋ exhibit efficient activation on the flotation of spodumene and beryl. The activation of Fe^3＋ happens quite well within a pH range of 6-9 whil...

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Bibliographic Details
Published in:Journal of China University of Mining and Technology 2007-03, Vol.17 (1), p.35-39
Main Authors: WANG, Yu-hua, YU, Fu-shun
Format: Article
Language:English
Subjects:
activation
beryl
flotation
metallic ions
spodumene
TD 923
单链结构
浮游选矿
金属离子
锂辉石
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Summary:Effects of multivalent metallic cations, such as Ca^2＋ and Fe^3＋, on the flotation of spodumene and beryl were studied. The results show that Fe^3＋ and Ca^2＋ exhibit efficient activation on the flotation of spodumene and beryl. The activation of Fe^3＋ happens quite well within a pH range of 6-9 while the concentration of Fe^3＋ is 35 mg/L. Efficient activation of Ca^2＋ takes place over at a pH over 11.6 at a concentration of 140 mg/L. The zeta potential of beryl and spodumene shifts slightly to positive values when activated by Ca^2＋, but markedly by Fe^3＋. New stretching frequencies of 1594.24 cm^-1 and 1587.13 cm^-1 have been found in the FTIR spectra of the two minerals after their interaction with Fe^3＋ and the collector. These new stretching frequencies are the asymmetric stretching frequencies of COO^- （carboxyl anion）, so thecollector may be chemically absorbed on the surface of Fe^3＋-activated beryl and spodumene.
ISSN:1006-1266
DOI:10.1016/S1006-1266(07)60008-X