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In this paper,FXL-14 (tetradecyl iminobimetyl phosphonic acid) as a collector for floating wolframite without Pb~(2+) and itsadsorption mechanism were studied by electrochemical method.Flotation experiment results showed that in the wide range of pHvalue activation of FXL-14 collecting wolframite with Pb~(2+) was not needed.Wolframite—carbon paste electrode andsmall-amplitude triangular potential sweep were used to measure the electro-double-layer capacitance of wolframite in theFXL-14 solution (with and without of the presence of 1×10~(-4)MPb~(2+)).It is showed that in spite of concentration of Pb~(2+) in theflotation processing,with FXL-14 (800mg/l) the electro-double-layer capacitance was bigger than with FXL-14 (800mg/l)and Pb~(2+).
In this paper, FXL-14 (tetradecyl iminobimetyl phosphonic acid) as a collector for floating wolframite without Pb ~ (2+) and its adsorption mechanism were studied by electrochemical method. Flotation experiment results showed that in the wide range of pHvalue activation of FXL- 14 collecting wolframite with Pb ~ (2+) was not needed. Wolframite-carbon paste electrode andsmall-amplitude triangular potential sweep were used to measure the electro-double-layer capacitance of wolframite in the FXL-14 solution (with and without of the presence of 1 × 10 -4 MPb ~ (2 +)). It is showed that in spite of concentration of Pb 2+ in the processing, with FXL-14 (800 mg / l) the electro-double- layer capacitance was bigger than with FXL-14 (800 mg / l) and Pb ~ (2+).