Cassiterite Flotation with Sulphosuccinamate Collector

Abstract

Sulphosuccinamate is one of the best collectors used for flotation of cassiterite. The flotation results show that sulphosuccinamate displays strong collection and selectivity for cassiterite at lower dosage. The influence of other factors, such as depressants and metal cations on the cassiterite flotation has also been investigated. Studies on the mechanism of flotation with sulphosuccinamate, through zeta potential, infrared spectrometer, XPS and molecular orbital theory indicate that multi-ring chelates are formed on the cassiterite surface through chemical bonding between active stannum sites and oxygens in carboxylic and sulphonic acid groups of sulphosuccinamate.

Effect of Al (III) Ions on the Separation of Cassiterite and Clinochlore Through Reverse Flotation

“…Especially, at Al (III) ions concentration above 2.4 × 10 −4 mol/dm 3 , the recovery of cassiterite is below 179 10% while that of clinochlore remains above 70%. This finding, which is in good agreement with 180 previous studies [29,30]…”

“…Especially, at Al (III) ions concentration above 2.4 × 10 −4 mol/dm 3 , the recovery of cassiterite is below 10% while that of clinochlore remains above 70%. This finding, which is in good agreement with previous studies [29,30], demonstrates that Al (III) ions inhibit the floatability of cassiterite. The effect of pH on the flotation recoveries of cassiterite and clinochlore in the presence of 2.4 × 10 −4 mol/dm 3 Al (III) ions using NaOL as a collector is shown in Figure 4b.…”

“…There are several studies founding that Al (III) ions can act as a depressant on cassiterite flotation. Zeng et al [29] and Choi et al [30] studied the effects of metal ions on cassiterite flotation with sulphosuccinamate as a collector and they both found that Al (III) ions could inhibit the floatability of cassiterite. However, no one has reported the effect of Al (III) ions on the floatability of cassiterite when NaOL is used as a collector.…”