Abstract:
The effect of sodium hexametaphosphate, sodium pyrophosphate and sodium tripolyphosphate on flotation behavior of fluorite and calcite was investigated through single mineral flotation experiments. The results show that when the modified fatty acid DW-1 is used as the collector, the three phosphates present a certain inhibition to fluorite and calcite, and the inhibition ability decreases in the order of sodium hexametaphosphate > sodium tripolyphosphate > sodium pyrophosphate. The inhibition of sodium hexametaphosphate has no selectivity; sodium pyrophosphate and sodium tripolyphosphate show better selective inhibition to calcite at pH > 9, while have little influence on floatability of fluorite, so it is expected to achieve their flotation separation.