Graphic Conclusions of this particular set of flotation tests:
Copper – Irrelevant of pH, with enough float time and reagents, you usually reach a terminal bulk rougher Cu recovery in the low 90s (Green Box)
– pH 10.3 gives you that terminal recovery in less mass (9%), more selectively, at a higher Conc grade (2.5%) VS the rest.

Moly – pH 10.3 and under, with enough float time and reagents, you reach a terminal bulk rougher Mo recovery >95% VS <95% at higher pH (Green Box)
– pH 7.4 gives you that terminal recovery in less mass (8%), more selectively, at a higher Conc grade (1.1%) VS the rest.