The standard we often use to judge the floatability of minerals is the lubricity (ie, hydrophilicity and hydrophobicity) of the mineral surface. When a mineral surface is not easily wetted by water (hydrophobic), it is considered that the mineral (such as graphite , sulfur) is easy to float and float; when the surface of another mineral is wetted by water (hydrophilic) It is believed that this mineral (such as quartz ) is difficult to float or non-floating.
It is determined that the natural surface of the mineral is hydrophilic or hydrophobic, mainly determined by the nature of the force (such as bond energy) of the new surface after the mineral is broken.
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