Sodium hydrosulfide hydrophilic film

Sodium hydrosulfide suppresses the flotation of pyrite in certain sulfide ore flotation circuits, allowing other target minerals to float preferentially. It forms a hydrophilic film on pyrite surfaces, reducing their floatability.
It promotes the oriented arrangement of collectors on the mineral surface, enhancing collection efficiency. By altering the mineral’s surface microstructure, it facilitates ordered collector adsorption.
In molybdenum ore flotation, sodium hydrosulfide modulates the pulp environment to improve flotation selectivity, creating conditions conducive to separating molybdenite from other minerals.