Nash sodium hydrosulfide
Sodium hydrosulfide prevents further oxidation of sulfide minerals in the pulp, preserving their original floatability. It forms a protective film on mineral surfaces, preventing contact with oxygen.
In antimony ore flotation, sodium hydrosulfide suppresses gangue minerals, improving the concentration ratio of antimony ore. It forms a hydrophilic layer on gangue mineral surfaces through adsorption, reducing their floatability.