The main role of zinc sulfate in mineral processing is to select zinc ores and resist zinc-containing minerals. Usually, it has better resistance in alkaline slurry.
The main role of zinc sulfate in mineral processing is to select zinc ores and resist zinc-containing minerals. Usually, it has better resistance in alkaline slurry. The higher the pH value of the slurry, the more obvious the resistance is, which is beneficial to mineral processing. It is also a commonly used mineral processing material with low price and good effect. It is an essential material in mineral processing.
Principle of action of zinc sulfate: Pure zinc sulfate is white crystal, easily soluble in water, and is an inhibitor of sphalerite. It usually only has inhibitory effect in alkaline slurry. The higher the pH of the slurry, the more obvious its inhibitory effect. . Zinc sulfate produces the following reaction in water:
ZnSO4＝Zn2++SO42-
Zn2++2H20=Zn(OH)2+2H+
Zn(OH)2 is an amphoteric compound that dissolves in acid to form a salt.
Zn(OH)2+H2S04＝ZnSO4+2H2O
In alkaline medium, HZnO2- and ZnO22- are obtained. Their adsorption to minerals enhances the hydrophilicity of mineral surfaces.
Zn(OH)2+NaOH=NaHZnO2+H2O
Zn(OH)2+2NaOH=Na2ZnO2+2H2O
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