Acid mist is generated during electrowinning in the final stage of hydrometallurgical production processes of metals including copper.
In electrowinning, oxygen bubbles are formed on the anode. Burst of these bubbles at the solution/air interface produces fine acid-containing liquid droplets which become airborne and disperse throughout the tankhouse. These droplets are known as acid mist and possess a serious health hazard to the operators. It also results in severe structural and equipment corrosion.
ChemShi™NF-100 is a combination of low foam surfactants to tackle issues with acid mist and cathode morphology. ChemShi™NF-100 has been shown to effectively reduce the mist as well as improving the morphology of the cathode. This enhances tankhouse environment through reduced dependency for starch addition in addition to suppressant of acid mist and acting as a smoothing agent.
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