Iron removal from electrolytic zinc

2009-04-07View Original

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In zinc production, iron removal is very important. Alkaline precipitation using hydrogen peroxide becomes a bottleneck due to the adsorption by colloids, **reducing the recovery rate. According to available information, iron precipitated from aqueous solutions of phosphates exhibits selective properties, is easy to filter, and has low affinity for cations. The precipitation rate of iron phosphate is very fast; it is essentially complete within 20 to 60 minutes. Moreover, this precipitant can be easily regenerated. Has anyone used this method? Perhaps we could have an in-depth discussion on it

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Iron removal from electrolytic zinc

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