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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Extraction of zinc from zinc ferrites by alkaline leaching: enhancing recovery by mechanochemical reduction with metallic iron
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Extraction of zinc from zinc ferrites by alkaline leaching: enhancing recovery by mechanochemical reduction with metallic iron

机译：用碱性浸出从铁氧体锌的提取：用金属铁改进机械化学减少回收

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摘要

This study evaluates the efficiency of using mechanochemical reduction to assist the extraction of zinc from zinc ferrites by alkaline leaching. The transition of zinc ferrite into a metastable state after mechanochemical reduction with metallic iron contributes to the ready dissolution of zinc from the activated zinc ferrites in alkaline solution. Zinc ferrites were mechanochemically reduced under conditions of Fe:ZnFe_2O_4 mole ratio of 2:1, using 5 mm diameter stainless steel balls as the activation medium at a mass ratio of balls to raw materials of 25:1. Subsequent leaching in 6 mol/L NaOH solution at 90°C resulted in more than 70% Zn extraction. These results may be used to further develop a hydrometallurgical process for recovering zinc from zinc ferrites in alkaline solution.
机译：本研究评估了使用机械化学减少的效率，以通过碱性浸出来提取来自铁氧体的锌锌。 金铁素体的转变为金属铁的机械化学减少后的亚稳态有助于碱性溶液中活性锌铁氧体的锌的准备溶解。 在Fe：ZnFe_2O_4摩尔比为2：1的条件下，使用5mm直径不锈钢球作为活化介质，以25：1的原料的质量比，使用5mm直径的不锈钢球。 随后在90℃下在6mol / L NaOH溶液中浸出导致70％以上的Zn萃取。 这些结果可用于进一步开发一种用于从碱溶液中从铁氧体中回收锌的液压冶金方法。

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