镀锌钢中锌的电沉积

Ruqia Hisham Abd Ulster, R. S. Yaseen, F. F. Sayyid
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引用次数: 0

摘要

本文研究了电压和浓度对工业废钢(镀锌钢)电沉积法制备的锌粉纯度、形貌和表观密度的影响。电沉积工艺采用浓度为0.2M的硫酸H₂SO₄和七水硫酸锌ZnSO₄。3种不同浓度(100、75、50)M的7H₂O,沉积时间为10 min,使用3个电极,电极间距均为3cm, 3种浓度下溶液的PH分别为0.3、0.4、0.6。所用电压分别为(2、3、4、6、8、11)v。首先,所有实验的锌粉形貌均为树枝状。电压对表观密度的影响范围为:2V ~ 11V, 100M范围为1.2 ~ 0.71 gm. /cm3, 75M范围为0.94 ~ 0.60 gm. /cm3, 50M范围为0.80 ~ 0.50 gm. /cm3。在相同电压2V下,锌离子浓度为89.51、92.78和95.48,纯度随锌离子浓度的降低而升高。在50M浓度下,在6V条件下锌粉的最高纯度为95.58。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrodeposition of Zinc from Galvanized Steel
In this work, the effect of voltage and concentration on the properties of zinc powder (purity, morphology, and apparent density) that produced by electrodeposition process from industrial waste (galvanized steel) was studied. In Electrodeposition process, used sulfuric acid H₂SO₄ with concentration 0.2M and zinc sulphate heptahydrate ZnSO₄.7H₂O in three different concentrations (100, 75, and 50) M, The time of deposition is 10 mins, three electrodes were used, the distance between electrodes was 3cm for all experiments and the PH of solutions were 0.3, 0.4, 0.6 for three concentrations respectively. The voltages that used were (2, 3, 4, 6, 8, and11) V. First of all, the morphology of zinc powder for all experiments was dendritic. The effect of voltage on the apparent density in ranging was from 1.2 to 0.71 gm. /cm3 in 100M for voltages from 2V to 11V, it was from 0.94 to0.60 gm. /cm3 in 75M, and it was from 0.80 to 0.50 gm. /cm3 in 50M concentration. The purities increased with decrease of zinc ion concentration were (89.51, 92.78, and 95.48) for three different concentrations of same voltage 2V. The highest purity of Zn powder was 95.58 in 6V in 50M concentration.
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