Electrowinning of zinc from alkaline solutions at high current densities
Electrowinning of zinc from alkaline solutions at high current densities
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DOI：
10.1007/bf01012487
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发表时间：
1990
影响因子：
2.9
通讯作者：
J. St-Pierre;D. Piron
中科院分区：
文献类型：
--
作者：
J. St-Pierre;D. Piron
随着工业生产成本的不断增加和国际竞争的加剧，对锌提取替代技术的研究变得越来越重要。在这些可能性中，碱性溶液中的电解沉积以前被认为是最有前途的[1]。它可以将生产率提高到1000 A m-2，同时将能耗降低到1.75 kWh kg-1 [2]。然而，在加拿大，能源成本低，更高的生产力比减少能源消耗更受欢迎。为了确定生产率可能的最大增加，同时保持比能耗与实际工业过程中的比能耗相当，需要高电流密度下的数据，这些数据在文献中不可用。在高电流密度下进行了实验，以获得比能量计算所需的电池电压和电流效率数据。还强调了存款形态对获得的比能量的重要性，这在以前没有明确说明[1，2]。
The growing cost of industrial production and international competition give an increased importance to research in alternative zinc extraction technologies. Among the possibilities, electrowinning in alkaline solutions was presented previously as the most promising [1]. It offers the possibility of increasing productivity up to 1000 A m-2 and at the same time lowering energy consumption to 1.75 kWh kg-1 [2]. However, in Canada, where energy costs are low, higher productivity is favoured over decreased energy consumption. To determine the maximum increase of productivity possible while keeping a specific energy consumption comparable to that in the actual industrial process, data at high current densities are necessary and these are not available in the literature. Experiments have been done at high current densities to obtain cell voltage and current efficiency data necessary for specific energy computations. The importance of the deposit morphology on the specific energy obtained, which was not previously stated clearly [1, 2], is also emphasized.