The recycling of spent alkaline and zinc-carbon batteries aims to minimize the waste, to avoid environmental pollution, and to provide valuable secondary raw materials. The paper presents the development of a new technology, based on corona-electrostatic separation, for the recovery of zinc and brass granules from the coarse fraction obtained in the recycling process of alkaline and zinc-carbon batteries. A free-fall electrostatic separator was equipped with an extended needle-type corona electrode, to strongly charge by ion bombardment all the components of the granular mixture. The difference in density between metallic granules (zinc and brass) and other non-metallic components leads to different trajectories and makes possible their collection as separated fractions. The recovery rate and purity of the metallic fraction - as high as 99% and 92% respectively, was obtained with a 52% recovery rate the non-metallic fraction. A new electrode configuration was employed to improve the granule collection efficiency, leading to a significant increase in both the recovery rate of non-metallic fraction, and the purity of the metallic fraction - 97.6% and 99.2% respectively. The experimental results show that the proposed corona-electrostatic technology allows the recovery of about 390 kg of zinc and brass with over 99% purity from 1,000 kg of granular mixture, with an energy consumption of about 48 kWh. The corona-electrostatic technology represents a competitive alternative for the recovery of zinc and brass granules from spent alkaline and zinc-carbon batteries.

废旧碱性电池和锌碳电池的回收利用旨在最大程度地减少浪费，避免环境污染并提供有价值的二次原料。本文介绍了一种基于电晕-静电分离的新技术的开发，该技术用于从碱性和锌碳电池回收过程中获得的粗级分中回收锌和黄铜颗粒。自由落体式静电分离器配备有扩展的针型电晕电极，可通过离子轰击使颗粒混合物的所有组分强烈带电。金属颗粒（锌和黄铜）与其他非金属成分之间的密度差异导致轨迹不同，并使它们有可能作为分离的馏分收集。金属馏分的回收率和纯度分别高达99％和92％，其中非金属馏分的回收率为52％。采用新的电极配置来提高颗粒收集效率，从而显着提高了非金属级分的回收率和金属级分的纯度-分别为97.6％和99.2％。实验结果表明，所提出的电晕静电技术可从1,000千克颗粒混合物中回收约390千克锌和黄铜，纯度超过99％，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。以52％的回收率获得非金属馏分。采用新的电极配置来提高颗粒收集效率，从而显着提高了非金属级分的回收率和金属级分的纯度-分别为97.6％和99.2％。实验结果表明，所提出的电晕静电技术可从1,000千克颗粒混合物中回收约390千克锌和黄铜，纯度超过99％，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。以52％的回收率获得非金属馏分。采用新的电极配置来提高颗粒收集效率，从而显着提高了非金属级分的回收率和金属级分的纯度-分别为97.6％和99.2％。实验结果表明，所提出的电晕静电技术可从1,000千克颗粒混合物中回收约390千克锌和黄铜，纯度超过99％，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。导致非金属馏分的回收率和金属馏分的纯度均显着提高，分别为97.6％和99.2％。实验结果表明，所提出的电晕静电技术可从1,000千克颗粒混合物中回收约390千克锌和黄铜，纯度超过99％，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。导致非金属馏分的回收率和金属馏分的纯度均显着提高，分别为97.6％和99.2％。实验结果表明，所提出的电晕静电技术可从1,000千克颗粒混合物中回收约390千克锌和黄铜，纯度超过99％，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。000 kg颗粒状混合物，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。000 kg颗粒状混合物，能耗约48 kWh。电晕静电技术代表了从用过的碱性电池和锌碳电池中回收锌和黄铜颗粒的竞争性选择。