湿法冶金2026，Vol.45Issue(1)：18-24,7.DOI:10.13355/j.cnki.sfyj.2026.01.003
乳酸介质中冶金尘泥的选择性浸锌行为与机制研究
Selective Leaching Behavior and Mechanism of Zinc from Metallurgical Dust Sludge in Lactic Acid Medium
摘要
Abstract
Using lactic acid solution as the leaching agent,selective leaching of zinc from metallurgical dust collected from a steel plant in Shanxi was investigated.The effects of leaching time,leaching temperature,liquid volume to solid mass ratio and lactic acid concentration on the leaching effect were investigated,and the leaching mechanism was explored.The results show that under the optimal leaching conditions of lactic acid concentration of 3％,leaching temperature of 20 ℃,leaching time of 5 min,and liquid volume to solid mass ratio of 10 mL/1 g,the leaching rates of zinc and iron are 9156％and 4.69％,respectively,achieving selective leaching of zinc.In the leaching solution,zinc primarily exist in the forms of Zn[CHsCH(OH)COO]+and Zn2+,while in the leach residue,zinc is mainly present as zinc ferrite.The weak acidic environment of the leaching system can effectively suppress the dissolution of iron.关键词
二次锌资源/冶金尘泥/乳酸/选择性浸出Key words
secondary zinc resources/metallurgical dust and sludge/lactic acid/selective leaching分类
矿业与冶金引用本文复制引用
牛福生,徐成龙,张晋霞..乳酸介质中冶金尘泥的选择性浸锌行为与机制研究[J].湿法冶金,2026,45(1):18-24,7.基金项目
河北省教育厅重点项目(ZD2022059). （ZD2022059）
