摘要
采用有机酸浸取工艺对比了草酸、柠檬酸、乙酸、丙酸、丁酸和戊酸6种有机酸对某转炉粉尘中铁和锌的浸出效果,并进一步对丁酸浓度和液固化学计量比进行了优化探索。结果表明:6种酸对锌和铁的浸出行为不同,草酸极易在粉尘表面生成沉淀物阻碍浸出,柠檬酸具有络合性有利于浸出但锌的浸出选择性差,其余4种烷基酸随碳链增加对锌的浸出选择性增大,到丁酸效果较好。对丁酸浸出条件进行初步优化后,锌和铁的浸出率分别为51.2%和0.5%,浸出液中锌与铁的质量比为12.6,并设计了丁酸浸出工艺流程,可为未来处理钢铁含锌冶金粉尘提供参考依据。丁酸的高效选择性具有良好的应用前景,对我国钢铁企业实施可持续发展战略具有十分重要的现实意义。
The organic acids leaching process was performed to compare the leaching efficiencies of zinc and iron from a basic oxygen steelmaking dust by oxalic acid,citric acid,acetic acid,propionic acid,butyric acid,and valeric acid and the effect of acid concentration and liquid/solid stoichiometric ratio was further studied.The results showed that the six organic acids had different leaching behaviors for zinc and iron and oxalic acid was easy to form sediment on the dust surface to hinder the leaching.Citric acid had complexing properties,which was conducive to the leaching,but the leaching selectivity of zinc is poor.The leaching selectivity of the other four alkyl acids increases with the increase of carbon chain,and the effect of butyric acid was better.The preliminary optimization of butyric acid leaching led to zinc and iron leaching rate of 51.2%and 0.5%,respectively,and the mass ratio of zinc to iron in the leachate was 12.6.A butyric acid leaching technology was designed to provide a reference for future treatment of zinc-containing steelmaking dust.The high-efficiency selectivity of butyric acid has good potential for application,and it is significant for the steel industries to implement sustainable development strategy.
作者
王哲
王京秀
林银河
尹国亮
刘淑兰
罗林根
WANG Zhe;WANG Jingxiu;LIN Yinhe;YIN Guoliang;LIU Shulan;LUO Lingen(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing 100083,China;Department of Materials and Chemical Engineering,Yibin University,Yibin 644007,Sichuan,China;Institute of Yibin Tianyuan Group Co.,Ltd.,Yibin 644007,Sichuan,China;College of Physical Science and Technology,Tangshan Normal University,Tangshan 063000,Hebei,China;Resource Application and Alloy Materials Division,China Iron and Steel Research Institute Group,Beijing 100081,China)
出处
《有色金属科学与工程》
CAS
北大核心
2021年第6期1-8,共8页
Nonferrous Metals Science and Engineering
基金
国家自然科学基金资助项目(U1960101)
重庆市科技局资助项目(cstc2020jcyj-msxmX0060)
河北省自然科学基金资助项目(E2019105073)
唐山师范学院科学研究基金资助项目(2016A06)。
关键词
钢铁粉尘
常温酸浸
有机酸
丁酸
锌
铁
steel dusts
room temperature acid leaching
organic acid
butyric acid
zinc
iron
