The iron-and zinc-bearing dust generated during steelmaking is not only vast in quantity but also highly complex in composition.The abundant zinc content poses a significant threat to the smooth operation and lifespan of blast furnaces,thus rendering it unsuitable for direct re-cycling within the raw material system.Nevertheless,the dust is rich in valuable metallic elements such as Fe,Zn,and Pb,offering consider-able potential for recycling.Consequently,the efficient and sustainable utilization of iron-and zinc-bearing dust has become a critical issue that steel enterprises urgently need to address,and the selection of appropriate disposal methods is paramount.It delves into the principles under-lying the treatment of such dust using pyrometallurgical techniques and provides a comprehensive overview of the current processes,develop-ment trends,and respective strengths and weaknesses of pyrometallurgical treatments for zinc-bearing dust in steel enterprises.Additionally,it offers an analysis of the challenges encountered in processing iron-and zinc-bearing dust using pyrometallurgical processes,along with corre-sponding countermeasures.The objective is to provide steel enterprises with valuable insights for developing scientific dust disposal strategies and selecting the most suitable treatment processes.
关键词
含铁含锌除尘灰/火法冶金工艺/工艺原理/技术发展
Key words
iron and zinc-bearing dust/pyrometallurgical process/technical principle/technological development
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