含锌冶金尘泥还原焙烧-磁选分离试验  

Experiment on Reduction Roasting-Magnetic Separation of Metallurgical Dust Containing Zinc

作　　者：施艳鸿 李奇勇 廖靖华[2,3] 李强 杨思伟[2] 周靖洋 SHI Yanhong;LI Qiyong;LIAO Chinghua;LI Qiang;YANG Siwei;ZHOU Jingyang(College of Environmental and Resource Science,Fujian Normal University,Fuzhou 350117,China;College of Resources and Chemical Engineering,San Ming University,Sanming 365004,China;Cleaner Production Technology Engineering Research Center of Fujian Universities,Sanming 365004,China)

机构地区：[1]福建师范大学环境与资源学院,福州350117 [2]三明学院资源与化工学院,福建三明365004 [3]清洁生产技术福建省高校工程研究中心,福建三明365004

出　　处：《有色金属工程》2024年第2期136-141,共6页Nonferrous Metals Engineering

基　　金：中央引导地方科技发展专项(2022L3027);福建省科技厅引导性项目(2020Y0090、2022Y0075);闽江源生态保护研究院培育项目(MJ2021002)。

摘　　要：为实现钢铁企业含锌冶金尘泥低碳环保高效的资源化利用,对铁含量为30.38%、锌含量为4.79%的含锌冶金尘泥进行还原焙烧-磁选分离研究。结果表明,该含锌冶金尘泥直接磁选难以实现锌铁有效分离,在焙烧温度950℃、焙烧时间20 min、磁选强度100 mT等条件下,磁选精矿铁回收率为79.50%、铁含量为57.00%、锌含量为2.45%,磁选尾矿锌回收率为71.06%、锌含量为9.92%、铁含量为16.81%,锌铁分离效果较好。磁选产物中精矿主要以单质Fe为主,尾矿主要由SiO_(2)与ZnO等物相组成。To realize the low-carbon,environmentally protection and efficient resource utilization of metallurgical dust containing zinc in iron and steel enterprises,the reduction roasting-magnetic separation of metallurgical dust containing zinc with iron content of 30.38%and zinc content of 4.79%was studied.The experimental results show that the direct magnetic separation of metallurgical dust containing zinc is difficult to achieve effective separation of zinc and iron.Under the conditions of roasting temperature of 950°C,roasting time of 20 min and magnetic separation intensity of 100 mT.The iron recovery rate of magnetic separation concentrate is 79.50%,the iron content is 57.00%,and the zinc content is 2.45%.The zinc recovery rate of magnetic separation tailings is 71.06%,the zinc content is 9.92%,and the iron content is 16.81%.The separation rates of zinc and iron is better.The concentrate in the magnetic separation product is mainly composed of elemental Fe,and the tailings are mainly composed of SiO_(2)and ZnO.

关 键 词：含锌冶金尘泥 资源化利用 还原焙烧 磁选 锌铁分离 

分 类 号：TD982[矿业工程—选矿]