首页|微波焙烧对钢铁行业含锌冶金尘泥锌铁分离的影响

微波焙烧对钢铁行业含锌冶金尘泥锌铁分离的影响

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为推进钢铁行业含锌冶金尘泥的资源化利用,对铁含量为30.38％、锌含量为4.79％的含锌冶金尘泥进行微波还原焙烧-磁选分离试验研究.结果表明:含锌冶金尘泥未焙烧直接磁选以及常规马弗炉还原焙烧-磁选的方式均难以较好实现含锌冶金尘泥中锌铁的有效分离;在微波马弗炉700 ℃、15 min时,焙烧产物中主要存在的物相为单质Fe,焙烧产物在磁场强度为150 mT时,含锌冶金尘泥中锌铁能够达到较好的分离,所得磁选的精矿指标:锌含量为2.73％、铁含量为57.84％、铁回收率为88.67％,磁选的尾矿指标:铁含量为9.54％、锌含量为9.85％、锌回收率为61.72％.
Effect of Microwave Roasting on Zinc-Iron Separation of Zinc-Containing Metallurgical Dust and Sludge in Iron and Steel Industry
To promote the resource utilization of zinc-containing metallurgical dust and sludge in iron and steel industry,the zinc-containing metallurgical dust and sludge with iron content of 30.38％and zinc content of 4.79％was studied by microwave reduction roasting-magnetic separation test.The experimental results show that it is difficult to realize the effective separation of zinc and iron in zinc-containing metallurgical dust and sludge by direct magnetic separation without roasting and conventional muffle furnace reduction roasting-magnetic separation.When the micro wave muffle furnace roasting at 700 ℃ for 15 min.The main phase in the roasted product is Fe.When the magnetic field intensity of the roasted product is 150 mT,the zinc and iron in the zinc-containing metallurgical dust can achieve better separation.The concentrate index obtained by magnetic separation:the zinc content is 2.73％,the iron content is 57.84％,the iron recovery rate is 88.67％,tailings index of magnetic separation:the iron content is 9.54％,the zinc content is 9.85％,the zinc recovery rate is 61.72％.

microwave roastingzinc-containing metallurgical dust and sludgeresource utilizationmagnetic separationseparation of zinc and iron

施艳鸿、余雨婷、李奇勇、李强、廖靖华、杨思伟、林瑞豪

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三明学院资源与化工学院,福建三明 365004

福建师范大学环境与资源学院,福州 350117

清洁生产技术福建省高校工程研究中心,福建三明 365004

微波焙烧 含锌冶金尘泥 资源化利用 磁选 锌铁分离

中央引导地方科技发展专项福建省科技厅引导性项目福建省科技厅引导性项目福建省大学生创新训练项目闽江源生态保护研究院培育项目

2022L30272020Y00902022Y0075S202111311059MJ2021002

2024

10.3969/j.issn.2095-1744.2024.06.019

有色金属工程
北京矿冶研究总院

有色金属工程

CSTPCD北大核心
影响因子：0.432
ISSN：2095-1744
年,卷(期)：2024.14(6)
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