【摘要】 为实现含锌冶金尘泥节能、环保、低碳的资源化利用，对原料进行水分、粒度、化学成分、物相组成、SEM-EDS等物理化学特性分析。结果表明：含锌冶金尘泥的水分为3.43%、水分容易脱除，颗粒大小不一、细小颗粒会聚集成团和黏附于大颗粒表面，具有回收利用价值的成分主要为锌和铁，含量分别为5.06%和29.24%,其中锌主要以ZnFe₂O₄的形式存在于细小颗粒中、铁主要以Fe₂O₃的形式存在。含锌冶金尘泥的锌铁分离试验研究表明：直接磁选和常规焙烧—磁选的锌铁分离效果均不理想，微波焙烧—磁选可以达到较好的锌铁富集分离效果；在微波焙烧温度700℃、焙烧时间10 min的条件下，磁选精矿产率为61.67%、铁含量为54.39%、锌含量为2.62%,磁选尾矿锌含量为12.15%、铁含量为9.74%,磁选精矿和磁选尾矿均能实现较好的资源化回收利用。更多还原

【Abstract】 In order to realize energy saving, environmental protection and low carbon resource utilization of zinc containing metallurgical dust, the physicochemical properties of raw materials such as moisture, particle size, chemical composition, phase composition and SEM-EDS were analyzed.The results show that water content of zinc containing metallurgical dust is 3.43%,which is easy to be removed.The particles size is different, and the fine particles will aggregate into clusters and adhere to the surface of large particles.The main components with recycling value are zinc and iron, the contents of which are 5.06% and 29.24%,respectively.Zinc mainly exists in the form of ZnFe₂O₄ in fine particles and iron mainly exists in the form of Fe₂O₃.The experimental study on zinc-iron separation of zinc containing metallurgical dust shows that both direct magnetic separation and conventional roasting-magnetic separation have unsatisfactory Zn-Fe separation effects, while microwave roasting-magnetic separation can achieve better zinc-iron enrichment and separation effect.Under the conditions of microwave roasting temperature of 700 ℃ and roasting time of 10 min, the yield, iron content and zinc content of magnetic concentrates is 61.67%,54.39% and 2.62% respectively, the content of zinc and iron in magnetic tailings is 12.15% and 9.74% respectively.Both concentrate and tailings of magnetic separation can achieve better recovery and utilization of resources.更多还原