Zinc leaching residue (ZLR) contains high content of valuable metals such as zinc and iron. However, zinc and iron mainly exist in the form of zinc ferrite, which are difficult to separate and recover. This study proposed a new process involving sulfidation roasting, magnetic separation and flotation to recover zinc and iron in ZLR. Through sulfidation roasting of ZLR with pyrite, zinc and iron were converted into ZnS and Fe₃O₄. The effects of pyrite dosage, roasting temperature and roasting time on the sulfidation of zinc in ZLR were investigated. The results showed that the sulfidation percentage of zinc reached 91.8% under the optimum condition. Besides, it was found that ball-milling was favorable for the separation and recovery of zinc and iron in sulfidation products. After ball-milling pretreatment, iron and zinc were enriched from sulfidation products by magnetic separation and flotation. The grade of iron in magnetic concentrates was 52.3% and the grade of zinc in flotation concentrates was 31.7%, which realized the recovery of resources.

锌浸出残渣（ZLR）包含高含量的有价值的金属，例如锌和铁。但是，锌和铁主要以铁素体锌的形式存在，难以分离和回收。这项研究提出了一种新的工艺，该工艺涉及硫化焙烧，磁选和浮选以回收ZLR中的锌和铁。通过黄铁矿对ZLR进行硫化焙烧，锌和铁转化为ZnS和Fe ₃ O _4。。研究了黄铁矿用量，焙烧温度和焙烧时间对ZLR中锌的硫化的影响。结果表明，在最佳条件下，锌的硫化率达到91.8％。此外，发现球磨有利于硫化产物中锌和铁的分离和回收。球磨预处理后，通过磁选和浮选从硫化产物中富集铁和锌。磁性精矿中铁的含量为52.3％，浮选精矿中的锌的含量为31.7％，实现了资源的回收。