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金川鎳棄渣鐵資源回收綜合利用

Comprehensive utilization of iron recovery from Jinchuan nickel residue

  • 摘要: 針對金川鎳棄渣的特點,采用深度還原-磁選工藝,對其進行鐵資源回收的綜合利用實驗研究,獲得了鐵品位為89.84%,鐵回收率達93.21%的鐵精礦.探討了還原溫度、還原時間、二元堿度、磨礦細度和磁場強度等不同實驗條件對產品指標和分離效果的影響.通過X射線衍射分析、光學顯微分析、SEM分析、化學分析等手段確定了鎳棄渣與鐵精礦的物相組成和特點.

     

    Abstract: Based on the characteristics of Jinchuan nickel residue, a comprehensive utilization experimental study on iron recovery was done by the deep reduction-magnetic separation method to get iron concentrate whose grade of iron is 89.84% and recovery rate of iron is 93.21%. The effects of some experimental conditions such as reduction temperature, reduction time, binary basicity, grinding fineness and magnetic field intensity on the separation efficiency and product indexes were researched. The phase compositions and characteristics of nickel residue and iron concentrate were determined by X-ray diffraction, optical microscopy, SEM and chemical analysis.

     

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