用重选—磁选—反浮选法回收鞍山某尾矿中的铁

为了回收鞍山某浮选尾矿中的铁，进行了详细的工艺矿物学研究和回收工艺研究。结果表明，齐大山铁矿选矿分厂浮选尾矿的品位为19.51%；其中的铁矿物以赤（褐）铁矿和磁铁矿为主，脉石矿物以石英矿为主。最终确定采用螺旋溜槽重选—磁选—反浮选流程，获得的分选技术指标为:最终精矿铁品位为63.50%、产率为15.99%、铁回收率为52.07%。试验研究结果为后期该尾矿资源回收铁提供了技术支撑。 

Recovery of Iron from a Tailing in Anshan by Gravity Concentration-Magnetic Separation-Reverse Flotation

In order to recovery iron minerals from a flotation tailings in Anshan process mineralogy of flotation tailings was studied which includes chemical multielement analysis, X-ray diffraction analysis and size analysis in Anshan concentration plant. The results indicate that the grade of Fe in tailings of flotation was 19.51%; The iron minerals in the tailings are mainly hematite(or limonite) and magnetite; The gangue minerals is amounts of quartz; The hazardous Substances(S or P)are no many in the tailings. The appropriate process flowsheet(spiral, magnetic separation and reverse floatation methods) had been carried out for recover the iron minerals contained in the iron ore floatation tailing of Anshan concentration plant according to scientific test's investigation, and following results had been achieved: Fe grade, yield and recovery of the ultimate concentrate were 63.50%, 15.99% and 52.07% respectively. The experimental results provided technical support for iron recovery from an iron tailings resource in Anshan.