针对某钼尾矿中钼和二氧化硅含量高及重金属元素含量低的特点,采用浮选预先回收钼-浮钼尾矿焙烧制备硅肥的工艺,对该钼尾矿进行综合利用研究.对含钼0.0093%的尾矿,经一粗五精两扫闭路选别后,获得钼品位为25.36%、回收率65.04%的低品位钼精矿.钼浮选尾矿经干燥后,与白云石按照1:1质量比例混匀,经焙烧冷淬后可获得活性二氧化硅含量为21.45%的硅肥.该方法能有效回收钼尾矿中有价元素,实现尾矿的综合利用.%In view of the high content of molybdenum and silica in a molybdenum tailings and the low content of heavy metal elements,the process of preparing silicon fertilizer by pretreatment of molybdenum-float molybdenum tailings by flotation was used to investigate the comprehensive utilization of the molybdenum tailings.The low-grade molybdenum concentrate with a grade of 25.36% and a recovery of 65.04% was obtained from molybdenum tailings with 0.0093% Mo,after one rough selection,five fine selection and two scavenger.Dry molybdenum flotation tailings matched with dolomite according the mass ratio of 1(molybdenum tailings):1(dolomite),were calcined into a silicon fertilizer with active silica of 21.45%.The experiment shows that the method can effectively recover the valuable elements in the molybdenum tailings and realize the comprehensive utilization of the tailings.
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