利用某钼尾矿回收钼及制备硅肥的研究

Recovery of molybdenum and preparation of silicon fertilizer by using molybdenum tailings

摘要:

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.

Abstract:

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.