【摘要】 矿堆的低渗透性能是局限矿石浸出周期及金属浸出率的最主要因素之一 ,因此 ,长期以来 ,高含泥量的铀矿石一直是酸法堆浸提铀技术的应用禁区。核工业铀矿开采研究所经过多年的研究 ,研制开发了酸法制粒粘和剂及相应的制粒、养护等工艺 ,并对多种含泥矿石进行了制粒堆浸试验 ,研究成果已经成功应用于某含泥铀矿提铀工业生产中。通过采用制粒技术进行酸法堆浸 ,可有效地改善矿堆的渗透性能、提高浸出效率 ,矿石的浸出周期可从直接堆浸的 2 0 0d以上降低至 6 0d以内 ,金属的浸出率可从 4 0 %以下提高到 96 %以上。更多还原

【Abstract】 The permeability of ore mass has a great influence on the leaching period of heap leaching and the leaching efficiency,hence the uranium ores with high content of clay is difficult to acidic heap leaching.The Research Institute of Uranium Mining has engaged several years studies on the cementing agents of acidic agglomeration,agglomeration conditions,as well as the curing measures of agglomerated balls.On the basis of these studies,several types of claybearing ores have been tested with good results.The technique of agglomerated acidic heap leaching has been successfully applied in a uranium mine.Since agglomeration has effectively increased the permeability of ore heap,its leaching period is decreased from 200 days to 60 days,the leaching efficiency is increased to 96% from less than 40% comparing with direct heap leaching program.更多还原