我矿铀地质品位偏低,采冶成本较高。在竞争中要求得生存,必须注意重技术改造,低品位矿石堆浸就是这种技术措施之一。在一系列堆浸试验的基础上,进行了低品位矿石的地表堆浸工业试验。堆场面积约700m~2,场地坡度2—5％,底部隔水层采用软塑料板(或者粘土加塑料薄膜),堆矿高度3—5m,一次堆矿重4484t,矿石平均品位0.0446％,粒度为-120mm。借助位差将1—5％硫酸溶液送到矿石堆,自上而下通过床层来浸出铀金属, I mine uranium geological grade is low, mining and metallurgy costs are higher. Requiring survival in the competition, we must pay attention to technological transformation, low grade ore heap leaching is one of such technical measures. Based on a series of heap leaching tests, an industrial test of heap leaching of low-grade ore was conducted. The yard area is about 700m ~ 2, the slope of the site is 2-5%. The bottom of the aquitard is made of soft plastic plate (or clay plus plastic film), the heap height is 3-5m, the heap weight is 4484t and the average ore grade is 0.0446% The particle size is -120mm. 1-5% sulfuric acid solution is sent to the ore pile by means of the position difference, the uranium metal is leached through the bed from top to bottom,