期刊论文

Ding, D.-X.(dingdxzzz@163.com)

中文

中国有色金属学报

1004-0609

2013

23

10

2921-2927

10.19476/j.ysxb.1004.0609.2013.10.025

国家自然科学基金资助项目（10975071）；

本校为第一且通讯机构

为了研究堆浸铀矿石粒径分布对堆浸效果的影响，配置5组不同粒径分布分维数的铀矿样进行室内柱浸试验，测定不同时刻浸出液的铀浓度和pH值，计算对应时刻的浸出率和酸耗。结果表明：分维数越大的铀矿样，浸出液中铀离子浓度峰值出现得越迟、峰值越小，且在峰值出现后，铀离子浓度越大；在浸出初期，分维数越大的铀矿样，浸出率越低，这种差距在浓度峰值出现之前逐渐增大，峰值过后逐渐减小；而在浸出后期，分维数大的铀矿样的浸出率依次逐渐超过分维数较小的铀矿样的浸出率，并保持进一步扩大的趋势；在浸出初期，若要获得相同的浸出率，分维数越大的铀矿样，其酸耗量也越大，酸耗量的差距随着浸...

Uranium ore heap for heap leaching is a kind of loose media which is heaped by broken uranium ore with different sizes. In order to study the influence of the uranium ore particle size distribution on the heap leaching, five groups of uranium ore samples with different fractal dimensions of particle size distribution were prepared for indoor column leaching tests. The uranium concentration and pH of the pregnant solution at different times were determined, and the corresponding uranium recovery and the acid consumption were calculated. The results show that the larger the fractal dimension of ...