某铀矿石雾化布液堆浸性能的研究

Research on the Heap Leaching Performance of an Uranium Ore by Spray Sprinkling Solution Distribution Technology

用某铀矿石作模拟矿堆,采用雾化布液新工艺进行了小型室内柱浸试验。结果表明,其液计浸出率为70.67%,综合渣铀品位为0.0183%,综合渣计浸出率达67.48%,酸耗22.94kg/t,液固质量比为1.2∶1,而且无矿堆板结现象,布液均匀性好,酸耗在正常范围之内,浸出周期短,液固比小。并推荐了雾化布液堆浸铀矿石的工艺参数,为该矿的工业试验提供了参考依据。

Using a simulated stock pile, the laboratory-scale column leaching tests were carried out by the new technology of spray sprinkling solution distribution. The test results indicated that the leaching rate is 70.67% （ by liquid）, uranium grade of the composite sludge is 0.0183 %, and the leaching rate is 67.48 % （ by composite sludge）. The acid consumption is 22.94kg/t,the weight ratio of liquid and solid is 1.2：1 ,and also the ore heaps have not hardened and impervious. This new technology has advantages of solution distribution uniformity, rational level of acid consumption,shorter leaching cycle and relative small weight ratio of liquid and solid. The technological parameters recommeded by author could offer a reference for commercial-scale trail of the uranium ore.