| 李逢源,王朔,杨路桥,李俊哲,曾晟.堆浸过程中饱和液面的高度对铀浸出的影响[J].南华大学学报(自然科学版),2024,(5):25~29, 77.[LI Fengyuan,WANG Shuo,YANG Luqiao,LI Junzhe,ZENG Sheng.Effect of the Height of the Saturated Liquid Level on Uranium Leaching During Heap Leaching[J].Journal of University of South China(Science and Technology),2024,(5):25~29, 77.] |
| 堆浸过程中饱和液面的高度对铀浸出的影响 |
| Effect of the Height of the Saturated Liquid Level on Uranium Leaching During Heap Leaching |
| 投稿时间：2024-03-22 |
| DOI： |
| 中文关键词: 堆浸浸出 铀矿粒径 浸润线高度 浸出率 |
| 英文关键词:heap leaching particle size of uranium ore height of infiltration line leaching rate |
| 基金项目:国家级大学生创新创业训练计划项目(202210555055);湖南省省级大学生创新创业训练计划项目(S202310555010) |
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| 中文摘要: |
| 地表堆浸提铀中溶浸液的饱和程度与铀浸出周期和浸出率密切相关,为了研究堆体中饱和液面高度对铀浸出率的影响,配置2组不同分维值的铀矿样开展饱和液面高度对浸出效果影响的室内实验研究,通过调控喷淋速度和浸出液流速产生5个不同饱和液面高度,测定不同时间段铀质量浓度并计算浸出率。结果表明:1)铀质量浓度在浸出前期较低,当反应继续进行时出现明显增大的趋势,到达峰值后增长趋势不再明显,随后逐渐稳定并开始降低;2)粒径分维值较大的矿样中含有更多的小颗粒矿石,其比表面积随之增大,反应更充分,浸出率更大;3)浸出率随着浸润线高度的上升而上升并随时间呈现非线性变化,在浸润线高度为100 mm时浸出效果最好,但在实际生产中,须根据矿堆尺寸合理调控溶浸液的饱和液面高度。 |
| 英文摘要: |
| The saturation degree of the leaching solution in the surface heap leaching uranium is closely related to the uranium leaching cycle and leaching rate. In order to study the effect of saturated liquid level height on uranium leaching rate in the reactor, two groups of uranium ore samples with different fractal dimensions were configured to carry out laboratory experimental studies on the effect of saturated liquid level height on leaching effect. By adjusting the spray rate and leachate flow rate, five different saturated liquid level heights were generated, and the uranium concentration in different time periods was measured and the leaching rate was calculated. The results show that:1) the uranium concentration is lower in the early stage of leaching, when the reaction continues, it increases obviously, and when it reaches the peak, the growth trend is no longer obvious, and then gradually stabilizes and begins to decrease; 2) the ore sample with larger particle size fractal dimension value contains more small particles of ore, and its specific surface area increases, the reaction is more sufficient, and the leaching rate is larger; 3) The leaching rate increases with the increase of the height of the infiltration line and shows a nonlinear change with time, and the leaching effect is best when the height of the infiltration line is 100mm, but in actual production, the saturated liquid level height of the leaching solution must be reasonably adjusted according to the size of the ore pile. |
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