| 用二氧化碳减缓碱法地浸采铀中的化学沉淀堵塞 |
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| 引用本文： | 田新军,沈红伟,陈雪莲,邢拥国,黄海涛,胡新华,何斌.用二氧化碳减缓碱法地浸采铀中的化学沉淀堵塞[J].铀矿冶,2006,25(1):15-20. |
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| 作者姓名： | 田新军 沈红伟 陈雪莲 邢拥国 黄海涛 胡新华 何斌 |
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| 作者单位： | 中国核工业集团公司伊宁铀矿,新疆,伊宁,835000 |
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| 摘 要： | 通过分析地下水系统的Eh值及pH值对难溶物质溶解度和饱和指数的影响,得出溶浸剂pH值的变化是造成伊宁铀矿某矿床碱法地浸条件试验中出现化学沉淀堵塞的主要原因,提出了用CO2调节溶浸剂pH值来减少或避免化学沉淀堵塞的技术措施。试验结果表明,该措施可在一定程度上缓解化学沉淀堵塞,从而提高了浸出液中的铀浓度,并使钻孔的抽注能力有所恢复。
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| 关 键 词： | 碱法地浸 化学堵塞 饱和指数 二氧化碳 |
| 文章编号： | 1000-8063（2006）01-0015-06 |
| 收稿时间： | 2005-02-11 |
| 修稿时间： | 2005年2月11日 |
Using CO2 for reducing chemical precipitation jamming in alkaline in-situ leaching of uranium |
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| TIAN Xin-jun,SHEN Hong-wei,CHEN Xue-lian,XING Yong-guo,HUANG Hai-tao,HU Xin-hua,HE Bin.Using CO2 for reducing chemical precipitation jamming in alkaline in-situ leaching of uranium[J].Uranium Mining and Metallurgy,2006,25(1):15-20. |
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| Authors: | TIAN Xin-jun SHEN Hong-wei CHEN Xue-lian XING Yong-guo HUANG Hai-tao HU Xin-hua HE Bin |
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| Affiliation: | Yining uranium mine, CNNC, Yining 835000, China |
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| Abstract: | In order to reduce chemical precipitation jamming in alkaline in-situ leaching of uranium at a deposit of Yining Uranium Mine,the effects of Eh and pH values in groundwater system on solubility and saturation index of insoluble substance are studied.The results indicate that the change of pH in lixiviant is the major factor causing the jamming.A technical measure is put forward,that is,using CO_2 to control pH in lixiviant.The test results show that this jamming is reduced to a certain extent,uranium concentration in lixivium is enhanced,and the pumping-injecting ability of borehole is improved. |
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| Keywords: | alkaline in-situ leaching of uranium chemical jamming saturation index carbon dioxide |
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