| 察尔汗盐湖低品位固体钾矿液化开采的现场试验研究探讨 |
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| 引用本文：王文祥,李文鹏,刘振英,郝爱兵,王石军,焦鹏程.2010.A tentative discussion on in_situ experimental liquefaction and exploitation of low grade solid potassium resources in Qarhan salt lake[J].Mineral Deposits,29(4):697~703 |
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| 基金项目:本文得到国家863课题“青海别勒滩低品位固体钾矿液化开发的关键技术”资助 |
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| 中文摘要:青海察尔汗干盐湖赋存有大量的低品位固体钾盐，最佳的开采方法应是使用低钾的溶剂去溶解盐层中的固体钾盐，使固相钾转化为液相钾，然后将富钾卤水抽取到盐田。作者在察尔汗盐湖别勒滩区段1 km2的研究区上，通过100天的溶解驱动野外试验，获得大量的水动力和水化学数据，在此基础上，分析研究注入的卤水溶剂在溶解驱动过程中，水动力场和水化学场的变化，并应用Pitzer理论计算了代表性样品中含钾矿物的活度积，以评价溶矿效果。研究表明，涩聂湖湖水作为溶解驱动的溶剂，溶解钾矿物效果明显，值得进一步开展工程化研究。 |
| 中文关键词:地质学 溶解驱动 液化开采 Pitzer理论 察尔汗 |
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| A tentative discussion on in_situ experimental liquefaction and exploitation of low grade solid potassium resources in Qarhan salt lake |
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| Abstract:The Qarhan Salt Lake contains large amounts of low grade potassium resources. The exploitation of potassium from the solid ore is not economical. The most suitable method for exploiting the low grade solid potassium is to find a reasonable solvent and dissolve the solid potassium in the salt bed. The solvent can make the solid potassium converted into liquid potassium. The authors obtained a lot of hydrodynamic and hydrochemical data after 100 days' experimentation. The experiment was carried out in an area of 1 km2 in the Qarhan salt lake. Based on analyzing the variation of the hydrodynamic field and hydrochemcal field in the process of dissolving-driving experiment and calculating activity products of some samples with Pitzer theory, this paper estimated the effect of the solvent. It is shown that the solvent is very effective in the aspect of dissolving potassium. Nevertheless, the problem still exists that high concentration of sodium causes low penetrability of the media. |
| keywords:geology,dissolving_driving, liquefaction and exploitation, Pitzer theory, Qarhan |
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