哈萨克斯坦某铀矿床地浸采铀现场试验研究
投稿时间:2022-01-21  修订日期:2022-10-03  点此下载全文
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作者单位邮编
李建东 中广核铀业发展有限公司 100029
张峰 中广核铀业发展有限公司 100029
原渊 核工业北京化工冶金研究院 
窦金龙 浙江华友钴业股份有限公司 
中文摘要:为了工业开发扎尔巴克砂岩型铀矿床,得到主要开采参数,开展低酸浸出现场试验。根据浸出试验的结果,获得浸出周期及酸耗等影响成本的关键参数。现场试验采用行列式井型、采用膨润土止水的祼孔施工工艺、超前酸化模式、氟化氢铵洗孔等近几年地浸矿山新工艺,在矿体平均厚度、品位均不占优势的情况下,试验得到了如下结果:该矿床适宜于采用酸法地浸采铀工艺,浸出液集合样平均铀浓度为87.7mg/L,峰值铀浓度可达150.0mg/L,平均单孔抽液量为3.5m3/h,平均单孔注液量为1.3m3/h。本次试验取得了良好的浸出效果和经济效益,为矿床后续的工业开发提供可靠依据。
中文关键词:地浸采铀,现场试验,砂岩型铀矿床,酸化, 工业开发。
 
The field test research on in-situ leaching of uranium in Kazakhstan
Abstract:A weak acid field leaching test has been carried out in order to research main technical parameters for industrial development in Kazakhstan. According to the results of filed test, some important parameters have been obtained which affect production cost, such as leaching period and sulfuric acid specific consumption, and so on. The field test adopts the determinant well type, the borehole construction technology with bentonite rings, the advanced acidification method, ammonium bifluoride washing holes and other new in-situ leaching mine technologies in recent years. Under the condition that the average thickness and grade of the ore body are not dominant, the test results are as follows:the weak acid leaching process is feasible for this sandstone type uranium deposit, and during the field test, the average uranium concentration of leaching solution is 87.7 mg/L and the peak uranium concentration can reach 150 mg/L, at the same time, the average volume of production well is 3.5 m3/h and the average volume of injection well is 1.3 m3/h. The field test has gain good leaching effect and economic benefits and the technical parameters will provide a reliable basis for the subsequent industrial development of the deposit.
keywords:in-situ leaching of uranium, field test, sandstone type uranium deposit, acidification  
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