论文部分内容阅读
在阿扎尼亚的铀矿工业中有三种类型的铀样品:铀含量低的粒状矿样,铀含量低的液流和料浆流,铀含量高的液流和料浆流(最终产品)。发展了分析这些样品的核技术。用铀方钍石矿物的天然放射性来控制杰姆斯摇床分选重质矿物的分选点。研制了一种γ吸收计来分析最终产品液流(含有15—40%U_3O_8的重铀酸铵)。在数周内,流线分析器的分析结果与化学分析比较,平均相对误差为0.45%。探矿矿样和矿石样品通常是含0-1000ppmU_3O_8的粒状干样品。发展了一种用 Ge(Li)探测器和100毫居里 Co~(57)源的放射性同位素 X 射线荧光分析器。该分析器探测的下限是11ppm 铀,每天能分析250个样品。这种分析器如装上一个液流室也能用来分析含有同样铀浓度范围的液流。
There are three types of uranium samples in Azania’s uranium industry: granular ore samples with low uranium content, liquid and slurry streams with low uranium contents, liquid streams with high uranium contents and slurry streams (end products) . Nuclear techniques to analyze these samples have been developed. The Natural Radioactivity of Uranium - Containing Thorium Minerals to Control the Sorting Point of the Zims Shaker Separation of Heavy Minerals. A gamma absorbometer was developed to analyze the final product flow (ammonium diuranate containing 15-40% U_3O_8). In a few weeks, the results of the streamline analyzer were compared with those of the chemical analysis, with an average relative error of 0.45%. The prospecting ore and ore samples are usually dry pellets containing 0-1000ppmU_3O_8. A radioisotope X-ray fluorescence analyzer using Ge (Li) detector and 100 millicuries Co ~ (57) source has been developed. The analyzer detects a lower limit of 11 ppm uranium and can analyze 250 samples per day. This analyzer, if equipped with a flow cell, can also be used to analyze flows containing the same uranium concentration range.