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本文给出了在P_(507)-HNO_3体系中去除氧化镧中放射性的工艺流程及用混合澄清槽作为萃取设备,在上海跃龙化工厂完成的扩大试验结果。试验表明:α放射性、铁和钙的去污系数都大于1000,镧的回收率大于96%,产品中α放射性小于1计数/h,Fe_2O_3<5ppm,CaO<50ppm,达到了荧光级氧化镧的要求。该流程操作简便、设备简单、稳定性好,可以应用于工业生产。 相似文献
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The optimum conditions for extraction chromatography using 2ethyl-hexyl 2-ethylhexylphosphonate resin to separate thulium, yetterbium and luticium were studied. According to the proposed procedure, several grams of yetterbium oxide (purity = 99.95%) and luticium oxide (purity = 99.90%) were separated from the mixed heavy rare earth oxides on laboratory scale. Their relatively high recoveries (99% and 95% for Yb2O3 and Lu2O3 respectively) may be satisfactory. 相似文献
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介绍了奥地利P@P公司设计的两转两冷湿法制酸工艺在黏胶行业的应用,分析了湿法制酸在黏胶行业的经济效益,以及当前系统存在的问题,如静电除雾器和接力风机腐蚀严重、熔盐翅片换热器堵塞、冷凝器集酸槽泄漏等问题。 相似文献
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