气-液反应法制备AUC的研究  

STUDY ON PREPARATION OF AUC BY GAS-LIQUID REACTION METHOD

作　　者：黄伦光[1] 庄海兴[1] 牛玉清[1] 赵凤歧[1] 

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2003年第1期15-23,共9页Uranium Mining and Metallurgy

摘　　要：较详细地介绍了用NH3和CO2气体作沉淀剂,从UO2(NO3)2溶液中制备[(NH4)4UO2(CO3)3](AUC)的工艺研究。通过小型、台架和扩大试验,研究了温度、料液浓度、n(NH3)/n(U)和NO3-浓度等因素对AUC结晶过程的影响,特别是沉淀设备对松装密度和振实密度等物理性能的影响。试验表明,在特制的反应槽中可以利用两气有效分散,从硝酸铀酰溶液中制备性能良好的AUC晶体。扩大试验制得的AUC晶体,其松装密度>1.1g/cm3,振实密度>1.3g/cm3;具有很好的流动性。This papere described the (NH4)UO2(CO3)3 (AUC) production process from UO2(NO3)2 solution in detail.Through laboratory experiment and pilot experiment,studied the effects of tedmperature,concentration of feed solution,mole ratio of NH3 to U etc.on the AUC crystallization process.the effects of precipitation device on the physical performance was studied in especialy.The experiments indicated that the gases could be dispersed effectively in special device and good performance AUC crystal could be obtained from UO2(NO3)2 solution.

关 键 词：气-液反应法 AUC 铀 氨气 二氧化碳气体 温度 核工业 

分 类 号：TL213[核科学技术—核燃料循环与材料]