公开(公告)号：US4769180A

公开(公告)日：1988-09-06

申请号：US32588

申请日：1987-04-01

申请人： Yoshiaki Echigo ,  Hirotaka Amimoto ,  Mutsunori Yamao ,  Tadashi Ishikura ,  Keiichiro Otomura ,  Sakae Fujisaki ,  Yoshikazu Ogura

发明人： Yoshiaki Echigo ,  Hirotaka Amimoto ,  Mutsunori Yamao ,  Tadashi Ishikura ,  Keiichiro Otomura ,  Sakae Fujisaki ,  Yoshikazu Ogura

IPC分类号： C01B7/19 ,  C01G43/00 ,  C01G43/06 ,  C22B60/02

CPC分类号： C22B60/0265 ,  C01B7/191 ,  C01G43/00 ,  C01G43/063 ,  C22B60/0278 ,  Y02P10/212

摘要： A process for separately recovering uranium and hydrofluoric acid from a waste liquor containing uranium and fluorine comprises a neutralizing precipitation step wherein a magnesium compound is added to the waste liquor containing uranium and fluorine to form a precipitate and the thus formed precipitate is then separated; a distillation step wherein an aqueous solution of sulfuric acid is added to the precipitate separated in said neutralizing precipitation step to dissolve the precipitate and the thus formed solution is then distilled to recover hydrofluoric acid as a distillate; and a uranium recovery step wherein uranium is recovered from a residue produced by said distillation step.

摘要翻译： 从含有铀和氟的废液中分别回收铀和氢氟酸的方法包括中和沉淀步骤，其中将镁化合物加入到含有铀和氟的废液中以形成沉淀物，然后分离形成的沉淀物; 蒸馏步骤，其中将硫酸水溶液加入到在所述中和沉淀步骤中分离的沉淀物中以溶解沉淀物，然后蒸馏形成的溶液以回收作为馏出物的氢氟酸; 和铀回收步骤，其中从由所述蒸馏步骤产生的残余物中回收铀。